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Minori3-4 engine hooks

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This commit is contained in:
Blu3train 2024-02-06 01:30:20 +01:00
parent aa8f461a9a
commit 489b9eaa74
1 changed files with 70 additions and 1 deletions
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71
texthook/engine/engine.cc
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@ -21848,8 +21848,77 @@ bool InsertMinori2Hook()
return true;
}
bool InsertMinori3Hook()
{
//by Blu3train
/*
* Sample games:
* https://vndb.org/r10137
*/
const BYTE bytes[] = {
0x0F, 0xB6, 0x08, // movzx ecx,byte ptr [eax] << hook here
0x3B, 0xCA // cmp ecx,edx
};
ULONG range = min(processStopAddress - processStartAddress, MAX_REL_ADDR);
ULONG addr = MemDbg::findBytes(bytes, sizeof(bytes), processStartAddress, processStartAddress + range);
if (!addr) {
ConsoleOutput("vnreng:Minori3: pattern not found");
return false;
}
HookParam hp = {};
hp.address = addr;
hp.offset = pusha_eax_off -4;
hp.split = pusha_esp_off -4;
hp.split_index = 0;
hp.length_offset = 1;
hp.codepage = 1252;
hp.type = NO_CONTEXT | USING_SPLIT | DATA_INDIRECT;
ConsoleOutput("vnreng: INSERT Minori3");
NewHook(hp, "Minori3");
return true;
}
bool InsertMinori4Hook()
{
//by Blu3train
/*
* Sample games:
* https://vndb.org/r10138
*/
const BYTE bytes[] = {
0x68, XX4, // push ef_latter_en.exe+12EDB0 << hook here
0x33, 0xFF, // xor edi,edi
0x8D, 0xB5, XX4, // lea esi,[ebp-00000090]
0xC7, 0x45, 0x84, XX4 // mov [ebp-7C],0000000F
};
ULONG range = min(processStopAddress - processStartAddress, MAX_REL_ADDR);
ULONG addr = MemDbg::findBytes(bytes, sizeof(bytes), processStartAddress, processStartAddress + range);
if (!addr) {
ConsoleOutput("vnreng:Minori4: pattern not found");
return false;
}
HookParam hp = {};
hp.address = addr;
hp.offset = pusha_edx_off -4;
hp.split = pusha_esp_off -4;
hp.split_index = 0;
hp.codepage = 1252;
hp.type = NO_CONTEXT | USING_STRING | USING_SPLIT;
ConsoleOutput("vnreng: INSERT Minori4");
NewHook(hp, "Minori4");
return true;
}
bool InsertMinoriHooks()
{ return InsertMinori1Hook() || InsertMinori2Hook();}
{
bool ok = InsertMinori1Hook();
ok = InsertMinori2Hook() || ok;
ok = InsertMinori3Hook() || ok;
ok = InsertMinori4Hook() || ok;
return ok;
}
} // namespace Engine