Flag: Tornado! Hurricane!

 Forums >>  Debuggers  >>  Stop at system dlls.

Topic created on: October 30, 2012 02:58 CDT by dewew .

How I can make my ollydbg or immunity debugger to stop at calling system dlls?

  waleedassar     October 30, 2012 15:01.26 CDT
Options --> Debugging Options ---> Events ---> Break on new module (DLL).
This causes OllyDbg to pause at the point the "ZwMapViewOfSection" function has just returned.

If you want to break at the "DllMain" function of a system DLL, instruct OllyDbg to pause at "System Breakpoint", select ntdll.dll from executable modules table (ALT+E), and then CTRL+S to search for the following sequence of instructions.

push [ebp+0x14]
push [ebp+0x10]
push [ebp+0xC]
call [ebp+0x8]

Place a breakpoint on the call [ebp+0x8] instruction. Each time the breakpoint is hit, inspect the stack to see if it is the system dll you are expecting.

I am not sure if Immunity has a built-in command for that. In Windbg, it is much easier.

Note: Registration is required to post to the forums.

There are 31,310 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