In such situations, you can use Netcat: as a command on a vulnerable router, you need to run nc, then connect to it in this case, it will be possible to execute commands through Netcat without limiting the amount of information displayed. In the article about RouterSploit (“Instructions for Using RouterSploit”) in one of the tested routers (this was my own router) the vulnerability of remote command execution was found, although there was a limit on the amount of information returned – it was cut off after a certain number of characters. If the remote computer is behind NAT and there is no way to connect to it directly over IP, then Netcat will come to the rescue again! In connection mode, it will connect back to your computer (Reverse Shell). Moreover, Netcat has two modes: listening mode and connection mode. That is, if a vulnerability is found in a web application, for example, execution of arbitrary commands at the system level, then among the various operating ways, you can choose to launch Netcat, which, if run correctly, will perform the functions of a full featured backdoor, passing our commands to the operating system.

Of course, a penetration tester (a network security auditor) needs to be an advanced user in network protocols and be able to use Netcat in the learning process.īut the real value of Netcat for a pentester is that this is a real backdoor! And since the utility is very useful for network administrators, it is installed in many systems, including servers, by default!!! Netcat is a useful network utility with which you can analyze and simulate the operation of many network protocols (for example, how to do this with HTTP will be shown later), you can execute commands on a remote machine and upload or download files from it, redirect traffic from one port to another or from one machine to another. 11. How to download a file from a remote computerġ3. How to use Ncat to access services that are only available on the local networkġ5. How to allow connection to Ncat from certain IPĢ0. Conclusion What is netcat (nc, ncat) for

Install netcat for windows 10