Re: Generating shellcode

From: Fyodor (fygraveat_private)
Date: Sun May 19 2002 - 11:56:14 PDT

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    Ulf H{rnhammar <ulfhat_private> spoke:
    > On Sun, May 19, 2002 at 10:29:05AM -0400, Ryn wrote:
    > > Do any documents exist explaining how to covert assembly op codes and
    > > operands to hex? I can use "gdb" or "dis" on Solaris to get:
    > > 
    > > bc 10 20 00        clr          %fp
    > > e0 03 a0 40        ld           [%sp + 64], %l0
    > > a2 03 a0 44        add          %sp, 68, %l1
    > > 9c 23 a0 20        sub          %sp, 32, %sp
    > > 80 90 00 01        orcc         %g0, %g1, %g0
    > > 
    > > I want to see how to get column 1 - 4 by hand.
    > 
    > The documentation for the processor usually lists the op-codes. If it doesn't, it should be available for downloading at the processor vendor's web site.
    > 
    
    Been there. In a while generating hex by hand becomes a great pain. :-)
    (especially if you do multi-platform assembly at the same time) Over a year
    ago I wrote a perl script which uses gdb to generate left 4 columns
    automagically from an assembly code. Check out easyshell_sparc tool in this
    tarball: http://www.notlsd.net/bof/sparc-tools.tar.gz, could come handy~ ;-)
    (this is sparc-specific version, but I've got templates for hpux/x86 if
    interested, didn't really bother making them public though)..
    
    
    -FY
    
    -- 
    http://www.notlsd.net
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