Comments on: I just decompiled a decompiler so I could use it to decompile itself http://dougmccune.com/blog/2008/09/21/i-just-decompiled-a-decompiler-so-i-could-use-it-to-decompile-itself/ A blog about Adobe Flex Fri, 12 Mar 2010 15:25:08 +0000 http://wordpress.org/?v=abc hourly 1 By: tec. http://dougmccune.com/blog/2008/09/21/i-just-decompiled-a-decompiler-so-i-could-use-it-to-decompile-itself/comment-page-1/#comment-207702 tec. Tue, 31 Mar 2009 08:33:09 +0000 http://dougmccune.com/blog/2008/09/21/i-just-decompiled-a-decompiler-so-i-could-use-it-to-decompile-itself/#comment-207702 <strong>Nemo 440 Advanced Actionscript 3 disassembler...</strong> Nemo 440 Advanced ActionScript 3/ABC2/Flex 2/Flex 3/Flex 4/AIR disassembler via Nemo 440 by Vadim Melnik Home Page. It uses abcdump.as,  presumably written by Dan Schaffer from Adobe. Nemo 440 is a SWF disassembler that produces ActionScript Byte Code... Nemo 440 Advanced Actionscript 3 disassembler…

Nemo 440
Advanced ActionScript 3/ABC2/Flex 2/Flex 3/Flex 4/AIR disassembler
via Nemo 440 by Vadim Melnik Home Page.
It uses abcdump.as,  presumably written by Dan Schaffer from Adobe.
Nemo 440 is a SWF disassembler that produces ActionScript Byte Code…

]]> By: Yaison http://dougmccune.com/blog/2008/09/21/i-just-decompiled-a-decompiler-so-i-could-use-it-to-decompile-itself/comment-page-1/#comment-207391 Yaison Thu, 29 Jan 2009 15:34:39 +0000 http://dougmccune.com/blog/2008/09/21/i-just-decompiled-a-decompiler-so-i-could-use-it-to-decompile-itself/#comment-207391 "That code specifically checks if the package name matches one of the packages used in the Nemo 440 source code and excludes it from being processed! Mother fucker!" ROFLCOPTER!!! “That code specifically checks if the package name matches one of the packages used in the Nemo 440 source code and excludes it from being processed! Mother fucker!”

ROFLCOPTER!!!

]]> By: Mark Doberenz http://dougmccune.com/blog/2008/09/21/i-just-decompiled-a-decompiler-so-i-could-use-it-to-decompile-itself/comment-page-1/#comment-200372 Mark Doberenz Tue, 14 Oct 2008 20:06:52 +0000 http://dougmccune.com/blog/2008/09/21/i-just-decompiled-a-decompiler-so-i-could-use-it-to-decompile-itself/#comment-200372 So, I was wondering how hard it would be to create a Flex Builder plugin that could decompile a SWC/SWF. A use case would be that you didn't have any documentation on a library and wanted to see what the methods were and so you double-click the SWC in Flex Builder and get a listing of the methods in it. I suck at Java, so I'm not going to try it, but it could be useful. So, I was wondering how hard it would be to create a Flex Builder plugin that could decompile a SWC/SWF. A use case would be that you didn’t have any documentation on a library and wanted to see what the methods were and so you double-click the SWC in Flex Builder and get a listing of the methods in it.

I suck at Java, so I’m not going to try it, but it could be useful.

]]> By: Tom Gonzalez http://dougmccune.com/blog/2008/09/21/i-just-decompiled-a-decompiler-so-i-could-use-it-to-decompile-itself/comment-page-1/#comment-181544 Tom Gonzalez Mon, 22 Sep 2008 19:47:28 +0000 http://dougmccune.com/blog/2008/09/21/i-just-decompiled-a-decompiler-so-i-could-use-it-to-decompile-itself/#comment-181544 Doug, do we need to send the men in the white coats to come visit you after this? - Tom Doug, do we need to send the men in the white coats to come visit you after this?

- Tom

]]> By: Mario http://dougmccune.com/blog/2008/09/21/i-just-decompiled-a-decompiler-so-i-could-use-it-to-decompile-itself/comment-page-1/#comment-181508 Mario Mon, 22 Sep 2008 18:32:56 +0000 http://dougmccune.com/blog/2008/09/21/i-just-decompiled-a-decompiler-so-i-could-use-it-to-decompile-itself/#comment-181508 Cool! impressive as usual...BTW what happened to tileUI ? Cool! impressive as usual…BTW what happened to tileUI ?

]]> By: Ryan Campbell http://dougmccune.com/blog/2008/09/21/i-just-decompiled-a-decompiler-so-i-could-use-it-to-decompile-itself/comment-page-1/#comment-181451 Ryan Campbell Mon, 22 Sep 2008 16:37:26 +0000 http://dougmccune.com/blog/2008/09/21/i-just-decompiled-a-decompiler-so-i-could-use-it-to-decompile-itself/#comment-181451 You've got balls, I would have been worried using a decompiler to decompile a decompiler would cause the world to implode You’ve got balls, I would have been worried using a decompiler to decompile a decompiler would cause the world to implode

]]> By: Andrew http://dougmccune.com/blog/2008/09/21/i-just-decompiled-a-decompiler-so-i-could-use-it-to-decompile-itself/comment-page-1/#comment-181443 Andrew Mon, 22 Sep 2008 16:16:53 +0000 http://dougmccune.com/blog/2008/09/21/i-just-decompiled-a-decompiler-so-i-could-use-it-to-decompile-itself/#comment-181443 This is actually a common practice with compilers. Using a compiler to compile itself is a very good stress and quality test, the MSVC compiler is made this way. I would imagine decompilers are tested with a similar method :) This is actually a common practice with compilers. Using a compiler to compile itself is a very good stress and quality test, the MSVC compiler is made this way.

I would imagine decompilers are tested with a similar method :)

]]> By: Doug http://dougmccune.com/blog/2008/09/21/i-just-decompiled-a-decompiler-so-i-could-use-it-to-decompile-itself/comment-page-1/#comment-181393 Doug Mon, 22 Sep 2008 14:48:49 +0000 http://dougmccune.com/blog/2008/09/21/i-just-decompiled-a-decompiler-so-i-could-use-it-to-decompile-itself/#comment-181393 Oh, ha, after taking a look at Shigeru's post, I saw the link he has to the abcdump.as file in the tamarin project: http://hg.mozilla.org/tamarin-central/file/dddc6a8b13c3/utils/abcdump.as Turns out that that file is exactly what was used in Nemo 440, just refactored a bit and split into multiple files (the code is literally the same). SO I guess the Nemo 440 author didn't actually have that much work cut out for him, he just modified the abcdump.as file to get it working in his own AIR app. Oh, ha, after taking a look at Shigeru’s post, I saw the link he has to the abcdump.as file in the tamarin project: http://hg.mozilla.org/tamarin-central/file/dddc6a8b13c3/utils/abcdump.as

Turns out that that file is exactly what was used in Nemo 440, just refactored a bit and split into multiple files (the code is literally the same). SO I guess the Nemo 440 author didn’t actually have that much work cut out for him, he just modified the abcdump.as file to get it working in his own AIR app.

]]> By: Shigeru http://dougmccune.com/blog/2008/09/21/i-just-decompiled-a-decompiler-so-i-could-use-it-to-decompile-itself/comment-page-1/#comment-181313 Shigeru Mon, 22 Sep 2008 11:37:06 +0000 http://dougmccune.com/blog/2008/09/21/i-just-decompiled-a-decompiler-so-i-could-use-it-to-decompile-itself/#comment-181313 Here is my application for dumping/comparing classes in SWF. http://shigeru-nakagaki.com/index.cfm/2008/3/18/20080318-LibraryManager-Beta-is-released Also I made SWC called "Abc Dumper" to dump classes in SWF http://shigeru-nakagaki.com/index.cfm?Content=Projects thanks Here is my application for dumping/comparing classes in SWF.
http://shigeru-nakagaki.com/index.cfm/2008/3/18/20080318-LibraryManager-Beta-is-released
Also I made SWC called “Abc Dumper” to dump classes in SWF
http://shigeru-nakagaki.com/index.cfm?Content=Projects

thanks

]]> By: Erki Esken http://dougmccune.com/blog/2008/09/21/i-just-decompiled-a-decompiler-so-i-could-use-it-to-decompile-itself/comment-page-1/#comment-181244 Erki Esken Mon, 22 Sep 2008 08:44:25 +0000 http://dougmccune.com/blog/2008/09/21/i-just-decompiled-a-decompiler-so-i-could-use-it-to-decompile-itself/#comment-181244 Just a thought, it should be possible to unzip the swf contents, then find the bytecodes where "nemo440" string is and just change it to something else with hex editor, then zipping swf back up correctly again? This way you could avoid the 6 hours of trying to make decompiled code compile again properly. Or not? Just a thought, it should be possible to unzip the swf contents, then find the bytecodes where “nemo440″ string is and just change it to something else with hex editor, then zipping swf back up correctly again? This way you could avoid the 6 hours of trying to make decompiled code compile again properly. Or not?

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