Crypto 4 - Writeup

Crypto 4 - Valentine CTF 2020

The challenge gives you this strange piece of text


The equal signs might be referring to base64, or just for misleading :wink:


In such cases, most probably it is encoded in one of the popular ciphers, you have no choice other than trying each and every cipher you know!

Finally, after trying a couple of popular ciphers, it turned out to be Atbash Cipher, by just googling Atbash Cipher decoder we can get the flag.