mirror of
https://github.com/HIllya51/LunaHook.git
synced 2024-12-30 23:14:12 +08:00
215 lines
6.8 KiB
C++
215 lines
6.8 KiB
C++
#include"Candy.h"
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/********************************************************************************************
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CandySoft hook:
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Game folder contains many *.fpk. Engine name is SystemC.
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I haven't seen this engine in other company/brand.
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AGTH /X3 will hook lstrlenA. One thread is the exactly result we want.
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But the function call is difficult to located programmatically.
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I find a equivalent points which is more easy to search.
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The script processing function needs to find 0x5B'[',
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so there should a instruction like cmp reg,5B
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Find this position and navigate to function entry.
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The first parameter is the string pointer.
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This approach works fine with game later than つよきす２学<EFBC92>
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But the original つよき<E38288>is quite different. I handle this case separately.
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********************************************************************************************/
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namespace { // unnamed Candy
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// jichi 8/23/2013: split into two different engines
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//if (_wcsicmp(processName, L"systemc.exe")==0)
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// Process name is "SystemC.exe"
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bool InsertCandyHook1()
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{
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for (DWORD i = processStartAddress + 0x1000; i < processStopAddress - 4; i++)
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if ((*(DWORD *)i&0xffffff) == 0x24f980) // cmp cl,24
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for (DWORD j = i, k = i - 0x100; j > k; j--)
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if (*(DWORD *)j == 0xc0330a8a) { // mov cl,[edx]; xor eax,eax
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HookParam hp;
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hp.address = j;
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hp.offset=get_reg(regs::edx);
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hp.type = USING_STRING;
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ConsoleOutput("INSERT SystemC#1");
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//RegisterEngineType(ENGINE_CANDY);
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return NewHook(hp, "SystemC");
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}
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ConsoleOutput("CandyHook1: failed");
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return false;
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}
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// jichi 8/23/2013: Process name is NOT "SystemC.exe"
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bool InsertCandyHook2()
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{
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for (DWORD i = processStartAddress + 0x1000; i < processStopAddress - 4 ;i++)
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if (*(WORD *)i == 0x5b3c || // cmp al,0x5b
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(*(DWORD *)i & 0xfff8fc) == 0x5bf880) // cmp reg,0x5B
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for (DWORD j = i, k = i - 0x100; j > k; j--)
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if ((*(DWORD *)j & 0xffff) == 0x8b55) { // push ebp, mov ebp,esp, sub esp,*
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HookParam hp;
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hp.address = j;
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if(((*(BYTE *)(j+3)))==0x51) //push ecx ,thiscall
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hp.offset=get_reg(regs::ecx); //アイドルクリニック～恋の薬でHな処方～
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else
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hp.offset=get_stack(1); // jichi: text in arg1
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hp.type = USING_STRING;
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//RegisterEngineType(ENGINE_CANDY);
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return NewHook(hp, "SystemC");
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}
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ConsoleOutput("CandyHook2: failed");
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return false;
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}
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/** jichi 10/2/2013: CHECKPOINT
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*
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* [5/31/2013] 恋もHもお勉強も、おまかせ<E3818B>お姉ちも<E381A1>部
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* base = 0xf20000
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* + シナリオ: /HSN-4@104A48:ANEBU.EXE
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* - off: 4294967288 = 0xfffffff8 = -8
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, - type: 1025 = 0x401
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* + 選択肢: /HSN-4@104FDD:ANEBU.EXE
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* - off: 4294967288 = 0xfffffff8 = -8
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* - type: 1089 = 0x441
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*/
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//bool InsertCandyHook3()
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//{
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// return false; // CHECKPOINT
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// const BYTE ins[] = {
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// 0x83,0xc4, 0x0c, // add esp,0xc ; hook here
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// 0x0f,0xb6,0xc0, // movzx eax,al
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// 0x85,0xc0, // test eax,eax
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// 0x75, 0x0e // jnz XXOO ; it must be 0xe, or there will be duplication
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// };
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// enum { addr_offset = 0 };
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// ULONG range = min(processStopAddress - processStartAddress, MAX_REL_ADDR);
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// ULONG reladdr = SearchPattern(processStartAddress, range, ins, sizeof(ins));
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// reladdr = 0x104a48;
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// GROWL_DWORD(processStartAddress);
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// //GROWL_DWORD3(reladdr, processStartAddress, range);
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// if (!reladdr)
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// return false;
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//
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// HookParam hp;
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// hp.address = processStartAddress + reladdr + addr_offset;
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// hp.offset=get_reg(regs::eax);
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// hp.type = USING_STRING|NO_CONTEXT;
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// NewHook(hp, "Candy");
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// return true;
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//}
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} // unnamed Candy
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namespace{
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bool candy3(){
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//お母さんは俺専用！～あなたの初めてを…母さんが貰ってア・ゲ・ル～
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//茉莉子さん家の性事情 ~伯母さんは僕のモノ~
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const BYTE bytes[] = {
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0x24, //XX||XX2
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0x75
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};
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for (auto addr : Util::SearchMemory(bytes, sizeof(bytes), PAGE_EXECUTE)){
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ConsoleOutput("%x",addr);
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if((*(BYTE*)(addr-1) ==0x3c)||((*(BYTE*)(addr-2) ==0x83)&&(*(BYTE*)(addr-1) ==0xf9))){
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addr=MemDbg::findEnclosingAlignedFunction(addr);
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if(addr==0)continue;
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ConsoleOutput("!%x",addr);
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HookParam hp;
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hp.type = USING_STRING;
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if(*(BYTE*)addr==0x55)
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hp.offset=get_stack(1);
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else if(*(BYTE*)addr==0x56)
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hp.offset=get_reg(regs::eax);
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else
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continue;
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hp.address = addr;
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return NewHook(hp, "candy3");
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}
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}
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return false;
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}
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bool InsertCandyHook3()
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{
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/*
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* Sample games:
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* https://vndb.org/v24878
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*/
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const BYTE bytes[] = {
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0xCC, // int 3
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0x55, // push ebp << hook here
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0x8B, 0xEC, // mov ebp,esp
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0x6A, 0xFF, // push -01
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0x68, XX4, // push iinari-omnibus.exe+C4366
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0x64, 0xA1, 0x00, 0x00, 0x00, 0x00, // mov eax,fs:[00000000]
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0x50, // push eax
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0x83, 0xEC, 0x74, // sub esp,74
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0x53, // push ebx
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0x56, // push esi
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0x57 // push edi
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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("SystemC#3: 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 + 1;
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hp.offset=get_stack(4);
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hp.type = USING_STRING | CODEC_UTF16;
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ConsoleOutput("INSERT SystemC#3");
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return NewHook(hp, "SystemC#3");
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}
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}
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// jichi 10/2/2013: Add new candy hook
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bool InsertCandyHook()
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{
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PcHooks::hookOtherPcFunctions();
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//if (0 == _wcsicmp(processName, L"systemc.exe"))
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if (Util::CheckFile(L"SystemC.exe"))
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return InsertCandyHook1()||candy3();
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else{
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//return InsertCandyHook2();
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bool b2 = InsertCandyHook2(),
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b3 = InsertCandyHook3();
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return b2 || b3;
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}
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}
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bool Candy::attach_function() {
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return InsertCandyHook();
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}
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bool WillowSoft::attach_function(){
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//お母さんがいっぱい!!限定ママBOX
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const BYTE bytes[] = {
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0xF7 ,0xC2 ,0x00 ,0x00 ,0xFF ,0x00,
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XX2,
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0xF7 ,0xC2 ,0x00 ,0x00 ,0x00 ,0xFF ,
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XX2
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};
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auto addr=MemDbg::findBytes(bytes, sizeof(bytes), processStartAddress, processStopAddress);
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if(addr==0)return false;
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addr=MemDbg::findEnclosingAlignedFunction(addr);
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if(addr==0)return false;
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HookParam hp;
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hp.type = USING_STRING;
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hp.offset=get_stack(2);
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hp.type |= DATA_INDIRECT;
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hp.index = 0;
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hp.address = addr;
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return NewHook(hp, "WillowSoft");
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} |