zhirou
Solves
| Challenge | Category | Value | Time |
| Base64 | Warm Up | 20 | |
| What is ROT? | Cryptography | 50 | |
| Warm Up | Warm Up | 20 | |
| Beginner Reverse 2 | Reverse Engineering | 50 | |
| Beginner Reverse 3 | Reverse Engineering | 50 | |
| Beware of SHA1rk | Cryptography | 20 | |
| Julius Caesar | Cryptography | 100 | |
| IQ Test | Cryptography | 20 |