Cheat Engine

[coder sal]

Ok I went on Tuts4you and I learned a few things but I still need help with Gunner's keygenme/crackme, here I quoted what you said.

[atom0s]

In Olly there are a few columns in the CPU window that shows you the code, on the left side that is. Address | Bytes | Code | Comment, just double click on the bytes and it will set a breakpoint. You can tell if theres a break on something if the address is highlighted in red after you double click it. (You can also use F2 to set and remove breakpoints.)

[coder sal]

No I know that, its highlighted in red, but how do you find out how the system works and create a keygen with a breakpoint?

[HolyBlah]

You need to read the ASM code.

Thats code is hard for beginning, try something simple like this.

[atom0s]

Like Holy said, you need to look at the code. Once you understand the flow of ASM things actually stand out to you, and you can say, oh hey I know what thats doing with that number or string.

A pretty simple method to teach yourself how ASM works is making your own crackme using a keygen style method that encrypts a string and checks for the same thing unencrypted or something. Then debug the code and follow it through to see how it works when its in machine level code.

VB changes code a bit though, there will be extra stuff that looks like it shouldn't be there but that is because it is the way the code is compiled. VB will almost always create a new buffer itself to store any value when you manipulate things before putting it back into the one you intended it to go into for one.

For example you could do something like:

[Labyrnth]

If you do a google search for some tutorials.

Lenas Tutorials, You will learn allot.

[coder sal]