19 - Zombie Reminder

Zombies love brains. But zombies forget, so they have a tool where they can enter the location of brains they found. In a heroic mission someone managed to obtain both the source code and the information that a critical file can be found at '/var/www/flag'. Your mission is to obtain the contents of this file by any means and avenge your fallen friend! Service: zombie reminder Source: zombie_reminder.py
 

credits: 200 +3 (1st), +2 (2nd), +1 (3rd)