| Date | User | Challenge | Score |
| rogue_1 | Hex | 5 | |
| ynwa_ | Confusion through Substitution | 25 | |
| FlukeStream | XOR Starter | 10 | |
| 0xSonic | Modular Arithmetic 1 | 20 | |
| FlukeStream | Bytes and Big Integers | 10 | |
| shivnihal | ASCII | 5 | |
| ayman711 | Finding Flags | 2 | |
| LACiA | Digestive | 60 | |
| rogue_1 | ASCII | 5 | |
| FlukeStream | Base64 | 10 | |
| yvsmeen | RSA Decryption | 20 | |
| FlukeStream | Hex | 5 | |
| FlukeStream | ASCII | 5 | |
| taboctf | Too Many Errors | 100 | |
| theegg | XOR Properties | 15 | |
| shivnihal | Great Snakes | 3 | |
| yvsmeen | Private Keys | 20 | |
| FlukeStream | Great Snakes | 3 | |
| FlukeStream | Finding Flags | 2 | |
| Kiemar | Finding Flags | 2 | |
| abycet | Modular Inverting | 25 | |
| taboctf | The Matrix Reloaded | 100 | |
| ZhangJing | Favourite byte | 20 | |
| LACiA | Real Curve Crypto | 200 | |
| yvsmeen | Euler's Totient | 20 | |
| ahestevenz | Favourite byte | 20 | |
| shivnihal | Finding Flags | 2 | |
| yvsmeen | Public Keys | 15 | |
| LACiA | An Evil Twisted Mind | 175 | |
| taboctf | The Good, The Pad, The Ugly | 100 | |
| darkblitz_ | Extended GCD | 20 | |
| yvsmeen | Modular Exponentiation | 10 | |
| darkblitz_ | Greatest Common Divisor | 15 | |
| taboctf | Static Client | 100 | |
| darkblitz_ | You either know, XOR you don't | 30 | |
| ZhangJing | XOR Properties | 15 | |
| darkblitz_ | Favourite byte | 20 | |
| taboctf | RSA or HMAC? Part 2 | 100 | |
| MuhaiminHasanein | Armory | 100 | |
| MuhaiminHasanein | Bit by Bit | 100 | |
| faresss | Bytes and Big Integers | 10 | |
| LAIZIG | Great Snakes | 3 | |
| SwatSecOne | Export-grade | 100 | |
| SwatSecOne | Parameter Injection | 60 | |
| faresss | Base64 | 10 | |
| taboctf | ProSign 3 | 100 | |
| SwatSecOne | Deriving Symmetric Keys | 40 | |
| LAIZIG | Finding Flags | 2 | |
| SwatSecOne | Computing Shared Secrets | 30 | |
| faresss | Hex | 5 |
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