$ ctf42

TJCTF 2025

official repo

TJCTF is an international cybersecurity competition hosted by TJ Computer Security Club (TJCSC), a group of students from Thomas Jefferson High School for Science and Technology in Northern Virginia.

Prizes are sponsored by Trail of Bits and Zellic.

Twitter: https://twitter.com/tjctf Email: contact@tjctf.org Discord: https://discord.gg/w5xapGP

Competition is online.

Web 2

Challenge Has
double_nested files
markdown_renderer files

Pwn 6

Challenge Has
buggy files
city_planning files
extra_credit files
i_love_birds files
linked files
wrong_warp files

Reverse 6

Challenge Has
artifact files
config files
guess_again files
neural_inversion files
rubix_cube files
serpent files

Crypto 8

Challenge Has
alchemist_recipe files
bacon_bits files
close_secrets files
dotdotdotv2 files
double_trouble files
pseudo_secure files
seeds files
theartofwar files

Forensics 8

Challenge Has
album_cover files
deep_layers files
footprint files
hidden_message files
packet_palette files
quant files
thats_pietty_cool files
vr_keylog files

Misc 7

Challenge Has
airport files
golf_hardester files
guess_my_number files
linkedout_recon files
make_groups files
masked files
mouse_trail files