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Cyber Battle CTF 2023


Cyber Battle: Capture The Flag (CTF) is an annual competition for aspiring cyber security enthusiasts in Brunei Darussalam to exercise ethical hacking skills and gain experience with real-life IT scenarios.

Joining a CTF competition is one of the most interesting and fun ways to get into the cybersecurity field, and for IT professionals to test their skills and get better at what they do.

Game play

Cyber Battle is a Jeopardy-style CTF competition. Teams will attempt to solve challenges (computer security puzzles) to find “flags” (a hidden string of text) and submit them on the CTF scoring server to earn points. 

Challenges are divided into categories, each with a different level of difficulty. Points for each challenge will depend on the level of difficulty. The more challenges solved, the more flags obtained, and the more points will be awarded. The team with the most points will win the competition. 

Challenge categories: 




First Place




Second Place




Third Place





Category Bonus

The first team to complete all the challenges in a category will win a bonus for that category. There are 6 category bonuses to be won! 




Date: Sunday, 17 September 2023

Time: 9.00 am - 1.00 pm

Venue: Online



Date: Saturday, 30 September 2023

Time: 8.00 am - 4.00 pm

Venue: JIS Arts Centre

Why join Cyber Battle?

  • CTF events are fun! 
  • Challenge yourself with some tricky hacking problems. 
  • Build critical thinking skills. 
  • Get first-hand experience with how security breaches can happen. 
  • Meet like-minded people. 
  • Participation is free! 

Register your team

Gather a team of 2 or 3 members and sign up today. 
Registration is open until 15 September 2023 at 10:00am

Click here to register.

Note: A Google account is required to submit the form.

Terms & Conditions


This competition is open to citizens, permanent residents and foreigners residing in Brunei Darussalam, holding a valid Brunei Darussalam identity card (yellow, red or green). Participants must join the competition as a team of either 2 or 3 members. 


A qualifying round will be held ONLINE on Sunday, 17 September 2023. All participants will need access to computers and are responsible for their own internet connection during the specified time. At the end of the Qualifying Round, 10 teams with the most points will qualify for the Final round. 

This event will utilize 2 platforms:

  • Cyber Battle CTF Network (Host challenges, flag submission and display scoreboard)
  • Discord (for handling online inquiries)



The final round of Cyber Battle: Capture The Flag 2023 will be held on Saturday, 30 September 2023. Teams that have qualified must be present at the competition venue to participate in the final round. Each participant is required to bring their identification card (IC) for verification purpose. 

Participants are required to bring their own computers/laptops, network adapters & software for their own use during the competition.  Only wired connections are allowed to the Capture The Flag (CTF) network. A maximum of 3 laptops for each team can be connected to the CTF network. You may bring additional laptops but they will not be allowed to connect to the CTF network. 


Participants are prohibited from the following actions during the competition.

  1. Attacking any servers, computers or network devices other than the target system.
  2. Denial of Service / Distributed Denial of Service attacks.
  3. Sharing information about the challenges to anyone other than your registered team members.
  4. Getting help or support from anyone besides your registered team members.
  5. Deleting flags from game servers.
  6. Performing destructive attacks against the game servers i.e. rm –rf /
  7. Performing any illegal actions against internet resources.
  8. Smoking, vaping & e-cigarettes are not allowed at the competition venue.

Any participant found to break the rules of the competition will be disqualified at the discretion of the organizers.


Reach us by email at


ITPSS Sdn Bhd reserves the right to cancel or amend the competition and these terms and conditions without notice. Any changes to the competition will be notified to participants as soon as possible by the organizers. Any decisions made by the organizers are final.

Frequently Asked Questions


  • Cyber Battle is a ‘Jeopardy’ style cybersecurity capture the flag (CTF) competition.
  • In Jeopardy style CTF, players will be presented with questions (challenges) divided into categories e.g. Web, Exploitation, Digital Forensics, Packet Analysis and Cryptography. For each challenge a team completes, a specific number of points is set based on its difficulty level.
  • Players are required to solve the challenges to obtain a secret key known as a “flag”.
  • Flags in Cyber Battle will tend to be phrases or sentences enclosed with CBCTF{}.
  • Flag example: CBCTF{th15_i5_cyb3r_b4ttl3}.
  • Finding this flag is proof that the team solved the challenge.
  • The flag will then be submitted to the dedicated score server and once the flag is verified as correct, the team will be awarded with points.
  • At the end of the game, the team with the highest points will win the competition.

Brunei citizens, permanent residents or foreigners residing in Brunei Darussalam, holding a valid Brunei Darussalam identity card (yellow, red or green). Brunei police or army IC holders may also join. 

No, but participants under the age of 18 will need written consent from a parent or guardian.

No, you cannot join as a solo participant.

Click here to register. Each participant will be required to submit a scanned copy of their IC for verification. Registration is open until 15 September 2023 at 10:00am.

There are no registration fees.


Qualifying round will be held online and a link to access the URL will be emailed to registered teams after registration has closed. 

Qualifying round will be on Sunday, 17 September 2023 from 9:00am to 1:00pm.  

Only the top 10 teams in the Qualifying Round will move on to the Final. 


The final will be held on Saturday, 30 September 2023 from 8:00am to 4:00pm. More details will be sent to the finalists by email. 

Cyber Battle CTF operates on a wired network and a bring-your-own-device (BYOD) basis, meaning you are required to bring your own laptop equipped with an Ethernet port during the Final. A maximum of 3 laptops per team are permitted to connect to the CTF network. You can use any operating system (for Linux/Unix, 32-bit is preferred), tools or software that may aid in completing the challenges. 

Refreshments & lunch will be provided for participants, but feel free to bring your own snacks and drinks if you’d like. 

A surau is located near the competition venue. 

No, but you can produce and share your own solutions online.

Bring your Identity Card, laptop (don’t forget the power adapter) and prepare to have fun!