| Date | User | Challenge | Score |
| Marvin_cheruiyot | Hex | 5 | |
| stanley_166601 | Resisting Bruteforce | 10 | |
| Marvin_cheruiyot | ASCII | 5 | |
| stanley_166601 | Keyed Permutations | 5 | |
| Fufu142857 | Greatest Common Divisor | 15 | |
| Marvin_cheruiyot | Great Snakes | 3 | |
| airs | XOR Starter | 10 | |
| Marvin_cheruiyot | Finding Flags | 2 | |
| radare | Blind (ECSC 2023 (Norway)) | 0 | |
| airs | Bytes and Big Integers | 10 | |
| Yo_Karim | Finding Flags | 2 | |
| tomm_6294 | Finding Flags | 2 | |
| airs | Base64 | 10 | |
| airs | Hex | 5 | |
| airs | ASCII | 5 | |
| airs | Great Snakes | 3 | |
| airs | Finding Flags | 2 | |
| Cheeb13 | XOR Starter | 10 | |
| phat1911 | Parameter Injection | 60 | |
| Charvey | Bytes and Big Integers | 10 | |
| PUTELLAS_102 | You either know, XOR you don't | 30 | |
| PUTELLAS_102 | Favourite byte | 20 | |
| PUTELLAS_102 | XOR Properties | 15 | |
| PUTELLAS_102 | XOR Starter | 10 | |
| PatriciahMbua | Manyprime | 40 | |
| phat1911 | Deriving Symmetric Keys | 40 | |
| CYDF1121 | ECB CBC WTF | 55 | |
| Nadarama | Favourite byte | 20 | |
| 0xftp | Manyprime | 40 | |
| phat1911 | Computing Shared Secrets | 30 | |
| phat1911 | Computing Public Values | 25 | |
| 0xftp | Monoprime | 30 | |
| phat1911 | Generators of Groups | 20 | |
| jkendall | Parameter Injection | 60 | |
| jimun | RSA Decryption | 20 | |
| sejin | Modular Arithmetic 2 | 20 | |
| MnN | Great Snakes | 3 | |
| MnN | Finding Flags | 2 | |
| 0xftp | Factoring | 15 | |
| KyleLee | Flipping Cookie | 60 | |
| highwayhike | XOR Starter | 10 | |
| g00d3 | Hex | 5 | |
| 0xftp | RSA Signatures | 25 | |
| Coliin | Legendre Symbol | 35 | |
| g00d3 | ASCII | 5 | |
| g00d3 | Network Attacks | 5 | |
| sejin | Greatest Common Divisor | 15 | |
| phat1911 | Working with Fields | 10 | |
| Coliin | Quadratic Residues | 25 | |
| jimun | Modular Binomials | 80 |
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