Hackvent 2019: Hidden 4

14 Dec 2019
CTF: Hackvent 2019
Link to challenge:
Date Completed: 14 December 2019


HV19.H4 Hidden Four


During the Day 14 challenge HV19.14 Achtung das Flag, our final flag looks quite interesting:

The hints in the __DATA__ segment point us in the right direction:

So we evaluate the string as Perl code like so:

This prints out the content of our hidden flag:
Squ4ring the Circle

Flag:  HV19{Squ4ring the Circle}

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