BlackHat USA 2011 - Stefan Esser - iOS Kernel ExploitationStefan Esser
Exploiting the iOS Kernel
The iPhone user land is locked down very tightly by kernel level protections. Therefore any sophisticated attack has to include a kernel exploit in order to completely compromise the device. Because of this our previous session titled "Targeting the iOS Kernel" already discussed how to reverse the iOS kernel in order to find kernel security vulnerabilities. Exploitation of iOS kernel vulnerabilities has not been discussed yet.
This session will introduce the audience to kernel level exploitation of iPhones. With the help of previously disclosed kernel vulnerabilities the exploitation of uninitialized kernel variables, kernel stack buffer overflows, out of bound writes and kernel heap buffer overflows will be discussed.
Furthermore the kernel patches applied by iPhone jailbreaks will be discussed in order to understand how certain security features are deactivated. A tool will be released that allows to selectively de-activate some of these kernel patches for more realistic exploit tests.
This paper is a compilation of 10 innovation predictions for the world in 2025, based on research done by Thomson Reuters analysts. The aim of this project was to identify 10 technologies of tomorrow that will be in use in 2025 based on research and development currently identifiable in the literature of today - both scientific literature and published patents.
BlackHat USA 2011 - Stefan Esser - iOS Kernel ExploitationStefan Esser
Exploiting the iOS Kernel
The iPhone user land is locked down very tightly by kernel level protections. Therefore any sophisticated attack has to include a kernel exploit in order to completely compromise the device. Because of this our previous session titled "Targeting the iOS Kernel" already discussed how to reverse the iOS kernel in order to find kernel security vulnerabilities. Exploitation of iOS kernel vulnerabilities has not been discussed yet.
This session will introduce the audience to kernel level exploitation of iPhones. With the help of previously disclosed kernel vulnerabilities the exploitation of uninitialized kernel variables, kernel stack buffer overflows, out of bound writes and kernel heap buffer overflows will be discussed.
Furthermore the kernel patches applied by iPhone jailbreaks will be discussed in order to understand how certain security features are deactivated. A tool will be released that allows to selectively de-activate some of these kernel patches for more realistic exploit tests.
This paper is a compilation of 10 innovation predictions for the world in 2025, based on research done by Thomson Reuters analysts. The aim of this project was to identify 10 technologies of tomorrow that will be in use in 2025 based on research and development currently identifiable in the literature of today - both scientific literature and published patents.
Vedic Astrology or Jyotish is the sister branch of Ayurveda and part of Dev Vyapshrya (Spiritual / Super natural) type of treatment. For understanding the Karmic reasons of diseases and difficulties, knowledge of Jyotish is the only way out.
Panchkarma is best modality for Immunoregulation so a treatment of choice for auto immune disorders. We have organized 23 courses of one month duration since 1999 and this presentation is an introductory part same course.
Diabetes means to pass something abnormal with urine and mellitus means honey and this is the exact translation of term Madhumeh which was first mentioned by Sushrut in 200 AD. Term Diabetes Mellitus is invented in last century only so it is evident that Ayurvedic Seers were already knowing about all the details about disease. Sushrut despite dealing with Surgery wrote a full chapter on Madhumeh viz Diabetes Mellitus in Nidan Sthan and then in Chikitsa Sthan. Sushrut emphasised on Diabetes Mellitus may be coz he was counteracting the complications during surgeries.
Neem is a village dispensary free and freely available all over India, with a great fight India could win back its patient from an US company.
If anyone asks me choose a single herb for curing the multiple ailment of mankind NEEM will be first herb of my choice
Prof. Dr Sanjeev Sood
Vedic Astrology or Jyotish is the sister branch of Ayurveda and part of Dev Vyapshrya (Spiritual / Super natural) type of treatment. For understanding the Karmic reasons of diseases and difficulties, knowledge of Jyotish is the only way out.
Panchkarma is best modality for Immunoregulation so a treatment of choice for auto immune disorders. We have organized 23 courses of one month duration since 1999 and this presentation is an introductory part same course.
Diabetes means to pass something abnormal with urine and mellitus means honey and this is the exact translation of term Madhumeh which was first mentioned by Sushrut in 200 AD. Term Diabetes Mellitus is invented in last century only so it is evident that Ayurvedic Seers were already knowing about all the details about disease. Sushrut despite dealing with Surgery wrote a full chapter on Madhumeh viz Diabetes Mellitus in Nidan Sthan and then in Chikitsa Sthan. Sushrut emphasised on Diabetes Mellitus may be coz he was counteracting the complications during surgeries.
Neem is a village dispensary free and freely available all over India, with a great fight India could win back its patient from an US company.
If anyone asks me choose a single herb for curing the multiple ailment of mankind NEEM will be first herb of my choice
Prof. Dr Sanjeev Sood