mRr3b00t’s pentest 101 draft notebook

I love sharing content, ideas, thoughts, theories and hopefully some of the things i’ve picked up along my career so far! I imagine most people wouldn’t say I had a traditional approach to consulting and my content sharing approach is generally quite simmilar, so in a mad moment a week ago I decided to see if I could go through the Comptia Pentest+ course. Why did I decide to do this you ask! Well that’s a bit more complex…

CTF

Learn all the things!

Many of you will know I’m a massive fan of learning all the things, but also I’m a huge fan of sharing intel, knowledge and experiances because I know when you are starting in a field, the world can seem too big to know things! So to this end, I’ve put together a quick list of tools that I believe are required you have some knowledge of for the PenTest+.

Where possible links to tools and download locations have been provided. Clearly you can deploy a security testing distro such as Kali Linux, Parrot etc. buy you may want to simply install Ubunt or use Windows and WSL 2. Read more “Learn all the things!” →

Defense

17 Remote Code Execution Vulnerabilities in this month’s patch…

Windows DNS Server

This is really a major issues for Active Directory Domain Controllers.
CVE-2020-1350 : https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1350

We can see there are 2,133 servers on Shodan that are exposed however this exploit doesn’t rely on exposure, a client request from inside the network to a malicious DNS server could be used to exploit the domain controller. Read more “17 Remote Code Execution Vulnerabilities in this month’s patch Tuesday release!” →

Defense

Perimeter Security Vendor Hell – Unauthenticated RCE’s and other…

Disclaimer

If your can’t take an honest view on real challegnes we face you probably want to click the back button now!
The three laws of IT apply:

Software has bugs
Hardware breaks
Humans Make Mistakes

It doens’t mean however we shoulnd’t strive to do better! so now that’s out of the way here’s a fast blog on shit you should care about and patch (if you haven’t already!)

Also please note these are not ALL the vulnerabilities you should care about, just some choice ones that are enough to make you cry!

Introduction

“Don’t worry, we’ve got that behind a firewall or VPN!” is something I’ve heard a lot over the years, which to be honest is starting to look more and more worrying. Think that’s just me giving my opinion? Well think again, here we have collated SOME of the vulnerabilities in security products which if unpatched/mitigated really leave you. well quite insecure!

Defense

Configuring SYSLOG integration with F5 BIG-IP

CVE-2020-5902 Defensive Guidance (FAST publish)

This week’s been a whirlwind, once again teams of people scrambled to help defend networks from criminals trying to abuse CVE-2020-5902.

If you want to see this in action check out my video on youtube!

The main issue (other than the vulnerability itself (path traversal and unauthenticated remote code execution) is exposing management interfaces to the internet (or other insecure/untrusted networks). Yesterday we looked at IOCs in the “/var/log/audit” file.

Now a sensible attacker who has ROOT level access would have likely cleared their tracks! However, a good sysadmin would have the logs shipped off the device!

Defense

Hunting a breach… CVE-2020-5902

I’ve spent the last 24 hours (including a sleeps) gathering intel, testing in the lab and looking at what the path traversal and RCE for the F5 BIG-IP as outlined in CVE-2020-5902 looks like.
Well I’ll be honest.. the whole scenario is a bit of a bloody mess! We’ve got people leaving management interfaces exposed to the internet, we’ve got a vulnerability that’s incredibly old in a security appliance (it’s not exactly uber 1337 either) and we’ve had the release scenario that’s probably ruined peoples weekends and weeks (I’m not going into an Offensive Securitry Tools debate/argument, if you want that go talk to a brick wall or someone else!)

Guides

If I had to go and find a job

Some background

I’m in a very fortunate position (currently) whereby I have not had to look for a ‘job’ since I was much younger. I do however remember what a soul crushing experience that used to be. I’d send emails, I’d write letters, eventually after stone walls of silence and rejections because of not enough experience or qualifications. I just remember job hunting as a depressing experience and I can’t really imagine that’s changed a great deal over time!

When I was younger, I was a year ahead of myself in school (due to the event of not dying and going to a very lovely first school). I was never very academic when I was younger, but I loved games and I learnt very quickly (this was with our first Amstrad) that I loved computers and wasn’t too shabby with them.

Defense

KB4551762 (CVE-2020-0796)

A recent information disclosure by Microsoft revealed there is a remote code execution vulneability in the SMB3 services (client and server). This vulnerability could be leveraged in a simmilar manner to MSBLASTER/NACHI/WannaCry etc.

This is a CRITICAL vulnerability, yet currently there are no reports of this being exploite in the wild (epect that the change in the near future)

Defense

Internet Presence Technology and Security Management

Living on the internet in the digital age

I have watched enough technology deployments occur over the last 20 years to have learnt a thing or two. One constant I find is the perception that deploying and technology in a business environment is ‘simple and easy’. However, history and experience teach us that this simply isn’t the case. Whilst working on a project recently I thought I would try and show this in terms of looking at foundational technology and security management capabilities regarding internet presence. In this post I’m going to outline a look at foundational capabilities for Domain Registrar, DNS and internet preens management. Read more “Internet Presence Technology and Security Management” →

Defense

Active Directory Security: Securing the crown jewels with PingCastle…

Securing the crown jewels

At the heart of most organisations are a Windows server active directory domain (or multiple of these), yet one of the most common findings when we review organisations security postures are there are significant weaknesses in their active directory deployments, both from an architectural, operational and security perspectives.

Active directory provides a range of functionality to organisations, from authentication, authorisation as well as supporting services such as printer and share listing, DNS, people/information lookups and integration for 3^rd party services. It’s the very hub that links most modern networked systems together and now it’s expanded beyond the corporate walls into the cloud with integration into Azure Directory Services as part of Azure or Office 365.

Essentially Active Directory can be considered a castle whereby crown jewels are held! This may be in the form of credentials/identity or by nature of granting access to business systems that hold sensitive data (such as using AD integration to log into an HR or Finance system). Read more “Active Directory Security: Securing the crown jewels with PingCastle 2.8.0.0” →