hnf flag black

Hack N Flag 2025 has ended! Thank you for participating!

Cybersecurity, gamified.

Gain hands on experience in key areas like web, forensics and pwn.

Plus a new HTB style boot2root infra hacking category.

0

DAYS

0

HOURS

0

MINUTES

0

SECONDS
hnf logo

SCROLL FOR MORE DETAILS

border

DETAILS

Start Date/Time

28 October 2025 9.00am

Scoreboard Freeze Date/Time

29 October 2025 4.00pm

End Date/Time

29 October 2025 5.00pm

Medium

Online (28 Oct), Physical (29 Oct)

Location

NP LT58C (29 Oct)

Challenge Types

Web, Infra, Pwn, Forensics, Misc, Crypto, Rev, OSINT

Categories

NP Students, Open

border

HOW TO PLAY

01

hnf-step1

Solve Challenges

Do as many as you can once the CTF starts

02

hnf-step2

Get Flags

The challenge will automatically give you a flag enclosed with HNF25{} if you solved it

03

hnf-step3

Submit Flags and Rate

Each solve is worth 1000 points, subject to a logarithmic decay to a minimum of 250 based on the number of other successful solves

04

hnf-step4

Compete For the Top

The team with the highest score by the end of the CTF wins

border

FIND US ONLINE!

footer logo

© 2026, NullSec

All Rights Reserved