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Merge remote-tracking branch 'Blu3train/System43NewEngineHook'

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Chenx221 2024-09-05 11:51:57 +08:00
commit 99c0c75211
1 changed files with 82 additions and 0 deletions
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82
texthook/engine/engine.cc
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@ -5858,8 +5858,90 @@ static bool InsertSystem43NewHook(ULONG startAddress, ULONG stopAddress, LPCSTR
return true;
}
bool System43aFilter(LPVOID data, DWORD *size, HookParam *, BYTE)
{
auto text = reinterpret_cast<LPSTR>(data);
auto len = reinterpret_cast<size_t *>(size);
CharReplacer(text, len, '\n', ' ');
if (cpp_strnstr(text, "${", *len)) {
StringFilterBetween(text, len, "${", 3, "}", 1);
}
return true;
}
bool InsertSystem43aHook()
{
//by Blu3train
/*
* Sample games:
* https://vndb.org/r84067
*/
const BYTE bytes[] = {
0xC7, 0x46, 0x10, XX4, // mov [esi+10],00000000
0x72, 0x02, // jb dohnadohna.exe+1BFA7E
0x8B, 0x36, // mov esi,[esi]
0x8B, 0x4C, 0x24, 0x14, // mov ecx,[esp+14]
0x57, // push edi
0xC6, 0x06, 0x00 // mov byte ptr [esi],00 << hook here
};
enum { addr_offset = sizeof(bytes) - 3 };
ULONG range = min(processStopAddress - processStartAddress, MAX_REL_ADDR);
ULONG addr = MemDbg::findBytes(bytes, sizeof(bytes), processStartAddress, processStartAddress + range);
if (!addr) {
ConsoleOutput("vnreng:System43a: pattern not found");
return false;
}
HookParam hp = {};
hp.address = addr + addr_offset;
hp.offset = pusha_edx_off - 4;
hp.split = pusha_esp_off - 4;
hp.type = NO_CONTEXT | USING_STRING | USING_SPLIT;
hp.filter_fun = System43aFilter;
ConsoleOutput("vnreng: INSERT System43a");
NewHook(hp, "System43a");
return true;
}
bool InsertSystem43bHook()
{
//by Blu3train
/*
* Sample games:
* https://vndb.org/v10732
*/
const BYTE bytes[] = {
0x8B, 0xCE, // mov ecx,esi << hook here
0xE8, XX4, // call Oyakorankan.exe+13D890
0x8B, 0x43, 0x04, // mov eax,[ebx+04]
0x8D, 0x4C, 0x24, 0x10, // lea ecx,[esp+10]
0x3B, 0xC8, // cmp ecx,eax
0x73, 0x64 // jae Oyakorankan.exe+1403B2
};
ULONG range = min(processStopAddress - processStartAddress, MAX_REL_ADDR);
ULONG addr = MemDbg::findBytes(bytes, sizeof(bytes), processStartAddress, processStartAddress + range);
if (!addr) {
ConsoleOutput("vnreng:System43b: pattern not found");
return false;
}
HookParam hp = {};
hp.address = addr;
hp.offset = pusha_edx_off - 4;
hp.split = 4 * 12; //arg12
hp.type = USING_STRING | USING_SPLIT;
ConsoleOutput("vnreng: INSERT System43b");
NewHook(hp, "System43b");
return true;
}
bool InsertSystem43Hook()
{
if (InsertSystem43aHook() || InsertSystem43bHook())
return true;
//bool patched = Util::CheckFile(L"AliceRunPatch.dll");
bool patched = ::GetModuleHandleA("AliceRunPatch.dll");
// Insert new hook first