Obfuscation has to do with changing the signature of the malware we are generating

Types of AV Detection Methods

1. Signature based detection (This is a unique sequence of bytes that uniquely identifies malware )
2. Heuristic based detection (relies on rules or decision to determine whether a binary is malicious)
3. Behaviour based detection (relies on idenifying malware by monitoring its behaviour)

Evasion Techniques

1. On-disk evasion technique a. obfuscation b. encoding c. packing d. crypters
2. In-memory evasion technique

A tool named shelter can be used for this

He used vnc viewer as an example here

Obfuscating PowerShell code

The tool that will be used for this is “invoke-obfuscation”

You can run powershell on linux by downloading the powershell package

To run the tool

Invoke-Obfuscation

To import a powershell module on Invoke-Obfuscation

Import-Module module.psd1