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Offensive Shellcode from Scratch

You're reading from   Offensive Shellcode from Scratch Get to grips with shellcode countermeasures and discover how to bypass them

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Product type Paperback
Published in Apr 2022
Publisher Packt
ISBN-13 9781803247427
Length 208 pages
Edition 1st Edition
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Author (1):
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Rishalin Pillay Rishalin Pillay
Author Profile Icon Rishalin Pillay
Rishalin Pillay
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Shellcode techniques

When it comes to shellcode development for Windows, there are a number of techniques that can be used. In this section, we will cover some of these techniques that are prevalent today. These techniques range from buffer overflow attacks to attacks leveraging pointers known as eggs, backdooring PE files, and so on.

We will get started by considering buffer overflow attacks. Let's dive into this.

Buffer overflow attacks

A buffer is a volatile location of memory. Its aim is to temporarily hold data while this is being transferred from one location to another. Since this is a temporary hold, it has limitations. These limitations are the size of the buffer, which is generally small. When you overflow the buffer, you are exceeding the capacity of the buffer. The result of the overflow can lead to malicious code being executed.

Stack-based buffer overflows are one of the most common types of exploits that exist. These are often used to take over the code...

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