$ ./ctf --start

CTF Arena

Capture the flag, learn the concept. Seven tracks, three levels each, from your first port number to reading attacker logs. Every puzzle is self-contained and safe to solve right here in your browser.

Pick a track My results
0%overall
Rank
Recruit
XP
0
Score
0
Day streak
0

Checking the scoreboard server…

// choose your track

Seven tracks. Three levels each.

Beginner questions are worth 10 marks, Intermediate 20 and Expert 30. Score 60% on a level to unlock the next one.

Your player

Practice mode keeps your best scores in this browser only. Nothing is sent anywhere.

Leaderboard

    How scoring works
    • Each level has about 5 or 6 questions: 10 marks each at Beginner, 20 at Intermediate, 30 at Expert.
    • Multiple choice: one attempt. Ordering questions: 3 attempts. Typed answers and flags: up to 5 attempts, and from the 3rd attempt each try costs 2 marks.
    • A hint costs 25% of that question's marks (a second hint, where there is one, takes it to 50%).
    • Timers are soft (45, 75 and 120 seconds). Running over never costs marks; finishing early adds up to 20% bonus XP. Relaxed mode turns timers off.
    • Correct answers in a row build a streak multiplier on XP: x1.1 per answer, up to x1.5.
    • XP decides your rank: Recruit, Packet Scout, Shell Walker, Analyst, Operator, Root.
    • Flags look like CWM{something}. Typing just the inside also works.
    • Keys: 1 to 4 pick an option, Enter submits, Esc closes panels.