| Date | User | Challenge | Score |
| toomuchcoffee | Deriving Symmetric Keys | 40 | |
| probablyABot | ASCII | 5 | |
| AndresSinclair | Favourite byte | 20 | |
| probablyABot | Great Snakes | 3 | |
| AndresSinclair | XOR Properties | 15 | |
| cyberatjad | Blind (ECSC 2023 (Norway)) | 0 | |
| predat0r | Bytes and Big Integers | 10 | |
| toomuchcoffee | Computing Shared Secrets | 30 | |
| toomuchcoffee | Computing Public Values | 25 | |
| predat0r | Base64 | 10 | |
| wkimann | Finding Flags | 2 | |
| predat0r | Hex | 5 | |
| AndresSinclair | XOR Starter | 10 | |
| duckpancakes | Private Keys | 20 | |
| predat0r | You either know, XOR you don't | 30 | |
| AndresSinclair | Bytes and Big Integers | 10 | |
| Neilster | No Way Back Home | 100 | |
| cyberatjad | Jeff's LFSR | 150 | |
| walid_z1 | Curveball | 100 | |
| ericrdavis | Great Snakes | 3 | |
| noncanonical | Legendre Symbol | 35 | |
| ericrdavis | Finding Flags | 2 | |
| Mahmoud_778 | Parameter Injection | 60 | |
| jakobl | XOR Properties | 15 | |
| Mahmoud_778 | Deriving Symmetric Keys | 40 | |
| Mahmoud_778 | Computing Shared Secrets | 30 | |
| Mahmoud_778 | Computing Public Values | 25 | |
| Oswald | Key recovery (DCTF) | 0 | |
| Mahmoud_778 | Working with Fields | 10 | |
| hsyn | Extended GCD | 20 | |
| duckpancakes | Euler's Totient | 20 | |
| 3662_2C2026_G8 | Modulus Inutilis | 50 | |
| hungtrab | Honest Verifier Zero Knowledge | 30 | |
| NewCryptoHackUse | Bytes and Big Integers | 10 | |
| hsyn | Greatest Common Divisor | 15 | |
| Mahmoud_778 | Forbidden Fruit | 150 | |
| Mahmoud_778 | Beatboxer | 150 | |
| 0xB4DFL4G | Monoprime | 30 | |
| Ronak48 | Forbidden Fruit | 150 | |
| Ronak48 | The Good, The Pad, The Ugly | 100 | |
| Ronak48 | Pad Thai | 80 | |
| Ronak48 | Dancing Queen | 120 | |
| Ronak48 | Logon Zero | 80 | |
| Mahmoud_778 | Paper Plane | 120 | |
| Mahmoud_778 | Oracular Spectacular | 150 | |
| 25164428 | Computing Public Values | 25 | |
| 25164428 | Computing Shared Secrets | 30 | |
| Mahmoud_778 | The Good, The Pad, The Ugly | 100 | |
| Mahmoud_778 | Pad Thai | 80 | |
| Mahmoud_778 | Oh SNAP | 120 |
You are now level Current level