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Knuddlbaer
Joined: 30 Mar 2011
Posts: 10
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 Posted: Wed Mar 30, 2011 1:48 pm Post subject: PInvokeStackImbalance on using tamper protection |
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Hi!
If i use "I want to add tamper protection", i got an MDA:
PInvokeStackImbalance wurde erkannt.
Message: Ein Aufruf an die PInvoke-Funktion "xyz::–" hat das Gleichgewicht des Stapels gestört. Wahrscheinlich stimmt die verwaltete PInvoke-Signatur nicht mit der nicht verwalteten Zielsignatur überein. Überprüfen Sie, ob die Aufrufkonvention und die Parameter der PInvoke-Signatur mit der nicht verwalteten Zielsignatur übereinstimmen.
Is this an error from MDA or an problem of tamper protection?
VS: 2010 SP1
OS: Windows 7 x64
I debugged an exe that using an smartassembled dll with tamper protection. |
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Brian Donahue
Joined: 23 Aug 2004
Posts: 6369
Location: Red Gate Software
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| Posted: Thu Mar 31, 2011 5:34 pm Post subject: |
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I couldn't say what's going on there. PInvokeStackImbalance happens when the PInvoke signature does not match the signature of the unmanaged DLL. Of all the things SA does, I can't imagine it will change any PInvoke signatures.
_________________
Brian Donahue
Technical Support
Red Gate Software Ltd.
44 (0)870 160 0037 ext 8521
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Knuddlbaer
Joined: 30 Mar 2011
Posts: 10
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| Posted: Thu Mar 31, 2011 9:48 pm Post subject: |
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I was not able to reproduce this problem in an small project.
I'll write here if i found my error or build an small example.
Best regards
Michael |
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Brian Donahue
Joined: 23 Aug 2004
Posts: 6369
Location: Red Gate Software
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| Posted: Fri Apr 01, 2011 9:22 am Post subject: |
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...or if the arguments that got to the PInvoke call aren't the right length. Maybe string encryption is messing with some of the input variables or something.
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Brian Donahue
Technical Support
Red Gate Software Ltd.
44 (0)870 160 0037 ext 8521
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Knuddlbaer
Joined: 30 Mar 2011
Posts: 10
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Brian Donahue
Joined: 23 Aug 2004
Posts: 6369
Location: Red Gate Software
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| Posted: Fri Apr 01, 2011 12:43 pm Post subject: |
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I have many projects using SmartAssembly that have Pinvoke calls and they all work. I am looking at your project. The bit that fails is doing "something" with checking the key so I think you may have a special case where you may not be able to use tamper protection.
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Brian Donahue
Technical Support
Red Gate Software Ltd.
44 (0)870 160 0037 ext 8521
US and CAN 1-866-RED GATE ext 8521 |
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Brian Donahue
Joined: 23 Aug 2004
Posts: 6369
Location: Red Gate Software
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| Posted: Fri Apr 01, 2011 12:47 pm Post subject: |
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Yes, I get the StackImbalance even before using SmartAssembly. All I did was make my own strong-naming key and signed with that. I had even changed the path you see in Program.cs.
What does this code do, anyway?
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Technical Support
Red Gate Software Ltd.
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Knuddlbaer
Joined: 30 Mar 2011
Posts: 10
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| Posted: Fri Apr 01, 2011 2:23 pm Post subject: |
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Let's build the project step by step:
First, pls create C:\t\redgate_13136 directory so we have the same structure.
Next, create an empty .Net 4.0 class library project named ClassLibrary1
Add this function:
| Code: |
public class Class1
{
public void Function()
{
Console.WriteLine("Hello World");
}
}
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and use C:\t\redgate_13136\test.snk to sign the dll.
Build the dll and copy the result to C:\t\redgate_13136
Next, Build an ConsoleApplication Project. Add a reference to C:\t\redgate_13136\ClassLibrary1.dll
Add following code for Main:
| Code: |
class Program
{
static void Main(string[] args)
{
Class1 c1 = new Class1();
c1.Function();
Console.ReadLine();
}
}
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Make shure, MDA is enabled:
http://haispeed.de/redgate/MDA%20Message.jpg
Run the sample in VS2010. There should no MDA Messages about pInvoke and stack.
You find this step at http://www.haispeed.de/redgate/13136/Step1.zip
Next, open smartassembly.
Create new project. Browse for Assembly C:\t\redgate_13136\ClassLibrary1\ClassLibrary1\bin\Debug\ClassLibrary1.dll
Set Target to C:\t\redgate_13136\ClassLibrary1.dll
Change Strong Name Signing to "I want to sign my assembly with a strong name". Browse for an key and select C:\t\redgate_13136\test.snk
Say: I want to add tamper protection
http://haispeed.de/redgate/13136/SA_Setting.jpg
All other otpions leave as is.
Build the SA project and rebuild (full rebuild) the ConsoleApplication1. Start the app. There should now an MDA Message:
http://haispeed.de/redgate/13136/MDA-Message.jpg
Ein Aufruf an die PInvoke-Funktion "ClassLibrary1!ClassLibrary1.Class1::StrongNameSignatureVerificationEx" hat das Gleichgewicht des Stapels gestört. Wahrscheinlich stimmt die verwaltete PInvoke-Signatur nicht mit der nicht verwalteten Zielsignatur überein. Überprüfen Sie, ob die Aufrufkonvention und die Parameter der PInvoke-Signatur mit der nicht verwalteten Zielsignatur übereinstimmen.
You find the Step on You find this step at http://www.haispeed.de/redgate/13136/Step2.zip
Version of SmartAssembly is 6.0 buiild 513 |
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Brian Donahue
Joined: 23 Aug 2004
Posts: 6369
Location: Red Gate Software
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| Posted: Tue Apr 05, 2011 1:28 pm Post subject: |
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Hello,
I see the problem now, but it looks to only affect the MDA when you debug in Visual Studio. If you run the code outside of VS/disable the PInvoke MDA, there is no problem. I will log this is an annoyance but I'm not sure it's a problem or not.
_________________
Brian Donahue
Technical Support
Red Gate Software Ltd.
44 (0)870 160 0037 ext 8521
US and CAN 1-866-RED GATE ext 8521 |
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