Hook HttpWebRequest

Hello Community.
How to hook for instance HttpWebRequest functions? Hooking C++ functions is quite easy but hooking .NET Framework functions does not work for me. The dll's cannot be injected. Do you have any solutions for my problem? I want to inject a native dll into a managed process.

Greetings,

qkuh

Well, it's just theory, as I never get in touch with hooking managed function. And I guess you can't hook managed code with a native module.
But the managed code is just a layer over the native code. The .net runtime (CLR) has to JIT-compile or interpret the .net bytecode to execute it. So whenever an managed application sends out a HttpWebRequest there have to be a native packet sent by a native socket (most likely over the native winapi). So your native dll could hook these functions (which is quite easy, just like you said) and log / analyse them.
Of course you can play around a bit and see if a winapi call to send a packet always comes from the same location (mscoree.dll maybe, I don't know) so you would know which .net function equivalent it is or if one HttpWebRequest instance always has the same socket. Maybe these things could be usefull for you.
I hope that I was able to help you at least a bit ;)
Jeoni

Yea, HttpWebRequest uses WSAConnect but how should I hook it? Because it's inside the ws2_32.dll which is loaded by the .net application.

There are some ways todo it, jeonis approach is working normaly. Could you give us a bit more information about what you want to do ?

Iam a bit suprised btw, detouring ws2_32.dll functions should work :o

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Originally Posted by dasschild [Only registered and activated users can see links. Click Here To Register...]

That does not help me. I do not have access to the sourcecode. Thanks anyway.

code in fremden .net code zu injecten sollte ja wohl kein problem sein. also wirste wohl auch das oben nutzen können

sonst wie schon gesagt einfach winsock hooken