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Author: Abhishek Barla
There are many tools that gives you source code(.java file) from java bytecode(.class file), JD-GUI,decompiler.com are few of them
This is what happens in the source code
the ascii array of the input string is shuffled and then the adjacent bits of each integer are swapped and finally the two hex digits of each integer in it's hex representation are swapped
Here’s what we have to do in the exploit:
- we swap the two hex digits of each integer in it’s hex representation
- we swap the adjacent bits of each integer(func function)
- finally we then unshuffle the array and convert each value to character and join them.