In this challenge, it gives a file name corrupted.pss. When open the file it displays a weird code. But if you see carefully, there is a PNG header in the file. So it may originally PNG images. Lets change the file extension pss to PNG.
corupted.png
Change the file extension.
flagg
Get the flag
Signal
In this challenge, they're give a sound file to decode it. It was a Morse code. Let's try to decode it.