Hack through port 445

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. Next, right click it and select Modify. In the pop-up window, change Value data from 1 to 0. Click OK to confirm. This method is effective and almost applies to every computer user. If you just follow the steps strictly, no mistakes will be made.

Please note that you need to disable Windows Server service to strengthen the protection for WannaCry cyber attack. Find Server and double click it. It is at the middle of the service events normally. In the pop-up window, select Disabled from the drop-down list and click OK. Just replace port with these ports in the steps. It is suggested to close all of them for temporary. Disabling TCP port or other dangerous ports is one of the most important steps in against ransomware.

Nevertheless, we can do more in other aspects. Below are tips listed by security experts. Install MS patch for Windows 7 and install anti-virus software. Create bootable media is also available in case your computer fails to boot. What we need to do is arm ourselves and fight against malicious hackers. However, in addition to doing something eg: block port to remedy the problem after it occurs, it's necessary to make a schedule backup for your crucial data.

Also, except for data, you still need to protect other important things on your PC, such as, system, disk or partition. That way you won't be put in danger. You can backup any items you want, and enable its Schedule Backup to continuously protect your system and data.

To avoid avoid backup disk full, you can enable Normal or High compression level, Incremental Backup , Differential Backup, Backup Scheme according to your situation. The last two feature are only available on the professional version. If you don't know what is NTLM or you want to know how it works and how to abuse it, you will find very insteresting this page about NTLM where is explained how this protocol works and how you can take advantage of it.

To look for possible exploits to the SMB version it important to know which version is being used. If this information does not appear in other used tools, you can:. Pat of this section was extracted from book " Network Security Assesment 3rd Edition ". You can use the Samba rpcclient utility to interact with RPC endpoints via named pipes.

It may be possible that you are restricted to display any shares of the host machine and when you try to list them it appears as if there aren't any shares to connect to. Thus it might be worth a short to try to manually connect to a share.

These may indicate whether the share exists and you do not have access to it or the share does not exist at all. Common share names from Network Security Assessment 3rd edition. You may be able to read the registry using some discovered credentials. Impacket reg. Note: rpcclient command lookupsids only translates a SID to a username but doesn't allow enumeration via brute-forcing. You can authenticate to kerberos using the tools smbclient and rpcclient :. You can indicate which option you prefer to use with the parameter --exec-method :.