🚩 Pico CTF - Mod 26

We are being presented with the following description “Cryptography can be easy, do you know what ROT13 is?” and the following text.

cvpbPGS{arkg_gvzr_V’yy_gel_2_ebhaqf_bs_ebg13_Ncualgvd}

This is a cipher text, meaning that the letters of the alphabet need to be ‘moved’ 13 places forward, in order to decrypt the message.

Now, open up the terminal, making sure that you have python3 installed.

If you don’t in the terminal type the following command.

sudo apt-get install python3

Then, in the terminal write the following.

python3
import codecs
codecs.encode("cvpbPGS{arkg_gvzr_V'yy_gel_2_ebhaqf_bs_ebg13_Ncualgvd}", 'rot_13')

Well done! You’ve got the flag.