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Merge pull request #17 from Artikash/hookrewrite

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Rewrite hook logic
This commit is contained in:
Akash Mozumdar 2018-08-25 15:47:10 -04:00 committed by GitHub
commit cb55ef9a86
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GPG Key ID: 4AEE18F83AFDEB23
28 changed files with 3262 additions and 623 deletions
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1
CMakeLists.txt
View File

@ -33,5 +33,6 @@ set(CMAKE_CONFIGURATION_TYPES Debug Release)
add_subdirectory(host)
add_subdirectory(GUI)
add_subdirectory(minhook)
add_subdirectory(vnrhook)
add_subdirectory(extensions)

1
README.md
View File

@ -56,6 +56,7 @@ GPL v3
- ITH updating by [Andys](https://github.com/AndyScull)
- ITHVNR new GUI & VNR engine migration by [Stomp](http://www.hongfire.com/forum/member/325894-stomp)
- ITHVNR updating by [mireado](https://github.com/mireado) and [Eguni](https://github.com/Eguni)
- MinHook library made by [TsudaKageyu](https://github.com/TsudaKageyu)
- NextHooker creation/updating by [Me](https://github.com/Artikash) and [DoumanAsh](https://github.com/DoumanAsh)
## Special Thanks

11
host/host.cc
View File

@ -8,6 +8,9 @@
#include "../vnrhook/hijack/texthook.h"
#include <atlbase.h> // A2W
bool operator==(const ThreadParam& one, const ThreadParam& two) { return one.pid == two.pid && one.hook == two.hook && one.retn == two.retn && one.spl == two.spl; }
namespace
{
struct ProcessRecord
@ -228,7 +231,7 @@ namespace Host
WaitForSingleObject(pr.sectionMutex, 0);
const TextHook* hooks = (const TextHook*)pr.sectionMap;
for (int i = 0; i < MAX_HOOK; ++i)
if (hooks[i].Address() == addr)
if (hooks[i].hp.address == addr)
ret = hooks[i].hp;
ReleaseMutex(pr.sectionMutex);
return ret;
@ -246,10 +249,10 @@ namespace Host
WaitForSingleObject(pr.sectionMutex, 0);
const TextHook* hooks = (const TextHook*)pr.sectionMap;
for (int i = 0; i < MAX_HOOK; ++i)
if (hooks[i].Address() == addr)
if (hooks[i].hp.address == addr)
{
buffer.resize(hooks[i].NameLength());
ReadProcessMemory(pr.processHandle, hooks[i].Name(), &buffer[0], hooks[i].NameLength(), nullptr);
buffer.resize(hooks[i].name_length);
ReadProcessMemory(pr.processHandle, hooks[i].hook_name, &buffer[0], hooks[i].name_length, nullptr);
}
ReleaseMutex(pr.sectionMutex);
USES_CONVERSION;

186
include/MinHook.h Normal file
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@ -0,0 +1,186 @@
/*
* MinHook - The Minimalistic API Hooking Library for x64/x86
* Copyright (C) 2009-2017 Tsuda Kageyu.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#if !(defined _M_IX86) && !(defined _M_X64) && !(defined __i386__) && !(defined __x86_64__)
#error MinHook supports only x86 and x64 systems.
#endif
#include <windows.h>
// MinHook Error Codes.
typedef enum MH_STATUS
{
// Unknown error. Should not be returned.
MH_UNKNOWN = -1,
// Successful.
MH_OK = 0,
// MinHook is already initialized.
MH_ERROR_ALREADY_INITIALIZED,
// MinHook is not initialized yet, or already uninitialized.
MH_ERROR_NOT_INITIALIZED,
// The hook for the specified target function is already created.
MH_ERROR_ALREADY_CREATED,
// The hook for the specified target function is not created yet.
MH_ERROR_NOT_CREATED,
// The hook for the specified target function is already enabled.
MH_ERROR_ENABLED,
// The hook for the specified target function is not enabled yet, or already
// disabled.
MH_ERROR_DISABLED,
// The specified pointer is invalid. It points the address of non-allocated
// and/or non-executable region.
MH_ERROR_NOT_EXECUTABLE,
// The specified target function cannot be hooked.
MH_ERROR_UNSUPPORTED_FUNCTION,
// Failed to allocate memory.
MH_ERROR_MEMORY_ALLOC,
// Failed to change the memory protection.
MH_ERROR_MEMORY_PROTECT,
// The specified module is not loaded.
MH_ERROR_MODULE_NOT_FOUND,
// The specified function is not found.
MH_ERROR_FUNCTION_NOT_FOUND
}
MH_STATUS;
// Can be passed as a parameter to MH_EnableHook, MH_DisableHook,
// MH_QueueEnableHook or MH_QueueDisableHook.
#define MH_ALL_HOOKS NULL
#ifdef __cplusplus
extern "C" {
#endif
// Initialize the MinHook library. You must call this function EXACTLY ONCE
// at the beginning of your program.
MH_STATUS WINAPI MH_Initialize(VOID);
// Uninitialize the MinHook library. You must call this function EXACTLY
// ONCE at the end of your program.
MH_STATUS WINAPI MH_Uninitialize(VOID);
// Creates a Hook for the specified target function, in disabled state.
// Parameters:
// pTarget [in] A pointer to the target function, which will be
// overridden by the detour function.
// pDetour [in] A pointer to the detour function, which will override
// the target function.
// ppOriginal [out] A pointer to the trampoline function, which will be
// used to call the original target function.
// This parameter can be NULL.
MH_STATUS WINAPI MH_CreateHook(LPVOID pTarget, LPVOID pDetour, LPVOID *ppOriginal);
// Creates a Hook for the specified API function, in disabled state.
// Parameters:
// pszModule [in] A pointer to the loaded module name which contains the
// target function.
// pszTarget [in] A pointer to the target function name, which will be
// overridden by the detour function.
// pDetour [in] A pointer to the detour function, which will override
// the target function.
// ppOriginal [out] A pointer to the trampoline function, which will be
// used to call the original target function.
// This parameter can be NULL.
MH_STATUS WINAPI MH_CreateHookApi(
LPCWSTR pszModule, LPCSTR pszProcName, LPVOID pDetour, LPVOID *ppOriginal);
// Creates a Hook for the specified API function, in disabled state.
// Parameters:
// pszModule [in] A pointer to the loaded module name which contains the
// target function.
// pszTarget [in] A pointer to the target function name, which will be
// overridden by the detour function.
// pDetour [in] A pointer to the detour function, which will override
// the target function.
// ppOriginal [out] A pointer to the trampoline function, which will be
// used to call the original target function.
// This parameter can be NULL.
// ppTarget [out] A pointer to the target function, which will be used
// with other functions.
// This parameter can be NULL.
MH_STATUS WINAPI MH_CreateHookApiEx(
LPCWSTR pszModule, LPCSTR pszProcName, LPVOID pDetour, LPVOID *ppOriginal, LPVOID *ppTarget);
// Removes an already created hook.
// Parameters:
// pTarget [in] A pointer to the target function.
MH_STATUS WINAPI MH_RemoveHook(LPVOID pTarget);
// Enables an already created hook.
// Parameters:
// pTarget [in] A pointer to the target function.
// If this parameter is MH_ALL_HOOKS, all created hooks are
// enabled in one go.
MH_STATUS WINAPI MH_EnableHook(LPVOID pTarget);
// Disables an already created hook.
// Parameters:
// pTarget [in] A pointer to the target function.
// If this parameter is MH_ALL_HOOKS, all created hooks are
// disabled in one go.
MH_STATUS WINAPI MH_DisableHook(LPVOID pTarget);
// Queues to enable an already created hook.
// Parameters:
// pTarget [in] A pointer to the target function.
// If this parameter is MH_ALL_HOOKS, all created hooks are
// queued to be enabled.
MH_STATUS WINAPI MH_QueueEnableHook(LPVOID pTarget);
// Queues to disable an already created hook.
// Parameters:
// pTarget [in] A pointer to the target function.
// If this parameter is MH_ALL_HOOKS, all created hooks are
// queued to be disabled.
MH_STATUS WINAPI MH_QueueDisableHook(LPVOID pTarget);
// Applies all queued changes in one go.
MH_STATUS WINAPI MH_ApplyQueued(VOID);
// Translates the MH_STATUS to its name as a string.
const char * WINAPI MH_StatusToString(MH_STATUS status);
#ifdef __cplusplus
}
#endif

2
include/types.h
View File

@ -25,8 +25,6 @@ struct HookParam
filter_fun_t filter_fun;
hook_fun_t hook_fun;
BYTE hook_len, // ?
recover_len; // ?
HANDLE readerHandle; // Artikash 8/4/2018: handle for reader thread
};

17
minhook/CMakeLists.txt Normal file
View File

@ -0,0 +1,17 @@
if("${CMAKE_SIZEOF_VOID_P}" STREQUAL "8")
set(minhook_src
buffer.c
hook.c
trampoline.c
hde/hde64.c
)
else()
set(minhook_src
buffer.c
hook.c
trampoline.c
hde/hde32.c
)
endif()
add_library(minhook ${minhook_src})

312
minhook/buffer.c Normal file
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@ -0,0 +1,312 @@
/*
* MinHook - The Minimalistic API Hooking Library for x64/x86
* Copyright (C) 2009-2017 Tsuda Kageyu.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <windows.h>
#include "buffer.h"
// Size of each memory block. (= page size of VirtualAlloc)
#define MEMORY_BLOCK_SIZE 0x1000
// Max range for seeking a memory block. (= 1024MB)
#define MAX_MEMORY_RANGE 0x40000000
// Memory protection flags to check the executable address.
#define PAGE_EXECUTE_FLAGS \
(PAGE_EXECUTE | PAGE_EXECUTE_READ | PAGE_EXECUTE_READWRITE | PAGE_EXECUTE_WRITECOPY)
// Memory slot.
typedef struct _MEMORY_SLOT
{
union
{
struct _MEMORY_SLOT *pNext;
UINT8 buffer[MEMORY_SLOT_SIZE];
};
} MEMORY_SLOT, *PMEMORY_SLOT;
// Memory block info. Placed at the head of each block.
typedef struct _MEMORY_BLOCK
{
struct _MEMORY_BLOCK *pNext;
PMEMORY_SLOT pFree; // First element of the free slot list.
UINT usedCount;
} MEMORY_BLOCK, *PMEMORY_BLOCK;
//-------------------------------------------------------------------------
// Global Variables:
//-------------------------------------------------------------------------
// First element of the memory block list.
PMEMORY_BLOCK g_pMemoryBlocks;
//-------------------------------------------------------------------------
VOID InitializeBuffer(VOID)
{
// Nothing to do for now.
}
//-------------------------------------------------------------------------
VOID UninitializeBuffer(VOID)
{
PMEMORY_BLOCK pBlock = g_pMemoryBlocks;
g_pMemoryBlocks = NULL;
while (pBlock)
{
PMEMORY_BLOCK pNext = pBlock->pNext;
VirtualFree(pBlock, 0, MEM_RELEASE);
pBlock = pNext;
}
}
//-------------------------------------------------------------------------
#if defined(_M_X64) || defined(__x86_64__)
static LPVOID FindPrevFreeRegion(LPVOID pAddress, LPVOID pMinAddr, DWORD dwAllocationGranularity)
{
ULONG_PTR tryAddr = (ULONG_PTR)pAddress;
// Round down to the allocation granularity.
tryAddr -= tryAddr % dwAllocationGranularity;
// Start from the previous allocation granularity multiply.
tryAddr -= dwAllocationGranularity;
while (tryAddr >= (ULONG_PTR)pMinAddr)
{
MEMORY_BASIC_INFORMATION mbi;
if (VirtualQuery((LPVOID)tryAddr, &mbi, sizeof(mbi)) == 0)
break;
if (mbi.State == MEM_FREE)
return (LPVOID)tryAddr;
if ((ULONG_PTR)mbi.AllocationBase < dwAllocationGranularity)
break;
tryAddr = (ULONG_PTR)mbi.AllocationBase - dwAllocationGranularity;
}
return NULL;
}
#endif
//-------------------------------------------------------------------------
#if defined(_M_X64) || defined(__x86_64__)
static LPVOID FindNextFreeRegion(LPVOID pAddress, LPVOID pMaxAddr, DWORD dwAllocationGranularity)
{
ULONG_PTR tryAddr = (ULONG_PTR)pAddress;
// Round down to the allocation granularity.
tryAddr -= tryAddr % dwAllocationGranularity;
// Start from the next allocation granularity multiply.
tryAddr += dwAllocationGranularity;
while (tryAddr <= (ULONG_PTR)pMaxAddr)
{
MEMORY_BASIC_INFORMATION mbi;
if (VirtualQuery((LPVOID)tryAddr, &mbi, sizeof(mbi)) == 0)
break;
if (mbi.State == MEM_FREE)
return (LPVOID)tryAddr;
tryAddr = (ULONG_PTR)mbi.BaseAddress + mbi.RegionSize;
// Round up to the next allocation granularity.
tryAddr += dwAllocationGranularity - 1;
tryAddr -= tryAddr % dwAllocationGranularity;
}
return NULL;
}
#endif
//-------------------------------------------------------------------------
static PMEMORY_BLOCK GetMemoryBlock(LPVOID pOrigin)
{
PMEMORY_BLOCK pBlock;
#if defined(_M_X64) || defined(__x86_64__)
ULONG_PTR minAddr;
ULONG_PTR maxAddr;
SYSTEM_INFO si;
GetSystemInfo(&si);
minAddr = (ULONG_PTR)si.lpMinimumApplicationAddress;
maxAddr = (ULONG_PTR)si.lpMaximumApplicationAddress;
// pOrigin ± 512MB
if ((ULONG_PTR)pOrigin > MAX_MEMORY_RANGE && minAddr < (ULONG_PTR)pOrigin - MAX_MEMORY_RANGE)
minAddr = (ULONG_PTR)pOrigin - MAX_MEMORY_RANGE;
if (maxAddr > (ULONG_PTR)pOrigin + MAX_MEMORY_RANGE)
maxAddr = (ULONG_PTR)pOrigin + MAX_MEMORY_RANGE;
// Make room for MEMORY_BLOCK_SIZE bytes.
maxAddr -= MEMORY_BLOCK_SIZE - 1;
#endif
// Look the registered blocks for a reachable one.
for (pBlock = g_pMemoryBlocks; pBlock != NULL; pBlock = pBlock->pNext)
{
#if defined(_M_X64) || defined(__x86_64__)
// Ignore the blocks too far.
if ((ULONG_PTR)pBlock < minAddr || (ULONG_PTR)pBlock >= maxAddr)
continue;
#endif
// The block has at least one unused slot.
if (pBlock->pFree != NULL)
return pBlock;
}
#if defined(_M_X64) || defined(__x86_64__)
// Alloc a new block above if not found.
{
LPVOID pAlloc = pOrigin;
while ((ULONG_PTR)pAlloc >= minAddr)
{
pAlloc = FindPrevFreeRegion(pAlloc, (LPVOID)minAddr, si.dwAllocationGranularity);
if (pAlloc == NULL)
break;
pBlock = (PMEMORY_BLOCK)VirtualAlloc(
pAlloc, MEMORY_BLOCK_SIZE, MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE);
if (pBlock != NULL)
break;
}
}
// Alloc a new block below if not found.
if (pBlock == NULL)
{
LPVOID pAlloc = pOrigin;
while ((ULONG_PTR)pAlloc <= maxAddr)
{
pAlloc = FindNextFreeRegion(pAlloc, (LPVOID)maxAddr, si.dwAllocationGranularity);
if (pAlloc == NULL)
break;
pBlock = (PMEMORY_BLOCK)VirtualAlloc(
pAlloc, MEMORY_BLOCK_SIZE, MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE);
if (pBlock != NULL)
break;
}
}
#else
// In x86 mode, a memory block can be placed anywhere.
pBlock = (PMEMORY_BLOCK)VirtualAlloc(
NULL, MEMORY_BLOCK_SIZE, MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE);
#endif
if (pBlock != NULL)
{
// Build a linked list of all the slots.
PMEMORY_SLOT pSlot = (PMEMORY_SLOT)pBlock + 1;
pBlock->pFree = NULL;
pBlock->usedCount = 0;
do
{
pSlot->pNext = pBlock->pFree;
pBlock->pFree = pSlot;
pSlot++;
} while ((ULONG_PTR)pSlot - (ULONG_PTR)pBlock <= MEMORY_BLOCK_SIZE - MEMORY_SLOT_SIZE);
pBlock->pNext = g_pMemoryBlocks;
g_pMemoryBlocks = pBlock;
}
return pBlock;
}
//-------------------------------------------------------------------------
LPVOID AllocateBuffer(LPVOID pOrigin)
{
PMEMORY_SLOT pSlot;
PMEMORY_BLOCK pBlock = GetMemoryBlock(pOrigin);
if (pBlock == NULL)
return NULL;
// Remove an unused slot from the list.
pSlot = pBlock->pFree;
pBlock->pFree = pSlot->pNext;
pBlock->usedCount++;
#ifdef _DEBUG
// Fill the slot with INT3 for debugging.
memset(pSlot, 0xCC, sizeof(MEMORY_SLOT));
#endif
return pSlot;
}
//-------------------------------------------------------------------------
VOID FreeBuffer(LPVOID pBuffer)
{
PMEMORY_BLOCK pBlock = g_pMemoryBlocks;
PMEMORY_BLOCK pPrev = NULL;
ULONG_PTR pTargetBlock = ((ULONG_PTR)pBuffer / MEMORY_BLOCK_SIZE) * MEMORY_BLOCK_SIZE;
while (pBlock != NULL)
{
if ((ULONG_PTR)pBlock == pTargetBlock)
{
PMEMORY_SLOT pSlot = (PMEMORY_SLOT)pBuffer;
#ifdef _DEBUG
// Clear the released slot for debugging.
memset(pSlot, 0x00, sizeof(*pSlot));
#endif
// Restore the released slot to the list.
pSlot->pNext = pBlock->pFree;
pBlock->pFree = pSlot;
pBlock->usedCount--;
// Free if unused.
if (pBlock->usedCount == 0)
{
if (pPrev)
pPrev->pNext = pBlock->pNext;
else
g_pMemoryBlocks = pBlock->pNext;
VirtualFree(pBlock, 0, MEM_RELEASE);
}
break;
}
pPrev = pBlock;
pBlock = pBlock->pNext;
}
}
//-------------------------------------------------------------------------
BOOL IsExecutableAddress(LPVOID pAddress)
{
MEMORY_BASIC_INFORMATION mi;
VirtualQuery(pAddress, &mi, sizeof(mi));
return (mi.State == MEM_COMMIT && (mi.Protect & PAGE_EXECUTE_FLAGS));
}

42
minhook/buffer.h Normal file
View File

@ -0,0 +1,42 @@
/*
* MinHook - The Minimalistic API Hooking Library for x64/x86
* Copyright (C) 2009-2017 Tsuda Kageyu.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
// Size of each memory slot.
#if defined(_M_X64) || defined(__x86_64__)
#define MEMORY_SLOT_SIZE 64
#else
#define MEMORY_SLOT_SIZE 32
#endif
VOID InitializeBuffer(VOID);
VOID UninitializeBuffer(VOID);
LPVOID AllocateBuffer(LPVOID pOrigin);
VOID FreeBuffer(LPVOID pBuffer);
BOOL IsExecutableAddress(LPVOID pAddress);

326
minhook/hde/hde32.c Normal file
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@ -0,0 +1,326 @@
/*
* Hacker Disassembler Engine 32 C
* Copyright (c) 2008-2009, Vyacheslav Patkov.
* All rights reserved.
*
*/
#if defined(_M_IX86) || defined(__i386__)
#include "hde32.h"
#include "table32.h"
unsigned int hde32_disasm(const void *code, hde32s *hs)
{
uint8_t x, c, *p = (uint8_t *)code, cflags, opcode, pref = 0;
uint8_t *ht = hde32_table, m_mod, m_reg, m_rm, disp_size = 0;
// Avoid using memset to reduce the footprint.
#ifndef _MSC_VER
memset((LPBYTE)hs, 0, sizeof(hde32s));
#else
__stosb((LPBYTE)hs, 0, sizeof(hde32s));
#endif
for (x = 16; x; x--)
switch (c = *p++) {
case 0xf3:
hs->p_rep = c;
pref |= PRE_F3;
break;
case 0xf2:
hs->p_rep = c;
pref |= PRE_F2;
break;
case 0xf0:
hs->p_lock = c;
pref |= PRE_LOCK;
break;
case 0x26: case 0x2e: case 0x36:
case 0x3e: case 0x64: case 0x65:
hs->p_seg = c;
pref |= PRE_SEG;
break;
case 0x66:
hs->p_66 = c;
pref |= PRE_66;
break;
case 0x67:
hs->p_67 = c;
pref |= PRE_67;
break;
default:
goto pref_done;
}
pref_done:
hs->flags = (uint32_t)pref << 23;
if (!pref)
pref |= PRE_NONE;
if ((hs->opcode = c) == 0x0f) {
hs->opcode2 = c = *p++;
ht += DELTA_OPCODES;
} else if (c >= 0xa0 && c <= 0xa3) {
if (pref & PRE_67)
pref |= PRE_66;
else
pref &= ~PRE_66;
}
opcode = c;
cflags = ht[ht[opcode / 4] + (opcode % 4)];
if (cflags == C_ERROR) {
hs->flags |= F_ERROR | F_ERROR_OPCODE;
cflags = 0;
if ((opcode & -3) == 0x24)
cflags++;
}
x = 0;
if (cflags & C_GROUP) {
uint16_t t;
t = *(uint16_t *)(ht + (cflags & 0x7f));
cflags = (uint8_t)t;
x = (uint8_t)(t >> 8);
}
if (hs->opcode2) {
ht = hde32_table + DELTA_PREFIXES;
if (ht[ht[opcode / 4] + (opcode % 4)] & pref)
hs->flags |= F_ERROR | F_ERROR_OPCODE;
}
if (cflags & C_MODRM) {
hs->flags |= F_MODRM;
hs->modrm = c = *p++;
hs->modrm_mod = m_mod = c >> 6;
hs->modrm_rm = m_rm = c & 7;
hs->modrm_reg = m_reg = (c & 0x3f) >> 3;
if (x && ((x << m_reg) & 0x80))
hs->flags |= F_ERROR | F_ERROR_OPCODE;
if (!hs->opcode2 && opcode >= 0xd9 && opcode <= 0xdf) {
uint8_t t = opcode - 0xd9;
if (m_mod == 3) {
ht = hde32_table + DELTA_FPU_MODRM + t*8;
t = ht[m_reg] << m_rm;
} else {
ht = hde32_table + DELTA_FPU_REG;
t = ht[t] << m_reg;
}
if (t & 0x80)
hs->flags |= F_ERROR | F_ERROR_OPCODE;
}
if (pref & PRE_LOCK) {
if (m_mod == 3) {
hs->flags |= F_ERROR | F_ERROR_LOCK;
} else {
uint8_t *table_end, op = opcode;
if (hs->opcode2) {
ht = hde32_table + DELTA_OP2_LOCK_OK;
table_end = ht + DELTA_OP_ONLY_MEM - DELTA_OP2_LOCK_OK;
} else {
ht = hde32_table + DELTA_OP_LOCK_OK;
table_end = ht + DELTA_OP2_LOCK_OK - DELTA_OP_LOCK_OK;
op &= -2;
}
for (; ht != table_end; ht++)
if (*ht++ == op) {
if (!((*ht << m_reg) & 0x80))
goto no_lock_error;
else
break;
}
hs->flags |= F_ERROR | F_ERROR_LOCK;
no_lock_error:
;
}
}
if (hs->opcode2) {
switch (opcode) {
case 0x20: case 0x22:
m_mod = 3;
if (m_reg > 4 || m_reg == 1)
goto error_operand;
else
goto no_error_operand;
case 0x21: case 0x23:
m_mod = 3;
if (m_reg == 4 || m_reg == 5)
goto error_operand;
else
goto no_error_operand;
}
} else {
switch (opcode) {
case 0x8c:
if (m_reg > 5)
goto error_operand;
else
goto no_error_operand;
case 0x8e:
if (m_reg == 1 || m_reg > 5)
goto error_operand;
else
goto no_error_operand;
}
}
if (m_mod == 3) {
uint8_t *table_end;
if (hs->opcode2) {
ht = hde32_table + DELTA_OP2_ONLY_MEM;
table_end = ht + sizeof(hde32_table) - DELTA_OP2_ONLY_MEM;
} else {
ht = hde32_table + DELTA_OP_ONLY_MEM;
table_end = ht + DELTA_OP2_ONLY_MEM - DELTA_OP_ONLY_MEM;
}
for (; ht != table_end; ht += 2)
if (*ht++ == opcode) {
if (*ht++ & pref && !((*ht << m_reg) & 0x80))
goto error_operand;
else
break;
}
goto no_error_operand;
} else if (hs->opcode2) {
switch (opcode) {
case 0x50: case 0xd7: case 0xf7:
if (pref & (PRE_NONE | PRE_66))
goto error_operand;
break;
case 0xd6:
if (pref & (PRE_F2 | PRE_F3))
goto error_operand;
break;
case 0xc5:
goto error_operand;
}
goto no_error_operand;
} else
goto no_error_operand;
error_operand:
hs->flags |= F_ERROR | F_ERROR_OPERAND;
no_error_operand:
c = *p++;
if (m_reg <= 1) {
if (opcode == 0xf6)
cflags |= C_IMM8;
else if (opcode == 0xf7)
cflags |= C_IMM_P66;
}
switch (m_mod) {
case 0:
if (pref & PRE_67) {
if (m_rm == 6)
disp_size = 2;
} else
if (m_rm == 5)
disp_size = 4;
break;
case 1:
disp_size = 1;
break;
case 2:
disp_size = 2;
if (!(pref & PRE_67))
disp_size <<= 1;
}
if (m_mod != 3 && m_rm == 4 && !(pref & PRE_67)) {
hs->flags |= F_SIB;
p++;
hs->sib = c;
hs->sib_scale = c >> 6;
hs->sib_index = (c & 0x3f) >> 3;
if ((hs->sib_base = c & 7) == 5 && !(m_mod & 1))
disp_size = 4;
}
p--;
switch (disp_size) {
case 1:
hs->flags |= F_DISP8;
hs->disp.disp8 = *p;
break;
case 2:
hs->flags |= F_DISP16;
hs->disp.disp16 = *(uint16_t *)p;
break;
case 4:
hs->flags |= F_DISP32;
hs->disp.disp32 = *(uint32_t *)p;
}
p += disp_size;
} else if (pref & PRE_LOCK)
hs->flags |= F_ERROR | F_ERROR_LOCK;
if (cflags & C_IMM_P66) {
if (cflags & C_REL32) {
if (pref & PRE_66) {
hs->flags |= F_IMM16 | F_RELATIVE;
hs->imm.imm16 = *(uint16_t *)p;
p += 2;
goto disasm_done;
}
goto rel32_ok;
}
if (pref & PRE_66) {
hs->flags |= F_IMM16;
hs->imm.imm16 = *(uint16_t *)p;
p += 2;
} else {
hs->flags |= F_IMM32;
hs->imm.imm32 = *(uint32_t *)p;
p += 4;
}
}
if (cflags & C_IMM16) {
if (hs->flags & F_IMM32) {
hs->flags |= F_IMM16;
hs->disp.disp16 = *(uint16_t *)p;
} else if (hs->flags & F_IMM16) {
hs->flags |= F_2IMM16;
hs->disp.disp16 = *(uint16_t *)p;
} else {
hs->flags |= F_IMM16;
hs->imm.imm16 = *(uint16_t *)p;
}
p += 2;
}
if (cflags & C_IMM8) {
hs->flags |= F_IMM8;
hs->imm.imm8 = *p++;
}
if (cflags & C_REL32) {
rel32_ok:
hs->flags |= F_IMM32 | F_RELATIVE;
hs->imm.imm32 = *(uint32_t *)p;
p += 4;
} else if (cflags & C_REL8) {
hs->flags |= F_IMM8 | F_RELATIVE;
hs->imm.imm8 = *p++;
}
disasm_done:
if ((hs->len = (uint8_t)(p-(uint8_t *)code)) > 15) {
hs->flags |= F_ERROR | F_ERROR_LENGTH;
hs->len = 15;
}
return (unsigned int)hs->len;
}
#endif // defined(_M_IX86) || defined(__i386__)

105
minhook/hde/hde32.h Normal file
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/*
* Hacker Disassembler Engine 32
* Copyright (c) 2006-2009, Vyacheslav Patkov.
* All rights reserved.
*
* hde32.h: C/C++ header file
*
*/
#ifndef _HDE32_H_
#define _HDE32_H_
/* stdint.h - C99 standard header
* http://en.wikipedia.org/wiki/stdint.h
*
* if your compiler doesn't contain "stdint.h" header (for
* example, Microsoft Visual C++), you can download file:
* http://www.azillionmonkeys.com/qed/pstdint.h
* and change next line to:
* #include "pstdint.h"
*/
#include "pstdint.h"
#define F_MODRM 0x00000001
#define F_SIB 0x00000002
#define F_IMM8 0x00000004
#define F_IMM16 0x00000008
#define F_IMM32 0x00000010
#define F_DISP8 0x00000020
#define F_DISP16 0x00000040
#define F_DISP32 0x00000080
#define F_RELATIVE 0x00000100
#define F_2IMM16 0x00000800
#define F_ERROR 0x00001000
#define F_ERROR_OPCODE 0x00002000
#define F_ERROR_LENGTH 0x00004000
#define F_ERROR_LOCK 0x00008000
#define F_ERROR_OPERAND 0x00010000
#define F_PREFIX_REPNZ 0x01000000
#define F_PREFIX_REPX 0x02000000
#define F_PREFIX_REP 0x03000000
#define F_PREFIX_66 0x04000000
#define F_PREFIX_67 0x08000000
#define F_PREFIX_LOCK 0x10000000
#define F_PREFIX_SEG 0x20000000
#define F_PREFIX_ANY 0x3f000000
#define PREFIX_SEGMENT_CS 0x2e
#define PREFIX_SEGMENT_SS 0x36
#define PREFIX_SEGMENT_DS 0x3e
#define PREFIX_SEGMENT_ES 0x26
#define PREFIX_SEGMENT_FS 0x64
#define PREFIX_SEGMENT_GS 0x65
#define PREFIX_LOCK 0xf0
#define PREFIX_REPNZ 0xf2
#define PREFIX_REPX 0xf3
#define PREFIX_OPERAND_SIZE 0x66
#define PREFIX_ADDRESS_SIZE 0x67
#pragma pack(push,1)
typedef struct {
uint8_t len;
uint8_t p_rep;
uint8_t p_lock;
uint8_t p_seg;
uint8_t p_66;
uint8_t p_67;
uint8_t opcode;
uint8_t opcode2;
uint8_t modrm;
uint8_t modrm_mod;
uint8_t modrm_reg;
uint8_t modrm_rm;
uint8_t sib;
uint8_t sib_scale;
uint8_t sib_index;
uint8_t sib_base;
union {
uint8_t imm8;
uint16_t imm16;
uint32_t imm32;
} imm;
union {
uint8_t disp8;
uint16_t disp16;
uint32_t disp32;
} disp;
uint32_t flags;
} hde32s;
#pragma pack(pop)
#ifdef __cplusplus
extern "C" {
#endif
/* __cdecl */
unsigned int hde32_disasm(const void *code, hde32s *hs);
#ifdef __cplusplus
}
#endif
#endif /* _HDE32_H_ */

337
minhook/hde/hde64.c Normal file
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/*
* Hacker Disassembler Engine 64 C
* Copyright (c) 2008-2009, Vyacheslav Patkov.
* All rights reserved.
*
*/
#if defined(_M_X64) || defined(__x86_64__)
#include "hde64.h"
#include "table64.h"
unsigned int hde64_disasm(const void *code, hde64s *hs)
{
uint8_t x, c, *p = (uint8_t *)code, cflags, opcode, pref = 0;
uint8_t *ht = hde64_table, m_mod, m_reg, m_rm, disp_size = 0;
uint8_t op64 = 0;
// Avoid using memset to reduce the footprint.
#ifndef _MSC_VER
memset((LPBYTE)hs, 0, sizeof(hde64s));
#else
__stosb((LPBYTE)hs, 0, sizeof(hde64s));
#endif
for (x = 16; x; x--)
switch (c = *p++) {
case 0xf3:
hs->p_rep = c;
pref |= PRE_F3;
break;
case 0xf2:
hs->p_rep = c;
pref |= PRE_F2;
break;
case 0xf0:
hs->p_lock = c;
pref |= PRE_LOCK;
break;
case 0x26: case 0x2e: case 0x36:
case 0x3e: case 0x64: case 0x65:
hs->p_seg = c;
pref |= PRE_SEG;
break;
case 0x66:
hs->p_66 = c;
pref |= PRE_66;
break;
case 0x67:
hs->p_67 = c;
pref |= PRE_67;
break;
default:
goto pref_done;
}
pref_done:
hs->flags = (uint32_t)pref << 23;
if (!pref)
pref |= PRE_NONE;
if ((c & 0xf0) == 0x40) {
hs->flags |= F_PREFIX_REX;
if ((hs->rex_w = (c & 0xf) >> 3) && (*p & 0xf8) == 0xb8)
op64++;
hs->rex_r = (c & 7) >> 2;
hs->rex_x = (c & 3) >> 1;
hs->rex_b = c & 1;
if (((c = *p++) & 0xf0) == 0x40) {
opcode = c;
goto error_opcode;
}
}
if ((hs->opcode = c) == 0x0f) {
hs->opcode2 = c = *p++;
ht += DELTA_OPCODES;
} else if (c >= 0xa0 && c <= 0xa3) {
op64++;
if (pref & PRE_67)
pref |= PRE_66;
else
pref &= ~PRE_66;
}
opcode = c;
cflags = ht[ht[opcode / 4] + (opcode % 4)];
if (cflags == C_ERROR) {
error_opcode:
hs->flags |= F_ERROR | F_ERROR_OPCODE;
cflags = 0;
if ((opcode & -3) == 0x24)
cflags++;
}
x = 0;
if (cflags & C_GROUP) {
uint16_t t;
t = *(uint16_t *)(ht + (cflags & 0x7f));
cflags = (uint8_t)t;
x = (uint8_t)(t >> 8);
}
if (hs->opcode2) {
ht = hde64_table + DELTA_PREFIXES;
if (ht[ht[opcode / 4] + (opcode % 4)] & pref)
hs->flags |= F_ERROR | F_ERROR_OPCODE;
}
if (cflags & C_MODRM) {
hs->flags |= F_MODRM;
hs->modrm = c = *p++;
hs->modrm_mod = m_mod = c >> 6;
hs->modrm_rm = m_rm = c & 7;
hs->modrm_reg = m_reg = (c & 0x3f) >> 3;
if (x && ((x << m_reg) & 0x80))
hs->flags |= F_ERROR | F_ERROR_OPCODE;
if (!hs->opcode2 && opcode >= 0xd9 && opcode <= 0xdf) {
uint8_t t = opcode - 0xd9;
if (m_mod == 3) {
ht = hde64_table + DELTA_FPU_MODRM + t*8;
t = ht[m_reg] << m_rm;
} else {
ht = hde64_table + DELTA_FPU_REG;
t = ht[t] << m_reg;
}
if (t & 0x80)
hs->flags |= F_ERROR | F_ERROR_OPCODE;
}
if (pref & PRE_LOCK) {
if (m_mod == 3) {
hs->flags |= F_ERROR | F_ERROR_LOCK;
} else {
uint8_t *table_end, op = opcode;
if (hs->opcode2) {
ht = hde64_table + DELTA_OP2_LOCK_OK;
table_end = ht + DELTA_OP_ONLY_MEM - DELTA_OP2_LOCK_OK;
} else {
ht = hde64_table + DELTA_OP_LOCK_OK;
table_end = ht + DELTA_OP2_LOCK_OK - DELTA_OP_LOCK_OK;
op &= -2;
}
for (; ht != table_end; ht++)
if (*ht++ == op) {
if (!((*ht << m_reg) & 0x80))
goto no_lock_error;
else
break;
}
hs->flags |= F_ERROR | F_ERROR_LOCK;
no_lock_error:
;
}
}
if (hs->opcode2) {
switch (opcode) {
case 0x20: case 0x22:
m_mod = 3;
if (m_reg > 4 || m_reg == 1)
goto error_operand;
else
goto no_error_operand;
case 0x21: case 0x23:
m_mod = 3;
if (m_reg == 4 || m_reg == 5)
goto error_operand;
else
goto no_error_operand;
}
} else {
switch (opcode) {
case 0x8c:
if (m_reg > 5)
goto error_operand;
else
goto no_error_operand;
case 0x8e:
if (m_reg == 1 || m_reg > 5)
goto error_operand;
else
goto no_error_operand;
}
}
if (m_mod == 3) {
uint8_t *table_end;
if (hs->opcode2) {
ht = hde64_table + DELTA_OP2_ONLY_MEM;
table_end = ht + sizeof(hde64_table) - DELTA_OP2_ONLY_MEM;
} else {
ht = hde64_table + DELTA_OP_ONLY_MEM;
table_end = ht + DELTA_OP2_ONLY_MEM - DELTA_OP_ONLY_MEM;
}
for (; ht != table_end; ht += 2)
if (*ht++ == opcode) {
if (*ht++ & pref && !((*ht << m_reg) & 0x80))
goto error_operand;
else
break;
}
goto no_error_operand;
} else if (hs->opcode2) {
switch (opcode) {
case 0x50: case 0xd7: case 0xf7:
if (pref & (PRE_NONE | PRE_66))
goto error_operand;
break;
case 0xd6:
if (pref & (PRE_F2 | PRE_F3))
goto error_operand;
break;
case 0xc5:
goto error_operand;
}
goto no_error_operand;
} else
goto no_error_operand;
error_operand:
hs->flags |= F_ERROR | F_ERROR_OPERAND;
no_error_operand:
c = *p++;
if (m_reg <= 1) {
if (opcode == 0xf6)
cflags |= C_IMM8;
else if (opcode == 0xf7)
cflags |= C_IMM_P66;
}
switch (m_mod) {
case 0:
if (pref & PRE_67) {
if (m_rm == 6)
disp_size = 2;
} else
if (m_rm == 5)
disp_size = 4;
break;
case 1:
disp_size = 1;
break;
case 2:
disp_size = 2;
if (!(pref & PRE_67))
disp_size <<= 1;
}
if (m_mod != 3 && m_rm == 4) {
hs->flags |= F_SIB;
p++;
hs->sib = c;
hs->sib_scale = c >> 6;
hs->sib_index = (c & 0x3f) >> 3;
if ((hs->sib_base = c & 7) == 5 && !(m_mod & 1))
disp_size = 4;
}
p--;
switch (disp_size) {
case 1:
hs->flags |= F_DISP8;
hs->disp.disp8 = *p;
break;
case 2:
hs->flags |= F_DISP16;
hs->disp.disp16 = *(uint16_t *)p;
break;
case 4:
hs->flags |= F_DISP32;
hs->disp.disp32 = *(uint32_t *)p;
}
p += disp_size;
} else if (pref & PRE_LOCK)
hs->flags |= F_ERROR | F_ERROR_LOCK;
if (cflags & C_IMM_P66) {
if (cflags & C_REL32) {
if (pref & PRE_66) {
hs->flags |= F_IMM16 | F_RELATIVE;
hs->imm.imm16 = *(uint16_t *)p;
p += 2;
goto disasm_done;
}
goto rel32_ok;
}
if (op64) {
hs->flags |= F_IMM64;
hs->imm.imm64 = *(uint64_t *)p;
p += 8;
} else if (!(pref & PRE_66)) {
hs->flags |= F_IMM32;
hs->imm.imm32 = *(uint32_t *)p;
p += 4;
} else
goto imm16_ok;
}
if (cflags & C_IMM16) {
imm16_ok:
hs->flags |= F_IMM16;
hs->imm.imm16 = *(uint16_t *)p;
p += 2;
}
if (cflags & C_IMM8) {
hs->flags |= F_IMM8;
hs->imm.imm8 = *p++;
}
if (cflags & C_REL32) {
rel32_ok:
hs->flags |= F_IMM32 | F_RELATIVE;
hs->imm.imm32 = *(uint32_t *)p;
p += 4;
} else if (cflags & C_REL8) {
hs->flags |= F_IMM8 | F_RELATIVE;
hs->imm.imm8 = *p++;
}
disasm_done:
if ((hs->len = (uint8_t)(p-(uint8_t *)code)) > 15) {
hs->flags |= F_ERROR | F_ERROR_LENGTH;
hs->len = 15;
}
return (unsigned int)hs->len;
}
#endif // defined(_M_X64) || defined(__x86_64__)

112
minhook/hde/hde64.h Normal file
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/*
* Hacker Disassembler Engine 64
* Copyright (c) 2008-2009, Vyacheslav Patkov.
* All rights reserved.
*
* hde64.h: C/C++ header file
*
*/
#ifndef _HDE64_H_
#define _HDE64_H_
/* stdint.h - C99 standard header
* http://en.wikipedia.org/wiki/stdint.h
*
* if your compiler doesn't contain "stdint.h" header (for
* example, Microsoft Visual C++), you can download file:
* http://www.azillionmonkeys.com/qed/pstdint.h
* and change next line to:
* #include "pstdint.h"
*/
#include "pstdint.h"
#define F_MODRM 0x00000001
#define F_SIB 0x00000002
#define F_IMM8 0x00000004
#define F_IMM16 0x00000008
#define F_IMM32 0x00000010
#define F_IMM64 0x00000020
#define F_DISP8 0x00000040
#define F_DISP16 0x00000080
#define F_DISP32 0x00000100
#define F_RELATIVE 0x00000200
#define F_ERROR 0x00001000
#define F_ERROR_OPCODE 0x00002000
#define F_ERROR_LENGTH 0x00004000
#define F_ERROR_LOCK 0x00008000
#define F_ERROR_OPERAND 0x00010000
#define F_PREFIX_REPNZ 0x01000000
#define F_PREFIX_REPX 0x02000000
#define F_PREFIX_REP 0x03000000
#define F_PREFIX_66 0x04000000
#define F_PREFIX_67 0x08000000
#define F_PREFIX_LOCK 0x10000000
#define F_PREFIX_SEG 0x20000000
#define F_PREFIX_REX 0x40000000
#define F_PREFIX_ANY 0x7f000000
#define PREFIX_SEGMENT_CS 0x2e
#define PREFIX_SEGMENT_SS 0x36
#define PREFIX_SEGMENT_DS 0x3e
#define PREFIX_SEGMENT_ES 0x26
#define PREFIX_SEGMENT_FS 0x64
#define PREFIX_SEGMENT_GS 0x65
#define PREFIX_LOCK 0xf0
#define PREFIX_REPNZ 0xf2
#define PREFIX_REPX 0xf3
#define PREFIX_OPERAND_SIZE 0x66
#define PREFIX_ADDRESS_SIZE 0x67
#pragma pack(push,1)
typedef struct {
uint8_t len;
uint8_t p_rep;
uint8_t p_lock;
uint8_t p_seg;
uint8_t p_66;
uint8_t p_67;
uint8_t rex;
uint8_t rex_w;
uint8_t rex_r;
uint8_t rex_x;
uint8_t rex_b;
uint8_t opcode;
uint8_t opcode2;
uint8_t modrm;
uint8_t modrm_mod;
uint8_t modrm_reg;
uint8_t modrm_rm;
uint8_t sib;
uint8_t sib_scale;
uint8_t sib_index;
uint8_t sib_base;
union {
uint8_t imm8;
uint16_t imm16;
uint32_t imm32;
uint64_t imm64;
} imm;
union {
uint8_t disp8;
uint16_t disp16;
uint32_t disp32;
} disp;
uint32_t flags;
} hde64s;
#pragma pack(pop)
#ifdef __cplusplus
extern "C" {
#endif
/* __cdecl */
unsigned int hde64_disasm(const void *code, hde64s *hs);
#ifdef __cplusplus
}
#endif
#endif /* _HDE64_H_ */

39
minhook/hde/pstdint.h Normal file
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@ -0,0 +1,39 @@
/*
* MinHook - The Minimalistic API Hooking Library for x64/x86
* Copyright (C) 2009-2017 Tsuda Kageyu. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <windows.h>
// Integer types for HDE.
typedef INT8 int8_t;
typedef INT16 int16_t;
typedef INT32 int32_t;
typedef INT64 int64_t;
typedef UINT8 uint8_t;
typedef UINT16 uint16_t;
typedef UINT32 uint32_t;
typedef UINT64 uint64_t;

73
minhook/hde/table32.h Normal file
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@ -0,0 +1,73 @@
/*
* Hacker Disassembler Engine 32 C
* Copyright (c) 2008-2009, Vyacheslav Patkov.
* All rights reserved.
*
*/
#define C_NONE 0x00
#define C_MODRM 0x01
#define C_IMM8 0x02
#define C_IMM16 0x04
#define C_IMM_P66 0x10
#define C_REL8 0x20
#define C_REL32 0x40
#define C_GROUP 0x80
#define C_ERROR 0xff
#define PRE_ANY 0x00
#define PRE_NONE 0x01
#define PRE_F2 0x02
#define PRE_F3 0x04
#define PRE_66 0x08
#define PRE_67 0x10
#define PRE_LOCK 0x20
#define PRE_SEG 0x40
#define PRE_ALL 0xff
#define DELTA_OPCODES 0x4a
#define DELTA_FPU_REG 0xf1
#define DELTA_FPU_MODRM 0xf8
#define DELTA_PREFIXES 0x130
#define DELTA_OP_LOCK_OK 0x1a1
#define DELTA_OP2_LOCK_OK 0x1b9
#define DELTA_OP_ONLY_MEM 0x1cb
#define DELTA_OP2_ONLY_MEM 0x1da
unsigned char hde32_table[] = {
0xa3,0xa8,0xa3,0xa8,0xa3,0xa8,0xa3,0xa8,0xa3,0xa8,0xa3,0xa8,0xa3,0xa8,0xa3,
0xa8,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xac,0xaa,0xb2,0xaa,0x9f,0x9f,
0x9f,0x9f,0xb5,0xa3,0xa3,0xa4,0xaa,0xaa,0xba,0xaa,0x96,0xaa,0xa8,0xaa,0xc3,
0xc3,0x96,0x96,0xb7,0xae,0xd6,0xbd,0xa3,0xc5,0xa3,0xa3,0x9f,0xc3,0x9c,0xaa,
0xaa,0xac,0xaa,0xbf,0x03,0x7f,0x11,0x7f,0x01,0x7f,0x01,0x3f,0x01,0x01,0x90,
0x82,0x7d,0x97,0x59,0x59,0x59,0x59,0x59,0x7f,0x59,0x59,0x60,0x7d,0x7f,0x7f,
0x59,0x59,0x59,0x59,0x59,0x59,0x59,0x59,0x59,0x59,0x59,0x59,0x9a,0x88,0x7d,
0x59,0x50,0x50,0x50,0x50,0x59,0x59,0x59,0x59,0x61,0x94,0x61,0x9e,0x59,0x59,
0x85,0x59,0x92,0xa3,0x60,0x60,0x59,0x59,0x59,0x59,0x59,0x59,0x59,0x59,0x59,
0x59,0x59,0x9f,0x01,0x03,0x01,0x04,0x03,0xd5,0x03,0xcc,0x01,0xbc,0x03,0xf0,
0x10,0x10,0x10,0x10,0x50,0x50,0x50,0x50,0x14,0x20,0x20,0x20,0x20,0x01,0x01,
0x01,0x01,0xc4,0x02,0x10,0x00,0x00,0x00,0x00,0x01,0x01,0xc0,0xc2,0x10,0x11,
0x02,0x03,0x11,0x03,0x03,0x04,0x00,0x00,0x14,0x00,0x02,0x00,0x00,0xc6,0xc8,
0x02,0x02,0x02,0x02,0x00,0x00,0xff,0xff,0xff,0xff,0x00,0x00,0x00,0xff,0xca,
0x01,0x01,0x01,0x00,0x06,0x00,0x04,0x00,0xc0,0xc2,0x01,0x01,0x03,0x01,0xff,
0xff,0x01,0x00,0x03,0xc4,0xc4,0xc6,0x03,0x01,0x01,0x01,0xff,0x03,0x03,0x03,
0xc8,0x40,0x00,0x0a,0x00,0x04,0x00,0x00,0x00,0x00,0x7f,0x00,0x33,0x01,0x00,
0x00,0x00,0x00,0x00,0x00,0xff,0xbf,0xff,0xff,0x00,0x00,0x00,0x00,0x07,0x00,
0x00,0xff,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0xff,0xff,0x00,0x00,0x00,0xbf,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x7f,0x00,0x00,0xff,0x4a,0x4a,0x4a,0x4a,0x4b,0x52,0x4a,0x4a,0x4a,0x4a,0x4f,
0x4c,0x4a,0x4a,0x4a,0x4a,0x4a,0x4a,0x4a,0x4a,0x55,0x45,0x40,0x4a,0x4a,0x4a,
0x45,0x59,0x4d,0x46,0x4a,0x5d,0x4a,0x4a,0x4a,0x4a,0x4a,0x4a,0x4a,0x4a,0x4a,
0x4a,0x4a,0x4a,0x4a,0x4a,0x61,0x63,0x67,0x4e,0x4a,0x4a,0x6b,0x6d,0x4a,0x4a,
0x45,0x6d,0x4a,0x4a,0x44,0x45,0x4a,0x4a,0x00,0x00,0x00,0x02,0x0d,0x06,0x06,
0x06,0x06,0x0e,0x00,0x00,0x00,0x00,0x06,0x06,0x06,0x00,0x06,0x06,0x02,0x06,
0x00,0x0a,0x0a,0x07,0x07,0x06,0x02,0x05,0x05,0x02,0x02,0x00,0x00,0x04,0x04,
0x04,0x04,0x00,0x00,0x00,0x0e,0x05,0x06,0x06,0x06,0x01,0x06,0x00,0x00,0x08,
0x00,0x10,0x00,0x18,0x00,0x20,0x00,0x28,0x00,0x30,0x00,0x80,0x01,0x82,0x01,
0x86,0x00,0xf6,0xcf,0xfe,0x3f,0xab,0x00,0xb0,0x00,0xb1,0x00,0xb3,0x00,0xba,
0xf8,0xbb,0x00,0xc0,0x00,0xc1,0x00,0xc7,0xbf,0x62,0xff,0x00,0x8d,0xff,0x00,
0xc4,0xff,0x00,0xc5,0xff,0x00,0xff,0xff,0xeb,0x01,0xff,0x0e,0x12,0x08,0x00,
0x13,0x09,0x00,0x16,0x08,0x00,0x17,0x09,0x00,0x2b,0x09,0x00,0xae,0xff,0x07,
0xb2,0xff,0x00,0xb4,0xff,0x00,0xb5,0xff,0x00,0xc3,0x01,0x00,0xc7,0xff,0xbf,
0xe7,0x08,0x00,0xf0,0x02,0x00
};

74
minhook/hde/table64.h Normal file
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/*
* Hacker Disassembler Engine 64 C
* Copyright (c) 2008-2009, Vyacheslav Patkov.
* All rights reserved.
*
*/
#define C_NONE 0x00
#define C_MODRM 0x01
#define C_IMM8 0x02
#define C_IMM16 0x04
#define C_IMM_P66 0x10
#define C_REL8 0x20
#define C_REL32 0x40
#define C_GROUP 0x80
#define C_ERROR 0xff
#define PRE_ANY 0x00
#define PRE_NONE 0x01
#define PRE_F2 0x02
#define PRE_F3 0x04
#define PRE_66 0x08
#define PRE_67 0x10
#define PRE_LOCK 0x20
#define PRE_SEG 0x40
#define PRE_ALL 0xff
#define DELTA_OPCODES 0x4a
#define DELTA_FPU_REG 0xfd
#define DELTA_FPU_MODRM 0x104
#define DELTA_PREFIXES 0x13c
#define DELTA_OP_LOCK_OK 0x1ae
#define DELTA_OP2_LOCK_OK 0x1c6
#define DELTA_OP_ONLY_MEM 0x1d8
#define DELTA_OP2_ONLY_MEM 0x1e7
unsigned char hde64_table[] = {
0xa5,0xaa,0xa5,0xb8,0xa5,0xaa,0xa5,0xaa,0xa5,0xb8,0xa5,0xb8,0xa5,0xb8,0xa5,
0xb8,0xc0,0xc0,0xc0,0xc0,0xc0,0xc0,0xc0,0xc0,0xac,0xc0,0xcc,0xc0,0xa1,0xa1,
0xa1,0xa1,0xb1,0xa5,0xa5,0xa6,0xc0,0xc0,0xd7,0xda,0xe0,0xc0,0xe4,0xc0,0xea,
0xea,0xe0,0xe0,0x98,0xc8,0xee,0xf1,0xa5,0xd3,0xa5,0xa5,0xa1,0xea,0x9e,0xc0,
0xc0,0xc2,0xc0,0xe6,0x03,0x7f,0x11,0x7f,0x01,0x7f,0x01,0x3f,0x01,0x01,0xab,
0x8b,0x90,0x64,0x5b,0x5b,0x5b,0x5b,0x5b,0x92,0x5b,0x5b,0x76,0x90,0x92,0x92,
0x5b,0x5b,0x5b,0x5b,0x5b,0x5b,0x5b,0x5b,0x5b,0x5b,0x5b,0x5b,0x6a,0x73,0x90,
0x5b,0x52,0x52,0x52,0x52,0x5b,0x5b,0x5b,0x5b,0x77,0x7c,0x77,0x85,0x5b,0x5b,
0x70,0x5b,0x7a,0xaf,0x76,0x76,0x5b,0x5b,0x5b,0x5b,0x5b,0x5b,0x5b,0x5b,0x5b,
0x5b,0x5b,0x86,0x01,0x03,0x01,0x04,0x03,0xd5,0x03,0xd5,0x03,0xcc,0x01,0xbc,
0x03,0xf0,0x03,0x03,0x04,0x00,0x50,0x50,0x50,0x50,0xff,0x20,0x20,0x20,0x20,
0x01,0x01,0x01,0x01,0xc4,0x02,0x10,0xff,0xff,0xff,0x01,0x00,0x03,0x11,0xff,
0x03,0xc4,0xc6,0xc8,0x02,0x10,0x00,0xff,0xcc,0x01,0x01,0x01,0x00,0x00,0x00,
0x00,0x01,0x01,0x03,0x01,0xff,0xff,0xc0,0xc2,0x10,0x11,0x02,0x03,0x01,0x01,
0x01,0xff,0xff,0xff,0x00,0x00,0x00,0xff,0x00,0x00,0xff,0xff,0xff,0xff,0x10,
0x10,0x10,0x10,0x02,0x10,0x00,0x00,0xc6,0xc8,0x02,0x02,0x02,0x02,0x06,0x00,
0x04,0x00,0x02,0xff,0x00,0xc0,0xc2,0x01,0x01,0x03,0x03,0x03,0xca,0x40,0x00,
0x0a,0x00,0x04,0x00,0x00,0x00,0x00,0x7f,0x00,0x33,0x01,0x00,0x00,0x00,0x00,
0x00,0x00,0xff,0xbf,0xff,0xff,0x00,0x00,0x00,0x00,0x07,0x00,0x00,0xff,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xff,0xff,
0x00,0x00,0x00,0xbf,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x7f,0x00,0x00,
0xff,0x40,0x40,0x40,0x40,0x41,0x49,0x40,0x40,0x40,0x40,0x4c,0x42,0x40,0x40,
0x40,0x40,0x40,0x40,0x40,0x40,0x4f,0x44,0x53,0x40,0x40,0x40,0x44,0x57,0x43,
0x5c,0x40,0x60,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,
0x40,0x40,0x64,0x66,0x6e,0x6b,0x40,0x40,0x6a,0x46,0x40,0x40,0x44,0x46,0x40,
0x40,0x5b,0x44,0x40,0x40,0x00,0x00,0x00,0x00,0x06,0x06,0x06,0x06,0x01,0x06,
0x06,0x02,0x06,0x06,0x00,0x06,0x00,0x0a,0x0a,0x00,0x00,0x00,0x02,0x07,0x07,
0x06,0x02,0x0d,0x06,0x06,0x06,0x0e,0x05,0x05,0x02,0x02,0x00,0x00,0x04,0x04,
0x04,0x04,0x05,0x06,0x06,0x06,0x00,0x00,0x00,0x0e,0x00,0x00,0x08,0x00,0x10,
0x00,0x18,0x00,0x20,0x00,0x28,0x00,0x30,0x00,0x80,0x01,0x82,0x01,0x86,0x00,
0xf6,0xcf,0xfe,0x3f,0xab,0x00,0xb0,0x00,0xb1,0x00,0xb3,0x00,0xba,0xf8,0xbb,
0x00,0xc0,0x00,0xc1,0x00,0xc7,0xbf,0x62,0xff,0x00,0x8d,0xff,0x00,0xc4,0xff,
0x00,0xc5,0xff,0x00,0xff,0xff,0xeb,0x01,0xff,0x0e,0x12,0x08,0x00,0x13,0x09,
0x00,0x16,0x08,0x00,0x17,0x09,0x00,0x2b,0x09,0x00,0xae,0xff,0x07,0xb2,0xff,
0x00,0xb4,0xff,0x00,0xb5,0xff,0x00,0xc3,0x01,0x00,0xc7,0xff,0xbf,0xe7,0x08,
0x00,0xf0,0x02,0x00
};

889
minhook/hook.c Normal file
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/*
* MinHook - The Minimalistic API Hooking Library for x64/x86
* Copyright (C) 2009-2017 Tsuda Kageyu.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <windows.h>
#include <tlhelp32.h>
#include <limits.h>
#include "MinHook.h"
#include "buffer.h"
#include "trampoline.h"
#ifndef ARRAYSIZE
#define ARRAYSIZE(A) (sizeof(A)/sizeof((A)[0]))
#endif
// Initial capacity of the HOOK_ENTRY buffer.
#define INITIAL_HOOK_CAPACITY 32
// Initial capacity of the thread IDs buffer.
#define INITIAL_THREAD_CAPACITY 128
// Special hook position values.
#define INVALID_HOOK_POS UINT_MAX
#define ALL_HOOKS_POS UINT_MAX
// Freeze() action argument defines.
#define ACTION_DISABLE 0
#define ACTION_ENABLE 1
#define ACTION_APPLY_QUEUED 2
// Thread access rights for suspending/resuming threads.
#define THREAD_ACCESS \
(THREAD_SUSPEND_RESUME | THREAD_GET_CONTEXT | THREAD_QUERY_INFORMATION | THREAD_SET_CONTEXT)
// Hook information.
typedef struct _HOOK_ENTRY
{
LPVOID pTarget; // Address of the target function.
LPVOID pDetour; // Address of the detour or relay function.
LPVOID pTrampoline; // Address of the trampoline function.
UINT8 backup[8]; // Original prologue of the target function.
UINT8 patchAbove : 1; // Uses the hot patch area.
UINT8 isEnabled : 1; // Enabled.
UINT8 queueEnable : 1; // Queued for enabling/disabling when != isEnabled.
UINT nIP : 4; // Count of the instruction boundaries.
UINT8 oldIPs[8]; // Instruction boundaries of the target function.
UINT8 newIPs[8]; // Instruction boundaries of the trampoline function.
} HOOK_ENTRY, *PHOOK_ENTRY;
// Suspended threads for Freeze()/Unfreeze().
typedef struct _FROZEN_THREADS
{
LPDWORD pItems; // Data heap
UINT capacity; // Size of allocated data heap, items
UINT size; // Actual number of data items
} FROZEN_THREADS, *PFROZEN_THREADS;
//-------------------------------------------------------------------------
// Global Variables:
//-------------------------------------------------------------------------
// Spin lock flag for EnterSpinLock()/LeaveSpinLock().
volatile LONG g_isLocked = FALSE;
// Private heap handle. If not NULL, this library is initialized.
HANDLE g_hHeap = NULL;
// Hook entries.
struct
{
PHOOK_ENTRY pItems; // Data heap
UINT capacity; // Size of allocated data heap, items
UINT size; // Actual number of data items
} g_hooks;
//-------------------------------------------------------------------------
// Returns INVALID_HOOK_POS if not found.
static UINT FindHookEntry(LPVOID pTarget)
{
UINT i;
for (i = 0; i < g_hooks.size; ++i)
{
if ((ULONG_PTR)pTarget == (ULONG_PTR)g_hooks.pItems[i].pTarget)
return i;
}
return INVALID_HOOK_POS;
}
//-------------------------------------------------------------------------
static PHOOK_ENTRY AddHookEntry()
{
if (g_hooks.pItems == NULL)
{
g_hooks.capacity = INITIAL_HOOK_CAPACITY;
g_hooks.pItems = (PHOOK_ENTRY)HeapAlloc(
g_hHeap, 0, g_hooks.capacity * sizeof(HOOK_ENTRY));
if (g_hooks.pItems == NULL)
return NULL;
}
else if (g_hooks.size >= g_hooks.capacity)
{
PHOOK_ENTRY p = (PHOOK_ENTRY)HeapReAlloc(
g_hHeap, 0, g_hooks.pItems, (g_hooks.capacity * 2) * sizeof(HOOK_ENTRY));
if (p == NULL)
return NULL;
g_hooks.capacity *= 2;
g_hooks.pItems = p;
}
return &g_hooks.pItems[g_hooks.size++];
}
//-------------------------------------------------------------------------
static void DeleteHookEntry(UINT pos)
{
if (pos < g_hooks.size - 1)
g_hooks.pItems[pos] = g_hooks.pItems[g_hooks.size - 1];
g_hooks.size--;
if (g_hooks.capacity / 2 >= INITIAL_HOOK_CAPACITY && g_hooks.capacity / 2 >= g_hooks.size)
{
PHOOK_ENTRY p = (PHOOK_ENTRY)HeapReAlloc(
g_hHeap, 0, g_hooks.pItems, (g_hooks.capacity / 2) * sizeof(HOOK_ENTRY));
if (p == NULL)
return;
g_hooks.capacity /= 2;
g_hooks.pItems = p;
}
}
//-------------------------------------------------------------------------
static DWORD_PTR FindOldIP(PHOOK_ENTRY pHook, DWORD_PTR ip)
{
UINT i;
if (pHook->patchAbove && ip == ((DWORD_PTR)pHook->pTarget - sizeof(JMP_REL)))
return (DWORD_PTR)pHook->pTarget;
for (i = 0; i < pHook->nIP; ++i)
{
if (ip == ((DWORD_PTR)pHook->pTrampoline + pHook->newIPs[i]))
return (DWORD_PTR)pHook->pTarget + pHook->oldIPs[i];
}
#if defined(_M_X64) || defined(__x86_64__)
// Check relay function.
if (ip == (DWORD_PTR)pHook->pDetour)
return (DWORD_PTR)pHook->pTarget;
#endif
return 0;
}
//-------------------------------------------------------------------------
static DWORD_PTR FindNewIP(PHOOK_ENTRY pHook, DWORD_PTR ip)
{
UINT i;
for (i = 0; i < pHook->nIP; ++i)
{
if (ip == ((DWORD_PTR)pHook->pTarget + pHook->oldIPs[i]))
return (DWORD_PTR)pHook->pTrampoline + pHook->newIPs[i];
}
return 0;
}
//-------------------------------------------------------------------------
static void ProcessThreadIPs(HANDLE hThread, UINT pos, UINT action)
{
// If the thread suspended in the overwritten area,
// move IP to the proper address.
CONTEXT c;
#if defined(_M_X64) || defined(__x86_64__)
DWORD64 *pIP = &c.Rip;
#else
DWORD *pIP = &c.Eip;
#endif
UINT count;
c.ContextFlags = CONTEXT_CONTROL;
if (!GetThreadContext(hThread, &c))
return;
if (pos == ALL_HOOKS_POS)
{
pos = 0;
count = g_hooks.size;
}
else
{
count = pos + 1;
}
for (; pos < count; ++pos)
{
PHOOK_ENTRY pHook = &g_hooks.pItems[pos];
BOOL enable;
DWORD_PTR ip;
switch (action)
{
case ACTION_DISABLE:
enable = FALSE;
break;
case ACTION_ENABLE:
enable = TRUE;
break;
default: // ACTION_APPLY_QUEUED
enable = pHook->queueEnable;
break;
}
if (pHook->isEnabled == enable)
continue;
if (enable)
ip = FindNewIP(pHook, *pIP);
else
ip = FindOldIP(pHook, *pIP);
if (ip != 0)
{
*pIP = ip;
SetThreadContext(hThread, &c);
}
}
}
//-------------------------------------------------------------------------
static VOID EnumerateThreads(PFROZEN_THREADS pThreads)
{
HANDLE hSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPTHREAD, 0);
if (hSnapshot != INVALID_HANDLE_VALUE)
{
THREADENTRY32 te;
te.dwSize = sizeof(THREADENTRY32);
if (Thread32First(hSnapshot, &te))
{
do
{
if (te.dwSize >= (FIELD_OFFSET(THREADENTRY32, th32OwnerProcessID) + sizeof(DWORD))
&& te.th32OwnerProcessID == GetCurrentProcessId()
&& te.th32ThreadID != GetCurrentThreadId())
{
if (pThreads->pItems == NULL)
{
pThreads->capacity = INITIAL_THREAD_CAPACITY;
pThreads->pItems
= (LPDWORD)HeapAlloc(g_hHeap, 0, pThreads->capacity * sizeof(DWORD));
if (pThreads->pItems == NULL)
break;
}
else if (pThreads->size >= pThreads->capacity)
{
LPDWORD p = (LPDWORD)HeapReAlloc(
g_hHeap, 0, pThreads->pItems, (pThreads->capacity * 2) * sizeof(DWORD));
if (p == NULL)
break;
pThreads->capacity *= 2;
pThreads->pItems = p;
}
pThreads->pItems[pThreads->size++] = te.th32ThreadID;
}
te.dwSize = sizeof(THREADENTRY32);
} while (Thread32Next(hSnapshot, &te));
}
CloseHandle(hSnapshot);
}
}
//-------------------------------------------------------------------------
static VOID Freeze(PFROZEN_THREADS pThreads, UINT pos, UINT action)
{
pThreads->pItems = NULL;
pThreads->capacity = 0;
pThreads->size = 0;
EnumerateThreads(pThreads);
if (pThreads->pItems != NULL)
{
UINT i;
for (i = 0; i < pThreads->size; ++i)
{
HANDLE hThread = OpenThread(THREAD_ACCESS, FALSE, pThreads->pItems[i]);
if (hThread != NULL)
{
SuspendThread(hThread);
ProcessThreadIPs(hThread, pos, action);
CloseHandle(hThread);
}
}
}
}
//-------------------------------------------------------------------------
static VOID Unfreeze(PFROZEN_THREADS pThreads)
{
if (pThreads->pItems != NULL)
{
UINT i;
for (i = 0; i < pThreads->size; ++i)
{
HANDLE hThread = OpenThread(THREAD_ACCESS, FALSE, pThreads->pItems[i]);
if (hThread != NULL)
{
ResumeThread(hThread);
CloseHandle(hThread);
}
}
HeapFree(g_hHeap, 0, pThreads->pItems);
}
}
//-------------------------------------------------------------------------
static MH_STATUS EnableHookLL(UINT pos, BOOL enable)
{
PHOOK_ENTRY pHook = &g_hooks.pItems[pos];
DWORD oldProtect;
SIZE_T patchSize = sizeof(JMP_REL);
LPBYTE pPatchTarget = (LPBYTE)pHook->pTarget;
if (pHook->patchAbove)
{
pPatchTarget -= sizeof(JMP_REL);
patchSize += sizeof(JMP_REL_SHORT);
}
if (!VirtualProtect(pPatchTarget, patchSize, PAGE_EXECUTE_READWRITE, &oldProtect))
return MH_ERROR_MEMORY_PROTECT;
if (enable)
{
PJMP_REL pJmp = (PJMP_REL)pPatchTarget;
pJmp->opcode = 0xE9;
pJmp->operand = (UINT32)((LPBYTE)pHook->pDetour - (pPatchTarget + sizeof(JMP_REL)));
if (pHook->patchAbove)
{
PJMP_REL_SHORT pShortJmp = (PJMP_REL_SHORT)pHook->pTarget;
pShortJmp->opcode = 0xEB;
pShortJmp->operand = (UINT8)(0 - (sizeof(JMP_REL_SHORT) + sizeof(JMP_REL)));
}
}
else
{
if (pHook->patchAbove)
memcpy(pPatchTarget, pHook->backup, sizeof(JMP_REL) + sizeof(JMP_REL_SHORT));
else
memcpy(pPatchTarget, pHook->backup, sizeof(JMP_REL));
}
VirtualProtect(pPatchTarget, patchSize, oldProtect, &oldProtect);
// Just-in-case measure.
FlushInstructionCache(GetCurrentProcess(), pPatchTarget, patchSize);
pHook->isEnabled = enable;
pHook->queueEnable = enable;
return MH_OK;
}
//-------------------------------------------------------------------------
static MH_STATUS EnableAllHooksLL(BOOL enable)
{
MH_STATUS status = MH_OK;
UINT i, first = INVALID_HOOK_POS;
for (i = 0; i < g_hooks.size; ++i)
{
if (g_hooks.pItems[i].isEnabled != enable)
{
first = i;
break;
}
}
if (first != INVALID_HOOK_POS)
{
FROZEN_THREADS threads;
Freeze(&threads, ALL_HOOKS_POS, enable ? ACTION_ENABLE : ACTION_DISABLE);
for (i = first; i < g_hooks.size; ++i)
{
if (g_hooks.pItems[i].isEnabled != enable)
{
status = EnableHookLL(i, enable);
if (status != MH_OK)
break;
}
}
Unfreeze(&threads);
}
return status;
}
//-------------------------------------------------------------------------
static VOID EnterSpinLock(VOID)
{
SIZE_T spinCount = 0;
// Wait until the flag is FALSE.
while (InterlockedCompareExchange(&g_isLocked, TRUE, FALSE) != FALSE)
{
// No need to generate a memory barrier here, since InterlockedCompareExchange()
// generates a full memory barrier itself.
// Prevent the loop from being too busy.
if (spinCount < 32)
Sleep(0);
else
Sleep(1);
spinCount++;
}
}
//-------------------------------------------------------------------------
static VOID LeaveSpinLock(VOID)
{
// No need to generate a memory barrier here, since InterlockedExchange()
// generates a full memory barrier itself.
InterlockedExchange(&g_isLocked, FALSE);
}
//-------------------------------------------------------------------------
MH_STATUS WINAPI MH_Initialize(VOID)
{
MH_STATUS status = MH_OK;
EnterSpinLock();
if (g_hHeap == NULL)
{
g_hHeap = HeapCreate(0, 0, 0);
if (g_hHeap != NULL)
{
// Initialize the internal function buffer.
InitializeBuffer();
}
else
{
status = MH_ERROR_MEMORY_ALLOC;
}
}
else
{
status = MH_ERROR_ALREADY_INITIALIZED;
}
LeaveSpinLock();
return status;
}
//-------------------------------------------------------------------------
MH_STATUS WINAPI MH_Uninitialize(VOID)
{
MH_STATUS status = MH_OK;
EnterSpinLock();
if (g_hHeap != NULL)
{
status = EnableAllHooksLL(FALSE);
if (status == MH_OK)
{
// Free the internal function buffer.
// HeapFree is actually not required, but some tools detect a false
// memory leak without HeapFree.
UninitializeBuffer();
HeapFree(g_hHeap, 0, g_hooks.pItems);
HeapDestroy(g_hHeap);
g_hHeap = NULL;
g_hooks.pItems = NULL;
g_hooks.capacity = 0;
g_hooks.size = 0;
}
}
else
{
status = MH_ERROR_NOT_INITIALIZED;
}
LeaveSpinLock();
return status;
}
//-------------------------------------------------------------------------
MH_STATUS WINAPI MH_CreateHook(LPVOID pTarget, LPVOID pDetour, LPVOID *ppOriginal)
{
MH_STATUS status = MH_OK;
EnterSpinLock();
if (g_hHeap != NULL)
{
if (IsExecutableAddress(pTarget) && IsExecutableAddress(pDetour))
{
UINT pos = FindHookEntry(pTarget);
if (pos == INVALID_HOOK_POS)
{
LPVOID pBuffer = AllocateBuffer(pTarget);
if (pBuffer != NULL)
{
TRAMPOLINE ct;
ct.pTarget = pTarget;
ct.pDetour = pDetour;
ct.pTrampoline = pBuffer;
if (CreateTrampolineFunction(&ct))
{
PHOOK_ENTRY pHook = AddHookEntry();
if (pHook != NULL)
{
pHook->pTarget = ct.pTarget;
#if defined(_M_X64) || defined(__x86_64__)
pHook->pDetour = ct.pRelay;
#else
pHook->pDetour = ct.pDetour;
#endif
pHook->pTrampoline = ct.pTrampoline;
pHook->patchAbove = ct.patchAbove;
pHook->isEnabled = FALSE;
pHook->queueEnable = FALSE;
pHook->nIP = ct.nIP;
memcpy(pHook->oldIPs, ct.oldIPs, ARRAYSIZE(ct.oldIPs));
memcpy(pHook->newIPs, ct.newIPs, ARRAYSIZE(ct.newIPs));
// Back up the target function.
if (ct.patchAbove)
{
memcpy(
pHook->backup,
(LPBYTE)pTarget - sizeof(JMP_REL),
sizeof(JMP_REL) + sizeof(JMP_REL_SHORT));
}
else
{
memcpy(pHook->backup, pTarget, sizeof(JMP_REL));
}
if (ppOriginal != NULL)
*ppOriginal = pHook->pTrampoline;
}
else
{
status = MH_ERROR_MEMORY_ALLOC;
}
}
else
{
status = MH_ERROR_UNSUPPORTED_FUNCTION;
}
if (status != MH_OK)
{
FreeBuffer(pBuffer);
}
}
else
{
status = MH_ERROR_MEMORY_ALLOC;
}
}
else
{
status = MH_ERROR_ALREADY_CREATED;
}
}
else
{
status = MH_ERROR_NOT_EXECUTABLE;
}
}
else
{
status = MH_ERROR_NOT_INITIALIZED;
}
LeaveSpinLock();
return status;
}
//-------------------------------------------------------------------------
MH_STATUS WINAPI MH_RemoveHook(LPVOID pTarget)
{
MH_STATUS status = MH_OK;
EnterSpinLock();
if (g_hHeap != NULL)
{
UINT pos = FindHookEntry(pTarget);
if (pos != INVALID_HOOK_POS)
{
if (g_hooks.pItems[pos].isEnabled)
{
FROZEN_THREADS threads;
Freeze(&threads, pos, ACTION_DISABLE);
status = EnableHookLL(pos, FALSE);
Unfreeze(&threads);
}
if (status == MH_OK)
{
FreeBuffer(g_hooks.pItems[pos].pTrampoline);
DeleteHookEntry(pos);
}
}
else
{
status = MH_ERROR_NOT_CREATED;
}
}
else
{
status = MH_ERROR_NOT_INITIALIZED;
}
LeaveSpinLock();
return status;
}
//-------------------------------------------------------------------------
static MH_STATUS EnableHook(LPVOID pTarget, BOOL enable)
{
MH_STATUS status = MH_OK;
EnterSpinLock();
if (g_hHeap != NULL)
{
if (pTarget == MH_ALL_HOOKS)
{
status = EnableAllHooksLL(enable);
}
else
{
FROZEN_THREADS threads;
UINT pos = FindHookEntry(pTarget);
if (pos != INVALID_HOOK_POS)
{
if (g_hooks.pItems[pos].isEnabled != enable)
{
Freeze(&threads, pos, ACTION_ENABLE);
status = EnableHookLL(pos, enable);
Unfreeze(&threads);
}
else
{
status = enable ? MH_ERROR_ENABLED : MH_ERROR_DISABLED;
}
}
else
{
status = MH_ERROR_NOT_CREATED;
}
}
}
else
{
status = MH_ERROR_NOT_INITIALIZED;
}
LeaveSpinLock();
return status;
}
//-------------------------------------------------------------------------
MH_STATUS WINAPI MH_EnableHook(LPVOID pTarget)
{
return EnableHook(pTarget, TRUE);
}
//-------------------------------------------------------------------------
MH_STATUS WINAPI MH_DisableHook(LPVOID pTarget)
{
return EnableHook(pTarget, FALSE);
}
//-------------------------------------------------------------------------
static MH_STATUS QueueHook(LPVOID pTarget, BOOL queueEnable)
{
MH_STATUS status = MH_OK;
EnterSpinLock();
if (g_hHeap != NULL)
{
if (pTarget == MH_ALL_HOOKS)
{
UINT i;
for (i = 0; i < g_hooks.size; ++i)
g_hooks.pItems[i].queueEnable = queueEnable;
}
else
{
UINT pos = FindHookEntry(pTarget);
if (pos != INVALID_HOOK_POS)
{
g_hooks.pItems[pos].queueEnable = queueEnable;
}
else
{
status = MH_ERROR_NOT_CREATED;
}
}
}
else
{
status = MH_ERROR_NOT_INITIALIZED;
}
LeaveSpinLock();
return status;
}
//-------------------------------------------------------------------------
MH_STATUS WINAPI MH_QueueEnableHook(LPVOID pTarget)
{
return QueueHook(pTarget, TRUE);
}
//-------------------------------------------------------------------------
MH_STATUS WINAPI MH_QueueDisableHook(LPVOID pTarget)
{
return QueueHook(pTarget, FALSE);
}
//-------------------------------------------------------------------------
MH_STATUS WINAPI MH_ApplyQueued(VOID)
{
MH_STATUS status = MH_OK;
UINT i, first = INVALID_HOOK_POS;
EnterSpinLock();
if (g_hHeap != NULL)
{
for (i = 0; i < g_hooks.size; ++i)
{
if (g_hooks.pItems[i].isEnabled != g_hooks.pItems[i].queueEnable)
{
first = i;
break;
}
}
if (first != INVALID_HOOK_POS)
{
FROZEN_THREADS threads;
Freeze(&threads, ALL_HOOKS_POS, ACTION_APPLY_QUEUED);
for (i = first; i < g_hooks.size; ++i)
{
PHOOK_ENTRY pHook = &g_hooks.pItems[i];
if (pHook->isEnabled != pHook->queueEnable)
{
status = EnableHookLL(i, pHook->queueEnable);
if (status != MH_OK)
break;
}
}
Unfreeze(&threads);
}
}
else
{
status = MH_ERROR_NOT_INITIALIZED;
}
LeaveSpinLock();
return status;
}
//-------------------------------------------------------------------------
MH_STATUS WINAPI MH_CreateHookApiEx(
LPCWSTR pszModule, LPCSTR pszProcName, LPVOID pDetour,
LPVOID *ppOriginal, LPVOID *ppTarget)
{
HMODULE hModule;
LPVOID pTarget;
hModule = GetModuleHandleW(pszModule);
if (hModule == NULL)
return MH_ERROR_MODULE_NOT_FOUND;
pTarget = (LPVOID)GetProcAddress(hModule, pszProcName);
if (pTarget == NULL)
return MH_ERROR_FUNCTION_NOT_FOUND;
if(ppTarget != NULL)
*ppTarget = pTarget;
return MH_CreateHook(pTarget, pDetour, ppOriginal);
}
//-------------------------------------------------------------------------
MH_STATUS WINAPI MH_CreateHookApi(
LPCWSTR pszModule, LPCSTR pszProcName, LPVOID pDetour, LPVOID *ppOriginal)
{
return MH_CreateHookApiEx(pszModule, pszProcName, pDetour, ppOriginal, NULL);
}
//-------------------------------------------------------------------------
const char * WINAPI MH_StatusToString(MH_STATUS status)
{
#define MH_ST2STR(x) \
case x: \
return #x;
switch (status) {
MH_ST2STR(MH_UNKNOWN)
MH_ST2STR(MH_OK)
MH_ST2STR(MH_ERROR_ALREADY_INITIALIZED)
MH_ST2STR(MH_ERROR_NOT_INITIALIZED)
MH_ST2STR(MH_ERROR_ALREADY_CREATED)
MH_ST2STR(MH_ERROR_NOT_CREATED)
MH_ST2STR(MH_ERROR_ENABLED)
MH_ST2STR(MH_ERROR_DISABLED)
MH_ST2STR(MH_ERROR_NOT_EXECUTABLE)
MH_ST2STR(MH_ERROR_UNSUPPORTED_FUNCTION)
MH_ST2STR(MH_ERROR_MEMORY_ALLOC)
MH_ST2STR(MH_ERROR_MEMORY_PROTECT)
MH_ST2STR(MH_ERROR_MODULE_NOT_FOUND)
MH_ST2STR(MH_ERROR_FUNCTION_NOT_FOUND)
}
#undef MH_ST2STR
return "(unknown)";
}

316
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/*
* MinHook - The Minimalistic API Hooking Library for x64/x86
* Copyright (C) 2009-2017 Tsuda Kageyu.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <windows.h>
#ifndef ARRAYSIZE
#define ARRAYSIZE(A) (sizeof(A)/sizeof((A)[0]))
#endif
#if defined(_M_X64) || defined(__x86_64__)
#include "./hde/hde64.h"
typedef hde64s HDE;
#define HDE_DISASM(code, hs) hde64_disasm(code, hs)
#else
#include "./hde/hde32.h"
typedef hde32s HDE;
#define HDE_DISASM(code, hs) hde32_disasm(code, hs)
#endif
#include "trampoline.h"
#include "buffer.h"
// Maximum size of a trampoline function.
#if defined(_M_X64) || defined(__x86_64__)
#define TRAMPOLINE_MAX_SIZE (MEMORY_SLOT_SIZE - sizeof(JMP_ABS))
#else
#define TRAMPOLINE_MAX_SIZE MEMORY_SLOT_SIZE
#endif
//-------------------------------------------------------------------------
static BOOL IsCodePadding(LPBYTE pInst, UINT size)
{
UINT i;
if (pInst[0] != 0x00 && pInst[0] != 0x90 && pInst[0] != 0xCC)
return FALSE;
for (i = 1; i < size; ++i)
{
if (pInst[i] != pInst[0])
return FALSE;
}
return TRUE;
}
//-------------------------------------------------------------------------
BOOL CreateTrampolineFunction(PTRAMPOLINE ct)
{
#if defined(_M_X64) || defined(__x86_64__)
CALL_ABS call = {
0xFF, 0x15, 0x00000002, // FF15 00000002: CALL [RIP+8]
0xEB, 0x08, // EB 08: JMP +10
0x0000000000000000ULL // Absolute destination address
};
JMP_ABS jmp = {
0xFF, 0x25, 0x00000000, // FF25 00000000: JMP [RIP+6]
0x0000000000000000ULL // Absolute destination address
};
JCC_ABS jcc = {
0x70, 0x0E, // 7* 0E: J** +16
0xFF, 0x25, 0x00000000, // FF25 00000000: JMP [RIP+6]
0x0000000000000000ULL // Absolute destination address
};
#else
CALL_REL call = {
0xE8, // E8 xxxxxxxx: CALL +5+xxxxxxxx
0x00000000 // Relative destination address
};
JMP_REL jmp = {
0xE9, // E9 xxxxxxxx: JMP +5+xxxxxxxx
0x00000000 // Relative destination address
};
JCC_REL jcc = {
0x0F, 0x80, // 0F8* xxxxxxxx: J** +6+xxxxxxxx
0x00000000 // Relative destination address
};
#endif
UINT8 oldPos = 0;
UINT8 newPos = 0;
ULONG_PTR jmpDest = 0; // Destination address of an internal jump.
BOOL finished = FALSE; // Is the function completed?
#if defined(_M_X64) || defined(__x86_64__)
UINT8 instBuf[16];
#endif
ct->patchAbove = FALSE;
ct->nIP = 0;
do
{
HDE hs;
UINT copySize;
LPVOID pCopySrc;
ULONG_PTR pOldInst = (ULONG_PTR)ct->pTarget + oldPos;
ULONG_PTR pNewInst = (ULONG_PTR)ct->pTrampoline + newPos;
copySize = HDE_DISASM((LPVOID)pOldInst, &hs);
if (hs.flags & F_ERROR)
return FALSE;
pCopySrc = (LPVOID)pOldInst;
if (oldPos >= sizeof(JMP_REL))
{
// The trampoline function is long enough.
// Complete the function with the jump to the target function.
#if defined(_M_X64) || defined(__x86_64__)
jmp.address = pOldInst;
#else
jmp.operand = (UINT32)(pOldInst - (pNewInst + sizeof(jmp)));
#endif
pCopySrc = &jmp;
copySize = sizeof(jmp);
finished = TRUE;
}
#if defined(_M_X64) || defined(__x86_64__)
else if ((hs.modrm & 0xC7) == 0x05)
{
// Instructions using RIP relative addressing. (ModR/M = 00???101B)
// Modify the RIP relative address.
PUINT32 pRelAddr;
// Avoid using memcpy to reduce the footprint.
#ifndef _MSC_VER
memcpy(instBuf, (LPBYTE)pOldInst, copySize);
#else
__movsb(instBuf, (LPBYTE)pOldInst, copySize);
#endif
pCopySrc = instBuf;
// Relative address is stored at (instruction length - immediate value length - 4).
pRelAddr = (PUINT32)(instBuf + hs.len - ((hs.flags & 0x3C) >> 2) - 4);
*pRelAddr
= (UINT32)((pOldInst + hs.len + (INT32)hs.disp.disp32) - (pNewInst + hs.len));
// Complete the function if JMP (FF /4).
if (hs.opcode == 0xFF && hs.modrm_reg == 4)
finished = TRUE;
}
#endif
else if (hs.opcode == 0xE8)
{
// Direct relative CALL
ULONG_PTR dest = pOldInst + hs.len + (INT32)hs.imm.imm32;
#if defined(_M_X64) || defined(__x86_64__)
call.address = dest;
#else
call.operand = (UINT32)(dest - (pNewInst + sizeof(call)));
#endif
pCopySrc = &call;
copySize = sizeof(call);
}
else if ((hs.opcode & 0xFD) == 0xE9)
{
// Direct relative JMP (EB or E9)
ULONG_PTR dest = pOldInst + hs.len;
if (hs.opcode == 0xEB) // isShort jmp
dest += (INT8)hs.imm.imm8;
else
dest += (INT32)hs.imm.imm32;
// Simply copy an internal jump.
if ((ULONG_PTR)ct->pTarget <= dest
&& dest < ((ULONG_PTR)ct->pTarget + sizeof(JMP_REL)))
{
if (jmpDest < dest)
jmpDest = dest;
}
else
{
#if defined(_M_X64) || defined(__x86_64__)
jmp.address = dest;
#else
jmp.operand = (UINT32)(dest - (pNewInst + sizeof(jmp)));
#endif
pCopySrc = &jmp;
copySize = sizeof(jmp);
// Exit the function If it is not in the branch
finished = (pOldInst >= jmpDest);
}
}
else if ((hs.opcode & 0xF0) == 0x70
|| (hs.opcode & 0xFC) == 0xE0
|| (hs.opcode2 & 0xF0) == 0x80)
{
// Direct relative Jcc
ULONG_PTR dest = pOldInst + hs.len;
if ((hs.opcode & 0xF0) == 0x70 // Jcc
|| (hs.opcode & 0xFC) == 0xE0) // LOOPNZ/LOOPZ/LOOP/JECXZ
dest += (INT8)hs.imm.imm8;
else
dest += (INT32)hs.imm.imm32;
// Simply copy an internal jump.
if ((ULONG_PTR)ct->pTarget <= dest
&& dest < ((ULONG_PTR)ct->pTarget + sizeof(JMP_REL)))
{
if (jmpDest < dest)
jmpDest = dest;
}
else if ((hs.opcode & 0xFC) == 0xE0)
{
// LOOPNZ/LOOPZ/LOOP/JCXZ/JECXZ to the outside are not supported.
return FALSE;
}
else
{
UINT8 cond = ((hs.opcode != 0x0F ? hs.opcode : hs.opcode2) & 0x0F);
#if defined(_M_X64) || defined(__x86_64__)
// Invert the condition in x64 mode to simplify the conditional jump logic.
jcc.opcode = 0x71 ^ cond;
jcc.address = dest;
#else
jcc.opcode1 = 0x80 | cond;
jcc.operand = (UINT32)(dest - (pNewInst + sizeof(jcc)));
#endif
pCopySrc = &jcc;
copySize = sizeof(jcc);
}
}
else if ((hs.opcode & 0xFE) == 0xC2)
{
// RET (C2 or C3)
// Complete the function if not in a branch.
finished = (pOldInst >= jmpDest);
}
// Can't alter the instruction length in a branch.
if (pOldInst < jmpDest && copySize != hs.len)
return FALSE;
// Trampoline function is too large.
if ((newPos + copySize) > TRAMPOLINE_MAX_SIZE)
return FALSE;
// Trampoline function has too many instructions.
if (ct->nIP >= ARRAYSIZE(ct->oldIPs))
return FALSE;
ct->oldIPs[ct->nIP] = oldPos;
ct->newIPs[ct->nIP] = newPos;
ct->nIP++;
// Avoid using memcpy to reduce the footprint.
#ifndef _MSC_VER
memcpy((LPBYTE)ct->pTrampoline + newPos, pCopySrc, copySize);
#else
__movsb((LPBYTE)ct->pTrampoline + newPos, pCopySrc, copySize);
#endif
newPos += copySize;
oldPos += hs.len;
}
while (!finished);
// Is there enough place for a long jump?
if (oldPos < sizeof(JMP_REL)
&& !IsCodePadding((LPBYTE)ct->pTarget + oldPos, sizeof(JMP_REL) - oldPos))
{
// Is there enough place for a short jump?
if (oldPos < sizeof(JMP_REL_SHORT)
&& !IsCodePadding((LPBYTE)ct->pTarget + oldPos, sizeof(JMP_REL_SHORT) - oldPos))
{
return FALSE;
}
// Can we place the long jump above the function?
if (!IsExecutableAddress((LPBYTE)ct->pTarget - sizeof(JMP_REL)))
return FALSE;
if (!IsCodePadding((LPBYTE)ct->pTarget - sizeof(JMP_REL), sizeof(JMP_REL)))
return FALSE;
ct->patchAbove = TRUE;
}
#if defined(_M_X64) || defined(__x86_64__)
// Create a relay function.
jmp.address = (ULONG_PTR)ct->pDetour;
ct->pRelay = (LPBYTE)ct->pTrampoline + newPos;
memcpy(ct->pRelay, &jmp, sizeof(jmp));
#endif
return TRUE;
}

105
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/*
* MinHook - The Minimalistic API Hooking Library for x64/x86
* Copyright (C) 2009-2017 Tsuda Kageyu.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#pragma pack(push, 1)
// Structs for writing x86/x64 instructions.
// 8-bit relative jump.
typedef struct _JMP_REL_SHORT
{
UINT8 opcode; // EB xx: JMP +2+xx
UINT8 operand;
} JMP_REL_SHORT, *PJMP_REL_SHORT;
// 32-bit direct relative jump/call.
typedef struct _JMP_REL
{
UINT8 opcode; // E9/E8 xxxxxxxx: JMP/CALL +5+xxxxxxxx
UINT32 operand; // Relative destination address
} JMP_REL, *PJMP_REL, CALL_REL;
// 64-bit indirect absolute jump.
typedef struct _JMP_ABS
{
UINT8 opcode0; // FF25 00000000: JMP [+6]
UINT8 opcode1;
UINT32 dummy;
UINT64 address; // Absolute destination address
} JMP_ABS, *PJMP_ABS;
// 64-bit indirect absolute call.
typedef struct _CALL_ABS
{
UINT8 opcode0; // FF15 00000002: CALL [+6]
UINT8 opcode1;
UINT32 dummy0;
UINT8 dummy1; // EB 08: JMP +10
UINT8 dummy2;
UINT64 address; // Absolute destination address
} CALL_ABS;
// 32-bit direct relative conditional jumps.
typedef struct _JCC_REL
{
UINT8 opcode0; // 0F8* xxxxxxxx: J** +6+xxxxxxxx
UINT8 opcode1;
UINT32 operand; // Relative destination address
} JCC_REL;
// 64bit indirect absolute conditional jumps that x64 lacks.
typedef struct _JCC_ABS
{
UINT8 opcode; // 7* 0E: J** +16
UINT8 dummy0;
UINT8 dummy1; // FF25 00000000: JMP [+6]
UINT8 dummy2;
UINT32 dummy3;
UINT64 address; // Absolute destination address
} JCC_ABS;
#pragma pack(pop)
typedef struct _TRAMPOLINE
{
LPVOID pTarget; // [In] Address of the target function.
LPVOID pDetour; // [In] Address of the detour function.
LPVOID pTrampoline; // [In] Buffer address for the trampoline and relay function.
#if defined(_M_X64) || defined(__x86_64__)
LPVOID pRelay; // [Out] Address of the relay function.
#endif
BOOL patchAbove; // [Out] Should use the hot patch area?
UINT nIP; // [Out] Number of the instruction boundaries.
UINT8 oldIPs[8]; // [Out] Instruction boundaries of the target function.
UINT8 newIPs[8]; // [Out] Instruction boundaries of the trampoline function.
} TRAMPOLINE, *PTRAMPOLINE;
BOOL CreateTrampolineFunction(PTRAMPOLINE ct);

1
vnrhook/CMakeLists.txt
View File

@ -48,6 +48,7 @@ target_compile_options(vnrhook PRIVATE
set(vnrhook_libs
ntdll.lib
Version.lib
minhook
)
target_link_libraries(vnrhook ${vnrhook_libs})

65
vnrhook/engine/engine.cc
View File

@ -546,7 +546,7 @@ bool InsertKiriKiriHook() // 9/20/2014 jichi: change return type to bool
//RegisterEngineType(ENGINE_KIRIKIRI);
if (k1 && k2) {
ConsoleOutput("vnreng:KiriKiri1: disable GDI hooks");
DisableGDIHooks();
}
return k1 || k2;
}
@ -1324,7 +1324,7 @@ void NewKiriKiriZHook(DWORD addr)
NewHook(hp, "KiriKiriZ");
ConsoleOutput("vnreng:KiriKiriZ: disable GDI hooks");
DisableGDIHooks();
}
bool KiriKiriZHook1(DWORD esp_base, HookParam *)
@ -1998,7 +1998,7 @@ bool InsertBGI2Hook()
// Disable TextOutA, which is cached and hence missing characters.
ConsoleOutput("vnreng:BGI2: disable GDI hooks");
DisableGDIHooks();
return true;
}
@ -2177,7 +2177,7 @@ static bool InsertRealliveDynamicHook(LPVOID addr, DWORD frame, DWORD stack)
NewHook(hp, "RealLive");
//RegisterEngineType(ENGINE_REALLIVE);
ConsoleOutput("vnreng:RealLive: disable GDI hooks");
DisableGDIHooks();
return true;
}
}
@ -2299,7 +2299,7 @@ bool InsertSiglus3Hook()
NewHook(hp, "SiglusEngine3");
ConsoleOutput("vnreng:Siglus3: disable GDI hooks");
DisableGDIHooks();
return true;
}
@ -2450,7 +2450,7 @@ bool InsertSiglus4Hook()
NewHook(hp, "SiglusEngine4");
ConsoleOutput("vnreng:Siglus4: disable GDI hooks");
DisableGDIHooks();
return true;
}
@ -2640,7 +2640,7 @@ bool InsertSiglus4Hook()
NewHook(hp, "SiglusEngine4");
ConsoleOutput("vnreng:Siglus4: disable GDI hooks");
DisableGDIHooks();
return true;
}
#endif // 0
@ -4735,7 +4735,7 @@ static bool InsertSystem43OldHook(ULONG startAddress, ULONG stopAddress, LPCSTR
NewHook(hp, hookName);
ConsoleOutput("vnreng:System43: disable GDI hooks"); // disable hooking to TextOutA, which is cached
DisableGDIHooks();
return true;
}
@ -5473,7 +5473,7 @@ static bool InsertSystem43NewHook(ULONG startAddress, ULONG stopAddress, LPCSTR
NewHook(hp, hookName);
ConsoleOutput("vnreng:System43+: disable GDI hooks"); // disable hooking to TextOutA, which is cached
DisableGDIHooks();
return true;
}
@ -6635,7 +6635,7 @@ bool InsertMalieHook2() // jichi 8/20/2013: Change return type to boolean
NewHook(hp, "Malie");
//RegisterEngineType(ENGINE_MALIE);
ConsoleOutput("vnreng:Malie2: disable GDI hooks");
DisableGDIHooks();
return true;
}
@ -6964,7 +6964,7 @@ bool InsertMalie3Hook()
ConsoleOutput("vnreng: INSERT Malie3");
NewHook(hp, "Malie3");
ConsoleOutput("vnreng:Malie3: disable GDI hooks");
DisableGDIHooks();
return true;
}
@ -7042,7 +7042,7 @@ bool InsertMalieHook()
if (ok) {
ConsoleOutput("vnreng:Malie: disable GDI hooks");
DisableGDIHooks();
}
return ok;
}
@ -8077,7 +8077,7 @@ bool InsertApricoTHook()
//RegisterEngineType(ENGINE_APRICOT);
// jichi 2/14/2015: disable cached GDI functions
ConsoleOutput("vnreng:ApRicoT: disable GDI hooks");
DisableGDIHooks();
return true;
}
@ -8203,9 +8203,6 @@ bool InsertDebonosuScenarioHook()
hp.type = USING_STRING|NO_CONTEXT|USING_SPLIT|FIXING_SPLIT; // there is only one thread
ConsoleOutput("vnreng: INSERT Debonosu");
NewHook(hp, "Debonosu");
//RegisterEngineType(ENGINE_DEBONOSU);
ConsoleOutput("vnreng:Debonosu: disable GDI+ hooks");
DisableGDIPlusHooks();
return true;
}
}
@ -8439,7 +8436,7 @@ bool InsertSystemAoiDynamicHook(LPVOID addr, DWORD frame, DWORD stack)
else
NewHook(hp, "SystemAoi"); // jichi 7/8/2014: renamed, see: ja.wikipedia.org/wiki/ソフトハウスキャラ
ConsoleOutput("vnreng:SystemAoi: disable GDI hooks");
DisableGDIHooks();
} else
ConsoleOutput("vnreng: failed to detect SystemAoi");
//RegisterEngineType(ENGINE_SOFTHOUSE);
@ -8494,7 +8491,7 @@ bool InsertSystemAoiStatic(HMODULE hModule, bool wideChar) // attach scenario
else
NewHook(hp, "SystemAoiA");
ConsoleOutput("vnreng:SystemAoiStatic: disable GDI hooks");
DisableGDIHooks();
return true;
}
} // unnamed namespace
@ -9675,7 +9672,7 @@ static bool InsertGXP1Hook()
// jichi 5/13/2015: Disable hooking to GetGlyphOutlineW
// FIXME: GetGlyphOutlineW can extract name, but GXP cannot
ConsoleOutput("vnreng:GXP: disable GDI hooks");
DisableGDIHooks();
return true;
}
}
@ -9711,7 +9708,7 @@ static bool InsertGXP2Hook()
ConsoleOutput("vnreng: INSERT GXP2");
NewHook(hp, "GXP2");
ConsoleOutput("vnreng:GXP: disable GDI hooks");
DisableGDIHooks();
return true;
}
@ -9928,7 +9925,7 @@ bool InsertNextonHook()
NewHook(hp, "NEXTON");
//ConsoleOutput("vnreng:NEXTON: disable GDI hooks"); // There are no GDI functions hooked though
//DisableGDIHooks(); // disable GetGlyphOutlineA
// // disable GetGlyphOutlineA
return true;
}
@ -13415,7 +13412,7 @@ bool InsertExpHook()
NewHook(hp, "EXP"); // FIXME: text displayed line by line
ConsoleOutput("vnreng:EXP: disable GDI hooks"); // There are no GDI functions hooked though
DisableGDIHooks();
return true;
}
@ -13709,7 +13706,7 @@ bool Insert5pbHook1()
// GDI functions are not used by 5pb games anyway.
//ConsoleOutput("vnreng:5pb: disable GDI hooks");
//DisableGDIHooks();
//
return true;
}
@ -13760,7 +13757,7 @@ bool Insert5pbHook2()
// GDI functions are not used by 5pb games anyway.
//ConsoleOutput("vnreng:5pb: disable GDI hooks");
//DisableGDIHooks();
//
return true;
}
@ -13914,7 +13911,7 @@ bool Insert5pbHook3()
NewHook(hp, "5pb3");
// GDI functions are not used by 5pb games anyway.
//ConsoleOutput("vnreng:5pb: disable GDI hooks");
//DisableGDIHooks();
//
return true;
}
} // unnamed namespace
@ -14062,7 +14059,7 @@ static bool InsertMinkDynamicHook(LPVOID fun, DWORD frame, DWORD stack)
NewHook(hp, "Mink");
ConsoleOutput("vnreng:Mink: disable GDI hooks");
DisableGDIHooks();
return true;
}
#endif // 0
@ -14119,7 +14116,7 @@ bool InsertMinkHook()
NewHook(hp, "Mink");
//ConsoleOutput("vnreng:Mink: disable GDI hooks");
//DisableGDIHooks();
//
return true;
}
@ -14544,7 +14541,7 @@ bool InsertLeafHook()
NewHook(hp, "Leaf");
//ConsoleOutput("vnreng:Leaf: disable GDI hooks");
//DisableGDIHooks();
//
return true;
}
@ -14598,7 +14595,7 @@ bool InsertNekopackHook()
// Disable GDIHook(um.. ?), which is cached and hence missing characters.
//ConsoleOutput("vnreng:NekoPack: disable GDI hooks");
//DisableGDIHooks();
//
return true;
}
@ -14710,7 +14707,7 @@ bool InsertLunaSoftHook()
// There are no GDI functions anyway
//ConsoleOutput("vnreng:LunaSoft: disable GDI hooks");
//DisableGDIHooks();
//
return true;
}
@ -14853,7 +14850,7 @@ bool InsertFocasLensHook()
NewHook(hp, "FocasLens");
// GDI functions are kept in case the font is not cached
//DisableGDIHooks();
//
return true;
}
@ -15026,7 +15023,7 @@ bool InsertSyuntadaHook()
// TextOutA will produce repeated texts
ConsoleOutput("vnreng:Syuntada: disable GDI hooks");
DisableGDIHooks();
return true;
}
@ -15239,7 +15236,7 @@ bool InsertBootupGDIHook()
NewHook(hp, widechar ? "BootupW" : "BootupA");
ConsoleOutput("vnreng:BootupGDI: disable GDI hooks");
DisableGDIHooks();
return true;
}
bool InsertBootupLstrHook() // for character name
@ -16394,7 +16391,7 @@ bool InsertAdobeFlash10Hook()
NewHook(hp, "Adobe Flash 10");
ConsoleOutput("vnreng:AdobeFlash10: disable GDI hooks");
DisableGDIHooks();
return true;
}

18
vnrhook/engine/match.cc
View File

@ -22,14 +22,13 @@ enum { MAX_REL_ADDR = 0x200000 }; // jichi 8/18/2013: maximum relative address
// - Global variables -
DWORD processStartAddress, processStopAddress;
namespace Engine {
WCHAR *processName, // cached
processPath[MAX_PATH]; // cached
DWORD process_base,
process_limit;
//LPVOID trigger_addr;
trigger_fun_t trigger_fun_;
@ -85,7 +84,7 @@ bool DeterminePCEngine()
// PC games
PcHooks::hookGDIFunctions();
EnableGDIPlusHooks();
PcHooks::hookGDIPlusFunctions();
return false;
}
@ -866,8 +865,6 @@ bool DetermineEngineType()
seh_with_eh(ExceptHandler,
found = UnsafeDetermineEngineType());
#endif // ITH_HAS_SEH
if (::GDIPlusHooksEnabled())
PcHooks::hookGDIPlusFunctions();
if (!found) { // jichi 10/2/2013: Only enable it if no game engine is detected
PcHooks::hookLstrFunctions();
PcHooks::hookCharNextFunctions();
@ -891,6 +888,15 @@ void Hijack()
GetModuleFileNameW(nullptr, processPath, MAX_PATH);
processName = wcsrchr(processPath, L'\\') + 1;
::processStartAddress = ::processStopAddress = (DWORD)GetModuleHandleW(nullptr);
MEMORY_BASIC_INFORMATION info;
do
{
VirtualQuery((void*)::processStopAddress, &info, sizeof(info));
::processStopAddress = (DWORD)info.BaseAddress + info.RegionSize;
} while (info.Protect > PAGE_NOACCESS);
processStopAddress -= info.RegionSize;
DetermineEngineType();
hijacked = true;
}

2
vnrhook/engine/pchooks.cc
View File

@ -123,7 +123,7 @@ void PcHooks::hookGDIPlusFunctions()
{
HMODULE hModule = ::GetModuleHandleA("gdiplus.dll");
if (!hModule) {
ConsoleOutput("not loaded");
ConsoleOutput("gdi+: not loaded");
return;
}

686
vnrhook/hijack/texthook.cc
View File

@ -10,218 +10,92 @@
#endif // _MSC_VER
#include "hijack/texthook.h"
#include "MinHook.h"
#include "engine/match.h"
#include "except.h"
#include "main.h"
#include "pipe.h"
#include "const.h"
#include "ithsys/ithsys.h"
#include "disasm/disasm.h"
#include "growl.h"
//#include "winseh/winseh.h"
#include <Psapi.h>
//#define ConsoleOutput(...) (void)0 // jichi 9/17/2013: I don't need this ><
// - Global variables -
// 10/14/2014 jichi: disable GDI hooks
static bool gdi_hook_enabled_ = true; // enable GDI by default
static bool gdiplus_hook_enabled_ = false; // disable GDIPlus by default
bool GDIHooksEnabled() { return ::gdi_hook_enabled_; }
bool GDIPlusHooksEnabled() { return ::gdiplus_hook_enabled_; }
void EnableGDIHooks() { ::gdi_hook_enabled_ = true; }
void EnableGDIPlusHooks() { ::gdiplus_hook_enabled_ = true; }
void DisableGDIHooks() { ::gdi_hook_enabled_ = false; }
void DisableGDIPlusHooks() { ::gdiplus_hook_enabled_ = false; }
//FilterRange filter[8];
DWORD flag,
enter_count;
TextHook *hookman,
*current_available;
TextHook *hookman;
// - Unnamed helpers -
#ifndef _WIN64
namespace { // unnamed
//provide const time hook entry.
int userhook_count;
const BYTE common_hook[] = {
0x9c, // pushfd
0x60, // pushad
0x9c, // pushfd
0x8d,0x54,0x24,0x28, // lea edx,[esp+0x28] ; esp value
0x8b,0x32, // mov esi,[edx] ; return address
0xb9, 0,0,0,0, // mov ecx, $ ; pointer to TextHook
0xe8, 0,0,0,0, // call @hook
0x9d, // popfd
0x61, // popad
0x9d // popfd
};
const BYTE common_hook[] = {
0x9c, // pushfd
0x60, // pushad
0x9c, // pushfd
0x8d,0x54,0x24,0x28, // lea edx,[esp+0x28] ; esp value
0x8b,0x32, // mov esi,[edx] ; return address
0xb9, 0,0,0,0, // mov ecx, $ ; pointer to TextHook
0xe8, 0,0,0,0, // call @hook
0x9d, // popfd
0x61, // popad
0x9d, // popfd
0xe9 // jmp @original
};
/**
* jichi 7/19/2014
*
* @param original_addr
* @param new_addr
* @param hook_len
* @param original_len
* @return -1 if failed, else 0 if ?, else ?
*/
int MapInstruction(DWORD original_addr, DWORD new_addr, BYTE &hook_len, BYTE &original_len)
{
int flag = 0;
DWORD l = 0;
const BYTE *r = (const BYTE *)original_addr; // 7/19/2014 jichi: original address is not modified
BYTE *c = (BYTE *)new_addr; // 7/19/2014 jichi: but new address might be modified
while((r - (BYTE *) original_addr) < 5) {
l = ::disasm(r);
if (l == 0) {
ConsoleOutput("vnrcli:MapInstruction: FAILED: failed to disasm");
return -1;
}
DWORD Hash(std::wstring module)
{
DWORD hash = 0;
for (auto i : module) hash = _rotr(hash, 7) + i;
return hash;
}
::memcpy(c, r, l);
if (*r >= 0x70 && *r < 0x80) {
c[0] = 0xf;
c[1] = *r + 0x10;
c += 6;
__asm
{
mov eax,r
add eax,2
movsx edx,byte ptr [eax-1]
add edx,eax
mov eax,c
sub edx,eax
mov [eax-4],edx
}
} else if (*r == 0xeb) {
c[0] = 0xe9;
c += 5;
__asm
{
mov eax,r
add eax,2
movsx edx,[eax-1]
add edx,eax
mov eax,c
sub edx,eax
mov [eax-4],edx
}
if (r - (BYTE *)original_addr < 5 - l) {
ConsoleOutput("vnrcli:MapInstruction: not safe to move instruction right after short jmp");
return -1; // Not safe to move instruction right after short jmp.
} else
flag = 1;
} else if (*r == 0xe8 || *r == 0xe9) {
c[0]=*r;
c += 5;
flag = (*r == 0xe9);
__asm
{
mov eax,r
add eax,5
mov edx,[eax-4]
add edx,eax
mov eax,c
sub edx,eax
mov [eax-4],edx
}
} else if (*r == 0xf && (*(r + 1) >> 4) == 0x8) {
c += 6;
__asm
{
mov eax,r
mov edx,dword ptr [eax+2]
add eax,6
add eax,edx
mov edx,c
sub eax,edx
mov [edx-4],eax
}
}
else
c += l;
r += l;
}
original_len = r - (BYTE *)original_addr;
hook_len = c - (BYTE *)new_addr;
return flag;
}
//copy original instruction
//jmp back
DWORD GetModuleBase(DWORD hash)
{
HMODULE allModules[1000];
DWORD size;
EnumProcessModules(GetCurrentProcess(), allModules, sizeof(allModules), &size);
wchar_t name[MAX_PATH];
for (int i = 0; i < size / sizeof(HMODULE); ++i)
{
GetModuleFileNameW(allModules[i], name, MAX_PATH);
_wcslwr(name);
if (Hash(wcsrchr(name, L'\\') + 1) == hash) return (DWORD)allModules[i];
}
return 0;
}
//copy original instruction
//jmp back
DWORD GetModuleBase(DWORD hash)
{
__asm
{
mov eax,fs:[0x30]
mov eax,[eax+0xc]
mov esi,[eax+0x14]
mov edi,_wcslwr
listfind:
mov edx,[esi+0x28]
test edx,edx
jz notfound
push edx
call edi
pop edx
xor eax,eax
calc:
movzx ecx, word ptr [edx]
test cl,cl
jz fin
ror eax,7
add eax,ecx
add edx,2
jmp calc
fin:
cmp eax,[hash]
je found
mov esi,[esi]
jmp listfind
notfound:
xor eax,eax
jmp termin
found:
mov eax,[esi+0x10]
termin:
}
}
__declspec(naked) // jichi 10/2/2013: No prolog and epilog
int ProcessHook(DWORD dwDataBase, DWORD dwRetn, TextHook *hook) // Use SEH to ensure normal execution even bad hook inserted.
{
// jichi 12/17/2013: The function parameters here are meaning leass. The parameters are in esi and edi
__asm
{
push esi
push edx
call TextHook::Send
retn // jichi 12/13/2013: return near, see: http://stackoverflow.com/questions/1396909/ret-retn-retf-how-to-use-them
}
}
__declspec(naked) // jichi 10/2/2013: No prolog and epilog
int ProcessHook(DWORD dwDataBase, DWORD dwRetn, TextHook *hook) // Use SEH to ensure normal execution even bad hook inserted.
{
// jichi 12/17/2013: The function parameters here are meaning leass. The parameters are in esi and edi
__asm
{
push esi
push edx
call TextHook::Send
retn // jichi 12/13/2013: return near, see: http://stackoverflow.com/questions/1396909/ret-retn-retf-how-to-use-them
}
}
} // unnamed namespace
#endif // _WIN32
// - TextHook methods -
int TextHook::InsertHook()
bool TextHook::InsertHook()
{
int ok = 1;
//ConsoleOutput("vnrcli:InsertHook: enter");
WaitForSingleObject(hmMutex, 0);
if (hp.type & DIRECT_READ) ok = InsertReadCode();
bool ret = false;
//ConsoleOutput("vnrcli:InsertHook: enter");
WaitForSingleObject(hmMutex, 0);
if (hp.type & DIRECT_READ) ret = InsertReadCode();
#ifndef _WIN64
else ok = InsertHookCode();
else ret = InsertHookCode();
#endif
ReleaseMutex(hmMutex);
//ConsoleOutput("vnrcli:InsertHook: leave");
return ok;
ReleaseMutex(hmMutex);
//ConsoleOutput("vnrcli:InsertHook: leave");
return ret;
}
#ifndef _WIN64
@ -234,211 +108,136 @@ int TextHook::InsertHook()
// - dwRetn: the return address of the hook
DWORD TextHook::Send(DWORD dwDataBase, DWORD dwRetn)
{
DWORD ret = 0;
ITH_WITH_SEH(ret = UnsafeSend(dwDataBase, dwRetn));
return ret;
DWORD ret = 0;
ITH_WITH_SEH(ret = UnsafeSend(dwDataBase, dwRetn));
return ret;
}
DWORD TextHook::UnsafeSend(DWORD dwDataBase, DWORD dwRetn)
{
DWORD dwCount,
dwAddr,
dwDataIn,
dwSplit;
BYTE pbData[PIPE_BUFFER_SIZE];
DWORD dwType = hp.type;
DWORD dwCount,
dwAddr,
dwDataIn,
dwSplit;
BYTE pbData[PIPE_BUFFER_SIZE];
DWORD dwType = hp.type;
dwAddr = hp.address;
dwAddr = hp.address;
/** jichi 12/24/2014
* @param addr function address
* @param frame real address of the function, supposed to be the same as addr
* @param stack address of current stack - 4
* @return If success, which is reverted
*/
if (::trigger)
::trigger = Engine::InsertDynamicHook((LPVOID)dwAddr, *(DWORD *)(dwDataBase - 0x1c), *(DWORD *)(dwDataBase-0x18));
/** jichi 12/24/2014
* @param addr function address
* @param frame real address of the function, supposed to be the same as addr
* @param stack address of current stack - 4
* @return If success, which is reverted
*/
if (::trigger)
::trigger = Engine::InsertDynamicHook((LPVOID)dwAddr, *(DWORD *)(dwDataBase - 0x1c), *(DWORD *)(dwDataBase - 0x18));
// jichi 10/24/2014: generic hook function
if (hp.hook_fun && !hp.hook_fun(dwDataBase, &hp))
hp.hook_fun = nullptr;
// jichi 10/24/2014: generic hook function
if (hp.hook_fun && !hp.hook_fun(dwDataBase, &hp))
hp.hook_fun = nullptr;
if (dwType & HOOK_EMPTY) // jichi 10/24/2014: dummy hook only for dynamic hook
return 0;
if (dwType & HOOK_EMPTY) // jichi 10/24/2014: dummy hook only for dynamic hook
return 0;
dwCount = 0;
dwSplit = 0;
dwDataIn = *(DWORD *)(dwDataBase + hp.offset); // default value
dwCount = 0;
dwSplit = 0;
dwDataIn = *(DWORD *)(dwDataBase + hp.offset); // default value
if (hp.text_fun) {
hp.text_fun(dwDataBase, &hp, 0, &dwDataIn, &dwSplit, &dwCount);
} else {
if (dwDataIn == 0)
return 0;
if (dwType & FIXING_SPLIT)
dwSplit = FIXED_SPLIT_VALUE; // fuse all threads, and prevent floating
else if (dwType & USING_SPLIT) {
dwSplit = *(DWORD *)(dwDataBase + hp.split);
if (dwType & SPLIT_INDIRECT) {
if (IthGetMemoryRange((LPVOID)(dwSplit + hp.split_index), 0, 0))
dwSplit = *(DWORD *)(dwSplit + hp.split_index);
else
return 0;
}
}
if (dwType & DATA_INDIRECT) {
if (IthGetMemoryRange((LPVOID)(dwDataIn + hp.index), 0, 0))
dwDataIn = *(DWORD *)(dwDataIn + hp.index);
else
return 0;
}
dwCount = GetLength(dwDataBase, dwDataIn);
}
// jichi 12/25/2013: validate data size
if (dwCount == 0 || dwCount > PIPE_BUFFER_SIZE - sizeof(ThreadParam))
return 0;
if (hp.text_fun) {
hp.text_fun(dwDataBase, &hp, 0, &dwDataIn, &dwSplit, &dwCount);
}
else {
if (dwDataIn == 0)
return 0;
if (dwType & FIXING_SPLIT)
dwSplit = FIXED_SPLIT_VALUE; // fuse all threads, and prevent floating
else if (dwType & USING_SPLIT) {
dwSplit = *(DWORD *)(dwDataBase + hp.split);
if (dwType & SPLIT_INDIRECT) {
if (IthGetMemoryRange((LPVOID)(dwSplit + hp.split_index), 0, 0))
dwSplit = *(DWORD *)(dwSplit + hp.split_index);
else
return 0;
}
}
if (dwType & DATA_INDIRECT) {
if (IthGetMemoryRange((LPVOID)(dwDataIn + hp.index), 0, 0))
dwDataIn = *(DWORD *)(dwDataIn + hp.index);
else
return 0;
}
dwCount = GetLength(dwDataBase, dwDataIn);
}
// jichi 12/25/2013: validate data size
if (dwCount == 0 || dwCount > PIPE_BUFFER_SIZE - sizeof(ThreadParam))
return 0;
if (hp.length_offset == 1) {
dwDataIn &= 0xffff;
if ((dwType & BIG_ENDIAN) && (dwDataIn >> 8))
dwDataIn = _byteswap_ushort(dwDataIn & 0xffff);
if (dwCount == 1)
dwDataIn &= 0xff;
*(WORD *)(pbData + sizeof(ThreadParam)) = dwDataIn & 0xffff;
}
else
::memcpy(pbData + sizeof(ThreadParam), (void *)dwDataIn, dwCount);
if (hp.length_offset == 1) {
dwDataIn &= 0xffff;
if ((dwType & BIG_ENDIAN) && (dwDataIn >> 8))
dwDataIn = _byteswap_ushort(dwDataIn & 0xffff);
if (dwCount == 1)
dwDataIn &= 0xff;
*(WORD *)(pbData + sizeof(ThreadParam)) = dwDataIn & 0xffff;
}
else
::memcpy(pbData + sizeof(ThreadParam), (void *)dwDataIn, dwCount);
// jichi 10/14/2014: Add filter function
if (hp.filter_fun && !hp.filter_fun(pbData + sizeof(ThreadParam), &dwCount, &hp, 0) || dwCount <= 0) {
return 0;
}
// jichi 10/14/2014: Add filter function
if (hp.filter_fun && !hp.filter_fun(pbData + sizeof(ThreadParam), &dwCount, &hp, 0) || dwCount <= 0) {
return 0;
}
if (dwType & (NO_CONTEXT|FIXING_SPLIT))
dwRetn = 0;
if (dwType & (NO_CONTEXT | FIXING_SPLIT))
dwRetn = 0;
*(ThreadParam*)pbData = { GetCurrentProcessId(), dwAddr, dwRetn, dwSplit };
if (dwCount) {
if (dwCount) {
DWORD unused;
//CliLockPipe();
WriteFile(::hookPipe, pbData, dwCount + sizeof(ThreadParam), &unused, nullptr);
//CliUnlockPipe();
}
return 0;
//CliLockPipe();
WriteFile(::hookPipe, pbData, dwCount + sizeof(ThreadParam), &unused, nullptr);
//CliUnlockPipe();
}
return 0;
}
int TextHook::InsertHookCode()
bool TextHook::InsertHookCode()
{
DWORD ret = no;
// jichi 9/17/2013: might raise 0xC0000005 AccessViolationException on win7
ITH_WITH_SEH(ret = UnsafeInsertHookCode());
//if (ret == no)
// ITH_WARN(L"Failed to insert hook");
return ret;
bool ret = false;
// jichi 9/17/2013: might raise 0xC0000005 AccessViolationException on win7
__try { ret = UnsafeInsertHookCode(); }
__except (1) {};
return ret;
}
int TextHook::UnsafeInsertHookCode()
bool TextHook::UnsafeInsertHookCode()
{
//ConsoleOutput("vnrcli:UnsafeInsertHookCode: enter");
if (hp.module && (hp.type & MODULE_OFFSET)) { // Map hook offset to real address.
if (DWORD base = GetModuleBase(hp.module)) {
hp.address += base;
}
else {
currentHook--;
ConsoleOutput("vnrcli:UnsafeInsertHookCode: FAILED: module not present");
return no;
}
hp.type &= ~MODULE_OFFSET;
}
if (hp.module && (hp.type & MODULE_OFFSET)) // Map hook offset to real address.
{
if (DWORD base = GetModuleBase(hp.module)) hp.address += base;
else return ConsoleOutput("NextHooker: UnsafeInsertHookCode: FAILED: module not present"), false;
hp.type &= ~MODULE_OFFSET;
}
BYTE* original;
if (MH_CreateHook((void*)hp.address, (void*)trampoline, (void**)&original) != MH_OK) return false;
{
TextHook *it = hookman;
for (int i = 0; (i < currentHook) && it; it++) { // Check if there is a collision.
if (it->Address())
i++;
//it = hookman + i;
if (it == this)
continue;
if (it->Address() <= hp.address &&
it->Address() + it->Length() > hp.address) {
it->ClearHook();
break;
}
}
}
void* thisPtr = (void*)this;
void* funcPtr = (void*)((BYTE*)ProcessHook - (BYTE*)(trampoline + 19));
DWORD dist = original - (trampoline + sizeof(common_hook)) - 4;
// Verify hp.address.
if (!IthGetMemoryRange((LPCVOID)hp.address, nullptr, nullptr))
{
ConsoleOutput("NextHooker: FAILED: cannot access requested memory");
return no;
}
memcpy(trampoline, common_hook, sizeof(common_hook));
memcpy(trampoline + 10, &thisPtr, sizeof(void*));
memcpy(trampoline + 15, &funcPtr, sizeof(void*));
memcpy(trampoline + sizeof(common_hook), &dist, sizeof(dist));
memcpy(recover, common_hook, sizeof(common_hook));
void* thisPtr = (void*)this;
void* funcPtr = (void*)((BYTE*)ProcessHook - (BYTE*)(recover + 19));
memcpy(recover + 10, &thisPtr, sizeof(void*));
memcpy(recover + 15, &funcPtr, sizeof(void*));
BYTE *c = (BYTE *)hp.address,
*r = recover;
BYTE inst[] = // jichi 9/27/2013: Why 8? Only 5 bytes will be written using NtWriteVirtualMemory
{
0xe9, 0, 0, 0, 0, // jmp recover
0xcc, 0xcc, 0xcc // int3
};
void* relRecover = (void*)(recover - (BYTE*)hp.address - 5);
memcpy(inst + 1, &relRecover, sizeof(void*));
r += sizeof(common_hook);
hp.hook_len = 5;
int address = hp.address;
switch (MapInstruction(hp.address, (DWORD)r, hp.hook_len, hp.recover_len)) {
case -1:
ConsoleOutput("vnrcli:UnsafeInsertHookCode: FAILED: failed to map instruction");
return no;
case 0:
__asm
{
mov ecx,this
movzx eax,[ecx]hp.hook_len
movzx edx,[ecx]hp.recover_len
add edx,address
add eax,r
add eax,5
sub edx,eax
mov [eax-5],0xe9 // jichi 9/27/2013: 0xe9 is jump
mov [eax-4],edx
}
}
// jichi 9/27/2013: Save the original instructions in the memory
memcpy(original, (LPVOID)hp.address, hp.recover_len);
//Check if the new hook range conflict with existing ones. Clear older if conflict.
{
TextHook *it = hookman;
for (int i = 0; i < currentHook; it++) {
if (it->Address())
i++;
if (it == this)
continue;
if (it->Address() >= hp.address &&
it->Address() < hp.hook_len + hp.address) {
it->ClearHook();
break;
}
}
}
if (MH_EnableHook((void*)hp.address) != MH_OK) return false;
DWORD old;
LPVOID addr = (void*)hp.address;
VirtualProtect(addr, sizeof(inst), PAGE_EXECUTE_READWRITE, &old);
memcpy(addr, inst, hp.recover_len);
FlushInstructionCache(GetCurrentProcess(), addr, hp.recover_len);
return 0;
return true;
}
#endif // _WIN32
@ -478,132 +277,97 @@ DWORD WINAPI ReaderThread(LPVOID threadParam)
return 0;
}
int TextHook::InsertReadCode()
bool TextHook::InsertReadCode()
{
hp.hook_len = 0x40;
//Check if the new hook range conflict with existing ones. Clear older if conflict.
TextHook *it = hookman;
for (int i = 0; i < currentHook; it++) {
if (it->Address())
i++;
if (it == this)
continue;
if ((it->Address() >= hp.address && it->Address() < hp.hook_len + hp.address) || (it->Address() <= hp.address && it->Address() + it->Length() > hp.address))
it->ClearHook();
}
RemoveHook(hp.address); // Artikash 8/25/2018: clear existing
if (!IthGetMemoryRange((LPCVOID)hp.address, 0, 0))
{
ConsoleOutput("cannot access read address");
return no;
ConsoleOutput("NextHooker:InsertReadCode failed: cannot access read address");
return false;
}
hp.readerHandle = CreateThread(nullptr, 0, ReaderThread, this, 0, nullptr);
return yes;
return true;
}
int TextHook::InitHook(const HookParam &h, LPCSTR name, WORD set_flag)
void TextHook::InitHook(const HookParam &h, LPCSTR name, WORD set_flag)
{
WaitForSingleObject(hmMutex, 0);
hp = h;
hp.type |= set_flag;
if (name && name != hook_name) {
SetHookName(name);
}
currentHook++;
current_available = this+1;
while (current_available->Address())
current_available++;
ReleaseMutex(hmMutex);
return 1;
WaitForSingleObject(hmMutex, 0);
hp = h;
hp.type |= set_flag;
if (name && name != hook_name) SetHookName(name);
ReleaseMutex(hmMutex);
}
int TextHook::RemoveHookCode()
void TextHook::RemoveHookCode()
{
if (!hp.address)
return no;
DWORD l = hp.hook_len;
memcpy((void*)hp.address, original, hp.recover_len);
FlushInstructionCache(GetCurrentProcess(), (void*)hp.address, hp.recover_len);
return yes;
MH_DisableHook((void*)hp.address);
}
int TextHook::RemoveReadCode()
void TextHook::RemoveReadCode()
{
if (!hp.address) return no;
TerminateThread(hp.readerHandle, 0);
CloseHandle(hp.readerHandle);
return yes;
}
int TextHook::ClearHook()
void TextHook::ClearHook()
{
int err;
WaitForSingleObject(hmMutex, 0);
ConsoleOutput("vnrcli:RemoveHook: enter");
if (hp.type & DIRECT_READ) err = RemoveReadCode();
else err = RemoveHookCode();
NotifyHookRemove(hp.address);
if (hook_name) {
delete[] hook_name;
hook_name = nullptr;
}
memset(this, 0, sizeof(TextHook)); // jichi 11/30/2013: This is the original code of ITH
//if (current_available>this)
// current_available = this;
currentHook--;
ConsoleOutput("vnrcli:RemoveHook: leave");
ReleaseMutex(hmMutex);
return err;
WaitForSingleObject(hmMutex, 0);
ConsoleOutput("NextHooker:RemoveHook: enter");
if (hp.type & DIRECT_READ) RemoveReadCode();
else RemoveHookCode();
NotifyHookRemove(hp.address);
if (hook_name) delete[] hook_name;
memset(this, 0, sizeof(TextHook)); // jichi 11/30/2013: This is the original code of ITH
//if (current_available>this)
// current_available = this;
currentHook--;
ConsoleOutput("NextHooker:RemoveHook: leave");
ReleaseMutex(hmMutex);
}
int TextHook::SetHookName(LPCSTR name)
void TextHook::SetHookName(LPCSTR name)
{
name_length = strlen(name) + 1;
if (hook_name)
delete[] hook_name;
hook_name = new char[name_length];
//ITH_MEMSET_HEAP(hook_name, 0, sizeof(wchar_t) * name_length); // jichi 9/26/2013: zero memory
strcpy(hook_name, name);
return 0;
name_length = strlen(name) + 1;
if (hook_name) delete[] hook_name;
hook_name = new char[name_length];
strcpy(hook_name, name);
}
int TextHook::GetLength(DWORD base, DWORD in)
{
if (base == 0)
return 0;
int len;
switch (hp.length_offset) {
default: // jichi 12/26/2013: I should not put this default branch to the end
len = *((int *)base + hp.length_offset);
if (len >= 0) {
if (hp.type & USING_UNICODE)
len <<= 1;
break;
}
else if (len != -1)
break;
//len == -1 then continue to case 0.
case 0:
if (hp.type & USING_UNICODE)
len = wcslen((const wchar_t *)in) << 1;
else
len = strlen((const char *)in);
break;
case 1:
if (hp.type & USING_UNICODE)
len = 2;
else {
if (hp.type & BIG_ENDIAN)
in >>= 8;
len = LeadByteTable[in & 0xff]; //Slightly faster than IsDBCSLeadByte
}
break;
}
// jichi 12/25/2013: This function originally return -1 if failed
//return len;
return max(0, len);
if (base == 0)
return 0;
int len;
switch (hp.length_offset) {
default: // jichi 12/26/2013: I should not put this default branch to the end
len = *((int *)base + hp.length_offset);
if (len >= 0) {
if (hp.type & USING_UNICODE)
len <<= 1;
break;
}
else if (len != -1)
break;
//len == -1 then continue to case 0.
case 0:
if (hp.type & USING_UNICODE)
len = wcslen((const wchar_t *)in) << 1;
else
len = strlen((const char *)in);
break;
case 1:
if (hp.type & USING_UNICODE)
len = 2;
else {
if (hp.type & BIG_ENDIAN)
in >>= 8;
len = LeadByteTable[in & 0xff]; //Slightly faster than IsDBCSLeadByte
}
break;
}
// jichi 12/25/2013: This function originally return -1 if failed
//return len;
return max(0, len);
}
// EOF

42
vnrhook/hijack/texthook.h
View File

@ -18,47 +18,33 @@ extern DWORD trigger;
class TextHook
{
int InsertHookCode();
int InsertReadCode();
int UnsafeInsertHookCode();
bool InsertHookCode();
bool InsertReadCode();
bool UnsafeInsertHookCode();
DWORD UnsafeSend(DWORD dwDataBase, DWORD dwRetn);
int RemoveHookCode();
int RemoveReadCode();
int SetHookName(LPCSTR name);
void RemoveHookCode();
void RemoveReadCode();
void SetHookName(LPCSTR name);
public:
HookParam hp;
LPSTR hook_name;
int name_length;
BYTE recover[0x68 - sizeof(HookParam)];
BYTE original[0x10];
BYTE trampoline[80];
unsigned __int64 Address() const { return hp.address; }
DWORD Type() const { return hp.type; }
WORD Length() const { return hp.hook_len; }
LPSTR Name() const { return hook_name; }
int NameLength() const { return name_length; }
int InsertHook();
int InitHook(const HookParam &hp, LPCSTR name = 0, WORD set_flag = 0);
bool InsertHook();
void InitHook(const HookParam &hp, LPCSTR name = 0, WORD set_flag = 0);
DWORD Send(DWORD dwDataBase, DWORD dwRetn);
int ClearHook();
void ClearHook();
int GetLength(DWORD base, DWORD in); // jichi 12/25/2013: Return 0 if failed
};
// jichi 1/16/2015: Though called max hook, it means max number of text threads
enum { MAX_HOOK = 64 };
enum { MAX_HOOK = 300 };
enum { HOOK_SECTION_SIZE = MAX_HOOK * sizeof(TextHook) * 2, HOOK_BUFFER_SIZE = MAX_HOOK * sizeof(TextHook) };
extern TextHook *hookman,
*current_available;
extern TextHook *hookman;
extern bool running,
live;
extern bool running;
extern HANDLE hookPipe,
hmMutex;
DWORD WINAPI PipeManager(LPVOID unused);
enum : int { yes = 0, no = 1 };
extern HANDLE hookPipe, hmMutex;
// EOF

77
vnrhook/main.cc
View File

@ -10,29 +10,18 @@
#include "main.h"
#include "defs.h"
#include "MinHook.h"
#include "pipe.h"
#include "engine/engine.h"
#include "engine/match.h"
#include "hijack/texthook.h"
#include "util/growl.h"
// Global variables
// jichi 6/3/2014: memory range of the current module
DWORD processStartAddress,
processStopAddress;
WCHAR hm_section[0x100];
HANDLE hSection;
bool running;
int currentHook = 0,
user_hook_count = 0;
int currentHook = 0, userhookCount = 0;
DWORD trigger = 0;
HANDLE
hFile,
hMutex,
hmMutex;
void CreatePipe();
HANDLE hmMutex;
BOOL WINAPI DllMain(HINSTANCE hModule, DWORD fdwReason, LPVOID unused)
{
@ -47,19 +36,11 @@ BOOL WINAPI DllMain(HINSTANCE hModule, DWORD fdwReason, LPVOID unused)
// jichi 9/25/2013: Interprocedural communication with vnrsrv.
hSection = CreateFileMappingW(INVALID_HANDLE_VALUE, nullptr, PAGE_EXECUTE_READWRITE, 0, HOOK_SECTION_SIZE, (ITH_SECTION_ + std::to_wstring(GetCurrentProcessId())).c_str());
::hookman = (TextHook*)MapViewOfFile(hSection, FILE_MAP_ALL_ACCESS | FILE_MAP_EXECUTE, 0, 0, HOOK_BUFFER_SIZE);
memset(::hookman, 0, HOOK_BUFFER_SIZE);
::processStartAddress = ::processStopAddress = (DWORD)GetModuleHandleW(nullptr);
MEMORY_BASIC_INFORMATION info;
do
{
VirtualQuery((void*)::processStopAddress, &info, sizeof(info));
::processStopAddress = (DWORD)info.BaseAddress + info.RegionSize;
} while (info.Protect > PAGE_NOACCESS);
processStopAddress -= info.RegionSize;
MH_Initialize();
::running = true;
::current_available = ::hookman;
CreatePipe();
}
@ -67,14 +48,13 @@ BOOL WINAPI DllMain(HINSTANCE hModule, DWORD fdwReason, LPVOID unused)
case DLL_PROCESS_DETACH:
{
::running = false;
for (TextHook *man = ::hookman; man < ::hookman + MAX_HOOK; man++) if (man->Address()) man->ClearHook();
MH_Uninitialize();
for (TextHook *man = ::hookman; man < ::hookman + MAX_HOOK; man++) if (man->hp.address) man->ClearHook();
//if (ith_has_section)
UnmapViewOfFile(::hookman);
CloseHandle(::hookPipe);
CloseHandle(hSection);
CloseHandle(hMutex);
CloseHandle(hmMutex);
//} ITH_EXCEPT {}
}
@ -84,47 +64,32 @@ BOOL WINAPI DllMain(HINSTANCE hModule, DWORD fdwReason, LPVOID unused)
}
//extern "C" {
DWORD NewHook(const HookParam &hp, LPCSTR lpname, DWORD flag)
void NewHook(const HookParam &hp, LPCSTR lpname, DWORD flag)
{
std::string name = lpname;
int current = ::current_available - ::hookman;
if (current < MAX_HOOK) {
//flag &= 0xffff;
//if ((flag & HOOK_AUXILIARY) == 0)
flag |= HOOK_ADDITIONAL;
if (name[0] == '\0')
{
name = "UserHook" + std::to_string(user_hook_count++);
}
ConsoleOutput(("vnrcli:NewHook: try inserting hook: " + name).c_str());
if (++currentHook < MAX_HOOK)
{
if (name[0] == '\0') name = "UserHook" + std::to_string(userhookCount++);
ConsoleOutput(("NextHooker: try inserting hook: " + name).c_str());
// jichi 7/13/2014: This function would raise when too many hooks added
::hookman[current].InitHook(hp, name.c_str(), flag & 0xffff);
if (::hookman[current].InsertHook() == 0) {
ConsoleOutput(("vnrcli:NewHook: inserted hook: " + name).c_str());
NotifyHookInsert(hp, name.c_str());
}
else
ConsoleOutput("vnrcli:NewHook:WARNING: failed to insert hook");
::hookman[currentHook].InitHook(hp, name.c_str(), flag);
if (::hookman[currentHook].InsertHook()) ConsoleOutput(("NextHooker: inserted hook: " + name).c_str());
else ConsoleOutput("NextHooker:WARNING: failed to insert hook");
}
return 0;
else ConsoleOutput("NextHooker: too many hooks: can't insert");
}
DWORD RemoveHook(unsigned __int64 addr)
void RemoveHook(unsigned __int64 addr)
{
for (int i = 0; i < MAX_HOOK; i++)
if (::hookman[i].Address() == addr) {
if (abs((long long)(::hookman[i].hp.address - addr)) < 9)
::hookman[i].ClearHook();
return 0;
}
return 0;
}
DWORD SwitchTrigger(DWORD t)
void SwitchTrigger(DWORD t)
{
trigger = t;
return 0;
}
// EOF

18
vnrhook/main.h
View File

@ -6,20 +6,10 @@
#include "common.h"
#include "types.h"
#include "pipe.h"
void ConsoleOutput(LPCSTR text); // jichi 12/25/2013: Used to return length of sent text
void NotifyHookInsert(HookParam hp, LPCSTR name);
void NotifyHookRemove(unsigned __int64 addr);
DWORD NewHook(const HookParam &hp, LPCSTR name, DWORD flag = HOOK_ENGINE);
DWORD RemoveHook(unsigned __int64 addr);
DWORD SwitchTrigger(DWORD on);
// 10/14/2014 jichi: disable GDI hooks
void EnableGDIHooks();
void EnableGDIPlusHooks();
void DisableGDIHooks();
void DisableGDIPlusHooks();
bool GDIHooksEnabled();
bool GDIPlusHooksEnabled();
void NewHook(const HookParam &hp, LPCSTR name, DWORD flag = HOOK_ENGINE);
void RemoveHook(unsigned __int64 addr);
void SwitchTrigger(DWORD on);
// EOF

20
vnrhook/pipe.cc
View File

@ -7,7 +7,7 @@
# pragma warning (disable:4100) // C4100: unreference formal parameter
#endif // _MSC_VER
#include "types.h"
#include "pipe.h"
#include "main.h"
#include "hijack/texthook.h"
#include "engine/match.h"
@ -52,7 +52,7 @@ void CreatePipe()
ReleaseMutex(pipeAcquisitionMutex);
CloseHandle(pipeAcquisitionMutex);
ConsoleOutput("vnrcli:WaitForPipe: pipe connected");
ConsoleOutput("NextHooker: pipe connected");
#ifdef _WIN64
ConsoleOutput("Hooks don't work on x64, only read codes work. Engine disabled.");
#else
@ -71,9 +71,7 @@ void CreatePipe()
case HOST_COMMAND_REMOVE_HOOK:
{
auto info = *(RemoveHookCmd*)buffer;
for (int i = 0; i < MAX_HOOK; ++i)
if (::hookman[i].Address() == info.address)
::hookman[i].ClearHook();
RemoveHook(info.address);
}
break;
case HOST_COMMAND_DETACH:
@ -96,18 +94,6 @@ void ConsoleOutput(LPCSTR text)
WriteFile(::hookPipe, &info, strlen(text) + sizeof(info), DUMMY, nullptr);
}
void NotifyHookInsert(HookParam hp, LPCSTR name)
{
//BYTE buffer[PIPE_BUFFER_SIZE];
//*(DWORD*)buffer = HOST_NOTIFICATION;
//*(DWORD*)(buffer + sizeof(DWORD)) = HOST_NOTIFICATION_NEWHOOK;
//*(HookParam*)(buffer + sizeof(DWORD) * 2) = hp;
//strcpy((char*)buffer + sizeof(DWORD) * 2 + sizeof(HookParam), name);
//DWORD unused;
//WriteFile(::hookPipe, buffer, strlen(name) + sizeof(DWORD) * 2 + sizeof(HookParam), &unused, nullptr);
//return;
}
void NotifyHookRemove(unsigned __int64 addr)
{
auto info = HookRemovedNotif(addr);

8
vnrhook/pipe.h Normal file
View File

@ -0,0 +1,8 @@
#pragma once
#include "common.h"
#include "types.h"
void CreatePipe();
void NotifyHookRemove(unsigned __int64 addr);
void ConsoleOutput(LPCSTR text); // jichi 12/25/2013: Used to return length of sent text