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	985	Jan. 4, 2020, 3:57 a.m.
Danhia		455	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	1940	Jan. 27, 2021, 10:49 p.m.
molivier		605	April 17, 2021, 2:53 a.m.
Yir		1060	Oct. 17, 2021, 9:38 p.m.
42stillsucks	https://www.youtube.com/watch?v=hfTAv8htci8	1230	Oct. 29, 2021, 9:28 p.m.
00101010		1185	Dec. 24, 2021, 4:27 p.m.
lmartin		1235	March 8, 2022, 5:45 p.m.
nieyraud		1035	March 8, 2022, 5:47 p.m.
S_in	https://twitter.com/sin_infosec	1035	March 9, 2022, 11:48 p.m.
clinche	https://github.com/clinche	1150	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		1190	Feb. 19, 2023, 1:02 p.m.
Syca	https://cyrihack.fr	1570	April 6, 2023, 5:29 p.m.
asarandi	https://github.com/asarandi	2175	May 23, 2023, 12:30 a.m.
Nics		140	June 2, 2023, 1:03 p.m.
eclypse666		630	Aug. 31, 2023, 10:39 p.m.
hsabir-xoreaxeax	https://github.com/lenartlola	1235	Sept. 27, 2023, 11:50 a.m.
albaud	https://github.com/Gymnopediese	785	Oct. 13, 2023, 12:34 p.m.
Ardcord		985	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	2085	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.
UncleReaton	https://unclereaton.dev	805	March 23, 2025, 12:18 a.m.