LunaHook-mirror/LunaHook/engine64/CMVS.cpp
恍兮惚兮 163835bec9 some
2024-10-04 14:37:06 +08:00

68 lines
1.6 KiB
C++

#include "CMVS.h"
namespace
{
bool EMbed()
{
// 有多个,但是只有最后一个是有效的
const uint8_t bytes[] = {
//clang-format off
0xB8, 0x42, 0x81, 0x00, 0x00,
0x66, XX2, 0x74, XX,
0xB8, 0x76, 0x81, 0x00, 0x00,
0x66, XX2, 0x74, XX,
0xB8, 0x78, 0x81, 0x00, 0x00,
0x66, XX2, 0x74, XX,
//clang-format on
};
bool res = false;
auto addr = processStartAddress;
std::vector<uintptr_t> already;
while (addr)
{
addr = MemDbg::findBytes(bytes, sizeof(bytes), addr + 1, processStopAddress);
if (addr == 0)
continue;
auto f = MemDbg::findEnclosingAlignedFunction(addr);
if (f == 0)
continue;
if (std::find(already.begin(), already.end(), f) != already.end())
continue;
already.push_back(f);
}
if (already.size())
{
HookParam hp;
hp.address = already.back();
hp.offset = get_reg(regs::rdx);
hp.type = EMBED_ABLE | USING_STRING | EMBED_BEFORE_SIMPLE | EMBED_AFTER_NEW | EMBED_DYNA_SJIS;
hp.hook_font = F_GetGlyphOutlineA;
res |= NewHook(hp, "EmbedCMVS");
}
return res;
}
bool CMVSh()
{
DWORD align = 0xCCCCCCCC;
auto addr = MemDbg::findCallerAddress((uintptr_t)::GetGlyphOutlineA, align, processStartAddress, processStopAddress);
if (!addr)
return false;
HookParam hp;
hp.address = addr + 4;
hp.offset = get_reg(regs::r8);
hp.type = CODEC_ANSI_BE;
return NewHook(hp, "CMVS");
}
}
bool CMVS::attach_function()
{
bool b1 = CMVSh();
bool b2 = EMbed();
return b1 || b2;
}