Much like using Microsoft domains to host payloads, traffic passing through a network will be TLS (SSL) encrypted and appear to be regular website traffic. The most significant advantages of doing so include firewall evasion and transport encryption. Hackers have been using sites like Google, Instagram, Dropbox, and Evernote for years to distribute malware as well as control other computers. Using public websites as C&C systems isn't a new concept by any means. In our example, a public MyBB-based forum website is used as a centralized point (i.e., the command-and-control server) between the attacker and a compromised MacBook. There are many methods and protocols used in modern botnets. These computers usually share a centralized point where new commands to perform can be found. What Is a Command & Control Server?īotnets are a collection of compromised internet-connected computers. ![]() General knowledge of HTTP request headers and POST and GET requests, as well as some experience with creating variables, functions, and conditional statements in Bash, will be helpful when following along. ![]() It only takes a few lines of code to configure a MacBook to fetch commands and send responses to any website the attacker desires.īefore you keep reading, know that this project is not geared toward beginners. An attacker can repurpose public MyBB forums to act as command-and-control servers.
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