Setting Up A Kali Interception VM

Twice now I've had to setup an interception proxy for testing protocol implementations. Below are the steps I took to configure the Kali VM as my main MITM box. I decided to not use a MITM attack like ARP Spoofing but instead setup Kali as a middling router. The networking setup is rather simple:
TargetDevice (over USB Ethernet adapter)-> Kali VM (Bridged Mode) -> Laptop's Wifi

1. Download/install Kali as a virtual machine
2. Set the VM in bridged mode (VMware breaks some things)
3. Follow the guide here to get Internet sharing configured on Kali: http://itfanatic.com/?q=node/84
4. Create an iptables rule to redirect your target traffic to your proxy software. Here i'm redirecting all traffic over 443 to 2020 (where striptls is listening): iptables -t nat -A PREROUTING -p tcp --dport 443 -j REDIRECT --to-port 2020
5. Download striptls from github
6. Run it locally with something like: ./striptls.py -s --listen 0.0.0.0:2020 --remote exampletarget.com:443

Running striptls is obviously not mandatory since step 3 configured a working middle machine. I just used it in my testing to strip the TLS command from XMPP and HTTPS. You now have a machine all traffic is flowing through and is at your disposal to do with as you wish.