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KeenLab iOS 12.1 jailbreak

Liang Chen demonstrated iOS 12.1 jailbreak at PoC 2018.

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KeenLab iOS 12 jailbreak

Liang Chen & Marco Grassi demonstrated iOS 12 jailbreak at RECon conference in Montreal.

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KeenLab iOS 11.3.1 jailbreak

iOS 11.3.1 Jailbreak successfully demonstrated at Infiltrate con 2018.

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KeenLab iOS 12.2 Jailbreak

Liang Chen & Marco Grassi demonstrated iOS 12.2 jailbreak on at Infiltrate conference 2019

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KeenLab iOS 11.1.1 jailbreak

iOS 11.1.1 Jailbreak achieved at POC 2017.


About Keen Team

Keen Security lab is established in 2016 and transformed from famous Keen Team. The team attends on advanced security research such as PC / mobile operating systems, applications, cloud computing, IOT smart devices etc. As well Keen Security Lab widely focuses on Tencent products and technologies.

Liang Chen

Marco Grassi
Senior Security

James Fang
Senior Security

Wu Shi
Senior Security

Sen Nie
Security Researcher

Qidan He (Edward Flanker)
Security Researcher

Di Shen
Security Researcher

Security Researcher


  • Win the Virtual Machines Escapes (Guest-to-Host) category with a VMWare Workstation exploit at Pwn2Own 2017.

  • Master of Pwn title in Pwn2Own 2016

  • Led the team united with Tencent PC Manager team to win the Master of Pwn title in Pwn2Own 2016

  • OS X category in Pwn2Own 2014.

  • Winner for iOS category in Mobile Pwn2Own 2013.

  • Lifetime Achievement Award nomination to Wushi for his 10-year continuous contribution to worldwide security research community.

  • 2 Best Privilege Escalation Award nominations for achievements on Windows TTF and Ping Pong Root.

Proud Speakers for:

Projects done :

  • iOS Exploit - Keen team attended on iOS 12.2 Jailbreak, iOS 12.1 Jailbreak, iOS 12 Jailbreak, iOS 11.3.1 Jailbreak, iOS 11.1.1 jailbreak, iOS 11 Jailbreak & iOS 10.3.2 Jailbreak.
  • The Keen team successfully exploited vulnerabilities in above iOS versions. Security researches of the Keen team focused research on iOS vulnerability, mechanism and exploitation mitigations for a long time. As a result of that, overcome the iOS 12.2 Jailbreak on A12 devices recently. Further, Keen Lab accomplished iOS 12.1 Jailbreak, iOS 12 Jailbreak, iOS 11.3.1 Jailbreak, iOS 11.1.1 Jailbreak, iOS 11 Jailbreak & iOS 10.3.2 jailbreak using various devices at various worldwide hacking conferences.

  • Car Hacking Research - Hack Tesla Model S with Remote Attack
  • Tesla Motors is considered to be one of the most comprehensive cyber-security automakers in the world. Last couple of months Keen team inspections about the Tesla car and identified various security vulnerabilities and successfully implemented both physical connections or the Parking and Driving Mode of the Tesla Model S. Proud to say that we used an unmodified car with the latest firmware to demonstrate the attack.

  • Complete OSX Privilege Escalation
  • Keen Lab use the Blitzard kernel error to avoid the Safari renderer sandbox, existing in the blit operation of graphics pipeline for pwn2own. We used own Exploitation method with The IGVector add function, add Drivers function and mainly with kalloc.48 and kalloc.4096.

  • Rooting Every Android From Extension To Exploitation
  • Keen Lab focused on kernel exploit mitigations appeared on Android for the recent 2 years. Discovered implementation of mitigations/ bypassing techniques/Android WEXT attack surface analysis & details of three rooting exploits once affected most Android devices.

  • Pwn of Microsoft Edge
  • Pwn of Microsoft Edge comprises both Browser Remote Code Execution and browser sandbox bypass. Browser RCE succeed by exploiting a Javascript vulnerability. Browser sandbox avoid by logical sandbox escape or Escalation of Privilege through kernel vulnerabilities. Used loops are D3DKMT Present with overflowing fields set in the buffer, D3DKMT Present with overflowing fields set in the buffer from multiple threads and BitBlt from another multiple threads.

  • WindowServer
  • The privilege chameleon on macOS

    Consisting history of windowserver, basic concepts, architecture, CVE-2014-1314 design flaw and details of the pwnie nomination bug: CVE-2016-1804, which we used to inscribe the latest OS X El Capitan remotely with a browser exploit and improve to root access. Resolves several issues discovered by Part 1 still existing in Window Server. Finally Exploited CVE-2016-1804 with full remote root by chaining with Safari exploit. Exploited both userland graphics and kernel graphics.