Don't ask how to hack password. (BIOS Passwords)

#50303 by Xb0xGuru
Thu Aug 28, 2008 5:47 pm
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#50303 by Xb0xGuru
Thu Aug 28, 2008 5:47 pm
Okay - just so I'm getting this right...

"add (mathematically) together all original hex numbers what you intend to modify in the BIOS"

That would be:

11 0E E5 00 E6 00 (the original vendor and subsys IDs, omitting the F7)

= 1EA

"and also add together all hex numbers what you write in!"

Which are:

4F 14 84 70 88 70

= 24F

"Then subtract from the original sum the new sum. "

So 1EA (original)-24F (new) = FFFFFFFFFFFFFF9B

"If there is a positive number then somewhere at the end of the bios file find a 0 (where seems no live code or data) and modifiy (add) with the result. If there is a negative number then find a FF ( at the end and ..) and also add ( effectively subtract ) and modify with. "

Well it's obviously a negative value - this is where I'm now confused. What do I do from here?

I've never meddled in this stuff before so would appreciate a little help :)