RTCP - HOOOOOOOOOOMEEEEEE RUNNNNNNNNNNNNN!!!!!
Posted on sam. 25 janvier 2020 in CTF
solves : 605
Point : 50
AND JAKE IS ROUNDING THE BASES
HE PASSES BASE 32!!!
HE ROUNDS BASE 64!!!!!!!
WE'RE WITNESSING A MIRACLE!!!!!!!!!!!!!
Just one more base to go ;D
Hint : Ecbf1HZ_kd8jR5K?[";(7;aJp?[4>J?Slk3<+n'pF]W^,F>._lB/=r
We are looking for the a new base encoding and this base is the next one after base64. It's not base128 and should be a base between 64 et 128.
After some research, we found that the base85 exists. We can use it with the code found in github : https://github.com/judsonx/base85.
We clone, build and make the code from the source. We can put the hint within a file or use |
to avoit it.
$ echo "Ecbf1HZ_kd8jR5K?[\";(7;aJp?[4>J?Slk3<+n'pF]W^,F>._lB/=r" | ./build/ascii85 -d
rtcp{uH_JAk3_w3REn't_y0u_4t_Th3_uWust0r4g3}