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Author Topic: Ti-NSpire getkey function.  (Read 18298 times)

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Offline Stefan Bauwens

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Re: Ti-NSpire getkey function.
« Reply #30 on: February 28, 2011, 03:53:11 pm »
Thats funny. Weird actually.
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Offline Goplat

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Re: Ti-NSpire getkey function.
« Reply #31 on: February 28, 2011, 04:19:03 pm »
It's not exactly a "trojan" - that implies a program. Downgrade protection has always been there, previous OSes just always had the minimum allowed version field to 1.1.9253 (non-CAS) or 1.1.9170 (CAS) - the earliest production versions - so you never saw it.

It's not illegal, because TI never said you had the ability to downgrade the OS. In fact, the manual always said you couldn't.
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Offline Jim Bauwens

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Re: Ti-NSpire getkey function.
« Reply #32 on: February 28, 2011, 04:20:36 pm »
Concerning, getkey, I think it will be relative easy to implant as soon as an exploit is discovered for the nSpire. I have seen that the new OS can export to HTML, so maybe it is possible to import HTML files, and then try to insert weird/many characters to create a buffer overflow. 
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Offline DJ Omnimaga

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Re: Ti-NSpire getkey function.
« Reply #33 on: February 28, 2011, 04:22:48 pm »
Quote from: Goplat on February 28, 2011, 04:19:03 pm
It's not exactly a "trojan" - that implies a program. Downgrade protection has always been there, previous OSes just always had the minimum allowed version field to 1.1.9253 (non-CAS) or 1.1.9170 (CAS) - the earliest production versions - so you never saw it.

It's not illegal, because TI never said you had the ability to downgrade the OS. In fact, the manual always said you couldn't.
Ah ok, it just seemed weird that it was installed in that OS but not others, then remained intact even after actually downgrading to an allowed OS.

Quote from: jimbauwens on February 28, 2011, 04:20:36 pm
Concerning, getkey, I think it will be relative easy to implant as soon as an exploit is discovered for the nSpire. I have seen that the new OS can export to HTML, so maybe it is possible to import HTML files, and then try to insert weird/many characters to create a buffer overflow. 
That would be a nice idea if it's possible. Personally I fear the only solution for BASIC programmers will be like 83+ programmers who wanted sprites in their programs or running archived programs: ASM libs for BASIC coders.
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Offline Stefan Bauwens

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Re: Ti-NSpire getkey function.
« Reply #34 on: March 02, 2011, 05:51:58 am »
I haven't received anything from ti-cares yet( maybe they wont even send anything) but I was thinking maybe someone could make an asm/c program that has the same effect as the getkey function. I guess that with asm/c you do have a getkey function. So if yo make a program that people can run in their basic program/game that has almost the same method as getkey() this would be great.
But is it possible?
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Offline Lionel Debroux

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Re: Ti-NSpire getkey function.
« Reply #35 on: March 02, 2011, 06:00:22 am »
We don't have any integration with the OS / expression stack on the Nspire, so we can't, for now, do what we've done for more than 10 years on the TI-Z80/TIOS and TI-68k/AMS series
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Offline Jim Bauwens

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Re: Ti-NSpire getkey function.
« Reply #36 on: March 02, 2011, 09:02:42 am »
Ah, I understand. I didn't know it was that bad.
« Last Edit: March 02, 2011, 09:03:04 am by jimbauwens »
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Offline DJ Omnimaga

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Re: Ti-NSpire getkey function.
« Reply #37 on: March 02, 2011, 03:29:30 pm »
That sucks. I wonder if we can modify some stuff, though... After all someone changed the text to 1337sp33k and there are discussions about putting Linux on the Nspire without factoring the keys.
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