Identified author

Published date : Jan. 4, 2020, 12:16 a.m.
Hill Cipher - Known plaintext
Our spy has intercepted this message. It contains the meeting place of double agents working for our enemies. Unfortunately, we haven't decrypted it yet.

The only hint we have is the name of the author that our spy has been able to identify: BROWN.

Good luck.

PS: the flag is 42CTF{THEPLACEOFMEETING}

Solved by

Username Website Score Date
reveng https://twitter.com/revengsh 825 Jan. 4, 2020, 3:57 a.m.
Danhia 395 Jan. 4, 2020, 12:22 p.m.
antox https://www.w0nderland.fr 195 June 13, 2020, 11:50 a.m.
Unactive 460 Jan. 25, 2021, 2:10 p.m.
arpascal https://arnaud.sh 1640 Jan. 27, 2021, 10:49 p.m.
molivier 520 April 17, 2021, 2:53 a.m.
Yir 910 Oct. 17, 2021, 9:38 p.m.
42stillsucks https://www.youtube.com/watch?v=hfTAv8htci8 1060 Oct. 29, 2021, 9:28 p.m.
00101010 985 Dec. 24, 2021, 4:27 p.m.
lmartin 1055 March 8, 2022, 5:45 p.m.
nieyraud 860 March 8, 2022, 5:47 p.m.
S_in https://twitter.com/sin_infosec 880 March 9, 2022, 11:48 p.m.
clinche https://github.com/clinche 1845 March 17, 2022, 12:45 p.m.
tpeters 165 June 12, 2022, 1:16 p.m.
Nyr 190 Oct. 16, 2022, 3:11 p.m.
riblanc 1240 Feb. 19, 2023, 1:02 p.m.
Syca https://cyrihack.fr 1310 April 6, 2023, 5:29 p.m.
asarandi https://github.com/asarandi 1845 May 23, 2023, 12:30 a.m.
Nics 110 June 2, 2023, 1:03 p.m.
eclypse666 515 Aug. 31, 2023, 10:39 p.m.
hsabir-xoreaxeax https://github.com/lenartlola 1510 Sept. 27, 2023, 11:50 a.m.
albaud https://github.com/Gymnopediese 645 Oct. 13, 2023, 12:34 p.m.
Ardcord 1065 Oct. 22, 2023, 11:09 a.m.
Narmand 100 Nov. 14, 2023, 5:20 p.m.
Nochance 120 Nov. 17, 2023, 6 p.m.
MinjaeLee https://github.com/MinjeaLee 1760 Sept. 26, 2024, 10:56 a.m.
BenJ4368 150 Nov. 15, 2024, 1:36 p.m.
a8ymgi01w@mozmail.com 155 Nov. 15, 2024, 1:36 p.m.
chabrune 90 Nov. 15, 2024, 1:43 p.m.
UncleReaton https://unclereaton.dev 695 March 23, 2025, 12:18 a.m.
ikkiw 1030 May 23, 2025, 1:45 p.m.
altaubee https://github.com/taubeskiceh 115 Aug. 17, 2025, 11:56 p.m.
Dueshell 445 Dec. 10, 2025, 7:09 p.m.
bouliboula 545 Dec. 11, 2025, 9:50 a.m.