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 835 Jan. 4, 2020, 3:57 a.m.
Danhia 400 Jan. 4, 2020, 12:22 p.m.
antox https://www.w0nderland.fr 200 June 13, 2020, 11:50 a.m.
Unactive 470 Jan. 25, 2021, 2:10 p.m.
arpascal https://arnaud.sh 1660 Jan. 27, 2021, 10:49 p.m.
molivier 520 April 17, 2021, 2:53 a.m.
Yir 920 Oct. 17, 2021, 9:38 p.m.
42stillsucks https://www.youtube.com/watch?v=hfTAv8htci8 1070 Oct. 29, 2021, 9:28 p.m.
00101010 995 Dec. 24, 2021, 4:27 p.m.
lmartin 1060 March 8, 2022, 5:45 p.m.
nieyraud 870 March 8, 2022, 5:47 p.m.
S_in https://twitter.com/sin_infosec 890 March 9, 2022, 11:48 p.m.
clinche https://github.com/clinche 1875 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 1255 Feb. 19, 2023, 1:02 p.m.
Syca https://cyrihack.fr 1325 April 6, 2023, 5:29 p.m.
asarandi https://github.com/asarandi 1875 May 23, 2023, 12:30 a.m.
Nics 110 June 2, 2023, 1:03 p.m.
eclypse666 520 Aug. 31, 2023, 10:39 p.m.
hsabir-xoreaxeax https://github.com/lenartlola 1530 Sept. 27, 2023, 11:50 a.m.
albaud https://github.com/Gymnopediese 655 Oct. 13, 2023, 12:34 p.m.
Ardcord 1075 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 1790 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 705 March 23, 2025, 12:18 a.m.
ikkiw 1040 May 23, 2025, 1:45 p.m.
altaubee https://github.com/taubeskiceh 115 Aug. 17, 2025, 11:56 p.m.