Inject code into a running Python process
Pyrasite lets you to inject arbitrary code into an unaltered running Python process.
- gdb (https://www.gnu.org/s/gdb) (version 7.3+)
Download the latest stable release from PyPi: http://pypi.python.org/pypi/pyrasite
pip install pyrasite
You can also run the latest pyrasite from source:
git clone git://git.fedorahosted.org/git/pyrasite cd pyrasite python -m pyrasite.main
You can also fork pyrasite on GitHub: http://github.com/lmacken/pyrasite
The gui has been moved into it’s own repository: https://github.com/lmacken/pyrasite-gui
from pyrasite.inject import CodeInjector ci = CodeInjector(p.pid) ci.inject('pyrasite/payloads/helloworld.py')
Reverse Python Shell
This lets you easily introspect or alter any objects in your running process.
$ python >>> x = 'foo'
$ pyrasite <PID> pyrasite/payloads/reverse_python_shell.py $ nc -l 9001 Python 2.7.1 (r271:86832, Apr 12 2011, 16:15:16) [GCC 4.6.0 20110331 (Red Hat 4.6.0-2)] Type 'quit' to exit. >>> print x foo >>> globals()['x'] = 'bar'
Viewing the largest objects in your process
This payload uses meliae to dump all of the objects in your process to an objects.json file (currently dumped in the working directory of your process).
We recommend using python-meliae from your OS distribution, if available. If it is not, you will need to first install Cython, and then meliae seperately. If pip/easy_install does not work, you may need to use the tarball from the upstream website.
$ pyrasite <PID> pyrasite/payloads/dump_memory.py
Pyrasite also provides a tool to view the values of largest objects in your process. This requires urwid to be installed.
$ pyrasite-memory-viewer <PID> objects.json
$ pyrasite <PID> pyrasite/payloads/reverse_shell.py $ nc -l 9001 Linux tomservo 18.104.22.168-0.fc15.x86_64 #1 SMP Tue Aug 16 04:10:59 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux Type 'quit' to exit. % ls
Pyrasite comes with a payload that generates an image of your processes call graph using pycallgraph.
$ pyrasite <PID> pyrasite/payloads/start_callgraph.py $ pyrasite <PID> pyrasite/payloads/stop_callgraph.py
Dumping modules, thread stacks, and forcing garbage collection
pyrasite/payloads/dump_modules.py pyrasite/payloads/dump_stacks.py pyrasite/payloads/force_garbage_collection.py
Additional installation notes
Mac OS X
If you don’t want to override Apple’s default gdb, install the latest version of gdb with a prefix (e.g. gnu)
$ ./configure --program-prefix=gnu $ pyrasite <PID> pyrasite/payloads/reverse_python_shell.py --prefix="gnu"
Since version 10.10, Ubuntu ships with a controversial patch that restricts the scope of ptrace, which can be disabled by running:
echo 0 | sudo tee /proc/sys/kernel/yama/ptrace_scope
You can install pyrasite from the Arch User Repository If you want python debugging symbols, you may have to self compile python2.
#pyrasite on Freenode.
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