Forensics, picoCTF

picoCTF: m00nwalk writeup


Decode this message from the moon.

  • Category: Forensics
  • Points: 250


  • How did pictures from the moon landing get sent back to Earth?
  • What is the CMU mascot?, that might help select a RX option


  • You need to download an audio file which has weird sounds. That I don’t understand. The hints helped me here, to get to a starting point for my research.

Figure 1.0
  • SSTV signals are used by Apollo 7, 8, 9 and 11 space missions to send images from the space to earth. This is interesting. Cause I always taught to space communication works.

  • What is SSTV?

Slow-scan television (SSTV): Slow-scan television (SSTV) is a picture transmission method, used mainly by amateur radio operators, to transmit and receive static pictures via radio in monochrome or color.

Figure 1.1
Figure 1.2: The image was upside down so I had to rotate it.
  • Flag: picoCTF{beep_boop_im_in_space}

I hope you have learned something valuable. If you like this post please share it with your fellow hacker mates and if you have any questions & or suggestions please feel free to post them down in the comments. Iā€™d love to hear and learn from you.

Have a great day guys šŸ‘‹. See you in the next post.

Notify of
Inline Feedbacks
View all comments
Share via
Copy link
Powered by Social Snap