| Date | User | Challenge | Score |
| yuliyost | RSA Signatures | 25 | |
| ash3rly | Modular Binomials | 80 | |
| DavidTruong | Exceptional Curves | 100 | |
| Linn | Modular Arithmetic 2 | 20 | |
| jh02 | Modular Binomials | 80 | |
| daVinciLeo | Greatest Common Divisor | 15 | |
| Catropic | Greatest Common Divisor | 15 | |
| creep3r | XOR Starter | 10 | |
| 3kn0ch | Favourite byte | 20 | |
| Srimathi | Finding Flags | 2 | |
| AlanSolev | Modular Arithmetic 1 | 20 | |
| crypto_saka_hack | Hash Stuffing | 50 | |
| Catropic | You either know, XOR you don't | 30 | |
| un5h4d0w | Modular Square Root | 35 | |
| lhr | Bespoke Padding | 100 | |
| peterhack | CTRIME | 70 | |
| lhr | Signing Server | 60 | |
| Bomotosho | Finding Flags | 2 | |
| humoyun | You either know, XOR you don't | 30 | |
| cyk0sure | Bespoke Padding | 100 | |
| peterhack | Bean Counter | 60 | |
| d3v_k1r4 | Greatest Common Divisor | 15 | |
| 0xs1nr | Adrien's Signs | 80 | |
| KMA_SiriuS_ | Computing Public Values | 25 | |
| jh02 | Adrien's Signs | 80 | |
| humoyun | Favourite byte | 20 | |
| ash3rly | Adrien's Signs | 80 | |
| anush | Great Snakes | 3 | |
| KMA_SiriuS_ | Generators of Groups | 20 | |
| crypto_saka_hack | Collider | 50 | |
| ash3rly | Chinese Remainder Theorem | 40 | |
| un5h4d0w | Legendre Symbol | 35 | |
| humoyun | Hex | 5 | |
| AlanSolev | Extended GCD | 20 | |
| cryptoRiO | 1337crypt (DownUnderCTF) | 0 | |
| ash3rly | Modular Square Root | 35 | |
| anush | Finding Flags | 2 | |
| Linn | Modular Arithmetic 1 | 20 | |
| Soul_eye | Base64 | 10 | |
| Catropic | Favourite byte | 20 | |
| TTiny | Modular Arithmetic 2 | 20 | |
| sondofootman | You either know, XOR you don't | 30 | |
| sondofootman | Favourite byte | 20 | |
| sondofootman | XOR Properties | 15 | |
| sondofootman | XOR Starter | 10 | |
| sondofootman | Bytes and Big Integers | 10 | |
| Linn | Extended GCD | 20 | |
| ash3rly | Legendre Symbol | 35 | |
| sondofootman | Base64 | 10 | |
| sondofootman | Hex | 5 |
You are now level Current level