mirror of
https://github.com/HIllya51/LunaHook.git
synced 2024-11-23 22:05:36 +08:00
272 lines
10 KiB
C++
272 lines
10 KiB
C++
#include"Pal.h"
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#include"embed_util.h"
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/** jichi 6/1/2014 AMUSE CRAFT
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* Related brands: http://erogetrailers.com/brand/2047
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* Sample game: 魔女こいにっ<E381AB> * See: http://sakuradite.com/topic/223
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* Sample H-code: /HBN-4*0:18@26159:MAJOKOI_try.exe (need remove context, though)
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*
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* Sample games:
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* - 時計仕掛け<E68E9B>レイライン
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* - きみと僕との騎士の日<E381AE> *
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* /HBN-4*0:18@26159:MAJOKOI_TRY.EXE
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* - addr: 155993
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* - length_offset: 1
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* - module: 104464j455
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* - off: 4294967288 = 0xfffffff8
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* - split: 24 = 0x18
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* - type: 1112 = 0x458
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*
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* Call graph:
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* - hook reladdr: 0x26159, fun reladdr: 26150
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* - scene fun reladdr: 0x26fd0
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* - arg1 and arg3 are pointers
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* - arg2 is the text
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* - scenairo only reladdr: 0x26670
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* Issue for implementing embeded engine: two functions are needed to be hijacked
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*
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* 013c614e cc int3
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* 013c614f cc int3
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* 013c6150 /$ 55 push ebp ; jichi: function starts, this function seems to process text encoding
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* 013c6151 |. 8bec mov ebp,esp
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* 013c6153 |. 8b45 08 mov eax,dword ptr ss:[ebp+0x8]
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* 013c6156 |. 0fb608 movzx ecx,byte ptr ds:[eax]
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* 013c6159 |. 81f9 81000000 cmp ecx,0x81 ; jichi: hook here
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* 013c615f |. 7c 0d jl short majokoi_.013c616e
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* 013c6161 |. 8b55 08 mov edx,dword ptr ss:[ebp+0x8]
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* 013c6164 |. 0fb602 movzx eax,byte ptr ds:[edx]
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* 013c6167 |. 3d 9f000000 cmp eax,0x9f
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* 013c616c |. 7e 1c jle short majokoi_.013c618a
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* 013c616e |> 8b4d 08 mov ecx,dword ptr ss:[ebp+0x8]
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* 013c6171 |. 0fb611 movzx edx,byte ptr ds:[ecx]
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* 013c6174 |. 81fa e0000000 cmp edx,0xe0
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* 013c617a |. 7c 30 jl short majokoi_.013c61ac
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* 013c617c |. 8b45 08 mov eax,dword ptr ss:[ebp+0x8]
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* 013c617f |. 0fb608 movzx ecx,byte ptr ds:[eax]
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* 013c6182 |. 81f9 fc000000 cmp ecx,0xfc
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* 013c6188 |. 7f 22 jg short majokoi_.013c61ac
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* 013c618a |> 8b55 08 mov edx,dword ptr ss:[ebp+0x8]
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* 013c618d |. 0fb642 01 movzx eax,byte ptr ds:[edx+0x1]
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* 013c6191 |. 83f8 40 cmp eax,0x40
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* 013c6194 |. 7c 16 jl short majokoi_.013c61ac
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* 013c6196 |. 8b4d 08 mov ecx,dword ptr ss:[ebp+0x8]
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* 013c6199 |. 0fb651 01 movzx edx,byte ptr ds:[ecx+0x1]
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* 013c619d |. 81fa fc000000 cmp edx,0xfc
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* 013c61a3 |. 7f 07 jg short majokoi_.013c61ac
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* 013c61a5 |. b8 01000000 mov eax,0x1
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* 013c61aa |. eb 02 jmp short majokoi_.013c61ae
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* 013c61ac |> 33c0 xor eax,eax
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* 013c61ae |> 5d pop ebp
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* 013c61af \. c3 retn
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*/
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static bool InsertOldPalHook() // this is used in case the new pattern does not work
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{
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const BYTE bytes[] = {
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0x55, // 013c6150 /$ 55 push ebp ; jichi: function starts
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0x8b,0xec, // 013c6151 |. 8bec mov ebp,esp
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0x8b,0x45, 0x08, // 013c6153 |. 8b45 08 mov eax,dword ptr ss:[ebp+0x8]
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0x0f,0xb6,0x08, // 013c6156 |. 0fb608 movzx ecx,byte ptr ds:[eax]
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0x81,0xf9 //81000000 // 013c6159 |. 81f9 81000000 cmp ecx,0x81 ; jichi: hook here
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};
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enum { addr_offset = sizeof(bytes) - 2 };
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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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//GROWL_DWORD(reladdr); // supposed to be 0x21650
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//GROWL_DWORD(reladdr + addr_offset);
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//reladdr = 0x26159; // 魔女こいにっ<E381AB>trial
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if (!addr) {
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ConsoleOutput("AMUSE CRAFT: 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.type = NO_CONTEXT|USING_SPLIT|DATA_INDIRECT; // 0x418
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//hp.type = NO_CONTEXT|USING_SPLIT|DATA_INDIRECT|RELATIVE_SPLIT; // Use relative address to prevent floating issue
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hp.type = NO_CONTEXT|USING_SPLIT|DATA_INDIRECT;
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hp.offset=get_reg(regs::eax); // eax
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ConsoleOutput("INSERT AMUSE CRAFT");
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return NewHook(hp, "Pal");
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}
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namespace{
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template <typename strT>
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strT trim(strT text, int *size)
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{
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//int length = ::strlen(text);
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auto length = *size;
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if (text[0] == '<' && text[1] == 'c') {
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auto p = ::strchr(text + 2, '>');
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if (!p)
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return text;
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p++;
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length -= p - text;
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text = p; // skip leading '<c .. >'
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}
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if (text[length - 1] == '>' && text[length - 2] == 'c' && text[length - 3] == '/' && text[length - 4] == '<')
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length -= 4; // skip the trailing </c>'
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*size = length;
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return text;
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}
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LPSTR trimmedText;int trimmedSize;
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bool before(hook_stack*s,void* data, size_t* len,uintptr_t*role){
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auto text = (LPSTR)s->stack[2]; // text in arg2
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if (!text || !*text)
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return false;
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int size = ::strlen(text);
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trimmedSize = size;
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trimmedText = trim(text, &trimmedSize);
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if (trimmedSize <= 0 || !trimmedText || !*trimmedText)
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return false;
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auto retaddr = s->stack[0];
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if (*(WORD *)(retaddr - 8) == 0x088b) // 8b08 mov ecx,dword ptr ds:[eax]
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*role = s->stack[3] ? Engine::ScenarioRole : Engine::NameRole;
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std::string oldData(trimmedText, trimmedSize);
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strcpy((char*)data,oldData.c_str());
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*len=oldData.size();
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return true;
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}
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void after(hook_stack*s,void* data, size_t len){
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std::string newData((char*)data, len);
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auto text = (LPSTR)s->stack[2]; // text in arg2
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int prefixSize = trimmedText - text;
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int size = ::strlen(text);
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int suffixSize = size - prefixSize - trimmedSize;
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//if (prefixSize)
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// newData.prepend(text, prefixSize);
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if (suffixSize)
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newData.append(trimmedText + trimmedSize, suffixSize);
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::strcpy(trimmedText, newData.c_str());
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}
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std::string rubyRemove( std::string text) {
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std::regex rx("<r(.*?)>(.*?)</r>");
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text= std::regex_replace(text, rx, "$2");
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std::regex rx2("<c(.*?)>(.*?)</c>");
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text= std::regex_replace(text, rx2, "$2");
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std::regex rx3("<s(.*?)>(.*?)</s>");
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text= std::regex_replace(text, rx3, "$2");
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return text;
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}
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}
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static bool InsertNewPal1Hook()
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{
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//有乱码，无法处理。并且遇到某些中文字符会闪退
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const BYTE bytes[] = {
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0x55, // 002c6ab0 55 push ebp
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0x8b,0xec, // 002c6ab1 8bec mov ebp,esp
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0x83,0xec, 0x78, // 002c6ab3 83ec 78 sub esp,0x78
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0xa1, XX4, // 002c6ab6 a1 8c002f00 mov eax,dword ptr ds:[0x2f008c]
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0x33,0xc5, // 002c6abb 33c5 xor eax,ebp
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0x89,0x45, 0xf8 // 002c6abd 8945 f8 mov dword ptr ss:[ebp-0x8],eax ; mireado : small update
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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("Pal1: 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_stack(2); // arg2
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hp.type = USING_STRING|EMBED_ABLE;
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hp.hook_before=before;
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hp.hook_after=after;
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hp.filter_fun=[](void* data, size_t* len, HookParam* hp){
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auto s=std::string((char*)data,*len);
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s=rubyRemove(s);
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strcpy((LPSTR)data,s.c_str());*len=s.size();
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return true;
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};
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hp.hook_font=F_CreateFontIndirectA|F_CreateFontA;
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ConsoleOutput("INSERT Pal1");
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return NewHook(hp, "Pal");
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}
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// Eguni 2016/11/06
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// Supporting new Pal engine, tested with 恋×シンアイ彼女
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static bool InsertNewPal2Hook()
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{
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const BYTE bytes[] = {
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0x55, // 0124E220 55 push ebp; doesn't works... why?
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0x8b,0xec, // 0124E221 8bec mov ebp,esp
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0x83,0xec, 0x7c, // 0124E223 83ec 7c sub esp,0x7C
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0xa1, XX4, // 0124E226 a1 788D2901 mov eax,dword ptr ds:[0x2f008c]
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0x33,0xc5, // 0124E22B 33c5 xor eax,ebp
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0x89,0x45, 0xfc, // 0124E22D 8945 FC mov dword ptr ss:[ebp-0x8],eax ; mireado : small update
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0xe8 // 0136e230 e8 call 01377800
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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("Pal2: 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_stack(2); // arg2
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hp.type = USING_STRING;
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ConsoleOutput("INSERT Pal2");
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return NewHook(hp, "Pal");
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}
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namespace{
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bool redcheris(){
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const BYTE bytes[] = {
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//int __usercall sub_44E1E0@<eax>(
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// char *a1@<edx>,
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//if ( *(_DWORD *)a1 == 1047683644 )
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0x8B,0x06,
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0x3D,0x3C,0x62,0x72,0x3E ,
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0x75,0x10
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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) return false;
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addr=MemDbg::findEnclosingAlignedFunction(addr);
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if (!addr) return false;
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HookParam hp;
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hp.address = addr;
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hp.offset=get_reg(regs::edx);
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hp.type = USING_STRING|EMBED_ABLE|EMBED_BEFORE_SIMPLE|EMBED_AFTER_NEW;
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//无法编码的字符无法显示，若开启dyna则会直接略过这个字，还不如不开。
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//[230929] [ユニゾンシフト] 恋とHしかしていない！
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hp.newlineseperator=L"<br>";
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hp.filter_fun=[](void* data, size_t* len, HookParam* hp){
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auto s=std::string((char*)data,*len);
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s=rubyRemove(s);
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strcpy((LPSTR)data,s.c_str());*len=s.size();
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return true;
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};
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return NewHook(hp, "Pal");
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}
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}
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bool InsertPalHook() // use Old Pal first, which does not have ruby
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{
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PcHooks::hookOtherPcFunctions();
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auto succ=false;
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for (auto func : { "PalSpriteCreateTextEx","PalSpriteCreateText","PalFontDrawText" }) {
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HookParam hp;
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hp.type = USING_STRING | MODULE_OFFSET | FUNCTION_OFFSET;
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wcscpy_s(hp.module, L"Pal.dll");
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strcpy_s(hp.function, func);
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hp.offset=get_stack(2);
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succ|=NewHook(hp, func);
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}
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bool embed= InsertNewPal1Hook() ;
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bool b1= InsertOldPalHook() || InsertNewPal2Hook();
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bool b2=redcheris();
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return b1||b2||embed||succ;
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}
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bool Pal::attach_function() {
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return InsertPalHook();
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}
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