During the October 2023, I participated in the Huntress Capture the Flag contest. It started with couple of warmups challenges on the first day. Then they published two or one challenge every day. There were various categories, such as Warmups, Malware, Forensics, OSINT, Miscellaneous and Steganography. The difficulty levels differs from easy (usually very easy), medium (usually easy, but educative for new players) and hard (usually medium). Couple of “lolz” challenges have an extreme difficulty, and they were some kind of…what?

Some people asked me what tools can be useful for Incident Response and for the CSIRT/CERT teams, so I decided to prepare list of such tools and seize the opportunity of the Open Source Weekend in Košice, Slovakia on 19th October. The motivation behind this list is help to enthusiasts and new teams to prepare and/or strengthen technical equipment needed for incident response with minimal costs. On the other hand, the participation of clever and engaged people is always required for similar tasks in cybersecurity, and use of Open Source and Free(ware) tools can have some caveats with need of more tinkering or adjustments.

Few weeks ago I prepared the technical background of the CTF (Capture the Flag) for QuBit Conference Sofia 2019. It was intedned as a contest in which the three most successful participants will get the opportunity to attend QuBit Conference Sofia 2019. The content itself consisted of 10 challenges divided in 5 categories. In this post will be sumarized the thoughts, ideas and hints about the intended ways how to solve particular challenges.