Search Results for: exploits linux
Exploit writing tutorial part 3 : SEH Based Exploits
In the first 2 parts of the exploit writing tutorial series, I have discussed how a classic stack buffer overflow works and how you can build a reliable exploit by using various techniques to jump to the shellcode. The example we have used allowed us to directly overwrite EIP and we had a pretty large […]
Happy 5th Birthday Corelan Team
Table of ContentsIntroductionDiscounts (in alphabetical order):Hak5Hex-RaysMalformity LabsNetsparkerNo Starch PressPatervaRapid7SANSSecurity RootsSyngressYour name here ? Introduction Corelan Team was founded in September of 2009. Over the last few years, the team has written and published numerous tutorials on exploit development. We have created a series of tools and scripts, and worked with vendors/developers across the globe to […]
Metasploit Meterpreter and NAT
Professional pentesters typically use a host that is connected directly to the internet, has a public IP address, and is not hindered by any firewalls or NAT devices to perform their audit. Hacking “naked” is considered to be the easiest way to perform a penetration test that involves getting shells back. Not everyone has the […]
BlackHatEU2013 – Day1 – Practical Attacks against MDM solutions
Good morning everyone, Welcome to BlackHat Europe 2013 ! As announced in my post a couple of days ago, I’ll try to post short write-ups about some of the talks right after the presentation has finished. All you have to do is keep an eye on my Twitter feed to see when a new post is […]
Exploit writing tutorial part 11 : Heap Spraying Demystified
A lot has been said and written already about heap spraying, but most of the existing documentation and whitepapers focus on IE7 or older versions.
Although there are a number of public exploits available that target IE8, the exact technique to do so has not been really documented in detail.
Of course, you can probably derive how it works by looking at those public exploits.
With this tutorial, I’m going to provide you with a full and detailed overview on what heap spraying is, and how to use it on old and newer platforms.
I’ll start with some “ancient” techniques (or classic techniques if you will) that can be used on IE6 and IE7.
We’ll also look at heap spraying for non-browser applications.
Next, we’ll talk about precision heap spraying, which is a requirement to make DEP bypass exploits work on IE8.
I’ll finish this tutorial with sharing some of my own research on getting reliable heap spraying to work on IE9.
Continue reading
BlackHat Europe 2011 / Day 02
Having missed the IOActive party last night, I woke up fresh and sharp and ready for some kick-ass debugger stuff so I decided to start my second day at BlackHat Europe 2011 with attending the Cisco IOS fuzzing & debugging talk.
Continue reading
BlackHat Europe 2011 / Day 01
After having breakfast, chatting with ping and hanging out with @kokanin, @xme and @wimremes, it was time to start attending the various talks.
So, as promised in yesterdays preview, what follows is the report of my first day at Black Hat Europe 2011.
Continue reading
Corelan Training "Corelan Live – Win32 Exploit Development Bootcamp"
Introduction Starting this year, Corelan will be teaching live Win32 exploit development classes at various security conferences. Titled “Corelan Live – Win32 Exploit Development Bootcamp“, this 2-day instructor-led course will teach everything you need to know about writing exploits for a Win32 environment and exploiting stack based vulnerabilities. During the first day, all basics about […]
Metasploit module : HTTP Form field fuzzer
Introduction About a month after releasing an ftp client fuzzer module for Metasploit, I decided to release yet another fuzzer module I have been working on over the last few weeks. This new module can be used to audit web servers/web server plugins/components/filters, by fuzzing form fields and optionally fuzz some header fields. While this […]
Death of an ftp client / Birth of Metasploit modules
Over the past few weeks, Corelan Team has given its undivided attention to fuzzing ftp client applications.
Using a custom built ftp client fuzzer, now part of the Metasploit framework, the team has audited several ftp clients and applications that use an embedded client ftp component. One example of such an application is a tool that would synchronize / backup data from a computer to a remote ftp server.
The 3 main audit/attack vectors that were used during the “project” were
send back overly long responses to ftp commands / requests sent by the ftp client to the server
send back a file/directory listing that contains overly long file/folder names
try to download a file that has an overly long filename.
Continue reading
Donate
Your donation will help funding server hosting.
