HTB Cyber Apocalypse 2021 - Nintendo Base64 | Crypto
Nintendo Base64
Aliens are trying to cause great misery for the human race by using our own cryptographic technology to encrypt all our games.
Fortunately, the aliens haven’t played CryptoHack so they’re making several noob mistakes. Therefore they’ve given us a chance to recover our games and find their flags.
They’ve tried to scramble data on an N64 but don’t seem to understand that encoding and ASCII art are not valid types of encryption!
This challenge will raise 33 euros for a good cause.
Downloadable: output.txt
Solution
This is what we get from the output.txt file and seems like it’s a hint that I should base64 decode the given string eight times.
I used Cyberchef to quickly get the flag.