FreeCell - Allow any move
Posted in Hacking and Cracking by sandaruwan on February 12th, 2006“That move is not allowed” - most probally you have got this message several times when you are playing freecell. This message is bit of a headache. I wanted get rid of it. With the great help of W32Dasm, it was pretty easy.
The first step was disassembling the game. Then, I searched through the code for “That move….”. It only appeared only once which makes our job much easier. backtrack, backtrack, backtrack, it was really easy. Then I was able to find out a jump : “jbe 01003C2B” at offset 2F7C. Changing those into ‘nop’s will allow you to make any move except the moves on top bars. So, I was going around here and there in the code and managed to change the top bar. Since it is 3:23 AM, I’m not going to explain how to do it. If you want to change the top bars, you can apply the same theory. It is also changing few jumps. Hint : Try to use debugging feature of W32DASM.
