Private/GetWorkingCredentials.ps1
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function GetWorkingCredentials { [CmdletBinding(DefaultParameterSetName='PSCredential')] Param( [Parameter(Mandatory=$False)] [string]$RemoteHostNameOrIP, [Parameter( Mandatory=$False, ParameterSetName='PSCredential' )] [System.Management.Automation.PSCredential]$AltCredentials, [Parameter( Mandatory=$False, ParameterSetName='NoCredentialObject' )] [string]$UserName, [Parameter( Mandatory=$False, ParameterSetName='NoCredentialObject' )] [System.Security.SecureString]$Password ) #region >> Helper Functions function Check-CredsAndLockStatus { [CmdletBinding()] Param( [Parameter(Mandatory=$True)] $RemoteHostNetworkInfo, [Parameter( Mandatory=$True, ParameterSetName='PSCredential' )] [System.Management.Automation.PSCredential]$AltCredentials ) $CurrentlyLoadedAssemblies = [System.AppDomain]::CurrentDomain.GetAssemblies() if (![bool]$($CurrentlyLoadedAssemblies -match "System.DirectoryServices.AccountManagement")) { Add-Type -AssemblyName System.DirectoryServices.AccountManagement } $SimpleDomain = $RemoteHostNetworkInfo.Domain $SimpleDomainWLDAPPort = $SimpleDomain + ":3268" $DomainLDAPContainers = "DC=" + $($SimpleDomain -split "\.")[0] + "," + "DC=" + $($SimpleDomain -split "\.")[1] try { $SimpleUserName = $($AltCredentials.UserName -split "\\")[1] $PrincipleContext = [System.DirectoryServices.AccountManagement.PrincipalContext]::new( [System.DirectoryServices.AccountManagement.ContextType]::Domain, "$SimpleDomainWLDAPPort", "$DomainLDAPContainers", [System.DirectoryServices.AccountManagement.ContextOptions]::SimpleBind, "$($AltCredentials.UserName)", "$([Runtime.InteropServices.Marshal]::PtrToStringAuto([Runtime.InteropServices.Marshal]::SecureStringToBSTR($AltCredentials.Password)))" ) try { $UserPrincipal = [System.DirectoryServices.AccountManagement.UserPrincipal]::FindByIdentity($PrincipleContext, [System.DirectoryServices.AccountManagement.IdentityType]::SamAccountName, "$SimpleUserName") $AltCredentialsAreValid = $True } catch { $AltCredentialsAreValid = $False } if ($AltCredentialsAreValid) { # Determine if the User Account is locked $AccountLocked = $UserPrincipal.IsAccountLockedOut() if ($AccountLocked -eq $True) { Write-Error "The provided UserName $($AltCredentials.Username) is locked! Please unlock it before additional attempts at getting working credentials!" $global:FunctionResult = "1" return } } } catch { Write-Error $_ $global:FunctionResult = "1" return } $Output = [ordered]@{ AltCredentialsAreValid = $AltCredentialsAreValid } if ($AccountLocked) { $Output.Add("AccountLocked",$AccountLocked) } [pscustomobject]$Output } #endregion >> Helper Functions #region >> Variable/Parameter Transforms and PreRun Prep $CurrentlyLoadedAssemblies = [System.AppDomain]::CurrentDomain.GetAssemblies() $ResolveHostSplatParams = @{ ErrorAction = "Stop" } if ($RemoteHostNameOrIP) { $ResolveHostSplatParams.Add("HostNameOrIP",$RemoteHostNameOrIP) } else { $ResolveHostSplatParams.Add("HostNameOrIP",$env:ComputerName) } try { $RemoteHostNetworkInfo = ResolveHost @ResolveHostSplatParams } catch { if ($env:ComputerName -eq $($RemoteHostNameOrIP -split "\.")[0]) { $ResolveHostSplatParams = @{ ErrorAction = "Stop" } $ResolveHostSplatParams.Add("HostNameOrIP",$env:ComputerName) try { $RemoteHostNetworkInfo = ResolveHost @ResolveHostSplatParams } catch { Write-Error $_ Write-Error "Unable to resolve $RemoteHostNameOrIP! Halting!" $global:FunctionResult = "1" return } } else { Write-Error $_ Write-Error "Unable to resolve $RemoteHostNameOrIP! Halting!" $global:FunctionResult = "1" return } } if (!$Username -and !$AltCredentials -and $RemoteHostNetworkInfo.HostName -eq $env:ComputerName) { #Write-Warning "The Remote Host is actually the Local Host (i.e. $env:ComputerName)!" $Output = [ordered]@{ LogonType = "LocalAccount" DeterminedCredsThatWorkedOnRemoteHost = $True WorkingCredsAreValidOnDomain = $False WorkingCredentials = "$(whoami)" RemoteHostWorkingLocation = $RemoteHostNetworkInfo.FQDN CurrentLoggedInUserCredsWorked = $True } [pscustomobject]$Output return } $EnvironmentInfo = Get-ItemProperty 'Microsoft.PowerShell.Core\Registry::HKEY_CURRENT_USER\Volatile Environment\' $CurrentUserLogonServer = $EnvironmentInfo.LogonServer -replace '\\\\','' if ($CurrentUserLogonServer -eq $env:ComputerName) { $LogonServerIsDomainController = $False $LoggedInAsLocalUser = $True } else { $LogonServerIsDomainController = $True $LoggedInAsLocalUser = $False } if ($UserName) { while ($UserName -notmatch "\\") { $UserName = Read-Host -Prompt "The provided UserName is NOT in the correct format! Please enter a UserName with access to $($RemoteHostNetworkInfo.FQDN) using format <DomainPrefix_Or_$($RemoteHostNetworkInfo.HostName)>\<UserName>" } if (!$Password) { $Password = Read-Host -Prompt "Please enter the password for $UserName" -AsSecureString } $AltCredentials = [System.Management.Automation.PSCredential]::new($UserName,$Password) } #endregion >> Variable/Parameter Transforms and PreRun Prep #region >> Main Body if ($AltCredentials) { while ($AltCredentials.UserName -notmatch "\\") { $AltUserName = Read-Host -Prompt "The provided UserName is NOT in the correct format! Please enter a UserName with access to $($RemoteHostNetworkInfo.FQDN) using format <DomainPrefix_Or_$($RemoteHostNetworkInfo.HostName)>\<UserName>" $AltPassword = Read-Host -Prompt "Please enter the password for $AltUserName" -AsSecureString $AltCredentials = [System.Management.Automation.PSCredential]::new($AltUserName,$AltPassword) } if ($($AltCredentials.UserName -split "\\")[0] -ne $RemoteHostNetworkInfo.HostName -and $($AltCredentials.UserName -split "\\")[0] -ne $($RemoteHostNetworkInfo.Domain -split "\.")[0] ) { $ErrMsg = "Using the credentials provided we will not be able to find a Logon Server. The credentials do not " + "indicate a Local Logon (i.e. $($RemoteHostNetworkInfo.HostName)\$($($AltCredentials.UserName -split "\\")[1]) " + "or a Domain Logon (i.e. $($($($RemoteHostNetworkInfo.Domain) -split "\.")[0])\$($($AltCredentials.UserName -split "\\")[1])! " + "Halting!" Write-Error $ErrMsg $global:FunctionResult = "1" return } if ($LoggedInAsLocalUser) { # If we ARE trying a Local Account on the Remote Host if ($($AltCredentials.Username -split "\\")[0] -eq $RemoteHostNetworkInfo.HostName) { $LogonType = "LocalAccount" $AltCredentialsUncertain = $True $CurrentUserCredentialsMightWork = $False } # If we ARE NOT trying a Local Account on the Remote Host, we are necessarily trying Domain Credentials if ($($AltCredentials.Username -split "\\")[0] -ne $RemoteHostNetworkInfo.HostName) { $LogonType = "DomainAccount" $CurrentUserCredentialsMightWork = $False $CredsAndLockStatus = Check-CredsAndLockStatus -RemoteHostNetworkInfo $RemoteHostNetworkInfo -AltCredentials $AltCredentials $AltCredentialsAreValid = $CredsAndLockStatus.AltCredentialsAreValid if ($AltCredentialsAreValid) { $AccountLocked = $CredsAndLockStatus.AccountLocked } } } if (!$LoggedInAsLocalUser) { if ($AltCredentials.Username -eq $(whoami)) { # If we ARE trying a Local Account on the Remote Host if ($($AltCredentials.Username -split "\\")[0] -eq $RemoteHostNetworkInfo.HostName) { $LogonType = "LocalAccount" $AltCredentialsUncertain = $True $CurrentUserCredentialsMightWork = $False } # If we ARE NOT trying a Local Account on the Remote Host, we are necessarily trying Domain Credentials if ($($AltCredentials.Username -split "\\")[0] -ne $RemoteHostNetworkInfo.HostName) { $LogonType = "DomainAccount" # We know we're staying within the same Domain... $CurrentUserCredentialsMightWork = $True } } if ($AltCredentials.Username -ne $(whoami)) { # If we ARE trying a Local Account on the Remote Host if ($($AltCredentials.Username -split "\\")[0] -eq $RemoteHostNetworkInfo.HostName) { $LogonType = "LocalAccount" $AltCredentialsUncertain = $True $CurrentUserCredentialsMightWork = $False } # If we ARE NOT trying a Local Account on the Remote Host, we are necessarily trying Domain Credentials if ($($AltCredentials.Username -split "\\")[0] -ne $RemoteHostNetworkInfo.HostName) { $LogonType = "DomainAccount" # If we're staying in the same Domain... if ($EnvironmentInfo.UserDNSDomain -eq $RemoteHostNetworkInfo.Domain) { $CurrentUserCredentialsMightWork = $True } # If we're trying a machine on a different Domain... if ($EnvironmentInfo.UserDNSDomain -ne $RemoteHostNetworkInfo.Domain) { $CredsAndLockStatus = Check-CredsAndLockStatus -RemoteHostNetworkInfo $RemoteHostNetworkInfo -AltCredentials $AltCredentials $AltCredentialsAreValid = $CredsAndLockStatus.AltCredentialsAreValid if ($AltCredentialsAreValid) { $AccountLocked = $CredsAndLockStatus.AccountLocked } } # end Different Domain 'if' block } # end Domain Creds 'if' block } # end $AltCredentials.Username -ne $(whoami) 'if block' } # end !$LoggedInAsLocalUser 'if' block } # end $AltCredentials 'if' block if (!$AltCredentials) { # $AltCredentialsAreValid -eq $False because they are not provided... $AltCredentialsAreValid = $False if ($LoggedInAsLocalUser) { $CurrentUserCredentialsMightWork = $False } else { if ($RemoteHostNetworkInfo.Domain -eq $EnvironmentInfo.UserDNSDomain) { $LogonType = "DomainAccount" $CurrentUserCredentialsMightWork = $True } else { $CurrentUserCredentialsMightWork = $False } } } if ($AltCredentialsAreValid -or $AltCredentialsUncertain) { # NOTE: For some reason, there are situations where FQDN works over HostName or visa versa. So we use # logic to try FQDN, and if that fails, try HostName try { $InvokeCommandOutput = Invoke-Command -ComputerName $RemoteHostNetworkInfo.FQDN -Credential $AltCredentials -ScriptBlock {"Success"} -ErrorAction Stop $TargetHostLocation = $RemoteHostNetworkInfo.FQDN $CredentialsWorked = $True $ProvidedCredsWorked = $True } catch { try { $InvokeCommandOutput = Invoke-Command -ComputerName $RemoteHostNetworkInfo.HostName -Credential $AltCredentials -ScriptBlock {"Success"} -ErrorAction Stop $TargetHostLocation = $RemoteHostNetworkInfo.HostName $CredentialsWorked = $True $ProvidedCredsWorked = $True } catch { if ($CurrentUserCredentialsMightWork) { $TryCurrentUserCreds = $True } else { Write-Warning "Unable to determine working credentials for $RemoteHostNameOrIP!" } } } } if ($($AltCredentialsAreValid -and $TryCurrentUserCreds) -or $(!$AltCredentials -and $CurrentUserCredentialsMightWork) -or $(!$LoggedInAsLocalUser -and $AltCredentials.Username -eq $(whoami)) ) { try { $InvokeCommandOutput = Invoke-Command -ComputerName $RemoteHostNetworkInfo.FQDN -ScriptBlock {"Success"} -ErrorAction Stop $TargetHostLocation = $RemoteHostNetworkInfo.FQDN $CredentialsWorked = $True $TriedCurrentlyLoggedInUser = $True } catch { try { $InvokeCommandOutput = Invoke-Command -ComputerName $RemoteHostNetworkInfo.HostName -ScriptBlock {"Success"} -ErrorAction Stop $TargetHostLocation = $RemoteHostNetworkInfo.HostName $CredentialsWorked = $True $TriedCurrentlyLoggedInUser = $True } catch { Write-Warning "Unable to determine working credentials for $RemoteHostNameOrIP!" } } } # Create Output $Output = [ordered]@{ LogonType = $LogonType } $CredentialsWorked = if ($CredentialsWorked) {$True} else {$False} $Output.Add("DeterminedCredsThatWorkedOnRemoteHost",$CredentialsWorked) if ($CredentialsWorked) { if ($LogonType -eq "LocalAccount") { $Output.Add("WorkingCredsAreValidOnDomain",$False) } else { $Output.Add("WorkingCredsAreValidOnDomain",$True) } if ($AltCredentials -and $ProvidedCredsWorked) { $WorkingCredentials = $AltCredentials } else { $WorkingCredentials = "$(whoami)" } $Output.Add("WorkingCredentials",$WorkingCredentials) $Output.Add("RemoteHostWorkingLocation",$TargetHostLocation) } if ($WorkingCredentials.UserName -eq "$(whoami)" -or $WorkingCredentials -eq "$(whoami)") { $Output.Add("CurrentLoggedInUserCredsWorked",$True) } else { if (!$TriedCurrentlyLoggedInUser) { $Output.Add("CurrentLoggedInUserCredsWorked","NotTested") } elseif ($TriedCurrentlyLoggedInUser -and $CredentialsWorked) { $Output.Add("CurrentLoggedInUserCredsWorked",$True) } elseif ($TriedCurrentlyLoggedInUser -and !$CredentialsWorked) { $Output.Add("CurrentLoggedInUserCredsWorked",$False) } } if ($AltCredentials) { if ($LogonType -eq "LocalAccount" -or $AltCredentialsAreValid -eq $False) { $Output.Add("ProvidedCredsAreValidOnDomain",$False) } elseif ($AltCredentialsAreValid -eq $True -or $ProvidedCredsWorked) { $Output.Add("ProvidedCredsAreValidOnDomain",$True) } elseif ($ProvidedCredsWorked -eq $null) { $Output.Add("ProvidedCredsAreValidOnDomain","NotTested") } elseif ($ProvidedCredsWorked -eq $False) { $Output.Add("ProvidedCredsAreValidOnDomain",$False) } else { $Output.Add("ProvidedCredsAreValidOnDomain",$AltCredentialsAreValid) } } if ($AltCredentialsAreValid -and !$CredentialsWorked) { $FinalWarnMsg = "Either $($RemoteHostNetworkInfo.FQDN) and/or $($RemoteHostNetworkInfo.HostName) " + "and/or $($RemoteHostNetworkInfo.IPAddressList[0]) is not part of the WinRM Trusted Hosts list " + "(see '`$(Get-ChildItem WSMan:\localhost\Client\TrustedHosts).Value'), or the WinRM Service on " + "$($RemoteHostNetworkInfo.FQDN) is not running, or $($AltCredentials.UserName) specifically " + "does not have access to $($RemoteHostNetworkInfo.FQDN)! If $($RemoteHostNetworkInfo.FQDN) is " + "not part of a Domain, then you may also need to add this regsitry setting on $($RemoteHostNetworkInfo.FQDN):`n" + " reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v LocalAccountTokenFilterPolicy /t REG_DWORD /d 1 /f" + "Lastly, use the 'Get-NetConnectionProfile' cmdlet on $($RemoteHostNetworkInfo.FQDN) to determine if any " + "network adapters have a 'NetworkCategory' of 'Public'. If so you must change them to 'Private' via:`n" + " Get-NetConnectionProfile | Where-Object {`$_.NetworkCategory -eq 'Public'} | Set-NetConnectionProfile -NetworkCategory 'Private'" Write-Warning $FinalWarnMsg } [pscustomobject]$Output #endregion >> Main Body } |