How to decrypt the Obfuscated J2me file? (For reverse engineering) - mobile

Im looking into decrypt the jar files. (Obfuscated j2me/jar file).
using decompier, im not able to get the exact files & folders, b'caz of obfuscation.
is thr any possibilities to break the obfuscated jar file?
Please, im expecting your' valuable replies..
Advance Thanks to all.
By & bye from Munna

No. The renaming of files (and variables, etc) during obfuscation is a one-way operation. There are tools that can assist you, but if you want them to have better names you'll have to figure them out yourself really.

Related

What's this compression method?

I want to modify a file in this package, but I can't compress it with the same method that was used before (on another PC). Anyone can give me a piece of advice how to compress it and with which software? For example I want to edit the scripts\alienware_light_fx.xml file and then compress the whole package again.
P.S. Sorry for my bad english! :(
That is a zip file. Any zip utility can create or modify it. You don't need to recompress the whole thing. A zip utility will allow you to simply replace that one entry.

Decompressing .lz file

Curiosity is one of my personal keys. I got a folder of an executable c application, this folder include many files some are files.so , files.ini and other files.lz and I decided to try do some kind of reverse engineering, so I have used a reverse engineering online tool for the files.so and files.ini are already opened via notepad as we all know, but now my problem is about opening files.lz, which i already know that it contains libraries to be used for functions on files.so
This is what i want to know and to have some help in it how can I decompress it via a desktop tool or even an online tool?
Should be Lzip.
When you are in the linux-world, one very usefull commands is file:
$ file myFile.lz
myFile.lz: lzip compressed data, version: 1

Scripting techniques : binding / embedding files using codes?

ok so we all know that there is some awesome tools that allow you to bind a bunch of files no matter what extensions they have into one executable file ex: EasyBinder v 2.0 , or some other allow us to embed files into another one and extract them to specific locations when the file is run (extracting them without running them) like the one in Advanced bat to exe converter
, but when trying to make a script i struggle to find a way to bind or embed random files according to user input , i know it's some advanced scripting or programming techniques and maybe impossible, but the fact that there is a lot of downloadable file binders that are so basic and seem to be created using a simple gui language makes me curious .
when googling "File binders" , i found a lot of programs not even close to 1mb size, and created by some starter programmers
is there any way or any code in any scripting language that can bind files ?
waiting reply impatiently .
This - http://consolesoft.com/p/bhx/index.html will allow you to save a binary file as a a string inside batch file with the option to extract it.
Another way is to use certutil -> http://ss64.org/viewtopic.php?id=1562
you can embed a base64 string inside batch file with -----BEGIN CERTIFICATE----- and -----END CERTIFICATE----- headers around the base64 string.

extract .bin files

So I have an old dictionary on my pc, pretty old that I cannot find
any track of it's developer or the website (I guess it hasnt even been released
as an official software). I have a personal project of mine and I might need some
of this words translated (about 200-300) and I see that inside the data folder that
contains the database/list of files but Im unable to extract or read this files.
Is there any way to extract or convert these .bin files to a text format or something
readable. I've used some tools like (alcohol 120%, isobuster, magiciso, Izarc) but with
no luck. I keep getting and error message saying it is not a valid cd image file.
So I'm thinking maybe this type of .bin files are not like .bin or .iso cd files that
you can mount and read and something else might be in this case.
If you have any information kindly reply with
your suggestions.
Thank you alot.
You can try using the strings utility to extract the strings out of the file. It comes with any Linux distribution and if you are on Windows, you can get it from Windows Sysinternals.
If you are lucky and the words are not encoded, you may be able to get at the data you are looking for.
.bin is one of those extensions that has been way overused, and could be anything... What did the file come from originally? Do you need to convert these words and store them back in the original file (in their transformed form), and then expect the original app to work correctly?

Metadata Extractor for .avi, .mkv, .mp4 files

I working on metadata of various file formats,extraction of these metadata and changing these metadata. I found some java libraries for these but I want to implement these metadata extractors in C.
Please somebody give me some advice for how to proceed for writing these extractors. I would be really happy if somebody can provide me good links regarding these also
I would suggest you take a look at libavformat, which is part of ffmpeg. It's a C library that parses essentially all important audio and video containers.
Here's the documentation: http://www.ffmpeg.org/documentation.html

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