hxp 36C3 CTF

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flag concat

by ufo
zahjebischte pwn baby

Difficulty estimate: easy - easy

Points: round(1000 · min(1, 10 / (9 + [32 solves]))) = 244 points

Description:

While looking for scripts to reuse from last year hxp CTF, we found this service running on one of our servers. This service concats hxp flags for easier shipment. Because hxp produces so much flags one dedicated server running only this script was necessary.


Download:

flag concat-5de44b85501c41df.tar.xz (12.9 KiB)

Connection:

nc 78.47.126.177 7777


Solution:


CTFtime Logo CTFtime: Task & Writeups

Solved by:

# Team Time
🥇 Shellphish 2019-12-28 02:32:29 +0000 UTC
🥈 The Flat Network Society 2019-12-28 03:34:47 +0000 UTC
🥉 pasten 2019-12-28 03:37:14 +0000 UTC
4 Dragon Sector 2019-12-28 04:00:30 +0000 UTC
5 KJC+f0f+Spotless+SF+mhackeroni 2019-12-28 05:17:14 +0000 UTC
6 r00timentary 2019-12-28 06:24:05 +0000 UTC
7 TokyoWesterns 2019-12-28 06:29:10 +0000 UTC
8 Balsn 2019-12-28 07:39:36 +0000 UTC
9 NeSE 2019-12-28 08:37:46 +0000 UTC
10 InfoSecIITR 2019-12-28 10:29:01 +0000 UTC
11 CodeRed 2019-12-28 11:35:47 +0000 UTC
12 A*0*E 2019-12-28 11:45:42 +0000 UTC
13 LC↯BC 2019-12-28 13:49:43 +0000 UTC
14 5BC 2019-12-28 18:50:57 +0000 UTC
15 Tea Deliverers 2019-12-28 18:51:41 +0000 UTC
16 openctfid 2019-12-28 19:44:31 +0000 UTC
17 foobarfoobar 2019-12-28 19:51:53 +0000 UTC
18 cr0wn 2019-12-28 20:19:23 +0000 UTC
19 ALLES 2019-12-28 21:03:55 +0000 UTC
20 perfect blue 2019-12-28 22:22:19 +0000 UTC
21 ENOFLAG 2019-12-28 22:47:45 +0000 UTC
22 ELT 2019-12-28 22:52:43 +0000 UTC
23 celebr0s 2019-12-29 01:10:00 +0000 UTC
24 Dice Squad 2019-12-29 04:40:59 +0000 UTC
25 PFS 2019-12-29 04:45:32 +0000 UTC
26 CyKor 2019-12-29 07:59:06 +0000 UTC
27 paunthezen 2019-12-29 11:26:04 +0000 UTC
28 WE_0WN_Y0U 2019-12-29 12:08:14 +0000 UTC
29 TSG 2019-12-29 12:30:52 +0000 UTC
30 FluxFingers 2019-12-29 12:51:38 +0000 UTC
31 Tasteless 2019-12-29 14:20:16 +0000 UTC
32 OpenToAll 2019-12-29 19:18:57 +0000 UTC