Reacties op: Reverse Engineering with Reflector and Reflexil http://www.cumps.be/reverse-engineering-with-reflector-and-reflexil/ Living my life... Sat, 12 Dec 2009 22:49:53 +0100 http://wordpress.org/?v=2.8.4 hourly 1 Door: David Cumps http://www.cumps.be/reverse-engineering-with-reflector-and-reflexil/comment-page-1/#comment-429 David Cumps Wed, 30 Jul 2008 17:47:29 +0000 http://blog.cumps.be/reverse-engineering-with-reflector-and-reflexil/#comment-429 Kemar, check this out: http://blog.monstuff.com/archives/000058.html Found via google ".net change il runtime", search a bit more along those lines and I'm sure you'll find more info :) Greets Kemar, check this out: http://blog.monstuff.com/archives/000058.html

Found via google “.net change il runtime”, search a bit more along those lines and I’m sure you’ll find more info :)

Greets

]]> Door: kemar http://www.cumps.be/reverse-engineering-with-reflector-and-reflexil/comment-page-1/#comment-428 kemar Wed, 30 Jul 2008 11:50:57 +0000 http://blog.cumps.be/reverse-engineering-with-reflector-and-reflexil/#comment-428 Hi there. Great article. I have som question about .net apps. I need to write a loader for .net program. That loader changes code in memory. It is possible to write such a loader like for native win32 app, but for .net ? If you could push me right way I'll be gratefull. I have experiences only with win32 native applications Thx kemar Hi there. Great article. I have som question about .net apps. I need to write a loader for .net program. That loader changes code in memory. It is possible to write such a loader like for native win32 app, but for .net ? If you could push me right way I’ll be gratefull. I have experiences only with win32 native applications

Thx kemar

]]> Door: Brian Chavez http://www.cumps.be/reverse-engineering-with-reflector-and-reflexil/comment-page-1/#comment-427 Brian Chavez Thu, 15 Nov 2007 04:57:45 +0000 http://blog.cumps.be/reverse-engineering-with-reflector-and-reflexil/#comment-427 I love it. Bringing back memories indeed. I love it. Bringing back memories indeed.

]]> Door: David Cumps » Obfuscation - Making Reverse Engineering Harder http://www.cumps.be/reverse-engineering-with-reflector-and-reflexil/comment-page-1/#comment-425 David Cumps » Obfuscation - Making Reverse Engineering Harder Sat, 29 Sep 2007 15:49:35 +0000 http://blog.cumps.be/reverse-engineering-with-reflector-and-reflexil/#comment-425 [...] a previous article I have demonstrated how easy it is to decompile and reverse engineer .NET assemblies using Reflector and Reflexil. I've also shown that applying a strong name to your assembly does not [...] [...] a previous article I have demonstrated how easy it is to decompile and reverse engineer .NET assemblies using Reflector and Reflexil. I’ve also shown that applying a strong name to your assembly does not [...]

]]> Door: David Cumps http://www.cumps.be/reverse-engineering-with-reflector-and-reflexil/comment-page-1/#comment-426 David Cumps Sat, 29 Sep 2007 10:43:19 +0000 http://blog.cumps.be/reverse-engineering-with-reflector-and-reflexil/#comment-426 I tried it using sn.exe -Vr and it kept throwing an error, tried it as an admin and non admin. I'm running it on vista. I'm using the other way now, with another tool however, but the same goal, screenshot + links: http://blog.cumps.be/code-signing-as-reverse-engineering-protection/ I tried it using sn.exe -Vr and it kept throwing an error, tried it as an admin and non admin. I’m running it on vista.

I’m using the other way now, with another tool however, but the same goal, screenshot + links: http://blog.cumps.be/code-signing-as-reverse-engineering-protection/

]]> Door: Sébastien LEBRETON http://www.cumps.be/reverse-engineering-with-reflector-and-reflexil/comment-page-1/#comment-419 Sébastien LEBRETON Wed, 26 Sep 2007 17:11:38 +0000 http://blog.cumps.be/reverse-engineering-with-reflector-and-reflexil/#comment-419 Yes it works. Tested with a fully signed assembly. Have you tried to manualy register the assembly for verification skipping, using sn.exe tool in the SDK? (perhaps there is a bug somewhere in Reflexil). Another way: Some tools allows you to remove the signed part. Check http://code.google.com/p/clsn/ Yes it works. Tested with a fully signed assembly.

Have you tried to manualy register the assembly
for verification skipping, using sn.exe tool in the SDK? (perhaps there is a bug somewhere in Reflexil).

Another way:
Some tools allows you to remove the signed part.
Check http://code.google.com/p/clsn/

]]> Door: David Cumps http://www.cumps.be/reverse-engineering-with-reflector-and-reflexil/comment-page-1/#comment-421 David Cumps Tue, 25 Sep 2007 07:08:16 +0000 http://blog.cumps.be/reverse-engineering-with-reflector-and-reflexil/#comment-421 In my other post (see link above in comments), I tested this and couldn't get it to work, possibly due to verification skipping not working? Have you tried this with a fully signed assembly? (eg, not a delayed signed one) In my other post (see link above in comments), I tested this and couldn’t get it to work, possibly due to verification skipping not working?

Have you tried this with a fully signed assembly? (eg, not a delayed signed one)

]]> Door: Sebastien LEBRETON http://www.cumps.be/reverse-engineering-with-reflector-and-reflexil/comment-page-1/#comment-420 Sebastien LEBRETON Tue, 25 Sep 2007 06:47:21 +0000 http://blog.cumps.be/reverse-engineering-with-reflector-and-reflexil/#comment-420 About strong name support, you can easily alter signed assemblies. When saved they are in the “delay signed” state, so you can re-sign them (if you have the key) or register assembly for verification skipping with the Strong Name Utility provided in the .NET SDK (so you can use it without any key) Signed assembly support screenshot: http://www.codeproject.com/dotnet/reflexil.asp Regards About strong name support, you can easily alter signed assemblies. When saved they are in the “delay signed” state, so you can re-sign them (if you have the key) or register assembly for verification skipping with the Strong Name Utility provided in the .NET SDK (so you can use it without any key)

Signed assembly support screenshot:
http://www.codeproject.com/dotnet/reflexil.asp

Regards

]]> Door: Chua Wen Ching http://www.cumps.be/reverse-engineering-with-reflector-and-reflexil/comment-page-1/#comment-423 Chua Wen Ching Mon, 17 Sep 2007 06:43:05 +0000 http://blog.cumps.be/reverse-engineering-with-reflector-and-reflexil/#comment-423 Hi, if you do check at codeproject articles back in 2004 I had written 3 articles on this. Maybe you can check it out. However do look at article 3 especially as initially I thought I had the concepts right, but I got it wrong later. Check at the discussion, probably you can understand it better. http://www.codeproject.com/dotnet/NeCoder01.asp http://www.codeproject.com/dotnet/NeCoder02.asp http://www.codeproject.com/dotnet/NeCoder03.asp Hi, if you do check at codeproject articles back in 2004 I had written 3 articles on this. Maybe you can check it out. However do look at article 3 especially as initially I thought I had the concepts right, but I got it wrong later. Check at the discussion, probably you can understand it better.

http://www.codeproject.com/dotnet/NeCoder01.asp
http://www.codeproject.com/dotnet/NeCoder02.asp
http://www.codeproject.com/dotnet/NeCoder03.asp

]]> Door: David Cumps http://www.cumps.be/reverse-engineering-with-reflector-and-reflexil/comment-page-1/#comment-424 David Cumps Sat, 15 Sep 2007 21:39:09 +0000 http://blog.cumps.be/reverse-engineering-with-reflector-and-reflexil/#comment-424 Have a look at my first response Gregory: http://blog.cumps.be/code-signing-as-reverse-engineering-protection/ Sadly enough, code signing is no usable solution against protecting your code from reverse engineering. Have a look at my first response Gregory: http://blog.cumps.be/code-signing-as-reverse-engineering-protection/

Sadly enough, code signing is no usable solution against protecting your code from reverse engineering.

]]> Door: David Cumps » Code Signing as Reverse Engineering Protection http://www.cumps.be/reverse-engineering-with-reflector-and-reflexil/comment-page-1/#comment-422 David Cumps » Code Signing as Reverse Engineering Protection Sat, 15 Sep 2007 21:27:11 +0000 http://blog.cumps.be/reverse-engineering-with-reflector-and-reflexil/#comment-422 [...] my last post I spoke about reverse engineering .NET assemblies upon which Gregory asked how to protect his code against [...] [...] my last post I spoke about reverse engineering .NET assemblies upon which Gregory asked how to protect his code against [...]

]]> Door: David Cumps http://www.cumps.be/reverse-engineering-with-reflector-and-reflexil/comment-page-1/#comment-417 David Cumps Thu, 13 Sep 2007 18:38:22 +0000 http://blog.cumps.be/reverse-engineering-with-reflector-and-reflexil/#comment-417 As far as I know, I don't think so. There are lots of obfuscators out there which will transform your code to something less readable. But it's still security through obfuscation, which isn't security at all :) I'll be playing with assembly signing tomorrow and post a follow up, since I believe signing your assembly will prevent this. As far as I know, I don’t think so.

There are lots of obfuscators out there which will transform your code to something less readable. But it’s still security through obfuscation, which isn’t security at all :)

I’ll be playing with assembly signing tomorrow and post a follow up, since I believe signing your assembly will prevent this.

]]> Door: Gregory http://www.cumps.be/reverse-engineering-with-reflector-and-reflexil/comment-page-1/#comment-418 Gregory Thu, 13 Sep 2007 17:15:45 +0000 http://blog.cumps.be/reverse-engineering-with-reflector-and-reflexil/#comment-418 Amazing! Is there a way, as programmer to protect your source against such things ? :) Amazing! Is there a way, as programmer to protect your source against such things ? :)

]]>