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You're reading from Learning Linux Binary Analysis

Product type Book

Published in Feb 2016

Publisher Packt

ISBN-13 9781782167105

Pages 282 pages

Edition 1st Edition

Languages

Concepts

Data Analysis

Author (1):

Ryan "elfmaster" O'Neill

Table of Contents (17) Chapters

Learning Linux Binary Analysis

Credits

About the Author

Acknowledgments

About the Reviewers

www.PacktPub.com

Preface

The Linux Environment and Its Tools

The ELF Binary Format

Linux Process Tracing

ELF Virus Technology – Linux/Unix Viruses

Linux Binary Protection

ELF Binary Forensics in Linux

Process Memory Forensics

ECFS – Extended Core File Snapshot Technology

Linux /proc/kcore Analysis

Index

ptrace requests

The ptrace system call has a libc wrapper like any other system call, so you may include ptrace.h and simply call ptrace while passing it a request and a process ID. The following details are not a replacement for the main pages of ptrace(2), although some descriptions were borrowed from the main pages.

Here's the synopsis:

#include <sys/ptrace.h>
long ptrace(enum __ptrace_request request, pid_t pid,
void *addr, void *data);

ptrace request types

Here is a list of requests that are most commonly used when using ptrace to interact with a process image:

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Authors (1)

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.

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Request	Description
`PTRACE_ATTACH`	Attach to the process specified in `pid`, making it a tracee of the calling process. The tracee is sent a `SIGSTOP` signal, but will not necessarily have stopped by the completion of this call. Use `waitpid(2)` to wait for the tracee to stop.
`PTRACE_TRACEME`	Indicates that this process is to be traced by its parent. A process probably shouldn't make this request if its parent isn't expecting...