12-09-2013
It's worse than that -- the program runs the code through sh ultimately, so substituting a false sh can get the code directly.
Many people have been down this road before. Rube goldberg machines are not and cannot be the solution.
In short, if you don't want the customer to see the code, you can try either
1) Don't give it to them -- make it a service they access over the network
or
2) Put it on a machine you control, where they do not have root, and deny them access via file access permissions and isolate it further with sudo.
You cannot expect to protect a program by encryption when, by definition, the program contains the necessary code to decrypt itself in unencrypted form.
You cannot expect to protect anything run in plaintext from root.
If you rewrote your application in a language like C, decoding it would be a lot harder since quite a lot of information is thrown away in the compiling/linking process.
Last edited by Corona688; 12-09-2013 at 11:45 AM..
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