Hi all,
Don't know how many out there actually use HTA's, but I do, and am
looking at protecting javascript code associated with one I look after.
This HTA runs of a network drive, not a webpage.
Basically I've read that it's possible to compile js files and the like
to a "Resource file", and then access it using a call to the res://
protocol.
The trouble is I can't find any information on where to get the
resource compiler from, and how to actually create this resource dll,
does anyone know how to do this, or where I can get a tutorial to step
me through this.
I basically want to protect my js code (at least superficially) from
prying users. Because of the code complexity (the generates html
pages), I've had no luck with obfuscation, and it tends to break the
code irreparably.
Thanks for any help
Mike
15  6100 
runonthespot wrote: Hi all,
Don't know how many out there actually use HTA's, but I do, and am
looking at protecting javascript code associated with one I look after.
This HTA runs of a network drive, not a webpage.
Basically I've read that it's possible to compile js files and the like
to a "Resource file", and then access it using a call to the res://
protocol.
The trouble is I can't find any information on where to get the
resource compiler from, and how to actually create this resource dll,
does anyone know how to do this, or where I can get a tutorial to step
me through this.
I basically want to protect my js code (at least superficially) from
prying users. Because of the code complexity (the generates html
pages), I've had no luck with obfuscation, and it tends to break the
code irreparably.
Thanks for any help
Mike
If the browser compatibility is not an issue, you may use Microsoft
Script Encoder. It's not some long-key enscription, but still times
better than any home made obfuscator.
<http://www.microsoft.c om/downloads/details.aspx?Fa milyId=E7877F67-C447-4873-B1B0-21F0626A6329&di splaylang=en>
<http://msdn.microsoft. com/library/default.asp?url =/library/en-us/script56/html/seusingscripten coder.asp>
Alas, I've tried it but get an incomprehensibl e
"Script encoding failed" when I attempt to encode my js files.
I flailed around the net a bit, but haven't been able to find any
resource that gives me enough information to work out what I should be
looking for in my js pages that would make it fail.
.... but thanks for the suggestion!
Any idea where I can find a guide as to why/where the encoder might
fail, so I could potentially fix it?
Regards,
Mike
> Alas, I've tried it but get an incomprehensibl e "Script encoding failed" when I attempt to encode my js files.
Strange, it works just fine for me. Check your syntacs again:
<html>
<head>
<title>Microsof t Encoder Test</title>
<meta http-equiv="Content-Type" content="text/html;
charset=iso-8859-1">
<script language="JScri pt.Encode" src="sourceEnco ded.jse"></script>
</head>
<body bgcolor="#FFFFF F">
</body>
</html>
1) You must to use language declaration strictly this way:
language="JScri pt.Encode"
2) You have to manually assign .jse extention to ecoded file:
screnc plainScript.js encodedScript.j se
As sucky Google News seems do not allow attachments, I put all relevant
files here:
<http://www.geocities.c om/schools_ring/EncodingTest.zi p>
Google groups is a bit sucky, but at least I can access it from work
:-)
That worked fine, but the problem for me occurs in the encoding process
itself.
Using the Windows Source Encoder, and from the command line running the
code comes up with
"Encoding failed" when trying to create the jse file in the first
place. I can't seem to find anything on the net that explains the
limitations of the encoder.
Interestingly, I couldn't even compile the original source file you
provided ... I guess this is some kind of encoder failure on my box...
(Windows 2000, SP4)
"Scripting encoder object ("Scripting.Enc oder") failed on
c:\test\sourceP lain.js"
Thoughts?
Thanks for the trouble you're going to!
Aha!
Bingo. I figured out after some trawling that it might be a version
issue, and installed Windows Scripting Host 5.1, which seems to have
fixed the encoder.
Installing 5.5 on top of that and it still works-- must have been
something in 5.1 forgotten in 5.5...
Thanks for your help!
runonthespot wrote: Google groups is a bit sucky, but at least I can access it from work
:-)
That worked fine, but the problem for me occurs in the encoding process
itself.
Using the Windows Source Encoder, and from the command line running the
code comes up with
"Encoding failed" when trying to create the jse file in the first
place. I can't seem to find anything on the net that explains the
limitations of the encoder.
Interestingly, I couldn't even compile the original source file you
provided ... I guess this is some kind of encoder failure on my box...
(Windows 2000, SP4)
"Scripting encoder object ("Scripting.Enc oder") failed on
c:\test\sourceP lain.js"
Thoughts?
There is a number of "pseudo-screnc" programs in the Internet. Some
amateurs are hiding their home made obfuscators under the "loud name"
of the Microsoft product.
1) So first of all make sure thay you're using THAT screnc.exe. Go to
the address below and obtain a copy of the latest version. It's free
but requires a legal copy of Windows (runtime check will be done). I
hope it's not a problem? ;-)
Even if you are absolutely sure that you have THAT screnc, still
install the right copy from the scratch, please.
<http://www.microsoft.c om/downloads/details.aspx?Fa milyId=E7877F67-C447-4873-B1B0-21F0626A6329&di splaylang=en>
2) screnc is a DOC program, no Windows-interface is provide. To make
your future life easier, install it to some 8.3-compliant path.
c:\screnc would be a good choice.
3) Unpack my zip to c:\screnc and remove sourceEncoded.j se
4) Now run MS-DOS prompt and type:
cls<enter>
cd c:\screnc<enter >
screnc sourcePlain.js sourceEncoded.j se<enter>
sourceEncoded.j se should appear in your c:\screnc\ directory.
Tell me if it fails.
Thanks for the trouble you're going to!
No problem, I'm just charing what I already used for a while.
Plus *sometimes* I'm getting some sadistic plesure to talk about things
no one but IE can do :-)
Hi,
I too use HTA's a lot and use a resource DLL to store all my script
files and images.
To create a resource DLL you have to create a resource description
file. Then compile this file with a resource compiler which will give
you a .RES file. This file must be used in a linker to create a DLL
file. Check this website for the tools and more explanation. http://www.godevtool.com/
michael elias wrote: Hi,
I too use HTA's a lot and use a resource DLL to store all my script
files and images.
To create a resource DLL you have to create a resource description
file. Then compile this file with a resource compiler which will give
you a .RES file. This file must be used in a linker to create a DLL
file. Check this website for the tools and more explanation.
http://www.godevtool.com/
And another bist of this kind (but this I never tried):
you may install the free Microsoft .NET Framework, it has JScript
compiler in it (jsc.exe) This way you can compile .js files into .exe
or .dll
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