Null Sessions
Guest vs Null session on Windows
If you have been doing internal assessments on Active Directory infrastructure you may have heard the following words: “Null session”, “Guest session” and “Anonymous session”. These words describe techniques that can be used on Windows servers to connect to resources and obtain information about a computer or Active Directory objects such as users or SMB shares you have access on. Even if these techniques are well known I realised that people, including myself, didn’t understand them completely. This got me wanting to better understand it, hence this blogpost :)!
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