To solve get the flag, you need to complete Task 1 followed by Task 2.
Decrypt the secret in Task 1 to get a key and hint for Task 2.

• Task 1
  • publicKey.pem
  • secret.enc
  • Storyline Task 1.pdf
• Task 2
  • Complete Storyline.pdf

You are given an RSA public key and an encoded secret message. Your task is to find a way to decode the message. The message will help with finding the flag in Task 2.

Some starters:

• Understand how RSA uses keys to encrypt and decrypt text, especially the math behind it!
• You can use Kali Linux to help you.
• Feel free to use online calculators and previous codes to help.
• https://cryptography.io/en/latest/hazmat/primitives/asymmetric/rsa/# might be helpful

Read the Storyline. Use the clues from Task 1's encoded secret and the storyline to get the flag.

Use Vigenere Cipher to solve the flag.
Ciphertext: (get clues from the text and hint from Task 1)
Key: (get from Task 1)
Flag: plaintext