write up ctf by ariafatah

ariaf.my.id/ctf_aria/cryptography/E_Mod 26.html


soal

Cryptography can be easy, do you know what ROT13 is?
cvpbPGS{arkg_gvzr_V’yy_gel_2_ebhaqf_bs_ebg13_Ncualgvd}

hint

  • This can be solved online if you don’t want to do it by hand!

solve

echo "cvpbPGS{arkg_gvzr_V'yy_gel_2_ebhaqf_bs_ebg13_Ncualgvd}" | tr '[A-Za-z]' '[N-ZA-Mn-za-m]'
# picoCTF{next_time_I'll_try_2_rounds_of_rot13_Aphnytiq}

flag

picoCTF{next_time_I’ll_try_2_rounds_of_rot13_Aphnytiq}