The Experiment Setup Our test environment was configured for maximum network security, with both the server (SRV01) and the client (WIN11-01) explicitly set to support and require SMB signing. The Critical Finding Despite having SMB signing enforced on both endpoints, our packet capture yielded a critical, visible finding: the entire contents of the file, “SMB […]
We begin on the Domain Controller, where the Group Policy setting “Network security: Restrict NTLM: NTLM authentication in this domain” is initially set to Disabled. This allows NTLM-based authentication to proceed – opening the door for potential relay attacks. On the attacker machine (running Kali Linux), the Responder and Impacket’s ntlmrelayx tools are launched. Once […]
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