2026weight 44.77Blue Hens

BlueHens CTF 2026

5 challenges with 6 published community solutions between them. Solution links go to CTFtime’s task page, which aggregates every writeup for a challenge - individual blog posts rot, the aggregator does not.

Full task list on CTFtime

Misc4

Everything that fits no other box: esolangs, puzzles, scripting exercises, and the jail escapes that have not yet earned their own category.

Solve it with:Brainfuck and esolang decoder Cipher identifier and automatic decoder Regex tester with match offsets and capture groups Learn: Recognising encodings

Eggs Over Easy
100 pts1 writeup
Same technique in picoCTF: Permissions, Specialer, Codebook
Magic Link 1
100 pts1 writeup
Same technique in picoCTF: Permissions, Specialer, Codebook
Magic Link 2
100 pts1 writeup
Same technique in picoCTF: Permissions, Specialer, Codebook
Magic Link 3
100 pts1 writeup
Same technique in picoCTF: Permissions, Specialer, Codebook

Cryptography1

Recover a plaintext or a key from something that was supposed to protect it. In practice: identify the scheme, find the parameter the author got wrong, exploit it.

Solve it with:Cipher identifier and automatic decoder Vigenere cipher solver with automatic key recovery RSA decryption and attack runner Wiener’s attack on small RSA private exponents In-browser hash cracker with rule transforms Learn: Classical ciphers and frequency analysis Learn: RSA and the parameters that break it

XORDECRYPT
100 pts2 writeups
Same technique in picoCTF: Custom encryption, triple-secure, XtraORdinary

Misc4

Eggs Over Easy

Magic Link 1

Magic Link 2

Magic Link 3

Cryptography1

XORDECRYPT

Other 2026 events