About OpenCTF


Registration

Registration is first come first served with a neighborly touch: you can play from anywhere at DEF CON.

  • Arrive at Contests Friday morning.
  • Register your team with Neg9.
  • Log into the scoreboard via HTTPS.
  • Solve challenges.
  • Submit keys.

Our Services


We will be running a Jeopardy-style scoreboard.

Pwnable

Hack our service by writing a custom exploit.

Crypto

Cryptanalyze a ciphertext or a key system.

Web

Find vulnerabilities in the Internet's fondest protocol.

Reverse Engineering

Find a flag hidden in a binary.

Pricing


We trust you will find our pricing beats the CTF industry avg()!

Basic

Free
  • 0 GB Disk Space
  • 100 GB Monthly Bandwidth
  • ∞-2 Domains
  • 8 Email Accounts
  • Free Setup

Standard

$20
  • 1 KB Disk Space
  • 200 GB Monthly Bandwidth
  • ∞-1 Domains
  • 7 Email Accounts
  • Free Setup

Professional

$31337
  • 20 MB Disk Space
  • 1094795585 GB Monthly Bandwidth
  • Domains
  • 6 Email Accounts
  • Free Setup

Teaser


We promise circuits!
Circuit
We promise easy challenges!
MasterLock
We promise hard challenges!
Spaceship
We promise old school challenges!
Tractor Feed

Contact Us


We will not accept your questions or comments via the below form. Send us e-mail at openctf at neg9 dot org