Adding Linux sandbox detection capabilities - x64

[litemars]

Description

This PR introduces a Linux x64 sandbox‑evasion module that performs lightweight runtime environment checks and aborts execution when a likely sandbox or VM is detected. The module runs before the payload and silently skips execution if the environment score crosses a suspicion threshold.

What is include:

• Evasion sandbox_gate module
• Mixin shellcode sandbox checks

Verification Steps

1. use evasion/linux/x64/sandbox_gate
2. set payload linux/x64/shell_reverse_tcp
3. Set LPORT/LHOST - run

[litemars]

Hi,

Let me know if you like the runtime checks, if you want I can expand it with other ideas that you might have, and later, I can expand it to x86 and arm64.

Cheers,
M