Azure AD Seamless SSO allows enumerating tenant users

Azure AD Seamless SSO allows enumerating tenant users

In 2017, Oliver Morton introduced a feature he found in Office 365 Active Sync, allowing enumerating the existence of the users based on http status codes. (Update: The “feature” was fixed by Microsoft on mid November 2019). In this blog, I’ll introduce my similar findings on using Microsoft API to enumerate users when Seamless SSO is enabled in Azure AD tenant.

How to create a backdoor to Azure AD - part 1: Identity federation

How to create a backdoor to Azure AD - part 1: Identity federation

On November 2018 Azure AD MFA was down over 12 hours preventing users from logging in to Office 365. Same happened in October 2019 in US data centers. As MFA is usually mandatory for administrators by company policy, they couldn’t log in either. In this blog, I’ll show how to create a backdoor to Azure AD so you can log in and bypass MFA.

AADInternals published!

AADInternals published!

For the last couple months I’ve used most of my free time on studying and hacking Azure AD admin APIs. As a result, I’m finally publishing the first (beta) version of the AADInternals PowerShell module.