public bool SetupEndsceneHook()
{
AmeisenLogger.Instance.Log("HookManager", "Setting up the EndsceneHook...", LogLevel.Verbose);
EndsceneAddress = GetEndScene();
// first thing thats 5 bytes big is here
// we are going to replace this 5 bytes with
// our JMP instruction (JMP (1 byte) + Address (4 byte))
EndsceneAddress = IntPtr.Add(EndsceneAddress, ENDSCENE_HOOK_OFFSET);
EndsceneReturnAddress = IntPtr.Add(EndsceneAddress, 0x5);
AmeisenLogger.Instance.Log("HookManager", $"Endscene is at: {EndsceneAddress.ToString("X")}", LogLevel.Verbose);
// if WoW is already hooked, unhook it
if (IsWoWHooked)
{
DisposeHook();
}
else
{
if (WowInterface.XMemory.ReadBytes(EndsceneAddress, 5, out byte[] bytes))
private void SetupEndsceneHook()
{
// first thing thats 5 bytes big is here
// we are going to replace this 5 bytes with
// our JMP instruction (JMP (1 byte) + Address (4 byte))
EndsceneAddress += ENDSCENE_HOOK_OFFSET;
// if WoW is already hooked, unhook it
if (IsWoWHooked)
{
DisposeHook();
}
else
{
originalEndsceneBytes = TrashMem.ReadChars(EndsceneAddress, 5);
}
// if WoW is now/was unhooked, hook it
if (!IsWoWHooked)
{
AmeisenBotLogger.Instance.Log($"[{ProcessId.ToString("X", CultureInfo.InvariantCulture.NumberFormat)}]\tHooking EndScene at \"0x{EndsceneAddress.ToString("X", CultureInfo.InvariantCulture.NumberFormat)}\"", LogLevel.Verbose);
// the address that we will return to after
// the jump wer'e going to inject
EndsceneReturnAddress = EndsceneAddress + 0x5;
// integer to check if there is code waiting to be executed
CodeToExecuteAddress = TrashMem.AllocateMemory(4);
TrashMem.Write(CodeToExecuteAddress.Address, 0);
// integer to save the address of the return value
ReturnValueAddress = TrashMem.AllocateMemory(4);
TrashMem.Write(ReturnValueAddress.Address, 0);
// codecave to check if we need to execute something
CodecaveForCheck = TrashMem.AllocateMemory(128);
AmeisenBotLogger.Instance.Log($"[{ProcessId.ToString("X", CultureInfo.InvariantCulture.NumberFormat)}]\tCCCheck is at \"0x{CodecaveForCheck.Address.ToString("X", CultureInfo.InvariantCulture.NumberFormat)}\"", LogLevel.Verbose);
// codecave for the code we wa't to execute
CodecaveForExecution = TrashMem.AllocateMemory(2048);
AmeisenBotLogger.Instance.Log($"[{ProcessId.ToString("X", CultureInfo.InvariantCulture.NumberFormat)}]\tCCExecution is at \"0x{CodecaveForExecution.Address.ToString("X", CultureInfo.InvariantCulture.NumberFormat)}\"", LogLevel.Verbose);
TrashMem.Asm.Clear();
// save registers
TrashMem.Asm.AddLine("PUSHFD");
TrashMem.Asm.AddLine("PUSHAD");
// check for code to be executed
TrashMem.Asm.AddLine($"MOV EBX, [0x{CodeToExecuteAddress.Address.ToString("X")}]");
TrashMem.Asm.AddLine("TEST EBX, 1");
TrashMem.Asm.AddLine("JE @out");
// execute our stuff and get return address
TrashMem.Asm.AddLine($"MOV EDX, 0x{CodecaveForExecution.Address.ToString("X")}");
TrashMem.Asm.AddLine("CALL EDX");
TrashMem.Asm.AddLine($"MOV [0x{ReturnValueAddress.Address.ToString("X")}], EAX");
// finish up our execution
TrashMem.Asm.AddLine("@out:");
TrashMem.Asm.AddLine("MOV EDX, 0");
TrashMem.Asm.AddLine($"MOV [0x{CodeToExecuteAddress.Address.ToString("X")}], EDX");
// restore registers
TrashMem.Asm.AddLine("POPAD");
TrashMem.Asm.AddLine("POPFD");
byte[] asmBytes = TrashMem.Asm.Assemble();
// needed to determine the position where the original
// asm is going to be placed
int asmLenght = asmBytes.Length;
// inject the instructions into our codecave
TrashMem.Asm.Inject(CodecaveForCheck.Address);
// ---------------------------------------------------
// End of the code that checks if there is asm to be
// executed on our hook
// ---------------------------------------------------
// Prepare to replace the instructions inside WoW
TrashMem.Asm.Clear();
// do the original EndScene stuff after we restored the registers
// and insert it after our code
TrashMem.WriteBytes(CodecaveForCheck.Address + (uint)asmLenght, originalEndsceneBytes);
// return to original function after we're done with our stuff
TrashMem.Asm.AddLine($"JMP 0x{EndsceneReturnAddress.ToString("X")}");
TrashMem.Asm.Inject(CodecaveForCheck.Address + (uint)asmLenght + 5);
TrashMem.Asm.Clear();
// ---------------------------------------------------
// End of doing the original stuff and returning to
// the original instruction
// ---------------------------------------------------
// modify original EndScene instructions to start the hook
TrashMem.Asm.AddLine($"JMP 0x{CodecaveForCheck.Address.ToString("X")}");
TrashMem.Asm.Inject(EndsceneAddress);
AmeisenBotLogger.Instance.Log($"[{ProcessId.ToString("X", CultureInfo.InvariantCulture.NumberFormat)}]\tInjected Hook [IsWoWHooked = {IsWoWHooked}]", LogLevel.Verbose);
// we should've hooked WoW now
}
}
