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## What is that? Have you ever heard of a side-channel attack? Maybe not, but you might have heard of the "Pentagon Pizza Index." The idea is somewhat similar. A side-channel attack allows you to gather information indirectly by observing correlated signals rather than the target data itself,...

## Router research Apart from participating in CTFs, in the meantime I wanted to practise my other hands-on skills and try to work on some real devices. In order to do that I visited a local electronics store and bought the cheapest device I could find. In this case it was router **MW302R** shown...

## Third task - Postern Now it's time for the 3rd task, and this one was much more challenging than the previous one. From the previous task, we learned that the data for this challenge is located at memory address 0x30000, and just like in both previous tasks we also get an error message...

## The Second Task Continuing the series, let's check what's inside the second task.  So now we can search for "**Invalid Header**". And there is exactly one hit! This message is shown when the condition involving the *parapet* function fails. ...

## What is even this task about? Ok, so last time we ended up with some bunch of weird looking bytes; > 00 00 00 00 0e 05 13 07 36 0f 37 69 22 27 3f 65 2e 20 36 69 2f 3b 3f 24 26 61 2c 21 24 3a 7b 65 7d 39 6a 79 7d 79 6a 38 4d  Attempt to **SOLVE**...

## What's that? Because I need to practice my skills in IoT and physical security of electronic devices, I decided to buy the Sword of Secrets hardware crypto CTF kit, which recently arrived. If you don't know what that is, don't worry you haven't missed anything important. In this post I'll...