This is the first quest where you are told to write code in JavaScript. It is a very easy challenge to clear and tests the basics of conditional statements. The problem is that after breaking away from the Prague Apartment (Quest 2), you are being followed by adversaries. Luckily you get your hands on a […]

Quest 2 is even easier than Quest 1 (if you have studied logic gates). Basically, the idea is to go through the circuit given and arrive at the code which will provide for a 1 on the final output. The combination of gates that are TRUE needs to be mentioned in CTF{<answer>}. The rest of […]

I have been doing reverse engineering (RE) since my childhood days and that always helps freshen up my technical skills as well as understand the intrinsic working details of a particular piece of code and/or software. I have used tools such as IDA, x64dbg/Ollydbg, hiew, and more recently Ghidra. In the past I had also […]

Home Alarm (Hemlarm in Swedish) systems market in Sweden is pretty monopolistic with 2 big companies (Verisure and Sector Alarm) dominating the home alarm market. Alarm systems needs to be connected to the central alarm system which is the one monitoring and calling in emergency services (Police & fire departments) in case of break-ins or […]