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恍兮惚兮 2024-12-12 20:59:16 +08:00
parent bdf3ec70aa
commit 8db9c3d36a
1 changed files with 32 additions and 91 deletions
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111
cpp/LunaHook/LunaHook/engine32/Circus2.cpp
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@ -70,18 +70,19 @@ namespace
{
// D.C.III Dream Days～ダ・カーポIII～ドリームデイズ
auto entry = Util::FindImportEntry(processStartAddress, (DWORD)GetGlyphOutlineA);
DWORD funcaddr = 0;
if (entry == 0)
if (!entry)
return false;
for (auto addr : Util::SearchMemory(&entry, 4, PAGE_EXECUTE, processStartAddress, processStopAddress))
{
auto addrs = Util::SearchMemory(&entry, 4, PAGE_EXECUTE, processStartAddress, processStopAddress);
if (!addrs.size())
return false;
auto addr = addrs[addrs.size() - 1];
DWORD _ = 0xCCCCCCCC;
funcaddr = reverseFindBytes((BYTE *)&_, 4, addr - 0x1000, addr);
// funcaddr=MemDbg::findEnclosingAlignedFunction(addr,0x1000);ConsoleOutput("%p",funcaddr);
}
if (funcaddr == 0)
return false;
funcaddr += 4;
BYTE SIG[] = {0x8B, 0xB4, 0x24, XX2, 0x00, 0x00, 0x80, 0x3E, 0x00};
auto funcaddr = reverseFindBytes((BYTE *)&_, 4, addr - 0x1000, addr, 4, true);
auto funcaddr2 = reverseFindBytes(SIG, sizeof(SIG), addr - 0x1000, addr);
// 有些作不够4个CC对齐，而且不是stack[2]，而是1，且没办法确定是哪个，所以只好这样
if (funcaddr)
{
HookParam hp;
hp.address = funcaddr;
hp.offset = stackoffset(2);
@ -89,8 +90,20 @@ namespace
// hp.embed_hook_font=F_GetGlyphOutlineA;
// it will split a long to many lines
hp.filter_fun = filter;
return NewHook(hp, "Circus2");
NewHook(hp, "Circus2");
}
if (funcaddr2)
{
HookParam hp;
hp.address = funcaddr2 + 7;
hp.offset = regoffset(esi);
hp.type = USING_STRING | NO_CONTEXT; //|EMBED_ABLE|EMBED_AFTER_NEW|EMBED_DYNA_SJIS;
// hp.embed_hook_font=F_GetGlyphOutlineA;
// it will split a long to many lines
hp.filter_fun = filter;
NewHook(hp, "Circus2");
}
return funcaddr || funcaddr2;
}
}
@ -332,83 +345,11 @@ namespace
} // 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 = regoffset(esi);
hp.split = regoffset(ecx);
hp.type = USING_STRING | USING_SPLIT;
return NewHook(hp, "Circus3");
}
void CircusFilter(TextBuffer *buffer, HookParam *)
{
auto text = reinterpret_cast<LPSTR>(buffer->buff);
// ConsoleOutput("debug:Circus: -%.*s-", *len, text);
if (buffer->size <= 1 || cpp_strnstr(text, "\\", buffer->size) || (text[0] == '&' && text[1] == 'n'))
return buffer->clear();
CharReplacer(buffer, '\n', ' ');
}
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 = regoffset(edx);
hp.split = stackoffset(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;
return _1 || embed;
}