kcl cybersoc presents
welcome
ctf
a capture the flag for total beginners. no experience needed.
invisible ink, nice find: KCLCTF{1nv1s1bl3_1nk}
the plan
14:00briefing: what a ctf is, how to play, which tools
14:30hacking opens. 1 hour.
15:30walkthroughs of the ones nobody cracked
how to play
- register now, then open challenges at 14:30.
- every challenge hides a flag. paste it in to score, e.g. KCLCTF{s33_y0u_th3r3}. each description says its format.
- start with anything tagged browser-only. stuck? every challenge has a free hint.
- top score at 15:30 wins an amazon gift card.
tools that run in your browser
- cyberchef: decode anything (base64, hex, rot13...)
- hexed.it: look inside and edit any file
- aperi'solve: hidden data in images
- your browser's dev tools (f12): page source, network requests, javascript
rules
- play solo. don't attack the scoreboard or other players, only the challenges.
- don't share flags. ask us for help instead, that's what we're here for.