pfx2john administrator.pfx > pfx.hash john --wordlist=/usr/share/wordlists/rockyou.txt pfx.hash

Crack a PFX password or split it into PEM cert and key (for evil-winrm).

Command:

pfx2john administrator.pfx > pfx.hash
john --wordlist=/usr/share/wordlists/rockyou.txt pfx.hash

References:

https://github.com/openwall/john