If you legitimately lost your source code and only have the obfuscated version, consider contacting the PyArmor developers or using a forensic memory dump. Some commercial forensics firms offer recovery services for a fee—this is legal if you own the copyright.
Python executes code frame by frame (via _PyEval_EvalFrameDefault). A custom unpacker will inject a Cython or ctypes hook into the running process to intercept every frame.
(Note: this is a conceptual outline; implement only with authorization.) pyarmor unpacker upd
When a frame is evaluated, the f_code attribute contains the decrypted code object. The unpacker iterates through all loaded modules, clones the code object, and writes it to a .pyc file.
Disclaimer: This section is for educational purposes to understand the mechanism. Unauthorized unpacking of software you do not own is illegal in most jurisdictions. If you legitimately lost your source code and
Assumed Scenario: You have a legitimate encrypted .py file that you lost the source code for, or you are a security researcher analyzing malware.
Typical workflow for an unpacker (e.g., pyarmor_unpacker_upd.py): Protected module files (commonly
# 1. Prepare environment (preferably Python 3.9 or 3.10)
pip install uncompyle6 pycryptodome
Despite PyArmor's robust protections, the cat-and-mouse game between protection tools and unpackers continues. Over time, various unpackers have been developed to bypass PyArmor's protections, allowing for the extraction of the original Python source code. These unpackers exploit vulnerabilities or work around the protections by understanding how PyArmor operates internally.