------------------------------------------------------------------
                ROSE SWE  EXE Cryptor Small/Antivirus
        $Id: RECAV.DOC,v 2.6 2004/08/18 21:35:08 ralproth Exp $
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                 ____                   ______  __  __
                /\  _`\                /\  _  \/\ \/\ \
                \ \ \L\ \     __    ___\ \ \L\ \ \ \ \ \
                 \ \ ,  /   /'__`\ /'___\ \  __ \ \ \ \ \
                  \ \ \\ \ /\  __//\ \__/\ \ \/\ \ \ \_/ \
                   \ \_\ \_\ \____\ \____\\ \_\ \_\ `\___/
                    \/_/\/ /\/____/\/____/ \/_/\/_/`\/__/
 

Synopsis
~~~~~~~~

    RECAV is an EXE cryptor (based on REC/Small) and an EXE anti
    virus shield.

Usage
~~~~~

    RECAV inputfile.exe             (creates out.exe)

    Only MS-DOS EXE files without relocations are supported! Use the 
    included batch files to automatically rename OUT.EXE back to the 
    original file name.

Hints
~~~~~

    'inputfile' can not have relocations (use e.g. WWPack before). After 
    protecting your inputfile it is locked against further protection, basic 
    modifications and detects virus infections of itself!

    The virus detection is very effective, only true stealth viruses can
    bypass this integrity check.

    Simply double protect a file with REC/AV to 'simulate' a virus infection 
    of this file.


Removing REC/AV
~~~~~~~~~~~~~~~

    The REC/AV envelope can be removed using the unRECAV utility provided
    by Christoph Gabler.


History
~~~~~~~
       version      date      length    comments
        1.09    18-Aug-2004     496     Added check for EXE header, added
                                        version string to envelope (e.g.
                                        3.71 as of 18.08.2004)
        1.08    08-Nov-2003     490     Changed some texts/doc, now 
                                        compilation time is included into the 
                                        shield
        1.07    22-May-2002     442     Changed the decryption key
        1.06    11-Dec-2001     441     Fixed an bug with CS:IP of the target
                                        file to protect.
        1.05c   04-Sep-2001     437     Tried to make it more compatible with
                                        Olaf´s 386 CPU
        1.05b   26-Feb-2001     436     Recompiled with URL+Email added
        1.05    14-Aug-2000     436     Fixes for NT in the batch files
        1.03    07-Aug-1999     436     Fixed some rare crashes if file was
                                        modified.
        1.02    19-June-1999    408     rearranged the code, because RHBVS
                                        triggers a false positive. Credits:
                                        Ralf Borgmann. Fixed min/max memory
                                        allocation.
        1.01    18-June-1999    397     added a small anti debugging trick
        1.00    15-June-1999    304     initial release