XeNTaX

Posted: **Sat Oct 20, 2012 3:57 pm**

I read in two strings

getdstring str1 16
getdstring str2 16

Then I want to xor them

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string str1 ^= str2

Now I want to use the result as my filexor key

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filexor str1
log NAME OFFSET SIZE
filexor ""

But the result isn't right.

When I print out str1, it's just two bytes for some reason.
Is this the right way to do it?

This is the logic I want to reproduce

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for (int i = 0; i < size; i++)
   data[i] ^= str1[i % 16] ^ str2[i % 16]

So I should be able to xor the two strings first and then use the result for filexor'ing.

Posted: **Tue Oct 30, 2012 8:47 pm**

use:
encryption xor str1

and if str1 contains some zeroes specify also its size
encryption xor str1 "" 0x10

filexor wants a hex string to work so it's not good in this case.

XeNTaX

quickbms string xor then filexor

quickbms string xor then filexor

Re: quickbms string xor then filexor