LunaHook-mirror/LunaHook/engine32/Ciel.cpp

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2024-02-07 20:59:24 +08:00
#include"Ciel.h"
bool CielFilter(LPVOID data, size_t *size, HookParam *)
{
auto text = reinterpret_cast<LPSTR>(data);
auto len = reinterpret_cast<size_t *>(size);
if (*len == 1) return false;
//StringCharReplacer(text, len, "^n", 2, ' ');
return true;
}
bool InsertCielHook()
{
/*
* Sample games:
* https://vndb.org/r26480
* https://vndb.org/v1648
* https://vndb.org/v10392
*/
const BYTE bytes[] = {
0x50, // push eax << hook here
0xE8, XX4, // call FaultA.exe+81032
0x83, 0xC4, 0x04, // add esp,04
0x85, 0xC0, // test eax,eax
0x74, 0x32, // je FaultA.exe+41FA6
0x81, 0x7C, 0x24, 0x10, XX4 // cmp [esp+10],000003FE
};
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;
hp.offset=get_reg(regs::edi);
hp.index = 0;
hp.type = DATA_INDIRECT;
hp.filter_fun = CielFilter;
return NewHook(hp, "Ciel");
}
bool Ciel::attach_function() {
return InsertCielHook();
}