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PRT.ps1
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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 or Token Provider DLL to get the PRT token.
#>
[cmdletbinding()]
Param(
[Parameter(Mandatory=$False)]
[ValidateSet('BrowserCore','TokenProvider')]
[String]$Method="BrowserCore"
)
Process
{
# Get the nonce
$response = Invoke-RestMethod -UseBasicParsing -Method Post -Uri "https://login.microsoftonline.com/Common/oauth2/token" -Body "grant_type=srv_challenge"
$nonce = $response.Nonce
if($Method -eq "BrowserCore")
{
# 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 the last one
$tokens = $response.response.data
if($tokens.Count -gt 1)
{
return $tokens[$tokens.Count - 1]
}
else
{
return $tokens
}
}
else
{
$tokens = [AADInternals.Native]::getCookieInfoForUri("https://login.microsoftonline.com/common/oauth2/authorize?sso_nonce=$nonce")
if($tokens.Count)
{
Write-Verbose "Found $($tokens.Count) token(s)."
# Return the last one
$token = $tokens[$tokens.Count - 1]["data"]
return $token.Split(";")[0]
}
else
{
Throw "Error getting tokens."
}
}
}
}
# Creates a new PRT token
# Aug 26th 2020
function New-UserPRTToken
{
<#
.SYNOPSIS
Creates a new PRT JWT token.
.DESCRIPTION
Creates a new Primary Refresh Token (PRT) as JWT to be used to sign-in as the user.
.Parameter RefreshToken
Primary Refresh Token (PRT) or the user.
.Parameter SessionKey
The session key of the user
.Parameter Context
The context used = B64 encoded byte array (size 24)
.Parameter Settings
PSObject containing refresh_token and session_key attributes.
.Parameter Nonce
Nonce to be added to the token.
.Parameter GetNonce
Get nonce automatically by connecting to Azure AD.
.EXAMPLE
Get-AADIntAccessTokenForAADJoin -SaveToCache
PS C:\>Join-AADIntAzureAD -DeviceName "My computer" -DeviceType "Commodore" -OSVersion "C64"
Device successfully registered to Azure AD:
DisplayName: "My computer"
DeviceId: d03994c9-24f8-41ba-a156-1805998d6dc7
Cert thumbprint: 78CC77315A100089CF794EE49670552485DE3689
Cert file name : "d03994c9-24f8-41ba-a156-1805998d6dc7.pfx"
Local SID:
S-1-5-32-544
Additional SIDs:
S-1-12-1-797902961-1250002609-2090226073-616445738
S-1-12-1-3408697635-1121971140-3092833713-2344201430
S-1-12-1-2007802275-1256657308-2098244751-2635987013
PS C:\>$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,
[bool]$KdfV2 = $true
)
Process
{
if($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
# 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" = $iat
}
# Derive the key from session key and context
if($KdfV2)
{
$hdr["kdf_ver"] = 2
$derivedContext = Get-KDFv2Context -Context $ctx -Payload $pld
}
else
{
$derivedContext = $ctx
}
$key = Get-PRTDerivedKey -Context $derivedContext -SessionKey $sKey
# Fetch the nonce!
if($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"] = $Nonce
}
else
{
Write-Warning "No nonce provided so the token is invalid. Use -GetNonce switch or provide the nonce with -Nonce"
}
# As the payload may have changed due to nonce, derive the key again if needed
if($KdfV2)
{
$derivedContext = Get-KDFv2Context -Context $ctx -Payload $pld
$key = Get-PRTDerivedKey -Context $derivedContext -SessionKey $sKey
}
# 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
ObjectId: afdeac87-b32a-41a0-95ad-0a555a91f0a4
TenantId: 8aeb6b82-6cc7-4e33-becd-97566b330f5b
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
ObjectId: afdeac87-b32a-41a0-95ad-0a555a91f0a4
TenantId: 8aeb6b82-6cc7-4e33-becd-97566b330f5b
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
ObjectId: afdeac87-b32a-41a0-95ad-0a555a91f0a4
TenantId: 8aeb6b82-6cc7-4e33-becd-97566b330f5b
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]
# Parse certificate information
$oids = Parse-CertificateOIDs -Certificate $deviceCert
$deviceId = $oids.DeviceId.ToString()
$tenantId = $oids.TenantId.ToString()
$objectId = $oids.ObjectId.ToString()
# Write the device certificate to disk
Set-BinaryContent -Path "$deviceId.pfx" -Value $deviceCert.Export([System.Security.Cryptography.X509Certificates.X509ContentType]::Pfx)
# 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 " ObjectId: $objectId"
Write-Host " TenantId: $tenantId"
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 -DeviceName "mypc1.company.com"
Device P2P 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($Certificate)
{
$TenantId = (Parse-CertificateOIDs -Certificate $Certificate).TenantId
}
if(!$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)
# Store the private key to so that it can be exported
$cspParameters = [System.Security.Cryptography.CspParameters]::new()
$cspParameters.ProviderName = "Microsoft Enhanced RSA and AES Cryptographic Provider"
$cspParameters.ProviderType = 24
$cspParameters.KeyContainerName ="AADInternals"
# Set the private key
$privateKey = [System.Security.Cryptography.RSACryptoServiceProvider]::new(2048,$cspParameters)
$privateKey.ImportParameters($rsa.ExportParameters($true))
# 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"
"windows_api_version" = "1.0"
}
}
try
{
# 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
}
catch
{
$errorMessage = $_.ErrorDetails.Message | ConvertFrom-Json
Write-Error $errorMessage.error_description
return
}
# 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 = $P2PCert.Subject.Split(",")[0].Split("=")[1]
Set-BinaryContent -Path "$certName-P2P.pfx" -Value $P2PCert.Export([System.Security.Cryptography.X509Certificates.X509ContentType]::Pfx)
# 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 P2P 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
ObjectId: afdeac87-b32a-41a0-95ad-0a555a91f0a4
TenantId: 8aeb6b82-6cc7-4e33-becd-97566b330f5b
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-AADIntUserPRTKeys -PfxFileName .\d03994c9-24f8-41ba-a156-1805998d6dc7.pfx -Credentials $cred
PS C:\>$prttoken = New-AADIntUserPRTToken -Settings $prtkeys -GetNonce
.EXAMPLE
Get-AADIntAccessTokenForAADJoin -SaveToCache
PS C:\>Join-AADIntAzureAD -DeviceName "My computer" -DeviceType "Commodore" -OSVersion "C64"
Device successfully registered to Azure AD:
DisplayName: "My computer"
DeviceId: d03994c9-24f8-41ba-a156-1805998d6dc7
ObjectId: afdeac87-b32a-41a0-95ad-0a555a91f0a4
TenantId: 8aeb6b82-6cc7-4e33-becd-97566b330f5b
Cert thumbprint: 78CC77315A100089CF794EE49670552485DE3689
Cert file name : "d03994c9-24f8-41ba-a156-1805998d6dc7.pfx"
Local SID:
S-1-5-32-544
Additional SIDs:
S-1-12-1-797902961-1250002609-2090226073-616445738
S-1-12-1-3408697635-1121971140-3092833713-2344201430
S-1-12-1-2007802275-1256657308-2098244751-2635987013
PS C:\>Get-AADIntAccessTokenForIntuneMDM -SaveToCache
PS C:\>$prtKeys = Get-AADIntUserPRTKeys -PfxFileName .\d03994c9-24f8-41ba-a156-1805998d6dc7.pfx -UseRefreshToken
PS C:\>$prttoken = New-AADIntUserPRTToken -Settings $prtkeys -GetNonce
.EXAMPLE
Get-AADIntAccessTokenForAADJoin -SaveToCache
PS C:\>Join-AADIntAzureAD -DeviceName "My computer" -DeviceType "Commodore" -OSVersion "C64"
Device successfully registered to Azure AD:
DisplayName: "My computer"
DeviceId: d03994c9-24f8-41ba-a156-1805998d6dc7
ObjectId: afdeac87-b32a-41a0-95ad-0a555a91f0a4
TenantId: 8aeb6b82-6cc7-4e33-becd-97566b330f5b
Cert thumbprint: 78CC77315A100089CF794EE49670552485DE3689
Cert file name : "d03994c9-24f8-41ba-a156-1805998d6dc7.pfx"
Local SID:
S-1-5-32-544
Additional SIDs:
S-1-12-1-797902961-1250002609-2090226073-616445738
S-1-12-1-3408697635-1121971140-3092833713-2344201430
S-1-12-1-2007802275-1256657308-2098244751-2635987013
PS C:\>$saml = New-AADIntSAMLToken -ImmutableID "2Vt0xz0EgESz+vF+8BzxPw==" -Issuer "http://sts.company.com/adfs/services/trust" -PfxFileName .\ADFSSigningCertificate.pfx
PS C:\>$prtKeys = Get-AADIntUserPRTKeys -PfxFileName .\d03994c9-24f8-41ba-a156-1805998d6dc7.pfx -SAMLToken $saml
PS C:\>$prttoken = New-AADIntUserPRTToken -Settings $prtkeys -GetNonce
.Example
PS C\:>Export-AADIntLocalDeviceCertificate
Device certificate exported to f72ad27e-5833-48d3-b1d6-00b89c429b91.pfx
PS C\:>Export-AADIntLocalDeviceTransportKey
Transport key exported to f72ad27e-5833-48d3-b1d6-00b89c429b91_tk.pem
PS C:\>$creds = Get-Credential
PS C\:>$prtKeys = Get-AADIntUserPRTKeys -PfxFileName .\f72ad27e-5833-48d3-b1d6-00b89c429b91.pfx -TransportKeyFileName .\f72ad27e-5833-48d3-b1d6-00b89c429b91_tk.pem -Credentials $creds
PS C:\>$prttoken = New-AADIntUserPRTToken -Settings $prtkeys -GetNonce
.Example
PS C\:>Export-AADIntLocalDeviceCertificate
Device certificate exported to f72ad27e-5833-48d3-b1d6-00b89c429b91.pfx
PS C\:>Export-AADIntLocalDeviceTransportKey
Transport key exported to f72ad27e-5833-48d3-b1d6-00b89c429b91_tk.pem
PS C\:>$prtKeys = Get-AADIntUserPRTKeys -PfxFileName .\f72ad27e-5833-48d3-b1d6-00b89c429b91.pfx -TransportKeyFileName .\f72ad27e-5833-48d3-b1d6-00b89c429b91_tk.pem
PS C:\>$prttoken = New-AADIntUserPRTToken -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(Mandatory=$False)]
[string]$TransportKeyFileName,
[Parameter(ParameterSetName='RTFileAndPassword',Mandatory=$True)]
[Parameter(ParameterSetName='RTCertificate' ,Mandatory=$True)]
[switch]$UseRefreshToken,
[Parameter(Mandatory=$False)]
[String]$SAMLToken,
[Parameter(Mandatory=$False)]
[System.Management.Automation.PSCredential]$Credentials,
[Parameter(Mandatory=$False)]
[String]$OSVersion="10.0.18363.0"
)
Process
{
# Load the certificate if not provided
if(!$Certificate)
{
$Certificate = Load-Certificate -FileName $PfxFileName -Password $PfxPassword -Exportable
}