katsud0n
Solves
| Challenge | Category | Value | Time |
| De Tuna My Fish | Cryptography | 20 | |
| Warm Up | Warm Up | 20 | |
| Julius Caesar | Cryptography | 100 | |
| Base64 | Warm Up | 20 | |
| QR | Warm Up | 20 | |
| Net Cat | Warm Up | 20 | |
| Secure Shell | Warm Up | 20 | |
| Discord | Warm Up | 10 | |
| What is ROT? | Cryptography | 50 | |
| Patience Test | Warm Up | 300 | |
| Forensics Warm Up 1 | Forensics | 20 | |
| Year 1993 by Urban Müller | Cryptography | 300 | |
| I am Samuel Morse! | Cryptography | 100 | |
| IQ Test | Cryptography | 20 | |
| I am Samuel Morse 2! | Cryptography | 200 | |
| Beware of SHA1rk | Cryptography | 20 | |
| Recette Secrète | Cryptography | 20 | |
| E-CryptoBook Service | Cryptography | 20 | |
| Simple Diffie-Hellman | None | 20 | |
| Wiener's RSA | None | 20 | |
| Fermat's RSA | None | 20 | |
| Simple Diffie-Hellman 2 | None | 20 | |
| SKR Lang | Cryptography | 20 | |
| Small-E | None | 20 | |
| Simple RSA | Cryptography | 20 | |
| E-CryptoBook 2.0 | Cryptography | 20 | |
| E-CryptoBook 3.0 | Cryptography | 112 | |
| Simple RSA 2 | Cryptography | 20 | |
| Xtra ObscuRe Service | Cryptography | 20 | |
| Simple Overflow | Binary | 20 | |
| Stegnography 1 | Steganography | 100 | |
| Quick Survey | Warm Up | 400 | |
| Small-E 2 | None | 20 | |
| Stegnography 3 | Steganography | 200 | |
| A Thousand Words | Steganography | 20 | |
| Linux Tutorial 1 | Linux | 20 | |
| Linux Tutorial 2 | Linux | 20 | |
| Linux Tutorial 3 | None | 20 | |
| Linux Tutorial 4 | None | 20 | |
| Find it! | OSINT | 500 | |
| Schrödinger's Cat | Miscellaneous | 20 | |
| de Bruijn's flag | None | 20 | |
| Calculator | Miscellaneous | 20 |