aeondave/fcrackzip
offensive-tools/cracking/fcrackzip/SKILL.md
Auth/lab ref: ZIP password-cracking utility for dictionary and brute-force testing. For you need a focused CLI workflow against password-protected ZIP archives before escalating to heavier cracking stacks.
$ install --global
skillsauthnpx skillsauth add aeondave/malskill fcrackzipInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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TrivyContainer and dependency vulnerability scanner
95%
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95%
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Last scanned: Jun 8, 2026, 3:42 AM132.0s1 file scanned
SKILL.md
- name:
- fcrackzip
- description:
- Auth/lab ref: ZIP password-cracking utility for dictionary and brute-force testing. For you need a focused CLI workflow against password-protected ZIP archives before escalating to heavier cracking stacks.
- compatibility:
- Linux, macOS, WSL; package-manager friendly; ZIP archives only.
- author:
- AeonDave
- version:
- 1.0
fcrackzip
Specialist ZIP password cracking with less ceremony than the bigger frameworks.
When to use fcrackzip
Use fcrackzip when you need to:
- test a ZIP archive against a wordlist quickly
- brute-force a narrow password space for ZIP only
- verify whether a known candidate password opens the archive
Quick Start
# Dictionary attack and verify extraction
fcrackzip -D -p rockyou.txt -u archive.zip
# Brute-force simple character sets
fcrackzip -b -c 1aA -l 1-8 -u archive.zip
Practical Notes
-uverifies the password against unzip logic instead of only reporting a guess.- Start with a dictionary attack unless you have strong evidence the keyspace is tiny.
- If the archive source is known, build targeted masks before going full brute force.
Caveats
- ZIP-only specialization is its strength and its boundary.
- Brute force becomes painful fast; switch to better-targeted tooling when entropy rises.
- Some workflows are better served by
johnorhashcatonce you extract the relevant hash material.
Resources
No bundled scripts/, references/, or assets/.
Use the local man page for charset syntax and mode details.
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