Exemple #1
0
bool CDetour::Remove ( BYTE *orig, BYTE *jmp, int iPatchType, int len )
{
	int		iMinLen = 0;
	DWORD	dwBack = 0;

	if ( !(iMinLen = GetDetourLen(iPatchType)) )
		return false;

	if ( len != 0 && len < iMinLen )
		return false;

	// Try and find the end of the instruction automatically
	if ( len == 0 )
	{
		len = GetDetourLenAuto( jmp, iMinLen );
		if ( len == 0 )
			len = GetDetourLen( iPatchType );
		if ( len == 0 || iMinLen == 0 )
			return false;
		if ( len < iMinLen )
			return false;
	}

	// Write the bytes @ the jmp back to the orig
	MEMORY_BASIC_INFORMATION	mbi;
	VirtualQuery( (void *)orig, &mbi, sizeof(mbi) );
	VirtualProtect( mbi.BaseAddress, mbi.RegionSize, PAGE_EXECUTE_READWRITE, &mbi.Protect );
	memcpy( orig, jmp, len );
	VirtualProtect( mbi.BaseAddress, mbi.RegionSize, mbi.Protect, &mbi.Protect );
	FlushInstructionCache( GetCurrentProcess(), (void *)orig, len );

	return true;
}
Exemple #2
0
void *CDetour::Create ( char *dllName, char *apiName, const BYTE *det, int iPatchType, int len )
{
	BYTE	*jmp = NULL;
	BYTE	*orig = NULL;
	int		iMinLen = 0;

	if ( !(iMinLen = GetDetourLen(iPatchType)) )
		return 0;

	if ( len != 0 && len < iMinLen )
		return 0;

	// Get the API address
	m_hModule = GetModuleHandle( dllName );
	m_dwAddress = ( DWORD ) GetProcAddress( m_hModule, apiName );

	if ( !m_dwAddress || !det )
		return 0;

	orig = (BYTE *)m_dwAddress;

	// Try and find the end of the instruction automatically
	if ( len == 0 )
	{
		len = GetDetourLenAuto( orig, iMinLen );

		if ( len < iMinLen )
			return 0;
	}

	if ( !Detour(jmp, orig, det, iPatchType, len) )
		return 0;

	return jmp - len;
}
Exemple #3
0
void *CDetour::Create ( BYTE *orig, const BYTE *det, int iPatchType, int len )
{
	BYTE	*jmp = NULL;
	int		iMinLen = 0;

	if ( !(iMinLen = GetDetourLen(iPatchType)) )
		return 0;

	if ( len != 0 && len < iMinLen )
		return 0;

	// Try and find the end of the instruction automatically
	if ( len == 0 )
	{
		len = GetDetourLenAuto( orig, iMinLen );

		if ( len < iMinLen )
			return 0;
	}

	if ( !Detour(jmp, orig, det, iPatchType, len) )
		return 0;

	return jmp - len;
}
Exemple #4
0
void *CDetour::Create(BYTE *orig, const BYTE *det, int iPatchType, int len)
{
	BYTE *jmp = NULL;
	int iMinLen = 0;

	// Get minimum bytes to overwrite
	if(iPatchType == DETOUR_TYPE_OBS_RAND)
		iPatchType = (rand() % (DetourRandTypeHigh - DetourRandTypeLow + 1) + DetourRandTypeLow);

	if(!(iMinLen = GetDetourLen(iPatchType)))
		return 0;

	if(len != 0 && len < iMinLen)
		return 0;

	// Try and find the end of the instruction automatically
	if(len == 0)
	{
		len = GetDetourLenAuto(orig, iMinLen);

		if(len < iMinLen)
			return 0;
	}

	if(!Detour(jmp, orig, det, iPatchType, len))
		return 0;

	IsHooked = true;
	return (jmp-len);
}
Exemple #5
0
bool CDetour::Remove ( char *dllName, char *apiName, BYTE *jmp, int iPatchType, int len )
{
	DWORD	dwBack = 0;
	BYTE	*orig = NULL;
	int		iMinLen = 0;

	// Get the API address
	m_hModule = GetModuleHandle( dllName );
	m_dwAddress = ( DWORD ) GetProcAddress( m_hModule, apiName );

	if ( !m_dwAddress || !jmp )
		return false;

	orig = (BYTE *)m_dwAddress;

	if ( !(iMinLen = GetDetourLen(iPatchType)) )
		return false;

	if ( len != 0 && len < iMinLen )
		return false;

	// Try and find the end of the instruction automatically
	if ( len == 0 )
	{
		len = GetDetourLenAuto( jmp, iMinLen );

		if ( len < iMinLen )
			return 0;
	}

	// Write the bytes @ the jmp back to the orig
	VirtualProtect( orig, len, PAGE_READWRITE, &dwBack );
	memcpy( orig, jmp, len );
	VirtualProtect( orig, len, dwBack, &dwBack );

	return true;
}