Exploit Development 3 - Writing an Exploit Stager

Опубликовано: 29 Сентябрь 2024
на канале: Guided Hacking

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Stagers are used if your actual shellcode is too large to fit it in memory at the time of initial exploitation. Learn how to write a very simple winsock-based stager that reuses an existing socket to then place your whole shellcode in memory in the third part of our exploit development course.

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In the last lesson, our binary exploit overcame space restrictions using jumpcode. This technique is by far not the only one you could use to overcome such restrictions when exploiting buffer overflows; an alternative are stagers.

This article was made to accompany our video tutorial, we recommend you watch the video and use the article as a reference when needed.

What Is A Stager?
A stager is basically a smaller shellcode that you send to the victim first and get it executed. That code then listens for a connection, allowing you to send a second, larger shellcode (the actual shellcode e.g. for a reverse shell).

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