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How to fix some mysterious problems.

I've been trying to dump memory of a 64-bit application (at least it seems to be so). Looking at many of the tutorials (this, this and this) what I did was:

  1. Installed gdb.
  2. SSH into device.
  3. Cracked application using Clutch and installed it again using ipainstaller command-line tool.
  4. Started application and found its PID from ps -ax.
  5. gdb -p %PID%

What I get however is a Segmentation fault: 11 when trying to attach. Some applications like Chess.com or TinyRails are OK to getting attached but ten I see bunch of errors:

warning: error on line 221 of "/Volumes/Builds2/BuildRoot/SourceCache/gdb/gdb-1708/src/gdb/macosx/macosx-nat-infthread.c" in function "kern_return_t modify_trace_bit(thread_t, int)": (os/kern) invalid argument (0x4x)

warning: error on line 395 of "/Volumes/Builds2/BuildRoot/SourceCache/gdb/gdb-1708/src/gdb/macosx/macosx-nat-infthread.c" in function "void prepare_threads_after_stop(struct macosx_inferior_status *)": (os/kern) invalid argument (0x4x)

Is there a way to dump memory from 64-bit applications? Ideally I want to be able to do that on device only, without Xcode or other specific PC tools.

asked 01 Apr, 11:54

lolbas's gravatar image

lolbas
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Ask again on https://www.reddit.com/r/jailbreak/

Almost no one is active here (and I don't know how to help)

(04 Apr, 14:44) King Shoot King%20Shoot's gravatar image
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Asked: 01 Apr, 11:54

Seen: 200 times

Last updated: 04 Apr, 14:44

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