Document syscall usage for fileless execution

feat: add info on obfuscating go builds

feat: add Hijacking Libraries with LD_PRELOAD

Clean up markdown

Linux Evasive Techniques

Rename Generating and Compiling Your Backdoor.MD to Generating and Compiling Your Backdoor.md

Add Octal Obfuscation

Update Bypass-AV-Payload-Detection.MD

Update Bypass-AV-Payload-Detection.MD

Update Bypass-AV-Payload-Detection.MD

Update Bypass-AV-Payload-Detection.MD

Update Generating and Compiling Your Backdoor.MD

Update and rename Generating and Compiling Your Backdoor to Generating and Compiling Your Backdoor.MD

Update Bypass-AV-Payload-Detection.MD

Update Bypass-AV-Payload-Detection.MD