PicoCTF Writeup – 13
# Information:
CTF Name: PicoCTF
CTF Challenge: 13
Challenge Category: Cryptography
Challenge Points: 100
PicoCTF 2019.
# Challenge Description:
Cryptography can be easy, do you know what ROT13 is? cvpbPGS{abg_gbb_onq_bs_n_ceboyrz}
Hint: This can be solved online if you don’t want to do it by hand!
# Writeup
Well I know that ROT13 consists in a letter substitution cipher. In this cipher a letter is replaced with the 13th letter after it in the alphabet. (Reference: Wikipédia)
Knowing this I decided to search online for a tool that would decipher the message. I came across this tool.
I inserted the given value and this was the output:
The flag is:
Show flag
picoCTF{not_too_bad_of_a_problem}
Thank you very much for reading!
Cheers,
MRegra
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