The attached updates changes smb_login to detect if the newly discovered user is an administrator. It is based on code from Brandon McCann "zeknox" submitted in PR #1373, the associated changes, and the newer PR #2656.
The changes should correct a few issues with PR #1373 and #2656 and address Redmine bug #8773.
Specifically it:
- Fixes the admin detection code by using simple.disconnect(<share>) instead of disconnect()
- Adds support for detecting if the remote host will allow connects using any domain name when one of the new status codes is returned
- Dealt with the issue in PR #2656 where the username was prefixed with a '\'
Verification
Be connected to a database
Run this against a machine with a known user and admin user
See that the admin user is reported correctly
See that the non-admin user is reported correctly
Check the output of creds
Select a target that requires a domain in order to authenticate
In the stored credentials, with CHECK_ADMIN enabled, see that the domain name is, in fact, preserved in the reporting
To validate that the remote domain ignores domain value use the following command from a windows system:
net use \\<hostip>\admin$ /user:<random_value>\<username> <password>
When a Rex::Proto::SMB::Exceptions::InvalidWordCount exception is thrown by this module, it attempts to call the nonexistent method error_reason and throws a NoMethodError:
Auxiliary failed: NoMethodError undefined method `error_reason' for #<Rex::Proto::SMB::Exceptions::InvalidWordCount:0x007f48fcda0e48>
This changes uses the built in method get_error to return an error code.
[-] x.x.x.x:445 SMB - [1/1] - \\Domain - FAILED LOGIN (xxxxxxxx) xxxx : xxxxx [STATUS_WAIT_0]
I simply copied the check from ms08_0867_netapi.rb and put them in
a auxiliary check so I could scan for it. This was done because
Nmap's check is not safe and this is more stable.
[SeeRM:#1233] - This is an upgrade based on ringt's code in PR #2017.
As a pentester, it's useful to obtain additional information such as
device type, access rights, folders, and files, etc when doing a share
enumeration. I have also enhanced exception handling to avoid shutting
errors up, which is better for debugging purposes.
Tod Beardsley
jvazquez-r7
scriptjunkie
Tom Sellers
Zinterax
James Lee
William Vu
David Maloney
sho-luv
Royce Davis
sinn3r
Meatballs
Tab Assassin
Rich Lundeen
jvazquez-r7
Rob Fuller
sinn3r
Joshua J. Drake