macOS 10.13 contains a built-in VPN client that natively supports L2TP over IPSec as well as IKEv2.
In this post I describe some parts of the internal architecture of the macOS VPN client. This information will be used in a following article to build an application that replicates some functionalities of the VPN status in the menu bar. This application will also allow to auto connect to an IKEv2 VPN service, something that is currently not possible on macOS.
A year ago I analyzed how many built-in apps in iOS 10.1 and macOS 10.12 were using Swift: Apple’s use of Swift in iOS 10.1 and macOS 10.12.
How many built-in apps are using Swift in iOS 11.1 and macOS 10.13.1? Let’s find it out!
/usr/lib/libMobileGestalt.dylib is a private library which provides an API to retrieve the capabilities of the iOS device, as well as some runtime information: system version, build version, device type, current status of the airplane mode, …
Ian Beer did an incredible work with his iOS 10.1.1 exploit. The mach_portal proof of concept gives you a root shell on iOS 10.1.1. You can read more about it here:
While playing with it, I discovered that the amfid patch was only supporting thin arm64 binaries. I did not find a fix online so here is my solution.
Let’s say you pick a random pointer. Can we know if it points to a valid Objective-C object? Of course without crashing… Well there is no simple solution. In this post I give a solution for 64-bit architectures. The code provided has only been tested on macOS 10.12.1 and iOS 10.1.1 with the modern Objective-C runtime.