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I'm doing a project to my college and I have this scenario:

  • Arduino (192.168.0.113): Receiving packets and send response
  • My router (192.168.0.2): WPS from my gateway
  • My gateway (192.168.0.1): Receive the internet and has DHCP Server
  • My Attacker (192.168.0.110): Kali Linux
  • My Victim (192.168.0.112): Windows 10

I have to send a packet from Victim to Arduino to blink a LED (that's OK). My Attacker make a MITM in the network (arpspoof/ettercap) and that works (I tested with a telnet connection with dsniff and shows in the screen). But I need to steals the packet directed to Arduino, to simulate problems with IoT (stole packets and change of information in clear text). I try to make a filter in ettercap, but it doesn't work.

Edited: I have to send a packet from Victim to the Arduino with information to blink a LED, but I want to steale this packet and change it to make the LED always on, for example.

So I've made a MITM and try to get that specific packet in my network, but I can't find the packet. The packet is sent by a browser from Victim to the Arduino and has a GET variable in URL that inform Arduino what it should do.

  • Sorry I can't understand your last paragraph, can you edit it? What do want to do exactly? – Sirens Oct 31 '17 at 1:37
  • You need to get a packet capture, check out wireshark. I can't teach you all there is to know about wireshark but it's an excellent tool. – Sirens Oct 31 '17 at 2:00
  • I have used wireshark and cannot see any HTTP packet. I see the TELNET packets and can extract the information. but the HTTP doesn't appear. I set the MITM between Victim and Gateway (connected via cable) – Gabriel Oraboni Carvalho Oct 31 '17 at 2:22
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    HTTP is over TCP and isn't decoded automatically. Select the TCP conversation you suspect is it, go to analyze, and click "follow tcp stream". You should get a pop up with the HTTP data. – Sirens Oct 31 '17 at 2:23
  • I like to thank you @Sirens. I simplified the scenario, so I'm able to find the packet that I want. And I find with HTTP protocol. – Gabriel Oraboni Carvalho Nov 1 '17 at 0:44

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