mirror of
https://github.com/HIllya51/LunaHook.git
synced 2024-11-25 06:45:36 +08:00
219 lines
8.4 KiB
C++
219 lines
8.4 KiB
C++
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#include"Mink.h"
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/** 12/23/2014 jichi: Mink games (not sure the engine name)
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* Sample game:
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* - [130111] [Mink EGO] お<EFBFBD>ちも<EFBFBD>にはぜったい言えなぁ<EFBFBD>ぁ<EFBFBD>つなこと<EFBFBD>-- /HB-4*0:64@45164A
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* - [141219] [Mink] しすた<EFBFBD>・すきーむ3
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*
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* Observations from sisters3:
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* - GetGlyphOutlineA can get text, but it is cached.
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* - It's caller's first argument is the correct text, but I failed to find where it is called
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* - Debugging text in memory caused looping
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*
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* /HB-4*0:64@45164A
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* - addr: 0x45164a
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* - length_offset: 1
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* - split: 0x64
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* - off: 0xfffffff8 = -8
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* - type: 0x18
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*
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* Observations from Onechan:
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* - There are lots of threads
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* - The one with -1 split value is correct, but not sure for all games
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* - The result texts still contain garbage, but can be split using return values.
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*
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* 00451611 e9 ee000000 jmp .00451704
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* 00451616 8b45 0c mov eax,dword ptr ss:[ebp+0xc]
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* 00451619 3bc3 cmp eax,ebx
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* 0045161b 75 2b jnz short .00451648
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* 0045161d e8 a9340000 call .00454acb
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* 00451622 53 push ebx
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* 00451623 53 push ebx
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* 00451624 53 push ebx
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* 00451625 53 push ebx
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* 00451626 53 push ebx
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* 00451627 c700 16000000 mov dword ptr ds:[eax],0x16
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* 0045162d e8 16340000 call .00454a48
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* 00451632 83c4 14 add esp,0x14
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* 00451635 385d f4 cmp byte ptr ss:[ebp-0xc],bl
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* 00451638 74 07 je short .00451641
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* 0045163a 8b45 f0 mov eax,dword ptr ss:[ebp-0x10]
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* 0045163d 8360 70 fd and dword ptr ds:[eax+0x70],0xfffffffd
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* 00451641 33c0 xor eax,eax
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* 00451643 e9 bc000000 jmp .00451704
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* 00451648 3818 cmp byte ptr ds:[eax],bl
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* 0045164a 75 14 jnz short .00451660 ; jichi: hook here
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* 0045164c 385d f4 cmp byte ptr ss:[ebp-0xc],bl
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* 0045164f 74 07 je short .00451658
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* 00451651 8b45 f0 mov eax,dword ptr ss:[ebp-0x10]
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* 00451654 8360 70 fd and dword ptr ds:[eax+0x70],0xfffffffd
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* 00451658 8b45 08 mov eax,dword ptr ss:[ebp+0x8]
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* 0045165b e9 a4000000 jmp .00451704
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* 00451660 56 push esi
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* 00451661 8b75 08 mov esi,dword ptr ss:[ebp+0x8]
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* 00451664 3bf3 cmp esi,ebx
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* 00451666 75 28 jnz short .00451690
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* 00451668 e8 5e340000 call .00454acb
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* 0045166d 53 push ebx
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* 0045166e 53 push ebx
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* 0045166f 53 push ebx
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* 00451670 53 push ebx
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* 00451671 53 push ebx
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* 00451672 c700 16000000 mov dword ptr ds:[eax],0x16
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* 00451678 e8 cb330000 call .00454a48
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* 0045167d 83c4 14 add esp,0x14
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* 00451680 385d f4 cmp byte ptr ss:[ebp-0xc],bl
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* 00451683 74 07 je short .0045168c
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* 00451685 8b45 f0 mov eax,dword ptr ss:[ebp-0x10]
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* 00451688 8360 70 fd and dword ptr ds:[eax+0x70],0xfffffffd
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* 0045168c 33c0 xor eax,eax
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* 0045168e eb 73 jmp short .00451703
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* 00451690 57 push edi
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* 00451691 50 push eax
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* 00451692 8bfe mov edi,esi
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* 00451694 e8 a7600000 call .00457740
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* 00451699 8975 f8 mov dword ptr ss:[ebp-0x8],esi
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* 0045169c 2945 f8 sub dword ptr ss:[ebp-0x8],eax
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* 0045169f 56 push esi
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* 004516a0 e8 9b600000 call .00457740
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* 004516a5 0345 f8 add eax,dword ptr ss:[ebp-0x8]
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* 004516a8 59 pop ecx
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* 004516a9 59 pop ecx
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* 004516aa 381e cmp byte ptr ds:[esi],bl
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* 004516ac 74 46 je short .004516f4
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* 004516ae 2b75 0c sub esi,dword ptr ss:[ebp+0xc]
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* 004516b1 3bf8 cmp edi,eax
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* 004516b3 77 3f ja short .004516f4
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* 004516b5 8a17 mov dl,byte ptr ds:[edi]
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* 004516b7 8b4d 0c mov ecx,dword ptr ss:[ebp+0xc]
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* 004516ba 8855 ff mov byte ptr ss:[ebp-0x1],dl
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* 004516bd 3ad3 cmp dl,bl
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* 004516bf 74 11 je short .004516d2
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* 004516c1 8a11 mov dl,byte ptr ds:[ecx]
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* 004516c3 3ad3 cmp dl,bl
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* 004516c5 74 40 je short .00451707
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* 004516c7 38140e cmp byte ptr ds:[esi+ecx],dl
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* 004516ca 75 06 jnz short .004516d2
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* 004516cc 41 inc ecx
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* 004516cd 381c0e cmp byte ptr ds:[esi+ecx],bl
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* 004516d0 ^75 ef jnz short .004516c1
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* 004516d2 3819 cmp byte ptr ds:[ecx],bl
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* 004516d4 74 31 je short .00451707
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* 004516d6 0fb64d ff movzx ecx,byte ptr ss:[ebp-0x1]
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* 004516da 8b55 ec mov edx,dword ptr ss:[ebp-0x14]
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* 004516dd 8a4c11 1d mov cl,byte ptr ds:[ecx+edx+0x1d]
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*/
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#if 0 // hook to the caller of dynamic GetGlyphOutlineA
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/**
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* @param addr function address
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* @param frame real address of the function, supposed to be the same as addr
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* @param stack address of current stack - 4
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* @return If suceess
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*/
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static bool InsertMinkDynamicHook(LPVOID fun, DWORD frame, DWORD stack)
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{
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CC_UNUSED(frame);
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if (fun != ::GetGlyphOutlineA)
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return false;
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DWORD addr = *(DWORD *)(stack + 4);
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if (!addr) {
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ConsoleOutput("Mink: missing function return addr, this should never happen");
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return true;
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}
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addr = MemDbg::findEnclosingAlignedFunction(addr, 0x200); // range is around 0x120
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if (!addr) {
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ConsoleOutput("Mink: failed to caller address");
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return true;
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}
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HookParam hp;
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hp.address = addr; // hook to the beginning of the caller function
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hp.offset =get_stack(1);
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hp.type = CODEC_ANSI_BE;
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return NewHook(hp, "Mink");
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}
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#endif // 0
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static void SpecialHookMink(hook_stack* stack, HookParam *, uintptr_t *data, uintptr_t *split, size_t*len)
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{
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//DWORD addr = *(DWORD *)(esp_base + hp->offset); // default value
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DWORD addr = stack->eax;
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if (!IthGetMemoryRange((LPVOID)(addr), 0, 0))
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return;
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DWORD ch = *(DWORD *)addr;
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DWORD size = LeadByteTable[ch & 0xff]; // Slightly faster than IsDBCSLeadByte
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if (size == 1 && ::ispunct(ch & 0xff)) // skip ascii punctuations, since garbage is like ":text:"
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return;
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*len = size;
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*data = ch;
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// Issue: still have lots of garbage
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*split = stack->stack[25];
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//*split = *(DWORD *)(esp_base + 0x48);
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}
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bool InsertMinkHook()
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{
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const BYTE bytes[] = {
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0x38,0x18, // 00451648 3818 cmp byte ptr ds:[eax],bl
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0x75, 0x14, // 0045164a 75 14 jnz short .00451660 ; jichi: hook here
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0x38,0x5d, 0xf4, // 0045164c 385d f4 cmp byte ptr ss:[ebp-0xc],bl
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0x74, 0x07, // 0045164f 74 07 je short .00451658
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0x8b,0x45, 0xf0, // 00451651 8b45 f0 mov eax,dword ptr ss:[ebp-0x10]
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0x83,0x60, 0x70, 0xfd, // 00451654 8360 70 fd and dword ptr ds:[eax+0x70],0xfffffffd
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0x8b,0x45, 0x08 // 00451658 8b45 08 mov eax,dword ptr ss:[ebp+0x8]
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};
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enum { addr_offset = 2 };
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ULONG addr = MemDbg::findBytes(bytes, sizeof(bytes), processStartAddress, processStopAddress);
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//ULONG addr = 0x45164a;
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//ULONG addr = 0x451648;
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//ULONG addr = 0x4521a8;
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//GROWL_DWORD(addr);
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if (!addr) {
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ConsoleOutput("Mink: 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 + addr_offset;
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hp.offset=get_reg(regs::eax); // -8
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hp.split = 0x64;
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hp.type = USING_SPLIT|DATA_INDIRECT|USING_CHAR; // 0x18
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hp.text_fun = SpecialHookMink;
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ConsoleOutput("INSERT Mink");
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return NewHook(hp, "Mink");
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//ConsoleOutput("Mink: disable GDI hooks");
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//
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}
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bool Mink2::attach_function() {
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const BYTE pattern[] = {
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//破談屋
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//https://vndb.org/v2719
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0xF7,0xC7,0x03,0x00,0x00,0x00,
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0x75,XX,
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0xC1,0xE9,0x02,
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0x83,0xE2,0x03,
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0x83,0xF9,0x08,
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0x72,XX
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};
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bool found=false;
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for (auto addr : Util::SearchMemory(pattern, sizeof(pattern), PAGE_EXECUTE, processStartAddress, processStopAddress))
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{
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addr = MemDbg::findEnclosingAlignedFunction(addr,0x100);
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if (addr == 0)return false;
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HookParam hp;
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hp.address = addr;
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hp.offset=get_stack(2);
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hp.length_offset=3;
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hp.type = USING_STRING;
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found|=NewHook(hp, "Mink");
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}
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return found;
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}
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bool Mink::attach_function() {
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return InsertMinkHook();
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}
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