Cheat Engine

[Zanzer]

I have no problem with you asking for help with advanced concepts and using other people's code.
It wasn't until you asked for help with 'IndexOutOfRangeException' that I became irritated.
That is a very, very common exception and easy to debug.
Even with my irritation, my previous post still provided insight as to the cause of that exception.
It means you're trying to use an index for an array that wasn't big enough.
Well, the only place with an array in the code you posted is: MyProcess(0)
That means it couldn't find the process name that you defined.
Either because you typed the name wrong or because the process wasn't open when you ran the trainer.

[vegettadbz]

Hey again.
I think I am getting how the code works, but it crashes my game...

Based on Igor code and previous posts, I have the following.
I have bolded the parts that I suppose that I have to change for my game... I hope I am right


Private Sub CheckBox1_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles

CheckBox1.CheckedChanged
Dim MyProcess As Process() = Process.GetProcessesByName("Tutorial-i386")
If CheckBox1.Checked = True Then
Dim hAddress As Integer = VirtualAllocEx(MyProcess(0).Handle, IntPtr.Zero, 11, MEM_COMMIT, PAGE_EXECUTE_READWRITE)
'For Jump To Code-Cave
Dim JumpCall As String = JmpCall(hAddress, &H420F3E, 6, False)
Dim JumpBytes As Byte() = HX2Bts(JumpCall)
WriteProcessMemory(MyProcess(0).Handle, &H420F3E, JumpBytes, JumpBytes.Length, IntPtr.Zero)
'For Writing Cave
Dim CaveBytes As Byte() = HX2Bts("C7 83 58 04 00 00 64 00 00 00 C3")
WriteProcessMemory(MyProcess(0).Handle, hAddress, CaveBytes, CaveBytes.Length, IntPtr.Zero)
hAddres = hAddress
ElseIf CheckBox1.Checked = False Then
'For Writing Orignal Bytes
Dim OrignalBytes As Byte() = HX2Bts("29 83 58 04 00 00")
WriteProcessMemory(MyProcess(0).Handle, &H420F3E, OrignalBytes, OrignalBytes.Length, 0)
'For Clear Allocated Memory
VirtualFreeEx(MyProcess(0).Handle, hAddres, IntPtr.Zero, MEM_DECOMMIT)
End If

End Sub


Original Cheat

http://s171.photobucket.com/user/vegettobdz/media/diafora/P1_zpsstvq956m.png.html

[Zanzer]

You should always set the bytes for the code cave before overwriting the game's code with the jump.
It's possible the game will jump to the code cave before there's any code to execute (crash).

Your code cave also needs to end with a jump back to the original address plus 6 (size of overwritten bytes).
Otherwise, it will just continue executing whatever random bytes are there (crash).

Finally, the other instruction you overwrote was: push [edi+60]
You never rewrote that instruction in your code cave.
This means somewhere down the road, the game is trying to pop something off the stack that doesn't exist (crash).

[vegettadbz]

I get the idea of how it works, but I really don't know how I can do that in VB... I am not even sure that I can do that in CE, which is more easy.
An example with the above code in VB would be great.

[vegettadbz]

I tested somethings but I still have some issues. I changed theselines of the above code (previous post)