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StuffScript3 engine hooks

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Blu3train 2024-03-13 23:05:55 +01:00
parent 2442fb6c2d
commit c6c910b62f
1 changed files with 56 additions and 0 deletions
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56
texthook/engine/engine.cc
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@ -8492,10 +8492,66 @@ bool InsertStuffScript2Hook()
NewHook(hp, "StuffScript2");
return true;
}
bool StuffScript3Filter(LPVOID data, DWORD *size, HookParam *, BYTE)
{
auto text = reinterpret_cast<LPSTR>(data);
auto len = reinterpret_cast<size_t *>(size);
if (text[0] == '\x81' && text[1] == '\x40') { //removes space at the beginning of the sentence
*len -= 2;
::memmove(text, text + 2, *len);
}
StringFilterBetween(text, len, "/\x81\x79", 3, "\x81\x7A", 2); //remove hidden name
StringFilterBetween(text, len, "[", 1, "]", 1); //garbage
//ruby
CharFilter(text, len, '<');
StringFilterBetween(text, len, ",", 1, ">", 1);
StringCharReplacer(text, len, "_r\x81\x40", 4, ' ');
StringCharReplacer(text, len, "_r", 2, ' ');
return true;
}
bool InsertStuffScript3Hook()
{
//by Blu3train
/*
* Sample games:
* https://vndb.org/v3111
*/
const BYTE bytes[] = {
0xCC, // int 3
0x81, 0xEC, XX4, // sub esp,00000140 <-- hook here
0xA1, XX4, // mov eax,[EVOLIMIT.exe+8C1F0]
0x33, 0xC4, // xor eax,esp
0x89, 0x84, 0x24, XX4, // mov [esp+0000013C],eax
0x53, // push ebx
0x55, // push ebp
0x8B, 0xAC, 0x24, XX4, // mov ebp,[esp+0000014C]
0x8B, 0x45, 0x2C // mov eax,[ebp+2C]
};
ULONG range = min(processStopAddress - processStartAddress, MAX_REL_ADDR);
ULONG addr = MemDbg::findBytes(bytes, sizeof(bytes), processStartAddress, processStartAddress + range);
if (!addr)
return false;
HookParam hp = {};
hp.address = addr + 1;
hp.offset = pusha_ecx_off -4;
hp.index = 0;
hp.type = USING_STRING | NO_CONTEXT;
hp.filter_fun = StuffScript3Filter;
ConsoleOutput("vnreng: INSERT StuffScript3");
NewHook(hp, "StuffScript3");
return true;
}
void InsertStuffScriptHooks()
{
InsertStuffScriptHook();
InsertStuffScript2Hook();
InsertStuffScript3Hook();
}
bool InsertTriangleHook()
{