hxp 36C3 CTF

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poor canary's revenge

by aengelke
pwn

Difficulty estimate: medium - medium

Points: round(1000 · min(1, 10 / (9 + [21 solves]))) = 333 points

Description:

Revenge time: Please hack.

Note: For reasons semi-beyond our control, the binary sometimes crashes when you connect. Please just retry if this happens. Sorry for the inconvenience!


Download:

poor canary’s revenge-b81a42dbe2f03e70.tar.xz (218.3 KiB)

Connection:

nc 78.46.187.186 7001


Solution:


CTFtime Logo CTFtime: Task & Writeups

Solved by:

# Team Time
🥇 r00timentary 2019-12-28 14:45:53 +0000 UTC
🥈 OpenToAll 2019-12-28 15:02:15 +0000 UTC
🥉 CodeRed 2019-12-28 17:03:15 +0000 UTC
4 Balsn 2019-12-28 17:49:02 +0000 UTC
5 The Flat Network Society 2019-12-28 18:15:54 +0000 UTC
6 KJC+f0f+Spotless+SF+mhackeroni 2019-12-28 19:26:33 +0000 UTC
7 pasten 2019-12-28 19:36:03 +0000 UTC
8 perfect blue 2019-12-28 19:49:25 +0000 UTC
9 Dragon Sector 2019-12-28 19:50:24 +0000 UTC
10 LC↯BC 2019-12-28 22:25:25 +0000 UTC
11 PFS 2019-12-28 23:24:24 +0000 UTC
12 Shellphish 2019-12-29 00:09:00 +0000 UTC
13 FluxFingers 2019-12-29 01:46:20 +0000 UTC
14 RPISEC 2019-12-29 05:10:47 +0000 UTC
15 A*0*E 2019-12-29 11:48:52 +0000 UTC
16 Tasteless 2019-12-29 13:20:21 +0000 UTC
17 pwd 2019-12-29 15:12:59 +0000 UTC
18 InfoSecIITR 2019-12-29 19:10:06 +0000 UTC
19 p4 2019-12-29 19:16:23 +0000 UTC
20 5BC 2019-12-29 19:38:56 +0000 UTC
21 TokyoWesterns 2019-12-29 19:46:42 +0000 UTC