looking for a specific software that's....

[stupidfool]

a program that finds patterns among serials for a given program. once that program knows the pattern it has the paramiters to create new serials that follow the same rules

 

[Milenko]

Sounds what you are going to be doing is legal...

...and I eat bunnies.

 

[Stugots]

The program you're looking for is called John Nash V1.0...

I agree with Milenko, whatever you're doing probobly isnt legal.