> For the complete documentation index, see [llms.txt](https://ctf.0xff.re/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ctf.0xff.re/2019/x-mas_ctf_2019.md).

# X-MAS CTF 2019

I participated with SHRECS.