I have installed fcrackzip. The help page of fcrackzip says

$ fcrackzip --h

fcrackzip version 1.0, a fast/free zip password cracker
written by Marc Lehmann <pcg@goof.com> You can find more info on*emphasized text*

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 algortihm
          [-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

How can I crack the zipfile which is protected with password with fcrackzip or any other available tool?

  • I think your answer lies in the question itself, the -h switch gives you the options as to how to use the tool with another file, if you need more info, try doing man fcrackzip – Abel Tom Feb 6 '18 at 11:20
  • i don't know that one also....pls help me.... – Jaswanth Feb 6 '18 at 11:21
  • May be this would help you, it has examples too. – Abel Tom Feb 6 '18 at 12:13
  • 1
    The answer is pretty much in the screenshot: fcrackzip /path/to/file.zip. use --brute-force or `--dictionary`` with it depending on what you need... – JonasCz Feb 6 '18 at 12:25
  • @JonasCz-ReinstateMonica Would you like to post an answer? If you do, ping me, I'll upvote :) – Kulfy May 4 '20 at 20:51

There are a few ways to do this.

  1. fcrackzip: To brute force you can use

     fcrackzip -u -b -v file.zip 

    The -u flag weeds out incorrect passwords, -b is for brute-forcing, -l is for specifying the password length, e.g: 4-8. You can use a password-list with the -D and -p flags, like so:

     fcrackzip -u -b -D -p /home/Desktop/passwordlist.txt file.zip
  2. RarCrack:

     rarcrack --type zip/7z/rar file.zip 

    I like this one as it saves cracking progress to a file called yourfilename.zip.xml, and will pick up where you left off when you next use it.

  3. John the Ripper: Generate the hash first using

     zip2john file.zip > whateveryouwanttocallit.txt 

    or use rar2john, depending on the file, and then:

     john --format=zip whateveryoucallit.txt

    or --format=rar.

    All of these can take a while depending on the length of the password, and the characters, but there you go.

    If any of these tools aren't installed, install them with

     sudo apt-get install rarcrack/john/fcrackzip 

    If this is still not enough, you can download a fast Windows zip cracker, such as Passper for Zip, and run it with Wine.


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.