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Stop/block send packet after ws2_32.send called

 
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spyware293
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PostPosted: Thu May 04, 2017 6:14 pm    Post subject: Stop/block send packet after ws2_32.send called Reply with quote

How do i stop packet being sent at this point (without dropping the entire connection)
Code:

00717F96  |. 6A 00          |PUSH 0                                  ; /Flags = 0

00717F98  |. 52             |PUSH EDX                                ; |DataSize

00717F99  |. 51             |PUSH ECX                                ; |Data

00717F9A  |. FF76 04        |PUSH DWORD PTR DS:[ESI+4]               ; |Socket

00717F9D  |. FF15 24B4AD00  |CALL DWORD PTR DS:[ADB424]              ; \ws2_32.send  << EIP here (breakpoint)

Tried to empty the packet buffer, modify the socket handle. nothing works[/quote]
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atom0s
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PostPosted: Fri May 05, 2017 2:28 pm    Post subject: Reply with quote

You'd be better off hooking the API and just ignoring the send when needed making the function just return valid as if it worked fine. Trying to just set a breakpoint and mod the params is going to usually land up with you sending a null packet or the socket just being dropped on the remote end.
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