RULES(2024) RULES(2024)

Name

contest-rules - 2024 Block Capture the Flag rules.

Dates

The event starts on November 13 22:00 UTC and ends on November 14 22:00 UTC.

Puzzles will be available for future download. Points will not be awarded for solving them after the event ends.

All puzzles are solvable without brute forcing the solutions.

Flag format

You know you have successfully solved a puzzle if you find a string which matches the following regular expression:
/flag\{.*\}/i.

For instance, flag{27fbe50bf1ccdaf5cfc9a1} would be a valid flag.

Puzzle order

Puzzles are mostly independent and can be solved in any order.

Reference machine

All puzzles have been verified to be solvable. Most puzzles should be solvable on a variety of operating system / browser / virtualization software combinations.

Prizes

The organizers will contact the winners to organize prize delivery using the email registered for the team account.

Only competitors who are residents of the USA are eligible for prizes this year.

If any of the top 10 teams are ineligible for prizes, the next eligible highest placed team will receive the prize.

If there is a tie, the first team to have scored their last point, based on the organizers' records, wins the tie.

Decision of the organizers will be final and binding with regard to the prizes.

Teams

One-person teams are allowed, but it's more fun with friends! There is no limit on team size. Competitors are not allowed to register multiple accounts/teams with the intent of holding multiple places on the scoreboard.

Cross-team collaboration

Competitors may not share flags or solutions to challenges with other competitors not on their team. Evidence of any sort of collaboration between teams will result in disqualification.

Terms of Service


Email and data use

An email is needed for registration. The email is only used for account recovery purpose and as a means of contact for prize coordination.

All data related to the event will be deleted shortly after the event ends. Your email will not be associated with any other Block services.

Cookie and tracking

*.blockctf.com does not use any tracking technology. Cookies may be used for the purpose of authentication and content delivery (CloudFlare CDN) purpose.

ctftime.org

Your team name and score will be made available in a public fashion and shared with ctftime.org. Points scored in this event should count towards your global CTF Time leaderboard.

Bugcrowd

This website (and anything hosted under *.blockctf.com) is not included in Square's Bugcrowd bug bounty programs. Please visit the official Bugcrowd site for additional information about Block's bug bounty programs.

CTF Scope

The challenges posted on this site may be hacked using any tools desired. However, hacking of any Block infrastructure, which is separate infrastructure from this site, falls under the terms of Block's Bugcrowd bug bounty program. In addition, Discord has their own terms of service for appropriate use. When in doubt, contact a CTF organizer to determine whether a site or server is within the CTF scope.

The CTF is running on infrastructure hosted by other companies. Please be kind and limit traffic to a reasonable level. All puzzles are solvable without brute forcing the solutions.

Code of Conduct

By participating in this Contest you agree to abide by the Block CTF Code of Conduct. Unacceptable behavior by participants will not be tolerated. Anyone asked to stop unacceptable behavior is expected to comply immediately. If a participant engages in unacceptable behavior, the Block CTF organizers may take any action they deem appropriate at their sole discretion, up to and including expulsion from the Competition and expulsion from the Block CTF Discord.

See also

Work_at_Block(1), Privacy_policy(1), Code_of_conduct(1)

Block, Inc. (c) RULES(2024)