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关于固件firmware 评分

一份关于固件firmware的说明以及固件安全研究的demo文档
WHY Provide new features Unlock hidden functionality Find vulnerabilities Use for the malicious purpose 201101 SoNY"PS Jailbreak Geohot -release free jailbreak for v3.55 firmware Bypass SONY's security check with USB dongle Execute unsigned code 2011.09 CANON DSLR firmware hacking Magic Latern -release a custom firmware add-on(modified firmware) Photo and video enthusiasts WHY 2009. 10 Samung TV firmware hacking Samy Go-reverse engineering project for Samsung TV Firmware Unlocked the ability to use non-Samsung WiFi dongles Improved playback from USB devices Implemented NFS and SaMBa for sharing file over the network 2011.11 HP LaserJet Printer Vulnerability Researchers from columbia universit Not check digital signatures before installing a firmware update Accept arbitrarily modified firmware Erase its existing os and overwrite with a malicious one WHY 2012 SECUINSIDE Wireless Router Hacking IPTIME G104-CGi Buffer Overflow Vulnerability ANYGATE-Execute Command with non-authentication 2012 VB2012 ADSL Modem Hacking Fabio assolini, Kaspersky ADSL Router CT-5367-CSRF, UPNP/SNMP misconfiguration 2012 DEFCON Rooting soHo Router Zachary cutlip, Tactical Network Solutions Netgear WNDR3700v3- SQL Injection to MIPS Overflows Adventures in router rootkits Michael Coppola, VSR Netgear. Belkin, TRENDnet-Owning the network WHY Wireless router Firmware Tools Collection Info Open Wrt rpef ireless freedom Router Post-Exploitation Framework 圆■■■■■■■■■II! dd-wrt Router exploitation framework Com UWfirmforce Automated firmware reverse-engineering tool RoU littleblackbox P Database of private SSu/SSH keys for embedded devices h binwalk P Vmware /DEV/TTYSO Embedded Device Hacking firmware-mod-kit s ht allows for easy deconstruction and recon sutrction of firmware images for HOW Firmware Hacking Process Exploitation Extract Recon Firm items Find intere Debugging 8 ware Image From Imag sting files Reversing Repackaging myfirm# binwalk, signsrch, offzip, trid myfirm# file, strings, hexdump, objdump myfirm# dd myfirmt firmware mod kit myfirm# IDA, gemu, gdb myfirm# extract tools, deflate tools HOW Firmware(Image) Structure Firmware image Boot File Kernel Others Loader System HOW Firmware(Image)-BootLoader Boot File Kerne Others Loader System The first code that is executed every time a system reset Initialize hardware and load the correct image from flash Execute the Kernel Placed in a part of flash or a separate EEProM For embedded devices Das U-Boot redBoot CFE Adam2 PSPBoot NetBoot(DWL7100AP) xWorks'own bootloader(Netgear WGT624) ThreadX(D-Link) HOW BootLoader(ex)U-Boot Das u-Boot -Universal bootloader PowerPC, ARM, MIPS systems mostly used to load and boot a kernel image U-Boot Image =<U-Boot Header> <Kernel Image> http://www.denx.de/wiki/u-boot http:/sourceforge.net/project/u-boot f define IH MAGIC 0x27051956 / Image Magic Number 开 define IH emlen 32 /* Image Name Length Image create: mkimage typedef struct image header uint32 t ih magic / Image Header Magic Number uint32t ih hcrc: / Image Header CRC Checksum 11 32t⊥ h time; /* Image Creation Timestamp 1in七32t ih工ze *工 mage Data size uint32 t ih load /* Data L。 ad Address uint32 t epi / Entry Point Address uint32 t ih dcrc: /* Image Data CRC Checksum tg t Operating system uint8七 ⊥h /+ cpU architecture uint8 t ih type i /*工 mage Type in七8t /* Compressio T n fype nta t ih name[工日 NMLEN] 工 mage Name mage hea

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