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Cherry Creek's CTF Competition

CCHS's first-ever cybersecurity Capture The Flag competition

CreekCTF Poster

About CreekCTF

CreekCTF is Cherry Creek High School's first-ever cybersecurity competition, where students compete to solve challenges and "capture flags" — secret strings hidden within each challenge. This competition is designed for all skill levels and can be enjoyed by anyone interested in cybersecurity, puzzles, or problem-solving.

Competition Format

CreekCTF is a capture the flag competition where participants solve challenges in various categories including cryptography, web exploitation, reverse engineering, and more. Participants can only compete in teams of 2-4 people.

Who Can Participate

CreekCTF is open to all high school students. No prior experience in cybersecurity is required, but a basic understanding of computer science concepts is helpful. If you're bringing your own laptop, please ensure it can run virtual machines using software like VMware, VirtualBox, or similar.

Code of Conduct

All participants are expected to adhere to our Code of Conduct throughout the competition. Please review our Code of Conduct document before participating.

Competition Format

  • Compete in groups of 2-4 students
  • Challenges range from beginner to advanced difficulty
  • Multiple challenge categories to explore different skills
  • Scoreboard to track progress and standings in real-time
  • Points awarded based on challenge difficulty

Who Can Participate

  • All Skill Levels: From beginners to advanced
  • Any High School Student: No prior experience required
  • Computer Requirements: Cherry Creek School District students can use library computers with VMware; others please bring your own laptop
  • All Grades: Open to freshmen through seniors
  • Perfect for: Computer Science students, Cybersecurity Club members, or anyone curious about cybersecurity

Challenge Categories

CreekCTF covers a variety of cybersecurity concepts through different challenge categories:

Cryptography

Decode secret messages, crack ciphers, and unlock encrypted data

Steganography

Find hidden messages and data concealed within images, audio, or other files

Forensics

Investigate digital evidence like network captures and system logs to uncover hidden information

General Skills

Basic computer skills, command line usage, and logical problem solving

Benefits of Participation

  • Learn practical cybersecurity skills in a fun, gamified environment
  • Develop problem-solving and critical thinking abilities
  • Prepare for national competitions like CyberPatriot and picoCTF
  • Gain hands-on experience with real-world security concepts
  • Add valuable experience to college applications and résumés

Competition Details

Date & Time

Friday - April 25, 2025

Doors open at 4:00 PM, likely to end at 8:30 PM

Location

Tech Center - Cherry Creek High School

IC Library

Duration

3 Hours

Plenty of time to work through challenges at your own pace

Registration

Open to all high school students

Form must be completed by April 22nd, 2025

Competition Schedule

  • 4:00 PMDoors Open
  • 4:30 PMWelcome, Event Kick off
  • 5:00 PMCompetition Begins
  • 6:00 PMDinner Arrives
  • 8:00 PMCompetition Ends
  • 8:15 PMAwards

Want to stay fueled during CreekCTF?

We're offering an optional dinner during the competition at Cherry Creek High School on April 25, 2025.

  • Payment options:
    • $10 if pre-paid on Revtrak (by April 21st)
    • $15 cash at the door on competition day
  • Dinner includes a main meal and drink
  • Tickets must be reserved by April 20th

Please complete one form per participant who wants a dinner ticket.

How to Prepare

No prior experience is required to participate in CreekCTF, but if you want to get a head start, here are some resources to help you prepare:

Beginner Resources

What to Bring

  • Laptop with a browser, as well as software to run a virtual machine like VMware (if not CCSD student)
  • Charger
  • Notebook and pen for writing notes to help you solve the challenge
  • Snacks and water
  • Yourself :)

Join CreekCTF

Registration is now open! Form your team of 2-4 students and register by April 22nd, 2025.