xuanyi
Solves
| Challenge | Category | Value | Time |
| Base64 | Warm Up | 20 | |
| QR | Warm Up | 20 | |
| What is ROT? | Cryptography | 50 | |
| Julius Caesar | Cryptography | 100 | |
| Net Cat | Warm Up | 20 | |
| Beginner Reverse 1 | Reverse Engineering | 50 | |
| Warm Up | Warm Up | 20 | |
| Web warmup | Web | 20 | |
| I am Samuel Morse! | Cryptography | 100 | |
| Simple RSA | Cryptography | 20 | |
| Year 1993 by Urban Müller | Cryptography | 300 | |
| I am Samuel Morse 2! | Cryptography | 200 | |
| Simple Diffie-Hellman | None | 20 | |
| Fermat's RSA | None | 20 | |
| Simple RSA 2 | Cryptography | 20 | |
| My First SQL | Web | 20 | |
| Linux Tutorial 1 | Linux | 20 | |
| Beginner Reverse 2 | Reverse Engineering | 50 | |
| Kuki Cookies | Web | 20 | |
| Kuki Cookies 2 | Web | 20 | |
| File Signature | Forensics | 20 | |
| Beginner Reverse 3 | Reverse Engineering | 50 | |
| Beginner Reverse 4 | Reverse Engineering | 50 | |
| Beginner Reverse 5 | Reverse Engineering | 50 | |
| Beginner Reverse 6 | Reverse Engineering | 50 | |
| Ular Challenge 1 | None | 20 | |
| Wiener's RSA | None | 20 | |
| Forensics Warm Up 1 | Forensics | 20 | |
| Forensics Warm Up 2 | Forensics | 50 | |
| Hex To ASCII | Mini Game | 100 | |
| File Signature 2 | Forensics | 20 | |
| My First XSS | Web | 20 |