| Date | User | Challenge | Score |
| kidoB | Hex | 5 | |
| anarolo | Finding Flags | 2 | |
| tera | Encoding Challenge | 40 | |
| voxrey | XOR Starter | 10 | |
| kidoB | ASCII | 5 | |
| 01169322 | Broken RSA | 100 | |
| khalid_salad | Export-grade | 100 | |
| Aziz_ouer | ASCII | 5 | |
| kidoB | Great Snakes | 3 | |
| Aziz_ouer | Network Attacks | 5 | |
| voxrey | Bytes and Big Integers | 10 | |
| kidoB | Finding Flags | 2 | |
| PatrickL_SC | Curves and Logs | 40 | |
| voxrey | Base64 | 10 | |
| ion9368 | You either know, XOR you don't | 30 | |
| voxrey | Hex | 5 | |
| voxrey | ASCII | 5 | |
| Aziz_ouer | Great Snakes | 3 | |
| voxrey | Great Snakes | 3 | |
| Aziz_ouer | Finding Flags | 2 | |
| voxrey | Finding Flags | 2 | |
| Knic | Modular Square Root | 35 | |
| grabczak | Saying Hello | 20 | |
| Banana_Babanana | You either know, XOR you don't | 30 | |
| nathan_brt | Legendre Symbol | 35 | |
| swiftnode | Finding Flags | 2 | |
| tera | Network Attacks | 5 | |
| PatrickL_SC | Scalar Multiplication | 35 | |
| habi | Extended GCD | 20 | |
| Knic | Legendre Symbol | 35 | |
| B00177175_Andre | Generators of Groups | 20 | |
| omarafal | XOR Properties | 15 | |
| rflsaa | Resisting Bruteforce | 10 | |
| B00177175_Andre | Working with Fields | 10 | |
| rflsaa | Keyed Permutations | 5 | |
| 6iroc | XOR Starter | 10 | |
| grabczak | TLS Handshake | 15 | |
| 6iroc | Bytes and Big Integers | 10 | |
| vaggelisarg13 | Flipping Cookie | 60 | |
| Banana_Babanana | Favourite byte | 20 | |
| Banana_Babanana | XOR Properties | 15 | |
| Banana_Babanana | XOR Starter | 10 | |
| Banana_Babanana | Encoding Challenge | 40 | |
| Banana_Babanana | Bytes and Big Integers | 10 | |
| PatrickL_SC | Point Addition | 30 | |
| ion9368 | Favourite byte | 20 | |
| vaggelisarg13 | Bean Counter | 60 | |
| omarafal | XOR Starter | 10 | |
| hellcrypto | Working with Fields | 10 | |
| lume | Finding Flags | 2 |
You are now level Current level