Burp Suite

Upstream proxy servers

From here https://portswigger.net/burp/documentation/enterprise/user-guide/working-with-sites/site-settings/upstream-proxy-servers

We first launch proxy.py using proxychains:

proxychains -q proxy

python3 -m venv virtual-environment-to-proxy
source virtual-environment-to-proxy/bin/activate
pip3 install --upgrade proxy.py
proxychains -q proxy

This will automatically generate an HTTP proxy in 127.0.0.1:8899

• Open Burp Suite

• Settings

• Connections

• Upstream proxy servers

Set the upstream 8899 proxy to require that Burp Suite makes a request first to that server and then the proxy will process the request.

Selecting our Burp Suite proxy with foxyproxy, we could interact with any site that our proxychains tunnel contains.