hxp CTF 2022 hxp

2022

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required

by sandr0
rev web

Difficulty estimate: easy - easy

Points: round(1000 ยท min(1, 10 / (9 + [46 solves]))) = 182 points

Description:

I have written a super safe flag encryptor. I’m sure nobody can figure out what my original flag was:

0xd19ee193b461fd8d1452e7659acb1f47dc3ed445c8eb4ff191b1abfa7969

Dockerfile for your convenience / to ensure correct environment.


Download:

required-27edfc0c02c5f748.tar.xz (11.4 KiB)

Solved by:

# Team Time
required released 2023-03-11 09:11:42 +0000 UTC
๐Ÿฅ‡ Katzebin 2023-03-11 10:25:52 +0000 UTC
๐Ÿฅˆ Hot Ice Americano 2023-03-11 12:12:45 +0000 UTC
๐Ÿฅ‰ Blue Water 2023-03-11 12:34:30 +0000 UTC
4 Never Stop Exploiting 2023-03-11 13:20:50 +0000 UTC
5 justCatTheFish 2023-03-11 13:25:32 +0000 UTC
6 thehackerscrew 2023-03-11 13:45:35 +0000 UTC
7 r3kapig 2023-03-11 13:50:24 +0000 UTC
8 Black Bauhinia 2023-03-11 14:00:51 +0000 UTC
9 purf3ct 2023-03-11 14:09:22 +0000 UTC
10 Kalmarunionen 2023-03-11 15:09:34 +0000 UTC
11 CyberSecurityAustria 2023-03-11 15:14:57 +0000 UTC
12 Dragon Sector 2023-03-11 15:40:54 +0000 UTC
13 The Flat Network Society 2023-03-11 16:17:19 +0000 UTC
14 Balsn 2023-03-11 16:36:01 +0000 UTC
15 Straw Hat 2023-03-11 16:54:32 +0000 UTC
16 about:blankets 2023-03-11 17:28:30 +0000 UTC
17 copy 2023-03-11 18:24:14 +0000 UTC
18 Unlikely 2023-03-11 18:55:48 +0000 UTC
19 Zer0Tolerance 2023-03-11 19:27:38 +0000 UTC
20 IQ-toppene 2023-03-11 19:42:17 +0000 UTC
21 selectric 2023-03-11 19:58:58 +0000 UTC
22 Super Guesser 2023-03-11 20:36:10 +0000 UTC
23 KITCTF 2023-03-11 21:12:29 +0000 UTC
24 mode13h 2023-03-11 22:07:43 +0000 UTC
25 TU Delft CTF Team 2023-03-11 22:13:54 +0000 UTC
26 ./Vespiary 2023-03-11 22:39:42 +0000 UTC
27 idek 2023-03-11 22:50:18 +0000 UTC
28 pasten 2023-03-11 23:29:13 +0000 UTC
29 STT 2023-03-12 01:20:49 +0000 UTC
30 Hexagon 2023-03-12 01:26:34 +0000 UTC
31 Polaris 2023-03-12 02:44:42 +0000 UTC
32 tasteless 2023-03-12 05:41:20 +0000 UTC
33 sln.1550 2023-03-12 06:36:28 +0000 UTC
34 0RAYS 2023-03-12 07:25:07 +0000 UTC
35 return catbui; 2023-03-12 09:03:53 +0000 UTC
36 Maple Bacon 2023-03-12 09:05:24 +0000 UTC
37 galhacktic trendsetters 2023-03-12 09:20:34 +0000 UTC
38 RootCubed 2023-03-12 10:28:17 +0000 UTC
39 796f75 2023-03-12 10:40:11 +0000 UTC
40 pizarron 2023-03-12 11:29:07 +0000 UTC
41 Aali 2023-03-12 11:50:59 +0000 UTC
42 ALLES! 2023-03-12 12:20:41 +0000 UTC
43 bi0s 2023-03-12 12:46:28 +0000 UTC
44 ST4RT 2023-03-12 13:01:25 +0000 UTC
45 mhackeroni 2023-03-12 13:07:33 +0000 UTC
46 RedRocket 2023-03-12 15:30:11 +0000 UTC