non-destructive-payload64.asm

        global _start

        section .text

_start:
    jmp message

message:
    call shellcode
    db "The only antidote to mental suffering is physical pain - Karl Marx", 0xa

shellcode:
    mov rax, 0x1        ;write system call
    mov rdi, 0x1        ;stdout fd

    pop rsi             ;make rsi a ptr to message
    mov rdx, 0x2a       ;message length
    syscall

    ;xor rdi, rdi       ; 0 return status
    ;xor rax, rax
    ;mov al, 0x3c       ; syscall for exit
    ;syscall