Help/Support LLDB crashes phone after setting watchpoint

LLDB Novice · September 7, 2015

Hello, I'm on a jailbroken iphone 6+ running 8.3

I'm kinda new to this whole debugging thing, but I can usually follow tutorials, and had some success with GDB/GNU in the past. (ios 6 jb)

I now have a LLDB debugger setup using putty and LLDB (windows), and I'm able to attach to a process and set a watchpoint and get the value of the variable (in this instance, it's ammo)..however, when I shoot the gun to trigger the watchpoint, the phone restarts itself.

I can't figure out what I'm doing wrong. Sometimes the debugger will break at the watchpoint, but usually just crashes on the first attempt. Are there other types of packages I need to download or remove in cydia?

Also, is GDB/GNU obsolete now? Or is LLDB just a better debugger?

Thanks in advance for any help!

NitroxicDemon · September 7, 2015

GDB still works great for breakpoints, I use LLB for watchpoints.

LLDB Novice · September 7, 2015

Somehow I'm unable to use GDB on iOS 8.3, any tips on getting it running?

Rook · September 7, 2015

@@LLDB Novice

I believe the restarts are because of the debugserver you're using.

Can you try the one from this topic: http://iosgods.com/topic/5380-tutorial-how-to-get-lldb-working-on-windows/

Set the permissions properly and remove the old one.

LLDB Novice · September 8, 2015

That's exactly the one I was using, its the only one I ever installed.

What do you suppose I'm doing wrong?

Rook · September 8, 2015

That's exactly the one I was using, its the only one I ever installed.

What do you suppose I'm doing wrong?

I'm not sure really.

You can try re-applying it.

There was a member who had the same problem you did and he fixed it by using devugserver from that post.

LLDB Novice · September 8, 2015

Ok, I just downloaded it again...

in filza, the info for the file is as follows:

Ownership:
-Owner: mobile
-Group: mobile

Access permissions:

-Mask: 06755

Sticky:

-Set UID: checked
-Set GID: checked

-Restricted Delete: unchecked

Owner:

-Read: Checked

-Write: Checked

-Execute: Checked

Group:

-Read: checked

-Write: unchecked

-Execute: checked

Others:

-Read:: Checked

-Write: unchecked

-Execute: Checked

are those the correct permissions?

the debug server that's in my bin folder right now has the same access permissions, but the ownership is Owner: root, and group: wheel..is that incorrect?

I noticed everything else in that folder has Root/wheel as the ownership, which is why it was changed to that..should i have left it as mobile/mobile?

Rook · September 8, 2015

Ok, I just downloaded it again...

in filza, the info for the file is as follows:

Ownership:

-Owner: mobile

-Group: mobile

Access permissions:

-Mask: 06755

Sticky:

-Set UID: checked

-Set GID: checked

-Restricted Delete: unchecked

Owner:

-Read: Checked

-Write: Checked

-Execute: Checked

Group:

-Read: checked

-Write: unchecked

-Execute: checked

Others:

-Read:: Checked

-Write: unchecked

-Execute: Checked

are those the correct permissions?

the debug server that's in my bin folder right now has the same access permissions, but the ownership is Owner: root, and group: wheel..is that incorrect?

I noticed everything else in that folder has Root/wheel as the ownership, which is why it was changed to that..should i have left it as mobile/mobile?

Try both as root/wheel and mobile/mobile

LLDB Novice · September 8, 2015

I did, tried mobile/mobile, root/wheel, and even root/staff (that's what gdb has)

Always crashes once I set a watchpoint and try to shoot the gun to change the value..with the original file (from that link, downloaded from PC, transferred with filza) as well as another downloaded copy from the same link (downloaded directly from/to phone)

Rook · September 8, 2015

I did, tried mobile/mobile, root/wheel, and even root/staff (that's what gdb has)

Always crashes once I set a watchpoint and try to shoot the gun to change the value..with the original file (from that link, downloaded from PC, transferred with filza) as well as another downloaded copy from the same link (downloaded directly from/to phone)

You're on iOS 8.3?

Which gane is it? Does this happen on all? Can you tey while in Safe Mode?