Recent Posts

• October 09, 2022

  POSTAL (Misc Challenge Writeup) -- CTF GDG Algiers 2022

  The GDG Algiers one of the largest community of developers and tech enthusiasts in Algeria and MENA region, has organized the first edition of the GDG Algiers CTF. Competition started October 7 and finished 48 hours later. It was a very fun and hard CTF, with some medium challenges. Very good infra and support. We chose the "misc" category challenge called "POSTAL" because its solution involves a number of specific techniques related to osint, forensics and cryptography.

• July 27, 2022

  SECRET CONVE.RSA.TIONS (Crypto Writeup) -- Hacky Holidays - Unlock The City! 2022

  The third edition of the famous Deloitte Hacky Holidays CTF competition start July 8 and finish July 26, 2022. This Year it's "Unlock the city!", It was 18 days of challenges, divided in 4 districts, 33 challenges in total, where 1242 active players tried to unlock the city. Very well organized, with an excellent platform and well-thought-out challenges. We chose this CRYPTO challenge for the writeup because it's a very good practical example that no matter how many resources you have, a BAD implementation of an algorithm will always be a persistent threat to you.

• June 06, 2022

  Jason's Web Tarot 2 (Web Challenge Writeup) -- BCACTF 3.0 2022

  BCACTF 2022 took place on June 3 to 6, 2022. It was 72 hours of challenges and exceptional support from the organizers. We chose this WEB challenge for the writeup because it's a very good practical example of why it is necessary to use a good shared-key in all applications.

• June 06, 2022

  Jason's Tarot 3 (Web Challenge Writeup) -- BCACTF 3.0 2022

  BCACTF 2022 took place on June 3 to 6, 2022. It was 72 hours of challenges and exceptional support from the organizers. This WEB challenge is perfect to demonstrate why it is important to keep all the software we use up to date. The security of the software supply chain is of great importance following multiple far-reaching cyber attacks in recent years.

• May 07, 2022

  I made a Blog! (Web Challenge Writeup) -- EZ-CTF 2022

  EZ-CTF 2022 (The first CTF competition using a new and innovative platform called CTF Cafe) took place on May 4 and 5, 2022. It was 48 hours of all kinds of well-crafted challenges and exceptional support from the organizers. We chose this WEB challenge for the writeup as we can show one of the most common exploitation techniques widely used all over the world.