How to crack zip password on KALI linux

by Bharath Narayanasamy

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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.

Table of Contents

Install fcrackzip

sudo apt install fcrackzip

fcrackzip options

fcrackzip --help

fcrackzip version 1.0, a fast/free zip password cracker
written by Marc Lehmann <[email protected]m> You can find more info on
http://www.goof.com/pcg/marc/

USAGE: fcrackzip
          [-b|--brute-force]            use brute force algorithm
          [-D|--dictionary]             use a dictionary
          [-B|--benchmark]              execute a small benchmark
          [-c|--charset characterset]   use characters from charset
          [-h|--help]                   show this message
          [--version]                   show the version of this program
          [-V|--validate]               sanity-check the algorithm
          [-v|--verbose]                be more verbose
          [-p|--init-password string]   use string as initial password/file
          [-l|--length min-max]         check password with length min to max
          [-u|--use-unzip]              use unzip to weed out wrong passwords
          [-m|--method num]             use method number "num" (see below)
          [-2|--modulo r/m]             only calculcate 1/m of the password
          file...                    the zipfiles to crack

methods compiled in (* = default):

 0: cpmask
 1: zip1
*2: zip2, USE_MULT_TAB

Usage Example

C:\home\zybersec\vulnhub\OS-bytesec> fcrackzip -D -p /usr/share/wordlists/rockyou.txt -u safe.zip


PASSWORD FOUND!!!!: pw == hacker1
#hacker1 is the password

C:\home\zybersec\vulnhub\OS-bytesec> unzip safe.zip                                              
Archive:  safe.zip
[safe.zip] secret.jpg password: 
  inflating: secret.jpg              
  inflating: user.cap

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