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Train, Compete, and Prove Your Cybersecurity Skills

Hands-on Capture The Flag platform featuring real-world challenges across Web, Crypto, Forensics, Pwn, OSINT, and Reverse Engineering.

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Beginner to advanced levels
Real-time leaderboard

Web – SQL Injection 101

Easy

Web – SQL Injection 101

Solved

Crypto – Caesar Cipher

Solved

Reverse – Binary Analysis

Unsolved

Pwn – Buffer Overflow

Unsolved
$ nc challenge.nebo.ctf 1337
Welcome challenger...
Enter flag:
> CTF{********}
Flag correct!
$
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What You'll Master

Master real-world cybersecurity skills through hands-on challenges.

Real-World Challenges

Inspired by real attack scenarios from industry experts and security researchers.

Instant Flag Validation

Secure SHA-256 flag verification ensures accurate and immediate feedback on your solutions.

Live Leaderboard

Compete globally in real time and track your progress against cybersecurity enthusiasts worldwide.

Beginner Friendly

Guided challenges and hints help you learn step-by-step, regardless of your experience level.

Admin-Curated Content

Quality-controlled challenge releases ensure every challenge meets our high standards.

Secure Platform

Hashed flags and rate-limited submissions protect the integrity of every challenge.

Team Participation

Compete Together. Win as a Team.

Form teams, solve challenges together, and climb the leaderboard faster through collaboration. Share knowledge, divide tasks, and tackle complex cybersecurity challenges as a unified force.

  • Team Creation & Invites
  • Shared Challenge Progress
  • Team Leaderboard Ranking
  • Role-Based Access Control
Create a Team Join Existing Team
Team collaboration in cybersecurity competition
Testimonials

Trusted by Security Professionals

Hear from cybersecurity students, bootcamp learners, SOC analysts, and university clubs who've leveled up their skills with neboctf.

Blog

Latest Insights & Updates

Stay informed with cybersecurity tips, challenge writeups, platform updates, and industry insights.

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Partners

Trusted by Security Leaders

Our platform is backed by cybersecurity experts and organizations committed to advancing security education.

FAQ

Frequently Asked Questions

Everything you need to know about neboctf platform, challenges, and how to get started.

neboctf is a hands-on Capture The Flag platform designed for cybersecurity training and skill development. Users can solve real-world challenges across categories like Web Security, Cryptography, Forensics, Reverse Engineering, and more. Each challenge requires finding a hidden "flag" (a secret string) that you submit to earn points and climb the leaderboard.
No prior experience is required! neboctf offers challenges for all skill levels, from beginner to advanced. Each challenge is tagged with a difficulty level (Easy, Medium, Hard), and beginners can start with easy challenges that include hints and learning resources to guide you through the process.
Flags are validated using secure SHA-256 hashing. The platform checks flags in the canonical format NEBOCTF{...}. If you see variants like CTF{...} or NEBOCTF(...), the platform normalizes them before checking.
You always solve challenges as an individual on neboctf. If you are in a team, your correct solves also contribute to your team score, but a teammate solving first will not block you from submitting your own flag. Team score is an aggregation layer, while your own progress remains personal.
To ensure fair play and prevent abuse, flag submissions are rate-limited. You can submit flags multiple times, but there's a cooldown period between submissions. Once you successfully submit the correct flag for a challenge, you cannot submit flags for that same challenge again - your solve is recorded and points are awarded.
New challenges are released weekly by our admin team. We maintain a diverse library of challenges across all categories, ensuring there's always fresh content for users at every skill level. You can follow our updates and announcements for information about new challenge releases.
You can reset your password using the "Forgot Password" link on the login page. You'll receive an email with instructions to create a new password. Make sure to verify your email address when you first register, as this is required for account recovery and important platform notifications.
Currently, neboctf is focused on skill development and learning. While there are no monetary prizes, you'll gain valuable hands-on cybersecurity experience and can showcase your achievements through your profile and leaderboard position. Certificates and achievement badges are planned features for future releases.

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