Mach-O Objective-C Symbol Support

[fuomag9]

Does anyone know if you can get mach-o binaries function names from the binary or eventually import them? Ghidra/hopper/ida have them

[fuomag9]

As you can see the function in binary ninja doesn't have either the class nor the name it has in hopper, it gets the address name instead

[fuomag9]

According to Peter on slack this is a bug

[jeffli678]

Yeah I also encounter this from time to time.

[fuomag9]

Yeah I also encounter this from time to time.

My mach-o binaries come from .ipa files all the time, I've never had symbol tables parsed in binary ninja unfortunately and I've tried on all OS supported by binary ninja

[jeffli678]

Exactly, ipa files are problematic. I might look into this.

[bpotchik]

I just found and fixed a bug related to parsing the dynamic table. Related bug is #1862. Unsure if it fixes the issue encountered here. If you are able to check please report back. Thanks!

The other fix is in 2.1.2319-dev.

[fuomag9]

I just found and fixed a bug related to parsing the dynamic table. Related bug is #1862. Unsure if it fixes the issue encountered here. If you are able to check please report back. Thanks!

The other fix is in 2.1.2319-dev.

I'm on Version 2.1.2319-dev Personal (Build ID 7d13301) and unfortunately the issue is still present, hopper can correctly display the classes names and functions, meanwhile binary ninja just calls them by their address. :(

[hubert3]

Confirm version 2.1.2346-dev is still missing many symbols in a Mach-O binary that Hopper and IDA display.

Binary Ninja seems to get some symbols from the application's main executable binary but fewer from a Mach-O framework library

[bpotchik]

@hubert3 would you happen to have a binary you can share? You can DM me on slack if you like. Thanks!