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packing-box / docker-packing-box

Docker image gathering packers and tools for making datasets of packed executables and training machine learning models for packing detection

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`AttributeError` when patching angr CLE with tinyscript

AlexVanMechelen opened this issue · comments

commented

Issue

Similar to #113, the patching of angr CLE with tinyscript fails.

Traceback

After removing the try except pass around the patching code - here

>>> exe = Executable("/mnt/share/experiments/exp1/datasets/a/files/65fbb0b87e5ffb26095f35e7b27e4932d75fc377fd0a1a64d80a45340615940d")
>>> exe.cfg
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python3.11/functools.py", line 1001, in __get__
    val = self.func(instance)
          ^^^^^^^^^^^^^^^^^^^
  File "/home/user/.local/lib/python3.11/site-packages/pbox/core/executable/__init__.py", line 245, in cfg
    from .cfg import CFG
  File "/home/user/.local/lib/python3.11/site-packages/pbox/core/executable/cfg/__init__.py", line 2, in <module>
    from .__common__ import *
  File "/home/user/.local/lib/python3.11/site-packages/pbox/core/executable/cfg/__common__.py", line 31, in <module>
    class CFG(GetItemMixin, ResetCachedPropertiesMixin):
  File "/home/user/.local/lib/python3.11/site-packages/pbox/core/executable/cfg/__common__.py", line 32, in CFG
    engines = {k: getattr(angr.engines, "UberEngine" if k in ["default", "vex"] else f"UberEngine{k.capitalize()}") \
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/user/.local/lib/python3.11/site-packages/pbox/core/executable/cfg/__common__.py", line 32, in <dictcomp>
    engines = {k: getattr(angr.engines, "UberEngine" if k in ["default", "vex"] else f"UberEngine{k.capitalize()}") \
                          ^^^^^^^^^^^^
  File "/home/user/.local/lib/python3.11/site-packages/tinyscript/__conf__.py", line 52, in _load
    postload()
  File "/home/user/.local/lib/python3.11/site-packages/pbox/core/executable/cfg/__common__.py", line 22, in __init_angr
    code.insert_line(PESection.__init__, 0, "from tinyscript.helpers import ensure_str")
  File "/home/user/.local/lib/python3.11/site-packages/tinyscript/preimports/codep.py", line 153, in code_add_line
    return code_add_lines(func, index, addition, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/user/.local/lib/python3.11/site-packages/tinyscript/preimports/codep.py", line 115, in _wrapper
    f(*args, **kwargs)
  File "/home/user/.local/lib/python3.11/site-packages/tinyscript/preimports/codep.py", line 180, in code_add_lines
    return __apply_code(func, old_code, new_code)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/user/.local/lib/python3.11/site-packages/tinyscript/preimports/codep.py", line 36, in __apply_code
    patchy.api._set_source(func, new_code)
  File "/home/user/.local/lib/python3.11/site-packages/patchy/api.py", line 305, in _set_source
    new_source = _process_method()
                 ^^^^^^^^^^^^^^^^^
  File "/home/user/.local/lib/python3.11/site-packages/patchy/api.py", line 277, in _process_method
    _def, _ast, fv_body = _process_freevars()
                          ^^^^^^^^^^^^^^^^^^^
  File "/home/user/.local/lib/python3.11/site-packages/patchy/api.py", line 260, in _process_freevars
    _ast.body = _ast.body + fv_force_use  # type: ignore [attr-defined]
                ^^^^^^^^^
AttributeError: 'ImportFrom' object has no attribute 'body'
commented

@AlexVanMechelen Seems like index 0 fails.