| Date | User | Challenge | Score |
| cqnh | Public Keys | 15 | |
| cqnh | Modular Exponentiation | 10 | |
| y0dam4n | Hex | 5 | |
| shangzhe | Finding Flags | 2 | |
| dawdcxfca213 | Favourite byte | 20 | |
| Mirai_M11 | Structure of AES | 15 | |
| Huyyeuthu2104 | Bringing It All Together | 50 | |
| y0dam4n | ASCII | 5 | |
| dawdcxfca213 | XOR Properties | 15 | |
| Mathys | Monoprime | 30 | |
| y0dam4n | Network Attacks | 5 | |
| Mirai_M11 | Resisting Bruteforce | 10 | |
| Mirai_M11 | Keyed Permutations | 5 | |
| Mathys | Factoring | 15 | |
| lixz | Base64 | 10 | |
| dawdcxfca213 | XOR Starter | 10 | |
| Mathys | RSA Signatures | 25 | |
| malvvina | XOR Properties | 15 | |
| lixz | Hex | 5 | |
| zirajs | Network Attacks | 5 | |
| 1502dth | Confusion through Substitution | 25 | |
| zirajs | Great Snakes | 3 | |
| zirajs | Finding Flags | 2 | |
| lixz | ASCII | 5 | |
| TodaylunchRamen | Export-grade | 100 | |
| clemensGooooo | Proofs of Knowledge | 20 | |
| lixz | Great Snakes | 3 | |
| amr_hassan | Lemur XOR | 40 | |
| hungthinh | Stream of Consciousness | 80 | |
| dawdcxfca213 | Bytes and Big Integers | 10 | |
| Huyyeuthu2104 | Diffusion through Permutation | 30 | |
| dawdcxfca213 | Base64 | 10 | |
| dawdcxfca213 | Hex | 5 | |
| wind | ASCII | 5 | |
| dawdcxfca213 | ASCII | 5 | |
| lixz | Finding Flags | 2 | |
| Na_0_sy | Parameter Injection | 60 | |
| dawdcxfca213 | Great Snakes | 3 | |
| 1502dth | Round Keys | 20 | |
| tkhnnh | You either know, XOR you don't | 30 | |
| dawdcxfca213 | Finding Flags | 2 | |
| hungthinh | CTRIME | 70 | |
| Schmezz | Finding Flags | 2 | |
| Na_0_sy | Deriving Symmetric Keys | 40 | |
| wind | Great Snakes | 3 | |
| anchi1228 | Modular Inverting | 25 | |
| anchi1228 | Modular Arithmetic 2 | 20 | |
| tkhnnh | Favourite byte | 20 | |
| IRIS_444 | Finding Flags | 2 | |
| tkhnnh | XOR Properties | 15 |
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