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	1025	Jan. 4, 2020, 3:57 a.m.
Danhia		490	Jan. 4, 2020, 12:22 p.m.
antox	https://www.w0nderland.fr	255	June 13, 2020, 11:50 a.m.
Unactive		565	Jan. 25, 2021, 2:10 p.m.
arpascal	https://arnaud.sh	2035	Jan. 27, 2021, 10:49 p.m.
molivier		645	April 17, 2021, 2:53 a.m.
Yir		1125	Oct. 17, 2021, 9:38 p.m.
42stillsucks	https://www.youtube.com/watch?v=hfTAv8htci8	1300	Oct. 29, 2021, 9:28 p.m.
00101010	https://youtu.be/dQw4w9WgXcQ	1255	Dec. 24, 2021, 4:27 p.m.
lmartin		1310	March 8, 2022, 5:45 p.m.
nieyraud		1105	March 8, 2022, 5:47 p.m.
S_in	https://twitter.com/sin_infosec	1080	March 9, 2022, 11:48 p.m.
clinche	https://github.com/clinche	1225	March 17, 2022, 12:45 p.m.
tpeters		225	June 12, 2022, 1:16 p.m.
Nyr		245	Oct. 16, 2022, 3:11 p.m.
riblanc		1275	Feb. 19, 2023, 1:02 p.m.
Syca	https://cyrihack.fr	1660	April 6, 2023, 5:29 p.m.
asarandi	https://github.com/asarandi	2300	May 23, 2023, 12:30 a.m.
Nics		150	June 2, 2023, 1:03 p.m.
laird_ikar		670	Aug. 31, 2023, 10:39 p.m.
hsabir-xoreaxeax	https://github.com/lenartlola	1320	Sept. 27, 2023, 11:50 a.m.
albaud	https://github.com/Gymnopediese	840	Oct. 13, 2023, 12:34 p.m.
Ardcord		1050	Oct. 22, 2023, 11:09 a.m.
Narmand		120	Nov. 14, 2023, 5:20 p.m.
Nochance		140	Nov. 17, 2023, 6 p.m.