LunaHook-mirror/LunaHook/engine32/DxLib.cpp

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2024-02-07 20:59:24 +08:00
#include"DxLib.h"
bool DxLibFilter(LPVOID data, size_t* size, HookParam*)
{
auto text = reinterpret_cast<LPSTR>(data);
auto len = reinterpret_cast<size_t*>(size);
StringCharReplacer(text, len, "%N", 2, ' ');
StringFilter(text, len, "%K", 2);
StringFilter(text, len, "%P", 2);
return true;
}
bool InsertDxLibHook()
{
/*
* Sample games:
* https://vndb.org/v7849
* https://vndb.org/v10231
*/
const BYTE bytes[] = {
0xF7, 0xC6, XX4, // test esi,00000003 << hook here
0x75, XX, // jne BookofShadows.exe+15FE54
0x8B, 0xD9, // mov ebx,ecx
0xC1, 0xE9, 0x02, // shr ecx,02
0x75, XX, // jne BookofShadows.exe+15FEAE
0xEB, XX // jmp BookofShadows.exe+15FE76
};
ULONG range = min(processStopAddress - processStartAddress, MAX_REL_ADDR);
ULONG addr = MemDbg::findBytes(bytes, sizeof(bytes), processStartAddress, processStartAddress + range);
if (!addr) {
ConsoleOutput("DxLib: pattern not found");
return false;
}
HookParam hp;
hp.address = addr;
hp.offset =get_reg(regs::esi);
hp.type = USING_STRING;
hp.filter_fun = DxLibFilter;
ConsoleOutput(" INSERT DxLib");
return NewHook(hp, "DxLib");
}
bool DxLib::attach_function() {
return InsertDxLibHook();
}