621 B
621 B
Vigenere XOR
Leonard forgot to tell you the key he used to encrypt his message.
Would you be able to recover the message he sent you ?
Flag format: dvCTF{[REDACTED]} found in the message
About the Challenge
We were given a file that contains encrypted message (You can download the file here)
How to Solve?
At first, I thought this is a binary but when I read the title I decided to decrypt the message using XOR decoder by dcode.fr. Use automatic bruteforce and then check the message that has been decrypted using 435239505430 key
dvCTF{80R3D_K3Y_15_K3Y_MY_FR13ND}