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Old 08-24-2010, 11:04 AM   #1
izghitu
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encrypted executable scripts

Hi,

I have some bash and python scripts.

Is there any way to encrypt them but still be able to execute them encrypted?

Please help

Thanks
 
Old 08-24-2010, 01:34 PM   #2
win32sux
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What are you hoping to gain with this?
 
Old 08-24-2010, 01:38 PM   #3
izghitu
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I'm hoping to be able to give someone my scripts so he can execute them but can't see the contents of the scripts
 
Old 08-24-2010, 02:28 PM   #4
Les Windoze
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Don't know about bash (doubt it) and Python but you can with Perl.
Is there a security issue with the `someone' seeing your code?
 
Old 08-24-2010, 02:59 PM   #5
anomie
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My WAG is OP has some authentication credentials embedded in his scripts. That or he's hoping to hide proprietary code..?

Quote:
Originally Posted by izghitu
Is there any way to encrypt them but still be able to execute them encrypted?
Nope, and if you think about it the question doesn't make sense. Cipher text is pseudo-random garbage without the right key. You could decrypt the cipher text (e.g. in memory) and then execute the plaintext instructions.

Please describe in detail about your exact problem so that we can take a more informed stab at some solutions.
Last edited by anomie; 08-24-2010 at 03:01 PM.
 
Old 08-24-2010, 03:50 PM   #6
knudfl
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There is a well known tool, that "compiles" a shell script
into an ELF executable : shc.
http://asdfasdf.debian.net/~tar/free.../shc-3.8.7.tgz

http://blogs.koolwal.net/2009/01/20/...-based-system/

Is usually available with 'apt-get install shc' or # yum install shc
( RPM : The Rpmforge repo.)
..
Last edited by knudfl; 08-24-2010 at 03:51 PM.
 
Old 10-27-2010, 06:15 AM   #7
spayre
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i have tried compiling my script using the command below

shc -r -v -f <scriptname.sh>

when i ran the ./scriptname.sh.x, it works!

but when i copied the scriptname.sh.x to another linux machine, give it the permission (chmod 777), it throws an error...

-bash : scriptname.sh.x: cannot execute binary file

any ideas?
 
Old 11-04-2010, 01:17 PM   #8
vomplete
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Not sure, but I think that SHC must be installed on both machine (on "compiling machine" and others machines that execute these binary files)

bye

Quote:
Originally Posted by spayre View Post
i have tried compiling my script using the command below

shc -r -v -f <scriptname.sh>

when i ran the ./scriptname.sh.x, it works!

but when i copied the scriptname.sh.x to another linux machine, give it the permission (chmod 777), it throws an error...

-bash : scriptname.sh.x: cannot execute binary file

any ideas?
Last edited by vomplete; 11-04-2010 at 01:31 PM.
 
  


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