If you have a computer game you can save a file. Then do something in the game that changes a value like health or hit points such as intentionally injuring a character and then saving a new file. You can then look at the two files and compare them to see how the file is changed and find where the value is stored. Sometimes you can simply convert the value in decimal to hexadecimal and search for the new value on hex editor, but sometimes that does not work so well depending on how the value is stored as sometimes a hexadecimal pair serves multiple purposes for example or the value you wish to change, changes multiple locations however this does not necessarily mean you can not figure it out.
Copyright Carl Janssen 2018
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