Milkshake18.rar -

: In Sonic Visualiser, navigate to Pane -> Add Spectrogram -> Channel 1 . The flag is often literally written in the frequencies of the spectrogram.

In some versions (like ), the "Milkshake" challenge is a "CyberChef special combo" involving nested encodings: Layer 1 : Hexadecimal decoding. Layer 2 : Base64 decoding. Layer 3 : Hexadecimal (again). Layer 4 : ROT47. Milkshake18.rar

: Decoding these in sequence reveals the flag, such as OFPPT-CTF{B@$3_64_3ncrypt1on_1s_l3g1t} . 4. Common Flag Formats HackTheBox : HTB{...} OFPPT-CTF : OFPPT-CTF{...} : In Sonic Visualiser, navigate to Pane ->