原文链接：https://kov4l3nko.github.io/blog/2018-03-18-my-experience-with-lldb-and-electra-jb/

My experience with LLDB on Electra Jailbreak 1.0.4

Mar 18, 2018

Debugging via USB

Attaching LLDB to already running process

Running an app under LLDB

I tried to google a short and clear instruction how to debug apps from AppStore on iOS devices jailbroken withElectra, with no success, so I wrote this guide. I tested it on iPhone 7 running iOS 11.1.2 with Electra jailbreak of version 1.0.4. I’m not sure it will work on any iOS device jailbroken with Electra.

Debugging via USB

For me, it works only if I do debugging via USB. Ifiproxyis not installed on your Mac, install it, e.g. withbrew:

$ brew install usbmuxd

Then run in your Mac console:

$ iproxy 6666 6666
$ iproxy 2222 22

Finally, attach you iPhone to USB. That’s it, we are ready to start.

Attaching LLDB to already running process

On your Mac console, connect the iPhone:

$ ssh -p 2222 root@localhost

In the iPhone’s console, run

# ps ax

Find pid of the process you want to attach. Then run

# /electra/jailbreakd_client <the pid> 1
# /Developer/usr/bin/debugserver localhost:6666 -a <the pid>

If you see something like

debugserver-@(#)PROGRAM:debugserver  PROJECT:debugserver-360.0.26.14
 for arm64.
Attaching to process 1418...
Listening to port 6666 for a connection from localhost...

everything going well. Now, open another console on your Mac, and run

$ lldb

In LLDB console, run

(lldb) platform select remote-ios
(lldb) process connect connect://localhost:6666

That’s it! :)

Running an app under LLDB

On your Mac console, connect the iPhone:

$ ssh -p 2222 root@localhost

In the iPhone’s console, run

# debugserver localhost:6666 -x backboard /var/containers/Bundle/Application/<path to the app binary>

If you see something like

debugserver-@(#)PROGRAM:debugserver  PROJECT:debugserver-360.0.26.14
 for arm64.
Listening to port 6666 for a connection from localhost...

everything going well. Now, open another console on your Mac, and run

$ lldb

In LLDB console, run

(lldb) platform select remote-ios
(lldb) process connect connect://localhost:6666

Happy debugging!

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