chenx221/Textractor_test
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

System43New engine hook

Browse Source
This commit is contained in:
Blu3train 2023-07-26 19:27:53 +02:00
parent f3fbe04409
commit fef6ef121e
1 changed files with 50 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

50
texthook/engine/engine.cc
View File

@ -5529,8 +5529,58 @@ static bool InsertSystem43NewHook(ULONG startAddress, ULONG stopAddress, LPCSTR
return true;
}
bool System43New2Filter(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 InsertSystem43New2Hook()
{
//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:System43new: 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 = System43New2Filter;
ConsoleOutput("vnreng: INSERT System43new");
NewHook(hp, "System43new");
return true;
}
bool InsertSystem43Hook()
{
if (InsertSystem43New2Hook())
return true;
//bool patched = Util::CheckFile(L"AliceRunPatch.dll");
bool patched = ::GetModuleHandleA("AliceRunPatch.dll");
// Insert new hook first