<span>The
task at https://ctf.ekoparty.org/tasks/for/100 allows you to download a textfile. Upon analyzing its content, we noticed this format -> </span>r, -, +, d , u followed by 2
characters.

<span>Googling
some lines in the downloaded text file guided us to a mechanical keyboard forum
(https://deskthority.net/workshop-f7/xt-at-ps2-terminal-to-usb-converter-with-nkro-t2510-630.html<span>).
</span></span><span><span>
Reading
parts of the forum thread convinced us that the attached file maybe a hid_listen(utility) output. The next
challenge is to convert its content into a more sensible one - which lead us to
another guide (</span>https://www.reddit.com/r/MechanicalKeyboards/comments/2o25pm/simplified_instructions_for_programming_teensy/<span>). The image below describes the conversion process:


</span></span><span>
With
these clues on hand, we're able to extract the flag from the text file. The flag is EKO{holapianola}:
</span><span>
 
</span>