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恍兮惚兮 2024-12-14 14:21:41 +08:00
parent 927be11ee9
commit 1769bde333
3 changed files with 78 additions and 74 deletions
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123
cpp/LunaHook/LunaHook/engine32/VanillawareGC.cpp
View File

@ -1,5 +1,4 @@
#include"VanillawareGC.h"
#include "VanillawareGC.h"
/** jichi 7/20/2014 Vanillaware
* Tested game: 朧村正
@ -101,26 +100,28 @@
* 16094306 ^e9 91f8ffff jmp 16093b9c
* 1609430b cc int3
*/
namespace { // unnamed
namespace
{ // unnamed
// Return true if the text is a garbage character
inline bool _vanillawaregarbage_ch(char c)
{
return c == ' ' || c == '.' || c == '/'
|| c >= '0' && c <= '9'
|| c >= 'A' && c <= 'z' // also ignore ASCII 91-96: [ \ ] ^ _ `
;
}
// Return true if the text is a garbage character
inline bool _vanillawaregarbage_ch(char c)
{
return c == ' ' || c == '.' || c == '/' || c >= '0' && c <= '9' || c >= 'A' && c <= 'z' // also ignore ASCII 91-96: [ \ ] ^ _ `
;
}
// Return true if the text is full of garbage characters
bool _vanillawaregarbage(LPCSTR p)
{
enum { MAX_LENGTH = VNR_TEXT_CAPACITY };
for (int count = 0; *p && count < MAX_LENGTH; count++, p++)
if (!_vanillawaregarbage_ch(*p))
return false;
return true;
}
// Return true if the text is full of garbage characters
bool _vanillawaregarbage(LPCSTR p)
{
enum
{
MAX_LENGTH = VNR_TEXT_CAPACITY
};
for (int count = 0; *p && count < MAX_LENGTH; count++, p++)
if (!_vanillawaregarbage_ch(*p))
return false;
return true;
}
} // unnamed namespace
static void SpecialGCHookVanillaware(hook_context *context, HookParam *hp, TextBuffer *buffer, uintptr_t *split)
@ -128,7 +129,8 @@ static void SpecialGCHookVanillaware(hook_context *context, HookParam *hp, TextB
DWORD eax = context->eax;
LPCSTR text = LPCSTR(eax + hp->user_value);
static LPCSTR lasttext;
if (lasttext != text && *text && !_vanillawaregarbage(text)) {
if (lasttext != text && *text && !_vanillawaregarbage(text))
{
lasttext = text;
*split = context->ecx;
buffer->from(text);
@ -136,42 +138,70 @@ static void SpecialGCHookVanillaware(hook_context *context, HookParam *hp, TextB
}
}
// jichi 7/17/2014: Search mapped memory for emulators
ULONG _SafeMatchBytesInMappedMemory(LPCVOID pattern, DWORD patternSize, BYTE wildcard,
ULONG start, ULONG stop, ULONG step)
{
for (ULONG i = start; i < stop; i += step) // + patternSize to avoid overlap
if (ULONG r = SafeFindBytes(pattern, patternSize, i, i + step + patternSize + 1))
return r;
return 0;
}
ULONG SafeMatchBytesInGCMemory(LPCVOID pattern, DWORD patternSize)
{
enum : ULONG
{
start = MemDbg::MappedMemoryStartAddress // 0x01000000
,
stop = MemDbg::MemoryStopAddress // 0x7ffeffff
,
step = start
};
return _SafeMatchBytesInMappedMemory(pattern, patternSize, XX, start, stop, step);
}
bool InsertVanillawareGCHook()
{
ConsoleOutput("Vanillaware GC: enter");
const BYTE bytes[] = {
0x83,0xc4, 0x04, // 16094193 83c4 04 add esp,0x4
0xeb, 0x11, // 16094196 eb 11 jmp short 160941a9
0x8b,0xc1, // 16094198 8bc1 mov eax,ecx
0x81,0xe0, 0xff,0xff,0xff,0x3f, // 1609419a 81e0 ffffff3f and eax,0x3fffffff
0x0f,0xb6,0x80, XX4, // 160941a0 0fb680 00000810 movzx eax,byte ptr ds:[eax+0x10080000] ; jichi: hook here
0x66,0x90, // 160941a7 66:90 nop
0x81,0xc6, 0x01,0x00,0x00,0x00 // 160941a9 81c6 01000000 add esi,0x1
//0x89,05 80f86701 // 160941af 8905 80f86701 mov dword ptr ds:[0x167f880],eax
//0x81,3d 80f86701 00 // 160941b5 813d 80f86701 00>cmp dword ptr ds:[0x167f880],0x0
//0xc7,05 8cf86701 00 // 160941bf c705 8cf86701 00>mov dword ptr ds:[0x167f88c],0x0
//0x89,35 90f86701 // 160941c9 8935 90f86701 mov dword ptr ds:[0x167f890],esi
//0x7c, 14 // 160941cf 7c 14 jl short 160941e5
//0x7f, 09 // 160941d1 7f 09 jg short 160941dc
//0xc6,05 0cfb6701 02 // 160941d3 c605 0cfb6701 02 mov byte ptr ds:[0x167fb0c],0x2
//0xeb, 26 // 160941da eb 26 jmp short 16094202
const BYTE bytes[] = {
0x83, 0xc4, 0x04, // 16094193 83c4 04 add esp,0x4
0xeb, 0x11, // 16094196 eb 11 jmp short 160941a9
0x8b, 0xc1, // 16094198 8bc1 mov eax,ecx
0x81, 0xe0, 0xff, 0xff, 0xff, 0x3f, // 1609419a 81e0 ffffff3f and eax,0x3fffffff
0x0f, 0xb6, 0x80, XX4, // 160941a0 0fb680 00000810 movzx eax,byte ptr ds:[eax+0x10080000] ; jichi: hook here
0x66, 0x90, // 160941a7 66:90 nop
0x81, 0xc6, 0x01, 0x00, 0x00, 0x00 // 160941a9 81c6 01000000 add esi,0x1
// 0x89,05 80f86701 // 160941af 8905 80f86701 mov dword ptr ds:[0x167f880],eax
// 0x81,3d 80f86701 00 // 160941b5 813d 80f86701 00>cmp dword ptr ds:[0x167f880],0x0
// 0xc7,05 8cf86701 00 // 160941bf c705 8cf86701 00>mov dword ptr ds:[0x167f88c],0x0
// 0x89,35 90f86701 // 160941c9 8935 90f86701 mov dword ptr ds:[0x167f890],esi
// 0x7c, 14 // 160941cf 7c 14 jl short 160941e5
// 0x7f, 09 // 160941d1 7f 09 jg short 160941dc
// 0xc6,05 0cfb6701 02 // 160941d3 c605 0cfb6701 02 mov byte ptr ds:[0x167fb0c],0x2
// 0xeb, 26 // 160941da eb 26 jmp short 16094202
};
enum
{
memory_offset = 3
}; // 160941a0 0fb680 00000810 movzx eax,byte ptr ds:[eax+0x10080000]
enum
{
addr_offset = 0x160941a0 - 0x16094193
};
enum { memory_offset = 3 }; // 160941a0 0fb680 00000810 movzx eax,byte ptr ds:[eax+0x10080000]
enum { addr_offset = 0x160941a0 - 0x16094193 };
DWORD addr = SafeMatchBytesInGCMemory(bytes, sizeof(bytes));
auto succ=false;
auto succ = false;
if (!addr)
ConsoleOutput("Vanillaware GC: pattern not found");
else {
else
{
HookParam hp;
hp.address = addr + addr_offset;
hp.user_value = *(DWORD *)(hp.address + memory_offset);
hp.text_fun = SpecialGCHookVanillaware;
hp.type = USING_STRING|NO_CONTEXT; // no context is needed to get rid of variant retaddr
hp.type = USING_STRING | NO_CONTEXT; // no context is needed to get rid of variant retaddr
ConsoleOutput("Vanillaware GC: INSERT");
succ|=NewHook(hp, "Vanillaware GC");
succ |= NewHook(hp, "Vanillaware GC");
}
ConsoleOutput("Vanillaware GC: leave");
@ -184,9 +214,10 @@ bool InsertGCHooks()
{
// TODO: Add generic hooks
return InsertVanillawareGCHook();
//return false;
// return false;
}
bool VanillawareGC::attach_function() {
return InsertGCHooks();
bool VanillawareGC::attach_function()
{
return InsertGCHooks();
}

24
cpp/LunaHook/LunaHook/util/util.cc
View File

@ -392,30 +392,6 @@ uintptr_t SafeFindBytes(LPCVOID pattern, size_t patternSize, uintptr_t lowerBoun
}
return r;
}
#ifndef _WIN64
// jichi 7/17/2014: Search mapped memory for emulators
ULONG _SafeMatchBytesInMappedMemory(LPCVOID pattern, DWORD patternSize, BYTE wildcard,
ULONG start, ULONG stop, ULONG step)
{
for (ULONG i = start; i < stop; i += step) // + patternSize to avoid overlap
if (ULONG r = SafeFindBytes(pattern, patternSize, i, i + step + patternSize + 1))
return r;
return 0;
}
ULONG SafeMatchBytesInGCMemory(LPCVOID pattern, DWORD patternSize)
{
enum : ULONG
{
start = MemDbg::MappedMemoryStartAddress // 0x01000000
,
stop = MemDbg::MemoryStopAddress // 0x7ffeffff
,
step = start
};
return _SafeMatchBytesInMappedMemory(pattern, patternSize, XX, start, stop, step);
}
#endif
#ifndef _WIN64

3
cpp/LunaHook/LunaHook/util/util.h
View File

@ -55,9 +55,6 @@ uintptr_t SafeFindEnclosingAlignedFunction(uintptr_t addr, uintptr_t range);
uintptr_t SafeFindBytes(LPCVOID pattern, size_t patternSize, uintptr_t lowerBound, uintptr_t upperBound);
#ifndef _WIN64
ULONG _SafeMatchBytesInMappedMemory(LPCVOID pattern, DWORD patternSize, BYTE wildcard,
ULONG start, ULONG stop, ULONG step);
ULONG SafeMatchBytesInGCMemory(LPCVOID pattern, DWORD patternSize);
std::vector<DWORD> findrelativecall(const BYTE *pattern, int length, DWORD calladdress, DWORD start, DWORD end);
uintptr_t finddllfunctioncall(uintptr_t funcptr, uintptr_t start, uintptr_t end, WORD sig = 0x15ff, bool reverse = false);