Overview
This starter course gets you up and running with CryptoHack. You'll learn to encode and decode data types that are commonly used in cryptography. Then you'll get comfortable with the XOR operation which is at the centre of symmetric cryptography. Finally, the course ends with some fun XOR puzzles to test what you've learned.
CryptoHack is free to play and browse. If you need help or want to find out more details about the site, please first read the FAQ. If you want to interact with the community, check out the Discord chat linked on the sidebar.
72001 Players Solving
21921 Players Completed
110 Points to Earn
Contents
| Category | Challenge | Points | |
| Introduction - Challenges | Finding Flags | 2 | |
| Introduction - Challenges | Great Snakes | 3 | |
| General - Encoding | ASCII | 5 | |
| General - Encoding | Hex | 5 | |
| General - Encoding | Base64 | 10 | |
| General - Encoding | Bytes and Big Integers | 10 | |
| General - XOR | XOR Starter | 10 | |
| General - XOR | XOR Properties | 15 | |
| General - XOR | Favourite byte | 20 | |
| General - XOR | You either know, XOR you don't | 30 |
