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Pwny Documentation Release 0.9.0
pwny Documentation Release 0.9.0 Author Nov 19, 2017 Contents 1 pwny package 3 2 pwnypack package 5 2.1 asm – (Dis)assembler..........................................5 2.2 bytecode – Python bytecode manipulation..............................7 2.3 codec – Data transformation...................................... 11 2.4 elf – ELF file parsing.......................................... 16 2.5 flow – Communication......................................... 36 2.6 fmtstring – Format strings...................................... 41 2.7 marshal – Python marshal loader................................... 42 2.8 oracle – Padding oracle attacks.................................... 43 2.9 packing – Data (un)packing...................................... 44 2.10 php – PHP related functions....................................... 46 2.11 pickle – Pickle tools.......................................... 47 2.12 py_internals – Python internals.................................. 49 2.13 rop – ROP gadgets........................................... 50 2.14 shellcode – Shellcode generator................................... 50 2.15 target – Target definition....................................... 79 2.16 util – Utility functions......................................... 80 3 Indices and tables 83 Python Module Index 85 i ii pwny Documentation, Release 0.9.0 pwnypack is the official CTF toolkit of Certified Edible Dinosaurs. It aims to provide a set of command line utilities and a python library that are useful when playing hacking CTFs. The core functionality of pwnypack -
Protecting Million-User Ios Apps with Obfuscation: Motivations, Pitfalls, and Experience
Protecting Million-User iOS Apps with Obfuscation: Motivations, Pitfalls, and Experience Pei Wang∗ Dinghao Wu Zhaofeng Chen Tao Wei [email protected] [email protected] [email protected] [email protected] The Pennsylvania State The Pennsylvania State Baidu X-Lab Baidu X-Lab University University ABSTRACT ACM Reference Format: In recent years, mobile apps have become the infrastructure of many Pei Wang, Dinghao Wu, Zhaofeng Chen, and Tao Wei. 2018. Protecting popular Internet services. It is now fairly common that a mobile app Million-User iOS Apps with Obfuscation: Motivations, Pitfalls, and Experi- ence. In ICSE-SEIP ’18: 40th International Conference on Software Engineering: serves a large number of users across the globe. Different from web- Software Engineering in Practice Track, May 27–June 3, 2018, Gothenburg, based services whose important program logic is mostly placed on Sweden. ACM, New York, NY, USA, 10 pages. https://doi.org/10.1145/3183519. remote servers, many mobile apps require complicated client-side 3183524 code to perform tasks that are critical to the businesses. The code of mobile apps can be easily accessed by any party after the software is installed on a rooted or jailbroken device. By examining the code, skilled reverse engineers can learn various knowledge about the 1 INTRODUCTION design and implementation of an app. Real-world cases have shown During the last decade, mobile devices and apps have become the that the disclosed critical information allows malicious parties to foundations of many million-dollar businesses operated globally. abuse or exploit the app-provided services for unrightful profits, However, the prosperity has drawn many malevolent attempts to leading to significant financial losses for app vendors. -
Hacking Roomba®
Hacking Roomba® Tod E. Kurt Wiley Publishing, Inc. Hacking Roomba® Published by Wiley Publishing, Inc. 10475 Crosspoint Boulevard Indianapolis, IN 46256 www.wiley.com Copyright © 2007 by Wiley Publishing, Inc., Indianapolis, Indiana Published simultaneously in Canada ISBN-13: 978-0-470-07271-4 ISBN-10: 0-470-07271-7 Manufactured in the United States of America 10 9 8 7 6 5 4 3 2 1 No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, scanning or otherwise, except as permitted under Sections 107 or 108 of the 1976 United States Copyright Act, without either the prior written permission of the Publisher, or authorization through payment of the appropriate per-copy fee to the Copyright Clearance Center, 222 Rosewood Drive, Danvers, MA 01923, (978) 750-8400, fax (978) 646-8600. Requests to the Publisher for permission should be addressed to the Legal Department, Wiley Publishing, Inc., 10475 Crosspoint Blvd., Indianapolis, IN 46256, (317) 572-3447, fax (317) 572-4355, or online at http://www.wiley.com/go/permissions. Limit of Liability/Disclaimer of Warranty: The publisher and the author make no representations or warranties with respect to the accuracy or completeness of the contents of this work and specifically disclaim all warranties, including without limitation warranties of fitness for a particular purpose. No warranty may be created or extended by sales or promotional materials. The advice and strategies contained herein may not be suitable for every situation. This work is sold with the understanding that the publisher is not engaged in rendering legal, accounting, or other professional services. -
Using Arm Scalable Vector Extension to Optimize OPEN MPI
Using Arm Scalable Vector Extension to Optimize OPEN MPI Dong Zhong1,2, Pavel Shamis4, Qinglei Cao1,2, George Bosilca1,2, Shinji Sumimoto3, Kenichi Miura3, and Jack Dongarra1,2 1Innovative Computing Laboratory, The University of Tennessee, US 2fdzhong, [email protected], fbosilca, [email protected] 3Fujitsu Ltd, fsumimoto.shinji, [email protected] 4Arm, [email protected] Abstract— As the scale of high-performance computing (HPC) with extension instruction sets. systems continues to grow, increasing levels of parallelism must SVE is a vector extension for AArch64 execution mode be implored to achieve optimal performance. Recently, the for the A64 instruction set of the Armv8 architecture [4], [5]. processors support wide vector extensions, vectorization becomes much more important to exploit the potential peak performance Unlike other SIMD architectures, SVE does not define the size of target architecture. Novel processor architectures, such as of the vector registers, instead it provides a range of different the Armv8-A architecture, introduce Scalable Vector Extension values which permit vector code to adapt automatically to the (SVE) - an optional separate architectural extension with a new current vector length at runtime with the feature of Vector set of A64 instruction encodings, which enables even greater Length Agnostic (VLA) programming [6], [7]. Vector length parallelisms. In this paper, we analyze the usage and performance of the constrains in the range from a minimum of 128 bits up to a SVE instructions in Arm SVE vector Instruction Set Architec- maximum of 2048 bits in increments of 128 bits. ture (ISA); and utilize those instructions to improve the memcpy SVE not only takes advantage of using long vectors but also and various local reduction operations. -
Anatomy of Cross-Compilation Toolchains
Embedded Linux Conference Europe 2016 Anatomy of cross-compilation toolchains Thomas Petazzoni free electrons [email protected] Artwork and Photography by Jason Freeny free electrons - Embedded Linux, kernel, drivers - Development, consulting, training and support. http://free-electrons.com 1/1 Thomas Petazzoni I CTO and Embedded Linux engineer at Free Electrons I Embedded Linux specialists. I Development, consulting and training. I http://free-electrons.com I Contributions I Kernel support for the Marvell Armada ARM SoCs from Marvell I Major contributor to Buildroot, an open-source, simple and fast embedded Linux build system I Living in Toulouse, south west of France Drawing from Frank Tizzoni, at Kernel Recipes 2016 free electrons - Embedded Linux, kernel, drivers - Development, consulting, training and support. http://free-electrons.com 2/1 Disclaimer I I am not a toolchain developer. Not pretending to know everything about toolchains. I Experience gained from building simple toolchains in the context of Buildroot I Purpose of the talk is to give an introduction, not in-depth information. I Focused on simple gcc-based toolchains, and for a number of examples, on ARM specific details. I Will not cover advanced use cases, such as LTO, GRAPHITE optimizations, etc. I Will not cover LLVM free electrons - Embedded Linux, kernel, drivers - Development, consulting, training and support. http://free-electrons.com 3/1 What is a cross-compiling toolchain? I A set of tools that allows to build source code into binary code for -
Cross-Compiling Linux Kernels on X86 64: a Tutorial on How to Get Started
Cross-compiling Linux Kernels on x86_64: A tutorial on How to Get Started Shuah Khan Senior Linux Kernel Developer – Open Source Group Samsung Research America (Silicon Valley) [email protected] Agenda ● Cross-compile value proposition ● Preparing the system for cross-compiler installation ● Cross-compiler installation steps ● Demo – install arm and arm64 ● Compiling on architectures ● Demo – compile arm and arm64 ● Automating cross-compile testing ● Upstream cross-compile testing activity ● References and Package repositories ● Q&A Cross-compile value proposition ● 30+ architectures supported (several sub-archs) ● Native compile testing requires wide range of test systems – not practical ● Ability to cross-compile non-natively on an widely available architecture helps detect compile errors ● Coupled with emulation environments (e.g: qemu) testing on non-native architectures becomes easier ● Setting up cross-compile environment is the first and necessary step arch/ alpha frv arc microblaze h8300 s390 um arm mips hexagon score x86_64 arm64 mn10300 unicore32 ia64 sh xtensa avr32 openrisc x86 m32r sparc blackfin parisc m68k tile c6x powerpc metag cris Cross-compiler packages ● Ubuntu arm packages (12.10 or later) – gcc-arm-linux-gnueabi – gcc-arm-linux-gnueabihf ● Ubuntu arm64 packages (13.04 or later) – use arm64 repo for older Ubuntu releases. – gcc-4.7-aarch64-linux-gnu ● Ubuntu keeps adding support for compilers. Search Ubuntu repository for packages. Cross-compiler packages ● Embedded Debian Project is a good resource for alpha, mips, -
Raspberry Pi Market Research
Raspberry Pi Market Research Contents MARKET ................................................................................................................................................... 3 CONSUMERS ............................................................................................................................................ 8 COMPETITORS ....................................................................................................................................... 12 Element14 ......................................................................................................................................... 12 Gumstix- Geppetto Design ............................................................................................................... 14 Display Module .................................................................................................................................. 17 CoMo Booster For Raspberry Pi Compute Module (Geekroo Technologies ) ................................... 18 2 MARKET When the first Raspberry PI (Pi) was released in February 2012 it made a big impact that extended well beyond the education world for which it was touted. The Pi became a staple amongst the hobbyist and professional maker communities and was used for building everything from media centers, home automation systems, remote sensing devices and forming the brains of home made robots. It has recently been announced that over 5m Raspberry Pi’s have been sold since its inception, making it the best selling -
The Arms Race to Trustzone
The ARMs race to TrustZone Jonathan Levin http://Technologeeks.com (C) 2016 Jonathan Levin & Technologeeks.com - Share freely, but please cite source! `whoami` • Jonathan Levin, CTO of technologeeks[.com] – Group of experts doing consulting/training on all things internal • Author of a growing family of books: – Mac OS X/iOS Internals – Android Internals (http://NewAndroidbook.com ) – *OS Internals (http://NewOSXBook.com ) (C) 2016 Jonathan Levin – Share freely, but please cite source! For more details – Technologeeks.com Plan • TrustZone – Recap of ARMv7 and ARMv8 architecture • iOS Implementation – Apple’s “WatchTower” (Kernel Patch Protector) implementation • Android Implementations – Samsung, Qualcomm, Others (C) 2016 Jonathan Levin & Technologeeks.com - Share freely, but please cite source! TrustZone & ELx (C) 2016 Jonathan Levin & Technologeeks.com - Share freely, but please cite source! TrustZone • Hardware support for a trusted execution environment • Provides a separate “secure world” 安全世界 – Self-contained operating system – Isolated from “non-secure world” • In AArch64, integrates well with Exception Levels (例外層級) – EL3 only exists in the secure world – EL2 (hypervisor) not applicable in secure world. • De facto standard for security enforcement in mobile world (C) 2016 Jonathan Levin & Technologeeks.com - Share freely, but please cite source! TrustZone Regular User mode TrustZone (Untrusted) User mode, root (Untrusted, Privileged) Kernel mode (Trusted, Privileged) Hardware (C) 2016 Jonathan Levin & Technologeeks.com - Share freely, but please cite source! Trust Zone Architecture (Aarch32) 非安全世界 安全世界 Source: ARM documentation (C) 2016 Jonathan Levin & Technologeeks.com - Share freely, but please cite source! Android uses of TrustZone • Cryptographic hardware backing (keystore, gatekeeper) – Key generation, storage and validation are all in secure world – Non secure world only gets “tokens” – Public keys accessible in non-secure world – Secret unlocking (e.g. -
C 2014 Wenjia Zhou a LIGHTWEIGHT DSP FRAMEWORK for OMAP3530-DRIVEN EMBEDDED DEVICES
c 2014 Wenjia Zhou A LIGHTWEIGHT DSP FRAMEWORK FOR OMAP3530-DRIVEN EMBEDDED DEVICES BY WENJIA ZHOU THESIS Submitted in partial fulfillment of the requirements for the degree of Master of Science in Electrical and Computer Engineering in the Graduate College of the University of Illinois at Urbana-Champaign, 2014 Urbana, Illinois Adviser: Professor Geir E. Dullerud ABSTRACT This thesis provides a lightweight framework, called MiniDSP, for OMAP3530 heterogeneous dual core SoC to run tasks on its DSP co-processor. This framework is composed of a minimal DSP kernel and a set of programs which run on the ARM A8 master processor. The minimal kernel maintains system stability and initializes the interrupt handler. The set of programs includes a DSP device driver, a host program and two utility programs. Through the device driver, the ARM core can send commands to the DSP and control it to execute compute-intensive applications. The host program performs task off-loading and general ARM-DSP communication. Finally the two utility programs are responsible for converting the DSP executable to a bootable format used by the framework. This framework is open source, highly con- figurable and lightweight, enabling the possibility of high performance com- puting on DSP. ii To my parents, for their love and support. iii ACKNOWLEDGMENTS I would like to thank all the lab members for their generous support: Seungho Lee, for patiently guide me through all the technical details of Hovercraft; Bicheng Zhang, for keeping the lab servers up and live; Steve Granda, for the help of debugging the system; Richard Otap, for all Gumstix software introduction; and Rohan Khanna, for helping me put the hardware pieces together. -
Proyecto Fin De Grado
ESCUELA TÉCNICA SUPERIOR DE INGENIERÍA Y SISTEMAS DE TELECOMUNICACIÓN PROYECTO FIN DE GRADO TÍTULO: Despliegue de Liota (Little IoT Agent) en Raspberry Pi AUTOR: Ricardo Amador Pérez TITULACIÓN: Ingeniería Telemática TUTOR (o Director en su caso): Antonio da Silva Fariña DEPARTAMENTO: Departamento de Ingeniería Telemática y Electrónica VºBº Miembros del Tribunal Calificador: PRESIDENTE: David Luengo García VOCAL: Antonio da Silva Fariña SECRETARIO: Ana Belén García Hernando Fecha de lectura: Calificación: El Secretario, Despliegue de Liota (Little IoT Agent) en Raspberry Pi Quizás de todas las líneas que he escrito para este proyecto, estas sean a la vez las más fáciles y las más difíciles de todas. Fáciles porque podría doblar la longitud de este proyecto solo agradeciendo a mis padres la infinita paciencia que han tenido conmigo, el apoyo que me han dado siempre, y el esfuerzo que han hecho para que estas líneas se hagan realidad. Por todo ello y mil cosas más, gracias. Mamá, papá, lo he conseguido. Fáciles porque sin mi tutor Antonio, este proyecto tampoco sería una realidad, no solo por su propia labor de tutor, si no porque literalmente sin su ayuda no se hubiera entregado a tiempo y funcionando. Después de esto Antonio, voy a tener que dejarme ganar algún combate en kenpo como agradecimiento. Fáciles porque, sí melones os toca a vosotros, Alex, Alfonso, Manu, Sama, habéis sido mi apoyo más grande en los momentos más difíciles y oscuros, y mis mejores compañeros en los momentos de felicidad. Amigos de Kulturales, los hermanos Baños por empujarme a mejorar, Pablo por ser un ejemplo a seguir, Chou, por ser de los mejores profesores y amigos que he tenido jamás. -
2021-01-20-Netbsd-Raspi-Earmv6hf.Img (Re: Raspber
大阪 NetBSD 2021 Announcing NetBSD 9.1 (Oct 18, 2020) http://www.netbsd.org/releases/formal-9/NetBSD-9.... Announcing NetBSD 9.1 (Oct 18, 2020) Introduction The NetBSD Project is pleased to announce NetBSD 9.1, the first update of the NetBSD 9 release branch. It represents a selected subset of fixes deemed important for security or stability reasons, as well as new features $11,824 raised of $50,000 goal and enhancements. Here are some highlights of this new release. Home Recent changes Highlights NetBSD blog Parallelized disk encryption with cgd(4). Presentations Added the C.UTF-8 locale. About Added support for Xen 4.13. Various reliability fixes and improvements for ZFS. Added support for ZFS on dk(4) wedges on ld(4). Developers NVMM hypervisor updated, bringing improved emulation, performance, and stability. Gallery Additional settings for the NPF firewall, updated documentation, and various npfctl(8) usability Ports improvements. X11 improvements, default window manager switched to ctwm(1), enabled sixel support in xterm(1), fixes Packages for older Intel chipsets Documentation Stability improvements for LFS, the BSD log-structured filesystem. Added support for using USB security keys in raw mode, usable in Firefox and other applications. FAQ & HOWTOs Added support for more hardware RNGs in the entropy subsystem, including those in Allwinner and The Guide Rockchip SoCs. Manual pages Various audio system fixes, resolving NetBSD 7 and OSSv4 compatibility edge-cases, among other issues. Added aq(4), a driver for Aquantia 10 gigabit ethernet adapters. Wiki Added uxrcom(4), a driver for Exar single and multi-port USB serial adapters. -
Always Be Cross-Compiling
Always be Cross-compiling Matthew Bauer, John Ericson October 9, 2019 Always be cross compiling Who needs cross-compilation? I Used to create executables for a system different than we are currently on I While native compilation is usually easier and better supported, we need cross-compilation for: I embedded systems, no Nix I windows, no Nix (yet) I new operating systems I architectures where we haven’t made bootstrap tools History I Nixpkgs has had cross-compilation support for a while. I But, it was considered separate from native compilation, requiring special crossAttrs args. I Recent efforts make cross-compilation less exceptional, allowing us to reuse native infrastructure. This reduces duplication between package expressions. What is a system string? I Two ways to specify target systems exist. Both are supported in Nixpkgs through crossSystem and localSystem mechanisms. I A system string is meant to specify some group of computers by architecture, operating system, or ABI. Nix system tuple (system) I Format: <arch>-<os> I Examples: I x86_64-linux I x86_64-darwin I aarch64-linux I i686-windows I arm-none I Nix internally doesn’t care about libc or vendor. LLVM triple, also know as GNU config (config) I Format: <arch>-<vendor>-<os>-<libc> I Examples: I x86_64-unknown-linux-gnu I x86_64-apple-darwin I aarch64-unknown-linux-musl I i686-pc-mingw32 I arm-none-eabi I Actually has up to 4 parts, making it a quadruple not a triple. libc is optional on systems where there is only one standard Libc. History I Original GNU config just had 3 parts.