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AccessToken_utils.ps1
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AccessToken_utils.ps1
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# This script contains functions for handling access tokens
# and some utility functions
# VARIABLES
# Unix epoch time (1.1.1970)
$epoch = Get-Date -Day 1 -Month 1 -Year 1970 -Hour 0 -Minute 0 -Second 0 -Millisecond 0
# Well known client ids
<#
"graph_api"= "1b730954-1685-4b74-9bfd-dac224a7b894" # MS Graph API
"aadrm"= "90f610bf-206d-4950-b61d-37fa6fd1b224" # AADRM
"exo"= "a0c73c16-a7e3-4564-9a95-2bdf47383716" # EXO Remote PowerShell
"skype"= "d924a533-3729-4708-b3e8-1d2445af35e3" # Skype
"www"= "00000006-0000-0ff1-ce00-000000000000" # Office portal
"o365spo"= "00000003-0000-0ff1-ce00-000000000000" # SharePoint Online
"o365exo"= "00000002-0000-0ff1-ce00-000000000000" # Exchange Online
"dynamicscrm"= "00000007-0000-0000-c000-000000000000" # Dynamics CRM
"o365suiteux"= "4345a7b9-9a63-4910-a426-35363201d503" # O365 Suite UX
"aadsync"= "cb1056e2-e479-49de-ae31-7812af012ed8" # Azure AD Sync
"aadconnectv2"= "6eb59a73-39b2-4c23-a70f-e2e3ce8965b1" # AAD Connect v2
"synccli"= "1651564e-7ce4-4d99-88be-0a65050d8dc3" # Sync client
"azureadmin" = "c44b4083-3bb0-49c1-b47d-974e53cbdf3c" # Azure Admin web ui
"pta" = "cb1056e2-e479-49de-ae31-7812af012ed8" # Pass-through authentication
"patnerdashboard" = "4990cffe-04e8-4e8b-808a-1175604b879" # Partner dashboard (missing on letter?)
"webshellsuite" = "89bee1f7-5e6e-4d8a-9f3d-ecd601259da7" # Office365 Shell WCSS-Client
"teams" = "1fec8e78-bce4-4aaf-ab1b-5451cc387264" # Teams
"office" = "d3590ed6-52b3-4102-aeff-aad2292ab01c" # Office, ref. https://docs.microsoft.com/en-us/office/dev/add-ins/develop/register-sso-add-in-aad-v2
"office_online2" = "57fb890c-0dab-4253-a5e0-7188c88b2bb4" # SharePoint Online Client
"office_online" = "bc59ab01-8403-45c6-8796-ac3ef710b3e3" # Outlook Online Add-in App
"powerbi_contentpack" = "2a0c3efa-ba54-4e55-bdc0-770f9e39e9ee" # PowerBI content pack
"aad_account" = "0000000c-0000-0000-c000-000000000000" # https://account.activedirectory.windowsazure.com
"sara" = "d3590ed6-52b3-4102-aeff-aad2292ab01c" # Microsoft Support and Recovery Assistant (SARA)
"office_mgmt" = "389b1b32-b5d5-43b2-bddc-84ce938d6737" # Office Management API Editor https://manage.office.com
"onedrive" = "ab9b8c07-8f02-4f72-87fa-80105867a763" # OneDrive Sync Engine
"adibizaux" = "74658136-14ec-4630-ad9b-26e160ff0fc6" # Azure portal UI "ADIbizaUX"
"msmamservice" = "27922004-5251-4030-b22d-91ecd9a37ea4" # MS MAM Service API
"teamswebclient" = "5e3ce6c0-2b1f-4285-8d4b-75ee78787346" # Teams web client
"azuregraphclientint" = "7492bca1-9461-4d94-8eb8-c17896c61205" # Microsoft Azure Graph Client Library 2.1.9 Internal
"azure_mgmt" = "84070985-06ea-473d-82fe-eb82b4011c9d" # Windows Azure Service Management API
"az" = "1950a258-227b-4e31-a9cf-717495945fc2" # AZ PowerShell Module
"f8d98a96-0999-43f5-8af3-69971c7bb423" # Apple Internet Accounts
"7f59a773-2eaf-429c-a059-50fc5bb28b44" # https://docs.microsoft.com/en-us/rest/api/authorization/globaladministrator/elevateaccess#code-try-0
"9bc3ab49-b65d-410a-85ad-de819febfddc" # SPO Management Shell
"06c6433f-4fb8-4670-b2cd-408938296b8e" # AAD Pin redemption client
"19db86c3-b2b9-44cc-b339-36da233a3be2" # https://mysignins.microsoft.com
"00b41c95-dab0-4487-9791-b9d2c32c80f2" # Office 365 Management (mobile app)
"29d9ed98-a469-4536-ade2-f981bc1d605e" # Microsoft Authentication Broker (Azure MDM client)
"6f7e0f60-9401-4f5b-98e2-cf15bd5fd5e3" # Microsoft.AAD.BrokerPlugin resource:https://cs.dds.microsoft.com
"38aa3b87-a06d-4817-b275–7a316988d93b" # Microsoft AAD Cloud AP
"0c1307d4-29d6-4389-a11c-5cbe7f65d7fa" # Azure Android App
"6c7e8096-f593-4d72-807f-a5f86dcc9c77" # Intune MAM client resource:https://intunemam.microsoftonline.com
"4813382a-8fa7-425e-ab75-3b753aab3abb" # Authenticator App resource:ff9ebd75-fe62-434a-a6ce-b3f0a8592eaf
"1fec8e78-bce4-4aaf-ab1b-5451cc387264" # Teams client
"de0853a1-ab20-47bd-990b-71ad5077ac7b" # Windows Configuration Designer (WCD)
"b90d5b8f-5503-4153-b545-b31cecfaece2" # AADJ CSP
"fb78d390-0c51-40cd-8e17-fdbfab77341b" # Microsoft Exchange REST API Based Powershell
"18ed3507-a475-4ccb-b669-d66bc9f2a36e" # Microsoft_AAD_RegisteredApps
"3f1abb3f-12cc-42c3-ad06-5b608dc5fb67" # Microsoft Intune multi-tenant management UX extension
"810dcf14-1858-4bf2-8134-4c369fa3235b" # Azure AD Identity Governance - Entitlement Management
#>
# AccessToken resource strings
<#
$resources=@{
"aad_graph_api"= "https://graph.windows.net"
"ms_graph_api"= "https://graph.microsoft.com"
"azure_mgmt_api" = "https://management.azure.com"
"windows_net_mgmt_api" = "https://management.core.windows.net/"
"cloudwebappproxy" = "https://proxy.cloudwebappproxy.net/registerapp"
"officeapps" = "https://officeapps.live.com"
"outlook" = "https://outlook.office365.com"
"webshellsuite" = "https://webshell.suite.office.com"
"sara" = "https://api.diagnostics.office.com"
"office_mgmt" = "https://manage.office.com"
"msmamservice" = "https://msmamservice.api.application"
"spacesapi" = "https://api.spaces.skype.com"
}
#>
# Stored tokens (access & refresh)
$tokens=@{}
$refresh_tokens=@{}
## UTILITY FUNCTIONS FOR API COMMUNICATIONS
# Return user's login information
function Get-LoginInformation
{
<#
.SYNOPSIS
Returns authentication information of the given user or domain
.DESCRIPTION
Returns authentication of the given user or domain
.Example
Get-AADIntLoginInformation -Domain outlook.com
Tenant Banner Logo :
Authentication Url : https://login.live.com/login.srf?username=nn%40outlook.com&wa=wsignin1.0&wtrealm=urn%3afederation%3aMicrosoftOnline&wctx=
Pref Credential : 6
Federation Protocol : WSTrust
Throttle Status : 0
Cloud Instance : microsoftonline.com
Federation Brand Name : MSA Realms
Domain Name : live.com
Federation Metadata Url : https://nexus.passport.com/FederationMetadata/2007-06/FederationMetadata.xml
Tenant Banner Illustration :
Consumer Domain : True
State : 3
Federation Active Authentication Url : https://login.live.com/rst2.srf
User State : 2
Account Type : Federated
Tenant Locale :
Domain Type : 2
Exists : 5
Has Password : True
Cloud Instance audience urn : urn:federation:MicrosoftOnline
Federation Global Version : -1
.Example
Get-AADIntLoginInformation -UserName [email protected]
Tenant Banner Logo : https://secure.aadcdn.microsoftonline-p.com/c1c6b6c8-okmfqodscgr7krbq5-p48zooi4b7m9g2zcpryoikta/logintenantbranding/0/bannerlogo?ts=635912486993671038
Authentication Url :
Pref Credential : 1
Federation Protocol :
Throttle Status : 1
Cloud Instance : microsoftonline.com
Federation Brand Name : Company Ltd
Domain Name : company.com
Federation Metadata Url :
Tenant Banner Illustration :
Consumer Domain :
State : 4
Federation Active Authentication Url :
User State : 1
Account Type : Managed
Tenant Locale : 0
Domain Type : 3
Exists : 0
Has Password : True
Cloud Instance audience urn : urn:federation:MicrosoftOnline
Desktop Sso Enabled : True
Federation Global Version :
#>
[cmdletbinding()]
Param(
[Parameter(ParameterSetName='Domain',Mandatory=$True)]
[String]$Domain,
[Parameter(ParameterSetName='User',Mandatory=$True)]
[String]$UserName
)
Process
{
if([string]::IsNullOrEmpty($UserName))
{
$isDomain = $true
$UserName = "nn@$Domain"
}
# Gather login information using different APIs
$realm1=Get-UserRealm -UserName $UserName # common/userrealm API 1.0
$realm2=Get-UserRealmExtended -UserName $UserName # common/userrealm API 2.0
$realm3=Get-UserRealmV2 -UserName $UserName # GetUserRealm.srf (used in the old Office 365 login experience)
$realm4=Get-CredentialType -UserName $UserName # common/GetCredentialType (used in the "new" Office 365 login experience)
# Create a return object
$attributes = @{
"Account Type" = $realm1.account_type # Managed or federated
"Domain Name" = $realm1.domain_name
"Cloud Instance" = $realm1.cloud_instance_name
"Cloud Instance audience urn" = $realm1.cloud_audience_urn
"Federation Brand Name" = $realm2.FederationBrandName
"Tenant Locale" = $realm2.TenantBrandingInfo.Locale
"Tenant Banner Logo" = $realm2.TenantBrandingInfo.BannerLogo
"Tenant Banner Illustration" = $realm2.TenantBrandingInfo.Illustration
"State" = $realm3.State
"User State" = $realm3.UserState
"Exists" = $realm4.IfExistsResult
"Throttle Status" = $realm4.ThrottleStatus
"Pref Credential" = $realm4.Credentials.PrefCredential
"Has Password" = $realm4.Credentials.HasPassword
"Domain Type" = $realm4.EstsProperties.DomainType
"Federation Protocol" = $realm1.federation_protocol
"Federation Metadata Url" = $realm1.federation_metadata_url
"Federation Active Authentication Url" = $realm1.federation_active_auth_url
"Authentication Url" = $realm2.AuthUrl
"Consumer Domain" = $realm2.ConsumerDomain
"Federation Global Version" = $realm3.FederationGlobalVersion
"Desktop Sso Enabled" = $realm4.EstsProperties.DesktopSsoEnabled
}
# Return
return New-Object psobject -Property $attributes
}
}
# Return user's authentication realm from common/userrealm using API 1.0
function Get-UserRealm
{
<#
.SYNOPSIS
Returns authentication realm of the given user
.DESCRIPTION
Returns authentication realm of the given user using common/userrealm API 1.0
.Example
Get-AADIntUserRealm -UserName "[email protected]"
ver : 1.0
account_type : Managed
domain_name : company.com
cloud_instance_name : microsoftonline.com
cloud_audience_urn : urn:federation:MicrosoftOnline
.Example
Get-AADIntUserRealm -UserName "[email protected]"
ver : 1.0
account_type : Federated
domain_name : company.com
federation_protocol : WSTrust
federation_metadata_url : https://sts.company.com/adfs/services/trust/mex
federation_active_auth_url : https://sts.company.com/adfs/services/trust/2005/usernamemixed
cloud_instance_name : microsoftonline.com
cloud_audience_urn : urn:federation:MicrosoftOnline
#>
[cmdletbinding()]
Param(
[Parameter(Mandatory=$True)]
[String]$UserName
)
Process
{
# Call the API
$userRealm=Invoke-RestMethod -UseBasicParsing -Uri ("https://login.microsoftonline.com/common/userrealm/$UserName"+"?api-version=1.0")
# Verbose
Write-Verbose "USER REALM $($userRealm | Out-String)"
# Return
$userRealm
}
}
# Return user's authentication realm from common/userrealm using API 2.0
function Get-UserRealmExtended
{
<#
.SYNOPSIS
Returns authentication realm of the given user
.DESCRIPTION
Returns authentication realm of the given user using common/userrealm API 2.0
.Example
Get-AADIntUserRealmExtended -UserName "[email protected]"
NameSpaceType : Managed
Login : [email protected]
DomainName : company.com
FederationBrandName : Company Ltd
TenantBrandingInfo : {@{Locale=0; BannerLogo=https://secure.aadcdn.microsoftonline-p.com/xxx/logintenantbranding/0/bannerlogo?
ts=111; TileLogo=https://secure.aadcdn.microsoftonline-p.com/xxx/logintenantbranding/0/til
elogo?ts=112; BackgroundColor=#FFFFFF; BoilerPlateText=From here
you can sign-in to Company Ltd services; [email protected];
KeepMeSignedInDisabled=False}}
cloud_instance_name : microsoftonline.com
.Example
Get-AADIntUserRealmExtended -UserName "[email protected]"
NameSpaceType : Federated
federation_protocol : WSTrust
Login : [email protected]
AuthURL : https://sts.company.com/adfs/ls/?username=user%40company.com&wa=wsignin1.
0&wtrealm=urn%3afederation%3aMicrosoftOnline&wctx=
DomainName : company.com
FederationBrandName : Company Ltd
TenantBrandingInfo :
cloud_instance_name : microsoftonline.com
#>
[cmdletbinding()]
Param(
[Parameter(Mandatory=$True)]
[String]$UserName
)
Process
{
# Call the API
$userRealm=Invoke-RestMethod -UseBasicParsing -Uri ("https://login.microsoftonline.com/common/userrealm/$UserName"+"?api-version=2.0")
# Verbose
Write-Verbose "USER REALM $($userRealm | Out-String)"
# Return
$userRealm
}
}
# Return user's authentication realm from GetUserRealm.srf (used in the old Office 365 login experience)
function Get-UserRealmV2
{
<#
.SYNOPSIS
Returns authentication realm of the given user
.DESCRIPTION
Returns authentication realm of the given user using GetUserRealm.srf (used in the old Office 365 login experience)
.Example
Get-AADIntUserRealmV3 -UserName "[email protected]"
State : 4
UserState : 1
Login : [email protected]
NameSpaceType : Managed
DomainName : company.com
FederationBrandName : Company Ltd
CloudInstanceName : microsoftonline.com
.Example
Get-AADIntUserRealmV2 -UserName "[email protected]"
State : 3
UserState : 2
Login : [email protected]
NameSpaceType : Federated
DomainName : company.com
FederationGlobalVersion : -1
AuthURL : https://sts.company.com/adfs/ls/?username=user%40company.com&wa=wsignin1.
0&wtrealm=urn%3afederation%3aMicrosoftOnline&wctx=
FederationBrandName : Company Ltd
CloudInstanceName : microsoftonline.com
#>
[cmdletbinding()]
Param(
[Parameter(Mandatory=$True)]
[String]$UserName
)
Process
{
# Call the API
$userRealm=Invoke-RestMethod -UseBasicParsing -Uri ("https://login.microsoftonline.com/GetUserRealm.srf?login=$UserName")
# Verbose
Write-Verbose "USER REALM: $($userRealm | Out-String)"
# Return
$userRealm
}
}
# Return user's authentication type information from common/GetCredentialType
function Get-CredentialType
{
<#
.SYNOPSIS
Returns authentication information of the given user
.DESCRIPTION
Returns authentication of the given user using common/GetCredentialType (used in the "new" Office 365 login experience)
.Example
Get-AADIntUserRealmExtended -UserName "[email protected]"
Username : [email protected]
Display : [email protected]
IfExistsResult : 0
ThrottleStatus : 1
Credentials : @{PrefCredential=1; HasPassword=True; RemoteNgcParams=; FidoParams=; SasParams=}
EstsProperties : @{UserTenantBranding=System.Object[]; DomainType=3}
FlowToken :
apiCanary : AQABAAA..A
NameSpaceType : Managed
Login : [email protected]
DomainName : company.com
FederationBrandName : Company Ltd
TenantBrandingInfo : {@{Locale=0; BannerLogo=https://secure.aadcdn.microsoftonline-p.com/xxx/logintenantbranding/0/bannerlogo?
ts=111; TileLogo=https://secure.aadcdn.microsoftonline-p.com/xxx/logintenantbranding/0/til
elogo?ts=112; BackgroundColor=#FFFFFF; BoilerPlateText=From here
you can sign-in to Company Ltd services; [email protected];
KeepMeSignedInDisabled=False}}
cloud_instance_name : microsoftonline.com
.Example
Get-AADIntUserRealmExtended -UserName "[email protected]"
Username : [email protected]
Display : [email protected]
IfExistsResult : 0
ThrottleStatus : 1
Credentials : @{PrefCredential=4; HasPassword=True; RemoteNgcParams=; FidoParams=; SasParams=; FederationRed
irectUrl=https://sts.company.com/adfs/ls/?username=user%40company.com&wa=wsignin1.0&wtreal
m=urn%3afederation%3aMicrosoftOnline&wctx=}
EstsProperties : @{UserTenantBranding=; DomainType=4}
FlowToken :
apiCanary : AQABAAA..A
#>
[cmdletbinding()]
Param(
[Parameter(Mandatory=$True)]
[String]$UserName,
[Parameter(Mandatory=$False)]
[String]$FlowToken
)
Process
{
# Create a body for REST API request
$body = @{
"username"=$UserName
"isOtherIdpSupported"="true"
"checkPhones"="true"
"isRemoteNGCSupported"="false"
"isCookieBannerShown"="false"
"isFidoSupported"="false"
"originalRequest"=""
"flowToken"=$FlowToken
}
# Call the API
$userRealm=Invoke-RestMethod -UseBasicParsing -Uri ("https://login.microsoftonline.com/common/GetCredentialType") -ContentType "application/json; charset=UTF-8" -Method POST -Body ($body|ConvertTo-Json)
# Verbose
Write-Verbose "CREDENTIAL TYPE: $($userRealm | Out-String)"
# Return
$userRealm
}
}
# Return OpenID configuration for the domain
# Mar 21 2019
function Get-OpenIDConfiguration
{
<#
.SYNOPSIS
Returns OpenID configuration of the given domain or user
.DESCRIPTION
Returns OpenID configuration of the given domain or user
.Example
Get-AADIntOpenIDConfiguration -UserName "[email protected]"
.Example
Get-AADIntOpenIDConfiguration -Domain company.com
authorization_endpoint : https://login.microsoftonline.com/5b62a25d-60c6-40e6-aace-8a43e8b8ba4a/oauth2/authorize
token_endpoint : https://login.microsoftonline.com/5b62a25d-60c6-40e6-aace-8a43e8b8ba4a/oauth2/token
token_endpoint_auth_methods_supported : {client_secret_post, private_key_jwt, client_secret_basic}
jwks_uri : https://login.microsoftonline.com/common/discovery/keys
response_modes_supported : {query, fragment, form_post}
subject_types_supported : {pairwise}
id_token_signing_alg_values_supported : {RS256}
http_logout_supported : True
frontchannel_logout_supported : True
end_session_endpoint : https://login.microsoftonline.com/5b62a25d-60c6-40e6-aace-8a43e8b8ba4a/oauth2/logout
response_types_supported : {code, id_token, code id_token, token id_token...}
scopes_supported : {openid}
issuer : https://sts.windows.net/5b62a25d-60c6-40e6-aace-8a43e8b8ba4a/
claims_supported : {sub, iss, cloud_instance_name, cloud_instance_host_name...}
microsoft_multi_refresh_token : True
check_session_iframe : https://login.microsoftonline.com/5b62a25d-60c6-40e6-aace-8a43e8b8ba4a/oauth2/checkses
sion
userinfo_endpoint : https://login.microsoftonline.com/5b62a25d-60c6-40e6-aace-8a43e8b8ba4a/openid/userinfo
tenant_region_scope : EU
cloud_instance_name : microsoftonline.com
cloud_graph_host_name : graph.windows.net
msgraph_host : graph.microsoft.com
rbac_url : https://pas.windows.net
#>
[cmdletbinding()]
Param(
[Parameter(ParameterSetName='Domain',Mandatory=$True)]
[String]$Domain,
[Parameter(ParameterSetName='User',Mandatory=$True)]
[String]$UserName
)
Process
{
if([String]::IsNullOrEmpty($Domain))
{
$Domain = $UserName.Split("@")[1]
}
# Call the API
$openIdConfig=Invoke-RestMethod -UseBasicParsing "https://login.microsoftonline.com/$domain/.well-known/openid-configuration"
# Return
$openIdConfig
}
}
# Get the tenant ID for the given user/domain/accesstoken
function Get-TenantID
{
<#
.SYNOPSIS
Returns TenantID of the given domain, user, or AccessToken
.DESCRIPTION
Returns TenantID of the given domain, user, or AccessToken
.Example
Get-AADIntTenantID -UserName "[email protected]"
.Example
Get-AADIntTenantID -Domain company.com
.Example
Get-AADIntTenantID -AccessToken $at
#>
[cmdletbinding()]
Param(
[Parameter(ParameterSetName='Domain',Mandatory=$True)]
[String]$Domain,
[Parameter(ParameterSetName='User',Mandatory=$True)]
[String]$UserName,
[Parameter(ParameterSetName='AccessToken', Mandatory=$True)]
[String]$AccessToken
)
Process
{
if([String]::IsNullOrEmpty($AccessToken))
{
if([String]::IsNullOrEmpty($Domain))
{
$Domain = $UserName.Split("@")[1]
}
Try
{
$OpenIdConfig = Get-OpenIDConfiguration -Domain $domain
}
catch
{
return $null
}
$TenantId = $OpenIdConfig.authorization_endpoint.Split("/")[3]
}
else
{
$TenantId=(Read-Accesstoken($AccessToken)).tid
}
# Return
$TenantId
}
}
# Check if the access token has expired
function Is-AccessTokenExpired
{
[cmdletbinding()]
Param(
[Parameter(Mandatory=$True)]
[String]$AccessToken
)
Process
{
# Read the token
$token = Read-Accesstoken($AccessToken)
$now=(Get-Date).ToUniversalTime()
# Get the expiration time
$exp=$epoch.Date.AddSeconds($token.exp)
# Compare and return
$retVal = $now -ge $exp
return $retVal
}
}
# Check if the access token signature is valid
# May 20th 2020
function Is-AccessTokenValid
{
[cmdletbinding()]
Param(
[Parameter(Mandatory=$True)]
[String]$AccessToken
)
Process
{
# Token sections
$sections = $AccessToken.Split(".")
$header = $sections[0]
$payload = $sections[1]
$signature = $sections[2]
$signatureValid = $false
# Fill the header with padding for Base 64 decoding
while ($header.Length % 4)
{
$header += "="
}
# Convert the token to string and json
$headerBytes=[System.Convert]::FromBase64String($header)
$headerArray=[System.Text.Encoding]::ASCII.GetString($headerBytes)
$headerObj=$headerArray | ConvertFrom-Json
# Get the signing key
$KeyId=$headerObj.kid
Write-Debug "PARSED TOKEN HEADER: $($headerObj | Format-List | Out-String)"
# The algorithm should be RSA with SHA-256, i.e. RS256
if($headerObj.alg -eq "RS256")
{
# Get the public certificate
$publicCert = Get-APIKeys -KeyId $KeyId
Write-Debug "TOKEN SIGNING CERT: $publicCert"
$certBin=[convert]::FromBase64String($publicCert)
# Construct the JWT data to be verified
$dataToVerify="{0}.{1}" -f $header,$payload
$dataBin = [text.encoding]::UTF8.GetBytes($dataToVerify)
# Remove the Base64 URL encoding from the signature and add padding
$signature=$signature.Replace("-","+").Replace("_","/")
while ($signature.Length % 4)
{
$signature += "="
}
$signBytes = [convert]::FromBase64String($signature)
# Extract the modulus and exponent from the certificate
for($a=0;$a -lt $certBin.Length ; $a++)
{
# Read the bytes
$byte = $certBin[$a]
$nByte = $certBin[$a+1]
# We are only interested in 0x02 tag where our modulus is hidden..
if($byte -eq 0x02 -and $nByte -band 0x80)
{
$a++
if($nbyte -band 0x02)
{
$byteCount = [System.BitConverter]::ToInt16($certBin[$($a+2)..$($a+1)],0)
$a+=3
}
elseif($nbyte -band 0x01)
{
$byteCount = $certBin[$($a+1)]
$a+=2
}
# If the first byte is 0x00, skip it
if($certBin[$a] -eq 0x00)
{
$a++
$byteCount--
}
# Now we have the modulus!
$modulus = $certBin[$a..$($a+$byteCount-1)]
# Next byte value is the exponent
$a+=$byteCount
if($certBin[$a++] -eq 0x02)
{
$byteCount = $certBin[$a++]
$exponent = $certBin[$a..$($a+$byteCount-1)]
Write-Debug "MODULUS: $(Convert-ByteArrayToHex -Bytes $modulus)"
Write-Debug "EXPONENT: $(Convert-ByteArrayToHex -Bytes $exponent)"
break
}
else
{
Write-Debug "Error getting modulus and exponent"
}
}
}
if($exponent -and $modulus)
{
# Create the RSA and other required objects
$rsa = New-Object -TypeName System.Security.Cryptography.RSACryptoServiceProvider
$rsaParameters = New-Object -TypeName System.Security.Cryptography.RSAParameters
# Set the verification parameters
$rsaParameters.Exponent = $exponent
$rsaparameters.Modulus = $modulus
$rsa.ImportParameters($rsaParameters)
$signatureValid = $rsa.VerifyData($dataBin, $signBytes,[System.Security.Cryptography.HashAlgorithmName]::SHA256, [System.Security.Cryptography.RSASignaturePadding]::Pkcs1)
$rsa.Dispose()
}
}
else
{
Write-Error "Access Token signature algorithm $($headerObj.alg) not supported!"
}
return $signatureValid
}
}
# Gets OAuth information using SAML token
function Get-OAuthInfoUsingSAML
{
[cmdletbinding()]
Param(
[Parameter(Mandatory=$True)]
[String]$SAMLToken,
[Parameter(Mandatory=$True)]
[String]$Resource,
[Parameter(Mandatory=$False)]
[String]$ClientId="1b730954-1685-4b74-9bfd-dac224a7b894"
)
Begin
{
# Create the headers. We like to be seen as Outlook.
$headers = @{
"User-Agent" = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 10.0; WOW64; Trident/7.0; .NET4.0C; .NET4.0E; Tablet PC 2.0; Microsoft Outlook 16.0.4266)"
}
}
Process
{
$encodedSamlToken= [Convert]::ToBase64String([System.Text.Encoding]::UTF8.GetBytes($SAMLToken))
# Debug
Write-Debug "SAML TOKEN: $samlToken"
Write-Debug "ENCODED SAML TOKEN: $encodedSamlToken"
# Create a body for API request
$body = @{
"resource"=$Resource
"client_id"=$ClientId
"grant_type"="urn:ietf:params:oauth:grant-type:saml1_1-bearer"
"assertion"=$encodedSamlToken
"scope"="openid"
}
# Debug
Write-Debug "FED AUTHENTICATION BODY: $($body | Out-String)"
# Set the content type and call the Microsoft Online authentication API
$contentType="application/x-www-form-urlencoded"
try
{
$jsonResponse=Invoke-RestMethod -UseBasicParsing -Uri "https://login.microsoftonline.com/common/oauth2/token" -ContentType $contentType -Method POST -Body $body -Headers $headers
}
catch
{
Throw ($_.ErrorDetails.Message | convertfrom-json).error_description
}
return $jsonResponse
}
}
# Return OAuth information for the given user
function Get-OAuthInfo
{
[cmdletbinding()]
Param(
[Parameter(Mandatory=$True)]
[System.Management.Automation.PSCredential]$Credentials,
[Parameter(Mandatory=$True)]
[String]$Resource,
[Parameter(Mandatory=$False)]
[String]$ClientId="1b730954-1685-4b74-9bfd-dac224a7b894",
[Parameter(Mandatory=$False)]
[String]$Tenant="common"
)
Begin
{
# Create the headers. We like to be seen as Outlook.
$headers = @{
"User-Agent" = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 10.0; WOW64; Trident/7.0; .NET4.0C; .NET4.0E; Tablet PC 2.0; Microsoft Outlook 16.0.4266)"
}
if([string]::IsNullOrEmpty($Tenant))
{
$Tenant="common"
}
}
Process
{
# Get the user realm
$userRealm = Get-UserRealm($Credentials.UserName)
# Check the authentication type
if($userRealm.account_type -eq "Unknown")
{
Write-Error "User type of $($Credentials.Username) is Unknown!"
return $null
}
elseif($userRealm.account_type -eq "Managed")
{
# If authentication type is managed, we authenticate directly against Microsoft Online
# with user name and password to get access token
# Create a body for REST API request
$body = @{
"resource"=$Resource
"client_id"=$ClientId
"grant_type"="password"
"username"=$Credentials.UserName
"password"=$Credentials.GetNetworkCredential().Password
"scope"="openid"
}
# Debug
Write-Debug "AUTHENTICATION BODY: $($body | Out-String)"
# Set the content type and call the Microsoft Online authentication API
$contentType="application/x-www-form-urlencoded"
try
{
$jsonResponse=Invoke-RestMethod -UseBasicParsing -Uri "https://login.microsoftonline.com/$Tenant/oauth2/token" -ContentType $contentType -Method POST -Body $body -Headers $headers
}
catch
{
Throw ($_.ErrorDetails.Message | convertfrom-json).error_description
}
}
else
{
# If authentication type is Federated, we must first authenticate against the identity provider
# to fetch SAML token and then get access token from Microsoft Online
# Get the federation metadata url from user realm
$federation_metadata_url=$userRealm.federation_metadata_url
# Call the API to get metadata
[xml]$response=Invoke-RestMethod -UseBasicParsing -Uri $federation_metadata_url
# Get the url of identity provider endpoint.
# Note! Tested only with AD FS - others may or may not work
$federation_url=($response.definitions.service.port | where name -eq "UserNameWSTrustBinding_IWSTrustFeb2005Async").address.location
# login.live.com
# TODO: Fix
#$federation_url=$response.EntityDescriptor.RoleDescriptor[1].PassiveRequestorEndpoint.EndpointReference.Address
# Set credentials and other needed variables
$username=$Credentials.UserName
$password=$Credentials.GetNetworkCredential().Password
$created=(Get-Date).ToUniversalTime().toString("yyyy-MM-ddTHH:mm:ssZ").Replace(".",":")
$expires=(Get-Date).AddMinutes(10).ToUniversalTime().toString("yyyy-MM-ddTHH:mm:ssZ").Replace(".",":")
$message_id=(New-Guid).ToString()
$user_id=(New-Guid).ToString()
# Set headers
$headers = @{
"SOAPAction"="http://schemas.xmlsoap.org/ws/2005/02/trust/RST/Issue"
"Host"=$federation_url.Split("/")[2]
"client-request-id"=(New-Guid).toString()
}
# Debug
Write-Debug "FED AUTHENTICATION HEADERS: $($headers | Out-String)"
# Create the SOAP envelope
$envelope=@"
<s:Envelope xmlns:s='http://www.w3.org/2003/05/soap-envelope' xmlns:a='http://www.w3.org/2005/08/addressing' xmlns:u='http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd'>
<s:Header>
<a:Action s:mustUnderstand='1'>http://schemas.xmlsoap.org/ws/2005/02/trust/RST/Issue</a:Action>
<a:MessageID>urn:uuid:$message_id</a:MessageID>
<a:ReplyTo>
<a:Address>http://www.w3.org/2005/08/addressing/anonymous</a:Address>
</a:ReplyTo>
<a:To s:mustUnderstand='1'>$federation_url</a:To>
<o:Security s:mustUnderstand='1' xmlns:o='http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd'>
<u:Timestamp u:Id='_0'>
<u:Created>$created</u:Created>
<u:Expires>$expires</u:Expires>
</u:Timestamp>
<o:UsernameToken u:Id='uuid-$user_id'>
<o:Username>$username</o:Username>
<o:Password>$password</o:Password>
</o:UsernameToken>
</o:Security>
</s:Header>
<s:Body>
<trust:RequestSecurityToken xmlns:trust='http://schemas.xmlsoap.org/ws/2005/02/trust'>
<wsp:AppliesTo xmlns:wsp='http://schemas.xmlsoap.org/ws/2004/09/policy'>
<a:EndpointReference>
<a:Address>urn:federation:MicrosoftOnline</a:Address>
</a:EndpointReference>
</wsp:AppliesTo>
<trust:KeyType>http://schemas.xmlsoap.org/ws/2005/05/identity/NoProofKey</trust:KeyType>
<trust:RequestType>http://schemas.xmlsoap.org/ws/2005/02/trust/Issue</trust:RequestType>
</trust:RequestSecurityToken>
</s:Body>
</s:Envelope>
"@
# Debug
Write-Debug "FED AUTHENTICATION: $envelope"
# Set the content type and call the authentication service
$contentType="application/soap+xml"
[xml]$xmlResponse=Invoke-RestMethod -UseBasicParsing -Uri $federation_url -ContentType $contentType -Method POST -Body $envelope -Headers $headers
# Get the SAML token from response and encode it with Base64
$samlToken=$xmlResponse.Envelope.Body.RequestSecurityTokenResponse.RequestedSecurityToken.Assertion.OuterXml
$encodedSamlToken= [Convert]::ToBase64String([System.Text.Encoding]::UTF8.GetBytes($samlToken))
$jsonResponse = Get-OAuthInfoUsingSAML -SAMLToken $samlToken -Resource $Resource -ClientId $ClientId
}
# Debug
Write-Debug "AUTHENTICATION JSON: $($jsonResponse | Out-String)"
# Return
$jsonResponse
}
}
# Parse access token and return it as PS object
function Read-Accesstoken
{
<#
.SYNOPSIS
Extract details from the given Access Token
.DESCRIPTION
Extract details from the given Access Token and returns them as PS Object
.Parameter AccessToken
The Access Token.
.Example
PS C:\>$token=Get-AADIntReadAccessTokenForAADGraph
PS C:\>Parse-AADIntAccessToken -AccessToken $token
aud : https://graph.windows.net
iss : https://sts.windows.net/f2b2ba53-ed2a-4f4c-a4c3-85c61e548975/
iat : 1589477501
nbf : 1589477501
exp : 1589481401
acr : 1
aio : ASQA2/8PAAAALe232Yyx9l=
amr : {pwd}
appid : 1b730954-1685-4b74-9bfd-dac224a7b894
appidacr : 0
family_name : company
given_name : admin
ipaddr : 107.210.220.129
name : admin company
oid : 1713a7bf-47ba-4826-a2a7-bbda9fabe948
puid : 100354
rh : 0QfALA.
scp : user_impersonation
sub : BGwHjKPU
tenant_region_scope : NA
tid : f2b2ba53-ed2a-4f4c-a4c3-85c61e548975
unique_name : [email protected]
upn : [email protected]
uti : -EWK6jMDrEiAesWsiAA
ver : 1.0
.Example
PS C:\>Parse-AADIntAccessToken -AccessToken $token -Validate
Read-Accesstoken : Access Token is expired
At line:1 char:1
+ Read-Accesstoken -AccessToken $at -Validate -verbose
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~