This repository houses all of the challenges that we have used, or will use, in CTFs organised by Cyber Youth Singapore.
This is the list of challenges within this repository. Unfortunately for now, this list has to be manually updated. Eventually, we'll shift to automatically building this list by walking the directories in this repository.
| Name | Category | Difficulty |
|---|---|---|
| sample-challenge | OSINT | Easy |
| prince-haus | OSINT | Easy |
| east-india-company | OSINT | Easy |
| sophia-hull | OSINT | Easy |
| hey-thats-pretty-good | OSINT | Medium |
| pierce-the-veil | OSINT | Medium |
| domo-arigato-mr-roboto | Web Exploitation | Easy |
| no-comment | Web Exploitation | Easy |
| whole-lotta-spam | Web Exploitation | Easy |
| hot-off-the-presses | Web Exploitation | Medium |
| Injection | Web Exploitation | Medium |
| Flagstore | Web Exploitation | Medium |
| bonjour | Cryptography | Easy |
| football | Cryptography | Easy |
| humpty-dumpty | Cryptography | Easy |
| dictionary | Cryptography | Medium |
| Asymmetric-1.0 | Cryptography | Medium |
| Asymmetric-2.0 | Cryptography | Hard |
| let-it-snow | Forensics | Easy |
| bug-in-the-woods | Forensics | Medium |
| treasure-chest | Forensics | Medium |
| professional-slacker | Forensics | Hard |
| insignificant | Forensics | Hard |
| magnify | Misc | Easy |
| basic | Misc | Easy |
| box | Misc | Easy |
| abstract | Misc | Medium |
| unibase | Misc | Medium |
| pixelate | Misc | Hard |
| coffee | RE | Easy |
| string-cheese | RE | Easy |
| recall | RE | Medium |
| wow-thats-fancy | RE | Medium |
| Rox | RE | Hard |
| arp-spoofed | Networking | Easy |
| follow-that-stream | Networking | Easy |
| Networking | Easy | |
| frontier | Networking | Easy |
| carve-that-flag | Networking | Medium |
| look-closer | Networking | Medium |
| horseback | Programming | Easy |
| optical | Programming | Medium |
| ezpwn | pwn | Easy |
Every challenge folder will have a README.md file that details what the challenge is about and how to solve it. The following explains the folders and their role.
distribcontains all distributable files for all usersgeneratecontains all relevant source code used to generate the challenge (if not in service directory)servicecontains all the files needed to host the challenge on a serversolutioncontains all the solution scripts or files.
Challenges that require hosting uses Docker to isolate the challenges.
To install Docker for the common Linux distributions, run the script at: https://get.docker.com/
- Change your directory to the challenge you would wish to host.
- Run the
build.shscripts in either the root directory of the challenge or the service directory. - Type
docker inspect <containername>or enter the docker viadocker exec -it <containername> shandifconfigto find the IP address and head to that IP. - When attempting the challenges in your local setup, do take note to change all
*.cyberyouth.sgto your local ip
Cyber Youth Singapore would like to thank the following contributors and challenge authors: