- MS EternalBlue SMB Remote Windows Kernel Pool Corruption

Thursday, September 1, 2022

- MS EternalBlue SMB Remote Windows Kernel Pool Corruption

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Windows server 2016 standard 14393 metasploit free -

How to Exploit EternalBlue on Windows Server with Metasploit « Null Byte :: WonderHowTo

This can allow an attacker to create a directory junction between a directory they have access to and another directory that they should not have access to, thereby granting them the ability to plant files in sensitive locations and or read sensitive files. Sign up for stahdard to join this windows server 2016 standard 14393 metasploit free on GitHub. More Insider Sign Out. An attacker can exploit this to disclose potentially sensitive information. Usually such malware is classified as Exploit.

Microsoft Windows Server : CVE security vulnerabilities, versions and detailed reports.

There are various ways to do it and let take time and learn all those because different circumstances call for a different measure. Server Message Block SMB , the modern dialect of which was known as Common Internet File System, operates as an application-layer network protocol for file sharing that allows applications on a computer to read and write to files and to request services from server programs in a computer network.

Using the SMB protocol, an application or the user of an application can access files or other resources at a remote server. This allows applications to read, create, and update files on the remote server. It can also communicate with any server program that is set up to receive an SMB client request. SMB functions as a request-response or client-server protocol. The only time that the protocol does not work in a response-request framework is when a client requests an opportunistic lock oplock and the server has to break an existing oplock because the current mode is incompatible with the existing oplock.

SMB 1. SMB 2. SMB 3. The SMB protocol supports two levels of security. The first is the share level. The server is protected at this level and each share has a password. The client computer or user has to enter the password to access data or files saved under the specific share.

User level protection was later added to the SMB protocol. It is applied to individual files and each share is based on specific user access rights. To identify the following information of Windows or Samba system, every pentester go for SMB enumeration during network penetration testing.

Here you can observe, we are using nmap the most famous network scanning tool for SMB enumeration. As a result, we enumerated the following information about the target machine:.

During the enumeration phase, generally, we go for banner grabbing to identify a version of running service and the host operating system. Once you enumerate this information then you should go for vulnerability scanning phase to identify whether the install service is a vulnerable version or patched version. Nmap serves various scripts to identify a state of vulnerability for specific services, similarly, it has the inbuilt script for SMB to identify its vulnerable state for given target IP.

As result, it has shown the target machine is highly vulnerable to Ms eternal blue due to SMBv1. As we know it is vulnerable to MS and we can use Metasploit to exploit this machine. Therefore we run the following module which will directly exploit the target machine.

We have successfully access remote machine shell as shown in the bellow image. Here we only need two dictionaries that contain a list of username and password in each and a brute force tool to make brute force attack. Once the commands are executed it will start applying the dictionary attack and so you will have the right username and password in no time.

After a few minutes, Hydra cracks the credential, as you can observe that we had successfully grabbed the SMB username as raj and password as Once you have SMB login credential of target machine then with the help of the following module of Metasploit you can obtain meterpreter session to access the remote shell.

There so many script and tools are available to connect remote machine using SMB protocol, we have already written an article for connecting SMB in multiple ways. This module serves payloads via an SMB server and provides commands to retrieve and execute the generated payloads.

Currently supports DLLs and Powershell. This will generate a link for malicious DLL file, now send this link to your target and wait for his action.

As soon as the victim will run above malicious code inside the run prompt or command prompt, we will get a meterpreter session at Metasploit. This module provides an SMB service that can be used to capture the challenge-response password hashes of SMB client systems. To exploit this, the target system must try to authenticate to this module. We had use nmap UDP and TCP port scanning command for identifying open ports and protocol and from the given image you can observe that port is open for NetBIOS network service in our local machine.

Now when the victim will try to access our share folder, therefore, he will try of connecting with us through his network IP, given below image is a proof to demonstrate that victim is connecting malicious IP: When the victim will try to access the shared folder, he will get trap into fake window security alert prompt, which will ask victims to enter his username and password for accessing shared folders. Once again the attacker had captured NTMLv2 hash, from the given image you can see that here also the attacker has captured:.

Now use john the ripper to crack the ntlmv2 hash by executing given below command. From given below image you can confirm we had successfully retrieved the password: for user: pentest by cracking ntlmv2 hash.

SMB Dos attack is another most excellent method we have in our Metasploit framework. To trigger this bug, run this module as a service and forces a vulnerable client to access the IP of this system as an SMB server. Now, when the victim will try to access the shared folder through our malicious IP, the target machine will get crushed and this attack is very effective.

This module will enumerate configured and recently used file shares. As you can observe that, here it has shown three UNC paths that have been entered in the run dialogue. Now we will use a python script that activates SMB service in our Linux machine. This is useful in the situation where the target machine does NOT have a writeable share available. You can visit GitHub for this python script. I copied the python code from GitHub and past it into a text file as smbserver. Since we are aware of smb service which is running in host machine In this way, we can use smb python script for sharing file between Windows and Linux machine.

It offers an interface similar to that of the FTP program. Operations include things like getting files from the server to the local machine, putting files from the local machine to the server, retrieving directory information from the server and so on. Moreover, we can use smbclient for sharing a file in the network. Here you can observe we had login successfully using raj: logins and transfer the user.

She is a hacking enthusiast. I really enjoyed reading this. I looked forward to looking into more of your work. Skip to content Hacking Articles. Penetration Testing. January 10, January 12, by Raj Chandel. Banner Grabbing RID cycling User listing Listing of group membership information Share enumeration Detecting if a host is in a workgroup or a domain Identifying the remote operating system Password policy retrieval Here you can observe, we are using nmap the most famous network scanning tool for SMB enumeration.

Scanning Vulnerability During the enumeration phase, generally, we go for banner grabbing to identify a version of running service and the host operating system.

Post Exploitation This module will enumerate configured and recently used file shares. File Sharing Smbexec. Like this: Like Loading Hack the Box: Fighter Walkthrough. A Detailed Guide on Hydra April 22,

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