Hackpack 2020 Soundy ctf-writeup

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int0x80 Tech Hobbyist,Sudoku Addict Always Infosec Game mode

This challenge was among the most cheeky challenges of all
running in the misc category

Took me several days to finally join the pieces together as we are given a Wave media file by name Scottie.wav
listening to it gave beep sounds at intervals like a transmission
whiche led to me deciphering the transmission as Slow Scan tv (SSTV)
read more here

Now i had to decode that and two tools came to my mind
Qsstv for linux and rx sstv for Windows

and here is the solution using Qsstv
install it via
sudo apt update && apt install qsstv

opening the wave audio file gave as the flag

and there we got our flag
that gave us 100 points

the mode of transmission however was not Scottie as the name but actually robot36

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2 months ago

wow!! Koimet

2 months ago

hey, bro,can you give me the Scottie.wav file?

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