mirror of
https://github.com/HIllya51/LunaHook.git
synced 2024-12-30 23:14:12 +08:00
429 lines
15 KiB
C++
429 lines
15 KiB
C++
#include"Elf.h"
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/**
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* jichi 6/1/2014:
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* Observations from 愛姉妹4
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* - Scenario: arg1 + 4*5 is 0, arg1+0xc is address of the text
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* - Character: arg1 + 4*10 is 0, arg1+0xc is text
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*/
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static inline size_t _elf_strlen(LPCSTR p) // limit search address which might be bad
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{
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//CC_ASSERT(p);
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for (size_t i = 0; i < VNR_TEXT_CAPACITY; i++)
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if (!*p++)
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return i;
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return 0; // when len >= VNR_TEXT_CAPACITY
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}
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static void SpecialHookElf(hook_stack* stack, HookParam *, uintptr_t *data, uintptr_t *split, size_t *len)
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{
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//DWORD arg1 = *(DWORD *)(esp_base + 0x4);
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DWORD arg1 = stack->stack[1];
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DWORD arg2_scene = arg1 + 4*5,
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arg2_chara = arg1 + 4*10;
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DWORD text; //= 0; // This variable will be killed
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if (*(DWORD *)arg2_scene == 0) {
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text = *(DWORD *)(arg2_scene + 4*3);
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if (!text || ::IsBadReadPtr((LPCVOID)text, 1)) // Text from scenario could be bad when open backlog while the character is speaking
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return;
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*split = 1;
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} else if (*(DWORD *)arg2_chara == 0) {
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text = arg2_chara + 4*3;
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*split = 2;
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} else
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return;
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//if (text && text < MemDbg::UserMemoryStopAddress) {
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*len = _elf_strlen((LPCSTR)text); // in case the text is bad but still readable
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//*len = ::strlen((LPCSTR)text);
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*data = text;
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}
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/**
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* jichi 5/31/2014: elf's
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* Type1: SEXヂ<58>ーチャー剛史 trial, reladdr = 0x2f0f0, 2 parameters
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* Type2: 愛姉妹4, reladdr = 0x2f9b0, 3 parameters
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*
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* IDA: sub_42F9B0 proc near ; bp-based frame
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* var_8 = dword ptr -8
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* var_4 = byte ptr -4
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* var_3 = word ptr -3
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* arg_0 = dword ptr 8
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* arg_4 = dword ptr 0Ch
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* arg_8 = dword ptr 10h
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*
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* Call graph (Type2):
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* 0x2f9b0 ; hook here
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* > 0x666a0 ; called multiple time
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* > TextOutA ; there are two TextOutA, the second is the right one
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*
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* Function starts (Type1), pattern offset: 0xc
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* - 012ef0f0 /$ 55 push ebp ; jichi: hook
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* - 012ef0f1 |. 8bec mov ebp,esp
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* - 012ef0f3 |. 83ec 10 sub esp,0x10
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* - 012ef0f6 |. 837d 0c 00 cmp dword ptr ss:[ebp+0xc],0x0
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* - 012ef0fa |. 53 push ebx
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* - 012ef0fb |. 56 push esi
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* - 012ef0fc |. 75 0f jnz short stt_tria.012ef10d ; jicchi: pattern starts
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* - 012ef0fe |. 8b45 08 mov eax,dword ptr ss:[ebp+0x8]
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* - 012ef101 |. 8b48 04 mov ecx,dword ptr ds:[eax+0x4]
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* - 012ef104 |. 8b91 90000000 mov edx,dword ptr ds:[ecx+0x90] ; jichi: pattern stops
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* - 012ef10a |. 8955 0c mov dword ptr ss:[ebp+0xc],edx
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* - 012ef10d |> 8b4d 08 mov ecx,dword ptr ss:[ebp+0x8]
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* - 012ef110 |. 8b51 04 mov edx,dword ptr ds:[ecx+0x4]
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* - 012ef113 |. 33c0 xor eax,eax
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* - 012ef115 |. c645 f8 00 mov byte ptr ss:[ebp-0x8],0x0
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* - 012ef119 |. 66:8945 f9 mov word ptr ss:[ebp-0x7],ax
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* - 012ef11d |. 8b82 b0000000 mov eax,dword ptr ds:[edx+0xb0]
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* - 012ef123 |. 8945 f4 mov dword ptr ss:[ebp-0xc],eax
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* - 012ef126 |. 33db xor ebx,ebx
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* - 012ef128 |> 8b4f 20 /mov ecx,dword ptr ds:[edi+0x20]
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* - 012ef12b |. 83f9 10 |cmp ecx,0x10
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*
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* Function starts (Type2), pattern offset: 0x10
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* - 0093f9b0 /$ 55 push ebp ; jichi: hook here
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* - 0093f9b1 |. 8bec mov ebp,esp
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* - 0093f9b3 |. 83ec 08 sub esp,0x8
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* - 0093f9b6 |. 837d 10 00 cmp dword ptr ss:[ebp+0x10],0x0
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* - 0093f9ba |. 53 push ebx
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* - 0093f9bb |. 8b5d 0c mov ebx,dword ptr ss:[ebp+0xc]
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* - 0093f9be |. 56 push esi
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* - 0093f9bf |. 57 push edi
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* - 0093f9c0 |. 75 0f jnz short silkys.0093f9d1 ; jichi: pattern starts
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* - 0093f9c2 |. 8b45 08 mov eax,dword ptr ss:[ebp+0x8]
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* - 0093f9c5 |. 8b48 04 mov ecx,dword ptr ds:[eax+0x4]
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* - 0093f9c8 |. 8b91 90000000 mov edx,dword ptr ds:[ecx+0x90] ; jichi: pattern stops
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* - 0093f9ce |. 8955 10 mov dword ptr ss:[ebp+0x10],edx
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* - 0093f9d1 |> 33c0 xor eax,eax
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* - 0093f9d3 |. c645 fc 00 mov byte ptr ss:[ebp-0x4],0x0
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* - 0093f9d7 |. 66:8945 fd mov word ptr ss:[ebp-0x3],ax
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* - 0093f9db |. 33ff xor edi,edi
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* - 0093f9dd |> 8b53 20 /mov edx,dword ptr ds:[ebx+0x20]
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* - 0093f9e0 |. 8d4b 0c |lea ecx,dword ptr ds:[ebx+0xc]
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* - 0093f9e3 |. 83fa 10 |cmp edx,0x10
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*/
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bool InsertElfHook()
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{
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const BYTE bytes[] = {
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//0x55, // 0093f9b0 /$ 55 push ebp ; jichi: hook here
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//0x8b,0xec, // 0093f9b1 |. 8bec mov ebp,esp
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//0x83,0xec, 0x08, // 0093f9b3 |. 83ec 08 sub esp,0x8
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//0x83,0x7d, 0x10, 0x00, // 0093f9b6 |. 837d 10 00 cmp dword ptr ss:[ebp+0x10],0x0
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//0x53, // 0093f9ba |. 53 push ebx
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//0x8b,0x5d, 0x0c, // 0093f9bb |. 8b5d 0c mov ebx,dword ptr ss:[ebp+0xc]
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//0x56, // 0093f9be |. 56 push esi
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//0x57, // 0093f9bf |. 57 push edi
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0x75, 0x0f, // 0093f9c0 |. 75 0f jnz short silkys.0093f9d1
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0x8b,0x45, 0x08, // 0093f9c2 |. 8b45 08 mov eax,dword ptr ss:[ebp+0x8]
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0x8b,0x48, 0x04, // 0093f9c5 |. 8b48 04 mov ecx,dword ptr ds:[eax+0x4]
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0x8b,0x91, 0x90,0x00,0x00,0x00 // 0093f9c8 |. 8b91 90000000 mov edx,dword ptr ds:[ecx+0x90]
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};
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//enum { addr_offset = 0xc };
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ULONG range = min(processStopAddress - processStartAddress, MAX_REL_ADDR);
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ULONG addr = MemDbg::findBytes(bytes, sizeof(bytes), processStartAddress, processStartAddress + range);
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//GROWL_DWORD(addr);
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//addr = 0x42f170; // 愛姉妹4 Trial
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//reladdr = 0x2f9b0; // 愛姉妹4
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//reladdr = 0x2f0f0; // SEXヂ<58>ーチャー剛史 trial
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if (!addr) {
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ConsoleOutput("Elf: pattern not found");
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return false;
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}
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enum : BYTE { push_ebp = 0x55 };
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for (int i = 0; i < 0x20; i++, addr--) // value of i is supposed to be 0xc or 0x10
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if (*(BYTE *)addr == push_ebp) { // beginning of the function
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HookParam hp;
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hp.address = addr;
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hp.text_fun = SpecialHookElf;
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hp.type = USING_STRING|NO_CONTEXT; // = 9
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ConsoleOutput("INSERT Elf");
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return NewHook(hp, "Elf");
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}
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ConsoleOutput("Elf: function not found");
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return false;
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}
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namespace{
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bool __(){
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const BYTE bytes[] = {
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//姫騎士オリヴィア ～へ、変態、この変態男!少しは恥を知りなさい!～
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//女系家族III～秘密HIMITSU卑蜜～
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//ベロちゅー！～コスプレメイドをエロメロしちゃう魔法の舌戯～
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0x0F,0xB7,XX,XX4, //v11 == 30081 // movzx edx, ds:word_4C285C //word_4C285C dw 7581h
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};
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for (auto addr : Util::SearchMemory(bytes, sizeof(bytes), PAGE_EXECUTE, processStartAddress, processStopAddress)) {
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BYTE reg=*(BYTE*)(addr+2);
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if((reg!=0x05)&&(reg!=0x0d)&&(reg!=0x1d)&&(reg!=0x15))continue;
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int word_4C285C_addr=*(int*)(addr+3);
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if(word_4C285C_addr<processStartAddress || word_4C285C_addr>processStopAddress)continue;
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int word_4C285C=*(int*)word_4C285C_addr;
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if((word_4C285C)!=0x7581)continue;
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addr = findfuncstart(addr, 0x200);
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if (addr == 0)continue;
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HookParam hp;
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hp.address = addr;
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hp.offset=get_stack(1);
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hp.type = USING_STRING;
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return NewHook(hp, "aiwin6");
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}
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return false;
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}
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}
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#include"embed_util.h"
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namespace { // unnamed
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namespace ScenarioHook {
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namespace Private {
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struct TextArgument
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{
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DWORD _unknown1[5];
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DWORD scenarioFlag; // +4*5, 0 if it is scenario
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DWORD _unknown2[2];
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LPCSTR scenarioText; // +4*5+4*3, could be bad address though
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DWORD _unknown3;
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DWORD nameFlag; // +4*10, 0 if it is name
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DWORD _unknown4[2];
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char nameText[1]; // +4*10+4*3, could be bad address though
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};
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std::string data_;
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TextArgument *scenarioArg_,
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*nameArg_;
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LPCSTR scenarioText_;
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enum { MaxNameSize = 100 };
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char nameText_[MaxNameSize + 1];
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bool hookBefore(hook_stack*s,void* data, size_t* len,uintptr_t*role)
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{
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auto arg = (TextArgument *)s->stack[0]; // arg1 on the top of the stack
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// Scenario
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if (arg->scenarioFlag == 0) {
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* role = Engine::ScenarioRole ;
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// Text from scenario could be bad when open backlog while the character is speaking
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auto text = arg->scenarioText;
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if (!Engine::isAddressReadable(text))
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return 0;
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return write_string_overwrite(data,len,text);
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// data_ = q->dispatchTextASTD(text, role, sig);
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// scenarioArg_ = arg;
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// scenarioText_ = arg->scenarioText;
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// arg->scenarioText = (LPCSTR)data_.c_str();
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} else if (arg->nameFlag == 0) {
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* role = Engine::NameRole;
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auto text = arg->nameText;
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return write_string_overwrite(data,len,text);
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// ::memcpy(text, newData.constData(), qMin(oldData.size(), newData.size()));
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//int left = oldData.size() - newData.size();
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//if (left > 0)
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// ::memset(text + oldData.size() - left, 0, left);
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}
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return 0;
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}
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void hookafter1(hook_stack*s,void* data1, size_t len){
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auto newData=std::string((char*)data1,len);
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auto arg = (TextArgument *)s->stack[0]; // arg1 on the top of the stack
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// Scenario
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if (arg->scenarioFlag == 0) {
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auto text = arg->scenarioText;
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if (!Engine::isAddressReadable(text))
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return ;
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data_ = newData;
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scenarioArg_ = arg;
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scenarioText_ = arg->scenarioText;
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arg->scenarioText = (LPCSTR)data_.c_str();
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} else if (arg->nameFlag == 0) {
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auto text = arg->nameText;
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std::string oldData=text;
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::memcpy(text, newData.c_str(), min(oldData.size(), newData.size()));
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int left = oldData.size() - newData.size();
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if (left > 0)
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::memset(text + oldData.size() - left, 0, left);
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}
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}
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bool hookAfter(hook_stack*s,void* data, size_t* len,uintptr_t*role)
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{
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if (scenarioArg_) {
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scenarioArg_->scenarioText = scenarioText_;
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scenarioArg_ = nullptr;
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}
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if (nameArg_) {
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::strcpy(nameArg_->nameText, nameText_);
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nameArg_ = nullptr;
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}
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return 0;
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}
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} // namespace Private
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/**
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* jichi 5/31/2014: elf's
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* Type1: SEXティーチャー剛史 trial, reladdr = 0x2f0f0, 2 parameters
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* Type2: 愛姉妹4, reladdr = 0x2f9b0, 3 parameters
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*
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* The hooked function is the caller of the caller of TextOutA.
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*/
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bool attach(ULONG startAddress, ULONG stopAddress)
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{
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const uint8_t bytes[] = {
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//0x55, // 0093f9b0 /$ 55 push ebp ; jichi: hook here
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//0x8b,0xec, // 0093f9b1 |. 8bec mov ebp,esp
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//0x83,0xec, 0x08, // 0093f9b3 |. 83ec 08 sub esp,0x8
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//0x83,0x7d, 0x10, 0x00, // 0093f9b6 |. 837d 10 00 cmp dword ptr ss:[ebp+0x10],0x0
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//0x53, // 0093f9ba |. 53 push ebx
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//0x8b,0x5d, 0x0c, // 0093f9bb |. 8b5d 0c mov ebx,dword ptr ss:[ebp+0xc]
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//0x56, // 0093f9be |. 56 push esi
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//0x57, // 0093f9bf |. 57 push edi
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0x75, 0x0f, // 0093f9c0 |. 75 0f jnz short silkys.0093f9d1
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0x8b,0x45, 0x08, // 0093f9c2 |. 8b45 08 mov eax,dword ptr ss:[ebp+0x8]
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0x8b,0x48, 0x04, // 0093f9c5 |. 8b48 04 mov ecx,dword ptr ds:[eax+0x4]
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0x8b,0x91, 0x90,0x00,0x00,0x00 // 0093f9c8 |. 8b91 90000000 mov edx,dword ptr ds:[ecx+0x90]
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};
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ULONG addr = MemDbg::findBytes(bytes, sizeof(bytes), startAddress, stopAddress);
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if (!addr)
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return false;
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addr = MemDbg::findEnclosingAlignedFunction(addr);
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if (!addr)
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return false;
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int count = 0;
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auto fun = [&count](ULONG addr) -> bool {
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bool succ=false;
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HookParam hp;
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hp.address=addr;
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hp.hook_before=Private::hookBefore;
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hp.hook_after=Private::hookafter1;
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hp.type=USING_STRING|EMBED_ABLE|EMBED_DYNA_SJIS;
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hp.hook_font=F_TextOutA;
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succ|=NewHook(hp,"EmbedElf");
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hp.address=addr+5;
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hp.hook_before=Private::hookAfter;
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succ|=NewHook(hp,"EmbedElf");
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count+=1;
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return succ; // replace all functions
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};
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MemDbg::iterNearCallAddress(fun, addr, startAddress, stopAddress);
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return count;
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//lastCaller = MemDbg::findEnclosingAlignedFunction(lastCaller);
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//Private::attached_ = false;
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//return winhook::hook_before(lastCaller, [=](winhook::hook_stack *s) -> bool {
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// if (Private::attached_)
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// return true;
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// Private::attached_ = true;
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// if (ULONG addr = MemDbg::findEnclosingAlignedFunction(s->stack[0])) {
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// DOUT("dynamic pattern found");
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// Private::oldHookFun = (Private::hook_fun_t)winhook::replace_fun(addr, (ULONG)Private::newHookFun);
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// }
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// return true;
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//});
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}
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} // namespace ScenarioHook
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} // unnamed namespace
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bool Elf::attach_function() {
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auto _1= InsertElfHook()||__();
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return ScenarioHook::attach(processStartAddress,processStopAddress)||_1;
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}
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bool isshiftjisX(WORD w){
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return (((BYTE)(w))<=0xfc)&& (((BYTE)(w))>=0x80);
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}
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void SpecialHookElf2(hook_stack* stack, HookParam *, uintptr_t *data, uintptr_t *split, size_t *len)
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{
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static DWORD lasttext;
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DWORD eax = stack->eax;
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DWORD edx = stack->edx;
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*data = *(WORD*)(eax+edx);
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if(isshiftjisX(*data)==false){
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*len=0;
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return;
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}
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*len = 2;
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*split=stack->stack[1];
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}
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bool Elf2attach_function() {
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//这个有好多乱码
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//[エルフ]あしたの雪之丞 DVD Special Edition
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const uint8_t bytes[] = {
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0x53,
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0x8a,0x1c,0x02,
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0x8b,0x54,0x24,0x08,
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0x03,0xc2
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};
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ULONG addr = MemDbg::findBytes(bytes, sizeof(bytes), processStartAddress, processStopAddress);
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if (!addr)
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return false;
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HookParam hp;
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hp.address=addr+1;
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hp.text_fun = SpecialHookElf2;
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hp.type=NO_CONTEXT;
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return NewHook(hp,"Elf");
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}
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bool elf2(){
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//[エルフ]あしたの雪之丞 DVD Special Edition
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//勝 あしたの雪之丞２
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const uint8_t bytes[] = {
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0x66,0x8b,0x8e,XX4,
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0x66,0x8b,0x96,XX4,
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0x66,0x01,0x8e,XX4,
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0x66,0x89,0x96,XX4,
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0x8b,0x06,
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0x6a,0x00,
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0x8b,0xce,
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0xff,0x50,0x08,
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0x84,0xc0
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};
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ULONG addr = MemDbg::findBytes(bytes, sizeof(bytes), processStartAddress, processStopAddress);
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if (!addr)
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return false;
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HookParam hp;
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hp.address=addr+sizeof(bytes);
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hp.type=NO_CONTEXT|USING_STRING;
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hp.offset=get_reg(regs::ebx);
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||
return NewHook(hp,"Elf");
|
||
}
|
||
bool Elf2::attach_function(){
|
||
return elf2()||Elf2attach_function();
|
||
}
|
||
|
||
|
||
bool ElfFunClubFinal::attach_function(){
|
||
auto entry=Util::FindImportEntry(processStartAddress,(DWORD)TextOutA);
|
||
|
||
if(entry==0)return false;
|
||
BYTE bytes[]={0x8b,XX,XX4};//mov reg,ds:TextOutA
|
||
memcpy(bytes+2,&entry,4);
|
||
bool succ=false;
|
||
for(auto addr:Util::SearchMemory(bytes, sizeof(bytes), PAGE_EXECUTE, processStartAddress, processStopAddress)){
|
||
BYTE s[]={XX,0xCC,0xCC,0xCC};
|
||
addr=reverseFindBytes(s,4,addr-0x100,addr);
|
||
if(addr==0)continue;
|
||
HookParam hp;
|
||
hp.address=addr+4;
|
||
hp.type=CODEC_ANSI_BE|USING_CHAR;
|
||
hp.text_fun=[](hook_stack* stack, HookParam *hp, uintptr_t* data, uintptr_t* split, size_t* len){
|
||
*data=(WORD)stack->stack[3];
|
||
*len=2;
|
||
*split=stack->stack[2]>8;
|
||
};
|
||
succ|= NewHook(hp,"ElfFunClubFinal");
|
||
}
|
||
return succ;
|
||
|
||
} |