interencdec¶
Description¶
Can you get the real meaning from this file. Download the file here.
Solution¶
if we open the file, we get the following string:
YidkM0JxZGtwQlRYdHFhR3g2YUhsZmF6TnFlVGwzWVROclgyMHdNakV5TnpVNGZRPT0nCg==
this looks like a base64 string, so let's try and decode it. the result would be this:
b'd3BqdkpBTXtqaGx6aHlfazNqeTl3YTNrX20wMjEyNzU4fQ=='
However, the result still looks like a base64 encoded string. it seems like the data might have been encoded multiple times. so we decode it again. Note that I removed b'' from the string and decoded the rest:
wpjvJAM{jhlzhy_k3jy9wa3k_m0212758}
now this format looks like our flag, so we're close! let's try decoding it using caesar cipher. I used this site which generates all the possible outputs.
flag: picoCTF{caesar_d3cr9pt3d_f0212758}