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 760 Jan. 4, 2020, 3:57 a.m.
Danhia 355 Jan. 4, 2020, 12:22 p.m.
antox https://www.w0nderland.fr 175 June 13, 2020, 11:50 a.m.
Unactive 425 Jan. 25, 2021, 2:10 p.m.
arpascal https://arnaud.sh 1520 Jan. 27, 2021, 10:49 p.m.
molivier 470 April 17, 2021, 2:53 a.m.
Yir 835 Oct. 17, 2021, 9:38 p.m.
42stillsucks https://www.youtube.com/watch?v=hfTAv8htci8 975 Oct. 29, 2021, 9:28 p.m.
00101010 905 Dec. 24, 2021, 4:27 p.m.
lmartin 975 March 8, 2022, 5:45 p.m.
nieyraud 790 March 8, 2022, 5:47 p.m.
S_in https://twitter.com/sin_infosec 815 March 9, 2022, 11:48 p.m.
clinche https://github.com/clinche 1705 March 17, 2022, 12:45 p.m.
tpeters 150 June 12, 2022, 1:16 p.m.
Nyr 175 Oct. 16, 2022, 3:11 p.m.
riblanc 1150 Feb. 19, 2023, 1:02 p.m.
Syca https://cyrihack.fr 1220 April 6, 2023, 5:29 p.m.
asarandi https://github.com/asarandi 1705 May 23, 2023, 12:30 a.m.
Nics 95 June 2, 2023, 1:03 p.m.
eclypse666 480 Aug. 31, 2023, 10:39 p.m.
hsabir-xoreaxeax https://github.com/lenartlola 1400 Sept. 27, 2023, 11:50 a.m.
albaud https://github.com/Gymnopediese 590 Oct. 13, 2023, 12:34 p.m.
Ardcord 1150 Oct. 22, 2023, 11:09 a.m.
Narmand 90 Nov. 14, 2023, 5:20 p.m.
Nochance 110 Nov. 17, 2023, 6 p.m.
MinjaeLee https://github.com/MinjeaLee 1620 Sept. 26, 2024, 10:56 a.m.
BenJ4368 135 Nov. 15, 2024, 1:36 p.m.
a8ymgi01w@mozmail.com 140 Nov. 15, 2024, 1:36 p.m.
chabrune 80 Nov. 15, 2024, 1:43 p.m.
UncleReaton https://unclereaton.dev 645 March 23, 2025, 12:18 a.m.
ikkiw 945 May 23, 2025, 1:45 p.m.
altaubee https://github.com/taubeskiceh 100 Aug. 17, 2025, 11:56 p.m.
Dueshell 410 Dec. 10, 2025, 7:09 p.m.
bouliboula 515 Dec. 11, 2025, 9:50 a.m.
skav https://www.logogenie.fr 1665 Jan. 7, 2026, 8:37 a.m.
paulo-do 205 March 5, 2026, 2:04 a.m.
timatias https://github.com/tiagomatias930/tiagomatias930 830 March 22, 2026, 4:12 a.m.
Aoniii https://github.com/Aoniii 995 April 3, 2026, 2:36 p.m.
joabotel 270 April 15, 2026, 7:10 p.m.
  • Author : Danhia
  • Point reward : 45