SMB
...

 Blackfield smbclient -L \\\\10.10.10.192\\   
Password for [WORKGROUP\nakul]:

        Sharename       Type      Comment
        ---------       ----      -------
        ADMIN$          Disk      Remote Admin
        C$              Disk      Default share
        forensic        Disk      Forensic / Audit share.
        IPC$            IPC       Remote IPC
        NETLOGON        Disk      Logon server share 
        profiles$       Disk      
        SYSVOL          Disk      Logon server share 
Reconnecting with SMB1 for workgroup listing.

➜  Blackfield smbclient //10.10.10.192/profiles$                          
Password for [WORKGROUP\nakul]:                                                                    
Try "help" to get a list of possible commands.                                                     
smb: \> ls                                                                                         
  .                                   D        0  Wed Jun  3 22:17:12 2020
  ..                                  D        0  Wed Jun  3 22:17:12 2020
  AAlleni                             D        0  Wed Jun  3 22:17:11 2020
  ABarteski                           D        0  Wed Jun  3 22:17:11 2020
  ABekesz                             D        0  Wed Jun  3 22:17:11 2020
  ABenzies                            D        0  Wed Jun  3 22:17:11 2020
  ABiemiller                          D        0  Wed Jun  3 22:17:11 2020
...SNIP

lots of directory which looks like usernames.

I ll mount these directory on my system and then i can create a wordlists with these directory names.. these folders are empty inside

mount -t cifs //10.10.10.192/profiles$ /mnt/htb/Blackfield

ls -1 > user

ls -1 makes sure that every output is in a new line, i pip the output into a file 'user' which will work as a username wordlists.