K17 2026
K17 CTF is an online Jeopardy CTF with a mix of beginner-friendly and hard challenges, hosted by UNSW's Security Society.
NOTE: The end time listed above is inaccurate. The new end time is September 12, 10:30 UTC.
Website: https://k17ctf.secso.cc/ Scoreboard: https://scoreboard.k17ctf.secso.cc/
Sponsors: Hex-Rays, Tanto Security
Join our discord for rules and announcements related to the CTF: https://discord.gg/QeCGUhbjXx
Web 3
| Challenge | Has |
|---|---|
| DriveOne | files |
| macrohard_azuer | files |
| whatsNew | files |
Pwn 8
| Challenge | Has |
|---|---|
| big_win | files |
| huge_binary_1 | files |
| huge_binary_2 | files |
| ihyh | files |
| java_notes | files |
| make_a_wish | files |
| not_json | files |
| waf | files |
Reverse 4
| Challenge | Has |
|---|---|
| Evilgram | files |
| etch_a_sketch | files |
| monoid | files |
| srev | files |
Crypto 5
| Challenge | Has |
|---|---|
| blowfish | files |
| cry_pto | files |
| cryjail | files |
| leaky_rsa | files |
| shamir_secret_spilling | files |
Forensics 2
| Challenge | Has |
|---|---|
| close_enough | files |
| get_fixed_boi | files |
Misc 7
| Challenge | Has |
|---|---|
| P_NP | files |
| archive_trap | files |
| online_roulette | files |
| prime_calc | files |
| spot | files |
| sudo_but_good | files |
| verify_you_are_human | files |
OSINT 2
| Challenge | Has |
|---|---|
| larpfest | files |
| rainier | files |