Web Exploitation - A Christmas Crisis

Task

  • no answer

  • What is the name of the cookie used for authentication?
    auth
    
  • In what format is the value of this cookie encoded?
    hexadecimal
    
  • Having decoded the cookie, what format is the data stored in?
    json
    
  • What is the value of Santa’s cookie?
    7b22636f6d70616e79223a22546865204265737420466573746976616c20436f6d70616e79222c2022757365726e616d65223a2273616e7461227d
    
  • What is the flag you’re given when the line is fully active?
    [redacted challenge flag]