During an internal penetration test you discover a legacy Windows Server 2012 host at 10.10.10.15 with TCP ports 139 and 445 open. To run enum.exe later, you first need to establish a NULL session that connects anonymously to the default Inter-Process Communication share. Which Windows command syntax will create this unauthenticated connection?
A NULL session is an unauthenticated SMB connection that uses the special IPC$ share. On Windows systems the command "net use" can be given an empty user name and password to create the session. Supplying an empty string as the password followed by /user:"" tells Windows to attempt the connection without credentials. Mapping the hidden administrative share (admin$) still requires valid credentials, while nbtstat merely queries the NetBIOS name table and does not open an SMB session. The smbclient example specifies the administrator account, so it is not a NULL session.
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What is a NULL session in SMB?
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What does the IPC$ share in Windows do?
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How does the 'net use' command work in this context?
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What is a NULL session in SMB?
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Why are ports 139 and 445 significant for SMB communication?
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How can the 'net use' command create a NULL session?
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