Disassembler Download UPD
It's available for users with the operating system Windows 95 and prior versions, and you can download it only in English. The current version of the program is 0.25 and the latest update happened on 6/14/2011.
About the download, Win32Program Disassembler is a not that heavy program that doesn't take up as much free space than many programs in the section Development software. It's a program often downloaded in some countries such as India, Romania, and Pakistan.
The 'result.c' file is created in the directory '../output'. These files include the executable, required run-time libraries, support filessuch as type definitions files for many Windows and Linux APIs etc.Simply download and unzip the files in a directory of your choice. There is noinstaller, nothing is changed in your registry. The program RecStudio4 can be run fromthe extracted bin directory.
Sep. 19, 2015Updated disassembler to udis 1.7.2. More aggressive type detection. Better handling of partial registers (e.g. RAX -> EAX -> AX -> AL). Improved x86_64 register definitions. Added several APIs to support files. Improved navigation to prev/next function in the UI.Jun. 2, 2014Fixed crash with huge number of _t variables. Fixed type detection in truncating assignments. Fixed recognition of memcpy sequences in Windows.Jan. 14, 2014Added detection of unicode strings. Improved code structuring.Nov. 20, 2012Fixed definition of entry points in signature files. Recognition of PlayStation 1 binary files, and addition of PS1 system call signature files. Improved support for some MIPS instructions.Oct. 20, 2012Significantly reduced memory used and significantly increased decompilation speed. Major improvements and fixes in code structuring, and fixed several bugs.Aug. 29, 2012Fixed decoding of IMUL d,a,# instruction.Aug. 25, 2012Function detection from .dymsym and .got symbols. Added MIPSLE support package.May 25, 2012Better recognition of parameters from symbolic info. Added gcc C++ support file for C++ exceptions. Improved user interface. Added GUI version for Mac.May 10, 2012Fixed switch() detection. Fixed loading PowerPC MachO files. Significantly speeded up Linux version.Apr. 24, 2012Fixed memory leak and divide by zero during constant expr. evaluation. Added loading 32-bit x86 MachO binaries and 64-bit CLI on Windows.Apr. 15, 2012Show line number and name local variables from -g info if present in ELF. Show location of local variables.Apr. 9, 2012Improved code structuring and symbol detection in ELF.Apr. 6, 2012Fixed memory leak, endless loop, crashesMar. 19, 2012Added command line version for Linux
From version 2.1, RecStudio uses the disassembler included in the Netwide Assembler package (version 0.98.39). The project to build the ia32 disassembler as a DLL is available here. No other portions of NASM are used in RecStudio. The Netwide Assembler can be downloaded from SourceForge.net. At this time the other disassemblers are still statically linked in the RecStudio executable, although eventually they'll be made available as shared libraries.
52 is a 8051/8052 command line Disassembler for Linux and Windows with C source code that is distributed here underGNU General Public License. D52 is the same disassembler that is used by our Micro C 8051 Development System for disassembling of standalone hex files.
z80dasm is a disassembler for the Zilog Z80 microprocessor and compatibles. Itcan be used to reverse engineer programs and operating systems for 1980'smicrocomputers using this processor architecture (for example Sinclair ZX81,Spectrum and many others). It was developed to produce the Galaksija ROMdisassembly.
The core of z80dasm is based largely on dz80 3.0, a Z80 disassemblerwritten by Jan Panteltje. Compared to dz80, z80dasm fixes multiple bugs andadds several new features. It also has a more UNIX-like command line interface.For a detailed list of changes compared to dz80, see NEWS file included in thesource.
After decompressing the GIF file, you can download specific frames (right-click the image and select Save image as...) or save them all at once as a single zip file by clicking "Download frames as ZIP archive."
If you want to rearrange frame order or remove some frames and restore animation, click the "Edit animation" button. It will take you to the GIF maker window. You can also download the ZIP file, edit some frames in the image editor of your choice and then upload a new ZIP archive back to GIF maker. If you keep the file names unchanged, it will preserve the frame order and duration.
The Disassembler tool converts a set of binary bytes into assembly language. Assembly language is a low-level language where each line generally corresponds to a operation that can be done on a machine's CPU, also called an opcode. A disassembler is the opposite of an assembler, which takes assembly language and converts it to binary bytes and this is commonly used in reverse engineering. Disassembly can be done through the Disassembler tool or through a Template or Script as discussed in the Disassembly in Templates help topic. The Inspector can also be used to perform disassembly for a single opcode.
After the disassembler is run, the results are displayed in the Disassembler tab of the Output Window as shown above. The disassembled assembly language instructions are displayed in the Value column and selecting a row in the table selects the bytes that correspond to that instruction in the Hex Editor. The format for the Start and Size columns can be controlled by right-clicking on a cell in the column as described in the Working with Template Results help topic. The Name column lists the number of each Opcode starting from zero. Note that in the first row of the Name column the array size listed is the number of bytes disassembled, not the number of opcodes generated. 010 Editor does not currently have the capability to execute the produced disassembly and to do this a separate emulator or debugger tool should be used. Right click on the table and select Clear to clear the disassembler results or press the Esc key while the table is focused to hide the window.
I also tried to find Jad with no luck. My quick solution was to download MacJad that contains jad. Once you downloaded it you can find jad in [where-you-downloaded-macjad]/MacJAD/Contents/Resources/jad.
In essence, a disassembler is the exact opposite of an assembler. Where an assembler converts code written in an assembly language into binary machine code, a disassembler reverses the process and attempts to recreate the assembly code from the binary machine code.
Since most assembly languages have a one-to-one correspondence with underlying machine instructions, the process of disassembly is relatively straight-forward, and a basic disassembler can often be implemented simply by reading in bytes, and performing a table lookup. Of course, disassembly has its own problems and pitfalls, and they are covered later in this chapter.
Many disassemblers have the option to output assembly language instructions in Intel, AT&T, or (occasionally) HLA syntax. Examples in this book will use Intel and AT&T syntax interchangeably. We will typically not use HLA syntax for code examples, but that may change in the future.
Here we are going to list some commonly available disassembler tools. Notice that there are professional disassemblers (which cost money for a license) and there are freeware/shareware disassemblers. Each disassembler will have different features, so it is up to you as the reader to determine which tools you prefer to use.
Many of the Unix disassemblers, especially the open source ones, have been ported to other platforms, like Windows (mostly using MinGW or Cygwin). Some Disassemblers like otool ([OS X) are distro-specific.
Since data and instructions are all stored in an executable as binary data, the obvious question arises: how can a disassembler tell code from data? Is any given byte a variable, or part of an instruction?
Many interactive disassemblers will give the user the option to render segments of code as either code or data, but non-interactive disassemblers will make the separation automatically. Disassemblers often will provide the instruction AND the corresponding hex data on the same line, shifting the burden for decisions about the nature of the code to the user. Some disassemblers (e.g. ciasdis) will allow you to specify rules about whether to disassemble as data or code and invent label names, based on the content of the object under scrutiny. Scripting your own "crawler" in this way is more efficient; for large programs interactive disassembling may be impractical to the point of being unfeasible.
The general problem of separating code from data in arbitrary executable programs is equivalent to the halting problem. As a consequence, it is not possible to write a disassembler that will correctly separate code and data for all possible input programs. Reverse engineering is full of such theoretical limitations, although by Rice's theorem all interesting questions about program properties are undecidable (so compilers and many other tools that deal with programs in any form run into such limits as well). In practice a combination of interactive and automatic analysis and perseverance can handle all but programs specifically designed to thwart reverse engineering, like using encryption and decrypting code just prior to use, and moving code around in memory.
User defined textual identifiers, such as variable names, label names, and macros are removed by the assembly process. They may still be present in generated object files, for use by tools like debuggers and relocating linkers, but the direct connection is lost and re-establishing that connection requires more than a mere disassembler. Especially small constants may have more than one possible name. Operating system calls (like DLLs in MS-Windows, or syscalls in Unices) may be reconstructed, as their names appear in a separate segment or are known beforehand. Many disassemblers allow the user to attach a name to a label or constant based on his understanding of the code. These identifiers, in addition to comments in the source file, help to make the code more readable to a human, and can also shed some clues on the purpose of the code. Without these comments and identifiers, it is harder to understand the purpose of the source code, and it can be difficult to determine the algorithm being used by that code. When you combine this problem with the possibility that the code you are trying to read may, in reality, be data (as outlined above), then it can be even harder to determine what is going on. Another challenge is posed by modern optimising compilers; they inline small subroutines, then combine instructions over call and return boundaries. This loses valuable information about the way the program is structured. 350c69d7ab