Windows-based .Zip file password cracker?

Paul Boz

Does anyone know of a free Windows-based .zip file password cracker/encryption breaker? This is for a legitimate business need.

Thanks!

Paul Boz

Linux to the rescue yet again... FCrackZip is the perfect tool for this. There's a windows port using Cygwin but to hell with that. Just install it in ubuntu using package manager and tear it up. I got the password using the default /words file in linux and had the password in under 2 seconds. The brute force attack was going strong an hour and a half in at that point.

Lesson: Brute force and dictionary attack at the same time for maximum profit.

arwes

Nifty, I'll keep this in mind the next time I run across one. Blue Cross sends one of my life & health reps zipped files all the time and they always forget which password they used.

steve_f

Recent versions of winzip use AES256 so hope that isn't what you need to crack.

dynamik

steve_f wrote: »

Recent versions of winzip use AES256 so hope that isn't what you need to crack.

The strength of the encryption is largely irrelevant if people are using stupid keys (such as dictionary words).

TheShadow

It is amazing how many passwords can be cracked using the stupid key attack. It is my favorite one.