Hey i was thinking? password cracker?

Im not sure if this is against forum policy, but im planning on making one with an educational thought.. How would i go upon doing this? it seems that the only way i could think of doing is..

well actually i dont know how because i would have to have the program connect to a server..

Yes, this is against forum policy. In fact, you should just go ahead and read that policy as it's at the top of every forum.