10 February, 2014

23 December, 2013

Native DLL functions from Java code

Here is a tiny note on how to invoke native exported DLL functions from Java code in Windows.
According to the Wiki: "Java Native Access (JNA) provides Java programs easy access to native shared libraries without using the Java Native Interface. JNA's design aims to provide native access in a natural way with a minimum of effort. Noboilerplate or generated glue code is required."
I wrote a DLL in FASM to make it more fun.

27 March, 2013

iCTF 2013: NuclearBoom write up

iCTF is an attack-defense computer security competition organized by the University of California, Santa Barbara. As usual you need to defense your network and attack others using vulnerabilities in the same set of services that all of participants have on their prepared virtual server. Here's a short write up for one binary service called Nuclear Boom.

28 November, 2012

PoliCTF 2012 Part 0x01 Bin-Pwn

I took part in PoliCTF 2012 and right now I'd like to make some notes how to solve challenges from this competition. All challenges in this CTF were divided in four groups: Crypto, Bin-Pwn, GrabBag and Forensics. 100, 200, 300, 400 and 500 points challenges in each division. This post is the first one and about all BIN-PWN challenges.

24 November, 2012

PoliCTF 2012 Part 0x00 Forensics-500

This is my write-up for a Forensics-500 challenge from PoliCTF competition