24-Lamb

 +------+

+--->Server| | +------+ | | | +---v----+ | |Firewall| | +--------+ | | | +---v---------+ | |Public Server| | +-^-----------+ | | | +---+ +---+You| +---+

Shared object or .so is no stranger to Linux user. The main purpose of shared object is a collection of code that can be reused by other project. Shared object can be loaded ( dynamic linked ) by executable file during runtime as oppose to static link with static library. The characteristic imply that executable may crash due to missing shared object. This text explain how dynamic linking is performed and later explore the possibilities of tapping the call between executable and shared object.

I spend whole afternoon trying to figure out why theano wont play nice with my Nvidia GT 9800 card. Here is the 5 minute solution I learnt.

Context

Cef is a framework allowing us to embed chromium into our application
Golang is the language designed by Google employee with heavy support on concurrency.

Practice for my first ROP from the nice people from PicoCTF2013 with the help from very nice tutorial

Golang is all good and sunshine .. untill you need a library which is only available in C / C++

Last year the someone offer HITB-2014 ( The last HITB ) free ticket for anyone who solve this puzzle. Me, being a python newbies, attempted this puzzle and failed horribly.

level 1 provide us with this vortex.c file , i have cleaned up and added some comment