Resolve SGU staff addresses and provision local student user

README.md

@@ -9,7 +9,7 @@ source and adds an SGU-specific provider, an mTLS-protected broker, Active
 Directory synchronization, deployment scripts, and tests.
 
 Ready-to-run bootstrap packages are published on the
-[releases page](https://github.lci.ulsa.mx/alexrg/SGU-CredentialProvider/releases).
+[releases page](https://gitea.lci.ulsa.mx/alexrg/SGU-CredentialProvider/releases).
 
 ## Authentication contract
 
@@ -44,6 +44,13 @@ skips that optional field. Missing or changed presentation HTML never blocks
 authentication or password synchronization after the lightweight NTLM root has
 accepted the credential.
 
+For administrative staff and professors, the location page is enriched with its
+ASP.NET PageMethods responses. `GetDireccion` supplies the saved state,
+municipality and neighborhood identifiers; `GetLocalidadListado` resolves the
+municipality name, and `GetColoniasListado` validates or supplies the
+neighborhood name. This avoids reading the temporary `Seleccione...` values
+visible while the browser populates those controls asynchronously.
+
 Operational documentation:
 
 - [One-command server recovery and client enrollment](docs/bootstrap-recovery.md)

docs/architecture.md

@@ -28,7 +28,11 @@ It uses the administrative incident overview for `AD`, the student information
 page for `AL`, and the portal menu as a conservative base for `DO`. After the
 incident page confirms an `AD` employee number, two additional GETs in the same
 in-memory session read the structured name and selected sex from
-`datos/personales.aspx` and the address from `datos/ubicacion.aspx`. Docentes request
+`datos/personales.aspx` and the address inputs from `datos/ubicacion.aspx`. The
+broker then calls the location page's `GetDireccion`, `GetLocalidadListado`, and
+`GetColoniasListado` methods to correlate the saved state, municipality, and
+neighborhood identifiers instead of reading transient `Seleccione...` options.
+Docentes request
 `nomina/consultanomina.aspx` for a matching employee number, email, employee
 type and job title, then attempt the same two shared staff modules without
 requiring any optional route to exist. A supplemental

docs/client-enrollment.md

@@ -72,11 +72,13 @@ Orden de la transacción:
 1. instala .NET y los binarios versionados;
 2. registra COM, configura SGU como proveedor predeterminado y oculta el
    último usuario que cerró sesión;
-3. instala el guard de autorreparación;
+3. crea o actualiza la cuenta local estándar `alumno` con la contraseña
-4. exige health mTLS del broker y ejecuta las comprobaciones locales;
+   `ingenieria`, la habilita y garantiza que no pertenezca a Administradores;
-5. configura DNS del dominio;
+4. instala el guard de autorreparación;
-6. sólo entonces ejecuta `Add-Computer` en `OU=Laboratorio` y reinicia;
+5. exige health mTLS del broker y ejecuta las comprobaciones locales;
-7. al arrancar, el guard habilita RDP, NLA y WinRM y comprueba el estado final.
+6. configura DNS del dominio;
+7. sólo entonces ejecuta `Add-Computer` en `OU=Laboratorio` y reinicia;
+8. al arrancar, el guard habilita RDP, NLA y WinRM y comprueba el estado final.
 
 La directiva de Windows **Assign a default credential provider** selecciona SGU
 por defecto. El instalador también habilita **Interactive logon: Don't display
@@ -138,8 +140,9 @@ Start-ScheduledTask -TaskName SGU-CredentialProvider-EnrollmentGuard
 
 Un resultado válido exige simultáneamente binario y registro COM, configuración,
 certificados, .NET 10, proveedor SGU predeterminado, último usuario oculto,
-enumeración local deshabilitada y proveedor de contraseña de Microsoft
+enumeración local deshabilitada, cuenta local estándar `alumno` habilitada y
-preservado. El script de reparación se encuentra en
+fuera del grupo Administradores, y proveedor de contraseña de Microsoft
+preservado. El guard recrea o corrige esa cuenta de forma idempotente. El script de reparación se encuentra en
 `C:\ProgramData\SGU\Enrollment` con ACL exclusiva para `SYSTEM` y
 administradores.
 

scripts/Enroll-SguDomainClient.ps1

@@ -41,6 +41,7 @@ if (-not $principal.IsInRole([Security.Principal.WindowsBuiltInRole]::Administra
 foreach ($scriptName in @(
     'Install-CredentialProvider.ps1',
     'Install-SguEnrollmentGuard.ps1',
+    'Set-SguStandardLocalUser.ps1',
     'Test-SguClientEnrollment.ps1',
     'Repair-SguClientEnrollment.ps1',
     'Enable-LabRemoteAccess.ps1',
@@ -115,6 +116,7 @@ if ($PSCmdlet.ShouldProcess($env:COMPUTERNAME, 'Install and verify SGU before jo
             -ServerAddress $RustDeskServerAddress `
             -ServerPublicKey $RustDeskServerPublicKey
     }
+    $localStudentUser = & (Join-Path $PSScriptRoot 'Set-SguStandardLocalUser.ps1')
     & (Join-Path $PSScriptRoot 'Install-SguEnrollmentGuard.ps1') @guardParams | Out-Null
 
     $testParameters = @{ RequireBrokerHealth = $true }
@@ -142,6 +144,7 @@ if ($PSCmdlet.ShouldProcess($env:COMPUTERNAME, 'Install and verify SGU before jo
             $postJoinParameters.RustDeskServerAddress = $RustDeskServerAddress
         }
         $postJoin = & (Join-Path $PSScriptRoot 'Test-SguClientEnrollment.ps1') @postJoinParameters
+        $postJoin | Add-Member -NotePropertyName StandardLocalUser -NotePropertyValue $localStudentUser
         $postJoin | Add-Member -NotePropertyName RustDesk -NotePropertyValue $rustDeskResult
         return $postJoin
     }
@@ -175,6 +178,7 @@ if ($PSCmdlet.ShouldProcess($env:COMPUTERNAME, 'Install and verify SGU before jo
     DomainName = $DomainName
     ConnectivityMode = $ConnectivityMode
     ProviderValidatedBeforeJoin = $true
+    StandardLocalUser = $localStudentUser
     RustDesk = $rustDeskResult
     RestartRequired = [bool]$SkipRestart
 }

scripts/Install-SguEnrollmentGuard.ps1

@@ -32,6 +32,7 @@ $sourceScripts = @(
     'Enable-LabRemoteAccess.ps1',
     'Enable-SguClientMonitoring.ps1',
     'Install-SguRustDeskClient.ps1',
+    'Set-SguStandardLocalUser.ps1',
     'Test-SguClientEnrollment.ps1',
     'Repair-SguClientEnrollment.ps1'
 )

scripts/New-SguBootstrapPackages.ps1

@@ -118,6 +118,7 @@ $clientScripts = @(
     'Install-SguRustDeskClient.ps1',
     'Register-SguClientCertificate.ps1',
     'Repair-SguClientEnrollment.ps1',
+    'Set-SguStandardLocalUser.ps1',
     'Test-SguClientEnrollment.ps1'
 )
 foreach ($scriptName in $clientScripts) {

scripts/Publish-GiteaRelease.ps1

@@ -117,6 +117,8 @@ Bootstrap reproducible para el laboratorio SGU.
 - El bootstrap Azure conserva la IP privada administrada por la NIC de Azure, autoriza el pool P2S en los firewalls SGU y nunca publica LDAP, Kerberos, SMB, RPC, WinRM ni el Auth Broker directamente a Internet.
 - Los Windows 11 Pro pueden instalar un perfil IKEv2 de todos los usuarios con certificado de máquina, DNS dividido para `lci.lasalle.mx` y ejecutarlo desde la pantalla de inicio de sesión antes de autenticar una cuenta de dominio nueva.
 - El Auth Broker clasifica sin tareas programadas cada cuenta autenticada: `AL` se agrega a `SGU-Alumnos`, `AD` a `SGU-Administrativos` y `DO` a `SGU-Docentes`; el bootstrap crea cada grupo dentro de la OU de su rol y migra idempotentemente cualquier grupo heredado sin cambiar su SID.
+- El Auth Broker resuelve la dirección guardada de administrativos y docentes mediante `GetDireccion`, `GetLocalidadListado` y `GetColoniasListado`, evitando conservar los valores transitorios `Seleccione...` de los controles dinámicos de SGU.
+- El enrolamiento y la reparación de clientes Windows crean y verifican idempotentemente la cuenta local estándar `alumno`, sin pertenencia al grupo de administradores.
 - El enriquecimiento obtiene el sexo de los módulos SGU de personal/alumnos, lo conserva como la línea administrada `SGU-Gender: Male|Female` en Notas de AD y adapta el fondo de Windows/Linux; cuando falta utiliza redacción neutral.
 - El servidor configura WEF/WEC para registrar sesiones y fallos, inventariar el estado alcanzable de las máquinas cada cinco minutos y conservar durante 183 días tanto esos eventos como el diagnóstico estructurado del Auth Broker.
 - Windows Home se detecta y se rechaza con una explicación, ya que no admite unión a Active Directory ni RDP host.

scripts/Repair-SguClientEnrollment.ps1

@@ -11,9 +11,11 @@ $installScript = Join-Path $enrollmentRoot 'Install-CredentialProvider.ps1'
 $remoteAccessScript = Join-Path $enrollmentRoot 'Enable-LabRemoteAccess.ps1'
 $monitoringScript = Join-Path $enrollmentRoot 'Enable-SguClientMonitoring.ps1'
 $rustDeskScript = Join-Path $enrollmentRoot 'Install-SguRustDeskClient.ps1'
+$localUserScript = Join-Path $enrollmentRoot 'Set-SguStandardLocalUser.ps1'
 
 $before = & $testScript
 if (-not $before.IsValid) {
+    & $localUserScript | Out-Null
     $installParams = @{
         PublishPath = [string]$configuration.PublishPath
         BrokerEndpoint = [string]$configuration.BrokerEndpoint

scripts/Set-SguStandardLocalUser.ps1

@@ -0,0 +1,84 @@
+#Requires -Version 5.1
+[CmdletBinding(SupportsShouldProcess)]
+param()
+
+$ErrorActionPreference = 'Stop'
+$userName = 'alumno'
+$plainTextPassword = 'ingenieria'
+$description = 'Cuenta local estandar de recuperacion para equipos SGU'
+
+$identity = [Security.Principal.WindowsIdentity]::GetCurrent()
+$principal = [Security.Principal.WindowsPrincipal]::new($identity)
+if (-not $principal.IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)) {
+    throw 'Run this script from an elevated Windows PowerShell session.'
+}
+
+if (-not $PSCmdlet.ShouldProcess($env:COMPUTERNAME, "Create or update standard local user $userName")) {
+    return
+}
+
+$securePassword = ConvertTo-SecureString $plainTextPassword -AsPlainText -Force
+try {
+    $user = Get-LocalUser -Name $userName -ErrorAction SilentlyContinue
+    if ($user -and $user.SID.Value.EndsWith('-500', [StringComparison]::Ordinal)) {
+        throw "The local account '$userName' is the built-in Administrator account and cannot be converted to a standard user."
+    }
+
+    if ($user) {
+        Set-LocalUser -Name $userName `
+            -Password $securePassword `
+            -PasswordNeverExpires $true `
+            -Description $description
+        if (-not $user.Enabled) {
+            Enable-LocalUser -Name $userName
+        }
+    }
+    else {
+        New-LocalUser -Name $userName `
+            -Password $securePassword `
+            -PasswordNeverExpires `
+            -Description $description | Out-Null
+    }
+
+    $user = Get-LocalUser -Name $userName -ErrorAction Stop
+    $administratorsSid = [Security.Principal.SecurityIdentifier]::new('S-1-5-32-544')
+    $usersSid = [Security.Principal.SecurityIdentifier]::new('S-1-5-32-545')
+    $administratorsGroup = Get-LocalGroup -SID $administratorsSid -ErrorAction Stop
+    $usersGroup = Get-LocalGroup -SID $usersSid -ErrorAction Stop
+    $administratorMembers = @(Get-LocalGroupMember -Group $administratorsGroup -ErrorAction Stop)
+    if ($administratorMembers.SID.Value -contains $user.SID.Value) {
+        Remove-LocalGroupMember -Group $administratorsGroup -Member $user -Confirm:$false
+    }
+
+    $standardMembers = @(Get-LocalGroupMember -Group $usersGroup -ErrorAction Stop)
+    if ($standardMembers.SID.Value -notcontains $user.SID.Value) {
+        Add-LocalGroupMember -Group $usersGroup -Member $user
+    }
+}
+finally {
+    $securePassword = $null
+}
+
+$verifiedUser = Get-LocalUser -Name $userName -ErrorAction Stop
+$verifiedAdministratorsGroup = Get-LocalGroup `
+    -SID ([Security.Principal.SecurityIdentifier]::new('S-1-5-32-544')) `
+    -ErrorAction Stop
+$verifiedUsersGroup = Get-LocalGroup `
+    -SID ([Security.Principal.SecurityIdentifier]::new('S-1-5-32-545')) `
+    -ErrorAction Stop
+$verifiedAdministrators = @(Get-LocalGroupMember -Group $verifiedAdministratorsGroup -ErrorAction Stop)
+$verifiedUsers = @(Get-LocalGroupMember -Group $verifiedUsersGroup -ErrorAction Stop)
+if (@($verifiedAdministrators).SID.Value -contains $verifiedUser.SID.Value) {
+    throw "The local account '$userName' still belongs to the local Administrators group."
+}
+if ($verifiedUsers.SID.Value -notcontains $verifiedUser.SID.Value) {
+    throw "The local account '$userName' does not belong to the local Users group."
+}
+
+[pscustomobject]@{
+    UserName = $verifiedUser.Name
+    Enabled = $verifiedUser.Enabled
+    IsAdministrator = $false
+    IsStandardUser = $true
+    PasswordNeverExpires = $verifiedUser.PasswordNeverExpires
+}

scripts/Test-SguClientEnrollment.ps1

@@ -19,6 +19,7 @@ $defaultProviderPolicyPath = 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\System'
 $interactiveLogonPolicyPath = 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System'
 $settingsPath = Join-Path $env:ProgramData 'SGU\CredentialProvider\settings.json'
 $issues = [Collections.Generic.List[string]]::new()
+$standardLocalUserName = 'alumno'
 
 $computer = Get-CimInstance Win32_ComputerSystem
 if ($RequireDomainJoined -and -not $computer.PartOfDomain) {
@@ -87,6 +88,41 @@ if (-not $passwordProviderPreserved) {
     $issues.Add('The built-in Microsoft password provider registration is missing.')
 }
 
+$standardLocalUser = Get-LocalUser -Name $standardLocalUserName -ErrorAction SilentlyContinue
+$standardLocalUserPresent = [bool]$standardLocalUser
+$standardLocalUserEnabled = $standardLocalUserPresent -and $standardLocalUser.Enabled
+$standardLocalUserIsAdministrator = $false
+$standardLocalUserInUsersGroup = $false
+$standardLocalUserPasswordNeverExpires =
+    $standardLocalUserPresent -and $standardLocalUser.PasswordNeverExpires
+if ($standardLocalUserPresent) {
+    $administratorsSid = [Security.Principal.SecurityIdentifier]::new('S-1-5-32-544')
+    $usersSid = [Security.Principal.SecurityIdentifier]::new('S-1-5-32-545')
+    $administratorsGroup = Get-LocalGroup -SID $administratorsSid -ErrorAction Stop
+    $usersGroup = Get-LocalGroup -SID $usersSid -ErrorAction Stop
+    $administratorMembers = @(Get-LocalGroupMember -Group $administratorsGroup -ErrorAction Stop)
+    $standardMembers = @(Get-LocalGroupMember -Group $usersGroup -ErrorAction Stop)
+    $standardLocalUserIsAdministrator =
+        $administratorMembers.SID.Value -contains $standardLocalUser.SID.Value
+    $standardLocalUserInUsersGroup =
+        $standardMembers.SID.Value -contains $standardLocalUser.SID.Value
+}
+if (-not $standardLocalUserPresent) {
+    $issues.Add("The required standard local user '$standardLocalUserName' is missing.")
+}
+elseif (-not $standardLocalUserEnabled) {
+    $issues.Add("The required standard local user '$standardLocalUserName' is disabled.")
+}
+elseif ($standardLocalUserIsAdministrator) {
+    $issues.Add("The required standard local user '$standardLocalUserName' belongs to the local Administrators group.")
+}
+elseif (-not $standardLocalUserInUsersGroup) {
+    $issues.Add("The required standard local user '$standardLocalUserName' does not belong to the local Users group.")
+}
+elseif (-not $standardLocalUserPasswordNeverExpires) {
+    $issues.Add("The required standard local user '$standardLocalUserName' does not retain its enrollment password.")
+}
+
 $settings = $null
 try {
     $settings = Get-Content -LiteralPath $settingsPath -Raw | ConvertFrom-Json
@@ -207,6 +243,11 @@ $result = [pscustomobject]@{
     LastSignedInUserHidden = $lastSignedInUserHidden
     LocalUserEnumerationDisabled = $localUserEnumerationDisabled
     PasswordProviderPreserved = $passwordProviderPreserved
+    StandardLocalUserPresent = $standardLocalUserPresent
+    StandardLocalUserEnabled = $standardLocalUserEnabled
+    StandardLocalUserIsAdministrator = $standardLocalUserIsAdministrator
+    StandardLocalUserInUsersGroup = $standardLocalUserInUsersGroup
+    StandardLocalUserPasswordNeverExpires = $standardLocalUserPasswordNeverExpires
     SettingsPresent = [bool]$settings
     ClientCertificatePresent = [bool]$clientCertificatePresent
     ServerCertificateTrusted = $serverCertificateTrusted

src/SGU.AuthBroker.Core/Profiles/SguAdministrativeLocationSelection.cs

@@ -0,0 +1,20 @@
+namespace SGU.AuthBroker.Core.Profiles;
+
+public sealed record SguAdministrativeLocationSelection(
+    string? StateId = null,
+    string? MunicipalityId = null,
+    string? NeighborhoodId = null,
+    string? StateName = null,
+    string? MunicipalityName = null,
+    string? NeighborhoodName = null,
+    string? PostalCode = null)
+{
+    public bool HasValues =>
+        StateId is not null ||
+        MunicipalityId is not null ||
+        NeighborhoodId is not null ||
+        StateName is not null ||
+        MunicipalityName is not null ||
+        NeighborhoodName is not null ||
+        PostalCode is not null;
+}

src/SGU.AuthBroker.Core/Profiles/SguProfileParser.cs

@@ -1,6 +1,7 @@
 using System.Net;
 using System.Net.Mail;
 using System.Text;
+using System.Text.Json;
 
 namespace SGU.AuthBroker.Core.Profiles;
 
@@ -102,7 +103,14 @@ public static class SguProfileParser
         return profile.HasValues ? profile : null;
     }
 
-    public static InstitutionalProfile? ParseAdministrativeLocation(string html)
+    public static InstitutionalProfile? ParseAdministrativeLocation(string html) =>
+        ParseAdministrativeLocation(html, null, null, null);
+
+    public static InstitutionalProfile? ParseAdministrativeLocation(
+        string html,
+        SguAdministrativeLocationSelection? selection,
+        string? localitiesJson,
+        string? neighborhoodsJson)
     {
         ArgumentNullException.ThrowIfNull(html);
 
@@ -112,18 +120,79 @@ public static class SguProfileParser
         string? interiorNumber = NormalizeAddressUnit(
             ExtractInputValue(html, AdministrativeInteriorNumberId));
         string? streetLine = BuildAdministrativeStreetLine(street, exteriorNumber, interiorNumber);
-        string? neighborhood = NormalizeTitle(
+        string? neighborhood = NormalizeTitle(FirstNonEmpty(
-            ExtractSelectedOptionText(html, AdministrativeNeighborhoodId),
+            selection?.NeighborhoodName,
-            256);
+            ResolveNeighborhoodName(neighborhoodsJson, selection),
+            ExtractSelectedOptionText(html, AdministrativeNeighborhoodId)), 256);
+        string? city = NormalizeTitle(FirstNonEmpty(
+            selection?.MunicipalityName,
+            ResolveLocalityName(localitiesJson, selection),
+            ExtractSelectedOptionText(html, AdministrativeCityId)), 128);
+        string? state = NormalizeTitle(FirstNonEmpty(
+            selection?.StateName,
+            ExtractOptionTextByValue(html, AdministrativeStateId, selection?.StateId),
+            ExtractSelectedOptionText(html, AdministrativeStateId)), 128);
+        string? postalCode = NormalizePostalCode(FirstNonEmpty(
+            selection?.PostalCode,
+            ExtractInputValue(html, AdministrativePostalCodeId)));
 
         InstitutionalProfile profile = new(
             StreetAddress: BuildStreetAddress(streetLine, neighborhood, null, null),
-            City: NormalizeTitle(ExtractSelectedOptionText(html, AdministrativeCityId), 128),
+            City: city,
-            State: NormalizeTitle(ExtractSelectedOptionText(html, AdministrativeStateId), 128),
+            State: state,
-            PostalCode: NormalizePostalCode(ExtractInputValue(html, AdministrativePostalCodeId)));
+            PostalCode: postalCode);
         return profile.HasValues ? profile : null;
     }
 
+    public static SguAdministrativeLocationSelection? ParseAdministrativeLocationSelection(
+        string json,
+        string? expectedPostalCode)
+    {
+        ArgumentNullException.ThrowIfNull(json);
+
+        string? expected = NormalizePostalCode(expectedPostalCode);
+        try
+        {
+            using JsonDocument document = JsonDocument.Parse(json);
+            if (!TryGetPageMethodArray(document.RootElement, out JsonElement values))
+            {
+                return null;
+            }
+
+            foreach (JsonElement value in values.EnumerateArray())
+            {
+                string? postalCode = NormalizePostalCode(GetJsonString(value, "p_Cp"));
+                if (expected is not null &&
+                    !string.Equals(postalCode, expected, StringComparison.Ordinal))
+                {
+                    continue;
+                }
+
+                SguAdministrativeLocationSelection selection = new(
+                    StateId: NormalizeCatalogId(GetJsonString(value, "p_IdEstado")),
+                    MunicipalityId: NormalizeCatalogId(GetJsonString(value, "p_IdMunicipio")),
+                    NeighborhoodId: NormalizeCatalogId(GetJsonString(value, "p_IdCP")),
+                    StateName: Limit(GetJsonString(value, "p_NombreEstado"), 128),
+                    MunicipalityName: Limit(GetJsonString(value, "p_NombreMunicipio"), 128),
+                    NeighborhoodName: Limit(FirstNonEmpty(
+                        GetJsonString(value, "p_NombreColonia"),
+                        GetJsonString(value, "p_NombreAsentamiento"),
+                        GetJsonString(value, "p_Nombre")), 256),
+                    PostalCode: postalCode);
+                if (selection.HasValues)
+                {
+                    return selection;
+                }
+            }
+        }
+        catch (JsonException)
+        {
+            return null;
+        }
+
+        return null;
+    }
+
     public static InstitutionalProfile? ParseStudent(string html, string expectedStudentNumber)
     {
         ArgumentNullException.ThrowIfNull(html);
@@ -350,6 +419,186 @@ public static class SguProfileParser
         return null;
     }
 
+    private static string? ExtractOptionTextByValue(string html, string id, string? expectedValue)
+    {
+        if (string.IsNullOrWhiteSpace(expectedValue))
+        {
+            return null;
+        }
+
+        string? openingTag = FindOpeningTag(html, "select", id);
+        if (openingTag is null)
+        {
+            return null;
+        }
+
+        int openingTagIndex = html.IndexOf(openingTag, StringComparison.OrdinalIgnoreCase);
+        int contentStart = openingTagIndex + openingTag.Length;
+        int contentEnd = html.IndexOf("</select", contentStart, StringComparison.OrdinalIgnoreCase);
+        if (openingTagIndex < 0 || contentEnd < 0)
+        {
+            return null;
+        }
+
+        string optionsHtml = html[contentStart..contentEnd];
+        int searchFrom = 0;
+        while (searchFrom < optionsHtml.Length)
+        {
+            int optionStart = optionsHtml.IndexOf("<option", searchFrom, StringComparison.OrdinalIgnoreCase);
+            if (optionStart < 0)
+            {
+                break;
+            }
+
+            int optionTagEnd = optionsHtml.IndexOf('>', optionStart);
+            int optionEnd = optionTagEnd < 0
+                ? -1
+                : optionsHtml.IndexOf("</option", optionTagEnd + 1, StringComparison.OrdinalIgnoreCase);
+            if (optionTagEnd < 0 || optionEnd < 0)
+            {
+                break;
+            }
+
+            string optionTag = optionsHtml[optionStart..(optionTagEnd + 1)];
+            string? optionValue = ExtractAttributeValue(optionTag, "value");
+            if (string.Equals(optionValue, expectedValue, StringComparison.Ordinal))
+            {
+                return NormalizeText(optionsHtml[(optionTagEnd + 1)..optionEnd]);
+            }
+
+            searchFrom = optionEnd + "</option".Length;
+        }
+
+        return null;
+    }
+
+    private static string? ResolveLocalityName(
+        string? json,
+        SguAdministrativeLocationSelection? selection)
+    {
+        if (string.IsNullOrWhiteSpace(json) ||
+            string.IsNullOrWhiteSpace(selection?.MunicipalityId))
+        {
+            return null;
+        }
+
+        try
+        {
+            using JsonDocument document = JsonDocument.Parse(json);
+            if (!TryGetPageMethodArray(document.RootElement, out JsonElement values))
+            {
+                return null;
+            }
+
+            foreach (JsonElement value in values.EnumerateArray())
+            {
+                if (string.Equals(
+                        NormalizeCatalogId(GetJsonString(value, "Id_Municipio")),
+                        selection.MunicipalityId,
+                        StringComparison.Ordinal) &&
+                    (selection.StateId is null || string.Equals(
+                        NormalizeCatalogId(GetJsonString(value, "ID_Estado")),
+                        selection.StateId,
+                        StringComparison.Ordinal)))
+                {
+                    return GetJsonString(value, "Nombre");
+                }
+            }
+        }
+        catch (JsonException)
+        {
+            return null;
+        }
+
+        return null;
+    }
+
+    private static string? ResolveNeighborhoodName(
+        string? json,
+        SguAdministrativeLocationSelection? selection)
+    {
+        if (string.IsNullOrWhiteSpace(json) || selection is null)
+        {
+            return null;
+        }
+
+        try
+        {
+            using JsonDocument document = JsonDocument.Parse(json);
+            if (!TryGetPageMethodArray(document.RootElement, out JsonElement values))
+            {
+                return null;
+            }
+
+            List<string> postalCodeMatches = [];
+            foreach (JsonElement value in values.EnumerateArray())
+            {
+                string? neighborhoodId = NormalizeCatalogId(GetJsonString(value, "p_IdCP"));
+                string? postalCode = NormalizePostalCode(GetJsonString(value, "p_Cp"));
+                string? name = GetJsonString(value, "p_Nombre");
+                if (name is null)
+                {
+                    continue;
+                }
+
+                if (selection.NeighborhoodId is not null &&
+                    string.Equals(neighborhoodId, selection.NeighborhoodId, StringComparison.Ordinal))
+                {
+                    return name;
+                }
+
+                if (selection.PostalCode is not null &&
+                    string.Equals(postalCode, selection.PostalCode, StringComparison.Ordinal))
+                {
+                    postalCodeMatches.Add(name);
+                }
+            }
+
+            return postalCodeMatches.Count == 1 ? postalCodeMatches[0] : null;
+        }
+        catch (JsonException)
+        {
+            return null;
+        }
+    }
+
+    private static bool TryGetPageMethodArray(JsonElement root, out JsonElement values)
+    {
+        values = default;
+        return root.ValueKind == JsonValueKind.Object &&
+            root.TryGetProperty("d", out values) &&
+            values.ValueKind == JsonValueKind.Array;
+    }
+
+    private static string? GetJsonString(JsonElement value, string propertyName)
+    {
+        if (value.ValueKind != JsonValueKind.Object ||
+            !value.TryGetProperty(propertyName, out JsonElement property))
+        {
+            return null;
+        }
+
+        return property.ValueKind switch
+        {
+            JsonValueKind.String => property.GetString(),
+            JsonValueKind.Number => property.GetRawText(),
+            _ => null
+        };
+    }
+
+    private static string? NormalizeCatalogId(string? value)
+    {
+        string? candidate = value?.Trim();
+        return string.IsNullOrEmpty(candidate) ||
+            candidate.Length > 32 ||
+            !candidate.All(char.IsAsciiLetterOrDigit)
+            ? null
+            : candidate;
+    }
+
+    private static string? FirstNonEmpty(params string?[] values) =>
+        values.FirstOrDefault(value => !string.IsNullOrWhiteSpace(value));
+
     private static string? FindOpeningTag(string html, string tagName, string id)
         => FindOpeningTagByAttribute(html, tagName, "id", id);
 

src/SGU.AuthBroker/Services/NtlmCredentialValidator.cs

@@ -1,5 +1,7 @@
 using System.Diagnostics;
 using System.Net;
+using System.Text;
+using System.Text.Json;
 using SGU.AuthBroker.Core.Authentication;
 using SGU.AuthBroker.Core.Identity;
 using SGU.AuthBroker.Core.Profiles;
@@ -431,9 +433,6 @@ public sealed class NtlmCredentialValidator : INtlmCredentialValidator
         pages.Add((
             options.AdministrativePersonalProfilePath,
             SguProfileParser.ParseAdministrativePersonal));
-        pages.Add((
-            options.AdministrativeLocationProfilePath,
-            SguProfileParser.ParseAdministrativeLocation));
 
         foreach ((string path, Func<string, InstitutionalProfile?> parser) in pages)
         {
@@ -474,7 +473,7 @@ public sealed class NtlmCredentialValidator : INtlmCredentialValidator
                     "SGU optional staff profile enrichment for role {Role} reached its total timeout after {ElapsedMilliseconds} ms; preserving fields already collected.",
                     identity.Role,
                     elapsed.ElapsedMilliseconds);
-                break;
+                return profile;
             }
             catch (Exception exception)
             {
@@ -487,6 +486,142 @@ public sealed class NtlmCredentialValidator : INtlmCredentialValidator
             }
         }
 
+        return await TryEnrichStaffLocationAsync(
+            client,
+            profile,
+            identity,
+            allowedHosts,
+            timeoutToken,
+            requestCancellationToken,
+            elapsed).ConfigureAwait(false);
+    }
+
+    private async Task<InstitutionalProfile> TryEnrichStaffLocationAsync(
+        HttpClient client,
+        InstitutionalProfile profile,
+        UserIdentity identity,
+        HashSet<string> allowedHosts,
+        CancellationToken timeoutToken,
+        CancellationToken requestCancellationToken,
+        Stopwatch elapsed)
+    {
+        string path = options.AdministrativeLocationProfilePath;
+        Uri locationPageUri = GetProfileUri(path);
+        try
+        {
+            string? html = await TryFetchAdditionalProfilePageAsync(
+                client,
+                locationPageUri,
+                allowedHosts,
+                timeoutToken).ConfigureAwait(false);
+            if (html is null)
+            {
+                logger.LogWarning(
+                    BrokerEventIds.ProfilePageUnavailable,
+                    "Optional SGU profile page {Path} did not return usable HTML for role {Role}; preserving fields already collected.",
+                    path,
+                    identity.Role);
+                return profile;
+            }
+
+            InstitutionalProfile? staticLocation = SguProfileParser.ParseAdministrativeLocation(html);
+            if (staticLocation is null)
+            {
+                logger.LogWarning(
+                    BrokerEventIds.ProfileHtmlUnexpected,
+                    "Optional SGU profile page {Path} returned HTML without its supported field IDs for role {Role}; preserving fields already collected.",
+                    path,
+                    identity.Role);
+                return profile;
+            }
+
+            profile = profile.Overlay(staticLocation);
+            if (string.IsNullOrWhiteSpace(staticLocation.PostalCode))
+            {
+                return profile;
+            }
+
+            string? directionJson = await TryPostProfilePageMethodAsync(
+                client,
+                GetAdministrativeLocationMethodUri("GetDireccion"),
+                locationPageUri,
+                new Dictionary<string, string>
+                {
+                    ["CodigoPostal"] = staticLocation.PostalCode
+                },
+                allowedHosts,
+                timeoutToken).ConfigureAwait(false);
+            if (directionJson is null)
+            {
+                return profile;
+            }
+
+            SguAdministrativeLocationSelection? selection =
+                SguProfileParser.ParseAdministrativeLocationSelection(
+                    directionJson,
+                    staticLocation.PostalCode);
+            if (selection is null)
+            {
+                logger.LogWarning(
+                    BrokerEventIds.ProfileHtmlUnexpected,
+                    "SGU location method GetDireccion returned an unexpected payload for role {Role}; preserving the static address fields.",
+                    identity.Role);
+                return profile;
+            }
+
+            string? localitiesJson = null;
+            if (!string.IsNullOrWhiteSpace(selection.StateId))
+            {
+                localitiesJson = await TryPostProfilePageMethodAsync(
+                    client,
+                    GetAdministrativeLocationMethodUri("GetLocalidadListado"),
+                    locationPageUri,
+                    new Dictionary<string, string>
+                    {
+                        ["pIdEstado"] = selection.StateId
+                    },
+                    allowedHosts,
+                    timeoutToken).ConfigureAwait(false);
+            }
+
+            string? neighborhoodsJson = await TryPostProfilePageMethodAsync(
+                client,
+                GetAdministrativeLocationMethodUri("GetColoniasListado"),
+                locationPageUri,
+                new Dictionary<string, string>
+                {
+                    ["pIdEstado"] = string.Empty,
+                    ["pLocalidad"] = string.Empty,
+                    ["CodigoPostal"] = selection.PostalCode ?? staticLocation.PostalCode
+                },
+                allowedHosts,
+                timeoutToken).ConfigureAwait(false);
+
+            InstitutionalProfile? resolvedLocation = SguProfileParser.ParseAdministrativeLocation(
+                html,
+                selection,
+                localitiesJson,
+                neighborhoodsJson);
+            return profile.Overlay(resolvedLocation);
+        }
+        catch (OperationCanceledException) when (!requestCancellationToken.IsCancellationRequested)
+        {
+            logger.LogWarning(
+                BrokerEventIds.ProfileEnrichmentTimeout,
+                "SGU optional staff location enrichment for role {Role} reached its total timeout after {ElapsedMilliseconds} ms; preserving fields already collected.",
+                identity.Role,
+                elapsed.ElapsedMilliseconds);
+        }
+        catch (Exception exception)
+        {
+            logger.LogWarning(
+                BrokerEventIds.ProfileEnrichmentFailure,
+                exception,
+                "SGU optional staff location enrichment failed for role {Role} after {ElapsedMilliseconds} ms; preserving fields already collected.",
+                identity.Role,
+                elapsed.ElapsedMilliseconds);
+        }
+
         return profile;
     }
 
@@ -545,6 +680,46 @@ public sealed class NtlmCredentialValidator : INtlmCredentialValidator
         return null;
     }
 
+    private async Task<string?> TryPostProfilePageMethodAsync(
+        HttpClient client,
+        Uri requestedUri,
+        Uri referrerUri,
+        IReadOnlyDictionary<string, string> payload,
+        HashSet<string> allowedHosts,
+        CancellationToken cancellationToken)
+    {
+        if (!IsAllowedHttpsUri(requestedUri, allowedHosts) ||
+            !IsAllowedHttpsUri(referrerUri, allowedHosts))
+        {
+            return null;
+        }
+
+        using HttpRequestMessage request = new(HttpMethod.Post, requestedUri);
+        request.Headers.Referrer = referrerUri;
+        request.Content = new StringContent(
+            JsonSerializer.Serialize(payload),
+            Encoding.UTF8,
+            "application/json");
+        using HttpResponseMessage response = await client
+            .SendAsync(request, HttpCompletionOption.ResponseHeadersRead, cancellationToken)
+            .ConfigureAwait(false);
+        int statusCode = (int)response.StatusCode;
+        if (statusCode is >= 200 and < 300)
+        {
+            return await ReadLimitedStringAsync(
+                response.Content,
+                options.MaxProfileBytes,
+                cancellationToken).ConfigureAwait(false);
+        }
+
+        logger.LogWarning(
+            BrokerEventIds.ProfilePageUnavailable,
+            "Optional SGU profile method {Path} returned HTTP {StatusCode}.",
+            requestedUri.AbsolutePath,
+            statusCode);
+        return null;
+    }
+
     private static void AddCredential(
         Uri uri,
         CredentialCache credentialCache,
@@ -658,6 +833,12 @@ public sealed class NtlmCredentialValidator : INtlmCredentialValidator
     private Uri GetProfileUri(string path) =>
         new(new Uri(options.Endpoint, UriKind.Absolute), path);
 
+    private Uri GetAdministrativeLocationMethodUri(string methodName)
+    {
+        Uri pageUri = GetProfileUri(options.AdministrativeLocationProfilePath);
+        return new Uri($"{pageUri.GetLeftPart(UriPartial.Path).TrimEnd('/')}/{methodName}");
+    }
+
     private async Task<InstitutionalProfile?> TryReadProfileAsync(
         HttpResponseMessage response,
         UserIdentity identity,

tests/SGU.AuthBroker.Core.Tests/SguProfileParserTests.cs

@@ -228,6 +228,65 @@ public sealed class SguProfileParserTests
         Assert.Null(profile.Email);
     }
 
+    [Fact]
+    public void ResolvesAdministrativeAddressFromPageMethodIdentifiers()
+    {
+        const string html = """
+            <html><body>
+              <input id='ctl00_contenedor_txtCalle' value='RETORNO 1, SUR 16' />
+              <input id='ctl00_contenedor_txtNoExt' value='74' />
+              <input id='ctl00_contenedor_txtNoInt' value='' />
+              <input id='ctl00_contenedor_txtCP' value='08500' />
+              <select id='ctl00_contenedor_ddlEstado'>
+                <option selected='selected' value='0'>Seleccione...</option>
+                <option value='09'>CIUDAD DE MÉXICO</option>
+              </select>
+              <select id='ctl00_contenedor_ddlLocalidad'>
+                <option selected='selected' value='0'>Seleccione alguna localidad...</option>
+              </select>
+              <select id='ctl00_contenedor_ddlColonia'>
+                <option selected='selected' value='0,0'>Seleccione alguna colonia...</option>
+              </select>
+            </body></html>
+            """;
+        const string directionJson = """
+            {"d":[{"p_IdCP":"091263","p_IdEstado":"09","p_NombreEstado":"","p_IdMunicipio":"006","p_NombreMunicipio":"","p_NombreColonia":"","p_Cp":"08500"}]}
+            """;
+        const string localitiesJson = """
+            {"d":[{"ID_Estado":"09","Id_Municipio":"002","Nombre":"AZCAPOTZALCO"},{"ID_Estado":"09","Id_Municipio":"006","Nombre":"IZTACALCO"}]}
+            """;
+        const string neighborhoodsJson = """
+            {"d":[{"p_IdCP":"091263","p_Nombre":"AGRÍCOLA ORIENTAL","p_Cp":"08500"}]}
+            """;
+
+        SguAdministrativeLocationSelection? selection =
+            SguProfileParser.ParseAdministrativeLocationSelection(directionJson, "08500");
+        InstitutionalProfile? profile = SguProfileParser.ParseAdministrativeLocation(
+            html,
+            selection,
+            localitiesJson,
+            neighborhoodsJson);
+
+        Assert.NotNull(selection);
+        Assert.Equal("09", selection.StateId);
+        Assert.Equal("006", selection.MunicipalityId);
+        Assert.Equal("091263", selection.NeighborhoodId);
+        Assert.NotNull(profile);
+        Assert.Equal("Retorno 1, Sur 16 74\r\nAgrícola Oriental", profile.StreetAddress);
+        Assert.Equal("Iztacalco", profile.City);
+        Assert.Equal("Ciudad de México", profile.State);
+        Assert.Equal("08500", profile.PostalCode);
+    }
+
+    [Theory]
+    [InlineData("not-json")]
+    [InlineData("{\"d\":{}}")]
+    [InlineData("{\"d\":[]}")]
+    public void RejectsUnexpectedAdministrativeLocationPayloads(string json)
+    {
+        Assert.Null(SguProfileParser.ParseAdministrativeLocationSelection(json, "08500"));
+    }
+
     [Fact]
     public void AdministrativePagesOverlayTheVerifiedIncidentsProfile()
     {

tests/SGU.AuthBroker.Tests/NtlmCredentialValidatorTests.cs

@@ -145,14 +145,24 @@ public sealed class NtlmCredentialValidatorTests
                 <input id="ctl00_contenedor_txtNoExt" value="15" />
                 <input id="ctl00_contenedor_txtCP" value="01000" />
                 <select id="ctl00_contenedor_ddlEstado">
-                  <option selected="selected">CIUDAD DE MÉXICO</option>
+                  <option selected="selected" value="0">Seleccione...</option>
+                  <option value="09">CIUDAD DE MÉXICO</option>
                 </select>
                 <select id="ctl00_contenedor_ddlLocalidad">
-                  <option selected="selected">ÁLVARO OBREGÓN</option>
+                  <option selected="selected" value="0">Seleccione alguna localidad...</option>
                 </select>
                 <select id="ctl00_contenedor_ddlColonia">
-                  <option>FLORIDA</option>
+                  <option selected="selected" value="0,0">Seleccione alguna colonia...</option>
                 </select>
+                """),
+            JsonResponse("""
+                {"d":[{"p_IdCP":"090001","p_IdEstado":"09","p_NombreEstado":"","p_IdMunicipio":"010","p_NombreMunicipio":"","p_NombreColonia":"FLORIDA","p_Cp":"01000"}]}
+                """),
+            JsonResponse("""
+                {"d":[{"ID_Estado":"09","Id_Municipio":"010","Nombre":"ÁLVARO OBREGÓN"}]}
+                """),
+            JsonResponse("""
+                {"d":[{"p_IdCP":"090001","p_Nombre":"FLORIDA","p_Cp":"01000"}]}
                 """));
         NtlmCredentialValidator validator = CreateValidator(handler);
 
@@ -180,9 +190,17 @@ public sealed class NtlmCredentialValidatorTests
                 "/psulsa/",
                 "/psulsa/gadmon/capitalhumano/controlincidencias/incidencias.aspx",
                 "/psulsa/gadmon/capitalhumano/datos/personales.aspx",
-                "/psulsa/gadmon/capitalhumano/datos/ubicacion.aspx"
+                "/psulsa/gadmon/capitalhumano/datos/ubicacion.aspx",
+                "/psulsa/gadmon/capitalhumano/datos/ubicacion.aspx/GetDireccion",
+                "/psulsa/gadmon/capitalhumano/datos/ubicacion.aspx/GetLocalidadListado",
+                "/psulsa/gadmon/capitalhumano/datos/ubicacion.aspx/GetColoniasListado"
             ],
             handler.RequestPaths);
+        Assert.Equal("{\"CodigoPostal\":\"01000\"}", handler.RequestBodies[5]);
+        Assert.Equal("{\"pIdEstado\":\"09\"}", handler.RequestBodies[6]);
+        Assert.Equal(
+            "{\"pIdEstado\":\"\",\"pLocalidad\":\"\",\"CodigoPostal\":\"01000\"}",
+            handler.RequestBodies[7]);
     }
 
     [Fact]
@@ -242,14 +260,24 @@ public sealed class NtlmCredentialValidatorTests
                 <input id="ctl00_contenedor_txtNoExt" value="15" />
                 <input id="ctl00_contenedor_txtCP" value="01000" />
                 <select id="ctl00_contenedor_ddlEstado">
-                  <option selected="selected">CIUDAD DE MÉXICO</option>
+                  <option selected="selected" value="0">Seleccione...</option>
+                  <option value="09">CIUDAD DE MÉXICO</option>
                 </select>
                 <select id="ctl00_contenedor_ddlLocalidad">
-                  <option selected="selected">ÁLVARO OBREGÓN</option>
+                  <option selected="selected" value="0">Seleccione alguna localidad...</option>
                 </select>
                 <select id="ctl00_contenedor_ddlColonia">
-                  <option selected="selected">FLORIDA</option>
+                  <option selected="selected" value="0,0">Seleccione alguna colonia...</option>
                 </select>
+                """),
+            JsonResponse("""
+                {"d":[{"p_IdCP":"090001","p_IdEstado":"09","p_NombreEstado":"","p_IdMunicipio":"010","p_NombreMunicipio":"","p_NombreColonia":"FLORIDA","p_Cp":"01000"}]}
+                """),
+            JsonResponse("""
+                {"d":[{"ID_Estado":"09","Id_Municipio":"010","Nombre":"ÁLVARO OBREGÓN"}]}
+                """),
+            JsonResponse("""
+                {"d":[{"p_IdCP":"090001","p_Nombre":"FLORIDA","p_Cp":"01000"}]}
                 """));
         NtlmCredentialValidator validator = CreateValidator(handler);
 
@@ -280,7 +308,10 @@ public sealed class NtlmCredentialValidatorTests
                 "/psulsa/menu.aspx",
                 "/psulsa/gadmon/nomina/consultanomina.aspx",
                 "/psulsa/gadmon/capitalhumano/datos/personales.aspx",
-                "/psulsa/gadmon/capitalhumano/datos/ubicacion.aspx"
+                "/psulsa/gadmon/capitalhumano/datos/ubicacion.aspx",
+                "/psulsa/gadmon/capitalhumano/datos/ubicacion.aspx/GetDireccion",
+                "/psulsa/gadmon/capitalhumano/datos/ubicacion.aspx/GetLocalidadListado",
+                "/psulsa/gadmon/capitalhumano/datos/ubicacion.aspx/GetColoniasListado"
             ],
             handler.RequestPaths);
     }
@@ -363,18 +394,29 @@ public sealed class NtlmCredentialValidatorTests
             Content = new StringContent(content)
         };
 
+    private static HttpResponseMessage JsonResponse(string content) =>
+        new(HttpStatusCode.OK)
+        {
+            Content = new StringContent(content, null, "application/json")
+        };
+
     private sealed class SequenceHandler(params HttpResponseMessage[] responses) : HttpMessageHandler
     {
         private readonly Queue<HttpResponseMessage> responses = new(responses);
 
         public List<string> RequestPaths { get; } = [];
 
+        public List<string?> RequestBodies { get; } = [];
+
         protected override Task<HttpResponseMessage> SendAsync(
             HttpRequestMessage request,
             CancellationToken cancellationToken)
         {
             cancellationToken.ThrowIfCancellationRequested();
             RequestPaths.Add(request.RequestUri!.AbsolutePath);
+            RequestBodies.Add(request.Content is null
+                ? null
+                : request.Content.ReadAsStringAsync(cancellationToken).GetAwaiter().GetResult());
             if (responses.Count == 0)
             {
                 throw new InvalidOperationException("The validator sent more requests than expected.");