Now, on more recent games this has been made much harder. You can load up a game save state file and change the amount of money you have from $1,000 to $1,000,000, for example. Game & File HackingĪnother popular reason you might use a hex editor is game hacking. If you see a filetype but have no idea what kind of program might be used to open that file, you might check out OpenWith which lists many file extensions and the programs used to open them. Open the file in a hex editor, and it is immediately clear that this file is indeed a PDF file, and a quick switch to the file extension and you will be able to open it right up in Adobe Acrobat or other proper reader. When your system sees that extension, it will try to launch Microsoft Word to open the file - but it will fail. Now that we have the basics of hexadecimal out of the way, let's move on to some hex editors. Once you reach the end of the numeric "digits", you simply increase the number to the left by one, just like you do with the decimal counting system. Counting from 0 to 31 (converting from decimal to hexadecimal):Ġ 1 2 3 4 5 6 7 8 9 A B C D E F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F Instead of using digits 0-9, hexadecimal uses digits from 0 to F. The binary number system made up of 0s and 1s was invented by Gottfried Wilhelm von Leibniz.įinally in the 1950s or 1960s IBM formalized the Hexadecimal number system, which is a short way to represent binary data. Decimal was invented by the Persians about 6000 years ago.įast forward to 1679. The number system that humans use to count is called decimal, the numbers from 0 to 9. So how does hex work, what is a hex editor and why might you need to use one on your PC? Yet being able to directly modify the raw bits and bytes in your computer can sometimes be used to your advantage. Although literally every file is stored on your computer in this format, you almost never see this data anywhere. The term hex, short for hexadecimal or base-16, is the raw data structure that all files stored on your computer follow.
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