full-disclosure - 2 nice pop/pop/ret :) (update)

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From: class101 at gmail.com (class 101)
Subject: 2 nice pop/pop/ret :) (update)

> I had the same problem with that universal w2k offset you posted about on
> 9th Feb (Subject: Nice call to ebx found).  I went and looked for it on my
> W2k Pro Sp2 system at home.  It wasn't there :-(

Yep normal, because if I remember , I have mentionned that it was for w2k
pro&srv , SP4's series for all langages, but I guess its not the same for
sp3-2-1-0

> but the kernel32 one just isn't there:
>
> 0:003> u 0x77E7F69E
> kernel32!BasepShimCacheSearch+0x1d:
> 77e7f69e c02802           shr     byte ptr [eax],0x2

ha shit ;( but looks like we have 2 different versions, the one where I have
tried is:

 File Version:    0x000500010a280452
 Product Version: 0x000500010a280452
 File Flags:
 File OS:         NT WINDOWS32
 File Type:       DLL
 File Subtype:    Not currently supported
 File Date:       0x0000000000000000

Translation table:
-----------------
0409 04b0

         CompanyName:  Microsoft Corporation

-------------------------------------------------------------
class101
Jr. Researcher
Hat-Squad.com
-------------------------------------------------------------
----- Original Message -----
From: "Dave Korn" <davek_throwaway@...mail.com>
To: <class101@...-squad.com>; <Full-Disclosure@...ts.grok.org.uk>
Sent: Thursday, March 10, 2005 8:05 PM
Subject: RE: [Full-disclosure] 2 nice pop/pop/ret :) (update)


> >From: "class 101" Date: Wed, 9 Mar 2005 10:01:57 +0100
>
>   Hi there class 101!
>
> >  Here is the result of comparing some huge list of pop/pop/ret of XP
SP1,
> >SP1a, SP2 ENGLISH
> >
> >I got 2 universal offsets accross those 3 Os
> >
> >SP2 ENGLISH
> >
> >0x71ABE325 pop esi - pop - retbis - WS2_32.DLL
> >0x77E7F69E pop ebx - pop - retbis - RPCRT4.DLL
> >
> >SP1a ENGLISH
> >
> >0x71ABE325 pop edi - pop - retbis - WS2_32.DLL
> >0x77E7F69E pop ebx - pop - retbis  - KERNEL32.DLL
> >
> >SP1 ENGLISH
> >
> >0x71ABE325 pop edi - pop - retbis - WS2_32.DLL
> >0x77E7F69E pop ebx - pop - retbis - KERNEL32.DLL
> >
> >
> >enjoy :)
>
>
>   That's interesting:  on my sp1 english system, only one of those
addresses
> works.  The winsock one is good:
>
> 0:003> u 0x71ABE325
> WS2_32!CopyBlobIndirect+0x71:
> 71abe325 5f               pop     edi
> 71abe326 5e               pop     esi
> 71abe327 c20400           ret     0x4
>
> but the kernel32 one just isn't there:
>
> 0:003> u 0x77E7F69E
> kernel32!BasepShimCacheSearch+0x1d:
> 77e7f69e c02802           shr     byte ptr [eax],0x2
> 77e7f6a1 0000             add     [eax],al
> 77e7f6a3 03442414         add     eax,[esp+0x14]
> 77e7f6a7 66833800         cmp     word ptr [eax],0x0
> 77e7f6ab 7415             jz    kernel32!BasepShimCacheSearch+0x3d
> (77e7f6c2)
> 77e7f6ad 50               push    eax
> 77e7f6ae ff74241c         push    dword ptr [esp+0x1c]
>
>   I had the same problem with that universal w2k offset you posted about
on
> 9th Feb (Subject: Nice call to ebx found).  I went and looked for it on my
> W2k Pro Sp2 system at home.  It wasn't there :-(
>
>   What do you suppose could be the reason why we find different results?
> Hotfixes perhaps?  How does the version info look like from _your_ copy of
> kernel32.dll?  Mine says
>
> 0:003> lm v mkernel32
> start    end        module name
> 77e60000 77f46000   kernel32   (pdb symbols)
> C:\symcache\kernel32.pdb\40D1D0C52\kernel32.pdb
>     Loaded symbol image file: C:\WINDOWS\system32\kernel32.dll
>     Image path: C:\WINDOWS\system32\kernel32.dll
>     Image name: kernel32.dll
>     Timestamp:        Thu Jun 17 18:58:35 2004 (40D1DBCB)
>     CheckSum:         000EC3A9
>     ImageSize:        000E6000
>     File version:     5.1.2600.1560
>     Product version:  5.1.2600.1560
>     File flags:       0 (Mask 3F)
>     File OS:          40004 NT Win32
>     File type:        2.0 Dll
>     File date:        00000000.00000000
>     Translations:     0409.04b0
>     CompanyName:      Microsoft Corporation
>     ProductName:      Microsoft? Windows? Operating System
>     InternalName:     kernel32
>     OriginalFilename: kernel32
>     ProductVersion:   5.1.2600.1560
>     FileVersion:      5.1.2600.1560 (xpsp2_gdr.040517-1325)
>     FileDescription:  Windows NT BASE API Client DLL
>     LegalCopyright:   ? Microsoft Corporation. All rights reserved.
>
>
>     cheers,
>       DaveK
> --
> Can't think of a witty .sigline today....
>
>
>
>