Guides
How long should you test brute force password attempts for?
Well, a recent Microsoft report showed the average RDP brute force attack over the internet lasted about 3 days. Now let’s take a look at what a single attacker machine (IP) can send to a single target server over a well-connected network (1GBE low latency):
Read more “I AM BRUTE”
CTF
Pwning a legacy server on Hack the Box is good for a training exercise however what about if we want to think about how to use resrouces for red and blue. Looking at both sides of the coin when thinking about offense really should help people undesrand how to defend better. In the end of the day outside of a tiny tiny fraction of deployment types, you are going to need to be able to explain how to defend regardless of engagement type (vulnerability assessment, penetration test, purple team, red team etc.)
I’m not going to talk through every step but here’s the commands you would need to run:
Read more “Using CTFs for offensive and defensive training – Purple Teaming”
Hacking
I haven’t had tea but I was thinking about the MAC i was remoting into and I suddenly thought.. I wonder how to crack the hashes from a MAC. Surely it’s just cat /etc/passwd and cat /etc/shadow and then unshadow and run hashcat right?
WRONG!
The hashes for local users are stored here:
Read more “Hash Cracking for Modern OS X (10.8+)”
Hacking
When you gain access to a target node you will want to explore, the exact method you use to do this will depend upon operational security considerations, time constraints and style. You will be looking for a range of elements to support progressing an objective.
It should be noted that the objective may NOT require elevation. You may be trying to obtain data and access might already be possible using the context you have assumed.
You also may need to move from a www-data user to a named user account or get to root level of access. If so there’s a range of questions we should be asking ourselves:
Read more “Linux Privilege Escalation”
Guides
Checking an environment configuration is one of those things where it’s easy to say and harder to do. If we take the cyber essentials standard and look at the requirements, they are quite different from say the CIS baselines. This alone makes for some fun, let’s investigate this further:
CIS baselines are based on a specific component e.g., Windows Server or Windows client and is contextually aware of roles: e.g., Domain Controller vs Member Server.
Is this registry key set?
Read more “Measuring Cyber Essentials: Windows Security Configuration”
Defence
Spotted on twitter (thanks Danny!):
CISA updates the known exploited vulnerabilities list (KEV) yesterday with another 38 updates!
That means an update is required for OFFESNIVE KEV!
Read more “Offensive KEV Updates! CISA releases 38 more CVEs to KEV”
Threat Intel
When running honeypots you never have to wait too long for something to drop!
This moring we had a new hit in the pot, so I decided to invesigate but also to blog and show how we could go about investigating the logs and paylods etc.
Read more “Learn to SOC: Java Webshell via confluence”
Hacking
TLDR: If you have been hunting for privescs before you will know it’s normally not a fast task, you will have a shed ton of data to look at. Sure WINPEAS is good but it’s not a silver bullet.
Here is a really small script which focuses on system administration files/scripts, scheduled tasks and scheduled task history to help you hunt for weaknesses:
Read more “Priviledge Escalation Hunting – Scheduled Tasks and Scripts”
Education
There’s thousand of vulnerabilities, but do you ever struggle work out what ones might actually be useful to you if you are defending or attacking?
Well don’t worry I’ve started to document some things that might help you both attack and defend in CYBERSPACE!
Read more “PWNDEFND: Known Exploitable Vulnerabilities (KEV) – AKA: Offensive KEV”
Guides
Have you ever tried to SSH into a server and revieved the following error?
Well that’s probably becuase you are using a bit of kit with legacy software or firmware.
Then when you try to SSH and you add diffie-hellman-group1-sh1 you get the following back?
Read more “SSH oh MY: no matching key exchange method found. Their offer: diffie-hellman-group1-sha1”