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Programming > Assembly x86 > Re: NDISASM: do...
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Re: NDISASM: doesn't recognize all Mod/RM extension opcodes?

by Frank Kotler <spamtrap@[EMAIL PROTECTED] > Apr 25, 2008 at 07:29 PM

Robert Redelmeier wrote:
> Frank Kotler <spamtrap@[EMAIL PROTECTED]
> wrote in part:
>> Alexei A. Frounze wrote:
>>> I didn't try the latest NDISASM, but the 0.98.35
>> Still using Nasm with the buffer overflow? Why???
> 
> Maybe 'cuz Alexei is smart enough to keep the buffer low?
> Mostly a matter of avoiding hostile (overlong) input.

True. I'm not aware of any existing "hostile" code (besides Jonathan 
Rockway's demo of the problem). Alexei probably *looks* at code before 
he attempts to assemble it (it would be pretty obvious, I think). 
Still... if you've got a choice between a tool with a potentially 
exploitable buffer overflow, and an otherwise all-around improved 
version of the same tool without it, which would you choose?

Best,
Frank
 




 9 Posts in Topic:
NDISASM: doesn't recognize all Mod/RM extension opcodes?
"Alexei A. Frounze&q  2008-04-24 05:19:57 
Re: NDISASM: doesn't recognize all Mod/RM extension opcodes?
"Wolfgang Kern"  2008-04-24 21:41:08 
Re: NDISASM: doesn't recognize all Mod/RM extension opcodes?
"Rod Pemberton"  2008-04-25 03:45:46 
Re: NDISASM: doesn't recognize all Mod/RM extension opcodes?
Frank Kotler <spamtra  2008-04-25 18:07:13 
Re: NDISASM: doesn't recognize all Mod/RM extension opcodes?
Robert Redelmeier <red  2008-04-25 18:39:57 
Re: NDISASM: doesn't recognize all Mod/RM extension opcodes?
Frank Kotler <spamtra  2008-04-25 19:29:23 
Re: NDISASM: doesn't recognize all Mod/RM extension opcodes?
Robert Redelmeier <red  2008-04-25 20:49:05 
Re: NDISASM: doesn't recognize all Mod/RM extension opcodes?
Frank Kotler <spamtra  2008-04-25 21:58:42 
Re: NDISASM: doesn't recognize all Mod/RM extension opcodes?
Chuck Crayne <spamtra  2008-04-25 16:05:15 

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tan12V112 Fri Jul 25 21:00:04 CDT 2008.