Re:Writing ARM64 Code for Apple Platforms
by Wowfunhappy on Thursday June 24, 2021 @03:26PM
(#27622662)
> Apple does things like making NSScreen.visibleRect readonly so that only their Dock program can change it and nobody else. Meanwhile, on Windows/Linux I can programatically do just about anything I choose to, so I can replace the taskbar (and even app window chrome/menus) with something else if I want.
If you turn SIP off, you should be able to swizzle those methods with your own implementations. I admittedly haven't tried with NSScreen.visibleRect specifically, but I've swizzled plenty of other low-level objective-c stuff. When I need to go even deeper, there's dyld interposing.
You just need to turn off SIP. It's the magic switch that lets you do whatever you want. Some people argue "letting the user do whatever they want" is poor security, and perhaps it is, but you can't have it both ways—either grant yourself control and accept the security consequences, or leave Apple in control and accept the restrictions.
If you turn SIP off, you should be able to swizzle those methods with your own implementations. I admittedly haven't tried with NSScreen.visibleRect specifically, but I've swizzled plenty of other low-level objective-c stuff. When I need to go even deeper, there's dyld interposing.
You just need to turn off SIP. It's the magic switch that lets you do whatever you want. Some people argue "letting the user do whatever they want" is poor security, and perhaps it is, but you can't have it both ways—either grant yourself control and accept the security consequences, or leave Apple in control and accept the restrictions.