PHDays CTF is a competition developed by Hackerdom team. It was held on May, 12. PHDays is a computer security forum organized by Positive Technologies. It will be held May, 23-24 in Moscow.

Game is over. View final scoreboard. Official repository with service sources, checkers, exploits and writeups is available on github:

Download vulnerable image: image.7z

The contest is driven by classic rules. Each team is given a set of vulnerable services. Organizers regulary fill services with private information — the flags. The goal of each team is to find vulnerabilities, fix them in their services and exploit them in order to get flags from other teams. Please refer to the rules page and Wikipedia article for slightly more info. See network page also.

Join to our telegram channel, we will publish all important information there too.

Important timestamps

PHDays CTF 2017 starts on May 12, 2017 at 16:00 UTC and will last for 9 hours. As usual, the network will be closed for the first hour. Registration is closed.

All times are in UTC. Please check with UTC clock.


The best team will get valuable prizes from Positive Technologies and tickets to PHDays VII Forum which will be held May, 23-24 in Moscow.