How do I read/write (program) the MBR/VBR of a flash drive?

Question

I'm looking for a method of reading/writing (actually programming) the Master Boot Record (or maybe VBR) of a usb mass storage device. Actually its a flash drive whose MBR I want to program, so that whenever I plug it into any computer, a program (stored on my flash drive in a file) gets executed.

I know quite a bit of assembly but I don't know how to go about programming MBRs.. Please help

Thanks

preferably windows..I also use backtrack.. – Rushil Paul Jun 16 '11 at 13:40 — Rushil Paul, Jun 16 '11 at 13:40

score 2 · Accepted Answer · answered Jun 16 '11 at 11:44

2

If you're using linux, you can simple open the device file /dev/sdXY and write to it, the MBR will be the first 512 bytes.

answered Jun 16 '11 at 11:44

tstenner

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I'm using windows 7, anyways, if I use backtrack from virtual machine, is it still possible to do what you said? – Rushil Paul Jun 16 '11 at 11:50
If you're forwarding usb or use the device directly, e.g. not via a container, it should work. – tstenner Jun 16 '11 at 14:14
I opened the device file, but I got the contents in binary..I need to see the assembly commands..So that I can edit it..How do I do that? – Rushil Paul Jun 28 '11 at 10:32
You're going to need a disassembler. – tstenner Jul 02 '11 at 13:15

How do I read/write (program) the MBR/VBR of a flash drive?

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