We want to perform a known plaintext attack on the enigma M3, the goal is to reach the initial settings of the 3 rotors. I tried to bruteforce those values since I know the plaintext, ciphertext, positions of the rotors and the reflector setting, but I couldn't find the initial position of the 3 rotors. Is there any method/calculation to perform in order to make my life easier? the challenge is the following: $aaaaa: yugzy$ with the parameters:
- Position of the rotors: I, III, II
- Reflector setting: UKW-B
- Ring setting: A,A,A
I tried to use visualizers such as: https://www.101computing.net/enigma-machine-emulator/ but still, I wasn't successful to find the result.