Questions tagged [file-format]
File format refers to the way information and data is encoded and stored in a computer file.
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What Are These Four Bytes In My File Doing
I have a file that I'm trying to reverse engineer that is generated by an application. The file itself is fairly simple, but there are 4 bytes whose purpose I can't determine. The file consists of a ...
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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 ...
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How do I reverse engineer a file uploading api?
The API is pretty old and is written in C#, I tried debugging the API calls with mitmproxy.
This is the successful API call (manually uploading file)
but when I tried curling it, it gave me this error ...
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Compression algorithm from very old tape backup?
I'm recovering data from old tape cartridges from circa 1994, where the user had forgotten what software was used to write them, and it doesn't seem to be any format I recognize. Fortunately the file ...
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Decoding a list of integer values in unknown format
I'm attempting to reverse engineer a binary file format which is used to encode a list of integer values. I can't work out how this format works, as the number of bytes used to encode each value ...
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How to decode this rbf file?
I am trying to decode this file but so far I have no luck. I tried with binwalk and other decoders but still did not see a way of decoding. Any help, more than welcome. The file supposed to have GPS ...
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PDF file have two trailers?
If I analyse multiple PDF files with a hex editor, I see that all of them have two trailers.
That's possible if an object has changed or renewed (https://blog.idrsolutions.com/multiple-trailers-in-a-...
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Extracting contents of unknown file format
I would love some help on working with this file format.
I have this archived file from this abandonware game that I like to mess around with, and I have tried all sorts to try and expand it to ...
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LZ4N file format - file decoding
I'm trying to decode a file that is part of device firmware. Unfortunately it comes RIFF<...>WAV format wrapped / packed with strange LZ4-like format.
Non of linux available lz4 tools do ...
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Is it possible to recover/acquire schema of FlatBuffers binary file
Without having access to the schema file, is it possible to recover the schema of a binary FlatBuffers file by examining the file? Also, some of those files contain encrypted scalars. If you can ...
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Reverse-engineering the Sony Camset (Camera Settings) file format
Context
Newer Sony cameras have functionality that allows them to:
save the current camera settings (shooting mode, auto-focus mode, etc.) to a file
load the camera settings from a file into the ...
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Decrypting .toc file
So I have a few files from a game on my pc, most of which are .toc files
I believe this means they are a "table of contents" as the ending suggests, but my attempts to read them have been ...
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Reverse-engineering the S-Note (.spd) file format?
Context
Samsung phones have an application called 'S Note' that let you use the stylus/keyboard to take notes in a free-form format, similar to Microsoft OneNote. These notes are stored in files ...
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How do I read/edit a .xuk file extension?
I am trying to reverse engineer a license key for some software, the company that made it went out of business. In doing so, if you didn't already have the key their $50,000 machines become ...
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What kind of compressing/encoding is this?
Currently, I am trying to understand .amxd file formats. I firstly tried to open it in VIM to see what this contains. Turns out there is a JSON file and others files also in the file (I can see PNG ...
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Floating point number mangled in a proprietary file
I'm reverse engineering a proprietary file format that contains a set of points to construct a curve (FL Studio's .fnv format). What i have trouble with in particular is how the Y-coordinates are ...
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Figuring out WhatsApp's receipt info storage format
I am trying to figure out and document the structure of WhatsApp's database (iOS version). Most data is easily readable, but the table ZWAMESSAGEINFO has a BLOB-column ZRECEIPTINFO. I am guessing this ...
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Making sense of an encoded JSON string
I extracted a game file, which is in JSON format, it's a bit too long, so I'll omit parts of it:
{name: "\xEE\xB5k~u\u03D7\x80\xF8\xE0\xE2\xC5\xCA\xEE\u04CF\x90\xBE\xD8Cs\xFE\xA5Ec\u007F\u0006\...
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How to determine file system or open unknown .img file
I have a .img file which will not mount, open, extract or anything within Windows using either the tools built into Windows 10, WinRAR or 7-Zip, they all return errors.
I'm trying to look at data ...
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Deciphering the format of an unknown file
I am attempting to discover the exact format/encoding of a file. These files stem from closed-source analysis software we use on a daily basis. I would like to obtain the format in order to create an ...
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What is .pb file format?
TL;DR: What file format is this (if it's not a private file format) and how do I parse it?
Before I say anything, I want to say that I am new to reverse engineering and StackExchange.
I am trying to ...
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determine proprietary 16-bit floating-point format
Background / Introducion
CAN message Mercedes-Benz, cannot determine 16-bit data type for temperature.
7E 00 32 01 37 00
According to @rnd-ash (who has reverse engineered ACTIA Basic XS Monitor ...
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Proprietary 3D Format Reverse Engineering: What Could These Numbers And Matrices Represent?
I'm trying to reverse engineer a model format from an older Russian game (Pathologic) with limited success. It is a proprietary model format not recognized by any converters/editing tools (believe me, ...
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Issue in opening a file type after unzipping
I downloaded a file from this link https://storage.cloud.google.com/gresearch/smallcnnzoo-dataset/cifar10.tar.xz, and I successfully downloaded the archive file.I unzipped it using 7-Zip. After ...
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Reverse engineering Roland TR-8S kit file format .t8k
I'm trying to figure out the file format that the Roland TR-8S drum machine uses for importing/exporting drum kits. My goal is to replace the sample (PCM) data within a kit. It's a proprietary binary ...
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Open unknown image format (probably a RAW image)
I copy image files here from a linux based system which ends with .bin.
Unfortunately I don't know how to open it. The goal is to convert images to this format later.
What I have already tried:
Open ...
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reversing an HDL file [closed]
I was given an HDL file with the following content:
i was asked to reverse it and retrieve the value of in , how can i do it please knowing that i have the value of out? thanks
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Cannot find audio file type
I'm trying to find the audio file type of this file (extension wtj) around 8 minutes). I extracted it from a music box.
I've tried many things:
Open in Winamp and VLC => no luck
Open with ...
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What type of file has the file signature 'BOOT'?
I have a .bin file which I am trying to disassemble into something that I can edit. Given that binary files can contain just about any binary data, I found it difficult to assess what file data is ...
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how do i use the text like in pe files?
I extracted pe file from another pe file and I saved it.
I want it execute but when I saved file computer sees it like text file. Altough my actual file starting with "4d 5a" computer sees ...
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Reverse engineering a .byte file format
I've dug into files of a game that was made in Unity (which uses C# language)... and i was interested in extracting 3D models and textures etc. I understand that data and obb are separate, BUT! In my ...
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Need help learning to extract and modify PS1 ISO files
I was wanting to make a randomizer for a playstation game, Parasite Eve 2.
I've spent a ton of time trying to figure this out just googling around and eventually wound up here.
Does anyone have an ...
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Detecting and reading embedded filesystems on desktop Linux
I have some data from a NAND chip, dumped using the built in nanddump utility on the embedded device.
This is the device information: https://openwrt.org/toh/bt/homehub_v5a The NAND chip is 128MiB ...
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Opening an undocumented 90s graphics format
I've managed to extract some graphics files from an archive of an old game. Haven't found anything about it online, so I'm trying my luck here, prehaps someone knows a similar format that can help me. ...
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Reverse engineer compressed iOS app file
I want to find out the compression method used by an iOS app used for music notation to store its files. The files of its OSX counterpart are zipped files. You cannot create files in the iOS app, but ...
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Extracting the contents of an unknown file format
I need some help and advice here. I'm self-learning how to reverse engineer a file content of an unknown format.
Here's the content of two files:
E5 44 2A F9 1C 72 96 B9 CA B2 40 33 DA 19 B9 56 C4 5F ...
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I'm trying to decode this file that supposed to encode an imaged obtained by a laser system
This file suppose to have an image obtained from a Laser system. Since it needs a propietary software for the decoder I have been slowed in order to get the data. I wonder if you guys know any way of ...
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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 ...
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Reverse engineering a partially known binary format
I have files with binary data, the format description of them is very vague and incomplete. E.g., it states that records start with header byte, like (hex) FA, followed by datetime (accurate down to ...
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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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How would I start to decode this? Asking for help from a friend (Alien Hominid Invasion)
I have literally no idea how to start to decode this kind of a file, but I really want these fonts and a decoder would be huge for the community, so any help would be great. Linked below is a google ...
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How are strokes stored in the Goodnotes file format?
I have been trying to reverse engineer the .goodnotes file format (a note taking app for iOS devices) and so far have discovered this:
A .goodnotes file is simply a zip archive, an example file ...
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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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Reverse engineer a proprietary audio file
This is my first time posting here and also my first time attempting to do reverse engineering of this kind.
Let´s get to the point:
I have to find a way of reading some phone call audio files. The ...
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Algorithm for decoding database like file structure
I am working on an automatic decode tool for a database like file structure. The file consists of a header and a body. Information that is known before trying to decode the file: Number of rows and ...
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Identifying the nature and contents of a file
As a preface, I do not have any experience in reverse engineering. I am an application developer, so this field is way out of my area of expertise. My end goal is to create a web page out of this ...
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What image format is this?
I am trying to reverse engineer an image file generated by my microscope. It is supposed to be an HDR image. The file has very distinct pattern in HEX editor but I am unable to recognise it:
First 16 ...
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Why doesn't binwalk see the filesystems in this Eufy Home Base 2 flash dump?
This teardown:
https://electronics-teardowns.blogspot.com/2020/07/eufy-homebase2-teardown.html
Gives a flash dump for the Eufy Home Base 2 here: https://anonymousfiles.io/Ve9y3cL4/
With this partition ...
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Reverse Engineer Unknown File Format
I have thousands of old backup files from EaseUs Todo Backup. They are incremental backups saved inside a ".pbd" file (EaseUs's proprietary backup format). I've tried to get my files out ...
