Many closed source formats are just not there. There are some caveats though: Quite a few of the links don’t work, the formats are not all complete submissions, and the list of formats is selective and not a total list of all formats available. A quick online check for resources for file format specifications take us to sites like, which serves as a repository for various software and hardware formats. In cases where you don’t get a detailed specification from the authors of the file formats, reverse engineering the software that makes use of that format would be needed. In our case, DEX format is very well described indeed. Basically, when you are dealing with such a file format, you need to look at the specifications/documentation provided by the vendor or author of the file format or reverse engineer the parsing code from the software that uses it. Locations specify from where to start looking and lengths specify the number of bytes covered. It is not necessary for every file format to have something called the header or metadata (like a table of contents for the file, it describes the data, without necessarily being the data itself) that describes the various 1) locations and 2) lengths of the individual data elements contained in the file structure. In this context, the organization of data elements in memory or filesystem would entail a linear sequence of bytes. A data structure is a specific arrangement, or format, of data. #Dex online reverse directory android#Taking cues from the gaming community, wherein graphics files are converted from one format to another by writing custom parsers, we will proceed with the steps of writing parsers for the DEX android file for the Dalvik VM.Ī file format is, in its simplest abstraction, a data structure. File format parsing and converting for further processing is a fundamental activity in many computer software-related tasks.
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