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TitanEngine
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fix some potential underflows (more to come)

This commit is contained in:
deepzero 2014-03-07 18:03:59 +01:00
parent e7deed5ef4
commit 7f1e44bda7
1 changed files with 4 additions and 0 deletions
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4
TitanEngine/TitanEngine.Debugger.Helper.cpp
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@ -295,6 +295,7 @@ __declspec(dllexport) long long TITCALL GetJumpDestinationEx(HANDLE hProcess, UL
} }
else if(CompareMemory->DataByte[0] == 0x0F && CompareMemory->DataByte[1] >= 0x81 && CompareMemory->DataByte[1] <= 0x8F && CurrentInstructionSize == 4) else if(CompareMemory->DataByte[0] == 0x0F && CompareMemory->DataByte[1] >= 0x81 && CompareMemory->DataByte[1] <= 0x8F && CurrentInstructionSize == 4)
{ {
ReadMemData = 0;
RtlMoveMemory(&ReadMemData, (LPVOID)((ULONG_PTR)ReadMemory + 2), 2); RtlMoveMemory(&ReadMemData, (LPVOID)((ULONG_PTR)ReadMemory + 2), 2);
TargetedAddress = ReadMemData + InstructionAddress + CurrentInstructionSize; TargetedAddress = ReadMemData + InstructionAddress + CurrentInstructionSize;
} }
@ -323,6 +324,7 @@ __declspec(dllexport) long long TITCALL GetJumpDestinationEx(HANDLE hProcess, UL
} }
else if(CompareMemory->DataByte[0] == 0xFF && CompareMemory->DataByte[1] != 0x64 && CompareMemory->DataByte[1] >= 0x60 && CompareMemory->DataByte[1] <= 0x67 && CurrentInstructionSize == 3) else if(CompareMemory->DataByte[0] == 0xFF && CompareMemory->DataByte[1] != 0x64 && CompareMemory->DataByte[1] >= 0x60 && CompareMemory->DataByte[1] <= 0x67 && CurrentInstructionSize == 3)
{ {
ReadMemData = 0;
RtlMoveMemory(&ReadMemData, (LPVOID)((ULONG_PTR)ReadMemory + 2), 1); RtlMoveMemory(&ReadMemData, (LPVOID)((ULONG_PTR)ReadMemory + 2), 1);
TargetedAddress = ReadMemData; TargetedAddress = ReadMemData;
if(CompareMemory->DataByte[1] == 0x60) if(CompareMemory->DataByte[1] == 0x60)
@ -429,6 +431,7 @@ __declspec(dllexport) long long TITCALL GetJumpDestinationEx(HANDLE hProcess, UL
} }
else if(CompareMemory->DataByte[0] == 0x0F && CompareMemory->DataByte[1] >= 0x81 && CompareMemory->DataByte[1] <= 0x8F && CurrentInstructionSize == 4) else if(CompareMemory->DataByte[0] == 0x0F && CompareMemory->DataByte[1] >= 0x81 && CompareMemory->DataByte[1] <= 0x8F && CurrentInstructionSize == 4)
{ {
ReadMemData = 0;
RtlMoveMemory(&ReadMemData, (LPVOID)((ULONG_PTR)InstructionAddress + 2), 2); RtlMoveMemory(&ReadMemData, (LPVOID)((ULONG_PTR)InstructionAddress + 2), 2);
TargetedAddress = ReadMemData + InstructionAddress + CurrentInstructionSize; TargetedAddress = ReadMemData + InstructionAddress + CurrentInstructionSize;
} }
@ -457,6 +460,7 @@ __declspec(dllexport) long long TITCALL GetJumpDestinationEx(HANDLE hProcess, UL
} }
else if(CompareMemory->DataByte[0] == 0xFF && CompareMemory->DataByte[1] != 0x64 && CompareMemory->DataByte[1] >= 0x60 && CompareMemory->DataByte[1] <= 0x67 && CurrentInstructionSize == 3) else if(CompareMemory->DataByte[0] == 0xFF && CompareMemory->DataByte[1] != 0x64 && CompareMemory->DataByte[1] >= 0x60 && CompareMemory->DataByte[1] <= 0x67 && CurrentInstructionSize == 3)
{ {
ReadMemData = 0;
RtlMoveMemory(&ReadMemData, (LPVOID)((ULONG_PTR)InstructionAddress + 2), 1); RtlMoveMemory(&ReadMemData, (LPVOID)((ULONG_PTR)InstructionAddress + 2), 1);
TargetedAddress = ReadMemData; TargetedAddress = ReadMemData;
if(CompareMemory->DataByte[1] == 0x60) if(CompareMemory->DataByte[1] == 0x60)