rennfurukawa
Solves
| Challenge | Category | Value | Time |
| Warm Up | Warm Up | 20 | |
| Base64 | Warm Up | 20 | |
| QR | Warm Up | 20 | |
| Net Cat | Warm Up | 20 | |
| Secure Shell | Warm Up | 20 | |
| Discord | Warm Up | 10 | |
| Beginner Reverse 1 | Reverse Engineering | 50 | |
| Forensics Warm Up 1 | Forensics | 20 | |
| What is ROT? | Cryptography | 50 | |
| Web warmup | Web | 20 | |
| Simple Overflow | Binary | 20 | |
| Auth Me 1.0 | Binary | 20 | |
| Format String | Binary | 20 |