Hack a Day » fuzzing

Smart card emulator

Eliot — Wed, 04 Mar 2009 02:18:26 +0000

Here’s a quick prototype from [Travis Goodspeed]. It’s a smart card built around an MSP430 microcontroller. We’ve used the MSP430 in the past because of its low power demands. He says this business card currently supports 1.8V to 3.3V, but a future design will have 5V as well. Technologies like Java Card exist for running applets on smart cards, but a familiar microcontroller like the MSP430 could certainly make development much faster. Knowing [Travis], there’s a reader somewhere about to go through some serious fuzzing.

Posted in security hacks, tool hacks

Automated protocol analysis

Eliot — Wed, 14 Jan 2009 03:24:02 +0000

[I)ruid] from BreakingPoint Labs has been doing quite a bit of protocol reverse engineering as part of his work. He put together a post covering some of the tools that have been useful for this task. Text-based protocols have a lot of human readable characters that can help you identify fields. Binary protocols don’t have this luxury though. He recommends the Protocol Informatics Project for tackling these situations. It applies bioinformatics algorithms to network traffic. You give it a packet dump of the protocol and it compares them to find similarities the same way genetic sequences are compared. It can be confused by protocols that waste a lot of space, but it’s still a very clever approach to reversing.

[photo: slashcrisis]

Posted in downloads hacks, security hacks

Black Hat hackers face off in Iron Chef style competition

Juan Aguilar — Tue, 08 Jul 2008 02:40:00 +0000

Which is a better method for finding vulnerabilities, fuzzing or static-code analysis? The question will be put to the test at next month’s Black Hat USA conference, where two experienced ~~hackers~~ security researchers will be given a piece of mystery code and one hour to find all the vulnerabilities they can using one of the two methods. [Charlie Miller] from Independent Security Evaluators will use fuzzing and [Sean Fay] from Fortify Software will use static-code analysis to detect the vulnerabilities in the code. We reported on [Miller]‘s fuzzing talk while at Toorcon 9.

The pair will be allowed to use their own equipment, but they won’t see the code until the moment the showdown begins. For an added bit of fun, conference attendees are welcome to join in the contest. The audience member who finds the most exploits within the hour wins a free dinner at a new Las Vegas restaurant. But you don’t have to wait until then to weigh in; go ahead and post your thoughts on fuzzing vs. static-code analysis in the comments, just be ready to back up your claims.