Cheat Engine

[xeratal]

Hi, everyone!

Really great to see that the forums is still alive since I visited long ago... =]
Anyway, I've a question on how I should go about doing something... I've never used the auto-assembler before so don't be harsh on me!

Suppose I have an address, and I want to make the values of that address continually change the way I want it to.
such that: e.g.
-----------------------------
address X
if x=1, then do x=2
if x=2, then do x=3
if x=3, then do x=4 (note that this is not simply incrementing)
once these checks are over, jump back to where original code was.
-----------------------------
Now before you say anything (if I only had this I would have a long long way to go), I know roughly where I should go (in fact I did a test on "if x=1, then do x=2" and it worked fine).

Here is what I did so far: (I did not use auto-assembler yet, need to ask if it's the right tool etc)
1) Allocated sufficient memory in the memory viewer.
2) In the game I am trying to hack, I have found a code which is always run before I want my check to run, so I changed that code to JMP to my allocated memory.
3) In my allocated memory, I basically put a series of "cmp" "jne" "mov", and finally till I want my check to stop, I jmp back to the original code.

If you can see, basically I have a properly working "edit". What I want, however, is to change this "edit" into code - code such that I can simply put in the cheat table or code list. I think I have to use the auto-assembler, so I read a relatively useful tutorial on it.

What I have came up to this (surely won't compile because I just wrote on tons of things I assumed, and it's basically just to show you guys what I'm doing), and I hope people can tell me if I'm using the right method (the auto-assembler), and if I am, how I can make this code work!

[Dark Byte]

1: Yes, aa can be used
2: Instead of jne [#2] I'd use jne #2 (#2 of course a defined label)
3: perhaps you're not executing the code you overwrite the bytes of with the jmp ?
Use the code injection template (first use the table template followed by the code injection template for best results)

4: as said in 2, yes
example:

[xeratal]

Thanks a lot for your time and fast reply; I saw it immediately but didn't have time to test it.

I did what you said, to use the code injection template, and I realized you already made it extremely easy for noobs like me to understand it (thanks )
Also, I finally fixed up all the small conceptual problems with my hack - only problem I think I still have a general assembler question: how do I mov values to a pointer?
E.g. mov [00400000], 1 (works fine, but I want to mov it to the ptr)
pointer address is 00600000 + A
E.g. mov...?
I tried "mov [00600000+A], 1" but as expected it wasn't that easy.
I'm assuming I need to do something with the registers?

[Dark Byte]

push eax
mov eax,[00600000]
mov [eax+a],1
pop eax