Tools for Solving Windows Problems
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Operating System Boot from Fully Encrypted Device
Masaryk University Faculty of Informatics Operating system boot from fully encrypted device Bachelor’s Thesis Daniel Chromik Brno, Fall 2016 Replace this page with a copy of the official signed thesis assignment and the copy of the Statement of an Author. Declaration Hereby I declare that this paper is my original authorial work, which I have worked out by my own. All sources, references and literature used or excerpted during elaboration of this work are properly cited and listed in complete reference to the due source. Daniel Chromik Advisor: ing. Milan Brož i Acknowledgement I would like to thank my advisor, Ing. Milan Brož, for his guidance and his patience of a saint. Another round of thanks I would like to send towards my family and friends for their support. ii Abstract The goal of this work is description of existing solutions for boot- ing Linux and Windows from fully encrypted devices with Secure Boot. Before that, though, early boot process and bootloaders are de- scribed. A simple Linux distribution is then set up to boot from a fully encrypted device. And lastly, existing Windows encryption solutions are described. iii Keywords boot process, Linux, Windows, disk encryption, GRUB 2, LUKS iv Contents 1 Introduction ............................1 1.1 Thesis goals ..........................1 1.2 Thesis structure ........................2 2 Boot Process Description ....................3 2.1 Early Boot Process ......................3 2.2 Firmware interfaces ......................4 2.2.1 BIOS – Basic Input/Output System . .4 2.2.2 UEFI – Unified Extended Firmware Interface .5 2.3 Partitioning tables ......................5 2.3.1 MBR – Master Boot Record . -
Tools for Managing Acls Jesper M Johansson
Security watch Tools for managing ACLs Jesper M Johansson Before I go into how to save or re- In Windows, access control lists (ACLs) store ACLs, let me first explore why it is so difficult. Let’s say you have a hier- give you extremely fine control over archy containing user data for students at a local college. You save the ACL on the ability of users and processes to 1 February. On 17 April you discover that somehow the ACL has been cor- use resources such as files and folders. rupted and you go to restore it from the saved copy. What complications Managing ACLs can be one of the more could there be with this operation? First, the new quarter started on complicated tasks related to protecting the 2 April. About 15 per cent of your students graduated; consequently, security of your users’ systems. Fortunately, their directories no longer exist. Thus, you have ACLs in the backup file that there are a number of useful utilities are invalid. You also have a batch of new students, another 15 per cent, that that help automate and simplify tasks granular permissions introduced with started with the new quarter. They surrounding permissions and ACLs. Windows 2000, making this an update have home directories now, but no Most readers are familiar with the that is about seven years overdue. ACLs in the backup file. What should venerable cacls.exe tool that has been Surprisingly, in spite of being dep- their ACLs be? Then of course you in every version of Windows NT since recated, cacls.exe does actually include have the 70 per cent that are still there, it first came out. -
Attachment D to Adm. Memo No. 004 INSTRUCTIONS FOR
Attachment D to Adm. Memo No. 004 INSTRUCTIONS FOR FORMATTING A DISKETTE Formatting is the preparation of diskettes for storage of information. There are several different versions of the format command that can be used. The version that you use depends upon the type of diskette and the type of disk drive in which the diskette is being formatted. In order for us to be able to read the Tuition Grant diskettes you send, the diskettes should be properly formatted. Below is a table that identifies the more commonly used diskette types and disk drive specifications. The correct version of the format command will appear in the row for your diskette type and drive type. The format command uses the parameter “d:” to indicate the disk drive designation. For example, your 5 ¼ drive may be the “A:” drive. Instead of typing “FORMAT D:”, replace the drive designation with “A:” and type “FORMAT A:”. To verify that the disks were formatted correctly, perform the CHKDSK command on the newly formatted diskette. The format for the CHKDSK command is “CHKDSK d:”. When the command returns the disk information, compare it to the information in the fourth column of the table that corresponds to your diskette type and disk drive.. If the “total disk space” numbers are the same, the diskette is formatted correctly. DISK TYPE DRIVE TYPE FORMAT COMMAND SPACE INFO. 5 ¼” DSDD DSDD FORMAT d: 362,496 bytes total disk space 5 ¼” DSDD HD FORMAT d: /T:40 /N:9 362,496 bytes total disk space 5 ¼” HD DSDD Cannot be formatted 5 ¼” HD HD FORMAT d: 1,213,952 bytes total disk space 3 ½” DSDD DSDD FORMAT d: 730,112 bytes total disk space 3 ½” DSDD HD FORMAT d: /T:80 /N:9 730,112 bytes total disk space 3 ½” HD DSDD Cannot be formatted 3 ½” HD HD FORMAT d: 1,457,664 bytes total disk space 3 ½” DSHD FORMAT d: 1,457,664 bytes total disk space. -
Restoration Onto Different Hardware (PDF)
Restoration onto different Hardware Quick and easy system restore with O&O DiskImage Table of contents System restoration using boot media ...................................................................................... 1 Restoration onto different hardware ....................................................................................... 2 Limitations when restoring onto different hardware ................................................................................................................. 3 Automatic update............................................................................................................................... ............................................. 3 Manual adaptation .......................................................................................................................................................................... 4 Enable automatic adaptation on changed hardware (M.I.R.) .................................................................................................... 4 Assistance when error messages occur during booting .......................................................... 7 I System restoration using boot media Disks where you save your private and business data can be quickly imaged and restored in the event of a crash or hardware damage. Creating an image of your entire computer or the system partition is also very easy. To restore an image of a Windows system, you’ll need to start O&O DiskImage directly from a bootable medium *. *Note You’ll need to -
Ubuntu Kung Fu
Prepared exclusively for Alison Tyler Download at Boykma.Com What readers are saying about Ubuntu Kung Fu Ubuntu Kung Fu is excellent. The tips are fun and the hope of discov- ering hidden gems makes it a worthwhile task. John Southern Former editor of Linux Magazine I enjoyed Ubuntu Kung Fu and learned some new things. I would rec- ommend this book—nice tips and a lot of fun to be had. Carthik Sharma Creator of the Ubuntu Blog (http://ubuntu.wordpress.com) Wow! There are some great tips here! I have used Ubuntu since April 2005, starting with version 5.04. I found much in this book to inspire me and to teach me, and it answered lingering questions I didn’t know I had. The book is a good resource that I will gladly recommend to both newcomers and veteran users. Matthew Helmke Administrator, Ubuntu Forums Ubuntu Kung Fu is a fantastic compendium of useful, uncommon Ubuntu knowledge. Eric Hewitt Consultant, LiveLogic, LLC Prepared exclusively for Alison Tyler Download at Boykma.Com Ubuntu Kung Fu Tips, Tricks, Hints, and Hacks Keir Thomas The Pragmatic Bookshelf Raleigh, North Carolina Dallas, Texas Prepared exclusively for Alison Tyler Download at Boykma.Com Many of the designations used by manufacturers and sellers to distinguish their prod- ucts are claimed as trademarks. Where those designations appear in this book, and The Pragmatic Programmers, LLC was aware of a trademark claim, the designations have been printed in initial capital letters or in all capitals. The Pragmatic Starter Kit, The Pragmatic Programmer, Pragmatic Programming, Pragmatic Bookshelf and the linking g device are trademarks of The Pragmatic Programmers, LLC. -
TK Backman, Jason Yang, SW Development at MS
T.K. Backman Jason Yang [email protected] [email protected] Principal Development Lead Principal Development Lead Debugging and Tools Group Analysis Technologies Team Windows Engineering Desktop Windows Engineering Desktop Microsoft Corporation Microsoft Corporationnnn Code on a massive scale Developers on a massive scale Tight constraints on schedules University of Washington 3/2/2011 2 ◦ Company structure Why the world is not just about developers ☺ ◦ Innovation strategy How we actually improve software over time ◦ Dynamic tension When people are involved, everything changes ◦ Development cycles How we build software products in cycles ◦ Program analysis How we push quality upstream ◦ Windows engineering system How we build large-scale products University of Washington 3/2/2011 3 ◦ Total size: ~89,000 employees ◦ Windows & Office – “perfect org structure” PM – program managers Dev – software developers Test – software developers in test ◦ Around 1000 PM+Dev+Test feature teams on 100s of products University of Washington 3/2/2011 4 ◦ Team size: ~10,000 employees ◦ Sales & marketing ◦ Project managers / product managers ◦ 30 feature teams 1500 Devs 1500 Testers 1000 PMs ◦ Customer support engineers ◦ Build engineers University of Washington 3/2/2011 5 “I often say that when you can measure what you are speaking about, and express it in numbers, you know something about it; but when you cannot measure it, when you cannot express it in numbers, your knowledge is of a meager and unsatisfactory kind; it may be the beginning -
F.A.Q. Series ROM-DOS TM
21520 30th Drive SE #110 Bothell, WA 98021 USA Tel: (425) 951-8086 Fax: (425) 951-8095 [email protected] [email protected] www.datalight.com TM ROM-DOS F.A.Q. Series Question: Assuming they don't want FAT32, Long Filename support, or Sockets, why should my customer upgrade to the newest ROM-DOS? Answer: Since our first FAT32 and LFN release 4.00.1091, there have been several improvements to the core ROM- DOS kernel. This core code is used primarily for our DOS 6.22 compatible compilations, and then extended in the case of a FAT32 or Long Filename build. The 4.00.1091 release is also a new code base and there will be no further upgrades to the previous DOS 6.22 code. In order to obtain new features, fixes, and support a customer must upgrade to release 4.00.1091 or greater. Along with the performance enhancements for both size and speed, several corrections have been made to the ROM-DOS kernel. These include stack and memory issues, disk access issues, and compatibility with the former market leader in DOS. Most of the ROM-DOS utilities have also been improved for size and speed, along with bug fixes. The major changes happened with the XCOPY, HIMEM, MSCDEX, CHKDSK, FDISK and FORMAT utilities. In the realm of international support, the Euro was added to the keyboard and display driver code. ROM- DOS and PC-DOS 2000 are the only non-GUI operating systems to support the Euro. Finally, new ROM-DOS utilities have been added. -
Scheduling, Thread Context, and IRQL
Scheduling, Thread Context, and IRQL December 31, 2020 Abstract This paper presents information about how thread scheduling, thread context, and a processor’s current interrupt request level (IRQL) affect the operation of kernel- mode drivers for the Microsoft® Windows® family of operating systems. It is intended to provide driver writers with a greater understanding of the environment in which their code runs. A companion paper, “Locks, Deadlocks, and Synchronization” at http://www.microsoft.com/whdc/hwdev/driver/LOCKS.mspx, builds on these fundamental concepts to address synchronization issues in drivers. Contents Introduction ....................................................................................................................... 3 Thread Scheduling ............................................................................................................ 3 Thread Context and Driver Routines .................................................................................. 4 Driver Threads .................................................................................................................. 5 Interrupt Request Levels .................................................................................................... 6 Processor-Specific and Thread-Specific IRQLs .............................................................. 8 IRQL PASSIVE_LEVEL ............................................................................................ 8 IRQL PASSIVE_LEVEL, in a critical region .............................................................. -
Tokenvator Release 3 Written by Alexander Polce Leary | July 22, 2021 Tokenvator Release 3 Is a Long Overdue Update That Includes a Major Overhaul to the Tool
Tokenvator Release 3 written by Alexander Polce Leary | July 22, 2021 Tokenvator Release 3 is a long overdue update that includes a major overhaul to the tool. From the user interface, it will be mostly familiar with some command line tweaks. Under the surface, large portions of the code base have been reworked, and parts of the base have had some updates. In this series, we will go over some of the changes and new features added. Teaser Alert: Adding Privileges & Creating Tokens Improvements First and foremost, the user interface. Historically, every action had a series of positional arguments that were clunky and generally difficult to remember. They were also not very flexible, and as the commands started to have more, and additional optional arguments, they became completely unwieldy. These have been replaced with flags that will auto complete. For instance, to list and enable privileges: This also works in the non-interactive mode (though it won’t tab complete – sorry, it’s Windows): Additionally, the scroll back function was improved and numerous bugs were resolved. For instance, now when you press up you will always go to the last command issued. A printable command history has also been added if you want to copy and paste instead or keep a log of your actions. The info functionality was improved again, removing many bugs and adding additional information, such as impersonation contexts: (Tokens) > whoami [*] Operating as NT AUTHORITY\SYSTEM (Tokens) > info [*] Primary Token [+] User: S-1-5-21-258464558-1780981397-2849438727-1001 -
Oracle® Database Administrator's Reference
Oracle® Database Administrator's Reference 18c for Microsoft Windows E83889-01 August 2018 Oracle Database Administrator's Reference, 18c for Microsoft Windows E83889-01 Copyright © 1996, 2018, Oracle and/or its affiliates. All rights reserved. Primary Authors: Tanaya Bhattacharjee, Sunil Surabhi, Mark Bauer Contributing Authors: Lance Ashdown Contributors: Alexander Key, Sivaselvam Narayanasamy, Ricky Chen, David Collelo, David Friedman, Prakash Jashnani, Sue K. Lee, Rich Long, Satish Panchumarthy, Ravi Thammaiah, Michael Verheij This software and related documentation are provided under a license agreement containing restrictions on use and disclosure and are protected by intellectual property laws. Except as expressly permitted in your license agreement or allowed by law, you may not use, copy, reproduce, translate, broadcast, modify, license, transmit, distribute, exhibit, perform, publish, or display any part, in any form, or by any means. Reverse engineering, disassembly, or decompilation of this software, unless required by law for interoperability, is prohibited. The information contained herein is subject to change without notice and is not warranted to be error-free. If you find any errors, please report them to us in writing. If this is software or related documentation that is delivered to the U.S. Government or anyone licensing it on behalf of the U.S. Government, then the following notice is applicable: U.S. GOVERNMENT END USERS: Oracle programs, including any operating system, integrated software, any programs installed on the hardware, and/or documentation, delivered to U.S. Government end users are "commercial computer software" pursuant to the applicable Federal Acquisition Regulation and agency- specific supplemental regulations. As such, use, duplication, disclosure, modification, and adaptation of the programs, including any operating system, integrated software, any programs installed on the hardware, and/or documentation, shall be subject to license terms and license restrictions applicable to the programs. -
Where Do You Want to Go Today? Escalating
Where Do You Want to Go Today? ∗ Escalating Privileges by Pathname Manipulation Suresh Chari Shai Halevi Wietse Venema IBM T.J. Watson Research Center, Hawthorne, New York, USA Abstract 1. Introduction We analyze filename-based privilege escalation attacks, In this work we take another look at the problem of where an attacker creates filesystem links, thereby “trick- privilege escalation via manipulation of filesystem names. ing” a victim program into opening unintended files. Historically, attention has focused on attacks against priv- We develop primitives for a POSIX environment, provid- ileged processes that open files in directories that are ing assurance that files in “safe directories” (such as writable by an attacker. One classical example is email /etc/passwd) cannot be opened by looking up a file by delivery in the UNIX environment (e.g., [9]). Here, an “unsafe pathname” (such as a pathname that resolves the mail-delivery directory (e.g., /var/mail) is often through a symbolic link in a world-writable directory). In group or world writable. An adversarial user may use today's UNIX systems, solutions to this problem are typ- its write permission to create a hard link or symlink at ically built into (some) applications and use application- /var/mail/root that resolves to /etc/passwd. A specific knowledge about (un)safety of certain directories. simple-minded mail-delivery program that appends mail to In contrast, we seek solutions that can be implemented in the file /var/mail/root can have disastrous implica- the filesystem itself (or a library on top of it), thus providing tions for system security. -
Vmware ESX Host Utilities 5.2.1 Installation and Setup Guide
IBM System Storage N series VMWare ESX Host Utilities 5.2.1 Installation and Setup Guide GC53-1173-03 NA 210-05158_A0 Table of Contents | 3 Contents Supported features ....................................................................................... 7 Getting information, help, and services ...................................................... 9 Before you call ............................................................................................................ 9 Using the documentation ............................................................................................. 9 Web sites ................................................................................................................... 10 Accessing online technical support ........................................................................... 10 Hardware service and support ................................................................................... 10 Supported servers and operating systems .................................................................. 10 Firmware updates ...................................................................................................... 10 How to send your comments ...................................................................... 13 Changes to this document: March 2011 ................................................... 15 Introduction to Host Utilities ..................................................................... 17 What the Host Utilities are .......................................................................................