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	960	Jan. 4, 2020, 3:57 a.m.
Danhia		440	Jan. 4, 2020, 12:22 p.m.
antox	https://www.w0nderland.fr	225	June 13, 2020, 11:50 a.m.
Unactive		515	Jan. 25, 2021, 2:10 p.m.
arpascal	https://arnaud.sh	1900	Jan. 27, 2021, 10:49 p.m.
molivier		590	April 17, 2021, 2:53 a.m.
Yir		1040	Oct. 17, 2021, 9:38 p.m.
42stillsucks	https://www.youtube.com/watch?v=hfTAv8htci8	1205	Oct. 29, 2021, 9:28 p.m.
00101010		1155	Dec. 24, 2021, 4:27 p.m.
lmartin		1205	March 8, 2022, 5:45 p.m.
nieyraud		1010	March 8, 2022, 5:47 p.m.
S_in	https://twitter.com/sin_infosec	1005	March 9, 2022, 11:48 p.m.
clinche	https://github.com/clinche	1130	March 17, 2022, 12:45 p.m.
tpeters		195	June 12, 2022, 1:16 p.m.
Nyr		220	Oct. 16, 2022, 3:11 p.m.
riblanc		1170	Feb. 19, 2023, 1:02 p.m.
Syca	https://cyrihack.fr	1540	April 6, 2023, 5:29 p.m.
asarandi	https://github.com/asarandi	2135	May 23, 2023, 12:30 a.m.
Nics		130	June 2, 2023, 1:03 p.m.
eclypse666		620	Aug. 31, 2023, 10:39 p.m.
hsabir-xoreaxeax	https://github.com/lenartlola	1680	Sept. 27, 2023, 11:50 a.m.
albaud	https://github.com/Gymnopediese	765	Oct. 13, 2023, 12:34 p.m.
Ardcord		960	Oct. 22, 2023, 11:09 a.m.
Narmand		110	Nov. 14, 2023, 5:20 p.m.
Nochance		130	Nov. 17, 2023, 6 p.m.
MinjaeLee	https://github.com/MinjeaLee	2045	Sept. 26, 2024, 10:56 a.m.
BenJ4368		170	Nov. 15, 2024, 1:36 p.m.
a8ymgi01w@mozmail.com		175	Nov. 15, 2024, 1:36 p.m.
chabrune		95	Nov. 15, 2024, 1:43 p.m.
UncleReaton	https://unclereaton.dev	780	March 23, 2025, 12:18 a.m.