metasploit

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Offensive Security Exploit Weekend

Introduction I’m excited and honored to be able to announce that Sud0, one of our Corelan Team members, has won the Offensive Security Exploit weekend, an exploiting exercise only available to Offensive Security certified alumni. The challenge was built around a vulnerability in Foxit Reader. Each participant was pointed to a Proof of Concept exploit, […]

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

Exploit notes – win32 eggs-to-omelet

In article 8 of my exploit writing series, I have introduced the concept of egg hunters, and explained what an omelet hunter is and how it works. Today, I want to share with you my own eggs-to-omelet implementation, explain how it works, and how you can use it in a standalone exploit or in a […]

Exploit writing tutorial part 9 : Introduction to Win32 shellcoding

Over the last couple of months, I have written a set of tutorials about building exploits that target the Windows stack. One of the primary goals of anyone writing an exploit is to modify the normal execution flow of the application and trigger the application to run arbitrary code… code that is injected by the […]

Exploit writing tutorial part 8 : Win32 Egg Hunting

Introduction Easter is still far away, so this is probably the right time to talk about ways to hunting for eggs (so you would be prepared when the easter bunny brings you another 0day vulnerability) In the first parts of this exploit writing tutorial series, we have talked about stack based overflows and how they […]

Metasploit Project acquired by Rapid7

Just a few moments ago, Neil Roiter has reported on SearchSecurity that The Metasploit Project (and the Metasploit Framework) has been acquired by Rapid7, a network vulnerability management vendor. This news has been confirmed by Rapid7 (see website) and by Metasploit (see blog) A podcast of a discussion (on the acquisition) between HD Moore and […]

Fuzzing with Metasploit : Simple FTP fuzzer

Just wanted to drop a quick note about the release of another free script. This time I’ve written a simple FTP fuzzer (with a little help from HDMoore) in Metasploit. You can read more about it (and download the script) at http://www.corelan.be:8800/index.php/my-free-tools/security/metasploit/simple-ftp-fuzzer-metasploit-module/ This is why I like Metasploit so much… :-) Update : after running […]

Exploit writing tutorial part 5 : How debugger modules & plugins can speed up basic exploit development

In the first parts of this exploit writing tutorial, I have mainly used Windbg as a tool to watch registers and stack contents while evaluating crashes and building exploits. Today, I will discuss some other debuggers and debugger plugins that will help you speed up this process. A typical exploit writing toolkit arsenal should at […]

Exploit writing tutorial part 4 : From Exploit to Metasploit – The basics

In the first parts of the exploit writing tutorial, I have discussed some common vulnerabilities that can lead to 2 types of exploits : stack based buffer overflows (with direct EIP overwrite), and stack based buffer overflows that take advantage of SEH chains. In my examples, I have used perl to demonstrate how to build […]

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Since 2011, Corelan GCV has been teaching live win32 exploit dev classes at various security cons and private companies & organizations.

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