Is Menuet really uncrashable?

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Ivan Poddubny

Joined: 21 Sep 2003
Posts: 32
Location: Yaroslavl, Russia

Ivan Poddubny 23 Dec 2003, 13:07

Compile with FASM and run...

Code:

use32
org 0
db 'MENUET01'
dd 1,s,e,1000h,0fff0h,0
s:
mov eax,51
mov ebx,1
mov ecx,s
mov edx,0fff0h
int 40h
cli
e:

23 Dec 2003, 13:07

Ville

Joined: 17 Jun 2003
Posts: 312

Ville 23 Dec 2003, 14:14

Menuet isn't uncrashable. Many of the system calls lack limit-checks, which are needed for entry paramenters.
Altough many of the protection mechanisims work fine.

23 Dec 2003, 14:14

Ville

Joined: 17 Jun 2003
Posts: 312

Ville 24 Dec 2003, 09:32

Menuet 0.76 pre-2.3 has a bugfix for the Ivans code.

Code:

use32
org 0
db 'MENUET01'
dd 1,s,e,1000h,0fff0h,0
s:
mov eax,51
mov ebx,1
mov ecx,s
mov edx,0fff0h
int 40h
cli
e:

24 Dec 2003, 09:32

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