View source for I0n1c

{{lowercase}}
'''i0n1c''', whose real name is Stefan Esser, is a German security researcher. He developed [[Antid0te]], an [[wikipedia:Address space layout randomization|ASLR]] for jailbroken [[List of iPhones|iPhones]] in fall 2010, but never released it, because [[iOS]] since 4.3 includes an implementation of ASLR. He developed an untethering exploit for iOS 4.3. He gave a version of the exploit that worked on iOS 4.3.1 to the [[iPhone Dev Team]] which updated [[redsn0w]] and [[PwnageTool]] to use it and released the new tools on 4 April 2011. [[sn0wbreeze]] was also updated to include his untether. As the vulnerability went unpatched in iOS 4.3.2 and 4.3.3, he updated his code later to support those firmwares. An iOS 4.3-compatible version was never released. His exploit was used in [[Pangu]] jailbreak.

On Apr 19, 2015 he released a YouTube video of a iOS 8.4 beta jailbreak, he has said he will not release it to the public.
===Presentations===
*[http://www.slideshare.net/i0n1c/syscan-2015-esserios678securityastudyinfail iOS 678 Security - A Study in Fail]
*[http://www.slideshare.net/i0n1c/ruxcon-2014-stefan-esser-ios8-containers-sandboxes-and-entitlements Ruxcon 2014 - iOS8 Containers, Sandboxes and Entitlements]
*[https://reverse.put.as/wp-content/uploads/2011/06/SyScan2012_StefanEsser_iOS_Kernel_Heap_Armageddon.pdf SyScan Singapore 2012: iOS Kernel Heap Armageddon (PDF)]
*[http://antid0te.com/CSW2012_StefanEsser_iOS5_An_Exploitation_Nightmare_FINAL.pdf CanSecWest 2012: iOS5, an Exploitation Nightmare (PDF)]
*[https://media.blackhat.com/bh-us-11/Esser/BH_US_11_Esser_Exploiting_The_iOS_Kernel_Slides.pdf BlackHat US 2011: Exploiting the iOS Kernel (PDF)]
*[http://conference.hitb.org/hitbsecconf2011kul/materials/D2T1%20-%20Stefan%20Esser%20-%20iPhone%20Exploitation%20-%20One%20ROPe%20to%20Bind%20Them%20All.pdf HITB 2011 Malaysia: iPhone Exploitation - One ROPe to bind them all?]
===Links===
*[https://twitter.com/i0n1c i0n1c on Twitter]
*[http://www.suspekt.org Homepage]
*[https://github.com/stefanesser GitHub]
[[Category:Hackers]]
[[Category:Security Researcher]]