Hacking Azure: Entra ID Apps Discovery

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Greetings Hackers,

Welcome to the latest edition of the Hacker Associate Newsletter! We are thrilled to bring you updates and resources from our recent event [ Offensive Cloud Penetration Testing ]

Highlights:

In today's cloud-first environment, managing enterprise applications in Azure Active Directory (Azure AD) is crucial for maintaining security and organizational efficiency. This blog post explores recent findings from our application audit and demonstrates various methods to query and analyze Azure AD applications.

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Key Highlights

• Discovery of 6 distinct enterprise applications in the environment
• Multiple query methods demonstrated for application information retrieval
• Focus on security through anonymized application data
• Practical examples of Azure CLI commands for app management

Here’s what you can look forward to as we cover these topics:

1?? Application Inventory Overview

2?? Query Methodologies & Commands [ Entra ID App Discovery]

• Basic List Query:

• Specific Application Details
• Filtered Queries

3?? Best Practices Observed

4?? Technical Insights

5?? Security Considerations and Conclusion

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Detailed Analysis

1?? Application Inventory Overview

1. Application Inventory Overview Our initial scan revealed several key applications in our environment:

• SecureTeams Enterprise (formerly "Oragnization Teams.All")
• BackendProcessor (formerly "P2P Server")
• AutomationEngine Pro
• EnterpriseApp Manager
• SecurityTester
• DomainAnalytics Suite

2?? Query Methodologies & Commands [ Entra ID App Discovery]

2. Query Methodologies We demonstrated three distinct methods to retrieve application information:

a) Basic List Query:

This command provides a comprehensive overview of all applications in a table format.

az ad app list --query "[].{DisplayName:displayName, ObjectId:objectId, AppId:appId}" --output table        

b) Specific Application Details:

This method allows for detailed inspection of individual applications.

az ad app show --id [AppId] --query "{DisplayName:displayName, ObjectId:objectId, AppId:appId}"        

c) Filtered Queries:

These approaches demonstrate different filtering techniques for precise application discovery.

az ad app list --display-name "ApplicationName" az ad app list --filter "appId eq 'AppId'"        

Cheatsheet:

?  ~ az ad app list --query "[].{DisplayName:displayName, ObjectId:objectId, AppId:appId}" --output table
DisplayName                                                      AppId
---------------------------------------------------------------  ------------------------------------
Oragnization Teams.All                                         b4614d4f-dca6-4180-a8f7-

P2P Server                                                       6bd9de20-6713-481a-a2b1-
azure-automation22_214agX15LOq5LzDKFHAQOmTXy948MPkUXynvuFjk0Xk=  

MyAutomatedApp                                                   072b6d1b-2408-4766-9bec-

o365stealer                                                      0e47a678-5d7d-4194-a81e-

Azure Domain Analyzer                                            6114a818-dc22-4bd3-942b-


?  ~ az ad app show --id b4614d4f-dca6-4180-a8f7-fef26ce51d60 --query "{DisplayName:displayName, ObjectId:objectId, AppId:appId}"

{
  "AppId": "b4614d4f-dca6-4180-a8f7-fef26ce51d90",
  "DisplayName": "Oragnization Teams.All",
  "ObjectId": null
}

?  ~ az ad app list --display-name "Oragnization Teams.All" --query "[0].{DisplayName:displayName, ObjectId:id, AppId:appId}"


{
  "AppId": "b4614d4f-dca6-4180-a8f7-fef26ce51d9000",
  "DisplayName": "Oragnization Teams.All",
  "ObjectId": "17dbc33b-64c3-4846-8408-28ef807b5c"
}

?  ~ az ad app list --filter "appId eq 'b4614d4f-dca6-4180-a8f7-fef26ce9090'" --query "[0].{DisplayName:displayName, ObjectId:id, AppId:appId}"


{
  "AppId": "b4614d4f-dca6-4180-a8f7-fef26ce51d690900",
  "DisplayName": "Oragnization Teams.All",
  "ObjectId": "17dbc33b-64c3-4846-8408-28ef807b5c"
}        

3?? Best Practices Observed

1. Consistent Querying: Multiple query methods ensure data verification
2. Data Structure: Maintaining organized output formats (JSON/Table)
3. Information Security: Careful handling of sensitive application IDs
4. Systematic Approach: Progressive from broad listing to specific application details

4?? Technical Insights

• The queries consistently return three key pieces of information: DisplayName: Application's visible identifier ObjectId: Unique object identifier in Azure AD AppId: Application's unique identifier
• The JSON output format provides more detailed information while the table format offers better readability for quick scanning.

5?? Security Considerations

1. Application names have been anonymized for security purposes
2. Object IDs and Application IDs should be treated as sensitive information
3. Regular auditing of applications helps maintain security posture
4. Proper access controls should be implemented for application management

Conclusion

Understanding and effectively managing Azure AD applications is crucial for modern enterprise environments. The demonstrated query methods provide administrators with powerful tools for application discovery and management. Regular auditing using these techniques helps maintain security and compliance while ensuring efficient application lifecycle management.

Next Steps

• Regular application inventory reviews
• Implementation of naming conventions
• Periodic access review for all applications
• Documentation of application purposes and owners

This comprehensive approach to application management ensures better security, compliance, and operational efficiency in your Azure environment.

Final Thoughts

Cloud security is a critical aspect of modern cybersecurity. By understanding and applying the techniques discussed in this blog, professionals can enhance their skills and contribute to a safer digital environment. Whether you're a beginner or an experienced ethical hacker, the Azure hacking mindmap is a valuable resource for mastering cloud penetration testing.

Happy hacking!

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