Tags: perl 


# Mooo
The challenge allows the use of cowsay on a website.

It execute the cowfile as if it was Perl!

It reads the file till 'EOC', and after that we can inject our code that will be executed. So we can just give as input

system("cat flag");
and we will get the flag!

Original writeup (https://github.com/0ssigeno/Writeups/tree/master/advent2019/mooo).