$ ctf42

ZIP

Crypto No technique tags yet.
Difficulty Not rated yet

Flag format: CTF{...}

Someone rolled their own implementation of PKZIP-compatible encryption to produce an encrypted ZIP file. The PKZIP-compatible cipher is old and known to be weak, but did the author leak sufficient information for you to decrypt the flag?

Writeups

Official

No official writeup linked.

Community

No community writeups yet. Solved it? Share how.

Log in to add a community writeup.