https://github.com/hyc/fcrackzip

A braindead program for cracking encrypted ZIP archives. Forked from http://oldhome.schmorp.de/marc/fcrackzip.html
https://github.com/hyc/fcrackzip

Last synced: 6 days ago
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A braindead program for cracking encrypted ZIP archives. Forked from http://oldhome.schmorp.de/marc/fcrackzip.html

• Host: GitHub
• URL: https://github.com/hyc/fcrackzip
• Owner: hyc
• License: gpl-2.0
• Created: 2013-06-20T01:05:04.000Z (over 11 years ago)
• Default Branch: master
• Last Pushed: 2023-03-23T16:43:35.000Z (over 1 year ago)
• Last Synced: 2024-08-02T07:14:26.160Z (3 months ago)
• Language: C
• Size: 116 KB
• Stars: 435
• Watchers: 14
• Forks: 76
• Open Issues: 0
• Metadata Files:
  • Readme: README
  • Changelog: ChangeLog
  • License: COPYING
  • Authors: AUTHORS

Awesome Lists containing this project

• awesome-password-cracking - frackzip - Small tool for cracking encrypted ZIP archives. (Specific file formats / ZIP)

README

        
Original README text follows below. This archive was originally copied

from http://oldhome.schmorp.de/marc/fcrackzip.html

The original program spawns an external unzip binary when checking

password guesses (with the -u option). This is extremely slow, so I've

modified the code to use libzip instead. This speeds up guessing by

over a factor of 1000 on my laptop, even with SSD.

libzip is available on mst Linux distros. I believe this program is

largely obsoleted now if you have John the Ripper with the Jumbo patch.

In john-1.7.9-jumbo-7 you can just use zip2john and then run john.

  -- Howard Chu 

##### Original below #####

See fcrackzip.txt (which is derived from the manpage), or fcrackzip.html

There is a web page with more information at

http://lehmann.home.ml.org/fcrackzip.html or

http://www.goof.com/pcg/marc/fcrackzip.html

A sample password-protected .zip file is included as "noradi.zip". It's

password has 6 lower case characters, and fcrackzip will find it (and a

number of false positives) with

fcrackzip -b -c a -p aaaaaa ./noradi.zip

which will take between one and thirty minutes on typical machines.

To find out which of these passwords is the right one either try them out

or use the --use-unzip option.

Marc