Book Image

Security with Go

By : John Daniel Leon
Book Image

Security with Go

By: John Daniel Leon

Overview of this book

Go is becoming more and more popular as a language for security experts. Its wide use in server and cloud environments, its speed and ease of use, and its evident capabilities for data analysis, have made it a prime choice for developers who need to think about security. Security with Go is the first Golang security book, and it is useful for both blue team and red team applications. With this book, you will learn how to write secure software, monitor your systems, secure your data, attack systems, and extract information. Defensive topics include cryptography, forensics, packet capturing, and building secure web applications. Offensive topics include brute force, port scanning, packet injection, web scraping, social engineering, and post exploitation techniques.
Table of Contents (15 chapters)

Creating bind shells

Bind shells are programs that bind to a port and listen for connections and serves shells. Whenever a connection is received, it runs a shell, such as Bash, and passes off the standard input, output, and error handles to the remote connection. It can listen forever and serve shells to multiple incoming connections.

Bind shells are useful when you want to add persistent access to a machine. You can run the bind shell and then disconnect or inject the bind shell into memory through a remote code execution vulnerability.

The biggest problem with bind shells is that firewalls and the NAT routing can prevent direct remote access to the computer. Incoming connections are usually blocked or routed in a way that prevent connecting to the bind shell. For this reason, reverse bind shells are often used. The next section covers reverse bind shells.

When compiling this...