Type your comment> @returnz said:
To you and other peeps who face the same issue try this:
smbclient \\your ip\share -U ‘foo’ --socket-options=‘TCP_NODELAY IPTOS_LOWDELAY SO_KEEPALIVE SO_RCVBUF=131072 SO_SNDBUF=131072’ -t 40000
worked for me!
Many thanks! I spent hours trying to get some of those files. Thanks to you hint I got the user flag in a minute. Let’s go for root.
Update: after an almost sleepless night struggling with the root flag, I get the infamous incorrect flag message.
Grrrrrr 
new update: a reset did “fix” it.