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.
203
questions
2
votes
0
answers
28
views
Identify unknown TI controller
Can anyone ID this TI chip? Looks like some sort of controller (in a older toy keyboard). there is only one other chip on the PCB (the audio amplifier). Quick googling ended on a dead end since the ...
- 228
3
votes
0
answers
69
views
Determining power supply needs for a first class, reclining airplane seat
I have a Sicma Majesty 1606 seat pair from a retired Boeing 767-300. My goal is to provide power and get them working as reasonably functional and fun home furniture for a living room. I'm documenting ...
- 31
3
votes
1
answer
84
views
Reverse engineer a blackbox function operating on single or double precision floats for emulation
I own and run a NEC VectorEngine 10C which is a PCIe accelerator running a proprietary ISA which has many fun instructions among them is VRSQRT which computes an approximation of the inverse ...
- 131
3
votes
0
answers
101
views
How can I disable watchdog in U-boot using mw command
So I have DVR with 2*Hi3511RBC CPU: ARM926EJ-Sid(wb) [41069265] revision 5 (ARMv5TEJ) and when I enter U-boot (how do I know that I'm in U-boot ? ) well over UART I get following message
U-Boot 1.1.4 (...
- 505
4
votes
0
answers
52
views
Decyphering 8kbps audio file format used in Solar Chanting Lotus
I'm trying to reverse engineer a solar powered chanting lotus flower so that I might replace the built in audio with something more interesting. The main chip (JL16B-083A - haven't been able to find ...
3
votes
0
answers
295
views
Problem getting root shell on Ezviz camera
I got a CS-C6N Ezviz camera. My friend gave it to me because he doesn't use it anymore. I was able to get rtsp stream from the camera (but laggy), and I also was able to connect to UART port on the ...
- 239
3
votes
1
answer
146
views
1
vote
1
answer
109
views
I need to get the source of my net application which is obfuscated
I need to recover the source of my net application which is obfuscated.
I formatted the PC by error and lost the information. And some ransomware obfuscated my files,
Is it possible to recover my ...
2
votes
1
answer
127
views
How to access files stored in mouse?
I own a Razer Mamba Elite mouse. After plugging it in to the usb port, an software installation window shows up. Basically it's the Razer software to manage device's options such as profiles, macros, ...
- 21
2
votes
0
answers
25
views
Is there a way to run arbitrary code on a vtech Nitro Vision?
Note: If this the wrong place to ask the question, please redirect me to the appropriate stack exchange and/or subreddit. I just figured reverse engineering is my best bet since it's kinda what I'm ...
- 21
2
votes
0
answers
52
views
Access to CPU registers in GMM space
AMD's BIOS and Kernel Developer’s Guide (BKDG) documents GMM registers and access to them:
GMMxXXXXX: GPU memory mapped registers; XXXXX specifies the hexadecimal byte address offset (this may be 2 ...
- 121
1
vote
1
answer
106
views
Need help identifying this IC
Does anybody know which IC this is? I cannot find anything for "2746 QA7A" or any combination of it. Neither do I recognise the manufacturer.
The IC is actually very small, so I cannot take ...
- 25
0
votes
0
answers
26
views
Are physical databooks of any use?
I have taken over the office of an old retired electronics guy. As a result, I have a huge shelf filled with data books: Intel, Atmel, Texas Instruments... etc. My instinct is to throw these all away ...
- 1
1
vote
0
answers
35
views
Tuning motor temperature
I have a DC motor, running in two modes, slow and fast. I will need to run the motor in FAST mode only. The motor is already running for 10 years. The motor experiences variable load.
According to the ...
- 11
3
votes
0
answers
84
views
Spy on LCD screen with Raspberry Pi
I have this digital crane scale. It has a 5 digit 7 segment LCD display. My objective is to be able to read what is displayed on the LCD display with a Raspberry Pi. This is what the PCB looks like:
...
- 31
2
votes
0
answers
122
views
Identify microcontroller (24CC MQRV819.1 1739 on P6901 V2.6 board)
I was trying to identify the following integrated circuit (marked with the codes 24CC MQRV819.1 1739).
It is mounted on the P6901 V2.6 board of a fingerprint presence recorder.
Given the function of ...
- 71
1
vote
0
answers
305
views
Getting rid of a custom Shell on a LiteOS based outdoor camera
I started reversing this camera in order to get rid of the unwanted traffic it constantly does towards Chinese servers.
I have a serial access to it thanks to an obvious UART port (bottom left in the ...
- 141
0
votes
1
answer
42
views
Unknown proprietary Micro-USB variant
While reversing a Sena Bluetooth Headset i noticed that the programming port of the internal chip is routed out to 6 additional undocumented Pins inside of the Micro-USB connector. Whats the best ...
- 228
1
vote
1
answer
89
views
ASUS RP-AC51 UART doesn't work with any common baud rate
I have an ASUS RP-AC51. It doesn't broadcast any WiFi network when powered on, the management interface cannot be accessed over Ethernet, and the reset button seemingly does nothing.
I decided to try ...
- 11
3
votes
1
answer
349
views
Brother DCP-L2550DW Identify Toner Reset TN-760 or TN-730 (Continued)
I'm really continuing discussion on a previous question posed 2 years ago ("Identifying a toner chip and its communication protocol to re-program it").
I found that user to have the most ...
- 31
3
votes
1
answer
303
views
How is lite hash rate (LHR) of Nvidia implemented?
Nvidia limited some of their GPUs with LHR to decrease the performance of Ethereum mining. What in detail is LHR doing? It seems to limit non sequential memory operations (which is actually not what ...
- 131
2
votes
0
answers
85
views
How I can interface the MCU without soldering?
My router has the following pin layout between flash memory and MCU:
The big chip is the MCU from a Sercomm H300s router.
What I want is to analyze the signaling between 2 chips using the most ...
1
vote
0
answers
50
views
I attempted to read from an Intel 87C54 microcontroller and it came up all FF's. Any way to read from this?
I'm using the popular TL866II Plus programmer to read from the chip. I see in the datasheet that it has lock bits which can disable the verify (read) function, but I'm not sure if that causes an ...
- 166
0
votes
1
answer
487
views
Windows User Identification / HWID Limiting
I've been playing a game that has an HWID limit and a bunch of other limitations, such as:
a) Cannot be ran in a VM
b) Cannot be ran using Sandboxie and other Sandbox environments
c) Limits 3 ...
- 1
0
votes
1
answer
182
views
Identify unknown Atmel chip
wondering if folks can help identify this chip.
It looks like
ATMLH017
2FCM CN
©2017AB4
Googling all manner of permutations on these numbers has not been helpful.
The chip appears next to an ...
- 103
0
votes
0
answers
46
views
is it possible to get code out of chipset through reverse engineering?
for example, encryption/decryption mechanism was inbuilt in a chip, to get the code that performs this mechanisms, is there some ways you can get this code through reverse engineering? what tools and ...
- 289
3
votes
2
answers
172
views
How should I go about reversing this USB crypto dongle?
I have some kind of authentication token device delivered by a bank (that I do not expect to use for its initially-intended purpose any more). I’d like to learn how it works and whether I can recycle ...
- 131
1
vote
0
answers
159
views
Reversing Logitech G933 Battery Charge Values
I have a Logitech G933 headset. I replaced the stock battery with a larger capacity. The headset now lasts many hours longer than it was originally designed, and the software is configured to give ...
- 11
6
votes
1
answer
1k
views
HackRF One - Replay Attack on Garage Door does not work (12 DIP switches)
TL;DR solution
Setting 4MHz sample rate and 2Mhz bandwidth in the capture tab (according to the Nyquist theorem the sample rate has to be double the bandwidth)
Using the length of a DIP switch ...
- 63
1
vote
0
answers
88
views
Reverse Engineering SNES adapter
A good "Hello world" for everybody here
I've bought a Mayflash PC052 adapter to convert an original SNES-mini controller (CLV-202) to a USB port on PC or PS4...
The thing is, this CLV-202 ...
- 11
2
votes
0
answers
62
views
Help with identifying 10pin chip
I've tried every possible combination of the markings of the chip but I can't seem to find anything on Google.
I think the chip is 96TI 35R but apart from that I can't find anything. It's like the ...
- 121
5
votes
2
answers
2k
views
How do I extract the firmware from this bluetooth speaker board?
I have a bluetooth speaker. Infinity Fuze 100.
It's a good speaker.
But it has annoying messages on startup and shutdown. And for other interface events. I'd like to either get rid of them entirely, ...
- 143
1
vote
1
answer
74
views
trying to identify this SOP14 chip
I'm trying to find out what is this chip I have two devices that have this chip in them one of them stopped working and the problem was from this chip(I know that because when I removed that same chip ...
- 191
1
vote
1
answer
119
views
Most idiot-proof method of entry to Reverse Engineer Visual/Control feed for security camera
I am looking to reverse engineer a construction security camera. I am a self-learner, and have a very general grasp on electrical engineering and coding - so I'm not entirely 'out of my element' - but ...
- 113
0
votes
0
answers
59
views
exports kernel Windows for informations on hardware
Good day! I develop small security software and use a driver like any modern security software. Can you please tell me if there are any exported functions from ntoskrnl.exe or hal.dll or other kernel ...
- 21
2
votes
1
answer
89
views
Identify a chip that's very hot on PCB
Does anyone recognize this chip by chance?
On the chip it is written:
DEYA
SB86
See picture:
I can't find anything on the web...
Any help will be appreciated!
- 21
9
votes
1
answer
3k
views
Advice on how to attack my first reverse engineering project?
Suppose you've never done reverse engineering before (apart from taking apart already-broken tape recorders). Also suppose you had a machine as pictured below, with a serial-looking and another multi-...
- 193
3
votes
1
answer
513
views
Is it possible to sniff an ATA Drive password?
Context: I have a proprietary Tandberg Data RDX QuickStor Internal USB3 drive bay for PC (item number 8666-RDX) and some storage cartridges for it.
Esentially, these are just regular TOSHIBA MK3276GSX ...
- 31
2
votes
1
answer
133
views
How devices such as smart Wi-Fi power plugs and Wi-Fi ip cameras connect to a private Wi-Fi network?
How devices such as smart Wi-Fi power plugs and Wi-Fi ip cameras connect to a private Wi-Fi network ?
The usual steps are the following :
You buy the device
You install the maker application on ...
- 121
2
votes
2
answers
227
views
Chip Identification in Push Button Toy
I have a toy that simply consists of a button which plays a variety of phrases when activated. My intention is to replace the sounds with my own. However, I have been unable to identify the chip and ...
- 121
1
vote
1
answer
119
views
Recover data from old HDD (word files mostly)
I am trying to help my mother recover some of her work from an old HDD, but I am facing multiple problems.
Firstly, I do not know the best way I could interface the old HDD with my laptop (or a newer ...
0
votes
0
answers
619
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 ...
2
votes
1
answer
697
views
Reverse UART communication protocol
I'm objective is to build a custom wifi module to be used on a Samsung AC AR24HSFSAWKN. I have such an official module SWL-B70F for which I'm trying to reverse engineer the communication with the main ...
- 141
0
votes
0
answers
311
views
Trying to edit the source code of AOC monitor
So long story short the AOC monitor comes with a G-Menu gui that lets you customize different monitor features. One specific one I am interested in is the "Dial Point" setting. Where it ...
- 1
2
votes
0
answers
149
views
What are these pads called, what can I solder to them and could I do any damage?
I am wondering what this is called (those are 1 and 2 cm marks, divided into 1 mm segments):
I'm fairly certain it's not JST. I think the two larger pads are used to hold whatever connector is ...
- 10.8k
1
vote
0
answers
29
views
Looking at a PCB is it possible to ascertain the number of layers it has?
Is there a way to ascertain - without special equipment (other than what a "layman electronics enthusiast" may have around) - how many layers a PCB has?
Is there some sort of marking or a ...
- 10.8k
2
votes
1
answer
227
views
crc - reverse engineering GAL16V8 checksum method
While working with the GAL16V8 (an old programmable logic device), I found out that the Programmers Electronic Signature (PES) of each GAL has a checksum byte
I've read the PES of some GALs but was ...
- 121
1
vote
1
answer
78
views
I have a two pin debug interface, confused on how to use it
I'm very much on the software side of things so I'm super inexperienced with debugging hardware. A custom processor I'm working with gives 2 debug pins, and given that it's an ARM system I suspect it ...
- 13
1
vote
1
answer
836
views
Wrong keyboard strokes sent to serial in putty
I am attempting to communicate to a device i have via the onboard rx/tx solder points i found on the board. I am doing this via an arduino uno.
The problem i am having is that when i connect to it ...
- 111
3
votes
1
answer
162
views
Construct a number from 0-999.9 using 5 data bytes of a MIDI SysEx message
I'm sending MIDI messages to a proprietary turntable that has an LCD screen on it. The normal software sends out updates via MIDI SysEx to display the current tempo on the LCD. The MIDI is being ...
- 33