A collection of CTF source files and write-ups that anyone can contribute to. Did you just publish a CTF write-up? Let us know, and we'll add a link to your post — or just add the link yourself and submit a pull request. Spot an issue with a solution? Correct it, and send a pull request. Please read CONTRIBUTING.md. Archive Write-ups for CTFs that occurred in 2013 (this repository) Write-ups for CTFs that occurred in 2014 Write-ups for CTFs that occurred in 2015 Write-ups for CTFs that occurred in 2016
FEATURES
ALTERNATIVES
Learn how to integrate security into Agile development teams for high performance
SerpApi is a Google Search API that allows you to scrape Google and other search engines with ease.
Utilize the kernel's CSPRNG for generating crypto keys instead of userspace CSPRNGs to avoid randomness failures.
A tool for scraping CTF writeups from ctftime.org and organizing them for easy access.
Security tips for setting up an Apache HTTP Server to prevent security issues.
PINNED

InfoSecHired
An AI-powered career platform that automates the creation of cybersecurity job application materials and provides company-specific insights for job seekers.

Mandos Brief Newsletter
A weekly newsletter providing cybersecurity leadership insights, industry updates, and strategic guidance for security professionals advancing to management positions.

Kriptos
An AI-driven data classification and governance platform that automatically discovers, analyzes, and labels sensitive information while providing risk management and compliance capabilities.

System Two Security
An AI-powered platform that automates threat hunting and analysis by processing cyber threat intelligence and generating customized hunt packages for SOC teams.

Aikido Security
Aikido is an all-in-one security platform that combines multiple security scanning and management functions for cloud-native applications and infrastructure.

Permiso
Permiso is an Identity Threat Detection and Response platform that provides comprehensive visibility and protection for identities across multiple cloud environments.

Wiz
Wiz Cloud Security Platform is a cloud-native security platform that enables security, dev, and devops to work together in a self-service model, detecting and preventing cloud security threats in real-time.

Adversa AI
Adversa AI is a cybersecurity company that provides solutions for securing and hardening machine learning, artificial intelligence, and large language models against adversarial attacks, privacy issues, and safety incidents across various industries.