From: Ralf Baechle <ralf@uni-koblenz.de>
To: dirty boy <slashdotcommacolon@hotmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Linux ELF Implementation
Date: Mon, 2 Sep 2002 06:07:49 +0200 [thread overview]
Message-ID: <20020902060749.A6109@bacchus.dhis.org> (raw)
In-Reply-To: <F218kOUkl2SN8anK0B30000890f@hotmail.com>; from slashdotcommacolon@hotmail.com on Sun, Sep 01, 2002 at 10:26:10PM +0000
On Sun, Sep 01, 2002 at 10:26:10PM +0000, dirty boy wrote:
> im learning about the ELF specification with a friend of mine, were hoping
> to get a better understanding of how these things work, and a wild idea
> occurred to us - would it be possible to create a valid ELF executable from
> purely printable ASCII characters ?
>
> by that i mean, you would be able to literally cat > a.out and enter your
> executable from the keyboard! it wouldnt have todo anything, just return
> 0...
>
> the file wouldnt have to be portable, only the fields that the kernel is
> going to notice would have to be present, so long as it executes!
>
> im convinced the answer is no - but my friend says it is, he says hes seen
> it done in PE format ( although we cant find it on the web ) and therefore
> theres no reason why it couldnt be done in ELF.
There answer is no; the ELF magic at the begin of an ELF file contains
a non-printable character.
Ralf
next prev parent reply other threads:[~2002-09-02 4:03 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-01 22:26 dirty boy
2002-09-02 4:07 ` Ralf Baechle [this message]
2002-09-02 4:57 ` Thunder from the hill
2002-09-02 6:12 ` Chris Wedgwood
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