mirror of
https://github.com/HIllya51/LunaHook.git
synced 2024-11-28 00:04:03 +08:00
70 lines
3.1 KiB
C++
70 lines
3.1 KiB
C++
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#include"LovaGame.h"
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bool LovaGame::attach_function(){
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return false;
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#if 0
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/** 7/19/2015: Game engine specific for http://lova.jp
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*
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* No idea why hooking to this place will crash the game.
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*
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* Debugging method:
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* - Find text in UTF8/UTF16
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* There is one UTF8 matched, and 2 UTF16
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* - Use virtual machine to find where UTF8 is MODIFIED
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* It is modified in msvcrt
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* - Backtrack the stack to find where text is accessed in main module
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*
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* Base addr = 05f0000
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*
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* 012FF246 C64418 08 00 MOV BYTE PTR DS:[EAX+EBX+0x8],0x0
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* 012FF24B C740 04 01000000 MOV DWORD PTR DS:[EAX+0x4],0x1
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* 012FF252 8918 MOV DWORD PTR DS:[EAX],EBX
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* 012FF254 8BF0 MOV ESI,EAX
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* 012FF256 8B45 08 MOV EAX,DWORD PTR SS:[EBP+0x8]
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* 012FF259 53 PUSH EBX
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* 012FF25A 50 PUSH EAX
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* 012FF25B 8D4E 08 LEA ECX,DWORD PTR DS:[ESI+0x8]
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* 012FF25E 51 PUSH ECX
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* 012FF25F E8 CEAE2A00 CALL .015AA132 ; JMP to msvcr100.memcpy, copied here
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* 012FF264 8B07 MOV EAX,DWORD PTR DS:[EDI]
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* 012FF266 83E0 03 AND EAX,0x3
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* 012FF269 0BF0 OR ESI,EAX
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* 012FF26B 83C4 0C ADD ESP,0xC
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* 012FF26E 8937 MOV DWORD PTR DS:[EDI],ESI
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* 012FF270 8B75 FC MOV ESI,DWORD PTR SS:[EBP-0x4]
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*/
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ULONG processStartAddress, processStopAddress;
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if (!FillRange(processName,&startAddress, &stopAddress)) { // need accurate stopAddress
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ConsoleOutput("LOVA: failed to get memory range");
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return false;
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}
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const BYTE bytes[] = {
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0xC6,0x44,0x18, 0x08, 0x00, // 012FF246 C64418 08 00 MOV BYTE PTR DS:[EAX+EBX+0x8],0x0
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0xC7,0x40, 0x04, 0x01,0x00,0x00,0x00, // 012FF24B C740 04 01000000 MOV DWORD PTR DS:[EAX+0x4],0x1
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0x89,0x18, // 012FF252 8918 MOV DWORD PTR DS:[EAX],EBX
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0x8B,0xF0, // 012FF254 8BF0 MOV ESI,EAX
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0x8B,0x45, 0x08, // 012FF256 8B45 08 MOV EAX,DWORD PTR SS:[EBP+0x8]
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0x53, // 012FF259 53 PUSH EBX
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0x50, // 012FF25A 50 PUSH EAX
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0x8D,0x4E, 0x08, // 012FF25B 8D4E 08 LEA ECX,DWORD PTR DS:[ESI+0x8]
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0x51, // 012FF25E 51 PUSH ECX
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0xE8 //CEAE2A00 // 012FF25F E8 CEAE2A00 CALL .015AA132 ; JMP to msvcr100.memcpy, copied here
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};
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enum { addr_offset = sizeof(bytes) - 1 };
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ULONG addr = MemDbg::findBytes(bytes, sizeof(bytes), processStartAddress, processStopAddress);
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if (!addr) {
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ConsoleOutput("LOVA: could not find instruction pattern");
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return false;
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}
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HookParam hp;
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hp.address = addr + addr_offset;
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//hp.text_fun = SpecialGameHookLova;
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hp.offset=get_stack(2); // source in arg2
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hp.type = USING_STRING|RELATIVE_SPLIT;
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ConsoleOutput("INSERT LOVA");
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return NewHook(hp, "LOVA");
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#endif
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}
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