A Guide to Kernel Exploitation: Attacking the Core by Enrico Perla, Massimiliano Oldani

By Enrico Perla, Massimiliano Oldani

The variety of safeguard countermeasures opposed to user-land exploitation is at the upward thrust. due to this, kernel exploitation is turning into even more well known between make the most writers and attackers. fidgeting with the center of the working procedure could be a harmful online game: This publication covers the theoretical ideas and methods had to advance trustworthy and powerful kernel-level exploits and applies them to varied working structures (Linux, Solaris, Mac OS X, and Windows). Kernel exploits require either artwork and technological know-how to accomplish. each OS has its quirks and so each take advantage of has to be molded to totally take advantage of its aim. This publication discusses the most well-liked OS families-UNIX derivatives, Mac OS X, and Windows-and the right way to achieve entire keep an eye on over them. techniques and strategies are provided categorically in order that even if a in particular targeted make the most has been patched, the foundational details that you've got learn may help you to jot down a more recent, greater assault or a extra concrete layout and protecting structure.

* Covers a variety of working approach households - UNIX derivatives, Mac OS X, Windows
* info universal eventualities similar to everyday reminiscence corruption (stack overflow, heap overflow, etc.) concerns, logical insects and race conditions
* offers the reader from user-land exploitation to the realm of kernel-land (OS) exploits/attacks, with a specific concentrate on the stairs that result in the construction of profitable innovations, with a view to provide to the reader anything greater than only a set of tricks

 

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Extra info for A Guide to Kernel Exploitation: Attacking the Core

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A. the Bug Grab Bag) INTRODUCTION Software has bugs. A bug is a malfunction in a program that makes the program produce incorrect results, behave in an undesired way, or simply crash/terminate unexpectedly. 9 version of the Linux Kernel: static int bluez sock create(struct socket *sock, int proto) { if (proto >= BLUEZ MAX PROTO) return EINVAL; […] return bluez proto[proto] >create(sock,proto); } In this code, the parameter proto is checked against a maximum value, to avoid reading past the size of the bluez proto array later, when proto is used as an index inside the array.

Operating System Concepts, Eighth Edition (Wiley). , and Cesati, M. 2005. Understanding the Linux Kernel, Third Edition (O’Reilly). Singh, A. 2006. Mac OS X Internals (Addison Wesley Professional). , with Ionescu, A. 2009. Microsoft Windows Internals, Fifth Edition (Microsoft Press). , and McDougall, R. 2006. Solaris Internals, Second Edition (Prentice Hall PTR). Endnote 1. Solar Designer. Getting around non executable stack (and fix). 10]. a. the Bug Grab Bag) INTRODUCTION Software has bugs. A bug is a malfunction in a program that makes the program produce incorrect results, behave in an undesired way, or simply crash/terminate unexpectedly.

1 Data type sizes in the different data models Data type LP32 ILP32 Char Short Int Long Long long Pointer 8 16 16 32 64 32 8 16 32 32 64 32 LP64 8 16 32 64 64 64 ILP64 LLP64 8 16 64 64 64 64 8 16 32 32 64 64 not explicitly stated). 1 provides a recap of data type sizes for each model (sizes are expressed in number of bits). Now, let’s say the ILP32 model is in place. In this case, the pointer occupies four bytes in memory. While the pointer is uninitialized, its value is whatever value resides in the memory assigned to hold the pointer variable.

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