Backdooring and Hijacking Azure AD Accounts by Abusing External Identities

External identities are a concept in Azure Active Directory which makes it possible to collaborate with users outside of an organization. These external users, often called guest users, can be granted permissions to certain resources and work together with users within the organization. The identities of these users are managed in a different Azure AD tenant, or are unmanaged accounts outside of Azure AD. This talk explains how these external identities work in Azure AD and how concepts such as B2B collaboration are facilitated...
By: Dirk-jan Mollema
Full Abstract & Presentation Materials: www.blackhat.c...