对Python代码进行保护

最新推荐文章于 2024-08-20 17:12:28 发布

转载最新推荐文章于 2024-08-20 17:12:28 发布 · 228 阅读

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原文链接：https://my.oschina.net/alazyer/blog/737961

文章标签：

#python #git

本文介绍了一种通过定制Python解释器并增加新的opcode来实现代码混淆的方法，以保护Python源代码不被轻易逆向解析。

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** Python代码应该是公开的**, 但是由于各种原因(主要是公司利益考虑)需要对代码进行混淆, 以防止他人获取源代码, 窃取成果.

参考资料:

[1]. Protecting a Python codebase - part1

[2]. Protecting a Python codebase - part2

[3]. Protecting a Python codebase - part3

[4]. Building an obfuscated Python interpreter: we need more opcodes

To protect a python codebase, just need to:

customize python interpreter
compile the sourcecode
distribute the bytecode

To customize python interpreter, just need to:

git clone git@github.com:citrusbyte/python-obfuscation.git
python python-obfuscation/custom_interpreter/opcodes/scramble-opcodes.py --python-source PYTHON_SRC_DIR
cd PYTHON_SRC_DIR
./configure --enable-shared --prefix=/opt/python LDFLAGS=-Wl,-rpath=/opt/python/lib
make && make install

To create more opcode, just need to(copy from [4]):

add line in Include/opcode.h, such as #define LOAD_FAST_ZERO_LOAD_CONST 148
update the big switch in Python/ceval.c

case LOAD_FAST_ZERO_LOAD_CONST:
  x = GETLOCAL(0);
  if (x != NULL) {
    Py_INCREF(x);
    PUSH(x);
    x = GETITEM(consts, oparg);
    Py_INCREF(x);
    PUSH(x);
    goto fast_next_opcode;
}
format_exc_check_arg(PyExc_UnboundLocalError,
                     UNBOUNDLOCAL_ERROR_MSG,
                     PyTuple_GetItem(co->co_varnames, oparg));
break;

转载于:https://my.oschina.net/alazyer/blog/737961