SMB <tcp 445, 139>

netexec smb <IP> -u '' -p '' --shares

enum4linux <IP>

smbmap -H <IP>

smbclient -L "\\\\<IP>\\<share>" -U '' -N
smbclient -L "\\\\<IP>\\<share>" -U user%password
recurse on
prompt off
mget *

Faster download speeds

-t 120 --socket-options='TCP_NODELAY IPTOS_LOWDELAY SO_KEEPALIVE SO_RCVBUF=131072 SO_SNDBUF=131072'