mirror of
https://github.com/HIllya51/LunaHook.git
synced 2024-11-24 06:15:35 +08:00
365 lines
11 KiB
C++
365 lines
11 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
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{
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// https://vndb.org/v23666
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//(18禁ゲーム) [180928] [INTERHEART glossy] はらかつ！3 ～子作りビジネス廃業の危機！？～ (iso+mds+rr3)
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// https://vndb.org/v47957
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//[240222][1261652][DESSERT Soft] 二股野郎とパパ活姉妹 パッケージ版 (mdf+mds)
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// https://vndb.org/v20368
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//[170224] [Sweet HEART] アイドル★クリニック 恋の薬でHな処方 (iso+mds+rr3)
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bool filter(LPVOID data, size_t *size, HookParam *)
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{
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StringFilter((char *)data, size, "$L", 2);
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StringFilter((char *)data, size, "$M", 2);
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StringFilter((char *)data, size, "$S", 2);
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StringFilterBetween((char *)data, size, "[", 1, "]", 1);
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StringFilterBetween((char *)data, size, "&", 1, ";", 1);
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return true;
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// else
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// {
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// v18 = *v16++;
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// switch ( v18 )
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// {
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// case '$':
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// switch ( *v16 )
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// {
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// case 0:
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// goto LABEL_44;
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// case 76:
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// v15 = 3;
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// break;
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// case 77:
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// if ( v15 < 2 )
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// v15 = 2;
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// break;
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// default:
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// if ( *v16 == 83 && !v15 )
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// v15 = 1;
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// break;
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// }
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// break;
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// case '[':
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// for ( i = *v16; i; i = *++v16 )
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// {
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// if ( i == 93 )
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// break;
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// }
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// break;
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// case '&':
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// for ( j = *v16; j; j = *++v16 )
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// {
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// if ( j == 59 )
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// break;
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// }
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// break;
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// default:
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// goto LABEL_43;
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// }
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// ++v16;
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// }
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}
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uintptr_t hh()
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{
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// void __usercall sub_425580(char *a1@<edx>, int a2@<ecx>, int a3)
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BYTE bytes[] = {
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//clang-format off
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0x3c, 0x24,
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0x75, XX,
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0x80, 0x7e, 0x01, 0x00,
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0x74, XX,
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0x83, XX, 0x02,
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0x83, XX, 0x02,
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//clang-format on
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};
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auto addr = MemDbg::findBytes(bytes, sizeof(bytes), processStartAddress, processStopAddress);
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if (!addr)
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return 0;
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addr = findfuncstart(addr, 0x400);
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return addr;
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}
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}
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namespace
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{ // 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)
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{ // 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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uintptr_t __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)
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{ // push ebp, mov ebp,esp, sub esp,*
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return j;
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}
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return 0;
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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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auto addr1 = hh(); // 新版本的candy，但是有时会和旧版在同一个地址。当是同一个地址时，避让5个字节
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auto addr2 = __InsertCandyHook2();
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HookParam hp;
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hp.type = USING_STRING;
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hp.filter_fun = filter;
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if (addr2 == 0 && addr1 == 0)
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return false;
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else if (addr2 == 0 && addr1 != 0)
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{
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hp.address = addr1;
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hp.offset = get_reg(regs::edx);
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return NewHook(hp, "SystemC");
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}
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else if (addr2 != 0 && addr1 == 0)
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{
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hp.address = addr2;
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hp.offset = get_stack(1); // jichi: text in arg1
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return NewHook(hp, "SystemC");
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}
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else
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{
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if (addr1 == addr2)
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{
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addr1 += 5;
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}
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hp.address = addr1;
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hp.offset = get_reg(regs::edx);
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auto succ = NewHook(hp, "SystemC");
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hp.address = addr2;
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hp.offset = get_stack(1);
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succ |= NewHook(hp, "SystemC");
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return succ;
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}
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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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{
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bool candy3()
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{
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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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for (auto addr : Util::SearchMemory(bytes, sizeof(bytes), PAGE_EXECUTE))
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{
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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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{
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addr = MemDbg::findEnclosingAlignedFunction(addr);
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if (addr == 0)
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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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return false;
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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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// 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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{
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// return InsertCandyHook2();
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bool b2 = InsertCandyHook2();
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b2 |= InsertCandyHook3();
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return b2;
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}
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}
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namespace
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{
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bool willowsoft()
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{
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const BYTE bytes[] = {
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// https://vndb.org/v5761
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// まません
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0xA1, XX4,
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0x89, 0x45, 0xF8,
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0x83, 0x7D, 0xF8, 0x10,
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0x74, XX,
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0x83, 0x7D, 0xF8, 0x18,
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0x74, XX,
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0x83, 0x7D, 0xF8, 0x20,
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0x74, XX};
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auto addr = MemDbg::findBytes(bytes, sizeof(bytes), processStartAddress, processStopAddress);
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if (addr == 0)
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return false;
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addr = MemDbg::findEnclosingAlignedFunction(addr, 0x20);
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if (addr == 0)
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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 = USING_STRING;
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hp.address = addr;
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return NewHook(hp, "WillowSoft");
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}
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}
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bool Candy::attach_function()
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{
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auto b1 = InsertCandyHook();
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if (b1)
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PcHooks::hookOtherPcFunctions();
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else
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{
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b1 = b1 || willowsoft();
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if (!b1)
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PcHooks::hookOtherPcFunctions();
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}
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return b1;
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}
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bool WillowSoft::attach_function()
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{
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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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auto addr = MemDbg::findBytes(bytes, sizeof(bytes), processStartAddress, processStopAddress);
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if (addr == 0)
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return false;
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addr = MemDbg::findEnclosingAlignedFunction(addr);
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if (addr == 0)
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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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} |