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installing fcrackzip on OS X - badgerblog
May 20th, 2011
06:12 pm


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installing fcrackzip on OS X
Anyone with a better way to crack a forgotten password on a zip file, preferably on an OS X system, let me know.

If you don't have XCode installed on your Mac, download it from the App and install it, or install it from the OS X DVD. It's a 4.3Gb download.


Double-click to unpack the file.

In a terminal
cd to the directory of the unpacked file.

make install
(note: your system may respond with ERROR 1 to the "make install". If so,
sudo make install

run it

fcrackzip -v -b -l 8-10 -c Aa1 -u file.zip

will see something like

found file 'modhash', (size cp/uc 2657/ 24346, flags 1, chk 9a8e)
8 file maximum reached, skipping further files
checking pw phe3Uhh




(4 comments | Leave a comment)

From:Hamza Berrada
Date:June 9th, 2014 06:35 pm (UTC)

Any better method?

I have been trying to skip the password on a rar file for over two weeks. I found your website, followed step by step:
- Installed XCode
- Downloaded the fcrackzip
- Got stuck when I couldn't find how to access the terminal
- Downloaded MacPorts (read it could help) - unfortunately it didn't
- I tried every possible extract software online free & paid
No Success....

I am coming back to you hoping that you have found an easier more successful way to bypass the password before extracting a rar file.

Thank you for you assistance
[User Picture]
Date:June 10th, 2014 02:33 am (UTC)

Re: Any better method?

These days I would probably try John the Ripper.


"A: John only loads properly formatted text files directly. It can load /etc/passwd and PWDUMP format files. Starting with version 1.7.6, it can also load text files containing one password hash per line (and nothing else on that line). Some other file formats are supported via extra tools (supplied with John): unafs (Kerberos AFS database files), undrop (Eggdrop IRC bot userfiles), ssh2john (OpenSSH private keys), pdf2john (some password-protected PDF files), rar2john (some password-protected RAR archives), zip2john (some password-protected PKZIP and WinZip archives). You need -jumbo for most of these. To use the proper one of these (for your file format), run it on your file(s) and redirect the output to a new file (using your shell's output redirection feature - e.g., "./ssh2john ~/.ssh/id_rsa > sshpasswd"). Then run John on the resulting file (e.g., "./john sshpasswd")."

Also, see
From:Hamza Berrada
Date:June 12th, 2014 09:36 am (UTC)

Re: Any better method?

Hello badger,

Thank your for your reply about John the Ripper. I keep following step by step everything, but yet keep receiving errors such as: sudo: apt-get: command not found
As I am starting to see, John the Ripper is not an easy software to use. I am pretty computer savvy, but receiving errors on the TERMINAL makes me think twice about my knowledge.
Is there any other simple way to obtain the rar password? Or maybe some text that does not finish up with an error?
Thank you for your help
[User Picture]
Date:June 12th, 2014 01:53 pm (UTC)
I'm sorry, I don't know anything to help you.
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