| Date | User | Challenge | Score |
| m_ee_b | XOR Properties | 15 | |
| Adeka228 | The Matrix | 75 | |
| txd0 | Network Attacks | 5 | |
| m_ee_b | XOR Starter | 10 | |
| m_ee_b | Bytes and Big Integers | 10 | |
| Raha7 | Hex | 5 | |
| m_ee_b | Base64 | 10 | |
| WarSpore | Lazy CBC | 60 | |
| drnikos | Passwords as Keys | 50 | |
| 0xmhmdnsar | Private Keys | 20 | |
| airconditioner4 | Factoring | 15 | |
| Reariuz | Greatest Common Divisor | 15 | |
| 0xmhmdnsar | Euler's Totient | 20 | |
| learnercryptohac | Legendre Symbol | 35 | |
| Raha7 | ASCII | 5 | |
| Raha7 | Great Snakes | 3 | |
| m_ee_b | Hex | 5 | |
| m_ee_b | ASCII | 5 | |
| Raha7 | Finding Flags | 2 | |
| drnikos | Modes of Operation Starter | 15 | |
| WarSpore | The Matrix | 75 | |
| Adeka228 | Script Kiddie | 70 | |
| vzal0308 | Twist and shout (ECSC 2023 (Norway)) | 0 | |
| vzal0308 | Tenet: The Plagarism (HKCERT CTF) | 0 | |
| mpg | Additive | 70 | |
| drnikos | Bringing It All Together | 50 | |
| mgoldie | Finding Flags | 2 | |
| Adeka228 | Static Client 2 | 120 | |
| Adeka228 | Additive | 70 | |
| Adeka228 | Static Client | 100 | |
| Adeka228 | Export-grade | 100 | |
| Aisultan | Blinding Light | 120 | |
| AndyVale | Roll your Own | 125 | |
| Adeka228 | Parameter Injection | 60 | |
| Aisultan | Let's Decrypt Again | 175 | |
| Adeka228 | Deriving Symmetric Keys | 40 | |
| Adeka228 | Computing Shared Secrets | 30 | |
| vzal0308 | Key Backup Service 2 (HKCERT CTF) | 0 | |
| Adeka228 | Computing Public Values | 25 | |
| Adeka228 | Generators of Groups | 20 | |
| SJacovettiJr | Legendre Symbol | 35 | |
| Adeka228 | Working with Fields | 10 | |
| Aisultan | Inferius Prime | 30 | |
| Aisultan | Vote for Pedro | 150 | |
| Sanyokva | Extended GCD | 20 | |
| WarSpore | Script Kiddie | 70 | |
| deathknight | Megalomaniac 2 | 120 | |
| Aisultan | Let's Decrypt | 80 | |
| Aisultan | Signing Server | 60 | |
| Aisultan | Null or Never | 100 |
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