nir goldshlager killing a bug bounty program - twice hack in the box 2012
DESCRIPTION
Nir goldshlager Killing a bug bounty program - twice Hack In The Box 2012TRANSCRIPT
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Killing a bounty program, Twice. Hack In The Box 2012 By : Itzhak (Zuk) Avraham; Nir Goldshlager; 05/2012
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# whoami | presentation
Itzhak Avraham (Zuk) Founder & CEO Ihackbanme http://imthezuk.blogspot.com [email protected]
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# whoami | presentation
Nir Goldshlager Senior Web Applications Researcher Twitter: @nirgoldshlager Blog : http://nirgoldshlager.com
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Reasons for bug bounty
ü Money ü Credit
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Reasons for bug bounty
ü Money ü Credit ü Okay, mostly credit, they don’t pay much :P
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Bug bounty programs 1995 – Netscape 2004 – Firefox 2005 – ZDI 2007 – Pwn2own 2010 – Google 2011 – Facebook
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Know your enemy
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Know your enemy
Nope. Your enemies might be : • Masato Kinugawa • Neal Poole • Nils Juenemann • Szymon Gruszecki • Wladimir Palant
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Know your enemy
Nope. Your enemies might be : • Masato Kinugawa • Neal Poole • Nils Juenemann • Szymon Gruszecki • Wladimir Palant
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Learn your target Overview
Spy on their blogs • New bugs – new ideas to detect different vulnerabilities.
Learn the company • Unchecked services
• Successful acquisitions • Untested/Less secured web applications
• Multi vector • Unknown vectors / logical techniques
• Repetitive of weak spots
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Google Overview
Learn the company • Successful acquisitions
http://en.wikipedia.org/wiki/List_of_acquisitions_by_Google • New services – Knol(???), Friends Connect • Subdomains • Learn all the functions of the application you are going to test
• Multi vector • Unknown vectors / logical techniques
• Repetitive of weak spots
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Google Overview
• Successful acquisitions http://en.wikipedia.org/wiki/List_of_acquisitions_by_Google
• More than 1 acquisition per week since 2010!
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Google Overview
Approach • Logical / mixed issues
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XSS for fun and … profit?
• XSS is not just for account hijacking • Trusted website, runs malicious javascript…
• Client Side Exploit anyone?
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Google Overview
Convention • Calender
Google.com/calender • Friends Connect
google.com/friendconnect • Knol
Google.com/knol • Analytics
Google.com/analytics • Blogger
Google.com/blogger
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Google Support Overview Convention
• Knol Google.com/knol No
• Friends Connect Support.google.com/friendconnect
• Calendar Support.google.com/calendar
• Analytics Support.google.com/analytics
• Blogger Support.google.com/blogger
• Admob Support.google.com/admob
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Google Calendar Stored XSS
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Google Calendar Error based
• General Attacks against Google Calendar.
• Going Deep Into the Application.
• What we found. • We need to find a way to
trigger it for REMOTE users.
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Stored XSS (Error based) “Self” Xss Payload
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Google Calendar Error based • Changing the attack vector • Resolving the Self XSS Issue By using the Sharing
Option
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Google Calendar Error based
The Sharing process:
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Google Calendar Error based
Wait, HOUSTON WE HAVE A PROBLEM!!! user must delete his calendar 1-5 times. How can we force our Target to delete our malicious calendars?
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Google Calendar Error based • Resolving the problem: No sharing limit. • Users gets email for each share & our Calendar Is
added Automatically to the victim account.
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Google Calendar Error based
• Calendar SPAM !!! • After the user deletes 1-5 ,
Error occurred • Error Message Details: • Calendar (calendar name)
not load, After that a Stored XSS will be triggerJ
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Google Calendar Error based Game over! Achievement unlocked.
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Google Analytics – Stored XSS
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Google Analytics In-page analytics doesn’t escape incoming requests:
• Meaning, an attacker can send XSS to the administrator by sending a URL
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Google Analytics In-page analytics doesn’t escape incoming requests:
• Meaning, an attacker can send XSS to the administrator by sending a URL
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Google Analytics
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Google Analytics Let’s exploit this vulnerability in 2 creative ways:
• In-Page Analytics – When the administrator logins. Ouch. • Sharing – Infect ourselves and share our Analytics with the
victim (direct link to in-page analytics)
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Google Analytics 1st method:
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Google Analytics Let’s wait for our administrator to login
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Google Analytics Let’s wait for our administrator to login
• Achievement unlocked, we can run JS on any web administrator using Analytics
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Google Analytics
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Google Analytics
• Second method : Sharing with the victim our analytics • We will add the victim with read-only permission and
will submit the link for google.com/analytics account with our ID
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Google Analytics
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Google Analytics § Game over. Achievement unlocked
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Google FeedBurner Stored XSS
FeedBurner provides custom RSS feeds and management tools to bloggers,podcasters, and other web-‐based content publishers
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Google Feedburner Stored XSS Feed title is “vulnerable” to an XSS
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Google Feedburner Stored XSS Wait, Nothing Happened here!!!, There is “NO” XSS
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Google Feedburner Stored XSS Lets look closer on the features of FeedBurner App
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Google Feedburner Unsubscribe XSS § We already know that there is a Subscription feature in
Feed burner, Right??? § What about Unsubscribe option, Maybe this can help us?
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Google Feedburner Unsubscribe XSS When the victim will decide to unsubscribe from the malicious feed burner a stored xss will be run on his client.
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Google Feedburner Unsubscribe XSS Lets Exploit it with two methods: 1. Victim subscribe to the service & Later unsubscribe from the malicious FeedBurner. 2. Attacker Send a malicious unsubscribe link to the victim (Victim dont need to be subscribe to the malicious feed).
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Google FriendConnect Error based Meet your new best friend :
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Google FriendConnect Error based The target approved our request.
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Google FriendConnect Error based The target approved our request. Now, let’s force him to delete us, not before we’re going to change our name to : AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA …. “><XSS Payload>
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Google FriendConnect Error based
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Google FriendConnect Error based After User delete :
• Achievement Unlocked.
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Permission bypass – Google Knol
Knol is an online knowledge Portal
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Permission bypass
• Privacy in Google Knol • Function :Publish, Unpublished Docs
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Permission bypass Example of Unpublished document:
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Permission bypass This document isn’t accessible via direct URL
The image cannot be displayed. Your computer may not have enough memory to open the image, or the image may have been corrupted. Restart your computer, and then open the file again. If the red x still appears, you may have to delete the image and then insert it again.
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Permission bypass
Google Validate Permission, Block us from viewing the unpublished Document
What can we do ????
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Permission bypass Lets meet our new friend J Google Knol Translator Toolkit
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Permission bypass
Attacker Provide the url of the Unpublished Doc
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Permission bypass And magic happens
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Google Affiliate Network – Stored XSS + Administrator Priv!
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Google Affiliate Network
What Is Google Affiliate Network??
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Google Affiliate Network
Google Affiliate Network is a free program that makes it easy for website publishers to connect with quality advertisers and get rewarded for driving conversions. § Discover high-performing advertisers § Save time with a speedy and intuitive interface § Track conversions and access real-time reporting § Enjoy local payments via your AdSense account § VIP and Rising Star status for top publishers
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Google Affiliate Network The goals: 1. XSS an account. 2. Gaining Administrator Privilege
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Google Affiliate Network First Attack: ConnectCommerce->Performics->DoubleClick->Google;
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Google Affiliate Network First Attack: Manipulating Parameters on connectcommerce.com domain in order to Inject XSS Payload on google.com Domain
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Google Affiliate Network PoC : Stored XSS from Google.com Domain
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Google Affiliate Network Second attack?? Manipulate, Gaining administrator privilege on any Google Affiliate
account.
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Google Affiliate Network Manipulate UserID, Email fields
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Game Over 3133.7$!!!!!
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Google Picnik – Local File Inclusion
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Google Picnik
Picnik.com seems to be Secure So what is the way to crack the lock?
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Google Picnik
1. Execute a BruteForce to Files, Dir Attack 2. Execute a Sub domain Brute Force Attack 3. Port Scanning
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Google Picnik
Treasure Found!!!!!! Result: Sub domain: vpn.picnik.com
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Picnik WhoIs vpn Which Server vpn.picnik.com Hosted
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Google Picnik
• So what was the story of vpn picnik?,
• Someone installed by mistake a older version of phpList in Picnik vpn sub domain
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Google Picnik
• So what was the story of vpn picnik?,
• Someone installed by mistake a older version of phpList in Picnik vpn sub domain
• No way!!! With Default Password J ?
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What Is phpList???
phplist is open source email application & suffers from well known Vulnerabilities
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Google Picnik
File Inclusion vulnerability that allow me to get a Shell with a leet bounty $3133,7
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Google Picnik Game Over
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Summary
§ Out-Of-The-Box (Hack-In-The-Box) Thinking § Think different § Information gathering § Mixed services § Permissions
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Reference
● http://www.nirgoldshlager.com/2011/03/blogger-get-administrator-privilege-on.html - Blogger admin privileges bypass
● http://www.google.com/about/company/rewardprogram.html - Google Reward program
● http://www.google.com/about/company/halloffame.html - Google Hall of Fame
● http://www.slideshare.net/michael_coates/bug-bounty-programs-for-the-web - Michael Coates - Bug Bounty Program – OWASP 2011
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One more Maybe it’s not a good idea to follow our blogs
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One more Maybe it’s not a good idea to follow our blogs
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Okay okay, one more Blogger video…
HPP Attack
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Join us tonight at Hack-In-The-Empire event For invites : [email protected] Subject : HITE Invite
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Itzhak “Zuk” Avraham - @IHackBanMe Nir Goldshlager - @NirGoldshlager
Thank you!