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XOR Search with reverse HEX


takumy

Question

Posted

I am searching a value R which is encrypted by XOR. 

Let the two XOR inputs be v1 and v2.

I found that R = hex(v1) XOR reverse-hex(v2).

example.thumb.png.fa82554ed6db5abab5981dace0da662a.png

In above example, 5F368E20h XOR 5F368EBEh = 9Eh = 158 (decimal, which is the value display in my game)

Is it possible to do the above XOR search? 

Thank you very much.

3 answers to this question

Recommended Posts

Posted

The contiguous bytes should be: 5F 36 8E 20 BE 8E 36 5F, why 9EX7 but not 9EX1?

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On the other hand, how about the value greater than 255?

For example:

e1.thumb.png.cd1d30abf1922f58f51e6599ddfe7422.png

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