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Unsupported opcode #235

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hexSophia opened this issue Feb 4, 2022 · 3 comments
Closed

Unsupported opcode #235

hexSophia opened this issue Feb 4, 2022 · 3 comments

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@hexSophia
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Unsupported opcode: JUMP_IF_NOT_EXC_MATCH
Unsupported opcode: RERAISE

Please fix them, pycdc really helping me to decompile malware

@ghost5egy
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121 JUMP_IF_NOT_EXC_MATCH_A
I found this in bytes/python_39.map
am trying to figure out how pycdc work
cause I have same issue you have
I hope I can find any documentation for pycdc code

@karjok
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karjok commented Jun 6, 2022

I also had a similar error last night, when I tried to decompile the pyc file compiled with python 3.10, the message "Unsupported opcode: BLA_BLA_BLA" appears.

I think this is an error because the pyc file that will be decoded is a bytecode file compiled with python 3.9 and above, and the opcodes that are not supported by pycdc are opcodes that just appeared in python version 3.9 and above.

so I tried reading the ASTree.cpp file and studying it, then I realized that the opcode that was printed as an error was not in the "case block" of the ASTree.cpp file.

I tried to change it a little by adding the opcodes printed in the error message into the case block (on line 1166)

case Pyc::JUMP_IF_NOT_EXC_MATCH_A:
case Pyc::RERAISE_A:

then rebuild it. I don't know what happened but it solved my problem when trying to decompile python 3.9 and above bytecode. everything is done!

@zrax
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zrax commented Feb 21, 2024

Duplicate #450

@zrax zrax closed this as completed Feb 21, 2024
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4 participants