DefCamp Capture the Flag (D-CTF) 2023

DefCamp Capture The Flag ( D-CTF) is one of oldest, most shattering and rebellious security CTF competitions in Central and Eastern Europe.

The most skilled hackers and IT geeks put their knowledge to the test and compete with the best CTF teams from all over the world to get in the top 10 and go on to win the overall D-CTF competition – or “die” trying.

There’s one important rule though: hack before getting hacked!

The qualification phase is traditional Jeopardy while the final hosted in Bucharest is Attack & Defence. 

What is a Capture the Flag (CTF) event?

Capture the Flag (CTF) is a computer security competition. CTF contests are usually designed to serve as an educational exercise to give participants experience in securing a machine, as well as conducting and reacting to the sort of attacks found in the real world.

Reverse-engineering, network sniffing, protocol analysis, system administration, programming, and cryptanalysis are all skills which have been required by prior CTF contests.

There are two main styles of capture the flag competitions: attack/defense and jeopardy. In an attack/defense style competition, each team is given a machine (or small network) to defend on an isolated network. Teams are scored on both their success in defending their assigned machine and on their success in attacking other team’s machines.

Depending on the nature of the particular CTF game, teams may either be attempting to take an opponent’s flag from their machine or teams may be attempting to plant their own flag on their opponent’s machine. One of the more prominent attack/defense CTFs is held every year at hacker conferences, such as DefCamp, where this activity is expected every year.

Goal of the Competition

/ You receive a number of challenges from different categories

/ Your goal is to exploit weaknesses in the systems provided by the organizers or follow hints available in the challenge description about what you need to discover

/ each challenge has an unique flag in the format DCTF{sha256 random message}; if found, you can submit into our platform and get rewarded

Rules of Engagement

/ Teams can have maximum 5 members (including Team Leader)

/ Denial of D-CTF’s infrastructure is forbidden

/ Finding bugs in D-CTF’s infrastructure can bring more points to the team

/ The most important rule though is hack before getting hacked!

/ Anyone can participate in the competition

/ The top 3 best teams get prizes

/ The problems are challenging, unique, and include real life scenarios inspired from the latest threats in fields such as: AI & Machine Learning, Cyber War, Cryptography, Steganography, Web Security, Network Security, Data Forensics, Reverse Engineering, Blockchain, Exploitation, Incident Response, and many more.

/ Terms & Condition of the competition are available here.

Total prizes

Main prizes – international:

1st place: 1,536 euro + 3 Binary Ninja licenses for personal use

2nd place: 1,024 euro + 2 Binary Ninja licenses for personal use

3rd place: 512 euro + 1 Binary Ninja licenses for personal use

Best Team from Romania: 512 euro

Best write-up (1 prize each for online and onsite) 512 euro, only for top 30


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Sponsors & Partners

They help us make this conference possible.


Orange Romania is the leader of the local telecom market and part of the Orange Group, one of the largest global telecommunications operators, connecting hundreds of millions of customers worldwide. With over 11 million customers and an annual turnover exceeding 1.5 billion euros, Orange Romania connects 1 in 2 Romanians and offers an extensive range of communication solutions to its customers, both individual users and companies, from basic services up to complete voice services, fixed and mobile data, TV services or smart home services, but also mobile financial services. Orange is also a leader in innovation investing yearly over 200 million euros in network infrastructure and R&D initiatives in Romania. In the past 3 years Orange has launched two 5G Labs in Bucharest and Iasi, that aim to support researchers, startups and companies to test their 5G solutions in advance. In addition, Orange is a long-term supporter of the startup ecosystem through the Orange Fab accelerator program designed to support entrepreneurs in the development of innovative products and their distribution locally and internationally. 

Orange Services was created in 2013 and is a 100% owned subsidiary of Orange Group. As a technology services company, our DNA is in IT, but our teams also work in other domains including mobile networks and a number of commercial and business functions. Orange Services is one of the largest technology hubs in the Orange Group, working internationally for both Orange corporate functions and country operations. Through a unique combination of cutting edge know-how and expertise, our teams provide a broad range of services: development and supervision of IT services in domains such as Big Data, Cloud, M2M, IoT, TV, Connected Objects; design and development of IT infrastructure and desktop solutions; testing & planning for mobile networks; implementation of supply chain solutions and also improvement of commercial & business performance including BI, CRM, Analytics, Digital learning and Customer Care. Visit us on LinkedIn.

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