Dissasembling failing in xasm format
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调研方向
Reproduce the failure with pydisasm -F xasm ./file.pyc, then inspect xdis/disasm.py, especially disassemble_file and disco_loop_asm_format around the recursive call and assertion. Check how duplicate listcomp names enter fn_name_map; done means the xasm disassembly completes without the reported AssertionError.
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描述
Hi,
I'm currently trying to extract the bytecode, edit a few strings and assemble it back to a .pyc file.
Pydisasm without any flags work just fine but as soon as I try to dissamble the file with Pydisasm -F xasm ./file.pyc it fails with the following traceback:
Traceback (most recent call last):
File "/usr/local/bin/pydisasm", line 33, in <module>
sys.exit(load_entry_point('xdis', 'console_scripts', 'pydisasm')())
File "/usr/lib/python3/dist-packages/click/core.py", line 1128, in __call__
return self.main(*args, **kwargs)
File "/usr/lib/python3/dist-packages/click/core.py", line 1053, in main
rv = self.invoke(ctx)
File "/usr/lib/python3/dist-packages/click/core.py", line 1395, in invoke
return ctx.invoke(self.callback, **ctx.params)
File "/usr/lib/python3/dist-packages/click/core.py", line 754, in invoke
return __callback(*args, **kwargs)
File "/root/python-xdis/xdis/bin/pydisasm.py", line 72, in main
disassemble_file(path, sys.stdout, format)
File "/root/python-xdis/xdis/disasm.py", line 329, in disassemble_file
disco(
File "/root/python-xdis/xdis/disasm.py", line 160, in disco
disco_loop_asm_format(opc, version_tuple, co, real_out, {}, set([]))
File "/root/python-xdis/xdis/disasm.py", line 220, in disco_loop_asm_format
disco_loop_asm_format(
File "/root/python-xdis/xdis/disasm.py", line 220, in disco_loop_asm_format
disco_loop_asm_format(
File "/root/python-xdis/xdis/disasm.py", line 249, in disco_loop_asm_format
assert mapped_name not in fn_name_map
AssertionError
I also printed out the vars from the assert:
mapped_name='listcomp_0x7f3d301932f0'
fn_name_map={'listcomp_0x7f3d30192ff0': 'listcomp', 'listcomp_0x7f3d301932f0': 'listcomp'}
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