fcrackzip is a fast password cracker partly written in assembler. It is able to crack password protected zip files with brute force or dictionary based attacks, optionally testing with unzip its results.
It can also crack cpmask’ed images.
Install fcrackzip in ubuntu
sudo apt-get install fcrackzip
This will complete the installation
fcrackzip [-bDBchVvplum2] [–brute-force] [–dictionary] [–benchmark] [–charset characterset] [–help] [–validate] [–verbose] [–init-password string/path] [–length min-max] [–use-unzip] [–method name] [–modulo r/m] file…
fcrackzip -c a -p aaaaaa sample.zip
checks the encrypted files in sample.zip for all lowercase 6 character passwords (aaaaaa … abaaba … ghfgrg … zzzzzz).
fcrackzip –method cpmask –charset A –init AAAA test.ppm
checks the obscured image test.ppm for all four character passwords. -TP fcrackzip -D -p passwords.txt sample.zip check for every password listed in the file passwords.txt.