Questions tagged [macos]

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23 views

Kernel debug two physical MacBook pro devices

I've asked the same question at stackoverflow, but i'm gonna copy-paste it here as i might get more relevant answers(?): I'm trying to kernel debug a physical Macbook pro device. When my setup ...
1
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1answer
35 views

macOS under M1, cannot find library

I'm looking for the following dylib file which is included from process loginwindow. If I run vmmap to inspect loginwindow while it's up and running I get : user@mycomp / % sudo vmmap -I ``pgrep ...
1
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1answer
37 views

Inbound network queries not appearing in developer tools of browser

When trying to understand the behavior of web apps, I find myself stumbling against the fact that some network messages do not appear on the network tab of the web developer tool of the browser. For ...
0
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1answer
139 views

How to fix an extracted dyld from dyld_shared_cache_x86_64?

As part of challenging my self I was trying to run a program that doesn't exist on Catlina taken from Big Sur. I had to extract the dylibs from the shared cache by using this tool. The library called ...
3
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2answers
155 views

Extract closed format metadata from audio file

I am writing an app to analyze .wav audio files and extract metadata. The way the metadata works for RIFF based files is shown in this picture: You need to have "format" and "data&...
0
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0answers
29 views

ILSpy edits wont save .dll

(I'm on mac btw) So I want to try game hacking, and I've done some research. So I made a simple unity first-person shooter and built it, and I went into the files and found Assembly-Csharp.dll and I ...
0
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0answers
118 views

Help explain warning messages when running gdb

[System: mac mojave 10.14.6, gdb 9.1 installed via brew] I have recently installed gdb and am a newb user. After many hours of searching, I got it working by following the instructions from https://...
-2
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1answer
295 views

How to fix Mach-O segment section to deobfuscate the binary

When reversing a Mach-O crackme file under IDA Free and MacOS, the analysis output a log in the console window that yields warning about Mach-O segments. Loading file 'target' into database... ...
3
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3answers
4k views

GDB hangs when I try to run and debug a binary

When I type gdb a.out and then run inside the gdb itself I get stuck on the empty line: jericho-laptop:exploit.education jericho$ gdb a.out GNU gdb (GDB) 9.1 ... Reading symbols from a.out... (No ...
1
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1answer
277 views

Not able to find Hard coded strings in the mac executable file

I know that there is a string called "Activate your subscription" used in this particular app. But Im not able to find this string from its executable. I tried strings myapp and also searched for same ...
4
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1answer
5k views

OTOOL alternative for linux

I have a reverse engineering set up on a Mac machine. This set up does some reverse engineering on iOS applications(.ipa files). I'm migrating the setup from Mac to a linux machine. Currently on Mac, ...
3
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2answers
1k views

(MacOS) disable codesign check / run codesign on multiple files

so I have two questions, I'll try to keep it short (also, im a noob): I run logic pro x and other software to make music, and some third party plugins make program crash if they get a: Exception ...
5
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1answer
618 views

Import symbols containing strange characters

I am analyzing a macOS app with radare2, and the app depends on a number of Qt frameworks. When I printed out the import symbols of the app's main executable, the names of the frameworks' functions ...
3
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2answers
2k views

How to use Hopper Debugger Server

I am assuming that Hopper Debugger Server is meant to allow you to remotely debug an potentially malicious app. For example, I would like to debug an app that is running on a VM or on a separate ...
4
votes
2answers
475 views

IDA Pro: “File is apple protected”

I'm trying to disassemble Dock.app on macOS Sierra, and IDA is giving me this error message: What does this mean?
1
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1answer
73 views

OSX User level application Preferences (plist) are not loaded after binary modification

I am working on a project that requires to modify an existing OSX application's dylib binary (few bytes to correct an obsolete URL). I do not have access to the application source code nor the code ...
4
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2answers
2k views

Why are there absolute jmps in disassembly of position independent code?

I'm playing around with Hopper and am looking at the disassembly of a binary that otool reports as having the PIE flag. It's my understanding that as a result, the executable base address will be ...
2
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0answers
409 views

IDA Pro macOS kernel debugging and lldb support

I'm trying to revers some kexts on macOS and I can't find a way to achieve the same level of debugging you can do on Windows kernel with IDA and WinDBG. Is there a way to add support for lldb? Or can ...
0
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1answer
128 views

What does the M68k $FBE6 instruction do on a classic Mac?

I have a classic Mac OS executable where control is given to an instruction whose hex encoding is $FBE6. I have been unable to find documentation for this F-line instruction, and it doesn't appear to ...
1
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1answer
70 views

Is there a static address to a pointer on Mac OS?

Given the sample code below: #include <iostream> struct Data { int a; int b; int c; }; int main() { Data *d = new Data; d->a = 1337; d->b = 1338; d->c = ...
7
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1answer
1k views

Reverse engineering the PluginKit MacOS framework

I've been tasked with an assignment requiring a thorough reverse engineering effort on the PluginKit framework in modern Mac operating system, and I'm looking for information to start off, instead of ...
14
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6answers
15k views

What is a free & open source alternative to IDA Pro for MacOS?

I am looking for a free & open source alternative to IDA Pro runs on MacOS - the suggestions should have as close to the features of IDA as possible. I should also be able to edit an executable ...