Info to Exploit Writing

https://code.google.com/p/it-sec-catalog/wiki/Exploitation

Exploit writing tutorials from corelanc0d3r
https://www.corelan.be/
http://www.exploit-db.com/

Heap overflow
https://net-ninja.net/

Heap Spray
https://www.corelan.be/index.php/2011/12/31/exploit-writing-tutorial-part-11-heap-spraying-demystified/
http://www.fuzzysecurity.com/tutorials/expDev/8.html
https://www.greyhathacker.net/?p=549
https://community.rapid7.com/community/metasploit/blog/2013/03/04/new-heap-spray-technique-for-metasploit-browser-exploitation
https://www.corelan.be/index.php/2013/02/19/deps-precise-heap-spray-on-firefox-and-ie10/

Use After Free
http://www.fuzzysecurity.com/tutorials/expDev/11.html
http://www.thegreycorner.com/2010/01/heap-spray-exploit-tutorial-internet.html
http://www.blackhat.com/presentations/bh-usa-07/Afek/Whitepaper/bh-usa-07-afek-WP.pdf