Note that we also provide write-ups and files for CTFs in 2013 [0], 2014 [1] and this year [2]. If you don&#x27;t know what CTFs are: <a href="https:&#x2F;&#x2F;ctftime.org&#x2F;ctf-wtf&#x2F;" rel="nofollow">https:&#x2F;&#x2F;ctftime.org&#x2F;ctf-wtf&#x2F;</a><p>[0]: <a href="https:&#x2F;&#x2F;github.com&#x2F;ctfs&#x2F;write-ups-2013" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;ctfs&#x2F;write-ups-2013</a><p>[1]: <a href="https:&#x2F;&#x2F;github.com&#x2F;ctfs&#x2F;write-ups-2014" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;ctfs&#x2F;write-ups-2014</a><p>[2]: <a href="https:&#x2F;&#x2F;github.com&#x2F;ctfs&#x2F;write-ups-2016" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;ctfs&#x2F;write-ups-2016</a>