OpenRCE

About Articles Book Store Distributed RCE Downloads Event Calendar Forums Live Discussion Reference Library RSS Feeds Search Users What's New

Customize Theme

Flag: Tornado! Hurricane!

Created: Thursday, June 7 2007 19:58.37 CDT

Printer Friendly ...

IDA's .IDS Files Part I

Author: RolfRolles

# Views: 10819

This topic comes up occasionally, so it's worth a quick investigation.  Your IDA directory has a subdirectory called 'ids' that contains more directories, which in turn contain .IDS files.  .IDS files do two things:  they define a mapping between ordinal numbers and symbol names (which may be mangled, and may contain the number of function arguments and their types), and secondly they allow (optional) comments for those functions.

The IDSUTIL package from DataRescue's website (only available to customers) provides tools to create .IDT files from statically-linked libraries and then to convert those into .IDS files.  .IDT files are flat text files whose syntax is described in the readme.txt inside of the IDSUTIL package.

The 'ar2idt' tool produces an .IDT file from a .LIB.  Its command-line syntax is "ar2idt [filename].[lib/obj/o/etc.]" to produce [filename].IDT.  This tool supports several different object-file formats, as different compiler vendors use different ones.

Here's a sample from an .IDT file:

0 Name=MSGS.DLL
1 Name=??0CBaseMtm@@IAE@AAVCRegisteredMtmDll@@AAVCMsvSession@@@Z
2 Name=??0CBaseServerMtm@@IAE@AAVCRegisteredMtmDll@@PAVCMsvServerEntry@@@Z
3 Name=??0CMsgActive@@IAE@H@Z
4 Name=??0CMsvDefaultServices@@QAE@XZ
5 Name=??0CMsvEntrySelection@@QAE@XZ
313 Name=??0CMsvFindOperation@@IAE@AAVCMsvSession@@ABVTDesC16@@IAAVTRequestStatus@@@Z
314 Name=??0CMsvFindResultSelection@@QAE@XZ
6 Name=??0CMsvOperation@@QAE@AAVCMsvSession@@HAAVTRequestStatus@@@Z

After you have an .IDT file, the zipids.exe tool is used to turn an .IDT file into an .IDS file.  Its command-line is simply "zipids [filename].IDT" to create [filename].IDS.

Blog Comments

SuperIrishDonkey	Posted: Wednesday, July 18 2007 01:41.09 CDT
Why i cannot find the created idt file when i use ar2idt?

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