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Abuse Open Redirect for Token Stealing and Hybrid Attacks

An overlooked open redirect can seed a convincing phishing chain. Steal tokens, abuse a function app and service principal, and pivot across a hybrid Active Directory and Azure environment.

Overview

An overlooked open redirect can seed a convincing phishing chain. In this lab you will steal tokens, abuse a function app and service principal, and pivot across a hybrid Active Directory and Azure environment.

Scenario

You are on a red team engagement against Mega Big Tech, which runs a hybrid identity estate spanning on-premises Active Directory and Azure. Show how a low-severity web flaw can lead to cross-environment compromise.

Lab prerequisites
  • Familiarity with the Windows and Linux command line
  • Familiarity with Azure and Active Directory
Learning outcomes
  • Abuse an open redirect to support a phishing attack
  • Steal and replay authentication tokens
  • Abuse an Azure Function App
  • Recover secrets protected with DPAPI
  • Abuse a service principal
  • Access data in Azure Storage Tables
  • Pivot across hybrid Active Directory and Azure
Real-world context

Open redirects are frequently dismissed as low risk, yet they make phishing links far more convincing. In hybrid environments, a stolen token can bridge on-premises and cloud identity in a single step.

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