I am trying to exploit a program where I have to reuse a socket.

recv looks like this:

int recv(
_In_  SOCKET s, // socket ID
_Out_ char   *buf,
_In_  int    len,
_In_  int    flags

I want to find where the socket ID is on the stack. How do I find this using Immunity Debugger?

  • 2
    @DominikAntal please consider making an answer from your comment since it may answer OP's question
    – Megabeets
    Commented Nov 12, 2017 at 9:43

1 Answer 1


Put a INT3 (F2) breakpoint on the recv function (To jump to that function, hit CTRL+G then type recv to the textbox which just appeared, and then hit enter) within Immunity Debugger, and observe the stack (lower right corner) for the socket ID when the breakpoint is hit.

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