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Is there any tool to generate bitmaps from binary files? For example using each byte as grey value and letting the user specify the column width. Or with more t

• deleted 15y ago
  [deleted]
• frou_dh 15y ago
  When doing simple graphics work at university, I would name files that contained nothing but pixel data foo.raw and IIRC some image editors would offer the options you mention when opening the files, then display them fine. Maybe that was before .raw got associated with cameras (and presumably more complex).
  • throwaway64 15y ago
    raw (can be) interpreted from any stream of binary data, you can open EXEs in photoshop as RAW, save it as a PNG, transfer it, then resave it as a raw and it will run.
• jof 15y ago
  In my favorite static analysis toolset (Radare, http://radare.org/ http://radare.org/), there's a nice feature similar to this. It "zooms" out on a big file by summarizing portions of it into chunks and displaying colored ascii characters in a chart to represent the block. With the entropy and ASCII printable filters setup, it makes repeating patterns and TEXT sections pretty clear.
• coderdude 15y ago
  You might find this useful: http://corte.si/posts/visualisation/binvis/index.html http://corte.si/posts/visualisation/binvis/index.html and related: http://corte.si/posts/visualisation/entropy/index.html http://corte.si/posts/visualisation/entropy/index.html (visualizing entropy in binary files) I used his software on an unknown format from the 1988 game Circuit's Edge to find out if/where the file was encrypted or compressed. It works well and was able to give me a (very) general idea of where in the file I needed to look further. Edit: Nope, I remembered incorrectly. I used it on the game's .exe to tell me if I was dealing with a compressed executable. It turned out that it was compressed and so I went on a search for an ancient unpacker. See before and after: edge.exe packed: http://imgur.com/PlHGl http://imgur.com/PlHGl edge.exe unpacked: http://imgur.com/jeFLb http://imgur.com/jeFLb
• someone13 15y ago
  Something I wrote a while back, using Python and PIL. import sys import math from PIL import Image def getSize(len, width): h = int(math.ceil(float(len) / width)) return (width, h) def getImage(file, width=256): d = file.read() s = getSize(len(d), width) im = Image.new('L', s) im.putdata(d) return im def main(): if len(sys.argv) < 2: print 'Usage: file2img.py <file> <output> [width]' return with open(sys.argv[1], 'rb') as f: if len(sys.argv) > 3: width = int(sys.argv[3]) img = getImage(f, width) else: img = getImage(f) img.save(sys.argv[2]) if __name__ == "__main__": main() Here's a visualization of user32.dll on Windows. Notice how you can actually make out the images that are embedded in the resources! http://i.imgur.com/7yEHR.png http://i.imgur.com/7yEHR.png
• Someone 15y ago
  It is very simple to create the binary versions of http://en.wikipedia.org/wiki/Netpbm_format http://en.wikipedia.org/wiki/Netpbm_format from the command line, if you have that binary chunk in a file. Something like: echo P4 > file echo "640 480" >> file echo 255 >> file cat binaryBlob >> file
• tripzilch 15y ago
  Both GIMP and Photoshop can read any binary file as a "raw" file format, where you can specify the bit-depth (e.g. greyscale, RGB, RGBA, etc) and column width.