Get Azure AD Service Principal Metadata

Metadata

platform

Azure

contributors

Roberto Rodriguez @Cyb3rWard0g,MSTIC R&D

creation date

2021-08-05

modification date

2021-09-08

Tactics

TA0007

Techniques

T1087.004

Description

A threat actor might want to get metadata from Azure AD service principals via Microsoft Graph APIs and the right permissions.

Run Simulation

Get OAuth Access Token

from msal import PublicClientApplication
import requests
import time

function_app_url = "https://FUNCTION_APP_NAME.azurewebsites.net"

tenant_id = "TENANT_ID"
public_client_app_id = "KATANA_CLIENT_APP_ID"
server_app_id_uri = "api://" + tenant_id + "/cloudkatana"
scope = server_app_id_uri + "/user_impersonation"

app = PublicClientApplication(
    public_client_app_id,
    authority="https://login.microsoftonline.com/" + tenant_id
)
result = app.acquire_token_interactive(scopes=[scope])
bearer_token = result['access_token']

Set Azure Function Orchestrator

endpoint = function_app_url + "/api/orchestrators/Orchestrator"

Prepare HTTP Body

data = [{'RequestId': 'e39404dc-95b4-47b5-9be4-f6e2313ccf1f', 'name': 'Get Azure AD Service Principal Metadata', 'metadata': {'creationDate': '2021-08-05', 'modificationDate': '2021-09-08', 'description': 'A threat actor might want to get metadata from Azure AD service principals via Microsoft Graph APIs and the right permissions.\n', 'contributors': ['Roberto Rodriguez @Cyb3rWard0g', 'MSTIC R&D'], 'mitreAttack': [{'technique': 'T1087.004', 'tactics': ['TA0007']}]}, 'steps': [{'schema': 'atomic', 'id': '9373e945-1046-490a-8721-f7b61c500b9d', 'name': 'Get Azure AD Service Principal Metadata', 'metadata': {'creationDate': '2021-08-05', 'modificationDate': '2021-09-08', 'description': 'A threat actor might want to get metadata from Azure AD service principals via Microsoft Graph APIs and the right permissions.\n', 'contributors': ['Roberto Rodriguez @Cyb3rWard0g', 'MSTIC R&D'], 'mitreAttack': [{'technique': 'T1087.004', 'tactics': ['TA0007']}]}, 'authorization': [{'resource': 'https://graph.microsoft.com/', 'permissionsType': 'application', 'permissions': ['Application.Read.All']}], 'execution': {'type': 'ScriptModule', 'platform': 'Azure', 'executor': 'PowerShell', 'module': {'name': 'CloudKatanaAbilities', 'version': 1.0, 'function': 'Get-CKAzADServicePrincipal'}, 'parameters': {}}, 'number': 1}]}]

Send HTTP Request

http_headers = {'Authorization': 'Bearer ' + bearer_token, 'Accept': 'application/json','Content-Type': 'application/json'}
results = requests.get(endpoint, json=data, headers=http_headers, stream=False).json()

time.sleep(30)

Explore Output

query_status = requests.get(results['statusQueryGetUri'], headers=http_headers, stream=False).json()
query_results = query_status['output']
query_results