CrackMapExec VS john

Let’s walk through a typical attack against the Administrator account using a popular tool, CrackMapExec.

Attackers like to use crackmapexec to exploit Windows networks and machines. It can achieve various goals like enumerating users, cracking SMB shares, and injecting shellcode into memory.

After gaining a local administrator NTLM password hash using SMB relay attacks, Redbot Security used the “CrackMapExec” tool to pass the local administrator hash to all systems and found multiple systems using the same password:

ntlmrelayx2proxychains aims to connect the tool of the SecureAuthCorps' impacket suite, ntlmrelayx.py (hereafter referred to as "ntlmrelayx"), along with @byt3bl33d3r's tool, CrackMapExec (hereafter referred to as "CME"), over proxychains, developped by haad.

CrackMapExec - Swiss army knife for pentesting networks.

Regarding network shares, I personally tend to use crackmapexec with a list of systems. It won't list the ACLs but it is very good at finding out what a standard domain user could access (if this is what you are after) https://github.com/byt3bl33d3r/CrackMapExec

John The Ripper

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Ok, both John the ripper, hashcat and other tools seem to support extracting the hash, or directly trying to discover the password.

With the root hash you can crack the root password using tools like John The Ripper[0]. More generally, I assume, this exploit can be used to read any arbitrary files on the system, bypassing regular access control, and plenty of other stuff you aren't supposed to be able to do as a non-privileged user.

0: https://www.openwall.com/john/

use (John the Ripper)[https://github.com/openwall/john] and (rockyou.txt)[https://github.com/rockyou.txt]

this actually seems to have been reported as a bug and fixed years ago but it is still affecting me on a version freshly downloaded from the AUR, is there a way around this or another program i can use?

John the Ripper

Since I used to work for the employer in question, I decide to crack my own password-protected pay statements. I downloaded and built John the Ripper jumbo and then all I had to do was run a few commands after looking at the documentation, and there was my SIN number almost instantly.

However, most credential brute forcing takes place offline against a leaked database from some site. A program like John the Ripper is used to try hashing each word in a dictionary until it matches the entries in the database. Because this all happens offline, there's no mechanism in place to delay the attempts or lock the user out.