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You're reading from  Learning Linux Binary Analysis

Product typeBook
Published inFeb 2016
Reading LevelIntermediate
PublisherPackt
ISBN-139781782167105
Edition1st Edition
Languages
C
Tools
Linux
Concepts
Data Analysis
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Author (1)
Ryan "elfmaster" O'Neill
Ryan "elfmaster" O'Neill
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Ryan "elfmaster" O'Neill

Ryan "elfmaster" O'Neill is a computer security researcher and software engineer with a background in reverse engineering, software exploitation, security defense, and forensics technologies. He grew up in the computer hacker subculture, the world of EFnet, BBS systems, and remote buffer overflows on systems with an executable stack. He was introduced to system security, exploitation, and virus writing at a young age. His great passion for computer hacking has evolved into a love for software development and professional security research. Ryan has spoken at various computer security conferences, including DEFCON and RuxCon, and also conducts a 2-day ELF binary hacking workshop. He has an extremely fulfilling career and has worked at great companies such as Pikewerks, Leviathan Security Group, and more recently Backtrace as a software engineer. Ryan has not published any other books, but he is well known for some of his papers published in online journals such as Phrack and VXHeaven. Many of his other publications can be found on his website at http://www.bitlackeys.org.
Read more about Ryan "elfmaster" O'Neill

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stock vmlinux has no symbols

Unless you have compiled your own kernel, you will not have a readily accessible vmlinux, which is an ELF executable. Instead, you will have a compressed kernel in /boot, usually named vmlinuz-<kernel_version>. This compressed kernel image can be decompressed, but the result is a kernel executable that has no symbol table. This poses a problem for forensics analysts or kernel debugging with GDB. The solution for most people in this case is to hope that their Linux distribution has a special package with their kernel version having debug symbols. If so, then they can download a copy of their kernel that has symbols from the distribution repository. In many cases, however, this is not possible, or not convenient for one reason or another. Nonetheless, this problem can be remedied with a custom utility that I designed and released in 2014. This tool is called kdress, because it dresses the kernel symbol table.

Actually, it is named after an old tool by Michael...

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Learning Linux Binary Analysis
Published in: Feb 2016Publisher: PacktISBN-13: 9781782167105
© 2016 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Ryan "elfmaster" O'Neill

Ryan "elfmaster" O'Neill is a computer security researcher and software engineer with a background in reverse engineering, software exploitation, security defense, and forensics technologies. He grew up in the computer hacker subculture, the world of EFnet, BBS systems, and remote buffer overflows on systems with an executable stack. He was introduced to system security, exploitation, and virus writing at a young age. His great passion for computer hacking has evolved into a love for software development and professional security research. Ryan has spoken at various computer security conferences, including DEFCON and RuxCon, and also conducts a 2-day ELF binary hacking workshop. He has an extremely fulfilling career and has worked at great companies such as Pikewerks, Leviathan Security Group, and more recently Backtrace as a software engineer. Ryan has not published any other books, but he is well known for some of his papers published in online journals such as Phrack and VXHeaven. Many of his other publications can be found on his website at http://www.bitlackeys.org.
Read more about Ryan "elfmaster" O'Neill

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