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Mellivora

Mellivora is a CTF engine written in PHP. Want a quick overview? Check out a screenshot gallery on imgur.

Mellivora logo

Requirements

  • LAMP: PHP 5.5.9+, MySQL 5.5+, Apache 2.4+. Will likely work with other configurations but this is untested.
  • Composer dependency manager for PHP.

Features

  • Arbitrary categories and challenges.
  • Scoreboard with optional multiple team types.
  • Manual or automatic free-text submission marking.
  • Challenge hints.
  • Team progress page.
  • Challenge overview page.
  • Limit category and challenge exposure to certain times.
  • Challenge reveal on parent challenge solve (by any team).
  • Optional signup restrictions based on email regex.
  • Local or Amazon S3 challenge file upload.
  • Optional automatic MD5 append to files.
  • Admin management console with competition overview.
  • Create/edit front page news.
  • Arbitrary menu items and internal pages.
  • Optional total number and time-based submission throttling.
  • User management with IP correlation.
  • Internal log for catching exceptions.
  • reCAPTCHA support.
  • User-defined or auto-generated passwords on signup.
  • User/Email/IP search.
  • Configurable caching.
  • Caching proxy (like Cloudflare) aware (optional x-forwarded-for trust).
  • Optional separate domain for static files.
  • Segment analytics support.
  • SMTP email support. Bulk or single email composition.
  • TOTP two factor auth support.
  • CTF Time compatible JSON scoreboard.
  • Self-serve and admin password reset.
  • and more ...

Scaling

Mellivora scales well on Amazon Elastic Beanstalk and has support for S3 file storage.

Performance

Mellivora is lightweight. And fast. Very fast. Want to run a large competition on an EC2 micro instance? No problem!? See benchmarks.md for some possibly unhelpful benchmarks.

Installation

You can find detailed setup instructions in install/README.md.

Development

Build Status

PRs gladly accepted. Test using Codeception.

License

This software is licenced under the GNU General Public License v3 (GPL-3). The "include/thirdparty/" directory contains third party code. Please read their LICENSE files for information on the software availability and distribution.

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Mellivora is a CTF engine written in PHP

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  • PHP 94.8%
  • CSS 2.3%
  • Shell 1.9%
  • JavaScript 1.0%