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TitanEngine
mirror of https://github.com/x64dbg/TitanEngine
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- fixed first/second chance exceptions

This commit is contained in:
mr.exodia 2013-10-12 17:42:00 +02:00
parent 8b1a465059
commit 14a3692b11
17 changed files with 43 additions and 52 deletions
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Release/x32/TitanEngine.dll
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Release/x32/TitanEngine.lib
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Release/x32/TitanEngine_x86.a
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Release/x64/TitanEngine_x64.a
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1
SDK/C/TitanEngine.h
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@ -117,7 +117,6 @@
#define UE_CH_ALLEVENTS 22
#define UE_CH_SYSTEMBREAKPOINT 23
#define UE_CH_UNHANDLEDEXCEPTION 24
#define UE_CH_AFTERUNHANDLEDEXCEPTION 25
#define UE_OPTION_HANDLER_RETURN_HANDLECOUNT 1
#define UE_OPTION_HANDLER_RETURN_ACCESS 2

1
SDK/CPP/TitanEngine.h
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@ -117,7 +117,6 @@
#define UE_CH_ALLEVENTS 22
#define UE_CH_SYSTEMBREAKPOINT 23
#define UE_CH_UNHANDLEDEXCEPTION 24
#define UE_CH_AFTERUNHANDLEDEXCEPTION 25
#define UE_OPTION_HANDLER_RETURN_HANDLECOUNT 1
#define UE_OPTION_HANDLER_RETURN_ACCESS 2

4
SDK/Delphi/TitanEngine.pas
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@ -258,6 +258,10 @@ const
UE_CH_LOADDLL = 18;
UE_CH_UNLOADDLL = 19;
UE_CH_OUTPUTDEBUGSTRING = 20;
UE_CH_AFTEREXCEPTIONPROCESSING = 21;
UE_CH_ALLEVENTS = 22;
UE_CH_SYSTEMBREAKPOINT = 23;
UE_CH_UNHANDLEDEXCEPTION = 24;
UE_FUNCTION_STDCALL = 1;
UE_FUNCTION_CCALL = 2;

2
SDK/LUA/TitanEngine.lua
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@ -116,6 +116,8 @@ UE_CH_UNLOADDLL = 19
UE_CH_OUTPUTDEBUGSTRING = 20
UE_CH_AFTEREXCEPTIONPROCESSING = 21
UE_CH_ALLEVENTS = 22
UE_CH_SYSTEMBREAKPOINT = 23
UE_CH_UNHANDLEDEXCEPTION = 24
UE_OPTION_HANDLER_RETURN_HANDLECOUNT = 1
UE_OPTION_HANDLER_RETURN_ACCESS = 2

3
SDK/MASM/TitanEngine.INC
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@ -94,6 +94,9 @@ UE_CH_UNLOADDLL EQU 19
UE_CH_OUTPUTDEBUGSTRING EQU 20
UE_CH_AFTEREXCEPTIONPROCESSING EQU 21
UE_CH_ALLEVENTS EQU 22
UE_CH_SYSTEMBREAKPOINT EQU 23
UE_CH_UNHANDLEDEXCEPTION EQU 24
UE_OPTION_HANDLER_RETURN_HANDLECOUNT EQU 1
UE_OPTION_HANDLER_RETURN_ACCESS EQU 2
UE_OPTION_HANDLER_RETURN_FLAGS EQU 3

4
SDK/Python/TitanEngine.py
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@ -105,6 +105,10 @@ UE_CH_EXITPROCESS = 17
UE_CH_LOADDLL = 18
UE_CH_UNLOADDLL = 19
UE_CH_OUTPUTDEBUGSTRING = 20
UE_CH_AFTEREXCEPTIONPROCESSING = 21
UE_CH_ALLEVENTS = 22
UE_CH_SYSTEMBREAKPOINT = 23
UE_CH_UNHANDLEDEXCEPTION = 24
UE_OPTION_HANDLER_RETURN_HANDLECOUNT = 1
UE_OPTION_HANDLER_RETURN_ACCESS = 2

76
TitanEngine/TitanEngine.cpp
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@ -15528,10 +15528,6 @@ __declspec(dllexport) void TITCALL SetCustomHandler(DWORD ExceptionId, LPVOID Ca
{
DBGCustomHandler->chUnhandledException = (ULONG_PTR)CallBack;
}
else if(ExceptionId == UE_CH_AFTERUNHANDLEDEXCEPTION)
{
DBGCustomHandler->chAfterUnhandledException = (ULONG_PTR)CallBack;
}
else if(ExceptionId == UE_CH_ALLEVENTS)
{
DBGCustomHandler->chEverythingElse = (ULONG_PTR)CallBack;
@ -16959,7 +16955,7 @@ __declspec(dllexport) void TITCALL DebugLoop()
}
else if(DBGEvent.dwDebugEventCode == EXCEPTION_DEBUG_EVENT)
{
bool firstchance=false;
//bool firstchance=false;
if(DBGCustomHandler->chEverythingElse != NULL)
{
myCustomHandler = (fCustomHandler)((LPVOID)DBGCustomHandler->chEverythingElse);
@ -16972,19 +16968,20 @@ __declspec(dllexport) void TITCALL DebugLoop()
DBGCustomHandler->chEverythingElse = NULL;
}
}
if(DBGEvent.u.Exception.dwFirstChance == FALSE)
if(DBGEvent.u.Exception.dwFirstChance == FALSE) //second chance exception
{
if(!enginePassAllExceptions)
{
firstchance=true;
DBGCode = DBG_CONTINUE;
}
else
{
DBGCode = DBG_EXCEPTION_NOT_HANDLED;
DBGCode = DBG_EXCEPTION_NOT_HANDLED; //let debuggee handle the exception
}
RtlMoveMemory(&TerminateDBGEvent, &DBGEvent, sizeof DEBUG_EVENT);
}
//handle different exception codes
if(DBGEvent.u.Exception.ExceptionRecord.ExceptionCode == STATUS_BREAKPOINT)
{
/*if(DBGCustomHandler->chBreakPoint != NULL)
@ -17266,18 +17263,6 @@ __declspec(dllexport) void TITCALL DebugLoop()
}
else if(DBGEvent.u.Exception.ExceptionRecord.ExceptionCode == STATUS_SINGLE_STEP)
{
/*if(DBGCustomHandler->chSingleStep != NULL)
{
myCustomHandler = (fCustomHandler)((LPVOID)DBGCustomHandler->chSingleStep);
__try
{
myCustomHandler(&DBGEvent.u.Exception.ExceptionRecord);
}
__except(EXCEPTION_EXECUTE_HANDLER)
{
DBGCustomHandler->chSingleStep = NULL;
}
}*/
if(ResetBPX == true || ResetHwBPX == true || ResetMemBPX == true)
{
DBGCode = DBG_CONTINUE;
@ -17535,7 +17520,7 @@ __declspec(dllexport) void TITCALL DebugLoop()
EngineCloseHandle(hActiveThread);
}
}
if(DBGCode==DBG_EXCEPTION_NOT_HANDLED || firstchance)
if(DBGCode==DBG_EXCEPTION_NOT_HANDLED)
{
if(DBGCustomHandler->chSingleStep != NULL)
{
@ -17739,8 +17724,9 @@ __declspec(dllexport) void TITCALL DebugLoop()
{
DBGCode = DBG_EXCEPTION_NOT_HANDLED;
}
if(DBGCode==DBG_EXCEPTION_NOT_HANDLED || firstchance)
if(DBGCode==DBG_EXCEPTION_NOT_HANDLED)
{
//TODO: re-set memory breakpoint?
if(DBGCustomHandler->chPageGuard != NULL)
{
myCustomHandler = (fCustomHandler)((LPVOID)DBGCustomHandler->chPageGuard);
@ -17773,18 +17759,6 @@ __declspec(dllexport) void TITCALL DebugLoop()
}
else if(DBGEvent.u.Exception.ExceptionRecord.ExceptionCode == STATUS_ILLEGAL_INSTRUCTION)
{
if(DBGCustomHandler->chIllegalInstruction != NULL)
{
myCustomHandler = (fCustomHandler)((LPVOID)DBGCustomHandler->chIllegalInstruction);
__try
{
myCustomHandler(&DBGEvent.u.Exception.ExceptionRecord);
}
__except(EXCEPTION_EXECUTE_HANDLER)
{
DBGCustomHandler->chIllegalInstruction = NULL;
}
}
MaximumBreakPoints = 0;
for(MaximumBreakPoints = 0; MaximumBreakPoints < BreakPointSetCount; MaximumBreakPoints++)
{
@ -17980,6 +17954,21 @@ __declspec(dllexport) void TITCALL DebugLoop()
{
DBGCode = DBG_EXCEPTION_NOT_HANDLED;
}
if(DBGCode==DBG_EXCEPTION_NOT_HANDLED) //call custom handler
{
if(DBGCustomHandler->chIllegalInstruction != NULL)
{
myCustomHandler = (fCustomHandler)((LPVOID)DBGCustomHandler->chIllegalInstruction);
__try
{
myCustomHandler(&DBGEvent.u.Exception.ExceptionRecord);
}
__except(EXCEPTION_EXECUTE_HANDLER)
{
DBGCustomHandler->chIllegalInstruction = NULL;
}
}
}
}
else if(DBGEvent.u.Exception.ExceptionRecord.ExceptionCode == STATUS_NONCONTINUABLE_EXCEPTION)
{
@ -18093,7 +18082,9 @@ __declspec(dllexport) void TITCALL DebugLoop()
}
}
}
if(DBGCode==DBG_EXCEPTION_NOT_HANDLED || firstchance)
//post exception handling (for debugger exceptions)
if(DBGCode==DBG_EXCEPTION_NOT_HANDLED)
{
if(DBGCustomHandler->chUnhandledException != NULL)
{
@ -18107,19 +18098,8 @@ __declspec(dllexport) void TITCALL DebugLoop()
DBGCustomHandler->chUnhandledException = NULL;
}
}
if(DBGCustomHandler->chAfterUnhandledException != NULL)
{
myCustomHandler = (fCustomHandler)((LPVOID)DBGCustomHandler->chAfterUnhandledException);
__try
{
myCustomHandler(&DBGEvent.u.Exception.ExceptionRecord);
}
__except(EXCEPTION_EXECUTE_HANDLER)
{
DBGCustomHandler->chAfterUnhandledException = NULL;
}
}
}
if(DBGCustomHandler->chAfterException != NULL)
{
myCustomHandler = (fCustomHandler)((LPVOID)DBGCustomHandler->chAfterException);
@ -18133,6 +18113,8 @@ __declspec(dllexport) void TITCALL DebugLoop()
}
}
}
//after handling of debug codes
if(engineResumeProcessIfNoThreadIsActive)
{
if(!ThreaderIsAnyThreadActive())

2
TitanEngine/stdafx.h
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@ -164,7 +164,6 @@ typedef struct
ULONG_PTR chAfterException;
ULONG_PTR chSystemBreakpoint;
ULONG_PTR chUnhandledException;
ULONG_PTR chAfterUnhandledException;
} CustomHandler, *PCustomHandler;
typedef struct
@ -391,7 +390,6 @@ typedef struct HOOK_ENTRY
#define UE_CH_ALLEVENTS 22
#define UE_CH_SYSTEMBREAKPOINT 23
#define UE_CH_UNHANDLEDEXCEPTION 24
#define UE_CH_AFTERUNHANDLEDEXCEPTION 25
#define UE_OPTION_HANDLER_RETURN_HANDLECOUNT 1
#define UE_OPTION_HANDLER_RETURN_ACCESS 2

2
readme.txt
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@ -13,4 +13,4 @@ The following things have been fixed/added (list might be incomplete):
- smaller and faster DLL loaders
- supports multiple calling conventions (including the callbacks)
- MinGW import libraries
- fixed exception handling