hxp 36C3 CTF

The CTF is over, thanks for playing! hxp <3 you! ๐Ÿ˜Š
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by yyyyyyy
zahjebischte pwn

Difficulty estimate: medium - medium

Points: round(1000 ยท min(1, 10 / (9 + [6 solves]))) = 667 points


I really, really like this lovingly handcrafted OS. It would be a shame if something happened to it…

This is commit # fd06164fa0cee25ab69c701897de0a4bd03537d6 with the attached patch applied. Flag is in /dev/hdb.

Note that the setup of this task is perhaps a bit shaky: If you don’t get a shell prompt within a few seconds after solving the proof of work, something is wrong. Each connection has a time limit of 5 minutes and 30 seconds of CPU time, whichever happens first; you may contact us in case this causes problems for you.


wisdom-601e2adb9f44b61f.tar.xz (9.5 MiB)


nc 2323


CTFtime Logo CTFtime: Task & Writeups

Solved by:

# Team Time
๐Ÿฅ‡ 5BC 2019-12-28 14:55:09 +0000 UTC
๐Ÿฅˆ pasten 2019-12-28 17:07:45 +0000 UTC
๐Ÿฅ‰ Fire30 2019-12-28 23:16:12 +0000 UTC
4 perfect blue 2019-12-29 00:06:48 +0000 UTC
5 r00timentary 2019-12-29 02:19:03 +0000 UTC
6 Dragon Sector 2019-12-29 16:25:07 +0000 UTC