mirror of
https://github.com/HIllya51/LunaHook.git
synced 2024-11-23 22:05:36 +08:00
78 lines
2.3 KiB
C++
78 lines
2.3 KiB
C++
#include"CodeX.h"
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bool CodeXFilter(LPVOID data, size_t *size, HookParam *)
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{
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auto text = reinterpret_cast<LPSTR>(data);
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auto len = reinterpret_cast<size_t *>(size);
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StringCharReplacer(text, len, "^n", 2, ' ');
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//|晒[さら]
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std::string result = std::string((char*)data,*len);
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result = std::regex_replace(result, std::regex("\\|(.+?)\\[(.+?)\\]"), "$1");
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return write_string_overwrite(data,len,result);
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}
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bool InsertCodeXHook()
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{
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/*
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* Sample games:
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* https://vndb.org/v41664
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* https://vndb.org/v36122
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*/
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const BYTE bytes[] = {
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0x83, 0xC4, 0x08, // add esp,08 << hook here
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0x8D, 0x85, XX4, // lea eax,[ebp-00000218]
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0x50, // push eax
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0x68, XX4, // push ???????????!.exe+10A76C
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0x85, 0xF6, // test esi,esi
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0x74, 0x4F, // je ???????????!.exe+2A95B
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0xFF, 0x15, XX4, // call dword ptr [???????????!.exe+C8140]
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0x8B, 0x85, XX4 // mov eax,[ebp-00000220] << alternative hook here
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};
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ULONG range = min(processStopAddress - processStartAddress, MAX_REL_ADDR);
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ULONG addr = MemDbg::findBytes(bytes, sizeof(bytes), processStartAddress, processStartAddress + range);
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if (!addr) {
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ConsoleOutput("CodeX: pattern not found");
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return false;
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}
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HookParam hp;
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hp.address = addr;
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hp.offset=get_reg(regs::eax);
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hp.index = 0;
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hp.type = USING_STRING;
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hp.filter_fun = CodeXFilter;
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ConsoleOutput("INSERT CodeX");
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return NewHook(hp, "CodeX");
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}
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namespace{
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bool hook(){
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//霞外籠逗留記
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BYTE _[]={0x90,0x90,0x68,0x64,0x7B,0x4C,0x00}; //aHdL db 'hd{L',0
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ULONG addr = MemDbg::findBytes(_, sizeof(_), processStartAddress, processStopAddress);
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if(addr==0)return false;
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addr+=2;
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BYTE bytes[]={0x68,XX4};
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memcpy(bytes+1,&addr,4);
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auto addrs = Util::SearchMemory(bytes, sizeof(bytes), PAGE_EXECUTE, processStartAddress, processStopAddress);
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bool succ=false;
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for(auto adr:addrs){
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adr=MemDbg::findEnclosingAlignedFunction(adr);
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if(adr==0)continue;
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HookParam hp;
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hp.address = adr;
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hp.offset=get_stack(1);
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hp.type = CODEC_ANSI_BE;
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succ|=NewHook(hp, "CodeX");
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}
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return succ;
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}
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}
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bool CodeX::attach_function() {
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return InsertCodeXHook()||hook();
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}
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