N545

SSTV Decode

Downloading Challenge Files

here is the executable file to download

1MB

N454.rar

in this challenge we are given an aufio file and from the challenge name which is NASA and the audio file which is moon this audio file could be an SSTV Encoding so let's decode it using a tool i have found on github

Slow-scan television (SSTV) is a method for picture transmission used by amateur radio operators to transmit and receive images. SSTV uses analog frequency modulation, in which every different value of brightness in the image gets a different audio frequency

GitHub - colaclanth/sstv: SSTV DecoderGitHub

to install you have to clone the github repository into your machine using this command

sudo git clone https://github.com/colaclanth/sstv.git

and then install it using this command

cd sstv
python setup.py install

and now let's decode the audio file

and when it's done open the result.png image

and this is the password of the zip file

Flag

DEFENSYS{FR0M_TH3_M00N}

Greetings from Sayonara