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 915 4. Januar 2020 03:57
Danhia 420 4. Januar 2020 12:22
antox https://www.w0nderland.fr 215 13. Juni 2020 11:50
Unactive 495 25. Januar 2021 14:10
arpascal https://arnaud.sh 1805 27. Januar 2021 22:49
molivier 550 17. April 2021 02:53
Yir 990 17. Oktober 2021 21:38
42stillsucks https://www.youtube.com/watch?v=hfTAv8htci8 1150 29. Oktober 2021 21:28
00101010 1095 24. Dezember 2021 16:27
lmartin 1150 8. März 2022 17:45
nieyraud 945 8. März 2022 17:47
S_in https://twitter.com/sin_infosec 970 9. März 2022 23:48
clinche https://github.com/clinche 1050 17. März 2022 12:45
tpeters 180 12. Juni 2022 13:16
Nyr 205 16. Oktober 2022 15:11
riblanc 1085 19. Februar 2023 13:02
Syca https://cyrihack.fr 1445 6. April 2023 17:29
asarandi https://github.com/asarandi 2035 23. Mai 2023 00:30
Nics 120 2. Juni 2023 13:03
eclypse666 555 31. August 2023 22:39
hsabir-xoreaxeax https://github.com/lenartlola 1665 27. September 2023 11:50
albaud https://github.com/Gymnopediese 710 13. Oktober 2023 12:34
Ardcord 880 22. Oktober 2023 11:09
Narmand 100 14. November 2023 17:20
Nochance 120 17. November 2023 18:00
MinjaeLee https://github.com/MinjeaLee 1945 26. September 2024 10:56
BenJ4368 160 15. November 2024 13:36
a8ymgi01w@mozmail.com 165 15. November 2024 13:36
chabrune 90 15. November 2024 13:43
UncleReaton https://unclereaton.dev 715 23. März 2025 00:18
ikkiw 1140 23. Mai 2025 13:45
  • Author : Danhia
  • Point reward : 55