Prevent SWF files from being decompiled back into FLA format

Some programs such as Sothink SWF Decompiler may be used to
decompile the SWF files back into FLA format. Even the ActionScirpt
inside the SWF files can be decompiled as well! No one can even
tell the difference between the original FLA file and the compiled
FLA file! What can we do to prevent this from happening? I heard
that we may protect the SWF files by using ActionScript Obfuscator.
Is it true? How to do that? Please help, I must do something on
it.

Ng Jackie wrote:
> Some programs such as Sothink SWF Decompiler may be used
to decompile the SWF
> files back into FLA format. Even the ActionScirpt inside
the SWF file can be
> decompiled as well! No one can even tell the difference
between the original
> FLA file and the compiled FLA file! How can we do to
prevent this from
> happening? I heard that we may protect SWF files by
using ActionScript
> Obfuscator. Is it true? How to do that?
It's not true. SWF can't be protected.
There are companies trying to sale products claiming they can
protect SWF
file, don't fall for that.
In order to protect the file they jam the code and name of
variables and functions.
This however does not go w/o consequence. There is only how
much you can mess the
file up before the player will be unable to run it. Very
risky games if you do that.
One of the tools that was doing that, produced files which
stop working with next
player upgrade. From version 7 to 8. Than you just can't open
it anymore.
Secondly, as soon as such tool appear, the producers of
decompilers provide antidotes.
Upgrades with work around for the protection.
Best Regards
Urami
!!!!!!! Merry Christmas !!!!!!!
Happy New Year
<urami>
If you want to mail me - DO NOT LAUGH AT MY ADDRESS
</urami>

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Protecting swf files from being decompiled

At the end of the day, our flex apps are deployed as swf
files which have the potential to be decomplied and thereby our
intellectual properties lost. There are tools in the market which
claim to secure the swf files from being decompiled. Are these
tools live up to their claims? Is it worthwhile to spend money on
these tools? Would the protected swf become harder to deployed? Any
good products already available in this line? Please point out
some. Thx.

Most of the tools I have seen are geared towards extracting
resources from swf's. I use one myself (eltima.com) for
"harvesting" manufacturers content for my motorcycle dealers. They
are authorized to use this content, but finding someone at Yamaha
of Kawasaki or any of the majors who even knows where to find these
resources is next to impossible. I have also used it to learn from
by viewing scripts, but as you say, at the end of the day, I think
the concepts and best practices are about the only thing worth
taking away from others efforts, not the code.
Unlocking a protected file can be done as well and I remember
using a product over a year ago to get at the scripts within an swf
(I wanted the URL's that pointed to media - it was legal for me to
do this). It ran from the command line and output the scripts.
There aren't too many of these types of programs to be found, but
they exist.
My personal opinion is that it's not worth the effort. My
java classes can be decompiled and if someone wants to go to that
trouble, more power to them. To my knowledge, there isn't anything
out there yet that is perfect for backwards engineering an swf into
an MXML file, but a competitor of FLASH Decompiler says that they
can decompile Adobe 9 PLAYER swf's. For what it's worth, I plan on
posting the majority of my code on my flexdev.org site once I get
it established.
For people who make components for sale, this could be an
issue of stolen revenue if the decompilers get sophisticated enough
to reverse engineer the swc into a usable MXML file. I would be
against anyone who stole code for this purpose, for sure.

Prevent OST file from being excluded from workstation backups

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Preventing .jpeg files from being generated/saved

I'm trying to capture a graph on the front panel into an .html file using the case structure in the attached .vi. The case structure works but I keep getting a jpeg file in the form of CT0327xxxxxxx.jpeg saved in the C:\vibration data directory each time a capture is performed. How do I keep this image from either being generated or saved? Thanks in advance.
Message Edited by GSO on 09-12-2007 10:33 AM

Sorry. Here it is.
Message Edited by Dennis Knutson on 09-12-2007 11:18 AM
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How to protect class files from being decompiled?

any ideas
guide me

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Any ideas how to fix an "unexpected error" that is preventing my files from being converted?

I just bought this program to convert PDF files and it can't due to an "unexpected error". I'm pretty sure I just wasted my money but am hoping maybe someone has an answer!

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Try changing the filename extension to ".dv"
Here's an interesting one: http://discussions.apple.com/thread.jspa?messageID=6172027
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How do I prevent files from being backed up to iCloud and iTunes?

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How can I prevent a PDF file from being copied, printed or downloaded? Students should only be able to view the text and and not distribute it in any way.

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Is there a way to prevent a PDF file from being forwarded?

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How Can I protect my swf files from decompiling / saving

I have navigated through the internet for a long time now but
could not find the solution to my problem which is "how to protect
my swf file from decompiling/saving"?
I know that it CAN BE DONE and here is an example of a file
on the internet that cannot be saved or decompiled using any
software that I have come across (ie:SOTHINK decompiler, saveflash)
http://www.3dinternet.com/video.swf
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Thanks
Hagop

Hagop,
> I have navigated through the internet for a long time
now but
> could not find the solution to my problem which is "how
to
> protect my swf file from decompiling/saving"?
There is no way to protect your SWF from decompiling. Any
commercial
software on the market can be decompiled -- including the
Flash authoring
tool and Photoshop, for example -- which is why softare
generally ships with
an end user license agreement (EULA) that expects you to
agree not to
decompile or reverse engineer your purchase.
Most Flash content (other than RTMP requests for video, for
example) are
HTTP requests, which by nature means the content is
downloaded to your hard
drive, just like HTML documents, CSS files, JPGs, and GIFs.
Your browser
requests the files, downloads them to your hard drive, then
displays them
from your local copy.
> I know that it CAN BE DONE and here is an example of a
> file on the internet that cannot be saved or decompiled
using
> any software that I have come across
What you've seen, then, is merely the result of software
that uses
unknown (to you or to your sofware) encryption/obfuscation
algorithms. Keep
trying, and you'll eventually nail it.
At best, you can use obfuscators to temporarily deter a
certain segment
of the decompiling-inclined population.
David Stiller
Adobe Community Expert
Dev blog,
http://www.quip.net/blog/
"Luck is the residue of good design."

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Most of the tools I have seen are geared towards extracting
resources from swf's. I use one myself (eltima.com) for
"harvesting" manufacturers content for my motorcycle dealers. They
are authorized to use this content, but finding someone at Yamaha
of Kawasaki or any of the majors who even knows where to find these
resources is next to impossible. I have also used it to learn from
by viewing scripts, but as you say, at the end of the day, I think
the concepts and best practices are about the only thing worth
taking away from others efforts, not the code.
Unlocking a protected file can be done as well and I remember
using a product over a year ago to get at the scripts within an swf
(I wanted the URL's that pointed to media - it was legal for me to
do this). It ran from the command line and output the scripts.
There aren't too many of these types of programs to be found, but
they exist.
My personal opinion is that it's not worth the effort. My
java classes can be decompiled and if someone wants to go to that
trouble, more power to them. To my knowledge, there isn't anything
out there yet that is perfect for backwards engineering an swf into
an MXML file, but a competitor of FLASH Decompiler says that they
can decompile Adobe 9 PLAYER swf's. For what it's worth, I plan on
posting the majority of my code on my flexdev.org site once I get
it established.
For people who make components for sale, this could be an
issue of stolen revenue if the decompilers get sophisticated enough
to reverse engineer the swc into a usable MXML file. I would be
against anyone who stole code for this purpose, for sure.

Loading local swf files from Application Dir (ios)

Hi Guys,
I would like to load additional local swf files to my ios release build but I am confused a little bit because of the new API changes.
As far as I know at the moment (from Air 3.7 or newer) it is allowed to load local swf files that contains compiled actionscript both from local folder and from a predefined remote host as well.
My assumption based on this article:
http://blogs.adobe.com/airodynamics/2013/03/08/external-hosting-of-secondary-swfs-for-air- apps-on-ios/
I created the text file to include all of my local swf file names and created the following node in the application.xml:
<iPhone>
<externalSwfs>assets/SampleSWFInfoFile.txt</externalSwfs>
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When I compile the release build (ipa) using command line adt, it converts all of my local swfs into the stripped swfs which is perfect, but even though I include all the swfs in the compiler command, it puts only the SampleSWFInfoFile.txt file into the assets folder in the ipa but not the swf files.
I assume, it thinks I will load these files from an external host, but I would like to include them in the app itself.
I tried to copy the stripped swf files from the externalStrippedSwfs folder and comment the <externalSwfs>assets/SampleSWFInfoFile.txt</externalSwfs> node in the application.xml and compile it and this way it puts the swf files into the ipa, but when I try to install and launch the app it crashes and when I test it using Flash Builder it shows an error message
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Thank you for your help in advance!

You're publishing in AOT mode as long as you use one of these:
The AIR Developer Tool or ADT has targets that lets you package apps either for the AOT mode or Interpreter mode. The targets for packaging in AOT mode are ipa-app-store, ipa-ad-hoc, ipa-test and ipa-debug.
Flash Pro CS6 and Flash Builder automate this process pretty well so it's invisible but the SWF loads and executes code just fine for me when directly published.
If I take it to command line I can use this to compile successfully (iPad test app):
adt -package -target ipa-ad-hoc -storetype pkcs12 -keystore my.p12 -provisioning-profile my.mobileprovision NameOfApp.ipa NameOfApp-app.xml NameOfApp.swf iTunesArtwork iTunesArtwork@2x AppIconsForPublish swfs/swfs.txt swfs/GenerateText.swf
I at least include generic icons in there but I made a 'swfs' folder and placed 'swfs.txt' and 'GenerateText.swf' in there. The SWF uses code to randomly generate text and changes every second using a Timer. I load it in using the same code you do with the ApplicationDomain.currentDomain context. I see the SWF appear and text start randomly changing.
As I compile there's a folder generated called 'externalStrippedSwfs' with the stripped SWF in there.
One thing to note is I do not supply <externalSwfs>swfs/swfs.txt</externalSwfs> in my iPhone settings. If I do that it doesn't work. I supply the path to the text file containing the SWF I want to be stripped to adt itself along with the SWFs I want stripped and it takes care of the rest.

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Prevent SWF files from being decompiled back into FLA format

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