Andoryuuta/anti_decomp.py

## 41 changes: 41 additions & 0 deletions anti_decomp.py
@@ -0,0 +1,41 @@

    from xdis.load import load_module
from xdis.load import load_module

    from xdis.code import Code2Compat
from xdis.code import Code2Compat

    import uncompyle6
import uncompyle6

    import xdis.main
import xdis.main

    import sys
import sys


    if __name__ == "__main__":
if __name__ == "__main__":

        if len(sys.argv) <= 1:
    if len(sys.argv) <= 1:

            print("Usage: anti_decomp.py <some_py2_file.pyc>")
        print("Usage: anti_decomp.py <some_py2_file.pyc>")

            sys.exit(1)
        sys.exit(1)


        filename = sys.argv[1]
    filename = sys.argv[1]

        filename_base = filename.split('.')[0]
    filename_base = filename.split('.')[0]


        (version, timestamp, magic_int, co, pypy, source_size) = load_module(filename)
    (version, timestamp, magic_int, co, pypy, source_size) = load_module(filename)

        opc = xdis.main.get_opcode(version, pypy)
    opc = xdis.main.get_opcode(version, pypy)


        co_code = bytearray(len(co.co_code))
    co_code = bytearray(len(co.co_code))

        co_code[:] = co.co_code[:]
    co_code[:] = co.co_code[:]


        co_code.append(0x9) # Add a NOP
    co_code.append(0x9) # Add a NOP


        new_co = Code2Compat(
    new_co = Code2Compat(

            co.co_argcount,
        co.co_argcount,

            co.co_nlocals,
        co.co_nlocals,

            co.co_stacksize,
        co.co_stacksize,

            co.co_flags,
        co.co_flags,

            co_code,
        co_code,

            co.co_consts,
        co.co_consts,

            co.co_names,
        co.co_names,

            co.co_varnames,
        co.co_varnames,

            co.co_filename,
        co.co_filename,

            co.co_name,
        co.co_name,

            co.co_firstlineno,
        co.co_firstlineno,

            co.co_lnotab,
        co.co_lnotab,

            co.co_freevars,
        co.co_freevars,

            co.co_cellvars,
        co.co_cellvars,

        )
    )


        # Crashes with: Parse error at or near `None' instruction at offset -1
    # Crashes with: Parse error at or near `None' instruction at offset -1

        uncompyle6.main.decompile(version, new_co, sys.stdout)
    uncompyle6.main.decompile(version, new_co, sys.stdout)