clavdivs

We are given a simple string: MOIv/q.Z>\`n/mZH+m,opm,ZO.ZN/gpo\iox% with the hint AVE CLAVDIVS!. To be quite honest, this challenge flew right over my head the first time. I initially tried just using cyberchef but that lead nowhere (mostly thanks to me not playing with the settings enough). So for a few days this challenge was unsolved for me, I got so desperate that I can’t solve the easiest challenge in the CTF that I even asked for hints… yeah.

Turns out that I overcomplicated stuff (as usual), I tried to see if there was some XOR encryption going on, but no, it turned out to be a simple caesar cypher. After using an online tool (or we use cyberchef with the correct settings, ROT47 with amount set to 5), we get the flag: RTN{4v3_Caes4r_M0r1tur1_T3_S4lutant}.