mirror of
https://github.com/HIllya51/LunaHook.git
synced 2024-12-26 21:24:12 +08:00
401 lines
14 KiB
C++
401 lines
14 KiB
C++
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#include"Circus2.h"
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#include"embed_util.h"
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namespace{
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bool filter(void* data, size_t* len, HookParam* hp){
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if (strstr((char*)data,"@i")||strstr((char*)data,"@y"))return false;
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//｛てんきゅう／天穹｝
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if(strstr((char*)data,"\x81\x6f")&&strstr((char*)data,"\x81\x5e")&&strstr((char*)data,"\x81\x70")){
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StringFilter((char*)data, len, "\x81\x70", 2);
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StringFilterBetween((char*)data,len, "\x81\x6f", 2, "\x81\x5e", 2);
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}
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return true;
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};
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}
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/**
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* jichi 6/5/2014: Sample function from DC3 at 0x4201d0
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* 004201ce cc int3
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* 004201cf cc int3
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* 004201d0 /$ 8b4c24 08 mov ecx,dword ptr ss:[esp+0x8]
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* 004201d4 |. 8a01 mov al,byte ptr ds:[ecx]
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* 004201d6 |. 84c0 test al,al
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* 004201d8 |. 74 1c je short dc3.004201f6
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* 004201da |. 8b5424 04 mov edx,dword ptr ss:[esp+0x4]
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* 004201de |. 8bff mov edi,edi
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* 004201e0 |> 3c 24 /cmp al,0x24
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* 004201e2 |. 75 05 |jnz short dc3.004201e9
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* 004201e4 |. 83c1 02 |add ecx,0x2
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* 004201e7 |. eb 04 |jmp short dc3.004201ed
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* 004201e9 |> 8802 |mov byte ptr ds:[edx],al
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* 004201eb |. 42 |inc edx
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* 004201ec |. 41 |inc ecx
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* 004201ed |> 8a01 |mov al,byte ptr ds:[ecx]
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* 004201ef |. 84c0 |test al,al
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* 004201f1 |.^75 ed \jnz short dc3.004201e0
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* 004201f3 |. 8802 mov byte ptr ds:[edx],al
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* 004201f5 |. c3 retn
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* 004201f6 |> 8b4424 04 mov eax,dword ptr ss:[esp+0x4]
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* 004201fa |. c600 00 mov byte ptr ds:[eax],0x0
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* 004201fd \. c3 retn
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*/
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bool InsertCircusHook2() // jichi 10/2/2013: Change return type to bool
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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) == 0x75243c) { // cmp al, 24; je
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if (DWORD j = SafeFindEnclosingAlignedFunction(i, 0x80)) {
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HookParam hp;
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hp.address = j;
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hp.offset=get_stack(2);
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//hp.filter_fun = CharNewLineFilter; // \n\s* is used to remove new line
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hp.type = USING_STRING;
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//GROWL_DWORD(hp.address); // jichi 6/5/2014: 0x4201d0 for DC3
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//RegisterEngineType(ENGINE_CIRCUS);
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return NewHook(hp, "Circus");
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}
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break;
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}
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//ConsoleOutput("Unknown CIRCUS engine.");
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ConsoleOutput("CIRCUS: failed");
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return false;
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}
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namespace{
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bool c2(){
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//D.C.III Dream Days～ダ・カーポIII～ドリームデイズ
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auto entry=Util::FindImportEntry(processStartAddress,(DWORD)GetGlyphOutlineA);
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DWORD funcaddr=0;
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if(entry==0)return false;
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for (auto addr : Util::SearchMemory(&entry, 4, PAGE_EXECUTE, processStartAddress, processStopAddress) ) {
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DWORD _=0xCCCCCCCC;
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funcaddr=reverseFindBytes((BYTE*)&_,4,addr-0x1000,addr);
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//funcaddr=MemDbg::findEnclosingAlignedFunction(addr,0x1000);ConsoleOutput("%p",funcaddr);
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}
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if(funcaddr==0)return false;
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funcaddr+=4;
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HookParam hp;
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hp.address = funcaddr;
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hp.offset=get_stack(2);
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hp.type = USING_STRING;//|EMBED_ABLE|EMBED_BEFORE_SIMPLE|EMBED_AFTER_NEW|EMBED_DYNA_SJIS;
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//hp.hook_font=F_GetGlyphOutlineA;
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//it will split a long to many lines
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hp.filter_fun=filter;
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return NewHook(hp, "Circus2");
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}
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}
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namespace { // unnamed
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// Skip leading tags such as @K and @c5
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template <typename strT>
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strT ltrim(strT s)
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{
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if (s && *s == '@')
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while ((signed char)*++s > 0);
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return s;
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}
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namespace ScenarioHook {
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namespace Private {
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DWORD nameReturnAddress_,
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scenarioReturnAddress_;
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/**
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* Sample game: DC3, function: 0x4201d0
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*
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* IDA: sub_4201D0 proc near
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* - arg_0 = dword ptr 4
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* - arg_4 = dword ptr 8
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*
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* Observations:
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* - arg1: LPVOID, pointed to unknown object
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* - arg2: LPCSTR, the actual text
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*
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* Example runtime stack:
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* 0012F15C 0040C208 RETURN to .0040C208 from .00420460
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* 0012F160 0012F7CC ; jichi: unknown stck
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* 0012F164 0012F174 ; jichi: text
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* 0012F168 0012F6CC
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* 0012F16C 0012F7CC
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* 0012F170 0012F7CC
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*/
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void hookafter(hook_stack*s,void* data, size_t len){
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auto newData =std::string((char*)data,len);
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LPCSTR text = (LPCSTR)s->stack[2], // arg2
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trimmedText = ltrim(text);
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if (trimmedText != text)
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newData.insert(0,std::string(text, trimmedText - text));
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auto ss=new char[newData.size()+1];
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strcpy(ss,newData.c_str());
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s->stack[2] =(ULONG)ss; // reset arg2
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}
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bool hookBefore(hook_stack*s,void* data, size_t* len,uintptr_t*role)
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{
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LPCSTR text = (LPCSTR)s->stack[2], // arg2
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trimmedText = ltrim(text);
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if (!trimmedText || !*trimmedText)
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return false;
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auto retaddr = s->stack[0]; // retaddr
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* role = retaddr == scenarioReturnAddress_ ? Engine::ScenarioRole :
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retaddr == nameReturnAddress_ ? Engine::NameRole :
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Engine::OtherRole;
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//s->ebx? Engine::OtherRole : // other threads ebx is not zero
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//// 004201e4 |. 83c1 02 |add ecx,0x2
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//// 004201e7 |. eb 04 |jmp short dc3.004201ed
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//*(BYTE *)(retaddr + 3) == 0xe9 // old name
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//? Engine::NameRole : // retaddr+3 is jmp
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//Engine::ScenarioRole;
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std::string oldData = trimmedText;
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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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// Alternatively, using the following pattern bytes also works:
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//
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// 3c24750583c102eb0488024241
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//
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// 004201e0 |> 3c 24 /cmp al,0x24
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// 004201e2 |. 75 05 |jnz short dc3.004201e9
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// 004201e4 |. 83c1 02 |add ecx,0x2
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// 004201e7 |. eb 04 |jmp short dc3.004201ed
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// 004201e9 |> 8802 |mov byte ptr ds:[edx],al
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// 004201eb |. 42 |inc edx
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// 004201ec |. 41 |inc ecx
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ULONG findFunctionAddress(ULONG startAddress, ULONG stopAddress) // find the function to hook
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{
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//return 0x4201d0; // DC3 function address
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for (ULONG i = startAddress + 0x1000; i < stopAddress -4; i++)
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// * 004201e0 |> 3c 24 /cmp al,0x24
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// * 004201e2 |. 75 05 |jnz short dc3.004201e9
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if ((*(ULONG *)i & 0xffffff) == 0x75243c) { // cmp al, 24; je
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enum { range = 0x80 }; // the range is small, since it is a small function
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if (ULONG addr = MemDbg::findEnclosingAlignedFunction(i, range))
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return addr;
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}
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return 0;
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}
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} // namespace Private
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/**
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* jichi 6/5/2014: Sample function from DC3 at 0x4201d0
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*
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* Sample game: DC3PP
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* 0042CE1E 68 E0F0B700 PUSH .00B7F0E0
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* 0042CE23 A3 0C824800 MOV DWORD PTR DS:[0x48820C],EAX
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* 0042CE28 E8 A352FFFF CALL .004220D0 ; jichi: name thread
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* 0042CE2D C705 08024D00 01>MOV DWORD PTR DS:[0x4D0208],0x1
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* 0042CE37 EB 52 JMP SHORT .0042CE8B
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* 0042CE39 392D 08024D00 CMP DWORD PTR DS:[0x4D0208],EBP
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* 0042CE3F 74 08 JE SHORT .0042CE49
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* 0042CE41 392D 205BB900 CMP DWORD PTR DS:[0xB95B20],EBP
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* 0042CE47 74 07 JE SHORT .0042CE50
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* 0042CE49 C605 E0F0B700 00 MOV BYTE PTR DS:[0xB7F0E0],0x0
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* 0042CE50 8D5424 40 LEA EDX,DWORD PTR SS:[ESP+0x40]
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* 0042CE54 52 PUSH EDX
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* 0042CE55 68 30B5BA00 PUSH .00BAB530
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* 0042CE5A 892D 08024D00 MOV DWORD PTR DS:[0x4D0208],EBP
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* 0042CE60 E8 6B52FFFF CALL .004220D0 ; jichi: scenario thread
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* 0042CE65 C705 A0814800 FF>MOV DWORD PTR DS:[0x4881A0],-0x1
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* 0042CE6F 892D 2C824800 MOV DWORD PTR DS:[0x48822C],EBP
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*
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* Sample game: 水夏弐律
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*
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* 004201ce cc int3
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* 004201cf cc int3
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* 004201d0 /$ 8b4c24 08 mov ecx,dword ptr ss:[esp+0x8]
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* 004201d4 |. 8a01 mov al,byte ptr ds:[ecx]
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* 004201d6 |. 84c0 test al,al
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* 004201d8 |. 74 1c je short dc3.004201f6
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* 004201da |. 8b5424 04 mov edx,dword ptr ss:[esp+0x4]
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* 004201de |. 8bff mov edi,edi
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* 004201e0 |> 3c 24 /cmp al,0x24
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* 004201e2 |. 75 05 |jnz short dc3.004201e9
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* 004201e4 |. 83c1 02 |add ecx,0x2
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* 004201e7 |. eb 04 |jmp short dc3.004201ed
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* 004201e9 |> 8802 |mov byte ptr ds:[edx],al
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* 004201eb |. 42 |inc edx
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* 004201ec |. 41 |inc ecx
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* 004201ed |> 8a01 |mov al,byte ptr ds:[ecx]
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* 004201ef |. 84c0 |test al,al
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* 004201f1 |.^75 ed \jnz short dc3.004201e0
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* 004201f3 |. 8802 mov byte ptr ds:[edx],al
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* 004201f5 |. c3 retn
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* 004201f6 |> 8b4424 04 mov eax,dword ptr ss:[esp+0x4]
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* 004201fa |. c600 00 mov byte ptr ds:[eax],0x0
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* 004201fd \. c3 retn
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*
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* Sample registers:
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* EAX 0012F998
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* ECX 000000DB
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* EDX 00000059
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* EBX 00000000 ; ebx is zero for name/scenario thread
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* ESP 0012F96C
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* EBP 00000003
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* ESI 00000025
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* EDI 000000DB
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* EIP 022C0000
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*
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* EAX 0012F174
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* ECX 0012F7CC
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* EDX FDFBF80C
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* EBX 0012F6CC
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* ESP 0012F15C
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* EBP 0012F5CC
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* ESI 800000DB
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* EDI 00000001
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* EIP 00420460 .00420460
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*
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* EAX 0012F174
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* ECX 0012F7CC
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* EDX FDFBF7DF
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* EBX 0012F6CC
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* ESP 0012F15C
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* EBP 0012F5CC
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* ESI 00000108
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* EDI 00000001
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* EIP 00420460 .00420460
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*
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* 0042DC5D 52 PUSH EDX
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* 0042DC5E 68 E038AC00 PUSH .00AC38E0 ; ASCII "Ami"
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* 0042DC63 E8 F827FFFF CALL .00420460 ; jichi: name thread
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* 0042DC68 83C4 08 ADD ESP,0x8
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* 0042DC6B E9 48000000 JMP .0042DCB8
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* 0042DC70 83FD 58 CMP EBP,0x58
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* 0042DC73 74 07 JE SHORT .0042DC7C
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* 0042DC75 C605 E038AC00 00 MOV BYTE PTR DS:[0xAC38E0],0x0
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* 0042DC7C 8D4424 20 LEA EAX,DWORD PTR SS:[ESP+0x20]
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* 0042DC80 50 PUSH EAX
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* 0042DC81 68 0808AF00 PUSH .00AF0808
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* 0042DC86 E8 D527FFFF CALL .00420460 ; jichi: scenario thread
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* 0042DC8B 83C4 08 ADD ESP,0x8
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* 0042DC8E 33C0 XOR EAX,EAX
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* 0042DC90 C705 D0DF4700 FF>MOV DWORD PTR DS:[0x47DFD0],-0x1
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* 0042DC9A A3 0CE04700 MOV DWORD PTR DS:[0x47E00C],EAX
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* 0042DC9F A3 940EB200 MOV DWORD PTR DS:[0xB20E94],EAX
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* 0042DCA4 A3 2C65AC00 MOV DWORD PTR DS:[0xAC652C],EAX
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* 0042DCA9 C705 50F9AC00 59>MOV DWORD PTR DS:[0xACF950],0x59
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* 0042DCB3 A3 3C70AE00 MOV DWORD PTR DS:[0xAE703C],EAX
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*/
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bool attach(ULONG startAddress, ULONG stopAddress)
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{
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ULONG addr = Private::findFunctionAddress(startAddress, stopAddress);
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if (!addr)
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return false;
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// Find the nearest two callers (distance within 100)
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ULONG lastCall = 0;
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auto fun = [&lastCall](ULONG call) -> bool {
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// scenario: 0x42b78c
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// name: 0x42b754
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if (call - lastCall < 100) {
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Private::scenarioReturnAddress_ = call + 5;
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|||
|
|
Private::nameReturnAddress_ = lastCall + 5;
|
|||
|
|
return false; // found target
|
|||
|
|
}
|
|||
|
|
lastCall = call;
|
|||
|
|
return true; // replace all functions
|
|||
|
|
};
|
|||
|
|
MemDbg::iterNearCallAddress(fun, addr, startAddress, stopAddress);
|
|||
|
|
if (!Private::scenarioReturnAddress_ && lastCall) {
|
|||
|
|
Private::scenarioReturnAddress_ = lastCall + 5;
|
|||
|
|
}
|
|||
|
|
HookParam hp;
|
|||
|
|
hp.address=addr;
|
|||
|
|
hp.filter_fun=filter;
|
|||
|
|
hp.hook_before=Private::hookBefore;
|
|||
|
|
hp.hook_after=Private::hookafter;
|
|||
|
|
hp.hook_font=F_GetGlyphOutlineA;
|
|||
|
|
hp.type=USING_STRING|EMBED_ABLE|NO_CONTEXT|EMBED_DYNA_SJIS;
|
|||
|
|
|
|||
|
|
|
|||
|
|
return NewHook(hp,"EmbedCircus");
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
} // namespace ScenarioHook
|
|||
|
|
|
|||
|
|
} // unnamed namespace
|
|||
|
|
bool InsertCircusHook3()
|
|||
|
|
{
|
|||
|
|
/*
|
|||
|
|
* Sample games:
|
|||
|
|
* https://vndb.org/v20218
|
|||
|
|
*/
|
|||
|
|
const BYTE bytes[] = {
|
|||
|
|
0xCC, // int 3
|
|||
|
|
0x81, 0xEC, XX4, // sub esp,000004E0 << hook here
|
|||
|
|
0xA1, XX4, // mov eax,[DSIF.EXE+AD288]
|
|||
|
|
0x33, 0xC4, // xor eax,esp
|
|||
|
|
0x89, 0x84, 0x24, XX4, // mov [esp+000004DC],eax
|
|||
|
|
0x8B, 0x84, 0x24, XX4, // mov eax,[esp+000004E4]
|
|||
|
|
0x53, // push ebx
|
|||
|
|
0x55, // push ebp
|
|||
|
|
0x56, // push esi
|
|||
|
|
0x8B, 0xB4, 0x24, XX4 // mov esi,[esp+000004F4]
|
|||
|
|
};
|
|||
|
|
ULONG range = min(processStopAddress - processStartAddress, MAX_REL_ADDR);
|
|||
|
|
ULONG addr = MemDbg::findBytes(bytes, sizeof(bytes), processStartAddress, processStartAddress + range);
|
|||
|
|
if (!addr) {
|
|||
|
|
return false;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
HookParam hp;
|
|||
|
|
hp.address = addr + 1;
|
|||
|
|
hp.offset=get_reg(regs::esi);
|
|||
|
|
hp.split = get_reg(regs::ecx);
|
|||
|
|
hp.type = USING_STRING | USING_SPLIT;
|
|||
|
|
return NewHook(hp, "Circus3");
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
bool CircusFilter(LPVOID data, size_t *size, HookParam *)
|
|||
|
|
{
|
|||
|
|
auto text = reinterpret_cast<LPSTR>(data);
|
|||
|
|
auto len = reinterpret_cast<size_t *>(size);
|
|||
|
|
|
|||
|
|
//ConsoleOutput("debug:Circus: -%.*s-", *len, text);
|
|||
|
|
if (*len <= 1 || cpp_strnstr(text, "\\", *len) || (text[0] == '&' && text[1] == 'n'))
|
|||
|
|
return false;
|
|||
|
|
|
|||
|
|
CharReplacer(text, len, '\n', ' ');
|
|||
|
|
|
|||
|
|
return true;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
bool InsertCircusHook4()
|
|||
|
|
{
|
|||
|
|
/*
|
|||
|
|
* Sample games:
|
|||
|
|
* https://vndb.org/r46909
|
|||
|
|
*/
|
|||
|
|
const BYTE bytes[] = {
|
|||
|
|
0x83, 0xF8, 0xFF, // cmp eax,-01 << hook here
|
|||
|
|
0x0F, 0x84, XX4, // je DST.exe+1BCF0
|
|||
|
|
0x8B, 0x0D, XX4 // mov ecx,[DST.exe+A41F0]
|
|||
|
|
};
|
|||
|
|
ULONG range = min(processStopAddress - processStartAddress, MAX_REL_ADDR);
|
|||
|
|
ULONG addr = MemDbg::findBytes(bytes, sizeof(bytes), processStartAddress, processStartAddress + range);
|
|||
|
|
if (!addr) {
|
|||
|
|
return false;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
HookParam hp;
|
|||
|
|
hp.address = addr;
|
|||
|
|
hp.offset=get_reg(regs::edx);
|
|||
|
|
hp.split =get_stack(4); //arg4
|
|||
|
|
hp.padding = 0x40;
|
|||
|
|
hp.type = USING_STRING | USING_SPLIT;
|
|||
|
|
hp.filter_fun = CircusFilter;
|
|||
|
|
|
|||
|
|
return NewHook(hp, "Circus4");
|
|||
|
|
}
|
|||
|
|
bool Circus2::attach_function() {
|
|||
|
|
bool ch2=InsertCircusHook2();
|
|||
|
|
bool _1= ch2||c2();
|
|||
|
|
bool _2=ch2|| InsertCircusHook3() || InsertCircusHook4();
|
|||
|
|
bool embed=ScenarioHook::attach(processStartAddress,processStopAddress);
|
|||
|
|
return _1||embed||_2;
|
|||
|
|
}
|