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CE change register

 
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Loens
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PostPosted: Thu Nov 07, 2013 5:00 pm    Post subject: CE change register Reply with quote

Well, if i change the register, f. e i change ebx to 00000007, it does a breakpoint.

Is the register changed now as long as the breakpoint is in?

is it normal that it doesnt break then anymore? Like, it just continues.
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PostPosted: Thu Nov 07, 2013 7:42 pm    Post subject: Reply with quote

You can't really talk about changing a register globally. It's a physical thing, but it's being accessed all the time by all the programs running and the OS itself. It only really makes sense in the context of an application or a thread of execution, and even then it isn't really practical to talk of freezing it or whatever.
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Dark Byte
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PostPosted: Thu Nov 07, 2013 7:58 pm    Post subject: Reply with quote

You could do a conditional breakpoint at the code you wish to break when EBX becomes 7

Set a breakpoint, rightclick it, or go to the breakpoint property window, and set the break condition to "EBX==7"

Tip: You can also do that for "Find what accesses/writes" breakpoints so they only record that occasion

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Loens
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PostPosted: Fri Nov 08, 2013 10:33 am    Post subject: Reply with quote

Well i want to do it like this..

Let's say, the adress breaks and ebx is 00000007

if success, it keeps 00000007. if fail it changes to 00000001

So how can i keep 00000007, so it wont change to 00000001?
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Dark Byte
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PostPosted: Fri Nov 08, 2013 10:52 am    Post subject: Reply with quote

do a change register on breakpoint type of breakpoint, and set EBX to 7
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Loens
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PostPosted: Fri Nov 08, 2013 10:57 am    Post subject: Reply with quote

So i put a right click, change register at this location, then at ebx i put "00000007"?

So its 00000007 as long as i have the BP in?
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