Bypass ProtonVPN macOS Certificate Pinning with Proxyman and Frida

A short blog on how to bypass certificate pinning on the ProtonVPN macOS app using Proxyman and Frida. ProtonVPN is a VPN service operated by the Swiss company Proton AG. The service features a cilent application that users can install on various platforms, such as Android TV and Chromebook. I’ve personally had a proton email account for a quite a while now, but never really looked into the VPN service. I was mainly curious at how the macOS app communicates with the backend, and what API end-points it talks to....

18 December, 2022 · 6 min · Naz Markuta

Dynamips at 100% CPU Usage Fix

While working on a virtual pentest lab in VMWare Fusion. I had the desire of emulating a Cisco router device on a virtual network. The tool I used Dynamics did exactly that. However, it was eating up all CPU resources, making other guests almost unusable. Below shows VMware Fusion process running in Activity Monitor: Fix Open the Dynagen Management console dynagen /opt/config.net and run idlepc get R1 (R1 is the name of the router) which will calculate a better Idle PC Value for the current guest....

30 May, 2017 · 1 min · Naz Markuta