Obfuscate python code

[bercobeute]

Create a SIS file does not prevent users from viewing the source code (the python code can be found somewhere in the installation directory). Is there a way I can obfuscate the source code in a SIS file?

[jplauril]

You could compile your code into bytecode (.pyc files). It doesn't obfuscate it as well as on most other languages, but it's at least something.

[cyke64]

Hello ,

Decompyle can decompile .pyc file !
But try this open source project pyobfuscator !
http://freshmeat.net/projects/pyobfuscate/

[bercobeute]

pyobfuscate is nice, but it doesn't make the code completely unreadable. Isn't the pyc route safer?

[simo.salminen]

bercobeute, the pyobfuscate makes decompiled source harder to read.

But anyway, usually there is no point to worry about this. Even if you develop in java or c++, people can decompile and see your algorithms.

I suggest that you distribute .pyo files. If somebody decompiles them, they won't see the comments nor docstrings. This gives about the same level of protection as distributing java or c++ programs (well, python readibility helps to reverse-engineer, so maybe it is bit easier with python).

[h0pe_]

Hello ,

Decompyle can decompile .pyc file !
But try this open source project pyobfuscator !
http://freshmeat.net/projects/pyobfuscate/

could someone help me on how to install and use this project please?
i got this error while installing it

C:\pyobfuscate>setup.py install
running install
running build
running install_data
Traceback (most recent call last):
File "C:\pyobfuscate\setup.py", line 17, in <module>
data_files=[('/usr/bin', ['pyobfuscate'])]
File "C:\Python25\lib\distutils\core.py", line 151, in setup
dist.run_commands()
File "C:\Python25\lib\distutils\dist.py", line 974, in run_comm
self.run_command(cmd)
File "C:\Python25\lib\distutils\dist.py", line 994, in run_comm
cmd_obj.run()
File "C:\Python25\lib\distutils\command\install.py", line 510,
self.run_command(cmd_name)
File "C:\Python25\lib\distutils\cmd.py", line 333, in run_comma
self.distribution.run_command(command)
File "C:\Python25\lib\distutils\dist.py", line 994, in run_comm
cmd_obj.run()
File "C:\Python25\lib\distutils\command\install_data.py", line
dir = convert_path(f[0])
File "C:\Python25\lib\distutils\util.py", line 138, in convert_
raise ValueError, "path '%s' cannot be absolute" % pathname
ValueError: path '/usr/bin' cannot be absolute

[cyke64]

Hello Hope

Easy ! Comment line with data_files= in setup.py

setup install

pyobfuscate

pyobfuscate ex1.py >ex1_hidden.py

Result :

import appuifw
import e32
import telephone
if 64 - 64: i11iIiiIii
if 65 - 65: O0 / iIii1I11I1II1 % OoooooooOO - i1IIi
appuifw . app . title = u'Incoming call Test'
if 73 - 73: II111iiii
def IiII1IiiIiI1 ( state ) :
 appuifw . note ( u"Chiamato" , "info" )
 if 40 - 40: oo * OoO0O00
def IIiIiII11i ( state ) :
 appuifw . note ( unicode ( '0:' + str ( state [ 0 ] ) + ';1:' + str ( state [ 1 ] ) ) , "info" )
 if ( state [ 0 ] == telephone . EStatusRinging ) :
  IiII1IiiIiI1 ( state )
  if 51 - 51: oOo0O0Ooo * I1ii11iIi11i
  if 48 - 48: oO0o / OOooOOo / I11i / Ii1I
def quit ( ) :
 IiiIII111iI . signal ( )
 if 34 - 34: iii1I1I / O00oOoOoO0o0O . O0oo0OO0 + Oo0ooO0oo0oO . I1i1iI1i - II
appuifw . app . exit_key_handler = quit
IiiIII111iI = e32 . Ao_lock ( )
if 100 - 100: i1IIi . I1i1iI1i / Oo0ooO0oo0oO * OoooooooOO + iii1I1I * I11i
telephone . call_state ( IIiIiII11i )
#telephone.incoming_call()
if 99 - 99: O0oo0OO0 . Ii1I / iIii1I11I1II1 * iIii1I11I1II1
IiiIII111iI . wait ( )

Have you recognized this code ?

BR
Cyke64

[h0pe_]

hello cyke64,thanks for replying
i still can't get it ,i'm new to this
could you explain more please and how to convert .pyc file to .pyo!

[h0pe_]

cyke64 you mean i should add that 1st code to setup.py?
please explain

[cyke64]

cyke64 you mean i should add that 1st code to setup.py?
please explain

By commenting code I mean add a # character at the beginning of this line in setup.py

BR
Cyke64

[h0pe_]

By commenting code I mean add a # character at the beginning of this line in setup.py

BR
Cyke64

i still can't install it
here is the setup.py file
http://rapidshare.com/files/85388473/setup.zip.html
can you add that code to it?

[cyke64]

i still can't install it
here is the setup.py file
http://rapidshare.com/files/85388473/setup.zip.html
can you add that code to it?

Okay I have downloaded your file ...
The following code works for me ...

#!/usr/bin/env python

DESCRIPTION = """\
Python source code obfuscator
"""

from distutils.core import setup

setup (name = "pyobfuscate",
       version = "0.3",
       license = "GPL",
       description = "pyobfuscate",
       long_description = DESCRIPTION,
       author = "Peter Astrand",
       author_email = "astrand@cendio.com",
       url = "http://www.lysator.liu.se/~astrand/projects/pyobfuscate/",
       #data_files=[('/usr/bin', ['pyobfuscate'])]
       )

Do you use M$ windows or Linux or MAC ?

BR
Cyke64

[h0pe_]

i'm using windows & i always get this error
File "C:\Python25\lib\distutils\util.py", line 138, in convert_
raise ValueError, "path '%s' cannot be absolute" % pathname
ValueError: path '/usr/bin' cannot be absolute
with the code you posted i got
running install
running build
then nothing happend

[cyke64]

i'm using windows & i always get this error
File "C:\Python25\lib\distutils\util.py", line 138, in convert_
raise ValueError, "path '%s' cannot be absolute" % pathname
ValueError: path '/usr/bin' cannot be absolute
with the code you posted i got
running install
running build
then nothing happend

I'm using also Windows and here's the result of installation :

C:\app\pyobfuscate-0.3>setup install
running install
running build
running install_egg_info
Removing C:\Python25\Lib\site-packages\pyobfuscate-0.3-py2.5.egg-info
Writing C:\Python25\Lib\site-packages\pyobfuscate-0.3-py2.5.egg-info

BR
Cyke64

[h0pe_]

but i don't have microsoft c++ compiler
i installed mingw32 then uninstalled it