Flag: Tornado! Hurricane!

 Forums >>  Brainstorms - General  >>  Static UNICODE_STRING buffer in TIB

Topic created on: July 30, 2012 16:32 CDT by 0x200x20 .

On offset 0xBF8 in TIB there is some UNCODE_STRING buffer. It seems to be used permanently in ReactOS by ASCII Winapi functions but I cannot find where it is used by original Windows. I have tried to put hardware breakpoint on it (Win 7 x64) but it seems it has never been used. Could you please tell by which API could it be used?

  waleedassar     July 30, 2012 17:33.44 CDT
It is not used in Windows 7 (64-bit), neither in native x64 processes nor in Wow64 processes. In native x64 processes, the whole UNICODE_STRING structure is set to zero and in Wow64 processes, it just has an empty string

According to the link below, it has been found to be an anti-debug trick for Vista (32-bit). Actually i don't have Windows Vista (32-bit) to test.
http://www.symantec.com/connect/articles/windows-anti-debug-reference

  0x200x20     July 31, 2012 14:34.21 CDT
Thanks a lot, waleedassar.

  waleedassar     August 12, 2012 22:37.42 CDT
To investigate more about this structure, you can check the "ntdll!LdrpLoadImportModule" function in XP. Just in case someone needs that.

Note: Registration is required to post to the forums.

There are 31,320 total registered users.


Recently Created Topics
[help] Unpacking VMP...
Mar/12
Reverse Engineering ...
Jul/06
hi!
Jul/01
let 'IDAPython' impo...
Sep/24
set 'IDAPython' as t...
Sep/24
GuessType return une...
Sep/20
About retrieving the...
Sep/07
How to find specific...
Aug/15
How to get data depe...
Jul/07
Identify RVA data in...
May/06


Recent Forum Posts
Finding the procedur...
rolEYder
Question about debbu...
rolEYder
Identify RVA data in...
sohlow
let 'IDAPython' impo...
sohlow
How to find specific...
hackgreti
Problem with ollydbg
sh3dow
How can I write olly...
sh3dow
New LoadMAP plugin v...
mefisto...
Intel pin in loaded ...
djnemo
OOP_RE tool available?
Bl4ckm4n


Recent Blog Entries
halsten
Mar/14
Breaking IonCUBE VM

oleavr
Oct/24
Anatomy of a code tracer

hasherezade
Sep/24
IAT Patcher - new tool for ...

oleavr
Aug/27
CryptoShark: code tracer ba...

oleavr
Jun/25
Build a debugger in 5 minutes

More ...


Recent Blog Comments
nieo on:
Mar/22
IAT Patcher - new tool for ...

djnemo on:
Nov/17
Kernel debugger vs user mod...

acel on:
Nov/14
Kernel debugger vs user mod...

pedram on:
Dec/21
frida.github.io: scriptable...

capadleman on:
Jun/19
Using NtCreateThreadEx for ...

More ...


Imagery
SoySauce Blueprint
Jun 6, 2008

[+] expand

View Gallery (11) / Submit