Hi all, I'm trying to run samrdump.py, but i have some errors:

Code:
#samrdump.py 192.168.1.9

Trying protocol 445/SMB...
Protocol failed: SessionError: ('S', 'M', 'B', ' ', 'L', 'i', 'b', 'r', 'a', 'r', 'y', ' ', 'E', 'r', 'r', 'o', 'r'), class: ERRDOS, code: ERRnoaccess(Access denied.)
Trying protocol 139/SMB...
Protocol failed: SessionError: ('S', 'M', 'B', ' ', 'L', 'i', 'b', 'r', 'a', 'r', 'y', ' ', 'E', 'r', 'r', 'o', 'r'), class: ERRDOS, code: ERRnoaccess(Access denied.)
I'm sure that this machine has 139 and 445 ports open, nmap said:

139/tcp open netbios-ssn
445/tcp open microsoft-ds

Has anyone had the same problem?

Thank you very much.