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

License: GNU General Public License v2.0

C 52.46% Shell 20.08% Perl 1.70% Makefile 14.29% Roff 5.21% HTML 6.27%

fcrackzip's Introduction

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 <[email protected]>

##### 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

fcrackzip's People

Contributors

hyc avatar

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