Questions tagged [hardware]

Any physical device analyzed for reverse engineering purpose. This tag is used to denote that the question is about hardware reverse engineering and not (only) about software reverse engineering.

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1answer
157 views

How to set hardware breakpoint by value?

I want to set in IDA breakpoint when a specific value is written on the stack. I know how to set hardware breakpoint, but I can set it only by address.
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Reverse engineering Nord Lead 4 control board

I am reverse engineering a synthesizer named nord lead 4. I want to tap in between the control board and mainboard which has the microprocessor. I didn't start analyzing the signals on the board ...
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1answer
119 views

I have an old Macbook A1342 that broke. Is there any way I could repurpose the LCD and give it some sort of video input?

My Macbook A1342 broke and before I throw it away I want to try and salvage the screen. I don't have much knowledge of hardware (aside from building PCs, most of my skills exist at the software level) ...
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75 views

Identifying unknown chip - markings erased

There seems to be a (relatively) easy way to remove the markings on a chip via laser. When reverse engineering a device with such a chip, what would be some methods of identifying it. It seems that ...
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1answer
355 views

JTAG protection bypass

When protecting a device from being accessed via JTAG there are a number of ways to do it. The two that come immediately to mind are: a 'fuse' that is blown; a JTAG 'password'. What are some ...
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1answer
870 views

How to identify SWD (Serial Wire Debug) pinout?

When trying to access firmware, JTAG and SWD can be really helpful to the reverse engineer. When looking at an unknown board/device tools such as JTAGEnum or JTAGulator are really helpful in ...
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1answer
730 views

Finding JTAG/UART Connections

I need help identifying the UART or JTAG connections on this board. I would like to dump the firmware using a pirate bus.
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1answer
44 views

Assuming you know everything about a hardware platform, can you reverse the BLOB that is required for its operation? [closed]

I do not understand, if you know everything there is to be known about your hardware, can't you work your way up and find out what the binary does exactly?
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2answers
470 views

Trying to identify the JTAG/RS232 port on this board

I am doing some research into smart devices. I realized that the device is communicating with an Internet end-point but the communication is encrypted (and using a proxy tool doesn't work). I want ...
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2answers
2k views

Are there any project based books that teach reverse engineering?

I want to learn to reverse engineer hardware/firmware as well as software (eventually, i want to focus on hardware/firmware now). I have some experience programming STM32 microcontrollers as well as ...
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0answers
305 views

Trouble finding the right Checksum algorithm

After reading a lot of posts here and their solutions, Punching lines in CRC calculators for several days now. I can't seem to find on which Checksum this code is based. Background This is a data ...
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1answer
322 views

NFC Tag reverse engineering failed by a non-responding tag

I was curious about a system using NFC and I tried to find out what was the protocol. But after digging few days around, I have the card detected by my reader (acr122u) but that's all I get. I can't ...
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1answer
162 views

Reverse Engineering A Tely 200 Camera

I recently got a hold of some free hardware from a company called Telylabs who had recently gone out of business. I got a Tely 200 which is an IP camera that's used for online conferences and ...
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4answers
3k views

Knowledge about CPU hardware

Recently, I have taken the computer organization course that explains in the logic gate level how a CPU works and etc... Up until now I have been treating the CPU as a black box that runs assembly ...
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91 views

MSP430 JTAG FUSE

I'm using MSP430 micro controller which support physical fuse for jtag. The problem is I have blown the physical fuse so I can't interact with the controller, is there any way that I can interact with ...
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214 views

How to perform manual flashing of a bricked device?

I bought a broken Zoom H4n audio recorder, expecting an easy repair. What I got is a little bit over my head. It isn't booting (beyond a certain point) and I can't enter the firmware update tool. I ...
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97 views

Trying to read/write an Renesas's M30626FHPGP flash memory

I need to make a little introduction: I'm a 37 years old man who is affected by multiple sclerosis. My neurologist gave me Rebif 44 (44mg) as a treatment. I started at full dose and went on for, ...
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104 views

DSi Data Recovery Process?

I have been asked to recover data from a Nintendo DSi device that has some critical pictures and audio on it. After looking closely at the system, it appears that the memory must be integraded onto ...
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1answer
499 views

Dump firmware from MC9S08EL32 MCU

I have a datasheet of the HCS08 micro-controller family from NXP. I have a Raspberry Pi and some time. I admit that this is my first time delving this deep into hardware RE, so be gentle with me. I ...
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1answer
100 views

Dump Sequence Data from Casio electronic keyboard

I’m not quite sure whether this is the right website to post this on but... I want to try and dump sequence data from a Casio Keyboard default soundbank I believe it’s stored on a ROM chip of some ...
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1k views

Reverse engineering unknown RS232/UART binary protocol

Background story For couple of days I'm trying to crack the protocol used the old medical device, in order to collect data for a research in an automated way. The device in question is Novametrix ...
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3answers
727 views

OBD II scanner reverse engineering

Newbie here. I'm working on an OBD II scanner and have made a hardware using STM32. It uses its inbuilt peripherals to communicate with the OBD bus (like CAN, K-Line, etc). Question: Are there any ...
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1answer
366 views

How can I determine if NAND blocks are good blocks?

I'm trying to rescue some data from our hardware. On the board I have a pair of Samsung k9f4g08u0d NAND chips. Each chip has been dumped to include every block, including the spare areas. If I invert ...
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1answer
635 views

Finding base address U-boot Android image from /dev/block/mmcblk0boot0

Currently I am stuck finding the base address for IDA to disassemble the boot image correctly. The img file is coming from /dev/block/mmcblk0boot0 (mcc_utils is executing: cat bootarea.img > dev/...
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1answer
528 views

How to identify unknown chip

I'm trying to play with the internals of a toy and the controller for that toy uses a chip that I have been unable to find any information on. The chip in question is this: The company is clearly ...
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2answers
1k views

Flashing firmware on an embedded device

Anyone want to help out a noob? (excuse my incorrect terminology/ knowledge) I am venturing into unknown territory. The only experience I have is rooting/flashing firmware on my phone and installing ...
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3answers
780 views

The Nokia CA-50 cable has a longer USB port. Does it hide any kind of chip?

Here's the attached image: (source: gsmsolutions.ie) The CA-50 was used by Nokia to program newer phones. Nokia phones from around 2008-2011 feature this port for flashing. I noticed the USB side is ...
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1answer
1k views

How to reverse engineer hex data on EEprom? [closed]

I am learning how to reverse engineer the EEprom data in Automotive ECUs. For such purposes as to disable the immobilisers, find millage data and workout encoded VIN numbers among other things. I ...
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1answer
258 views

How to make Freescale imx233 mp3 player boot with identical type player firmware.sb?

Goal: 1 - To load a older version of the firmware on the device because it has features the newer version does not. 2 - To set the player up as a multi-boot (U-boot). key press for original OS or my ...
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1answer
158 views

reverse engineering of electronics of father.io game [closed]

Father.io game has recently become a famous AR FPS game. I want to know the concept of this game electronics design and ideas? I'm planning with some friends of me to make a shooting game like Father....
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108 views

Patch is detected yet hardware access breakpoint isn't hit

I wonder how is that possible. I found debugger detection in TLS Callback function - there is conditional jump after some check. When I step over it with debugger and modify ZF flag to bypass ...
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2answers
447 views

Thought I found serial port - broke embedded device instead! Help?

Well another weekend has gone by and my tinkering has caused another device to (potentially) bite the dust. I've been playing around with a couple of Slingboxes, an M1 and a 500. Today was the M1. I ...
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2answers
3k views

reverse engineering a printer cartridge chip

Is this stack only about reverse-engineering software and firmware? What about hardware? We have a few semi-industrial ink-jet printers (like $2,000 each so, whatever tier that means to you). It has ...
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1answer
614 views

What is the encoding of some old arcade chips?

So I got a couple super old chips from what looked like an arcade. The game-board they game with is OK I think. The CRT monitor is wrecked, however the chips are still good. I stuck them in my Chip ...
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0answers
325 views

Discovering byte array obfuscation function

I'm in the middle of reverse engineering SafeNet (formerly Rainbow) iKey 1000 USB dongle protocol, in order to create Linux driver for it. I'm using Windows as guest in virtual machine on Linux host ...
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2answers
1k views

Router's serial port only outputs garbage

I'm trying to reverse engineer a 2Wire ADSL modem/router, mainly for practice. I opened it and found a serial port (with a header conveniently already in place) but I'm not getting any useful data out ...
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1answer
48 views

Why do Mobile Credit Card Devices use the TRRS connection instead of the Micro USB?

I didn't know where to ask this; I hope it's in the proper place. My wife just bought one of these mobile credit card processing devices for her phone and I was curious as to why these devices use ...
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1answer
698 views

Best 3G USB Modem for Reverse Engineering?

My idea is to automate the process of keeping in touch with my server in a portable and internet independent manner. The most optimal solution in my case is an SMS Gateway/Relay because I travel a lot ...
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1answer
2k views

Question about Keeloq - A car remote control standard

I have a question about Keeloq security. I have an original car remote controller (BFT Mitto 2) and I know this chip uses HCS301 with Keeloq implementation. I would like to clone this remote for my ...
2
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1answer
498 views

Reverse engineering car stereo panel

I'd like to reverse engineer a car stereo front removable panel. It's a leftover from a broken car stereo. I'd like to do so by connecting the panel's 14 connections to Raspberry Pi 2 model B's GPIO ...
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0answers
291 views

What optics are used in Microsoft HoloLens?

How does Microsoft project an image so close to the eye yet understandable by the brain? How is the display transparent? This link has good information but is speculative. https://www.reddit.com/r/...
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1answer
685 views

Reverse engineer intercom connection (22pin internal connector)

I have a Urmet Signo 1740/40 intercom device in my apartment, and I've been brooding on a way to replicate (some of) its functionality from a different device (such as a Raspberry Pi) so that I can ...
3
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1answer
247 views

Chip obscuring epoxy removal for chip identification?

I have a chip on a DJI Phantom 3 Advanced controller/remote. It is the RF communications chip, which I believe to be some sort of Analog Devices wireless networking chip, but I'm not sure exactly ...
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2answers
253 views

I need advice on how to JTag a Microsoft Band

I am studying Computer Forensics in at a university in the UK and for my final year project, I wanted to combine my love of Microsoft products and Computer Forensics to see what kind of information a ...
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2answers
597 views

How to get x and y position from joystick?

I have VR2 Joystick and I want to hack it. What I think is that, to determine analog voltage of joystick outpin and to mimic this values in Arduino with AnalogWrite function. I tried measure analog ...
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1answer
668 views

Is it possible to run a flash memory dump from a production device inside of an emulator/simulator?

I am not sure if this is the right forum, or if it would be better suited in a different SE sub, though I figure this is an appropriate place for it. I am wondering if there are any emulators that ...
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0answers
93 views

“Sound Box” Custom Message

I am trying to put a custom message on a "sound box" in a stuffed animal. Here is a picture of the circuit board: The blue wires lead are connected to the speaker. I am thinking that those pads ...
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1answer
201 views

How can I detect what's calling an .exe when pressing a keyboard button? (and hook it)

On my keyboard, there's a button that opens Windows 7 calculator when pressed. How would you capture what's calling/opening it? Because it's a Logitech keyboard, common sense would say it's via ...
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1answer
130 views

Reverse Engineering an iBaby M6

The iBaby M6 is a pretty cool baby monitoring system with neat features. It has Android and iPhone apps but unfortunately, there's no PC interface. I was thinking that if the camera was broadcasting ...
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1answer
988 views

How was the Zero Flag implemented on Z80 ALU?

Z80 was a popular 8-bit processor with a 4-bit ALU. Implementing a zero flag for a register should be straight forward, it would be a logical NOR of all the bits on the register. Something like that ...