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Pentesting Methodology

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Pentesting Methodology

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0- Physical Attacks

Do you have physical access to the machine that you want to attack? You should read some tricks about physical attacks and others about escaping from GUI applications.

1 - Discovering hosts inside the network / Discovering Assets of the company

Depending if the test you are perform is an internal or external test you may be interested on finding hosts inside the company network (internal test) or finding assets of the company on the internet (external test).

{% hint style="info" %} Note that if you are performing an external test, once you manage to obtain access to the internal network of the company you should re-start this guide. {% endhint %}

2- Having Fun with the network (Internal)

This section only applies if you are performing an internal test.
Before attacking a host maybe you prefer to steal some credentials from the network or sniff some data to learn passively/actively(MitM) what can you find inside the network. You can read Pentesting Network.

3- Port Scan - Service discovery

The first thing to do when looking for vulnerabilities in a host is to know which services are running in which ports. Let's see the basic tools to scan ports of hosts.

4- Searching service version exploits

Once you know which services are running, and maybe their version, you have to search for known vulnerabilities. Maybe you get lucky and there is a exploit to give you a shell...

5- Pentesting Services

If there isn't any fancy exploit for any running service, you should look for common misconfigurations in each service running.

Inside this book you will find a guide to pentest the most common services (and others that aren't so common). Please, search in the left index the PENTESTING section (the services are ordered by their default ports).

I want to make a special mention of the Pentesting Web part (as it is the most extensive one).
Also, a small guide on how to find known vulnerabilities in software can be found here.

If your service is not inside the index, search in Google for other tutorials and let me know if you want me to add it. If you can't find anything in Google, perform your own blind pentesting, you could start by connecting to the service, fuzzing it and reading the responses (if any).

5.1 Automatic Tools

There are also several tools that can perform automatic vulnerabilities assessments. I would recommend you to try Legion, which is the tool that I have created and it's based on the notes about pentesting services that you can find in this book.

5.2 Brute-Forcing services

In some scenarios a Brute-Force could be useful to compromise a service. Find here a CheatSheet of different services brute forcing.

6- Phishing

If at this point you haven't found any interesting vulnerability you may need to try some phishing in order to get inside the network. You can read my phishing methodology here:

7- Getting Shell

Somehow you should have found some way to execute code in the victim. Then, a list of possible tools inside the system that you can use to get a reverse shell would be very useful.

Specially in Windows you could need some help to avoid antiviruses: Check this page.\

8- Inside

If you have troubles with the shell, you can find here a small compilation of the most useful commands for pentesters:

9 - Exfiltration

You will probably need to extract some data from the victim or even introduce something (like privilege escalation scripts). Here you have a post about common tools that you can use with these purposes.

10- Privilege Escalation

10.1- Local Privesc

If you are not root/Administrator inside the box, you should find a way to escalate privileges.
Here you can find a guide to escalate privileges locally in Linux and in Windows.
You should also check this pages about how does Windows work:

Don't forget to checkout the best tools to enumerate Windows and Linux local Privilege Escalation paths: Suite PEAS

10.2- Domain Privesc

Here you can find a methodology explaining the most common actions to enumerate, escalate privileges and persist on an Active Directory. Even if this is just a subsection of a section, this process could be extremely delicate on a Pentesting/Red Team assignment.

11 - POST

11.1 - Looting

Check if you can find more passwords inside the host or if you have access to other machines with the privileges of your user.
Find here different ways to dump passwords in Windows.

11.2 - Persistence

Use 2 o 3 different types of persistence mechanism so you won't need to exploit the system again.
Here you can find some persistence tricks on active directory.

TODO: Complete persistence Post in Windows & Linux

12 - Pivoting

With the gathered credentials you could have access to other machines, or maybe you need to discover and scan new hosts (start the Pentesting Methodology again) inside new networks where your victim is connected.
In this case tunnelling could be necessary. Here you can find a post talking about tunnelling.
You definitely should also check the post about Active Directory pentesting Methodology. There you will find cool tricks to move laterally, escalate privileges and dump credentials.
Check also the page about NTLM, it could be very useful to pivot on Windows environments..

MORE

Android Applications

Exploiting

Basic Python

Crypto tricks

If you are interested in hacking career and hack the unhackable - we are hiring! (fluent polish written and spoken required).

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Learn AWS hacking from zero to hero with htARTE (HackTricks AWS Red Team Expert)!

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