Hacking with ARM devices on Linux
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The document outlines a presentation by Kenji Shimono on hacking and customizing ARM devices with Linux, focusing on various topics including customizing Android devices, using Linux distributions on ARM, and exploring end-of-life devices. It discusses techniques like chroot environments, package managers, and emulator performance on ARM devices compared to x86. The session aims to share knowledge and experiences within the open-source community regarding ARM-based technologies.
![34
Conclusion
1,Custmized ARM Linux OS,Applications
⇒x86 Emulator and Multi-platform app incresing.
2,Customized ARM Android and Chromebook
devices
⇒Easy install Linux Distributions on Android.
3,Customized Remote desktop client on mobile PC
⇒Easy to use Thinclient on new and old PC.
4,Customized 「End of Life」 ARM devices
⇒It can be extended 「End of Life] if customized](https://image.slidesharecdn.com/netwalkeroscfossasia2016-160302090048/85/Hacking-with-ARM-devices-on-Linux-34-320.jpg)
Hacking with ARM devices on Linux
- 1. 1 Hacking with ARM devices on Linux １、 Self introduction ２、Introduction with ARM devices ３、Customized of Linux Mobile ARM devices ・Customized Android devices(Nexus7) ・ｘ86 Emulation on ARM Mobile devices ・ARM Chromebook Crouton ＆ ChrUbuntu 4、Thinclient LinuxOS OpenCocon ５、Customized 「End of Life」 ARM Devices ・Chroot ・PKGSRC ・NetBSD 6、Conclusion ・Next My Presentation Speaker： Kenji Shimono Tokaido Linux Users Group Netwalker Laboratory FOSSASIA 2016/3/19 14:00 Place：Level 1, EcoGarden Lab, Science Center Singapore This Presentation: Slideshare & PDF files publication of my HP http://kapper1224.sakura.ne.jp About Netwalker ARM Mobile Ubuntu
- 2. 2 Self Introduction ● My name: Kenji Shimono ● Pseudonym(Pen name)：Kapper ● Twitter account：＠kapper1224 ● HP：http://kapper1224.sakura.ne.jp ● Slideshare: http://www.slideshare.net/kapper1224/ ● My Hobby：Linux、*BSD、and Mobile ARM Devices ● My favorite words：Record than experiment important ● Test Model：Netwalker(PC-Z1,T1)、Nokia N900、DynabookAZ、RaspberryPi Nexus7(2012、2013)、Hercules eCAFE EX HD、Jetson TK-1、 OpenPandora、ARM Chromebook、ZTE OPEN C（FirefoxOS） Taiwan Android Electronic Dictionary 無敵CD-920、CD-928 ● Recent Activity： Windows and x86 Wine emulate on ARM devices. Hacking of Android Nexus7. I have recently often use the ARM Chromebook.
- 3. 3 Recent test こんな事やってます 1.Linux distributions on Android 2. Hacking with SmartWatch 3. Windows and Wine on ARM 4. Plesentations in Asia(HongKong,Taiwan) Opensouce Conference
- 4. 4My Activity OpenSourceConference in Japan and Tokaido Linux Uses Group Once it is held in one month Sapporo Hokkaido Tokyo Hamamatu Nagoya Kyoto Osaka (KOF) Shimane Hiroshima Oita Okinawa Kawagoe(Tokyo) Hakata Tokushima Niigata
- 5. 5 Today Session Bootloader Kernel SoC OS replace Root MultiROM Pkgsrc NetBSD Linux Distributions chroot (root) Mikutter RemoteDesktop Debian Noroot OpenCocon Easy Application only Difficult Desktop,server Office Haking developer Distributer 「End of Life」extended Target Users Mikutter x86 emu Windows app
- 6. 1.0GHz 1.6GHz 1.9GHz 2.2GHz 2.5GHz Cortex-A8 Cortex-A9 Cortex-A15 Cortex-A57 Cortex-A72 0 1 2 3 4 5 6 7 8 9 The same frequency Relative single thread performance ARM devices Benchmark score Reference：A Walk Through the Cortex-A Mobile Roadmap http://community.arm.com/groups/processors/blog/2013/11/19/a-walk-through-the-cortex-a-mobile-roadmap ARM Cortex-A roadmap ARMdevices BOINC benchmark x86 Reference：Kapper blog Estimation ARM
- 8. 8 Hacking Android easy history Android ~4.x Many Chinese Tablet Many Rooted app ↓ Only install applications Android～4.2 Nexus7 comming Bootloader is easy to unlocked ↓ Easy to Root Android～2.3 No root devices Webkit had security bug Rooted ↓ hacking Difficult Easy to root everyone Install app only
- 9. 9 Debian Noroot on Android ● Debian Noroot can be installed in a chroot without taking root privileges Android apps Debian ● You can use a Bluetooth keyboard, a simple notebook PC ● Contents to build a chroot environment in the normal user privileges use the fakechroot, are viewing the Xorg in Xserver-SDL ● There are challenges to capacity because storage is based on the premise visceral / sdcard ● The ease popular anyone can be introduced ● Recent Ver corresponding with Android4.0 later ● Difficulties in compatibility that does not move Xserver-SDL with the old OS Taiwan Electronic Dictionary 無敵CD-920
- 10. 10 Debian Kit and Complete Linux ● App to put the package to build a chroot environment on Android with apt-get. Debian reduction can be. ● I can server of the Android simple. and those that do not need as there are root of. ● Debian Kit because it is a mechanism that can be used is apt-get at the root environment of the parent process of Android, has a high degree of freedom (high risk?) ● Also old environment for the Debian Noroot can not be put Complete Linux
- 11. Nexus Root Toolkit ● Windows GUI application for Nexus7 easy Unlock and rooted １、Nexus Root toolkit app download ２、Google USB driver install in Windows ３、Connect USB to Nexus7 ４、Only click, Unlock and rooted Nexus Root Toolkit
- 12. 12 Use Xserver-SDL alone on Android ● It can also be used alone Xserver-SDL, which is also used Debian noroot as an alternative to the Xserver. ● From how to use activates the Xserver-SDL, from the terminal in Chroot environment, env DISPLAY=xxx.xxx.xxx.xxx:0 lxsession & The activated Show Xserver-SDL again on Android Complete LinuxXserver-SDL
- 13. 13 Android-own build status Distributin version Installer Multirom Root Compatible models Factoryimg ~5.1.0 ◎ ○ △ Nexus CynanobenMOD ~5.1.x ◎ ○ ○ Many AOKP ◎ ○ ○ Many ParanoidAndroid ○ ○ ○ Many ClockworkMOD ○ ○ ○ Many Bodhi Linux ～3.0 ○ ○ ○ Nexus7 2012 KDE Plazma ○ △ ○ Nexus7 2012 FirefoxOS ○ ○ △ Own build Ubuntu Touch ◎ ○ ○ Nexus7(2013） 4、5、10、6 Tizen △ △ △ ？ SalfishOS △ △ △ Nexus7,RaspberryPi Internet dogmatic investigation of Kapper (if I wrong I'm sorry. Correct) ◎：Official Support、◯：Official reports、△：Users reports Excerpt because own build of correspondence dozens type and number is too large.
- 14. CyanobenMod ● CyanogenMod Inc. and Android4.x to the various devices in one of their own build a number of Android that are customized are developing. ● Include the formal and informal support, corresponding to 220 devices ● Development from the firmware (boot loader) to the OS image.If a device that is official support, it can be installed with one click without taking root. ● Installation has a difficult but also many operations reported to the local device,It has contributed to the aftermarket of older models. ● Since correspond to the regular even Nexus7, it is easy to install. CyanobenMod9
- 15. FirefoxOS ● You can install and use FirefoxOS in Nexus7. ● Custom ROM required Since then replacement of FirefoxOS ROM.(supported device) FirefoxOS SimulatorFirefoxOS
- 16. Ubuntu Touch ● Nexus7 2013 is Ubuntu Touch supported now. ● Installer and boot loader set ● The use of Ubuntu touch is Nexus series only. Ubuntu TouchUbuntu Touch
- 17. 17 x86 Emulation and Windows applications on ARM Linux Devices
- 18. 18 ｘ８６ Emulations on ARM Devices Emulation OS Root Device Emulated OS Spec Comment Qemu Linux Android RaspberryPi No Windows MacOSX? Linux,*BSD Slow Tegra K-1 ⇒PenⅡ 266MHz Ver1.5～(ARM GUI) Qemu+Wine Linux Android RaspberryPi Required +Windows APP Slow Difficult kernel 3G/1G only chroot environment Exagear-Desktop Linux RaspberryPi Required Ubuntu,Debian Fast Tegra K-1 ⇒Pen4 1.8GHz Exagear-Desktop +Wine Linux RaspberryPi Required Ubuntu+Wine Windows APP Fast Tegra K-1 ⇒Pen4 1.8GHz DOSBox Linux Android RaspberryPi iOS,DS,PSP No DOS, WIndows9x (i386～i586） Slow Tegra K-1 ⇒PenⅡ 200MHz NEON Supports Voodoo1+Glide Bochs Linux Android RaspberryPi iOS,PSP No Windows～XP (i386～x86-64) Linux,*BSD Slow Tegra K-1 ⇒PenⅡ 266MHz XNP2 （PC-98 Emulation） Linux Android RaspberryPi iOS No DOS、 Windows95？ Slow Tegra K-1 ⇒？ Internet dogmatic investigation of Kapper (if I wrong it, I'm sorry. ) VMWare and Virtualbox are not working on ARM devices.(Only x86)
- 19. 19 x８６ Qemu Emulation on ARM devices Cortex-A15 Tegra K-1 2.1GHz Core i5-2540M 2.60GHz Cortex-A15 Tegra K-1 2.1GHz Core i5-2540M 2.60GHz Acer Chromebook13 Qemu Win2000 HDBench4.6.1 CF-S10 Qemu Win2000 HDBench4.6.1 Acer Chromebook13 BOINC Benchmarck CF-S10 BOINC Benchmarck 0 5,000 10,000 15,000 20,000 25,000 30,000 35,000 40,000 1,301 4,062 914 2,941 12,119 35,526 6,118 8,064 floating point MIPS (Whetstone) per CPU integer MIPS (Dhrystone) per CPU Qemu WIndows2000 HDBench BOINC Bench Windows98、2000 on ARM chromebook ● You can use the x86 emulator will be like can be moved and Wine Windows apps and Steam and Skype. ● The x86 emulator also works such as Windows and NetBSD. TegraK-1 in Using Qemu Pentium2 266MHz equivalent Win98 is in HDBench, it was to use and Pentium4 1.8GHz equivalent to ExaGear-Desktop. ● In ARM Devices,Qemu is ｘ86：ARM=３：１ (proportional to the floating point?) ARM x86ARM x86 NetBSD Teokure Live Image on ARM chromebook
- 20. 20 x86 Emulation on Android ● You can operate the Windows or NetBSD by the use of Android even x86 emulation ● PC: Bochs,Qemu,DOSBox,Limbo PC emulation MAC:vMacMini ● In the case of Qemu、Windows and NetBSD, and the others operation. NetBSD Teokure Live Image(Qemu) on Nexus7 Windows9x、2000(Qemu) on Nexus7
- 21. 21 x86 Emulation on ExaGear-Desktop 1 board PC, and ARM Chromebook ● ExaGear-Desktop is 4.5 times faster than qemu. ● i686 Ubuntu12.04LTS on ARMhf Ubuntu 14.04,12.04 ● Boinc Benchmarchs:@ ARM Chromebook CB5-311 TegraK-1 Integer points (ARMhf Base) : 6118 ⇒ (i686): 1800 29.4% Flotings points (ARMhf Base) : 914 ⇒（i686): 200 21.9% about Pentium4 1.8GHz on ARM.(Qemu =Pentium2 266MHz) ● Windows applications on Wine, on ARM devices. Bonanza(Wine) on ARM Chromebookjw-cad(Wine) on ARM Chromebook
- 22. 22 Maujan(Wine) on ARM RaspberryPi2HDBench3.40(Wine) on ARM RaspberryPi2 x86 Emulation on ExaGear-Desktop ARM RaspberryPi, RaspberryPi2 ● ExaGear-Desktop RaspberryPi is 5 times faster than Qemu. ● i386 Debian7Wheezy on ARMhf Raspbian,Ubuntu14.04,Debian7 ● HDBench Benchmarchs:@ ARM Raspberry Pi2 Integer points (ExaGear i686) : ７５８６ (Qemu i386: 1999 26.4%) Flotings points (ExaGear i686) :６２２4 (Qemu i386: 384 6.2%) about MMX Pentium 200MHz on ARM. (Qemu =Pentium 40MHz?) ● Windows applications on Wine, on ARM devices.
- 23. 23 Android,iOS and JavascriptDOSBox Android DOSBox Turbo on Electronic dictionary iOS iDOS Javascript EM-DOSBox ● DOSBoxとはi386～i586エミュでWindows9xや色々なアプリが動作 DOSBox can operate ～Windows9x in the i386～i586 emulator ● DOSBoxは様々なモバイルOSに移植されて動く特徴があります。 DOSBox has been ported MobileOSs, about Android, iOS, WindowsMobile, Blackberry, PSP, Vita, 3DS and others. ● DOSBoxは独自に進化した高度なUIとドライバがあり、ゲームに最適 最近はWindows9xゲーム向けに加速的に進化しています。 DOSBox has its own evolved advanced UI and the driver, the best in the game.Recently, they are accelerating the evolution in for Windows9x game.
- 25. 25 Crouton on Chromebook● ChRomium Os Universal chrooT envirONment The author Google developers, Mr. David Schneider. ● Chroot automation tool for Ubuntu and Debian https://goo.gl/fd3zc ● To display the terminal in the "ctl + alt + t", used from the terminal to activate the "shell" sudo sh ~/Downloads/crouton -t xfce ● How to download the chroot environment by dropping the main script from github /mnt/stateful_partition/crouton/(Distribution name） Recognized debian releases: potato* woody* sarge* etch* lenny* squeeze* wheezy jessie sid Recognized kali releases: kali Recognized ubuntu releases: warty* hoary* breezy* dapper* edgy* feisty* gutsy* hardy* intrepid* jaunty* karmic* lucid* maverick* natty* oneiric* precise quantal* raring* saucy* trusty utopic* Releases marked with * are unsupported, but may work with some effort. Terminal on Chrome-browser Crouton Window Extention
- 26. 26 ChrUbuntu on Chromebook ● Dual-boot & SD USB automated installation tool for Ubuntu. The author Google developers, Mr. Jay Lee Method to accept the Linux Kernel and driver module of ChromeOS. x86 does not officially support the ARM in the corresponding. It notes that there is also not operate models. ● When you press the "ctrl + alt + → key", a mechanism to install the Ubuntu switched to CUI of the screen called Developer Console. curl -L -O http://goo.gl/9sgchs; sudo bash 9sgchs（34v87 /dev/mmcblk1） change Partition curl -L -O http://goo.gl/9sgchs; sudo bash 9sgchs ● Use switch in the "ctl + L" the ChromeOS and Ubuntu the OS when you boot How to download the chroot environment by dropping the main script from github ● Although Ubuntu is started normally, a method is somewhat time-consuming in the start-up manual switching. Reference：Chromebooks and Chrome OS
- 28. 28 OpenCocon Linux Distribution Remote control the Windows 8 and 10 on the old Pentium generations http://opencocon.org/ ● Opencocon is little GNU/Linux distribution optimized for Thin-client purpose. No desktop environment : All desktop environment from host computer No user save-able area Supported late-90′ PCs (x86 Windows 9x generation) Supported RaspberryPi (ARM) ● Development goal is: Utilize old computer with Thin-clients Running at least 32MB of memory, 150MB of Disk space Support x86 PC, PPC Macintosh, Some ARM-based hardware Easy deploy, portable, long-term use
- 29. 29 Customized 「End of Life」 ARM Devices
- 30. 30 Customized「End of Life」ARM Devices ● What do you think of that 「End of Life」 with ARM devices? 1, First End of Life: Official Support Out with Linux Distribution and Android 2, Second End of Life: Linux Kernel and libc libc is demand of linux kernel version. If it is not supported with Mainline Kernel. This devices will not supported libc and others. This distributions will be not able to upgrade. 3, Third End of Life: pkgsrc and NetBSD Pkgsrc and NetBSD is not restraint Linux Kernel.
- 31. 31 Chroot on Old ARM Linux ● Chroot to operate in the Create a new root directory under Linux environment ● Start independently different versions of OS ● It is no longer possible to access the outside of the OS from the Chroot Environment ● Chroot the Root authority only. In general user privileges Fakechroot need ● Since Kernel is a common one, driver or module class is affected by the original Kernel → Kernel unsupported features, OS can not be used Android Linux Device Ubuntu Debian And other Linux
- 32. 32 PKGSRC on「End of life」ARM Devices ● Try to use the NetBSD of packager pkgsrc even Ubuntu chromebook⇒Why？ ⇒１，I want to use the latest version of the package. I want to use Mikutter at any time the latest version ２，There is almost no ARM binary latest package in Ubuntu of PPA. One by one manually compile required from the source package. Very troublesome. 3,OS and Unix pkgsrc is independent from architecture, highly portable enough to use even Unix,Linux,Mac and Win very useful to the ARM environment ４，I do not want to mixed whether the LTS the Debian Sid Deb development version. I want to be independent latest packages. ５，If ARM Ubuntu side, I want to use the latest version to continue be Kernel support out. Strongest packager can also be used from the end manufacturers official support. Mikutter (Ruby based Twitter client)
- 33. 33 NetBSD on New and old(End of Life) ARM and others devices LUNAII@68040 and Twitter Many New ARM single board PCs NetBSD on Sega Dreamcast Zaurs and Netwalker and others https://www.facebook.com/NetBSD.jp
- 34. 34 Conclusion 1,Custmized ARM Linux OS,Applications ⇒x86 Emulator and Multi-platform app incresing. 2,Customized ARM Android and Chromebook devices ⇒Easy install Linux Distributions on Android. 3,Customized Remote desktop client on mobile PC ⇒Easy to use Thinclient on new and old PC. 4,Customized 「End of Life」 ARM devices ⇒It can be extended 「End of Life] if customized
- 35. 35 Next My Presentation OSC Nagoya、Kyoto、Taiwan MOPCON ● OSC Nagoya Kyoto、and Taiwan MOPCON my exhibition schedule ● Content:OSC Nagoya:Hacking of Android？ :Others:Hacking with ARM devices ● OSC Nagoya(Japan) 5/28 HongKong OSC 6/24-25 OSC Kyoto(Japan) 7/30 Taiwan COSCUP 8/M？ OSC Tokyo(Japan) 10/M? KOF:Kansai Open Forum(Japan) 11/? Taiwan MOPCON 10/E？ ● ・・・And Tokaido Linux Users Group