Amap -- Application Mapping Tool, Banner Grabbing

Amap is an application mapping tool that we can use to read banners from network services running on remote ports. In our this detailed article we are going to learn hot we can use Amap on Kali Linux to acquire service banners in order to identify the services running with open ports on a target system.

In the above screenshot we can see that -B flag in Amap can be used to run Amap in banner mode. This have it collect banners for the specified IP and service port(s). This application can be used to collect the banner from a single service by specifying the remote IP address and port number.

For an example we run following command on our terminal:

amap -B 172.20.10.10 21

This command will scan our Metaspoitable2 IP to grab the banner of port 21. The result shown in the following screenshot:

In the above screenshot we can see that we got the opened ports and their banners. Sometimes the normal output of the command shows lots of unnecessary & redundant information that can be extracted from the output. Like the IP address & metadata is there without any logic. We can filter the output using following command:

amap -B 172.20.10.10 1-65535 | grep "on" | cut -d ":" -f 2-5

Now in the following screenshot we can see that the output is to the point.