fcrackzip

fcrackzip is a command-line utility that is used to crack password-protected zip files. It is available for Unix-like systems and Windows.

Installing fcrackzip

To install fcrackzip, you need to download the source code from the official website, compile it, and then install it. Alternatively, you can install it using a package manager like apt-get on Ubuntu.

# Installing fcrackzip on Ubuntu
sudo apt-get install fcrackzip

Using fcrackzip

To use fcrackzip, you need to provide the path to the zip file and the wordlist (a file containing a list of possible passwords). You can also specify the minimum and maximum length of the password and the number of threads to use for cracking.

# Cracking a zip file with fcrackzip
fcrackzip -v -u -D -p /path/to/wordlist.txt /path/to/zipfile.zip

Here's what each option means:

• -v: Verbose output
• -u: Try to unzip the file
• -D: Use the traditional zip encryption instead of the stronger AES encryption
• -p: Path to the wordlist file

Conclusion

fcrackzip is a powerful command-line tool for cracking password-protected zip files. With the right wordlist and parameters, it can be an effective tool for recovering lost password-protected zip files.