Morse-Code

Challenge: Morse Code

Category: Cryptography

Point Value: 100

Author: WIL HONG

Description:

Morse code is well known.
Can you decrypt this? Download the file here¹.local
Wrap your answer with picoCTF{}, put underscores in place of pauses, and use all lowercase.

Write-Up:

Given the name of the challenge and listening to the sound file we can tell its morse code. Not knowing the code, I found this Online tool to translate from wav to morsecode text: link

First we upload our wav file to the site:

Then by pressing play the site begins to decode the morse code message:

After a short period of time we have our flag data:

WH47 H47H 90D W20U9H7

Finally lets convert to picoCTF{} flag format

picoCTF{wh47_h47h_90d_w20u9h7}  

FLAG:

picoCTF{wh47_h47h_90d_w20u9h7}  

Footnotes

1. Included links to the source code may be out of date as they were what I recorded during the competition, and may be different now. ↩