Hi, its my first post...
I sucessflly break the registrationroutine of Winzip 9, using the thechnique know as key fishing (using SoftIce), I have modified the routine so that it accepts any serial number too. Im a beginner and Im just doing it to learn and increase my skills. Im trying to get the algorithm that generates the serial number( to make a keygen), but its hard to me, it seems complex at the momment, I would like to know if someone have already done it and say me just how difficult is it, in a 0-10 scale and give me some hints.

Have you read the FAQ listed in the BIG RED LETTERS? I raise this question for two reasons. First, you have not stated that you have and this is your first post. Second, even though you appear to be asking just a simply question, you will, ultimately, not get much useful information that does not result in the posting of some code and, because you have identified your target, that would be specifically prohibited here.

So, if all you want is an answer that says, "on a scale of 1-10" it's and X, there would appear to be no problem. However, as soon as any "hint" involves code from the target, there is a BIG problem, so just make SURE that neither YOU or ANYONE ELSE posts any code from THIS target.

Regards,

Sorry, very MUCH!
I understand the point and I agree with ALL that you said. I will not do it again, I dont want troubles nor put the forum in troubles too!
Im stuying the soft. cited and I discovered very intersting things!
I will read the FAQ now, I learned the lesson!

That's all we ask.

Regards,