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 870 Jan. 4, 2020, 3:57 a.m.
Danhia 405 Jan. 4, 2020, 12:22 p.m.
antox https://www.w0nderland.fr 200 June 13, 2020, 11:50 a.m.
Unactive 475 Jan. 25, 2021, 2:10 p.m.
arpascal https://arnaud.sh 1710 Jan. 27, 2021, 10:49 p.m.
molivier 525 April 17, 2021, 2:53 a.m.
Yir 950 Oct. 17, 2021, 9:38 p.m.
42stillsucks https://www.youtube.com/watch?v=hfTAv8htci8 1090 Oct. 29, 2021, 9:28 p.m.
00101010 1030 Dec. 24, 2021, 4:27 p.m.
lmartin 1080 March 8, 2022, 5:45 p.m.
nieyraud 885 March 8, 2022, 5:47 p.m.
S_in https://twitter.com/sin_infosec 925 March 9, 2022, 11:48 p.m.
clinche https://github.com/clinche 1820 March 17, 2022, 12:45 p.m.
tpeters 170 June 12, 2022, 1:16 p.m.
Nyr 190 Oct. 16, 2022, 3:11 p.m.
riblanc 1035 Feb. 19, 2023, 1:02 p.m.
Syca https://cyrihack.fr 1365 April 6, 2023, 5:29 p.m.
asarandi https://github.com/asarandi 1930 May 23, 2023, 12:30 a.m.
Nics 110 June 2, 2023, 1:03 p.m.
eclypse666 530 Aug. 31, 2023, 10:39 p.m.
hsabir-xoreaxeax https://github.com/lenartlola 1575 Sept. 27, 2023, 11:50 a.m.
albaud https://github.com/Gymnopediese 675 Oct. 13, 2023, 12:34 p.m.
Ardcord 830 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 1845 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 675 March 23, 2025, 12:18 a.m.
ikkiw 1080 May 23, 2025, 1:45 p.m.
altaubee https://github.com/taubeskiceh 115 Aug. 17, 2025, 11:56 p.m.