Questions tagged [firmware]

Combination of executable code and data used to drive hardware devices and provide a first layer of software services prior to the operating system. Typical examples are BIOS, UEFI, the software running in a DSL router or a mobile phone.

119 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
1
vote
0answers
186 views

No false positive on binwalk

I have the same problem from my previous post but this time, I don't think it's the same culprit again as I have solved the problems. This time, I'm very sure I had extracted the firmware. On my ...
1
vote
0answers
468 views

Analyzing firmware image (eCos with YAFFS)

I'm trying to apply some of the practices I learn in class and online and reverse engineer the firmware of a Chinese dash camera. I've downloaded the firmware from their website (Smart dash camera: ...
1
vote
0answers
147 views

Extract files of a SquashFS Filesystem

I already asked a similar question but after a deeper analysis of the filesystem I found out that I misunderstood the problem and that's why I decided to delete the old question and make a new one. I ...
1
vote
0answers
462 views

Dumping firmware from Winbond W25Q64JVSSIQ using BusPirate

I have a Winbond W25Q64JVSSIQ flash chip that supports SPI. I've connected BusPirate through a SOP8 cable to the memory chip. PWR and VREG LEDs are on, so they're connected. BusPirate is connected to ...
1
vote
0answers
75 views

TMS320VC5416 DSP firmware reversing

I have file with DSP firmware inside. Each chunk of code or data is preceded by header with format "page,offset,length".See below full list of headers: page: 0000 offset: 0080 len: 0149 page: 0000 ...
1
vote
0answers
486 views

Decrypting the Config file of a Huawei router “HG630 V2”

followed that post from Wordpress https://hg658c.wordpress.com/2017/12/04/decrypting-configuration-files-from-other-huawei-home-gateway-routers/ Extracted the 4 Hex strings needed. But, looks ...
1
vote
0answers
85 views

How can I emulate Huawei routers HG5xx firmware?

i want to pentest some HG routers in a way that i can try every thing without worrying if it would damage the router or not .... and a better view of debugging the actions .
1
vote
0answers
18 views

Avrdude inconsistent readings

I have a problem with this dude and i don't know what to do to make him do a consistent reading or to figure out which reading is the perfect one I'm trying to read my own arduino uno which has a ...
1
vote
0answers
222 views

Find File System in Firmware

This is my first attempt at working with firmware. We have some SNMP cards that are flaky & my ultimate goal is to try to make them better. The current firmware version is 12.06.0069. When ...
1
vote
0answers
88 views

Need help : restoring a netgear dgn1000 v3 adsl modem/router

coming in from openwrt forum: https://forum.openwrt.org/t/trying-to-rescue-bricked-dgn1000-v3-need-help/36909 currently have serial console but i may have borked the u-boot looking for help on how to ...
1
vote
0answers
166 views

Decrypt ibt.sfi linux firmware(Intel Wireless 8265 Linux Bluetooth)

Why I want to decrypt: Intel 8265 Bluetooth is likely a RAMUSB device, which needs system to update firmware. I try to transplant this linux firmware to macOS. Problems I met: The macOS BT firmware ...
1
vote
0answers
90 views

Finding the function of test points on a router

I have a BCM3383 based cable router here where I ultimately want to dump the firmware. I have serial access to the broadcom bootloader and the linux console. Login for linux is unkown and telnet does ...
1
vote
0answers
130 views

How to dump firmware from R5F71424 MCU

I've read through the Renesas SH7417 family manual and I don't see how to extract the firmware. It has a limited boot mode that only allows writing to the MCU. Any pointers or ideas would be helpful....
1
vote
0answers
158 views

Attempting to RE DI-8002W Dlink Firmware. Cannot find file system

I'm attempting to reverse engineer the DI-8002W firmware from Dlink in order to search for vulnerabilities within the router. I'm at the point where I've recovered the Linux Image, but I cannot ...
1
vote
0answers
227 views

Building custom image with firmware mod kit

basically I have netis WF2409E router and i want to update it with custom image so I decided to try fmk. First I added gdbserver to usr/bin and re-packt it with fmk and upload it. After finishing ...
1
vote
0answers
319 views

What is the format of this binary file?

I have a binary file that I found on a 3D printer that is used to program a dsPIC30F5011 microcontroller. It is responsible for some basic data encryption. The only problem is, I am not sure how this ...
1
vote
0answers
449 views

Microcontroller memory dump

I have a board which has STM32F103RE microcontroller. Its datasheet can be found here. Since I have found in the internet only firmware that seems to be encrypted/compressed, I'm trying to figure out ...
1
vote
0answers
169 views

Difficulty decrypting nested PKCS #7 / AES router configuration file

I am trying to decrypt a router configuration backup file that appears to be a combination of a 128-byte header, a PKCS #7 encrypted file, and another OpenSSL salted format encrypted file. I think ...
1
vote
0answers
728 views

ZyXEL P-2812HNU-F1, replacing the U-Boot on the board

I want flash regular(non branded) firmware on ZyXEL P-2812HNU-F1 router, which have branded version of firmware (customized for local MSO provider). To do this, I should first replace the U-Boot image ...
1
vote
0answers
877 views

Trying to dump firmware from embedded flash

I have an Infineon XC161CJ-16F SoC and Micron/ST M29W320EB parallel nor flash memory that I am trying to dump the firmware from but I'm not sure how to proceed. I found JTAG pads that I soldered pins ...
1
vote
0answers
726 views

How can I find loading adress of eCos image

Hey guys Im trying to find loading address (entry point of my program) for this binary, which is part off this firmware. Im trying to load it inside of IDA, how can I correctly load it, how to find ...
1
vote
0answers
260 views

All data in IDA Pro turns into zeros when using QEMU

I'm trying to emulate a snippet of ARM assembly I have in IDA pro using QEMU. However I do not understand the output of the program. When I start debugging the firmware, windows pop up for QEMU. ...
1
vote
0answers
1k views

Decrypting Firmware File

I am by no means a hardware or software expert. But I've got a bit of a dilemma. I have on my hands an "encrypted" firmware image. I say that with air quotes because I'm not sure if it's encrypted, ...
1
vote
0answers
1k views

Modification of existing binary firmware update

I have several IP cameras from china, and I need to add some software to it. I have to ways how to burn my software into camera ROM using hardware programmer and using special binary what I upload ...
1
vote
0answers
1k views

Reverse Engineer firmware for Jffs2 filesystem in Qemu

I am looking at the firmware for my router C1000A/C1000A-D and I am having some difficulties in mounting and otherwise emulating this. From what I have read, the general process for reverse ...
1
vote
0answers
351 views

Why the extracted content differs?

I used binwalk to extract firmware.bin image, the extracted content is squashfs-root dir, and a separate dpc.squashfs file. Then I used sasquatch utility to extract content of dpc.squashfs file, and I ...
1
vote
1answer
53 views

Help with IDA pro please — functions made are not Xref'ing to the caller

I am reversing some Motorola 9s12 (68hc12) code and using IDA pro. I am having the strangest issue. The code makes a call to a function: ROM:B300 call $BFF7, #$FE when I go to ...
0
votes
0answers
21 views

Only some files are unpacked while firmware reversing with binwalk tool

I am reversing a firmware with binwalk. Unpacking was succeed, but I can't find my target files. (CGI files in www folder) When I connect to the web page of my router, I can see links include CGI ...
0
votes
0answers
14 views

Trotec Speedy 300 - Laser Run Length Encoding

I am trying to reverse engineering the Run Length Encoding that the Trotec Laser uses to engrave bitmap images. Does the following encoding correspond to a known schem? Each line is form a different ...
0
votes
0answers
50 views

Stuck attempting to reverse Denon AVR encrypted update

I am trying to RE the update file for a Denon AVR for fun and to see if I can figure out how to access the device's webserver which otherwise returns HTTP 403, and how to enable Pandora on my EU ...
0
votes
0answers
39 views

Nokia 105(TA-1114) Firmware analysis using Binwalk

First please forgive me if a make any mistake. i am not a primarily English speaker but I will try my best. Few days ago i started to tinkering with Nokia feature phone Nokia 105(TA-1114). I get a ...
0
votes
0answers
67 views

Help to find the main menu apps in Nokia firmware

I am trying to custom Nokia 215 4G firmware I want to remove specific apps like games, radio, browser... If not removing it, redirecting it OR even damage it. So when you click on an app it will open ...
0
votes
0answers
51 views

Understanding operation of ALU in SAF80-C509

Good day. I'm reversing an automotive ECU firmware which works on SAF80-C509 processor (Intel 51 architecture). Now, I've got this part of code: code:64C5 mov MD0, R0 ; ...
0
votes
0answers
43 views

Questions about reverse engineering of a bootloader

I'm learning reversing, practicing with a old router(Huawei HG532s) I extracted the router's flash content with a script of this post https://wikidevi.wi-cat.ru/Huawei_HG532s 1 I have used binwalk to ...
0
votes
0answers
59 views

Help in extracting .bin firmware file of TV

I need help in extracting the .bin firmware of a tv (Sony W650A it is based on android) the firmware file is: Here I ran binwalk on it and here is the result: DECIMAL HEXADECIMAL DESCRIPTION ...
0
votes
0answers
38 views

QEMU & Firmware inside Docker

I am currently trying to run a router firmware via qemu inside a docker container. I'm using multiarch/qemu-user-static:x86_64-mips. Here is my Dockerfile: FROM multiarch/qemu-user-static:x86_64-mips ...
0
votes
0answers
53 views

Router firmware research

So I got a new tp-link router (Archer vr600) and downloaded the firmware version I'm running from the site (V2 firmware version 170504) in order to search for vulnerabilites. After some research I got ...
0
votes
0answers
26 views

HexRay API - Programatically rebaseing program on firmware

I am working on several firmwares (mostly ARM and PPC) that have no structure that IDA can decipher and so far I have been guessing BASE address until the functions and strings align with what I see ...
0
votes
0answers
145 views

How to flash Devolo Device (AR9331 MIPS) using U-Boot TFTP and .dev firmware file

after a regular firmware update using devolo-cockpit software, my Devolo dLAN 500 Wifi is bricked. The boot-loader still works and tries to download a firmware using tftp to flash it. This works but I ...
0
votes
1answer
73 views

How can I find a value in Tricore(TC1766) Arch?

I recently work on Tricore Processor, but I have some problems. With reading memory value. I do not know if I am right or not, but I think a part of flash memory copied to RAM and now in my algorithm ...
0
votes
0answers
48 views

What are the open source symbolic execution tools for Firmware?

I have tried to use angr, KLEE, S2E to symbolically analyze firmware binaries such as DIR-815(httpd ELF binary). import claripy import angr p = angr.Project('./httpd', load_options={'auto_load_libs':...
0
votes
0answers
76 views

binwalk not showing file descriptions (signatures) after 1st try

I have a bin file that shows a list of lzma compressed files which I extracted generically to .7z files using this format "binwalk -D "elf 32-bit lsb shared object":.so image.bin" ...
0
votes
0answers
171 views

Extracting a firmware image via U-Boot and mounting/expanding it

I'm attempting to extract the file system from an embedded Hi3518 SoC that runs Linux (Busybox) but has a U-Boot boot loader. There is no console once the device is fully booted, so it seems that the ...
0
votes
0answers
182 views

Binwalk on flash dump yielding useless files and empty file systems

I have been investigating some routers by desoldering their nand flash and dumping them using a flash programmer. However when I use binwalk on these dumps I end up with fragments of files mixed in ...
0
votes
0answers
287 views

Reverse engineering TP-Link TD-W8961N V3

I'm trying to reverse engineering the router's TP-Link TD-W8961N V3 firmware. After following the same question here i used the script zynos.py for unpacking the firmware and i got some files -rw-r--r-...
0
votes
0answers
77 views

firmware reversing zlib file

I get a firmware https://www.zyxel.com/us/en/support/DownloadLandingSR.shtml?c=us&l=en&kbid=M-02811&md=GS1200-5#searchZyxelTab4 I would like to look at the filesystem, but i don't figure ...
0
votes
0answers
36 views

WiFi router flash layout - brick?

I'm working on to get openwrt to this Linksys e3200 router. Stock and wrt firmware did flash ok through web interface. In the progress of testing different openwrt builds I happen to brick it. I have ...
0
votes
1answer
207 views

Need help opening a .img file from a camera firmware (trying to get out of the Meari/Zumimall/PPstrong cloud!)

I've got a cloud-based battery powered camera which I'm really hoping to get out of the cloud with, in order to enable RTSP or ONVIF (or something local!). I've managed to get a .bin file. Binwalk ...
0
votes
0answers
67 views

Firmware reversing IP camera

I'm fairly new to reversing and was tasked to reverse a IP camera to find its authentication web CGI. stuck on reversing BFLT executable and not sure where to look for the authentication, found the ...
0
votes
0answers
37 views

C166 Memory and Addressing mode

Here I think I have some wrong in base concepts, In the code shown below as you have seen, r4 is input argument for sub_37C2 where r4 is r0 + 6. And probably this function return r4 and r5. So, we ...