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TitanEngine
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call FlushInstructionCache after changing code (this could bug)

This commit is contained in:
Mr. eXoDia 2015-07-30 15:39:09 +02:00
parent 268c684125
commit 51208e22f3
3 changed files with 11 additions and 0 deletions
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2
TitanEngine/Global.Engine.Hider.cpp
View File

@ -118,6 +118,8 @@ static void FixAntidebugApiInProcess(HANDLE hProcess, bool Hide, bool x64)
VirtualProtectEx(hProcess, (LPVOID)APIPatchAddress, patchGetTickCountSize, OldProtect, &OldProtect); VirtualProtectEx(hProcess, (LPVOID)APIPatchAddress, patchGetTickCountSize, OldProtect, &OldProtect);
} }
} }
FlushInstructionCache(hProcess, NULL, 0);
} }
//Quote from The Ultimate Anti-Debugging Reference by Peter Ferrie //Quote from The Ultimate Anti-Debugging Reference by Peter Ferrie

6
TitanEngine/TitanEngine.Breakpoints.cpp
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@ -83,6 +83,7 @@ __declspec(dllexport) bool TITCALL EnableBPX(ULONG_PTR bpxAddress)
{ {
if(WriteProcessMemory(dbgProcessInformation.hProcess, (LPVOID)bpxAddress, &INT3BreakPoint, 1, &NumberOfBytesReadWritten)) if(WriteProcessMemory(dbgProcessInformation.hProcess, (LPVOID)bpxAddress, &INT3BreakPoint, 1, &NumberOfBytesReadWritten))
{ {
FlushInstructionCache(dbgProcessInformation.hProcess, NULL, 0);
testWrite = true; testWrite = true;
} }
} }
@ -90,6 +91,7 @@ __declspec(dllexport) bool TITCALL EnableBPX(ULONG_PTR bpxAddress)
{ {
if(WriteProcessMemory(dbgProcessInformation.hProcess, (LPVOID)bpxAddress, &INT3LongBreakPoint, 2, &NumberOfBytesReadWritten)) if(WriteProcessMemory(dbgProcessInformation.hProcess, (LPVOID)bpxAddress, &INT3LongBreakPoint, 2, &NumberOfBytesReadWritten))
{ {
FlushInstructionCache(dbgProcessInformation.hProcess, NULL, 0);
testWrite = true; testWrite = true;
} }
} }
@ -97,6 +99,7 @@ __declspec(dllexport) bool TITCALL EnableBPX(ULONG_PTR bpxAddress)
{ {
if(WriteProcessMemory(dbgProcessInformation.hProcess, (LPVOID)bpxAddress, &UD2BreakPoint, 2, &NumberOfBytesReadWritten)) if(WriteProcessMemory(dbgProcessInformation.hProcess, (LPVOID)bpxAddress, &UD2BreakPoint, 2, &NumberOfBytesReadWritten))
{ {
FlushInstructionCache(dbgProcessInformation.hProcess, NULL, 0);
testWrite = true; testWrite = true;
} }
} }
@ -147,6 +150,7 @@ __declspec(dllexport) bool TITCALL DisableBPX(ULONG_PTR bpxAddress)
{ {
if(WriteProcessMemory(dbgProcessInformation.hProcess, (LPVOID)bpxAddress, &BreakPointBuffer.at(i).OriginalByte[0], BreakPointBuffer.at(i).BreakPointSize, &NumberOfBytesReadWritten)) if(WriteProcessMemory(dbgProcessInformation.hProcess, (LPVOID)bpxAddress, &BreakPointBuffer.at(i).OriginalByte[0], BreakPointBuffer.at(i).BreakPointSize, &NumberOfBytesReadWritten))
{ {
FlushInstructionCache(dbgProcessInformation.hProcess, NULL, 0);
BreakPointBuffer.at(i).BreakPointActive = UE_BPXINACTIVE; BreakPointBuffer.at(i).BreakPointActive = UE_BPXINACTIVE;
VirtualProtectEx(dbgProcessInformation.hProcess, (LPVOID)bpxAddress, BreakPointBuffer.at(i).BreakPointSize, OldProtect, &OldProtect); VirtualProtectEx(dbgProcessInformation.hProcess, (LPVOID)bpxAddress, BreakPointBuffer.at(i).BreakPointSize, OldProtect, &OldProtect);
return true; return true;
@ -247,6 +251,7 @@ __declspec(dllexport) bool TITCALL SetBPX(ULONG_PTR bpxAddress, DWORD bpxType, L
{ {
if(WriteProcessMemory(dbgProcessInformation.hProcess, (LPVOID)bpxAddress, bpxDataPrt, NewBreakPoint.BreakPointSize, &NumberOfBytesReadWritten)) if(WriteProcessMemory(dbgProcessInformation.hProcess, (LPVOID)bpxAddress, bpxDataPrt, NewBreakPoint.BreakPointSize, &NumberOfBytesReadWritten))
{ {
FlushInstructionCache(dbgProcessInformation.hProcess, NULL, 0);
//add new breakpoint to the list //add new breakpoint to the list
NewBreakPoint.AdvancedBreakPointType = SelectedBreakPointType & 0xFF; NewBreakPoint.AdvancedBreakPointType = SelectedBreakPointType & 0xFF;
NewBreakPoint.BreakPointActive = UE_BPXACTIVE; NewBreakPoint.BreakPointActive = UE_BPXACTIVE;
@ -289,6 +294,7 @@ __declspec(dllexport) bool TITCALL DeleteBPX(ULONG_PTR bpxAddress)
{ {
if(!WriteProcessMemory(dbgProcessInformation.hProcess, (LPVOID)bpxAddress, &BreakPointBuffer.at(found).OriginalByte[0], BreakPointBuffer.at(found).BreakPointSize, &NumberOfBytesReadWritten)) if(!WriteProcessMemory(dbgProcessInformation.hProcess, (LPVOID)bpxAddress, &BreakPointBuffer.at(found).OriginalByte[0], BreakPointBuffer.at(found).BreakPointSize, &NumberOfBytesReadWritten))
{ {
FlushInstructionCache(dbgProcessInformation.hProcess, NULL, 0);
VirtualProtectEx(dbgProcessInformation.hProcess, (LPVOID)bpxAddress, BreakPointBuffer.at(found).BreakPointSize, OldProtect, &OldProtect); VirtualProtectEx(dbgProcessInformation.hProcess, (LPVOID)bpxAddress, BreakPointBuffer.at(found).BreakPointSize, OldProtect, &OldProtect);
return false; return false;
} }

3
TitanEngine/TitanEngine.Debugger.DebugLoop.cpp
View File

@ -454,6 +454,7 @@ __declspec(dllexport) void TITCALL DebugLoop()
VirtualProtectEx(dbgProcessInformation.hProcess, (LPVOID)FoundBreakPoint.BreakPointAddress, FoundBreakPoint.BreakPointSize, PAGE_EXECUTE_READWRITE, &OldProtect); VirtualProtectEx(dbgProcessInformation.hProcess, (LPVOID)FoundBreakPoint.BreakPointAddress, FoundBreakPoint.BreakPointSize, PAGE_EXECUTE_READWRITE, &OldProtect);
if(WriteProcessMemory(dbgProcessInformation.hProcess, (LPVOID)FoundBreakPoint.BreakPointAddress, &FoundBreakPoint.OriginalByte[0], FoundBreakPoint.BreakPointSize, &NumberOfBytesReadWritten)) if(WriteProcessMemory(dbgProcessInformation.hProcess, (LPVOID)FoundBreakPoint.BreakPointAddress, &FoundBreakPoint.OriginalByte[0], FoundBreakPoint.BreakPointSize, &NumberOfBytesReadWritten))
{ {
FlushInstructionCache(dbgProcessInformation.hProcess, NULL, 0);
DBGCode = DBG_CONTINUE; DBGCode = DBG_CONTINUE;
hActiveThread = OpenThread(THREAD_GET_CONTEXT | THREAD_SET_CONTEXT, false, DBGEvent.dwThreadId); hActiveThread = OpenThread(THREAD_GET_CONTEXT | THREAD_SET_CONTEXT, false, DBGEvent.dwThreadId);
myDBGContext.ContextFlags = CONTEXT_CONTROL; myDBGContext.ContextFlags = CONTEXT_CONTROL;
@ -559,6 +560,7 @@ __declspec(dllexport) void TITCALL DebugLoop()
ReadProcessMemory(dbgProcessInformation.hProcess, csp, &data, sizeof(ULONG_PTR), 0); ReadProcessMemory(dbgProcessInformation.hProcess, csp, &data, sizeof(ULONG_PTR), 0);
data &= ~UE_TRAP_FLAG; data &= ~UE_TRAP_FLAG;
WriteProcessMemory(dbgProcessInformation.hProcess, csp, &data, sizeof(ULONG_PTR), 0); WriteProcessMemory(dbgProcessInformation.hProcess, csp, &data, sizeof(ULONG_PTR), 0);
FlushInstructionCache(dbgProcessInformation.hProcess, NULL, 0);
} }
if(ResetBPX) //restore 'normal' breakpoint if(ResetBPX) //restore 'normal' breakpoint
{ {
@ -965,6 +967,7 @@ __declspec(dllexport) void TITCALL DebugLoop()
VirtualProtectEx(dbgProcessInformation.hProcess, (LPVOID)FoundBreakPoint.BreakPointAddress, FoundBreakPoint.BreakPointSize, PAGE_EXECUTE_READWRITE, &OldProtect); VirtualProtectEx(dbgProcessInformation.hProcess, (LPVOID)FoundBreakPoint.BreakPointAddress, FoundBreakPoint.BreakPointSize, PAGE_EXECUTE_READWRITE, &OldProtect);
if(WriteProcessMemory(dbgProcessInformation.hProcess, (LPVOID)FoundBreakPoint.BreakPointAddress, &FoundBreakPoint.OriginalByte[0], FoundBreakPoint.BreakPointSize, &NumberOfBytesReadWritten)) if(WriteProcessMemory(dbgProcessInformation.hProcess, (LPVOID)FoundBreakPoint.BreakPointAddress, &FoundBreakPoint.OriginalByte[0], FoundBreakPoint.BreakPointSize, &NumberOfBytesReadWritten))
{ {
FlushInstructionCache(dbgProcessInformation.hProcess, NULL, 0);
DBGCode = DBG_CONTINUE; DBGCode = DBG_CONTINUE;
hActiveThread = OpenThread(THREAD_GET_CONTEXT | THREAD_SET_CONTEXT | THREAD_QUERY_INFORMATION, false, DBGEvent.dwThreadId); hActiveThread = OpenThread(THREAD_GET_CONTEXT | THREAD_SET_CONTEXT | THREAD_QUERY_INFORMATION, false, DBGEvent.dwThreadId);
myDBGContext.ContextFlags = CONTEXT_CONTROL; myDBGContext.ContextFlags = CONTEXT_CONTROL;