# CyberSecurityRumble CTF

CyberSecurityRumble 2021 was held from 27 November to 29 November and organized by RedRocket. We managed to get 16th place on the global leaderboard!

### Level 1

| Challenge                                                                                            | Category          | Points |
| ---------------------------------------------------------------------------------------------------- | ----------------- | ------ |
| [Stonks Street Journal](https://ctf.zeyu2001.com/2021/cybersecurityrumble-ctf/stonks-street-journal) | Web, Exploitation | 100    |

### Level 2

| Challenge                                                                                                                                                                                      | Category          | Points   |
| ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------- | -------- |
| [PayBack](https://ctf.zeyu2001.com/2021/cybersecurityrumble-ctf/payback)                                                                                                                       | Web, Cryptography | 200 + 80 |
| [Enterprice File Sharing](https://ctf.zeyu2001.com/2021/cybersecurityrumble-ctf/enterprice-file-sharing)                                                                                       | Web               | 150 + 87 |
| [Personal Encryptor with Nonbreakable Inforation-theoretic Security](https://ctf.zeyu2001.com/2021/cybersecurityrumble-ctf/personal-encryptor-with-nonbreakable-inforation-theoretic-security) | Cryptography      | 200 + 20 |

### Level 3

| Challenge                                                                                                | Category                   | Points    |
| -------------------------------------------------------------------------------------------------------- | -------------------------- | --------- |
| [Finance Calculat0r 2021](https://ctf.zeyu2001.com/2021/cybersecurityrumble-ctf/finance-calculat0r-2021) | Exploitation, Cryptography | 200 + 80  |
| [Lukas App](https://ctf.zeyu2001.com/2021/cybersecurityrumble-ctf/lukas-app)                             | Web                        | 300 + 294 |