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I have a C# browser app that I compiled as a DLL. I used forms and Visual Studio to make it. Would I be able to inject that DLL into an application and have that browser window displayed? Something similar to Steam's Shift+Tab overlay. I tried injecting it, but with no surprise it does not show up. If that's not possible, what's the best way to achieve what i'm looking for?

Random Garbage
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  • What do you mean compiled as a dll, a .net assembly, or a standard windows PE file ? – TheGeneral Nov 26 '19 at 01:46
  • @TheGeneral , .NET framework 4.7.2, output type Class Library. – Random Garbage Nov 26 '19 at 01:49
  • Just curious, what is your definition of DLL injection, and how are you injecting this – TheGeneral Nov 26 '19 at 01:52
  • @TheGeneral , I use ExtremeInjector. From my understanding, if it's the same concept as with C++ injection, I will just run my code inside of another application. I want to have hotkey, for example, that will display or hide my browser gui on press. – Random Garbage Nov 26 '19 at 02:00
  • Well, based on what it says on the website, yes, it should be possible, I guess you need to declare some method that this extreme injector was to call, and that method should wire some listener for e.g. keyboard input to launch that window, but that is not impossible. – zaitsman Nov 26 '19 at 02:31
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    I find it very unlikely that it is injecting a .net assembly into the process space of another application. Injection usually works by inserting a jmp command to point to your dll's method somewhere in its code. I could be wrong, but i know of no library that will do this for a .net assembly. – TheGeneral Nov 26 '19 at 02:32
  • @TheGeneral https://stackoverflow.com/questions/20023379/injecting-a-managed-dll-into-a-native-process has code, more can be found https://www.bing.com/search?q=c%23+injectt+dll. As far as I understand 4.x runtime allows running multiple version side by side even... so with some luck one can have multiple unrelated plugins running... Doable and I even used one hacked into an old MMO game ~15 years ago... – Alexei Levenkov Nov 26 '19 at 03:03
  • @AlexeiLevenkov ahh ok, thanks, i stand corrected. – TheGeneral Nov 26 '19 at 03:09

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