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 875 Jan. 4, 2020, 3:57 a.m.
Danhia 410 Jan. 4, 2020, 12:22 p.m.
antox https://www.w0nderland.fr 205 June 13, 2020, 11:50 a.m.
Unactive 480 Jan. 25, 2021, 2:10 p.m.
arpascal https://arnaud.sh 1725 Jan. 27, 2021, 10:49 p.m.
molivier 530 April 17, 2021, 2:53 a.m.
Yir 955 Oct. 17, 2021, 9:38 p.m.
42stillsucks https://www.youtube.com/watch?v=hfTAv8htci8 1100 Oct. 29, 2021, 9:28 p.m.
00101010 1040 Dec. 24, 2021, 4:27 p.m.
lmartin 1095 March 8, 2022, 5:45 p.m.
nieyraud 900 March 8, 2022, 5:47 p.m.
S_in https://twitter.com/sin_infosec 930 March 9, 2022, 11:48 p.m.
clinche https://github.com/clinche 1580 March 17, 2022, 12:45 p.m.
tpeters 175 June 12, 2022, 1:16 p.m.
Nyr 195 Oct. 16, 2022, 3:11 p.m.
riblanc 1040 Feb. 19, 2023, 1:02 p.m.
Syca https://cyrihack.fr 1375 April 6, 2023, 5:29 p.m.
asarandi https://github.com/asarandi 1955 May 23, 2023, 12:30 a.m.
Nics 115 June 2, 2023, 1:03 p.m.
eclypse666 535 Aug. 31, 2023, 10:39 p.m.
hsabir-xoreaxeax https://github.com/lenartlola 1585 Sept. 27, 2023, 11:50 a.m.
albaud https://github.com/Gymnopediese 675 Oct. 13, 2023, 12:34 p.m.
Ardcord 835 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 1865 Sept. 26, 2024, 10:56 a.m.
BenJ4368 155 Nov. 15, 2024, 1:36 p.m.
a8ymgi01w@mozmail.com 160 Nov. 15, 2024, 1:36 p.m.
chabrune 90 Nov. 15, 2024, 1:43 p.m.
UncleReaton https://unclereaton.dev 680 March 23, 2025, 12:18 a.m.
ikkiw 1085 May 23, 2025, 1:45 p.m.