PRT.ps1
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# This file contains functions for Persistent Refresh Token and related device operations # Get the PRT token from the current user # Aug 19th 2020 function Get-UserPRTToken { <# .SYNOPSIS Gets user's PRT token from the Azure AD joined or Hybrid joined computer. .DESCRIPTION Gets user's PRT token from the Azure AD joined or Hybrid joined computer. Uses browsercore.exe to get the PRT token. #> [cmdletbinding()] Param() Process { # Get the nonce $response = Invoke-RestMethod -Method Post -Uri "https://login.microsoftonline.com/Common/oauth2/token" -Body "grant_type=srv_challenge" $nonce = $response.Nonce # There are two possible locations $locations = @( "$($env:ProgramFiles)\Windows Security\BrowserCore\browsercore.exe" "$($env:windir)\BrowserCore\browsercore.exe" ) # Check the locations foreach($file in $locations) { if(Test-Path $file) { $browserCore = $file } } if(!$browserCore) { throw "Browsercore not found!" } # Create the process $p = New-Object System.Diagnostics.Process $p.StartInfo.FileName = $browserCore $p.StartInfo.UseShellExecute = $false $p.StartInfo.RedirectStandardInput = $true $p.StartInfo.RedirectStandardOutput = $true $p.StartInfo.CreateNoWindow = $true # Create the message body $body = @" { "method":"GetCookies", "uri":"https://login.microsoftonline.com/common/oauth2/authorize?sso_nonce=$nonce", "sender":"https://login.microsoftonline.com" } "@ # Start the process $p.Start() | Out-Null $stdin = $p.StandardInput $stdout = $p.StandardOutput # Write the input $stdin.BaseStream.Write([bitconverter]::GetBytes($body.Length),0,4) $stdin.Write($body) $stdin.Close() # Read the output $response="" while(!$stdout.EndOfStream) { $response += $stdout.ReadLine() } Write-Debug "RESPONSE: $response" $p.WaitForExit() # Strip the stuff from the beginning of the line $response = $response.Substring($response.IndexOf("{")) | ConvertFrom-Json # Check for error if($response.status -eq "Fail") { Throw "Error getting PRT: $($response.code). $($response.description)" } # Return return $response.response.data } } # Creates a new PRT token # Aug 26th 2020 function New-UserPRTToken { <# .SYNOPSIS Creates a new PRT JWT token. .DESCRIPTION Creates a new Primary Refresh Token (PRT) as JWT to be used to sign-in as the user. .Parameter RefreshToken Primary Refresh Token (PRT) or the user. .Parameter SessionKey The session key of the user .Parameter Context The context used = B64 encoded byte array (size 24) .Parameter Settings PSObject containing refresh_token and session_key attributes. .Parameter Nonce Nonce to be added to the token. .Parameter GetNonce Get nonce automatically by connecting to Azure AD. .EXAMPLE Get-AADIntAccessTokenForAADJoin -SaveToCache PS C:\>Join-AADIntAzureAD -DeviceName "My computer" -DeviceType "Commodore" -OSVersion "C64" Device successfully registered to Azure AD: DisplayName: "My computer" DeviceId: d03994c9-24f8-41ba-a156-1805998d6dc7 Cert thumbprint: 78CC77315A100089CF794EE49670552485DE3689 Cert file name : "d03994c9-24f8-41ba-a156-1805998d6dc7.pfx" Local SID: S-1-5-32-544 Additional SIDs: S-1-12-1-797902961-1250002609-2090226073-616445738 S-1-12-1-3408697635-1121971140-3092833713-2344201430 S-1-12-1-2007802275-1256657308-2098244751-2635987013 PS C:\>$creds = Get-Credential PS C:\>$prtKeys = Get-UserAADIntPRTKeys -PfxFileName .\d03994c9-24f8-41ba-a156-1805998d6dc7.pfx -Credentials $cred PS C:\>$prtToken = New-AADIntUserPRTToken -RefreshToken $prtKeys.refresh_token -SessionKey $prtKeys.session_key -GetNonce PS C:\>$at = Get-AADIntAccessTokenForAADGraph -PRTToken $prtToken .EXAMPLE PS C:\>New-AADIntUserPRTToken -RefreshToken "AQABAAAAAAAGV_bv21oQQ4ROqh0_1-tAHenMcJD..." -SessionKey "O1g9LD9+jiE5yFulMcIeCPZrttzfEHyIPtF5X17cA5+=" eyJhbGciOiJIUzI1NiIsICJjdHgiOiJBQUFBQUFBQUFBQUF... .EXAMPLE PS C:\>New-AADIntUserPRTToken -Settings $prtKeys -GetNonce eyJhbGciOiJIUzI1NiIsICJjdHgiOiJBQUFBQUFBQUFBQUF... #> [cmdletbinding()] Param( [Parameter(ParameterSetName='TokenAndKey',Mandatory=$True)] [String]$RefreshToken, [Parameter(ParameterSetName='TokenAndKey',Mandatory=$True)] [String]$SessionKey, [Parameter(Mandatory=$False)] [String]$Context, [Parameter(Mandatory=$False)] [String]$Nonce, [Parameter(ParameterSetName='Settings',Mandatory=$True)] $Settings, [switch]$GetNonce ) Process { if($Settings) { if([string]::IsNullOrEmpty($Settings.refresh_token) -or [string]::IsNullOrEmpty($Settings.session_key)) { throw "refresh_token and/or session_key missing!" } $RefreshToken = $Settings.refresh_token $SessionKey = $Settings.session_key } if(!$Context) { # Create a random context $ctx = New-Object byte[] 24 ([System.Security.Cryptography.RandomNumberGenerator]::Create()).GetBytes($ctx) } else { $ctx = Convert-B64ToByteArray -B64 $Context } $sKey = Convert-B64ToByteArray -B64 $SessionKey $iat = [int]((Get-Date).ToUniversalTime() - $epoch).TotalSeconds # Derived the key from session key and context $key = Get-PRTDerivedKey -Context $ctx -SessionKey $sKey # Create the header and body $hdr = [ordered]@{ "alg" = "HS256" "typ" = "JWT" "ctx" = (Convert-ByteArrayToB64 -Bytes $ctx) } $pld = [ordered]@{ "refresh_token" = $RefreshToken "is_primary" = "true" "iat" = $iat } # Fetch the nonce! if($GetNonce) { # Create a temporary JWT and get the nonce (the Resource & ClientId can be anything) $jwt = New-JWT -Key $key -Header $hdr -Payload $pld $Nonce = Get-AccessTokenWithPRT -GetNonce -Cookie $jwt -Resource "I Love" -ClientId "Microsoft" } # If nonce is given (or fetched), use it! if($Nonce) { $pld["request_nonce"] = $Nonce } else { Write-Warning "No nonce provided so the token is invalid. Use -GetNonce switch or provide the nonce with -Nonce" } # Create the JWT $jwt = New-JWT -Key $key -Header $hdr -Payload $pld # Return return $jwt } } # Register the device to Azure AD # Aug 20th 2020 function Join-DeviceToAzureAD { <# .SYNOPSIS Emulates Azure AD Join or Azure AD Hybrid Join by registering the given device to Azure AD. .DESCRIPTION Emulates Azure AD Join or Azure AD Hybrid Join by registering the given device to Azure AD and generates a corresponding certificate. You may use any name, type or OS version you like. For Hybrid Join, the SID, tenant ID, and the certificate of the existing synced device must be provided - no access token needed. The generated certificate can be used to create a Primary Refresh Token and P2P certificates. The certificate has no password. .Parameter AccessToken The access token used to join the device. To get MFA claim to PRT, the access token needs to be get using MFA. If not given, will be prompted. .Parameter DeviceName The name of the device to be registered. .Parameter DeviceType The type of the device to be registered. Defaults to "Windows" .Parameter OSVersion The operating system version of the device to be registered. Defaults to "10.0.18363.0" .Parameter Certificate x509 device's user certificate. .Parameter PfxFileName File name of the .pfx device certificate. .Parameter PfxPassword The password of the .pfx device certificate. .Parameter DomainControllerName The fqdn of the domain controller from where the device information is "fetched". Defaults to "dc.aadinternals.com" .Parameter DomainName The domain name of the target Azure AD tenant. Defaults to "dc.aadinternals.com" .Parameter TenantId The tenant id of the target Azure AD tenant where the hybrid join device exists. .Parameter SID The SID of the device. Must be a valid SID and match the SID of the existing AAD device object. .Parameter JoinType The join type "Join" or "Register". Defaults to Join. .EXAMPLE Get-AADIntAccessTokenForAADJoin -SaveToCache PS\:>Join-AADIntDeviceToAzureAD -DeviceName "My computer" -DeviceType "Commodore" -OSVersion "C64" Device successfully registered to Azure AD: DisplayName: "My computer" DeviceId: d03994c9-24f8-41ba-a156-1805998d6dc7 Cert thumbprint: 78CC77315A100089CF794EE49670552485DE3689 Cert file name : "d03994c9-24f8-41ba-a156-1805998d6dc7.pfx" Local SID: S-1-5-32-544 Additional SIDs: S-1-12-1-797902961-1250002609-2090226073-616445738 S-1-12-1-3408697635-1121971140-3092833713-2344201430 S-1-12-1-2007802275-1256657308-2098244751-2635987013 .EXAMPLE Get-AADIntAccessTokenForAADJoin -SaveToCache PS\:>Join-AADIntDeviceToAzureAD -DeviceName "My computer" -DeviceType "Commodore" -OSVersion "C64" -JoinType Register Device successfully registered to Azure AD: DisplayName: "My computer" DeviceId: d03994c9-24f8-41ba-a156-1805998d6dc7 Cert thumbprint: 78CC77315A100089CF794EE49670552485DE3689 Cert file name : "d03994c9-24f8-41ba-a156-1805998d6dc7.pfx" Local SID: S-1-5-32-544 Additional SIDs: S-1-12-1-797902961-1250002609-2090226073-616445738 S-1-12-1-3408697635-1121971140-3092833713-2344201430 S-1-12-1-2007802275-1256657308-2098244751-2635987013 .EXAMPLE PS C\:>Join-AADIntDeviceToAzureAD -DeviceName "My computer" -SID "S-1-5-21-685966194-1071688910-211446493-3729" -PfxFileName .\f24f116f-6e80-425d-8236-09803da7dfbe-user.pfx -TenantId 40cb9912-555c-42b8-80e9-3b3ad50dda8a Device successfully registered to Azure AD: DisplayName: "My computer" DeviceId: f24f116f-6e80-425d-8236-09803da7dfbe Cert thumbprint: A531B73CFBAB2BA26694BA2AD31113211CC2174A Cert file name : "f24f116f-6e80-425d-8236-09803da7dfbe.pfx" #> [cmdletbinding()] Param( [Parameter(ParameterSetName="Hybrid", Mandatory=$True)] [String]$PfxFileName, [Parameter(ParameterSetName="Hybrid", Mandatory=$False)] [String]$PfxPassword, [Parameter(ParameterSetName="HybridCert", Mandatory=$True)] [Parameter(ParameterSetName="Hybrid", Mandatory=$True)] [String]$SID, [Parameter(ParameterSetName="HybridCert", Mandatory=$True)] [Parameter(ParameterSetName="Hybrid", Mandatory=$True)] [GUID]$TenantId, [Parameter(ParameterSetName="HybridCert", Mandatory=$False)] [Parameter(ParameterSetName="Hybrid", Mandatory=$False)] [Parameter(ParameterSetName="Normal", Mandatory=$False)] [String]$DomainName, [Parameter(ParameterSetName="HybridCert", Mandatory=$False)] [Parameter(ParameterSetName="Hybrid", Mandatory=$False)] [String]$DomainControllerName="dc.aadinternals.com", [Parameter(ParameterSetName="HybridCert", Mandatory=$True)] [System.Security.Cryptography.X509Certificates.X509Certificate2]$Certificate, [Parameter(ParameterSetName="Normal", Mandatory=$False)] [String]$AccessToken, [Parameter(ParameterSetName="Normal", Mandatory=$False)] [ValidateSet('Join','Register')] [String]$JoinType="Join", [Parameter(ParameterSetName="Normal", Mandatory=$True)] [Parameter(ParameterSetName="Hybrid", Mandatory=$True)] [Parameter(ParameterSetName="HybridCert", Mandatory=$True)] [String]$DeviceName, [Parameter(ParameterSetName="Normal", Mandatory=$False)] [Parameter(ParameterSetName="Hybrid", Mandatory=$False)] [Parameter(ParameterSetName="HybridCert", Mandatory=$False)] [String]$DeviceType="Windows", [Parameter(ParameterSetName="Normal", Mandatory=$False)] [Parameter(ParameterSetName="Hybrid", Mandatory=$False)] [Parameter(ParameterSetName="HybridCert", Mandatory=$False)] [String]$OSVersion="10.0.19041.804" ) Process { if(!$TenantId) { # Get from cache if not provided try { # Try first with access token retrieved with BPRT $AccessToken = Get-AccessTokenFromCache -AccessToken $AccessToken -ClientID "b90d5b8f-5503-4153-b545-b31cecfaece2" -Resource "urn:ms-drs:enterpriseregistration.windows.net" } catch { $AccessToken = Get-AccessTokenFromCache -AccessToken $AccessToken -ClientID "1b730954-1685-4b74-9bfd-dac224a7b894" -Resource "01cb2876-7ebd-4aa4-9cc9-d28bd4d359a9" } # Get the domain and tenant id $tenantId = (Read-Accesstoken -AccessToken $AccessToken).tid } # Load the Certificate for Hybrid Join if not provided if($PfxFileName) { $Certificate = Load-Certificate -FileName $PfxFileName -Password $PfxPassword -Exportable } # Register the Device $DeviceCertResponse = Register-DeviceToAzureAD -AccessToken $AccessToken -DeviceName $DeviceName -DeviceType $DeviceType -OSVersion $OSVersion -Certificate $Certificate -DomainController $DomainControllerName -SID $SID -TenantId $TenantId -DomainName $DomainName -RegisterOnly ($JoinType -eq "Register") if(!$DeviceCertResponse) { # Something went wrong :( return } [System.Security.Cryptography.X509Certificates.X509Certificate2]$deviceCert = $DeviceCertResponse[0] $regResponse = $DeviceCertResponse[1] # Write the device certificate to disk $deviceId = $deviceCert.Subject.Split("=")[1] $deviceCert.Export([System.Security.Cryptography.X509Certificates.X509ContentType]::Pfx) | Set-Content "$deviceId.pfx" -Encoding Byte # Remove the private key from the store Unload-PrivateKey -PrivateKey $deviceCert.PrivateKey Write-Host "Device successfully registered to Azure AD:" Write-Host " DisplayName: ""$DeviceName""" Write-Host " DeviceId: $deviceId" Write-Host " Cert thumbprint: $($regResponse.Certificate.Thumbprint)" Write-host " Cert file name : ""$deviceId.pfx""" foreach($change in $regResponse.MembershipChanges) { Write-Host "Local SID:" Write-Host " $($($change.LocalSID))" Write-Host "Additional SIDs:" foreach($sid in $change.AddSIDs) { Write-Host " $sid" } } } } # Generates a new P2P certificate # Aug 21st 2020 function New-P2PDeviceCertificate { <# .SYNOPSIS Creates a new P2P device or user certificate using the device certificate or PRT information. .DESCRIPTION Creates a new peer-to-peer (P2P) device or user certificate and exports it and the corresponding CA certificate. It can be used to enable RDP trust between devices of the same AAD tenant. .EXAMPLE Get-AADIntAccessTokenForAADJoin -SaveToCache PS\:>Join-AADIntAzureAD -DeviceName "My computer" -DeviceType "Commodore" -OSVersion "C64" .Parameter Certificate x509 certificate used to sign the certificate request. .Parameter PfxFileName File name of the .pfx certificate used to sign the certificate request. .Parameter PfxPassword The password of the .pfx certificate used to sign the certificate request. .Parameter TenantId The tenant id or name of users' tenant. .Parameter DeviceName The name of the device. Will be added to DNS Names attribute of the certificate. .Parameter OSVersion The operating system version of the device. Defaults to "10.0.18363.0" .Parameter RefreshToken Primary Refresh Token (PRT) or the user. .Parameter SessionKey The session key of the user .Parameter Context The context used = B64 encoded byte array (size 24) .Parameter Settings PSObject containing refresh_token and session_key attributes. .EXAMPLE PS C\:>New-AADIntP2PDeviceCertificate -PfxFileName .\d03994c9-24f8-41ba-a156-1805998d6dc7.pfx -TenantId 4169fee0-df47-4e31-b1d7-5d248222b872 -DeviceName "mypc1.company.com" Device certificate successfully created: Subject: "CN=d03994c9-24f8-41ba-a156-1805998d6dc7, DC=4169fee0-df47-4e31-b1d7-5d248222b872" DnsName: "mypc1.company.com" Issuer: "CN=MS-Organization-P2P-Access [2020]" Cert thumbprint: 84D7641F9BFA90767EA3456E443E21948FC425E5 Cert file name : "d03994c9-24f8-41ba-a156-1805998d6dc7-P2P.pfx" CA file name : "d03994c9-24f8-41ba-a156-1805998d6dc7-P2P-CA.der" .EXAMPLE Get-AADIntAccessTokenForAADJoin -SaveToCache PS C:\>Join-AADIntAzureAD -DeviceName "My computer" -DeviceType "Commodore" -OSVersion "C64" Device successfully registered to Azure AD: DisplayName: "My computer" DeviceId: d03994c9-24f8-41ba-a156-1805998d6dc7 Cert thumbprint: 78CC77315A100089CF794EE49670552485DE3689 Cert file name : "d03994c9-24f8-41ba-a156-1805998d6dc7.pfx" Local SID: S-1-5-32-544 Additional SIDs: S-1-12-1-797902961-1250002609-2090226073-616445738 S-1-12-1-3408697635-1121971140-3092833713-2344201430 S-1-12-1-2007802275-1256657308-2098244751-2635987013 PS C:\>$creds = Get-Credential PS C:\>$prtKeys = Get-UserAADIntPRTKeys -PfxFileName .\d03994c9-24f8-41ba-a156-1805998d6dc7.pfx -Credentials $cred PS C:\>New-AADIntP2PDeviceCertificate -RefreshToken $prtKeys.refresh_token -SessionKey $prtKeys.session_key User certificate successfully created: Subject: "CN=TestU@contoso.com, CN=S-1-12-1-xx-xx-xx-xx, DC=0f73eaa6-7fd6-48b8-8897-e382ba96daf4" Issuer: "CN=MS-Organization-P2P-Access [2020]" Cert thumbprint: A7F1D1F134569E0234E6AA722354D99C3AA68D0F Cert file name : "TestU@contoso.com-P2P.pfx" CA file name : "TestU@contoso.com-P2P-CA.der" #> [cmdletbinding()] Param( [Parameter(ParameterSetName='Certificate',Mandatory=$True)] [System.Security.Cryptography.X509Certificates.X509Certificate2]$Certificate, [Parameter(ParameterSetName='FileAndPassword',Mandatory=$True)] [string]$PfxFileName, [Parameter(ParameterSetName='FileAndPassword',Mandatory=$False)] [string]$PfxPassword, [Parameter(ParameterSetName='TokenAndKey',Mandatory=$True)] [String]$RefreshToken, [Parameter(ParameterSetName='TokenAndKey',Mandatory=$True)] [String]$SessionKey, [Parameter(Mandatory=$False)] [String]$Context, [Parameter(ParameterSetName='Settings',Mandatory=$True)] $Settings, [Parameter(ParameterSetName='FileAndPassword',Mandatory=$True)] [Parameter(ParameterSetName='Certificate',Mandatory=$True)] [String]$TenantId, [Parameter(ParameterSetName='FileAndPassword',Mandatory=$True)] [Parameter(ParameterSetName='Certificate',Mandatory=$True)] [String]$DeviceName, [Parameter(ParameterSetName='FileAndPassword',Mandatory=$False)] [Parameter(ParameterSetName='Certificate',Mandatory=$False)] [String]$OSVersion="10.0.18363.0", [Parameter(ParameterSetName='FileAndPassword',Mandatory=$False)] [Parameter(ParameterSetName='Certificate',Mandatory=$False)] [String[]]$DNSNames ) Process { if($Settings) { if([string]::IsNullOrEmpty($Settings.refresh_token) -or [string]::IsNullOrEmpty($Settings.session_key)) { throw "refresh_token and/or session_key missing!" } $RefreshToken = $Settings.refresh_token $SessionKey = $Settings.session_key } if($SessionKey -ne $null -and [string]::IsNullOrEmpty($Context)) { # Create a random context $ctx = New-Object byte[] 24 ([System.Security.Cryptography.RandomNumberGenerator]::Create()).GetBytes($ctx) } elseif($Context) { $ctx = Convert-B64ToByteArray -B64 $Context } if($Certificate -eq $null -and [string]::IsNullOrEmpty($PfxFileName) -eq $false) { $Certificate = Load-Certificate -FileName $PfxFileName -Password $PfxPassword -Exportable } if(!$DNSNames) { $DNSNames = @($DeviceName) } if(!$TenantId) { $TenantId = (Read-Accesstoken $prtKeys.id_token).tid } # Get the nonce $nonce = (Invoke-RestMethod -UseBasicParsing -Method Post -Uri "https://login.microsoftonline.com/$TenantId/oauth2/token" -Body "grant_type=srv_challenge").Nonce # We are doing this with the existing device certificate if($Certificate) { # Get the private key $privateKey = Load-PrivateKey -Certificate $Certificate # Initialize the Certificate Signing Request object $CN = $Certificate.Subject $req = [System.Security.Cryptography.X509Certificates.CertificateRequest]::new($CN, $privateKey, [System.Security.Cryptography.HashAlgorithmName]::SHA256,[System.Security.Cryptography.RSASignaturePadding]::Pkcs1) # Create the signing request $csr = [convert]::ToBase64String($req.CreateSigningRequest()) # B64 encode the public key $x5c = [convert]::ToBase64String(($certificate.Export([System.Security.Cryptography.X509Certificates.X509ContentType]::Cert))) # Create the header and body $hdr = [ordered]@{ "alg" = "RS256" "typ" = "JWT" "x5c" = "$x5c" } $pld = [ordered]@{ "client_id" = "38aa3b87-a06d-4817-b275-7a316988d93b" "request_nonce" = $nonce "win_ver" = $OSVersion "grant_type" = "device_auth" "cert_token_use" = "device_cert" "csr_type" = "http://schemas.microsoft.com/windows/pki/2009/01/enrollment#PKCS10" "csr" = $csr "netbios_name" = $DeviceName "dns_names" = $DNSNames } # Create the JWT $jwt = New-JWT -PrivateKey $privateKey -Header $hdr -Payload $pld # Construct the body $body = @{ "windows_api_version" = "2.0" "grant_type" = "urn:ietf:params:oauth:grant-type:jwt-bearer" "request" = "$jwt" } } else # We are doing this with the PRT keys information { # Create a private key and do something with it to get it stored $rsa=[System.Security.Cryptography.RSA]::Create(2048) # Initialize the Certificate Signing Request object $req = [System.Security.Cryptography.X509Certificates.CertificateRequest]::new("CN=", $rsa, [System.Security.Cryptography.HashAlgorithmName]::SHA256,[System.Security.Cryptography.RSASignaturePadding]::Pkcs1) # Create the signing request $csr = [convert]::ToBase64String($req.CreateSigningRequest()) # Create the header and body $hdr = [ordered]@{ "alg" = "HS256" "typ" = "JWT" "ctx" = (Convert-ByteArrayToB64 -Bytes $ctx) } $pld = [ordered]@{ "iss" = "aad:brokerplugin" "grant_type" = "refresh_token" "aud" = "login.microsoftonline.com" "request_nonce" = $nonce "scope" = "openid aza ugs" "refresh_token" = $RefreshToken "client_id" = "38aa3b87-a06d-4817-b275-7a316988d93b" "cert_token_use" = "user_cert" "csr_type" = "http://schemas.microsoft.com/windows/pki/2009/01/enrollment#PKCS10" "csr" = $csr } # Create the JWT $jwt = New-JWT -Key (Get-PRTDerivedKey -Context $ctx -SessionKey (Convert-B64ToByteArray $SessionKey)) -Header $hdr -Payload $pld # Construct the body $body = @{ "grant_type" = "urn:ietf:params:oauth:grant-type:jwt-bearer" "request" = "$jwt" } } # Make the request to get the P2P certificate $response = Invoke-RestMethod -UseBasicParsing -Method Post -Uri "https://login.microsoftonline.com/$tenantId/oauth2/token" -ContentType "application/x-www-form-urlencoded" -Body $body # Get the certificate $binCert = [byte[]](Convert-B64ToByteArray -B64 $response.x5c) # Create a new x509certificate $P2PCert = [System.Security.Cryptography.X509Certificates.X509Certificate2]::new($binCert,"",[System.Security.Cryptography.X509Certificates.X509KeyStorageFlags]::PersistKeySet -bor [System.Security.Cryptography.X509Certificates.X509KeyStorageFlags]::Exportable) $P2PCert.PrivateKey = $privateKey # Write the device P2P certificate to disk $certName = $P2PCert.Subject.Split(",")[0].Split("=")[1] $P2PCert.Export([System.Security.Cryptography.X509Certificates.X509ContentType]::Pfx) | Set-Content "$certName-P2P.pfx" -Encoding Byte # Write the P2P certificate CA to disk $CA = @" -----BEGIN PUBLIC KEY----- $($response.x5c_ca) -----END PUBLIC KEY----- "@ $CA | Set-Content "$certName-P2P-CA.der" if($Certificate) { # Unload the private key Unload-PrivateKey -PrivateKey $privateKey } # Print out information if($Certificate) { Write-Host "Device certificate successfully created:" } else { Write-Host "User certificate successfully created:" } Write-Host " Subject: ""$($P2PCert.Subject)""" if($Certificate) { Write-Host " DnsNames: ""$($P2PCert.DnsNameList.Unicode)""" } Write-Host " Issuer: ""$($P2PCert.Issuer)""" Write-Host " Cert thumbprint: $($P2PCert.Thumbprint)" Write-host " Cert file name : ""$certName-P2P.pfx""" Write-host " CA file name : ""$certName-P2P-CA.der""" } } # Generates a new set of PRT keys for the user. # Aug 21st 2020 function Get-UserPRTKeys { <# .SYNOPSIS Creates a new set of session key and refresh_token (PRT) for the user and saves them to json file. .DESCRIPTION Creates a new set of Primary Refresh Token (PRT) keys for the user, including a session key and a refresh_token (PRT). Keys are saved to a json file. .Parameter Certificate x509 certificate used to sign the certificate request. .Parameter PfxFileName File name of the .pfx certificate used to sign the certificate request. .Parameter PfxPassword The password of the .pfx certificate used to sign the certificate request. .Parameter Credentials Credentials of the user. .Parameter OSVersion The operating system version of the device. Defaults to "10.0.18363.0" .Parameter UseRefreshToken Uses cached refresh token instead of credentials. Use Get-AADIntAccessTokenForMDM with -SaveToCache switch. .Parameter SAMLToken Uses the provided SAML token instead of credentials. .EXAMPLE Get-AADIntAccessTokenForAADJoin -SaveToCache PS C:\>Join-AADIntAzureAD -DeviceName "My computer" -DeviceType "Commodore" -OSVersion "C64" Device successfully registered to Azure AD: DisplayName: "My computer" DeviceId: d03994c9-24f8-41ba-a156-1805998d6dc7 Cert thumbprint: 78CC77315A100089CF794EE49670552485DE3689 Cert file name : "d03994c9-24f8-41ba-a156-1805998d6dc7.pfx" Local SID: S-1-5-32-544 Additional SIDs: S-1-12-1-797902961-1250002609-2090226073-616445738 S-1-12-1-3408697635-1121971140-3092833713-2344201430 S-1-12-1-2007802275-1256657308-2098244751-2635987013 PS C:\>$creds = Get-Credential PS C:\>$prtKeys = Get-UserAADIntPRTKeys -PfxFileName .\d03994c9-24f8-41ba-a156-1805998d6dc7.pfx -Credentials $cred PS C:\>$prttoken = New-UserPRTToken -Settings $prtkeys -GetNonce .EXAMPLE Get-AADIntAccessTokenForAADJoin -SaveToCache PS C:\>Join-AADIntAzureAD -DeviceName "My computer" -DeviceType "Commodore" -OSVersion "C64" Device successfully registered to Azure AD: DisplayName: "My computer" DeviceId: d03994c9-24f8-41ba-a156-1805998d6dc7 Cert thumbprint: 78CC77315A100089CF794EE49670552485DE3689 Cert file name : "d03994c9-24f8-41ba-a156-1805998d6dc7.pfx" Local SID: S-1-5-32-544 Additional SIDs: S-1-12-1-797902961-1250002609-2090226073-616445738 S-1-12-1-3408697635-1121971140-3092833713-2344201430 S-1-12-1-2007802275-1256657308-2098244751-2635987013 PS C:\>Get-AADIntAccessTokenForIntuneMDM -SaveToCache PS C:\>$prtKeys = Get-UserAADIntPRTKeys -PfxFileName .\d03994c9-24f8-41ba-a156-1805998d6dc7.pfx -UseRefreshToken PS C:\>$prttoken = New-UserPRTToken -Settings $prtkeys -GetNonce .EXAMPLE Get-AADIntAccessTokenForAADJoin -SaveToCache PS C:\>Join-AADIntAzureAD -DeviceName "My computer" -DeviceType "Commodore" -OSVersion "C64" Device successfully registered to Azure AD: DisplayName: "My computer" DeviceId: d03994c9-24f8-41ba-a156-1805998d6dc7 Cert thumbprint: 78CC77315A100089CF794EE49670552485DE3689 Cert file name : "d03994c9-24f8-41ba-a156-1805998d6dc7.pfx" Local SID: S-1-5-32-544 Additional SIDs: S-1-12-1-797902961-1250002609-2090226073-616445738 S-1-12-1-3408697635-1121971140-3092833713-2344201430 S-1-12-1-2007802275-1256657308-2098244751-2635987013 PS C:\>$saml = New-AADIntSAMLToken -ImmutableID "2Vt0xz0EgESz+vF+8BzxPw==" -Issuer "http://sts.company.com/adfs/services/trust" -PfxFileName .\ADFSSigningCertificate.pfx PS C:\>$prtKeys = Get-UserAADIntPRTKeys -PfxFileName .\d03994c9-24f8-41ba-a156-1805998d6dc7.pfx -SAMLToken $saml PS C:\>$prttoken = New-UserPRTToken -Settings $prtkeys -GetNonce #> [cmdletbinding()] Param( [Parameter(ParameterSetName='Certificate',Mandatory=$True)] [Parameter(ParameterSetName='RTCertificate',Mandatory=$True)] [System.Security.Cryptography.X509Certificates.X509Certificate2]$Certificate, [Parameter(ParameterSetName='FileAndPassword',Mandatory=$True)] [Parameter(ParameterSetName='RTFileAndPassword',Mandatory=$True)] [string]$PfxFileName, [Parameter(ParameterSetName='FileAndPassword',Mandatory=$False)] [Parameter(ParameterSetName='RTFileAndPassword',Mandatory=$False)] [string]$PfxPassword, [Parameter(ParameterSetName='RTFileAndPassword',Mandatory=$True)] [Parameter(ParameterSetName='RTCertificate',Mandatory=$True)] [switch]$UseRefreshToken, [Parameter(Mandatory=$False)] [String]$SAMLToken, [Parameter(Mandatory=$False)] [String]$TenantId, [Parameter(Mandatory=$False)] [System.Management.Automation.PSCredential]$Credentials, [Parameter(Mandatory=$False)] [String]$OSVersion="10.0.18363.0" ) Process { if(!$SAMLToken -and !$Credentials -and !$UseRefreshToken) { throw "Credentials or SAMLToken must be provided or the -UseRefreshToken switch used!" } if(!$Certificate) { $Certificate = Load-Certificate -FileName $PfxFileName -Password $PfxPassword -Exportable } # Get the private key $privateKey = Load-PrivateKey -Certificate $Certificate # B64 encode the public key $x5c = [convert]::ToBase64String(($certificate.Export([System.Security.Cryptography.X509Certificates.X509ContentType]::Cert))) # TenantId if(!$TenantId) { if($Credentials) { $TenantId = Get-TenantID -Domain $Credentials.UserName.Split("@")[1] } else { $TenantId = "Common" } } $body = "grant_type=srv_challenge" # Get the nonce $response = Invoke-RestMethod -UseBasicParsing -Method Post -Uri "https://login.microsoftonline.com/$tenantId/oauth2/token" -Body $body $nonce = $response.Nonce Remove-Variable body # Construct the header $header = Convert-ByteArrayToB64 -Bytes ([text.encoding]::UTF8.GetBytes("{""alg"":""RS256"", ""typ"":""JWT"", ""x5c"":""$($x5c.Replace("/","\/"))""}")) -NoPadding # Construct the payload $payloadObj=@{ "client_id" = "38aa3b87-a06d-4817-b275-7a316988d93b" "request_nonce" = "$nonce" "scope" ="openid aza ugs" "win_ver" = "$OSVersion" } if($SAMLToken) { $payloadObj["grant_type"] = "urn:ietf:params:oauth:grant-type:saml1_1-bearer" $payloadObj["assertion"] = Convert-TextToB64 -Text $SAMLToken } elseif($Credentials) { $payloadObj["grant_type"] = "password" $payloadObj["username"] = $Credentials.UserName $payloadObj["password"] = $Credentials.GetNetworkCredential().Password } elseif($UseRefreshToken) { # Trying to get the refresh token from the cache $refresh_token = $script:refresh_tokens["29d9ed98-a469-4536-ade2-f981bc1d605e-https://graph.windows.net"] if([string]::IsNullOrEmpty($refresh_token)) { Throw "No refresh token found! Use Get-AADIntAccessTokenForIntuneMDM with -SaveToCache switch and try again." } $tokens = Get-AccessTokenWithRefreshToken -RefreshToken $refresh_token -Resource "1b730954-1685-4b74-9bfd-dac224a7b894" -ClientId "29d9ed98-a469-4536-ade2-f981bc1d605e" -TenantId Common -IncludeRefreshToken $true $payloadObj["grant_type"] = "refresh_token" $payloadObj["refresh_token"] = $tokens[1] $payloadObj["client_id"] = "29d9ed98-a469-4536-ade2-f981bc1d605e" } $payload = Convert-ByteArrayToB64 -Bytes ([text.encoding]::UTF8.GetBytes( ($payloadObj | ConvertTo-Json -Compress ).Replace("/","\/") )) -NoPadding # Construct the JWT data to be signed $dataBin = [text.encoding]::UTF8.GetBytes(("{0}.{1}" -f $header,$payload)) # Get the signature $sigBin = Sign-JWT -PrivateKey $PrivateKey -Data $dataBin $sigB64 = Convert-ByteArrayToB64 $sigBin -UrlEncode -NoPadding # B64 URL encode $signature = $sigB64 # Construct the JWT $jwt = "{0}.{1}.{2}" -f $header,$payload,$signature # Construct the body $body = @{ "windows_api_version" = "2.0" "grant_type" = "urn:ietf:params:oauth:grant-type:jwt-bearer" "request" = "$jwt" "client_info" = "1" } # Make the request $response = Invoke-RestMethod -UseBasicParsing -Method Post -Uri "https://login.microsoftonline.com/$TenantId/oauth2/token" -ContentType "application/x-www-form-urlencoded" -Body $body -ErrorAction SilentlyContinue if(!$response.token_type) { throw "Error getting session key. Check your credentials!" } # Decrypt the session key and add it to return value try { $sessionKey = Decrypt-PRTSessionKey -JWE $response.session_key_jwe -PrivateKey $privateKey $response | Add-Member -NotePropertyName "session_key" -NotePropertyValue (Convert-ByteArrayToB64 -Bytes $sessionKey) } catch { Write-Error $($_.Exception.Message) } # Write to file $outFileName = "$($Certificate.Subject.Split("=")[1]).json" $response | ConvertTo-Json |Set-Content $outFileName -Encoding UTF8 Write-Host "Keys saved to $outFileName" # Unload the private key Unload-PrivateKey -PrivateKey $privateKey # Return $response } } # Removes the device from Azure AD # Sep 2nd 2020 function Remove-DeviceFromAzureAD { <# .SYNOPSIS Removes the device from Azure AD. .DESCRIPTION Removes the device from Azure AD using the given device certificate. .Parameter Certificate x509 certificate used to sign the certificate request. .Parameter PfxFileName File name of the .pfx certificate used to sign the certificate request. .Parameter PfxPassword The password of the .pfx certificate used to sign the certificate request. .Parameter Force Does not ask for "Are your sure?" questions. .EXAMPLE Remove-AADIntDeviceFromAzureAD -pfxFileName .\85c3252a-3b33-41cf-bd4f-c53b7a94c548.pfx The device 85c3252a-3b33-41cf-bd4f-c53b7a94c548 succesfully removed from Azure AD. Attestation result KeyId: 0372f9ab-6103-4a0f-9095-9b49cd399479 #> [cmdletbinding()] Param( [Parameter(ParameterSetName='Certificate',Mandatory=$True)] [System.Security.Cryptography.X509Certificates.X509Certificate2]$Certificate, [Parameter(ParameterSetName='FileAndPassword',Mandatory=$True)] [string]$PfxFileName, [Parameter(ParameterSetName='FileAndPassword',Mandatory=$False)] [string]$PfxPassword, [switch]$Force ) Process { if(!$Certificate) { $Certificate = Load-Certificate -FileName $PfxFileName -Password $PfxPassword -Exportable } $deviceID = $Certificate.Subject.Split("=")[1] if(!$Force) { $promptValue = Read-Host "Are you sure you wan't to remove the device $deviceID? from Azure AD? Type YES to continue or CTRL+C to abort" if($promptValue -ne "yes") { Write-Warning "Device removal of device $deviceID cancelled." return } } Write-Verbose "Unenrolling device $deviceID" $requestId = (New-Guid).ToString() $headers=@{ "User-Agent" = "Dsreg/10.0 (Windows 10.0.18363.0)" "ocp-adrs-client-name" = "Dsreg" "ocp-adrs-client-version" = "10.0.18362.0" "client-Request-Id" = $requestId "return-client-request-id" = "true" } try { $response = Invoke-WebRequest -UseBasicParsing -Certificate $Certificate -Method Delete -Uri "https://enterpriseregistration.windows.net/EnrollmentServer/device/$($deviceID)?api-version=1.0" -Headers $headers -ErrorAction SilentlyContinue } catch { Write-Error ($_.ErrorDetails.Message | ConvertFrom-Json ).Message return } $keyId = ($response.Content | ConvertFrom-Json).AttestationResult.KeyId Write-Host "The device $deviceID succesfully removed from Azure AD. Attestation result KeyId: $keyId" } } # Get device compliance # Sep 11th 2020 function Get-DeviceRegAuthMethods { <# .SYNOPSIS Get's the authentication methods used while registering the device. .DESCRIPTION Get's the authentication methods used while registering the device. .Parameter AccessToken The access token used to get the methos. .Parameter DeviceId Azure AD device id of the device. .Parameter ObjectId Azure AD object id of the device. .EXAMPLE Get-AADIntAccessTokenForAADGraph -SaveToCache PS C\:>Get-AADIntDeviceRegAuthMethods -DeviceId "d03994c9-24f8-41ba-a156-1805998d6dc7" pwd mfa #> [cmdletbinding()] Param( [Parameter(Mandatory=$False)] [String]$AccessToken, [Parameter(ParameterSetName='DeviceID',Mandatory=$True)] [String]$DeviceId, [Parameter(ParameterSetName='ObjectID',Mandatory=$True)] [String]$ObjectId ) Process { # Get from cache if not provided $AccessToken = Get-AccessTokenFromCache -AccessToken $AccessToken -ClientID "1b730954-1685-4b74-9bfd-dac224a7b894" -Resource "https://graph.windows.net" $parsedToken = Read-Accesstoken -AccessToken $AccessToken $tenantId = $parsedToken.tid $headers=@{ "Authorization" = "Bearer $AccessToken" "Accept" = "application/json;odata=nometadata" } # Get the object Id if not given if([string]::IsNullOrEmpty($ObjectId)) { $ObjectId = Get-DeviceObjectId -DeviceId $DeviceId -TenantId $tenantId -AccessToken $AccessToken } # Get the methods $response = Invoke-RestMethod -UseBasicParsing -Method Get -Uri "https://graph.windows.net/$tenantId/devices/$ObjectId`?`$select=deviceSystemMetadata&api-version=1.61-internal" -Headers $headers $methods = $response.deviceSystemMetadata | Where-Object key -eq RegistrationAuthMethods | Select-Object -ExpandProperty value | ConvertFrom-Json return $methods } } # Set device compliance # Sep 11th 2020 function Set-DeviceRegAuthMethods { <# .SYNOPSIS Set's the authentication methods. .DESCRIPTION Set's the authentication methods. Affects what authentication claims the access tokens generated with device certificate or PRT. .Parameter AccessToken The access token used to set the methods. .Parameter DeviceId Azure AD device id of the device. .Parameter ObjectId Azure AD object id of the device. .Parameter Methods The list of methods. Can be any of "pwd","rsa","otp","fed","wia","mfa","mngcmfa","wiaormfa","none" but only pwd and mfa matters. .EXAMPLE Get-AADIntAccessTokenForAADGraph -SaveToCache PS C\:>Set-AADIntDeviceRegAuthMethods -DeviceId "d03994c9-24f8-41ba-a156-1805998d6dc7" -Methods mfa,pwd pwd mfa #> [cmdletbinding()] Param( [Parameter(Mandatory=$False)] [String]$AccessToken, [Parameter(ParameterSetName='DeviceID',Mandatory=$True)] [String]$DeviceId, [Parameter(ParameterSetName='ObjectID',Mandatory=$True)] [String]$ObjectId, [Validateset("pwd","rsa","otp","fed","wia","mfa","mngcmfa","wiaormfa","none")] [Parameter(Mandatory=$False)] [String[]]$Methods="none" ) Process { # Get from cache if not provided $AccessToken = Get-AccessTokenFromCache -AccessToken $AccessToken -ClientID "1b730954-1685-4b74-9bfd-dac224a7b894" -Resource "https://graph.windows.net" $parsedToken = Read-Accesstoken -AccessToken $AccessToken $tenantId = $parsedToken.tid $headers=@{ "Authorization" = "Bearer $AccessToken" "Accept" = "application/json;odata=nometadata" } # Get the object Id if not given if([string]::IsNullOrEmpty($ObjectId)) { $ObjectId = Get-DeviceObjectId -DeviceId $DeviceId -TenantId $tenantId -AccessToken $AccessToken } # Get the current methods $response = Invoke-RestMethod -UseBasicParsing -Method Get -Uri "https://graph.windows.net/$tenantId/devices/$ObjectId`?`$select=deviceSystemMetadata&api-version=1.61-internal" -Headers $headers # Change the methods and convert to JSON $newMethods = $Methods | ConvertTo-Json -Compress $currentMethods = $response.deviceSystemMetadata | Where-Object key -eq RegistrationAuthMethods $currentMethods.value = $newMethods # Post the changes to Azure AD Invoke-RestMethod -UseBasicParsing -Method Patch -Uri "https://graph.windows.net/$tenantId/devices/$ObjectId`?api-version=1.61-internal" -Headers $headers -Body ($response|ConvertTo-Json) -ContentType "application/json" Get-DeviceRegAuthMethods -AccessToken $AccessToken -ObjectId $ObjectId } } # Get device transport key public key # Sep 13th 2020 function Get-DeviceTransportKey { <# .SYNOPSIS Get's the public key of transport key of the device. .DESCRIPTION Get's the public key of transport key of the device. .Parameter AccessToken The access token used to get the certificate. .Parameter DeviceId Azure AD device id of the device. .Parameter ObjectId Azure AD object id of the device. .EXAMPLE Get-AADIntAccessTokenForAADGraph -SaveToCache PS C\:>Get-AADIntDeviceTransportKey -DeviceId "d03994c9-24f8-41ba-a156-1805998d6dc7" #> [cmdletbinding()] Param( [Parameter(Mandatory=$False)] [String]$AccessToken, [Parameter(ParameterSetName='DeviceID',Mandatory=$True)] [String]$DeviceId, [Parameter(ParameterSetName='ObjectID',Mandatory=$True)] [String]$ObjectId ) Process { # Get from cache if not provided $AccessToken = Get-AccessTokenFromCache -AccessToken $AccessToken -ClientID "1b730954-1685-4b74-9bfd-dac224a7b894" -Resource "https://graph.windows.net" $parsedToken = Read-Accesstoken -AccessToken $AccessToken $tenantId = $parsedToken.tid $headers=@{ "Authorization" = "Bearer $AccessToken" "Accept" = "application/json;odata=nometadata" } # Get the object Id if not given if([string]::IsNullOrEmpty($ObjectId)) { $ObjectId = Get-DeviceObjectId -DeviceId $DeviceId -TenantId $tenantId -AccessToken $AccessToken } # Get the key information $response = Invoke-RestMethod -UseBasicParsing -Method Get -Uri "https://graph.windows.net/$tenantId/devices/$ObjectId`?`$select=deviceId,deviceKey,alternativeSecurityIds,objectId&api-version=1.61-internal" -Headers $headers $DeviceId = $response.deviceId if($response.alternativeSecurityIds -and $response.alternativeSecurityIds.key -and $response.deviceKey) { Write-Verbose "Current key material: $(Convert-B64ToText -B64 $response.deviceKey[0].keyMaterial)" # Get the certificate thumbprint and SHA1 $keyInfo = ([text.encoding]::Unicode.GetString( [byte[]](Convert-B64ToByteArray -B64 $response.alternativeSecurityIds.key)) ).split(">")[1] $thumbPrint = $keyInfo.Substring(0,40) $SHA256 = $keyInfo.Substring(41) # Should be SHA1 (https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-dvre/1f2ebba7-7783-42c4-982a-ce9ca76af949) $rawKeyMaterial = Convert-B64ToByteArray -B64 $response.deviceKey[0].keyMaterial # Check whether this the raw RSABLOB if( (Compare-Object -ReferenceObject ([text.encoding]::ASCII.GetBytes("RSA1")) -DifferenceObject $rawKeyMaterial[0..3]) -eq $null) { $parsedKey = Parse-KeyBLOB -Key $rawKeyMaterial $keyMaterial = @{ "kid" = "" "alg" = "RS256" "kty" = "RSA" "e" = Convert-ByteArrayToB64 -Bytes $parsedKey.Exponent "n" = Convert-ByteArrayToB64 -Bytes $parsedKey.Modulus } } else { $keyMaterial = [text.encoding]::UTF8.getString($rawKeyMaterial) | ConvertFrom-Json } # Export the TKPUB $export = @{ "keyMaterial" = $keyMaterial "thumpPrint" = $thumbPrint "hash" = $SHA256 } $export | ConvertTo-Json | Set-Content "$DeviceId-TKPUB.json" -Encoding UTF8 # Print out information Write-Host "Device TKPUB key successfully exported:" Write-Host " Device ID: $deviceId" Write-Host " Cert thumbprint: $($thumbPrint.toLower())" Write-Host " Cert SHA256: $SHA256" Write-host " Public key file name : ""$DeviceId-TKPUB.json""" } else { Write-Error "Could not get TKPUB for device $DeviceId" } } } # Set device transport key public key # Sep 24th 2020 function Set-DeviceTransportKey { <# .SYNOPSIS Set's the public key of transport key of the device. .DESCRIPTION Set's the public key of transport key of the device. .Parameter AccessToken The access token used to get the certificate. .Parameter DeviceId Azure AD device id of the device. .Parameter ObjectId Azure AD object id of the device. .Parameter Certificate A X509 certificate to be used to set the TKPUB. .Parameter PfxFileName The full path to .pfx file from where to load the certificate .Parameter PfxPassword The password of the .pfx file .Parameter JsonFile The full path to .json file containing TKPUB information exported using Get-AADIntDeviceTransportKey .Parameter UseBuiltInCertificate Uses the internal any.sts certificate .EXAMPLE Get-AADIntAccessTokenForAADGraph -SaveToCache PS C\:>Set-AADIntDeviceTransportKey -DeviceId "d03994c9-24f8-41ba-a156-1805998d6dc7" -UseBuiltInCertificate #> [cmdletbinding()] Param( [Parameter(Mandatory=$False)] [String]$AccessToken, [Parameter(Mandatory=$False)] [String]$DeviceId, [Parameter(Mandatory=$False)] [String]$ObjectId, [Parameter(ParameterSetName='UseAnySTS',Mandatory=$True)] [switch]$UseBuiltInCertificate, [Parameter(ParameterSetName='Certificate',Mandatory=$True)] [System.Security.Cryptography.X509Certificates.X509Certificate2]$Certificate, [Parameter(ParameterSetName='FileAndPassword',Mandatory=$True)] [string]$PfxFileName, [Parameter(ParameterSetName='FileAndPassword',Mandatory=$False)] [string]$PfxPassword, [Parameter(ParameterSetName='JSON',Mandatory=$True)] [string]$JsonFileName ) Process { if([string]::IsNullOrEmpty($ObjectId) -and [string]::IsNullOrEmpty($DeviceId)) { Write-Error "ObjectId or DeviceId required!" return } # Get from cache if not provided $AccessToken = Get-AccessTokenFromCache -AccessToken $AccessToken -ClientID "1b730954-1685-4b74-9bfd-dac224a7b894" -Resource "https://graph.windows.net" if($JsonFileName) # JSON file { $json = Get-Content $JsonFileName -Encoding UTF8 | ConvertFrom-Json $hash = $json.hash $thumpPrint = $json.thumpPrint $keyMaterial = $json.keyMaterial } else { if($UseBuiltInCertificate) # Do we use built-in certificate (any.sts) { [System.Security.Cryptography.X509Certificates.X509Certificate2]$Certificate = Load-Certificate -FileName "$PSScriptRoot\any_sts.pfx" -Password "" } elseif($Certificate -eq $null) # Load the certificate { [System.Security.Cryptography.X509Certificates.X509Certificate2]$Certificate = Load-Certificate -FileName $PfxFileName -Password $PfxPassword } # Create a SHA256 object and calculate hash $sha256 = [System.Security.Cryptography.SHA256]::Create() $certHash = $sha256.ComputeHash($Certificate.GetPublicKey()) $hash = $(Convert-ByteArrayToB64 -Bytes $certHash) # Get the parameters from the certificate and create key material $parameters = $Certificate.PublicKey.Key.ExportParameters($false) $keyMaterial = @{ "kty" = "RSA" "n" = Convert-ByteArrayToB64 -Bytes $parameters.Modulus "e" = Convert-ByteArrayToB64 -Bytes $parameters.Exponent "alg" = "RS256" "kid" = (New-Guid).ToString() } $thumpPrint = $Certificate.Thumbprint } Write-Verbose "New key material $(($keyMaterial | ConvertTo-Json -Compress))" $kMat = Convert-ByteArrayToB64 -Bytes ([text.encoding]::UTF8.getBytes( ($keyMaterial | ConvertTo-Json -Compress) )) $parsedToken = Read-Accesstoken -AccessToken $AccessToken $tenantId = $parsedToken.tid $headers=@{ "Authorization" = "Bearer $AccessToken" "Accept" = "application/json;odata=nometadata" } # Get the object Id if not given if([string]::IsNullOrEmpty($ObjectId)) { $ObjectId = Get-DeviceObjectId -DeviceId $DeviceId -TenantId $tenantId -AccessToken $AccessToken } # Get the current key information $response = Invoke-RestMethod -UseBasicParsing -Method Get -Uri "https://graph.windows.net/$tenantId/devices/$ObjectId`?`$select=deviceKey,alternativeSecurityIds&api-version=1.61-internal" -Headers $headers Write-Verbose "Current key material: $(Convert-B64ToText -B64 $response.deviceKey[0].keyMaterial)" if([String]::IsNullOrEmpty($response)) { Write-Error "The device $DeviceId has no deviceKey, unable to change." return } # Set the new key $response.deviceKey[0].keyMaterial = $kMat # Set also the alternative security id to match the key. # The documentation states that the hash should be SHA1 https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-dvre/1f2ebba7-7783-42c4-982a-ce9ca76af949 # but the length equals SHA256 so we are using that instead. $key = "X509:<SHA1-TP-PUBKEY>$thumpPrint$hash" $key = Convert-ByteArrayToB64 -Bytes ([text.encoding]::Unicode.GetBytes($key)) $response.alternativeSecurityIds[0].key = $key Invoke-RestMethod -UseBasicParsing -Method Patch -Uri "https://graph.windows.net/$tenantId/devices/$ObjectId`?api-version=1.61-internal" -Headers $headers -Body ($response | ConvertTo-Json) -ContentType "application/json" } } # Creates a new BPRT # Oct 20th 2020 function New-BulkPRTToken { <# .SYNOPSIS Creates a new BPRT (Bulk AAD PRT Token) .DESCRIPTION Creates a new BPRT (Bulk AAD PRT Token) for registering multiple devices to AAD. Adds a corresponding user to Azure AD with UPN "package_<guid>@<default domain>". The Display Name of the user can be defined. .Parameter AccessToken Access token to create the BPRT .Parameter Expires The date when the BPRT expires. Maximum is 180 days. .Parameter Name The display name of the user to be created. Defaults to "package_<guid>". The upn will always be "package_<guid>@<default domain>". .Parameter PackageId Package Id of the previously created BPRT. Overwrites the existing user object and creates a new BPRT. If not found, a new one is created. .EXAMPLE Get-AADIntAccessTokenForAADGraph -Resource -Resource urn:ms-drs:enterpriseregistration.windows.net -SaveToCache PS C:\> New-AADIntBulkPRTToken -Name "My BPRT user" BPRT saved to package_8eb8b873-2b6a-4d55-bd96-27b0abadec6a-BPRT.json #> [cmdletbinding()] Param( [Parameter(Mandatory=$False)] [String]$AccessToken, [Parameter(Mandatory=$False)] [DateTime]$Expires=(Get-Date).AddMonths(1), [Parameter(Mandatory=$False)] [ValidateLength(1, 256)] [String]$Name, [Parameter(Mandatory=$False)] [guid]$PackageId=(New-Guid), [switch]$Force ) Process { # Get from cache if not provided $AccessToken = Get-AccessTokenFromCache -AccessToken $AccessToken -ClientId "1b730954-1685-4b74-9bfd-dac224a7b894" -Resource "urn:ms-drs:enterpriseregistration.windows.net" -Force $Force $headers = @{ "Authorization" = "Bearer $AccessToken" } if([string]::IsNullOrEmpty($Name)) { $Name = "package_$($PackageId.ToString())" } $body = @{ "pid" = $PackageId.ToString() "name" = $Name "exp" = $Expires.ToString("MM/dd/yyyy") } # Make the first request to get flowToken $response = Invoke-RestMethod -UseBasicParsing -Method Post -Uri "https://login.microsoftonline.com/webapp/bulkaadjtoken/begin" -Headers $headers -Body ($body | ConvertTo-Json) -ContentType "application/json; charset=utf-8" if($response.state -like "*Error*") { $resultData = $response.resultData | ConvertFrom-Json throw $resultData.error_description } # Get the BPRT $response = Invoke-RestMethod -UseBasicParsing -Method Get -Uri "https://login.microsoftonline.com/webapp/bulkaadjtoken/poll?flowToken=$($response.flowToken)" -Headers $headers $details = $response.resultData | ConvertFrom-Json # Check for the errors if($details.error_description) { if($details.error -eq "unauthorized_client") { Write-Warning "Got unauthorized_client error. Please try again." } throw $details.error_description } $parsedIdToken = Read-Accesstoken -AccessToken $details.id_token $userName = $parsedIdToken.upn Write-Verbose "BPRT successfully created. Id = $guid. User name: $userName" # Write to file $outFileName = "$($userName.Split("@")[0])-BPRT.json" $details | ConvertTo-Json |Set-Content $outFileName -Encoding UTF8 Write-Host "BPRT saved to $outFileName`n" return $details.refresh_token } } |