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	1005	Jan. 4, 2020, 3:57 a.m.
Danhia		465	Jan. 4, 2020, 12:22 p.m.
antox	https://www.w0nderland.fr	240	June 13, 2020, 11:50 a.m.
Unactive		530	Jan. 25, 2021, 2:10 p.m.
arpascal	https://arnaud.sh	1970	Jan. 27, 2021, 10:49 p.m.
molivier		615	April 17, 2021, 2:53 a.m.
Yir		1080	Oct. 17, 2021, 9:38 p.m.
42stillsucks	https://www.youtube.com/watch?v=hfTAv8htci8	1250	Oct. 29, 2021, 9:28 p.m.
00101010		1210	Dec. 24, 2021, 4:27 p.m.
lmartin		1260	March 8, 2022, 5:45 p.m.
nieyraud		1055	March 8, 2022, 5:47 p.m.
S_in	https://twitter.com/sin_infosec	1055	March 9, 2022, 11:48 p.m.
clinche	https://github.com/clinche	1185	March 17, 2022, 12:45 p.m.
tpeters		210	June 12, 2022, 1:16 p.m.
Nyr		230	Oct. 16, 2022, 3:11 p.m.
riblanc		1225	Feb. 19, 2023, 1:02 p.m.
Syca	https://cyrihack.fr	1605	April 6, 2023, 5:29 p.m.
asarandi	https://github.com/asarandi	2215	May 23, 2023, 12:30 a.m.
Nics		140	June 2, 2023, 1:03 p.m.
eclypse666		645	Aug. 31, 2023, 10:39 p.m.
hsabir-xoreaxeax	https://github.com/lenartlola	1265	Sept. 27, 2023, 11:50 a.m.
albaud	https://github.com/Gymnopediese	810	Oct. 13, 2023, 12:34 p.m.
Ardcord		1010	Oct. 22, 2023, 11:09 a.m.
Narmand		115	Nov. 14, 2023, 5:20 p.m.
Nochance		135	Nov. 17, 2023, 6 p.m.
MinjaeLee	https://github.com/MinjeaLee	2095	Sept. 26, 2024, 10:56 a.m.
BenJ4368		180	Nov. 15, 2024, 1:36 p.m.
a8ymgi01w@mozmail.com		185	Nov. 15, 2024, 1:36 p.m.
chabrune		95	Nov. 15, 2024, 1:43 p.m.