PicoCTF-2022 Writeup
  • README
  • Binary Exploitation
    • buffer overflow 1
    • buffer overflow 2
    • buffer overflow 3
    • flag leak
    • function overwrite
    • ropfu
    • stack cache
    • x-sixty-what
  • Cryptography
    • basic-mod1
    • basic-mod2
    • diffie-hellman
    • morse-code
    • NSA Backdoor
    • Sequences
    • substitution
    • Sum-O-Primes
    • Very Smooth
  • Forensics
    • Operation Oni
    • Operation Orchid
    • SideChannel
    • St3g0
    • Torrent Analyze
  • Reverse Engineering
    • Bbbbloat
    • Keygenme
    • unpackme
    • Wizardlike
  • Web Exploitation
    • Forbidden Paths
    • noted
    • Roboto Sans
    • SQLiLite
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  1. Cryptography

morse-code

Previousdiffie-hellmanNextNSA Backdoor

Last updated 3 years ago

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Challenge

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

Solution

Use a website like . Upload the file. The output was WH47 H47H 90D W20U9H7. We replace the spaces with underscores to get the flag.

Flag

picoCTF{WH47_H47H_90D_W20U9H7}

here
this morse code decoder