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.NET/mono type detection for AA?

 
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jgoemat
Master Cheater
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Joined: 25 Sep 2011
Posts: 264
PostPosted: Fri Jul 04, 2014 7:31 pm    Post subject: .NET/mono type detection for AA? Reply with quote
I love the new .NET/mono features in 6.4 and was wondering if there is some way to detect an object's type in AA. I haven't had time to look through the source and try to understand how DotNetDataCollector works, but the pointer to the vtable at offset 0 seems to define what type an object is. I would love to be able to use some symbol in AA to get that vtable value. For example:

Code:
playerType:
  dd RogueLegacy.EnemyObj_Platform_vtable

code:
  push eax
  mov eax,[esi]
  cmp eax,[platformType]
  jne skip
  // do something for platforms only here
skip:
  pop eax
  cmp [esi+00000118],0 // original code
  jmp return


Could I maybe use LUA to set those symbols? I see the monoscript.lua as a mono_findReferencesToObject function that seems to get the vtable value, is that what I need to use?

Something I just noticed that would be handy would be to have a vtable type for the data dissector or just display the type name for offset 0's vtable if structure has it selected that would show the class name, and a column in the watch windows that could be enabled to show the same. That's really pie-in-the-sky I know.

Thanks for the great new features!
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justa_dude
Grandmaster Cheater
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Joined: 29 Jun 2010
Posts: 891
PostPosted: Fri Jul 04, 2014 9:02 pm    Post subject: Reply with quote
I haven't tried it myself, but you could probably call system.type.gettype yourself to get a type from a name and then interrogate further w/ the type members. To go the other way, and get a string from a type, you'd probably use object.getype passing your object's address as the implied this argument.
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