mitmproxy is a free and open source interactive HTTPS proxy.
To quickly get this up and running on Ubuntu 19.04 (newer and possibly older releases should be the same basic process).
sudo apt install mitmproxy
This should install the latest version, if not you can get the binary direct from the website: https://mitmproxy.org
Start the proxy
For this demo we'll use port 8881 for the proxy but this can be anything not already in use.
For the command line version:
sudo mitmproxy -p 8881
Or the web UI version
sudo mitmweb -p 8881 --web-port 8882
Using 8882 as the web port, this will let you open http://127.0.0.1:8882/ to watch the traffic through but again this can be any port you like.
Open your Network settings and click to edit your Network Proxy.
Can also be found by going through chrome://settings/?search=proxy and clicking Open proxy settings
Set to Manual & set both your HTTP & HTTP proxies to localhost port 8881.
Setup SSL/TLS certificate for HTTPS support
This step is only needed the first time it's run.
Go to http://mitm.it/pem/cert which will download the certificate.
Then to import this into Chrome, head to chrome://settings/certificates and click Authorities & then click Import to select the downloaded certificate.
If using the command line version the requests will be listed as they come in. Use the up and down arrows to navigate around, press enter to view inside a request and then left & right between the tabs. You can also use your mouse to click the requests and tabs if easier. Then press q to go back to the requests list. Ctrl+c as often to exit.
Or if you're using the web UI, simply head over to http://127.0.0.1:8882/ and it'll start listing requests as you navigate the web.
Remember when you're done to disable your Network proxy setting when you're done with the proxy.comments powered by Disqus