TFC CTF 2023 - MAYDAY!

Description

• Category: Cryptography
• Difficulty: WARMUP
• Points: 500 → 50

We are sinking! The nearest ship got our SOS call, but they replied in pure gobbledygook! Are ye savvy enough to decode the message, or will we be sleepin’ with the fish tonight? All hands on deck!

Whiskey Hotel Four Tango Dash Alpha Romeo Three Dash Yankee Oscar Uniform Dash Sierra One November Kilo India November Golf Dash Four Bravo Zero Uniform Seven

Flag format: TFCCTF{RESUL7-H3R3}

Resolution

We copy paste the ciphertext into Google and we find that those words are used in the NATO phonetic alphabet.

We decrypt the ciphertext with the online tool dcode.fr:

With the flag format we get: TFCCTF{WH4T-AR3-YOU-S1NKING-4B0U7}.