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Added example games and commented the assembly code

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This commit is contained in:
Blu3train 2023-04-24 22:49:39 +02:00
parent eeeba7841b
commit 4e61f3bfd2
1 changed files with 44 additions and 23 deletions
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45
texthook/engine/engine.cc
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@ -1462,23 +1462,44 @@ bool KiriKiriZ_msvcFilter(LPVOID data, DWORD *size, HookParam *, BYTE)
bool InsertKiriKiriZHook_msvc()
{
//by Blu3train
/*
* Sample games:
* https://vndb.org/r76735
* https://vndb.org/v22020
* https://vndb.org/v26052
* https://vndb.org/v17763
* https://vndb.org/v15538
* https://vndb.org/v18713
* https://vndb.org/v19385
* https://vndb.org/v18148
* https://vndb.org/v19841
* https://vndb.org/v24717
* https://vndb.org/v30458
* https://vndb.org/v33036
* https://vndb.org/v27448
* https://vndb.org/r67327
*/
auto module = GetModuleHandleW(L"textrender.dll");
if (!module)
return false;
const BYTE pattern[] = {
/*
0xFF, 0xD2,
0x88, 0x44, 0x24, 0x18,
0x8B, 0x44, 0x24, 0x10,
0x85, 0xC0,
0x74, 0x0B,
0x8D, 0x4C, 0x24, 0x18,
0x51,
0x50,
0xE8, 0xD3, 0xE4, 0xFF, 0xFF,
0xB0, 0x01,
0xC3
textrender.dll+BE39 - 8B 4C 24 2C - mov ecx,[esp+2C] << hook here
textrender.dll+BE3D - 50 - push eax
textrender.dll+BE3E - 8B 44 24 2C - mov eax,[esp+2C]
textrender.dll+BE42 - 8B 10 - mov edx,[eax]
textrender.dll+BE44 - FF D2 - call edx << start pattern
textrender.dll+BE46 - 88 44 24 18 - mov [esp+18],al
textrender.dll+BE4A - 8B 44 24 10 - mov eax,[esp+10]
textrender.dll+BE4E - 85 C0 - test eax,eax
textrender.dll+BE50 - 74 0B - je textrender.dll+BE5D
textrender.dll+BE52 - 8D 4C 24 18 - lea ecx,[esp+18]
textrender.dll+BE56 - 51 - push ecx
textrender.dll+BE57 - 50 - push eax
textrender.dll+BE58 - E8 33E5FFFF - call textrender.dll+A390
textrender.dll+BE5D - B0 01 - mov al,01
textrender.dll+BE5F - C3 - ret
*/
0xFF, XX,
0x88, XX, XX, XX,
@ -1492,7 +1513,7 @@ bool InsertKiriKiriZHook_msvc()
0xB0, 0x01,
0xC3
};
enum { addr_offset = -0x0B };
enum { addr_offset = -0x0B }; // 8B 4C 24 2C - mov ecx,[esp+2C] << hook here
ULONG addr = MemDbg::findBytes(pattern, sizeof(pattern), (DWORD)module, Util::QueryModuleLimits(module).second);
if (!addr) {