Questions tagged [encodings]

A mapping of a given code to values or semantics. Guessing the meaning of an encoding requires a lot of trials but some encoding are standard and can be guessed quite easily.

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Reverse engineering an hydrometer's Bluetooth communication

This is a very specific question. I'm currently working on a project to create an android application capable of reading the values of an hydrometer via Bluetooth. By reading the datasheet, I suspect ...
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127 views

Recognize this encoding (in a serialization context)?

I am currently trying to reverse engineer a proprietary serialization format. In some of the sections the encoding is unknown to me. What I was able to figure out: 1 byte 0b00?????? "6bit signed int" ...
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856 views

Radio Signal 433.92MHz ASK OOK modulation, encoding?

Considering a key fob for RKE (remote keyless entry, automotive) its signal has been captured: It sends at 433,92MHz simple on/off. Following I regard the deltas (time differences between on-off or ...
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Finding the h.264 stream in a bytestream

I have a bytestream that contains h.264 bytestream packets in it. How can I find it? Output from stream: https://mega.co.nz/#!3llAnLaQ!pc1JPDpDOP6948F2x44LqeYm-p5CDnb91Da334rt4fY The first 13 bytes ...
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How to retrieve the encryption key from a dll file?

I have a dll file that makes an http post request to a webserver , request looks something like this : UmdUsFrEB3wGMuuAz1Znywuedx6+...
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96 views

Decode bitmaps from Director .dxr files

I'm trying to extract bitmaps from an old Macromedia Director protected .dxr file. I was able to find some information about the file structure from here (it turns out to be a XFIR container, the ...
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476 views

Is there any way to change the encoding of an exe file?

I have an exe file and it will browse the xml, or txt files to display this exe file. And the characters only display the exact language of that country when I switch the language of the computer to ...
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142 views

CD-ROM CIRC encoder

I'm studying the principles of data storage CD-ROM At the moment I understand structures of sectors, F1 frames, F3 frames, subcode channels. But I just can not understand the principle of forming F2 ...
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239 views

Decrypting/Decoding encrypted/encoded data

I'm trying to increase the interoperability of some database software. The database can write and read "stored SQL queries". I wanted to figure out the format of these SQL queries so I can build them ...
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1k views

Converting Duden dictionaries for Stardict/Goldendict

I’ve a bunch of first-class German dictionaries by Duden (the main German dictionary publisher) which, sadly, use a closed proprietary data format and their dedicated Duden-Bibliothek application (...
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180 views

Name for simple character encoding (where '0' is 0x00; 'A' is 0x0A)?

Some old games have a very simple text encoding in which: 0x00 = '0' 0x01 = '1' ... 0x09 = '9' 0x0A = 'A' 0x0B = 'B' 0x0C = 'C' ... 0x22 = 'Y' 0x23 = 'Z' ... 0xFF = string terminator I figure this ...
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Decoding serialization of raw data

I'm trying to decode some IR data. I have some basic information about this data, but I don't know how to decode it. Though this is technically an IR/Android related problem, I think I can generify it ...
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22 views

How would you approach solving the algorithm if you have samples of input to output?

There is a page that lists integers. All these integer inputs have corresponding alphanumeric outputs that form a url where I have some desired information. The algorithm is a black box to me. I can ...
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1answer
28 views

The Logic Of Incremental Data on Serial Communication Encoding

These are the serial communication reverse values. I am trying to understand the logic behind this. I am pretty sure that 2 bytes represent 1 byte(high byte and low byte), values are correct. I tried ...
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226 views

Decoding messages sent/received by Python websocket client

I am using the websocket module for my client in python3, and I am trying to troubleshoot some errors I am getting that lead to the client disconnecting after seemingly random intervals. When I ...
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47 views

Looking for encoding of SVG data

I have some SVG images stored in a database; but I am not able to find out which encoding is used. Unfortunately, I don't have the exact SVG plain text available. The given examples "probably&...
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84 views

What kind of integer obfuscation is this?

I'm looking at the network traffic of a game submitting the user's score to the high-score server. The score value seems to be obfuscated in some way. The score is a non-negative integer, and not more ...
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35 views

What is the URL format for Google Trends?

When you search for the search term Tesla or AOL you get the following URLs: https://trends.google.com/trends/explore?geo=US&q=Tesla But, for the automobile maker, you get: https://trends.google....
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140 views

Reverse Engineering a Vehicle Identification Number (VIN) encoding

Not sure if this is the right place so please point me to the right place if needed. I have an input of a VIN (Vehicle Identification Number) number with 17 characters, each character is either an ...
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1answer
2k views

Trying to decode the Ontario Driver's License #

**The Ontario Driver's License follows the below format:** LXxxx-FFFMY-YMMDD Where: L is the first letter of your last name X is a numeric encoding of the last name (See Chart 1 below) xxx is a ...