| Date | User | Challenge | Score |
| conor13rp | Adrien's Signs | 80 | |
| madness57 | Resisting Bruteforce | 10 | |
| hamka | Modular Inverting | 25 | |
| viru09ctf | Base64 | 10 | |
| hamka | Modular Arithmetic 2 | 20 | |
| afrdian | Exceptional Curves | 100 | |
| hamka | Modular Arithmetic 1 | 20 | |
| hamka | Extended GCD | 20 | |
| madness57 | Keyed Permutations | 5 | |
| viru09ctf | Hex | 5 | |
| hamka | Greatest Common Divisor | 15 | |
| lpqtan | Favourite byte | 20 | |
| lpqtan | XOR Properties | 15 | |
| conor13rp | Successive Powers | 60 | |
| Sabrinadewinda | Modes of Operation Starter | 15 | |
| lpqtan | XOR Starter | 10 | |
| lpqtan | Bytes and Big Integers | 10 | |
| viru09ctf | ASCII | 5 | |
| cyberri | Hash Stuffing | 50 | |
| Ayuwandira | Parameter Injection | 60 | |
| devilharsh | Favourite byte | 20 | |
| Heba_Ajjour | ECB Oracle | 60 | |
| viru09ctf | Great Snakes | 3 | |
| conor13rp | Chinese Remainder Theorem | 40 | |
| Sallyta01 | Bytes and Big Integers | 10 | |
| viru09ctf | Finding Flags | 2 | |
| Ayuwandira | Export-grade | 100 | |
| Kiwi64bit | Adrien's Signs | 80 | |
| devilharsh | XOR Properties | 15 | |
| hynxio | Modes of Operation Starter | 15 | |
| Ayuwandira | Deriving Symmetric Keys | 40 | |
| Nikaru | Base64 | 10 | |
| Ayuwandira | Computing Shared Secrets | 30 | |
| sixsquareAI | RRSSAA (ECSC 2023 (Norway)) | 0 | |
| Momina | Finding Flags | 2 | |
| Ayuwandira | Computing Public Values | 25 | |
| s3nura | Great Snakes | 3 | |
| s3nura | Finding Flags | 2 | |
| devilharsh | XOR Starter | 10 | |
| hynxio | Bringing It All Together | 50 | |
| chGao | Bytes and Big Integers | 10 | |
| jonnytang | Efficient Exchange | 50 | |
| solidus | Mixed Up | 120 | |
| devilharsh | Bytes and Big Integers | 10 | |
| vinc3nt | XOR Starter | 10 | |
| MrGl1tchNu11 | Bringing It All Together | 50 | |
| sixsquareAI | Put a ring on it (ECSC 2023 (Norway)) | 0 | |
| vinc3nt | Encoding Challenge | 40 | |
| jonnytang | Curves and Logs | 40 | |
| chGao | Base64 | 10 |
You are now level Current level