john_pollard

Problem

Sometimes RSA certificates are breakable

Solution

  1. 2.
    Find the modulus value in the decoded certificate: Modulus: 4966306421059967 (0x11a4d45212b17f)
  2. 3.
    Use Yafu to factor into p and q: factor(0x11a4d45212b17f)

Flag

picoCTF{73176001,67867967}
Last modified 2yr ago