How to print the names of all Objective-C classes in an iOS binary?

Question

I want to print the names of all Objective-C classes found in an iOS binary using "otool" or "objdump". I am doing this on macOS, on an iOS binary that is not encrypted.

What I tried:

1. Solution suggested here How to statically dump all ObjC methods called in a Cocoa App?

otool -oV /path to executable/ | grep name | awk '{print $3}'

but i don't know how to only parse the objective-c class names.

2. Solution using "nm" but i dont really like it:

nm /path to executable/ | grep _OBJC_CLASS_

Can you guys help me with a cmd/script to print the names of all Objective-C classes in an iOS binary?

Answer 1

I assume what you don't like about

nm /path to executable/ | grep _OBJC_CLASS_ 

output:

0000000100003d08 S _OBJC_CLASS_$_AppDelegate
                 U _OBJC_CLASS_$_UIResponder
                 U _OBJC_CLASS_$_UIViewController
0000000100003c90 S _OBJC_CLASS_$_ViewController

are the parent classes marked with U.

Using otool I got to:

otool -tv /path to executable/|grep ]|awk '{print substr($1,3)}'|uniq 

yielding in comparison

ViewController
AppDelegate