Identified author

Published date : 4. Januar 2020 00:16
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 830 4. Januar 2020 03:57
Danhia 400 4. Januar 2020 12:22
antox https://www.w0nderland.fr 195 13. Juni 2020 11:50
Unactive 465 25. Januar 2021 14:10
arpascal https://arnaud.sh 1655 27. Januar 2021 22:49
molivier 520 17. April 2021 02:53
Yir 920 17. Oktober 2021 21:38
42stillsucks https://www.youtube.com/watch?v=hfTAv8htci8 1065 29. Oktober 2021 21:28
00101010 995 24. Dezember 2021 16:27
lmartin 1060 8. März 2022 17:45
nieyraud 870 8. März 2022 17:47
S_in https://twitter.com/sin_infosec 885 9. März 2022 23:48
clinche https://github.com/clinche 1870 17. März 2022 12:45
tpeters 165 12. Juni 2022 13:16
Nyr 190 16. Oktober 2022 15:11
riblanc 1255 19. Februar 2023 13:02
Syca https://cyrihack.fr 1325 6. April 2023 17:29
asarandi https://github.com/asarandi 1870 23. Mai 2023 00:30
Nics 110 2. Juni 2023 13:03
eclypse666 520 31. August 2023 22:39
hsabir-xoreaxeax https://github.com/lenartlola 1525 27. September 2023 11:50
albaud https://github.com/Gymnopediese 655 13. Oktober 2023 12:34
Ardcord 1075 22. Oktober 2023 11:09
Narmand 100 14. November 2023 17:20
Nochance 120 17. November 2023 18:00
MinjaeLee https://github.com/MinjeaLee 1785 26. September 2024 10:56
BenJ4368 150 15. November 2024 13:36
a8ymgi01w@mozmail.com 155 15. November 2024 13:36
chabrune 90 15. November 2024 13:43
UncleReaton https://unclereaton.dev 705 23. März 2025 00:18
ikkiw 1040 23. Mai 2025 13:45
altaubee https://github.com/taubeskiceh 115 17. August 2025 23:56
Dueshell 275 10. Dezember 2025 19:09
bouliboula 440 11. Dezember 2025 09:50
  • Author : Danhia
  • Point reward : 55