Gaining Access Archives - Page 3 of 4

Posted on April 24, 2022December 23, 2023 by kanishka10

ms08-067 exploitation to hack Windows XP

Hello aspiring ethical hackers. In this article, we will see how to exploit ms08-067 vulnerability to hack Windows XP. As our readers may already know by now, ms08-067 is a vulnerability in Windows 2000, Windows Server 2003 and Windows XP. It is a critical vulnerability that allows remote code execution on the target Windows system by sending a specially crafted RPC request to it.

This vulnerability doesn’t require any authentication or even user interaction on the target side. That’s the reason why it is ubiquitous in any ethical hacking course. We have exploited this vulnerability recently in our February 2021 Issue. But that was done using without Metasploit.

In this article, we will do this with Metasploit. For this, we have chosen our target as Windows XP SP2 and our Attacker system as Kali Linux. Most of the Antivirus ended their support to Windows XP SP2 (Windows XP SP3 is the minimum supported version. Even Real world systems running Windows XP SP2 are running without Anti Virus.)

So Nmap scan revealed a Windows target as shown below.

Start Metasploit and load the ms08_067 module.

Set all the required options and use check command to see if the target is indeed vulnerable.

The target is indeed vulnerable. Now, execute the module as shown below.

As readers can see, we successfully got a meterpreter session with SYSTEM privileges.

Posted on January 13, 2018August 22, 2023 by kanishka10

Linux Configuration Enumeration POST Exploit

Hello aspiring hackers. Today we will learn about Linux Configuration Enumeration POST Exploit. After getting a successful meterpreter session on the target Linux system (as shown here), the next logical step is to perform some enumeration on the target Linux machine. Metasploit has many POST exploits corresponding to Linux enumeration.

The first module we will see is Linux configuration enumeration. The enum_configs module is used to collect information from the configuration files found of applications commonly installed in the system. These applications may include Apache, Nginx, Snort, MySQL, Samba, Sendmail, sysctl, cups, lampp and SNMP etc. This POST module searches for a config file in the application’s default path and if the application exists on the target system, the module will download the files and store it.

If the application doesn’t exist or the config file is moved from its default location, this module will display the “file not found” message. (Just like any POST exploit or as shown in the shell_to_meterpreter exploit, we need to background the current session and load the POST module as shown above. Then set the session id and run the exploit). Here is the enum configs module in action as shown below.

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Posted on November 5, 2017February 27, 2024 by kanishka10 — 1 Comment

Hack Remote PC with Git Submodule

Hello aspiring hackers. In this howto, we will learn how to hack remote PC with Git Submodule. If you are a developer, cyber security enthusiast or at least a computer user, you should have definitely used (or heard about) Github. Git is an open source version control system developed by none other than the awesome Linus Trovalds (yes the same guy who created Linux).

It is a system designed to keep in touch with constant changes made to the code of software by developers. GitHub is a popular hub where developers store their projects and network with like minded people. Github stores information in a data structure called a repository. The particular module exploits a vulnerability in Git submodule.

Git submodules allow users to attach an external repository inside another repository at a specific path. This vulnerability in the Git submodule can be exploited by an attacker who can change the URL of a sub- module in a repository. This URL in the submodule can be changed to point towards a malicious link.

This module is a local exploit and works on Git versions 2.7.5 and lower. Now let us see how this module works. Start Metasploit and load the exploit as shown below. Type command “show options” to see all the options we need for this module to run.

First, we need to configure the malicious Git server. Set the options : LHOST, git_uri and Iport options as shown below. The git_uri option sets the malicious git submodule. Use command “run” to start our Git server. As the user git clones from our URL, we will get a command session on the target.

Now we need to send this malicious Git url to our intended victims. Probably it should be set as a software to convince the users to clone into their machine. Here we are testing this on KaIi Linux 2016 machine which has the vulnerable version of Git installed. We need to instruct the user to update the submodule just cloned. Let us see what happens on the victim machine.

As this happens in our victim system, we will already get a command shell on our attacker system as shown below.

We can see the active sessions using the command “sessions”.

That is how we hack remote pc with Git Submodule.

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Posted on January 27, 2017December 24, 2024 by kanishka10 — 2 Comments

HTA attack for beginners

Hello aspiring hackers. In our previous blogpost, you learnt about Windows hacking. In this article, you will learn about HTA attack, an attack that helps in gaining access to Windows systems. In this attack, HTA file are used to hack the target system.

What is a HTA file?

What is HTA file? HTA stands for HTML application. An HTML Application (HTA) is a Microsoft Windows program whose source code consists of HTML, Dynamic HTML and one or more scripting languages supported by Internet Explorer, such as VBScript or JScript. A HTA file gets executed without the constraints of the internet browser security model. In simple words, it gets executed as a “fully trusted” application.

Let’s see an example of how to create this attack. For this, we will be using Metasploit’s windows/misc/hta_server module. In this module, the server hosts a HTA file, which when opened on the target system, will execute a payload via PowerShell. Of course, the browser warns the user before executing the payload. But social engineering can be used to convince the target users to execute the HTA file.

Now let’s see how this attack works. We will use this exploit to gain access to Windows 10 target. Start Metasploit and load the module as shown below.

Set the reverse meterpreter payload.

Type command “show options” to see the options we need to set for this exploit. Set the required options and type command “run” to start the exploit.

Image explaining about usage of hta web server exploit

As you can see, it has generated an URL where the payload is being hosted. We need to make the target user click on this URL. When the target user clicks on this URL as shown below.

The browser opens and prompts a warning about the file as shown below.

When the user ignores the warning and clicks on “run”, a meterpreter session is opened as shown below.

This session can be viewed and opened as shown below.

That’s how HTA attack works.

Posted on August 27, 2016November 25, 2024 by kanishka10

Beginners guide to Hercules Framework

Hello, aspiring ethical hackers. In our previous blogpost, you learnt what are payload generators. In this blogpost, you will learn about a payload generator that enables you bypass Antivirus on the target system. This is Hercules framework. HERCULES is a customizable payload generator that can bypass antivirus software. Let’s see how it works.

Let’s start by cloning Hercules framework from github as shown below.

After cloning, a new directory with name HERCULES will be created. Move into that directory and do a “ls”. We should see a file named “Setup”. First change the permissions of this file using chmod as shown below. Once we get execute permissions on the Setup file, execute the file using command “./Setup“.

The setup automatically installs Hercules as shown below and

successfully ends as shown below. You have successfully installed Hercules framework in Kali Linux.

Type command “HERCULES” to start the framework. It’s interface looks like below. In this part, let’s generate a payload. Enter option “1”.

Image explaining about the usage of Hercules Framework for Windows exploitation

Select what type of payload you want to create. There are four payloads as shown below. I am choosing the first one. You can choose appropriately.

After we select the type of payload we want to create, we need to enter some options. Let us see the options it provides. LHOST and LPORT are self explanatory. Choosing Persistence function adds our running binary to Windows startup registry so that we can have persistent access to the target. Since we have already know how to create a persistent backdoor we will not enable it here.

Migration function triggers a loop that tries to migrate to a remote process. UPX ( Ultimate Packer for executables ) is an open source executable packer. To those newbies who have no idea what packers are, they are used to compress the executables. Software vendors also use them to obfuscate the code. We will see more about packers in our future howtos.

Concerning this howto, remember that enabling migration, persistence and UPX functions may increase the chances of your payload being detected by Antivirus.

Here I have only enabled the UPX function so the packing process begins as shown below.

Once the packing process is over, your final binary file is stored with the name you have given to it. I named it as “res”.

Next start the listener on Metasploit as shown below and send the binary file to our target. Once he clicks on our executable file, we will get the meterpreter session as shown below.

That’s how we use Hercules for generating Fully UnDetectable (FUD) payloads. Learn how to create FUD payloads using Veil Framework.

Category: Gaining Access