Friday, August 21, 2009

Cracking zip passwords with fcrackzip

Fcrackzip is a small utility that can become a handy tool when you want to look for lost zip password.
Fcracksip i a available in the ubuntu repository and you can install it as
$ sudo apt-get install fcrackzip

To see the available options with fcrackzip , try the following.

$ fcrackzip --help

You can look for a password like this.

$ fcrackzip -c a -p aaaaaa

The above cimmand will check the encrypted files in for all lowercase 6 character passwords (aaaaaa ... abaaba ... ghfgrg ... zzzzzz).

fcrackzip supports brute force mode as well as dictionary mode. The man page has some more interesting options you can try.

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