OpenRCE

📚 OpenRCE is preserved as a read-only archive. Launched at RECon Montreal in 2005. Registration and posting are disabled.

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: Saturday, June 9 2007 01:19.00 CDT

Modified: Saturday, June 9 2007 01:48.31 CDT

This is an imported entry. View original.

Printer Friendly ...

pefile and packer detection

Author: ero

# Views: 2401

Ive always wanted some tool that I could run over large collections of executable files and would tell me whats packed and whats not and, ideally, also the packer. PEiD has wonderful signature libraries but my ideal tool would be easier to integrate with other components and not restricted to Windows.
The guys at OffensiveComputing had put together some code to, by making use of PEiD signatures and pefile, recognize packers.

Ive decided that its time for pefile to have such functionality by default and Ive reimplemented the signature parsing and matching. The next version of pefile should include this new code.
Ive also found some pretty extensive signature libraries and here are some of results of the test runs in some files Ive laying around.

Of the 48.025 files (all malware) that I scanned, in ~42% no packer could be found using the current signature database. In the remaining ~58% the tests found 227 different packers and compiler signatures.

A more extense listing of the most frequently found packers looks like:

Given that Ive run pefile in several tens of thousands of pieces of malware with all kind of exotic PE format contortions, Ive managed to find and fix a couple of obscure bugs. The forthcoming release will be even stronger when facing files that push the limits of the PE format well-formedness.

If you wish to comment on this blog entry, please do so on the original site it was imported from.

There are 31,328 total registered users.

Recently Created Topics
[help] Unpacking VMP...	Mar/12
Reverse Engineering ...	Jul/06
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
Question about memor...	Dec/12

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