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OpenRCE Anti Reverse Engineering Technique >> OllyDbg PE Header Parsing DoS Vulnerabilities

Technique Name Category Analysis By Download Added On Last Updated
OllyDbg PE Header Parsing DoS Vulnerabilities Debugging ap0x OllyDBG-PE-Header.zip March 11 2006
Description:
    .386
      .model flat, stdcall
      option casemap :none   ; case sensitive

      include \masm32\include\windows.inc
      include \masm32\include\user32.inc
      include \masm32\include\kernel32.inc

      includelib \masm32\lib\user32.lib
      includelib \masm32\lib\kernel32.lib

    .data
       MsgTitle db "[Simple MessageBox]",0h
       MsgText db "This is a very simple program ;)",0h
    .code

start:

; MASM32 antiOlly example
; coded by ap0x
; Reversing Labs: http://ap0x.headcoders.net

; I have modified the PEHeader of several included .exe files.
; Fake values I have entered in PEHeader make OllyDBG crash or
; not recognise sections.

PUSH 40h
PUSH offset MsgTitle
PUSH offset MsgText
PUSH 0
CALL MessageBox

PUSH 0
CALL ExitProcess

end start

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