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SetBPX: check return value of VirtualProtectEx before writing

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Matthijs Lavrijsen 2021-01-12 18:21:17 +01:00
parent 8f83721fd3
commit 9c98cd2436
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1 changed files with 2 additions and 1 deletions
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TitanEngine/TitanEngine.Breakpoints.cpp
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@ -246,7 +246,8 @@ __declspec(dllexport) bool TITCALL SetBPX(ULONG_PTR bpxAddress, DWORD bpxType, L
} }
//set breakpoint in process //set breakpoint in process
bpxDataCmpPtr = (PMEMORY_COMPARE_HANDLER)bpxDataPrt; bpxDataCmpPtr = (PMEMORY_COMPARE_HANDLER)bpxDataPrt;
VirtualProtectEx(dbgProcessInformation.hProcess, (LPVOID)bpxAddress, NewBreakPoint.BreakPointSize, PAGE_EXECUTE_READWRITE, &OldProtect); if(!VirtualProtectEx(dbgProcessInformation.hProcess, (LPVOID)bpxAddress, NewBreakPoint.BreakPointSize, PAGE_EXECUTE_READWRITE, &OldProtect))
return false;
if(ReadProcessMemory(dbgProcessInformation.hProcess, (LPVOID)bpxAddress, &NewBreakPoint.OriginalByte[0], NewBreakPoint.BreakPointSize, &NumberOfBytesReadWritten)) if(ReadProcessMemory(dbgProcessInformation.hProcess, (LPVOID)bpxAddress, &NewBreakPoint.OriginalByte[0], NewBreakPoint.BreakPointSize, &NumberOfBytesReadWritten))
{ {
if(WriteProcessMemory(dbgProcessInformation.hProcess, (LPVOID)bpxAddress, bpxDataPrt, NewBreakPoint.BreakPointSize, &NumberOfBytesReadWritten)) if(WriteProcessMemory(dbgProcessInformation.hProcess, (LPVOID)bpxAddress, bpxDataPrt, NewBreakPoint.BreakPointSize, &NumberOfBytesReadWritten))