Null 2025

official repo

Null CTF is an online 48-hour Jeopardy-style Capture The Flag competition at its first edition organized by team > r0/dev/null. It features challenges across all major categories, including Web, Pwn, Crypto, Reverse Engineering, Misc, Forensics and not only. The event is aimed at participants of all skill levels and aims to offer a fun, learning, and competitive experience.

Sponsors: CyberEdu, Bitdefender, Hivehack

Infra sponsored by goo.gle/ctfsponsorship

Web 8

Challenge	Has
Archivist_s_Whisper	files
Archivist_s_Whisper_Revenge	files
Codename_Neigh	files
Codename_Neigh_2	files
Next_Jason	files
The_Missing_Letters	files
ftp_db	files
seo_blog	files

Pwn 3

Challenge	Has
distrustful	files
reloc8	files
sketchy	files

Reverse 7

Challenge	Has
Big_Lez	files
Clutter	files
Netfilter_Nightmare	files
confusion	files
rustricks	files
specifier	files
wordleOS	files

Crypto 6

Challenge	Has
Classically	files
Witching_Hour	files
double_it_and_give_it_to_the_next_person	files
gizsea	files
infernoPAD	files
rusty_dusty	files

Forensics 1

Challenge	Has
iuesbitaipsi	files

Misc 5

Challenge	Has
Hypertext_TCP_Control_Pots_Cyber_Protocol	files
RATatoille	files
Reservation	files
Slim_Shady	files
abcdef	files

OSINT 1

Challenge	Has
geo_osint	files

Blockchain 3

Challenge	Has
Buy_My_Coin	files
We_Go_Gambling	files
We_Go_Gambling_Revenge	files