Add payload/linux/x64/set_hostname module.

[xHector1337]

This payload sets the hostname of a Linux x64 machine by using the sethostname syscall. It requires root privileges.

Verification

List the steps needed to make sure this thing works

• Start msfconsole
• use payload/linux/x64/set_hostname
• Set the HOSTNAME option as desired.
• Run generate to produce the payload.
• Execute the generated payload on a Linux x64 target with root privileges.
• Verify that the hostname has changed to the specified value.

[msutovsky-r7]

Sorry about that, can you merge this as well? We need to update specs for tests to be passing.

[xHector1337]

Of course I can. I'll add the exit syscall as soon as I am home. Thanks.

[msutovsky-r7]

Sorry, forgot to add exit

Suggested change

	ret ; break the loop by causing segfault.
	push 0x3c
	pop rax
	xor rdi, rdi
	inc rdi
	syscall

[xHector1337]

I think exit(0) is better than exit(1)

[msutovsky-r7]

Release Notes

Adds a new payload module for invoking the set_hostame syscall, which changes hostname to pwned or a user-defined hostname.