Ettercap Tutorial For Network Sniffing and Man In The Middle

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As pentester we use a lot of tools during penetration tests. One of the main parts of the penetration test is man in the middle and network sniffing attacks. We generally use popular tool named ettercap to accomplish these attacks. In this tutorial we will look installation and different attack scenarios about ettercap .

Install

We will look different installation types.

Debian, Ubuntu, Kali, Mint:

If we want to install GUI too run following command.

CentOS, Fedora, RHEL:

Windows

Compiled ettercap Windows binaries can be downloaded from following link.

https://sourceforge.net/projects/ettercap/files/unofficial%20binaries/windows/

Help

Detailed help about ettercap can be listed with the -hoption like below.

Help

Help

User Interface and Work Mode

Ettercap provides different type of user interface. GUI is the easiest one but we will use text only interface in this tutorial.

Text Only

Like a black linux terminal.

Curses

Curses is better interface than text only where it have menus.

GTK

Gtk is fully graphical user interface

Daemon

Daemon mode will work background without stopping.

List Interface

Before specifying interface we should list available interfaces. We can list interfaces with -I option .

Specify Network Interface

The first thing we should learn is select interface we want to operate with ettercap . We will use de facto option -i to specify interface we want to select. In this example we will select interface ens3

LEARN MORE  Arp-Scan Command Tutorial With Examples

Select User Interface

We will use curses interface which can be selected with  -C option.

Start GUI

We can start GUI with the following command. Because ettercap will sniff and change os settings we need to provide root privileges while starting ettercap.

Select Sniff Mode

We should select sniff mode where two options are ;

  • Unified Sniffing
  • Bridged Sniffing

We will select Unified Sniffing

Select Sniff Mode

Select Sniff Mode

Select Interface

In this step we will select sniff interface

Select Interface

Select Interface

Current screenshot we can see that ettercap is sniffing.

Host List

We can list hosts from Host menu

Host List

Host List

Add To Target

We will add hosts to the target with Add to Target 1 and Add to Target 2 buttons. From host list menu.

Arp Poisoning

We will select ARP Poisoning from Mitm menu like below.

Arp Poisoning

Arp Poisoning

We should enable Sniff remote connections if we want to sniff all connections including remote ones.

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