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CERIAS Tech Report 2017-5 Deceptive Memory Systems by Christopher N
CERIAS Tech Report 2017-5 Deceptive Memory Systems by Christopher N. Gutierrez Center for Education and Research Information Assurance and Security Purdue University, West Lafayette, IN 47907-2086 DECEPTIVE MEMORY SYSTEMS ADissertation Submitted to the Faculty of Purdue University by Christopher N. Gutierrez In Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy December 2017 Purdue University West Lafayette, Indiana ii THE PURDUE UNIVERSITY GRADUATE SCHOOL STATEMENT OF DISSERTATION APPROVAL Dr. Eugene H. Spa↵ord, Co-Chair Department of Computer Science Dr. Saurabh Bagchi, Co-Chair Department of Computer Science Dr. Dongyan Xu Department of Computer Science Dr. Mathias Payer Department of Computer Science Approved by: Dr. Voicu Popescu by Dr. William J. Gorman Head of the Graduate Program iii This work is dedicated to my wife, Gina. Thank you for all of your love and support. The moon awaits us. iv ACKNOWLEDGMENTS Iwould liketothank ProfessorsEugeneSpa↵ord and SaurabhBagchi for their guidance, support, and advice throughout my time at Purdue. Both have been instru mental in my development as a computer scientist, and I am forever grateful. I would also like to thank the Center for Education and Research in Information Assurance and Security (CERIAS) for fostering a multidisciplinary security culture in which I had the privilege to be part of. Special thanks to Adam Hammer and Ronald Cas tongia for their technical support and Thomas Yurek for his programming assistance for the experimental evaluation. I am grateful for the valuable feedback provided by the members of my thesis committee, Professor Dongyen Xu, and Professor Math ias Payer. -
HTTP-FUSE Xenoppix
HTTP-FUSE Xenoppix Kuniyasu Suzaki† Toshiki Yagi† Kengo Iijima† Kenji Kitagawa†† Shuichi Tashiro††† National Institute of Advanced Industrial Science and Technology† Alpha Systems Inc.†† Information-Technology Promotion Agency, Japan††† {k.suzaki,yagi-toshiki,k-iijima}@aist.go.jp [email protected], [email protected] Abstract a CD-ROM. Furthermore it requires remaking the entire CD-ROM when a bit of data is up- dated. The other solution is a Virtual Machine We developed “HTTP-FUSE Xenoppix” which which enables us to install many OSes and ap- boots Linux, Plan9, and NetBSD on Virtual plications easily. However, that requires in- Machine Monitor “Xen” with a small bootable stalling virtual machine software. (6.5MB) CD-ROM. The bootable CD-ROM in- cludes boot loader, kernel, and miniroot only We have developed “Xenoppix” [1], which and most part of files are obtained via Internet is a combination of CD/DVD bootable Linux with network loopback device HTTP-FUSE “KNOPPIX” [2] and Virtual Machine Monitor CLOOP. It is made from cloop (Compressed “Xen” [3, 4]. Xenoppix boots Linux (KNOP- Loopback block device) and FUSE (Filesys- PIX) as Host OS and NetBSD or Plan9 as Guest tem USErspace). HTTP-FUSE CLOOP can re- OS with a bootable DVD only. KNOPPIX construct a block device from many small block is advanced in automatic device detection and files of HTTP servers. In this paper we describe driver integration. It prepares the Xen environ- the detail of the implementation and its perfor- ment and Guest OSes don’t need to worry about mance. lack of device drivers. -
DMFS - a Data Migration File System for Netbsd
DMFS - A Data Migration File System for NetBSD William Studenmund Veridian MRJ Technology Solutions NASAAmes Research Center" Abstract It was designed to support the mass storage systems de- ployed here at NAS under the NAStore 2 system. That system supported a total of twenty StorageTek NearLine ! have recently developed DMFS, a Data Migration File tape silos at two locations, each with up to four tape System, for NetBSD[I]. This file system provides ker- drives each. Each silo contained upwards of 5000 tapes, nel support for the data migration system being devel- and had robotic pass-throughs to adjoining silos. oped by my research group at NASA/Ames. The file system utilizes an underlying file store to provide the file The volman system is designed using a client-server backing, and coordinates user and system access to the model, and consists of three main components: the vol- files. It stores its internal metadata in a flat file, which man master, possibly multiple volman servers, and vol- resides on a separate file system. This paper will first man clients. The volman servers connect to each tape describe our data migration system to provide a context silo, mount and unmount tapes at the direction of the for DMFS, then it will describe DMFS. It also will de- volman master, and provide tape services to clients. The scribe the changes to NetBSD needed to make DMFS volman master maintains a database of known tapes and work. Then it will give an overview of the file archival locations, and directs the tape servers to move and mount and restoration procedures, and describe how some typi- tapes to service client requests. -
Unionfs: User- and Community-Oriented Development of a Unification File System
Unionfs: User- and Community-Oriented Development of a Unification File System David Quigley, Josef Sipek, Charles P. Wright, and Erez Zadok Stony Brook University {dquigley,jsipek,cwright,ezk}@cs.sunysb.edu Abstract If a file exists in multiple branches, the user sees only the copy in the higher-priority branch. Unionfs allows some branches to be read-only, Unionfs is a stackable file system that virtually but as long as the highest-priority branch is merges a set of directories (called branches) read-write, Unionfs uses copy-on-write seman- into a single logical view. Each branch is as- tics to provide an illusion that all branches are signed a priority and may be either read-only writable. This feature allows Live-CD develop- or read-write. When the highest priority branch ers to give their users a writable system based is writable, Unionfs provides copy-on-write se- on read-only media. mantics for read-only branches. These copy- on-write semantics have lead to widespread There are many uses for namespace unifica- use of Unionfs by LiveCD projects including tion. The two most common uses are Live- Knoppix and SLAX. In this paper we describe CDs and diskless/NFS-root clients. On Live- our experiences distributing and maintaining CDs, by definition, the data is stored on a read- an out-of-kernel module since November 2004. only medium. However, it is very convenient As of March 2006 Unionfs has been down- for users to be able to modify the data. Uni- loaded by over 6,700 unique users and is used fying the read-only CD with a writable RAM by over two dozen other projects. -
We Get Letters Sept/Oct 2018
SEE TEXT ONLY WeGetletters by Michael W Lucas letters@ freebsdjournal.org tmpfs, or be careful to monitor tmpfs space use. Hey, FJ Letters Dude, Not that you’ll configure your monitoring system Which filesystem should I use? to watch tmpfs, because it’s temporary. And no matter what, one day you’ll forget —FreeBSD Newbie that you used memory space as a filesystem. You’ll stash something vital in that temporary space, then reboot. And get really annoyed Dear FreeBSD Newbie, when that vital data vanishes into the ether. First off, welcome to FreeBSD. The wider com- Some other filesystems aren’t actively terrible. munity is glad to help you. The device filesystem devfs(5) provides device Second, please let me know who told you to nodes. Filesystems that can’t store user data are start off by writing me. I need to properly… the best filesystems. But then some clever sysad- “thank” them. min decides to hack on /etc/devfs.rules to Filesystems? Sure, let’s talk filesystems. change the standard device nodes for their spe- Discussing which filesystem is the worst is like cial application, or /etc/devd.conf to create or debating the merits of two-handed swords as reconfigure device nodes, and the whole system compared to lumberjack-grade chainsaws and goes down the tubes. industrial tulip presses. While every one of them Speaking of clever sysadmins, now and then has perfectly legitimate uses, in the hands of the people decide that they want to optimize disk novice they’re far more likely to maim everyone space or cut down how many copies of a file involved. -
System Profile
Steve Sample’s Power Mac G5 6/16/08 9:13 AM Hardware: Hardware Overview: Model Name: Power Mac G5 Model Identifier: PowerMac11,2 Processor Name: PowerPC G5 (1.1) Processor Speed: 2.3 GHz Number Of CPUs: 2 L2 Cache (per CPU): 1 MB Memory: 12 GB Bus Speed: 1.15 GHz Boot ROM Version: 5.2.7f1 Serial Number: G86032WBUUZ Network: Built-in Ethernet 1: Type: Ethernet Hardware: Ethernet BSD Device Name: en0 IPv4 Addresses: 192.168.1.3 IPv4: Addresses: 192.168.1.3 Configuration Method: DHCP Interface Name: en0 NetworkSignature: IPv4.Router=192.168.1.1;IPv4.RouterHardwareAddress=00:0f:b5:5b:8d:a4 Router: 192.168.1.1 Subnet Masks: 255.255.255.0 IPv6: Configuration Method: Automatic DNS: Server Addresses: 192.168.1.1 DHCP Server Responses: Domain Name Servers: 192.168.1.1 Lease Duration (seconds): 0 DHCP Message Type: 0x05 Routers: 192.168.1.1 Server Identifier: 192.168.1.1 Subnet Mask: 255.255.255.0 Proxies: Proxy Configuration Method: Manual Exclude Simple Hostnames: 0 FTP Passive Mode: Yes Auto Discovery Enabled: No Ethernet: MAC Address: 00:14:51:67:fa:04 Media Options: Full Duplex, flow-control Media Subtype: 100baseTX Built-in Ethernet 2: Type: Ethernet Hardware: Ethernet BSD Device Name: en1 IPv4 Addresses: 169.254.39.164 IPv4: Addresses: 169.254.39.164 Configuration Method: DHCP Interface Name: en1 Subnet Masks: 255.255.0.0 IPv6: Configuration Method: Automatic AppleTalk: Configuration Method: Node Default Zone: * Interface Name: en1 Network ID: 65460 Node ID: 139 Proxies: Proxy Configuration Method: Manual Exclude Simple Hostnames: 0 FTP Passive Mode: -
Mis Chuletas De Mac OS X Impreso El 9 De Junio De 2009, a Las 11:03 Horas
Mis chuletas de Mac OS X Impreso el 9 de junio de 2009, a las 11:03 horas Índice 1 Versiones de Mac OS X 2 2 Hardware 2 2.1 MacBook casa 2 2.2 iMac trabajo 2 3 Uso 2 3.1 Atajos de teclado 2 3.2 Terminal (y comandos) 3 3.3 Aplicación por defecto 3 3.4 Arranque 4 3.4.1 Modo usuario único 4 3.4.2 Modo seguro 4 3.4.3 Arranque múltiple 4 3.4.4 Arranque de unidad de CD/DVD 4 3.5 Capturas de pantalla 4 3.5.1 Captura de pantalla de ordenador remoto 4 3.6 Redes mixtas: Windows 4 3.6.1 Compartiendo FAT32 y NTFS con Samba 5 3.7 Cambio de nombre de carpeta en red 5 3.8 Buscando símbolos 6 3.9 Dos instancias simultáneas de una aplicación 6 3.10 Finder 6 3.10.1 Atajo a carpeta superior 6 3.10.2 Ordena alfabéticamente 6 3.10.3 Ruta en Finder 6 3.10.4 Preferencias vista columnas 7 3.11 Vista previa 7 3.11.1 Añadir extensiones 7 3.11.2 Ver pdf inmediatamente o descargarlo 7 3.11.3 Zoom en modo vista previa 7 3.11.4 Crear pdf multipáginas desde imágenes en Vista Previa 7 3.12 Calendarios 8 3.12.1 Mezclar múltiples calendarios en uno 8 3.12.2 Sincronizar iCal y Google Calendar 8 3.13 Opciones avanzadas en cuentas 8 3.14 Correo 8 3.14.1 Thunderbird es indexado por Spotlight 8 3.14.2 Reparar índice en Mail 8 3.14.3 Correos con CCO (con copia oculta) 8 3.14.4 Copia del perfil de Mail 8 3.14.5 MS Entourage 9 3.15 Conexión a escritorio remoto 9 3.16 Añadir radios a iTunes 9 3.17 CD / DVD 9 3.17.1 Quemar un DVD-Video 9 3.17.2 Pasdar de .iso a .dmg y al revés 9 3.17.3 Crear una imagen ISO 9 3.18 Borrado seguro espacio libre 10 3.19 Borrar todas las papeleras de -
Vcenter Server Upgrade
vCenter Server Upgrade Update 2 VMware vSphere 7.0 vCenter Server 7.0 vCenter Server Upgrade You can find the most up-to-date technical documentation on the VMware website at: https://docs.vmware.com/ VMware, Inc. 3401 Hillview Ave. Palo Alto, CA 94304 www.vmware.com © Copyright 2018-2021 VMware, Inc. All rights reserved. Copyright and trademark information. VMware, Inc. 2 Contents 1 About vCenter Server Upgrade 7 2 vCenter Server Upgrade Options 8 Overview of the vSphere Upgrade Process 8 Overview of the vCenter Server Upgrade Process 10 vCenter Server Upgrade Compatibility 12 vCenter Server 7.0 Component Behavior Changes That Affect Upgrade 13 Removal of Platform Services Controller 14 Upgrade or Migration for vCenter Server Instances with an External Platform Services Controller 14 Upgrading or Migrating to vSphere License Service 15 Upgrading the Trust Authority vCenter Server 16 Differences Between vSphere Upgrades, Patches, Updates, and Migrations 16 Support for Upgrading a vCenter Server with Multi-Homing 17 Support for Federal Information Processing Standard 140-2 17 Support for Transport Security Layer 1.2 17 Moving from a Deprecated to a Supported vCenter Server Deployment Topology Before Upgrade or Migration 18 Example Upgrade Paths from vCenter Server 6.5 and 6.7 to vCenter Server 7.0 19 Example Migration Paths from vCenter Server for Windows to vCenter Server 7.0 20 3 Upgrading the vCenter Server Appliance 22 About the Upgrade Process of the vCenter Server Appliance 24 System Requirements for the New vCenter Server Appliance -
Opencore Reference Manual (0.5.9::::::::: 0.6.0) [2020.07.05]
OpenCore Reference Manual (0.5.90.6.0::::::::: ) [2020.07.05] Copyright ©2018-2020 vit9696 1 Introduction This document provides information on OpenCore user configuration file format used to setup the correct functioning of macOS operating system. It is to be read as the official clarification of expected OpenCore behaviour. All deviations, if found in published OpenCore releases, shall be considered documentation or implementation bugs, and are requested to be reported through Acidanthera Bugtracker. ::::::Errata :::::sheet::is::::::::available:::in OpenCorePkg repository.: This document is structured as a specification, and is not meant to provide a step by step algorithm for configuring end-user board support package (BSP). The intended audience of the document are programmers and engineers with basic understanding of macOS internals and UEFI functioning. For these reasons this document is available exclusively in English, and all other sources or translations of this document are unofficial and may contain errors. Third-party articles, utilities, books, and alike may be more useful for a wider audience as they could provide guide-like material. However, they are prone to their authors’ preferences, tastes, this document misinterpretation, and essential obsolescence. In case you use these sources, for example, Dortania’s OpenCore Desktop Guide and related material, please ensure to follow this document for every made decision and judge its consequences. Be warned that regardless of the sources used you are required to fully understand every dedicated OpenCore configuration option and concept prior to reporting any issues in Acidanthera Bugtracker. 1.1 Generic Terms • plist — Subset of ASCII Property List format written in XML, also know as XML plist format version 1. -
Interacting with *OS Hardware from User Space
Interacting with *OS Hardware from User Space ??? Jiska Classen Secure Mobile Networking Lab - SEEMOO Technical University of Darmstadt, Germany As a… hardware hacker I want to… buy iPhones So that… I can break the most recent chips Wait, what? ● Official development kits often lag behind. ○ Bluetooth/Wi-Fi kits by Cypress (aka Broadcom) are stuck on a firmware state around 2016. ○ Ultra Wideband kits by Decawave added features like direction measurement much later than it was available in iPhones. ● Official development kits miss proprietary features. ○ Intel baseband chips use a proprietary, undocumented interface on Apple devices. Bluetooth Chip Build Dates iPhone 11: Oct 25 2018 iPhone 12: Oct 29 2019 Samsung Galaxy S21: April 13 2018 (S21+ Ultra probably got an update) Hardware in an iPhone ● Bluetooth+Wi-Fi combo chip by Broadcom ● Baseband chip by Intel or Qualcomm ● U1 chip (in-house, since iPhone 11) ● NFC chip ● … and that’s just the wireless chips! If I deal with iPhones, jailbreaks, etc. I can access quite a lot of hardware Goals 1. Find chip interfaces. 2. Find protocol handlers. 3. Decode proprietary protocols. 4. Inject custom payloads. ??? Why from user space?! ● The daemon that interacts with the chip already holds a correct state. ○ Chip initialization/activation on startup and when leaving flight mode. ○ Complex protocol internals are implemented here. ● The daemon’s protocol implementation will typically: ○ parse crash logs, ○ acknowledge packets, CommCenter ○ forward information to other daemons, ○ … User Space Kernel Space ● FЯIDA only supports user space. Hardware But you said *OS??! ● XNU kernel is very similar on MacOS, iOS, and the iOS derivatives like audioOS, watchOS, tvOS, … ● User space is also mostly similar. -
Mac OS X Desktop.Pdf
Apple Training Series Mac OS X Support Essentials v10.6 Kevin M. White Apple Training Series: Mac OS X Support Essentials v10.6 Kevin M. White Copyright © 2010 by Apple Inc. Published by Peachpit Press. For information on Peachpit Press books, contact: Peachpit Press 1249 Eighth Street Berkeley, CA 94710 510/524-2178 510/524-2221 (fax) www.peachpit.com To report errors, please send a note to [email protected]. Peachpit Press is a division of Pearson Education. Apple Training Series Editor: Rebecca Freed Production Editors: Danielle Foster, Becky Winter Copyeditor: Peggy Nauts Tech Editor: Gordon Davisson Apple Editor: Shane Ross Proofreader: Suzie Nasol Compositor: Danielle Foster Indexer: Valerie Perry Cover design: Mimi Heft Cover illustrator: Kent Oberheu Notice of Rights All rights reserved. No part of this book may be reproduced or transmitted in any form by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the publisher. For infor- mation on getting permission for reprints and excerpts, contact [email protected]. Notice of Liability The information in this book is distributed on an “As Is” basis without warranty. While every precaution has been taken in the preparation of the book, neither the author nor Peachpit shall have any liability to any person or entity with respect to any loss or damage caused or alleged to be caused directly or indirectly by the instructions contained in this book or by the computer software and hardware products described in it. Trademarks Many of the designations used by manufacturers and sellers to distinguish their products are claimed as trademarks. -
INSTALLING the PRINT DRIVER Ignore the Detailed Instructions: PRINTING
INSTALLING THE PRINT DRIVER Ignore the detailed instructions: PRINTING To print wirelessly from your Mac at SMPL, In any program, print as you would you must install a driver. This will only work normally. When the Print dialog box with Mac OS 10.4 or later (Tiger or appears, the printer you chose will be one Leopard). of your choices: Go to www.smpl.org/depts/im/WiFiPrinting.html Choose the first or second floor location and click MacOS . Choose Open with DiskImageMounter in the dialog box: SMPL has already customized this software for our network. Click Continue. When the installer finishes, you are ready to print. If you’d like to verify your installation, open System Preferences: Select it, and click Print. This will mount the disk image Choose Print & Fax and Choose a name and password (optional) Popup 8.0: look for Mac_WiFi_Printer or for your document and click Print again to 2nd_Floor_Mac_Wifi_Printer on your list of send it off: printers: The installer is inside: Double click to launch it, then click through the menus. Note: Passwords are case sensitive. TO GET YOUR PRINT JOB Wi-Fi Printing There are two locations: 1st Floor Copy Santa Monica Public Center and 2nd Floor to the left of the UNINSTALLING THE PRINT DRIVER Reference Desk. Insert your library card Main Library or print card into the box located next If you plan to print at SMPL in the future, to the printer. you can leave the driver installed. It is very small and will not affect your computer’s other functions.