| WOTS Up 2 | 0 |
| Hash Functions | WOTS Up 2 | 90 | |
| Introduction | Network Attacks | 5 | |
| Hash Functions | WOTS Up | 75 | |
| Hash Functions | Merkle Trees | 25 | |
| Hash Functions | Hash Stuffing | 50 | |
| Hash Functions | Collider | 50 | |
| Hash Functions | Jack's Birthday Confusion | 30 | |
| Hash Functions | Jack's Birthday Hash | 20 | |
| General | Extended GCD | 20 | |
| General | Greatest Common Divisor | 15 | |
| General | You either know, XOR you don't | 30 | |
| General | Favourite byte | 20 | |
| General | XOR Properties | 15 | |
| General | XOR Starter | 10 | |
| General | Bytes and Big Integers | 10 | |
| General | Base64 | 10 | |
| General | Hex | 5 | |
| General | ASCII | 5 | |
| Introduction | Great Snakes | 3 | |
| Introduction | Finding Flags | 2 |
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