Compass Security Blog

Offensive Defense

Introducing EntraFalcon – A Tool to Enumerate Entra ID Objects and Assignments

TL;DR: PowerShell tool to enumerate Entra ID objects, assignments and identify highly privileged objects or risky configurations. https://github.com/CompassSecurity/EntraFalcon Entra ID environments can contain thousands of objects – users, groups, service principals, and more – each with unique properties and complex relationships. While manual reviews through the Entra portal might be feasible in smaller environments, they […]

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Device Code Phishing – Add Your Own Sign-In Methods on Entra ID

TL;DR An attacker is able to register new security keys (FIDO) or other authentication methods (TOTP, Email, Phone etc.) after a successful device code phishing attack. This allows an attacker to backdoor the account (FIDO) or perform the self-service password reset for the account with the newly registered sign-in methods. Microsoft deemed this not a vulnerability.

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