| Date | User | Challenge | Score |
| khuongchimdai | Hex | 5 | |
| lll111 | Confusion through Substitution | 25 | |
| khuongchimdai | ASCII | 5 | |
| Pu2zleError | Finding Flags | 2 | |
| khuongchimdai | Great Snakes | 3 | |
| khuongchimdai | Finding Flags | 2 | |
| lll111 | Round Keys | 20 | |
| AhmedQasem | You either know, XOR you don't | 30 | |
| AhmedQasem | Favourite byte | 20 | |
| mahi_m_103 | XOR Properties | 15 | |
| AhmedQasem | XOR Properties | 15 | |
| EveN | Working with Fields | 10 | |
| AhmedQasem | XOR Starter | 10 | |
| AhmedQasem | Bytes and Big Integers | 10 | |
| AhmedQasem | Base64 | 10 | |
| AhmedQasem | Hex | 5 | |
| Leizoe | Greatest Common Divisor | 15 | |
| AhmedQasem | ASCII | 5 | |
| AhmedQasem | Great Snakes | 3 | |
| Leizoe | XOR Properties | 15 | |
| EveN | Modulus Inutilis | 50 | |
| Leizoe | XOR Starter | 10 | |
| Pinkface | Finding Flags | 2 | |
| mowaleedkhan | Bytes and Big Integers | 10 | |
| AhmedQasem | Finding Flags | 2 | |
| Leizoe | Encoding Challenge | 40 | |
| watcharabest | XOR Starter | 10 | |
| Donatien | XOR Properties | 15 | |
| mahi_m_103 | XOR Starter | 10 | |
| P_BobXD | Hex | 5 | |
| lll111 | Structure of AES | 15 | |
| williehen | OR Proof (CryptoHack) | 0 | |
| williehen | OR Proof | 75 | |
| mowaleedkhan | Base64 | 10 | |
| anhsaoleloi | Parameter Injection | 60 | |
| Leizoe | Bytes and Big Integers | 10 | |
| rjakeeer | Legendre Symbol | 35 | |
| mowaleedkhan | Hex | 5 | |
| lll111 | Resisting Bruteforce | 10 | |
| Donatien | XOR Starter | 10 | |
| lll111 | Keyed Permutations | 5 | |
| kathleenah | Chinese Remainder Theorem | 40 | |
| ozora1 | Great Snakes | 3 | |
| ozora1 | Finding Flags | 2 | |
| xiazikang | Network Attacks | 5 | |
| starnotes | Edwards Goes Degenerate | 100 | |
| Donatien | Bytes and Big Integers | 10 | |
| haidar_rafli | Great Snakes | 3 | |
| haidar_rafli | Finding Flags | 2 | |
| watcharabest | Bytes and Big Integers | 10 |
You are now level Current level