like every year i participated in the hacky easter event powered by hacking lab.
the event is over, but you still can access the webpage for some weeks: https://hackyeaster.hacking-lab.com
and of course i solved all challenges (including the teaser) and did writeup with my solutions. here you can get them: http://www.kolbi.cz/Hacky_Easter_2017_solution_by_hardlock.zip
ENJOY and see you next year!