Challenge Description
Author: @John Hammond
WOW!! Look at all these free flags!!
But… wait a second… only one of them is right??
Solution
running less shows bunch of flags
there’s only one flag in the file that’s valid hexadecimal
python -c 'import re; print(re.findall(r"flag\{[a-f0-9]+?\}", open("free_flags.txt").read())[0])'
flag{ae6b6fb0686ec594652afe9eb6088167}