mirror of
https://github.com/HIllya51/LunaHook.git
synced 2024-10-22 23:18:16 +08:00
119 lines
3.5 KiB
C++
119 lines
3.5 KiB
C++
#include"PONScripter.h"
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bool InsertPONScripterHook()
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{
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if (DWORD str = MemDbg::findBytes("CBString::Failure in (CBString", 30, processStartAddress, processStopAddress))
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{
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if (DWORD calledAt = MemDbg::findBytes(&str, sizeof(str), processStartAddress, processStopAddress))
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{
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DWORD funcs[] = { 0xec8b55, 0xe58955 };
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DWORD addr = MemDbg::findBytes(funcs, 3, calledAt - 0x100, calledAt);
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if (!addr) addr = MemDbg::findBytes(funcs + 1, 3, calledAt - 0x100, calledAt);
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if (addr)
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{
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HookParam hp;
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hp.address = addr;
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hp.type = USING_STRING | CODEC_UTF8 | DATA_INDIRECT;
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hp.offset=get_stack(1);
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hp.index = 0xc;
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return NewHook(hp, "PONScripter");
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}
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else ConsoleOutput("failed to find function start");
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}
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else ConsoleOutput("failed to find string reference");
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}
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else ConsoleOutput("failed to find string");
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return false;
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}
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bool PONScripterFilter(LPVOID data, size_t *size, HookParam *)
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{
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auto text = reinterpret_cast<LPSTR>(data);
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auto len = reinterpret_cast<size_t *>(size);
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static std::string prevText;
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for (int i=0; i<*len; i++) {
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if (text[i] == '^' || text[i]=='@' || text[i]=='\\' || text[i]=='\n') {
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text[i] = '\0';
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*len = i;
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break;
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}
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}
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if (!prevText.compare(text))
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return false;
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prevText = text;
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StringFilter(text, len, "#", 7); // remove # followed by 6 chars
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return true;
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}
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bool InsertPONScripterEngHook()
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{
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/*
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* Sample games:
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* https://vndb.org/v24770
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*/
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const BYTE bytes[] = {
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0x89, 0xD0, // mov eax,edx
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0x8D, 0x75, 0xD8, // lea esi,[ebp-28]
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0x89, 0x55, 0xB4, // mov [ebp-4C],edx
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0x83, 0xC0, 0x01, // add eax,01
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0x89, 0x45, 0xC0 // mov [ebp-40],eax << hook here
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};
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enum { addr_offset = sizeof(bytes) - 3 };
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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("PONScripterEng: 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);
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hp.type = USING_STRING|CODEC_UTF8;
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hp.filter_fun = PONScripterFilter;
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ConsoleOutput("INSERT PONScripterEng");
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return NewHook(hp, "PONScripterEng");
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}
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bool InsertPONScripterJapHook()
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{
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/*
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* Sample games:
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* https://vndb.org/v24770
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*/
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const BYTE bytes[] = {
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0x8D, 0x87, XX4, // lea eax,[edi+00000198] << hook here
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0x8B, 0x0D, XX4, // mov ecx,[ciconia_phase1.exe+3D82C0]
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0x89, 0x55, 0xB4, // mov [ebp-4C],edx
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0xC6, 0x45, 0xAE, 0x00, // mov byte ptr [ebp-52],00
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0x89, 0x45, 0xA4, // mov [ebp-5C],eax
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0x8B, 0x01, // mov eax,[ecx]
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0x8B, 0x75, 0xB4 // mov esi,[ebp-4C]
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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("PONScripterJap: 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_reg(regs::edx);
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hp.type = USING_STRING|CODEC_UTF8;
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hp.filter_fun = PONScripterFilter;
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ConsoleOutput("INSERT PONScripterJap");
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return NewHook(hp, "PONScripterJap");
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}
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bool PONScripter::attach_function() {
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bool ok = InsertPONScripterEngHook() && InsertPONScripterJapHook();
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return ok || InsertPONScripterHook(); // If a language hook is missing, the original code is executed
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}
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