Beginner

• r/ciphers

• Pieces

• Name a more iconic band

• Simple RSA

• Shoob

• Quirky Resolution

• Joke Check!

• A Fine Day

• A Basic Challenge

Cryptography

• e

• Shakespeare Play Lost and found

• RubikCBC

• Occasionally Tested Protocol

• N-AES

• I Love Rainbows

• Adequate Encryption Standard

Forensics-OSINT

• Robin's Reddit Password

• PI 2: A Series of Tubes

• PI 1: Magic in the air

• Insanity Check

• Alien Transmission 1

Misc

• [insert creative algo chall name]

• [another witty algo challenge name]

• Ye Old PRNG

• Picking Up The Pieces

• Secure RSA

• Penguins

• Laser 2 Sorting

• Laser 1-Factoring

• Hallo?

• Differences

Pwn-Rev

• Five Fives

• Advanced Reversing Mechanics 2

• Too-Slow

• Object Oriented Programming

• Advanced Reversing Mechanics 1

Web

• Typeracer

• Tic Tac Toe

• Keen Eye

• Imitation Crab

• Countdown

ZTC

• vaporwave3

• vaporwave2

• vaporwave1

• peepdis

• icanhaz

• Ralphie!