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Veil 3.1.X (Check version info in Veil at runtime)

Android Application Identifier for Packers, Protectors, Obfuscators and Oddities - PEiD for Android

windows kernel security development

Python antivirus evasion tool

A list of backdoor learning resources

An Python Script For Generating Payloads that Bypasses All Antivirus so far .

fireELF - Fileless Linux Malware Framework

a unique framework for cybersecurity simulation and red teaming operations, windows auditing for newer vulnerabilities, misconfigurations and privilege escalations attacks, replicate the tactics and techniques of an advanced adversary in a network.

Cloak can backdoor any python script with some tricks.

Evasion by machine code de-optimization.