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CLE crashes when trying to load FASM-compiled executables

See original GitHub issue

>>> b=angr.Project('./garbage_bytes2.EXE')
ERROR   | 2015-12-15 16:57:25,594 | cle.loader | Loading error when loading /home/viktor/tool/angrtest/garbage_bytes2.EXE with backend Blob
Traceback (most recent call last): File "/home/viktor/.virtualenvs/angr3/local/lib/python2.7/site-packages/cle/loader.py", line 230, in load_object loaded = backend(path,compatible_with=compatible_with, filetype=filetype, is_main_bin=is_main_bin, **options)
  File "/home/viktor/.virtualenvs/angr3/local/lib/python2.7/site-packages/cle/backends/blob.py", line 25, in __init__raise CLEError("Must specify custom_arch when loading blob!")
CLEError: Must specify custom_arch when loading blob!
Traceback (most recent call last):    
  File "<stdin>", line 1, in <module>
  File "/home/viktor/.virtualenvs/angr3/local/lib/python2.7/site-packages/angr/project.py", line 98, in __init__
self.loader = cle.Loader(self.filename, **load_options)
File "/home/viktor/.virtualenvs/angr3/local/lib/python2.7/site-packages/cle/loader.py", line 88, in __init__
self._load_main_binary()
File "/home/viktor/.virtualenvs/angr3/local/lib/python2.7/site-packages/cle/loader.py", line 139, in _load_main_binary
self.main_bin = self.load_object(self._main_binary_path, self._main_opts, is_main_bin=True)
File "/home/viktor/.virtualenvs/angr3/local/lib/python2.7/site-packages/cle/loader.py", line 236, in load_object
raise CLEError("All backends failed loading %s!" % path)
cle.errors.CLEError: All backends failed loading /home/viktor/tools/angrtest/garbage_bytes2.EXE!

Not sure if this is my error or whether it is on angr/CLE. I made a fresh virtualenv to try and fix this. Didn’t help.

garbage_bytes.txt

Issue Analytics

State:
Created 8 years ago
Comments:9 (6 by maintainers)

Top GitHub Comments

1reaction

rhelmotcommented, Dec 18, 2015

Alright so the answer here is that this is a MS-DOS executable, which is not currently supported by CLE. It wouldn’t be too hard to write a loader for this format, since there’s no metadata and it’s basically a flat binary minus the header if I’m not mistaken.

0reactions

trietptmcommented, Mar 27, 2020

It would be nice to have angr CLE support for MS-DOS executable.

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