telnetd / gaining root

jesse · 03-05-2009, 11:42 PM

I'm not quite as gutsy as igorsk when it comes to publishing actual reverse engineering tools, but this evening I managed to get a telnetd onto my K2.

If you know how to build update packages, it should be straightforward for you to knock something together.

http://blog.fsck.com/2009/03/a-produ...ng-so-far.html
http://blog.fsck.com/2009/03/root.html

kylecronan · 03-06-2009, 12:49 AM

Did you just create an init.d script for your telnetd and link to it from /etc/rc5.d? I tried this (and a couple other methods) with a script that just ran netcat to listen and spawn a shell, but it didn't work for some reason. I'm working on crosscompiling telnetd now.

And no, I don't have any intention to do things Amazon wouldn't like. They must not care too much anyway, because they apparently did nothing to make the K2 any different/harder to hack than the K1 (which had published info on it!)

Kyle

jesse · 03-06-2009, 12:59 AM

see if debugMessages shows you what happened when your update ran. (But you don't need to build your own telnet. you can use a statically linked busybox built for android or maemo.

kylecronan · 03-06-2009, 01:36 AM

I haven't noticed anything called debugMessages. What's that?

goldfinger · 03-06-2009, 08:48 PM

I'm just interested in getting custom screensavers. I don't care about getting free internet. Just a Java developer interested in tinkering with my Kindle. I go a compiled andriod busybox, but having problems creating the update*.bin file.

daffy4u · 03-06-2009, 09:02 PM

Quote:

Originally Posted by goldfinger

I'm just interested in getting custom screensavers. I don't care about getting free internet. Just a Java developer interested in tinkering with my Kindle. I go a compiled andriod busybox, but having problems creating the update*.bin file.

Another member has already come up with a hack for screensavers on K2. See post #53 of this thread.

slayda · 03-06-2009, 09:14 PM

daffy4u, do you have any idea if this will work the same for the K1?

daffy4u · 03-06-2009, 09:16 PM

Quote:

Originally Posted by slayda

daffy4u, do you have any idea if this will work the same for the K1?

There is a different set-up for K1. Those instructions are here.

daffy4u · 03-06-2009, 09:17 PM

Quote:

Originally Posted by jesse

I'm not quite as gutsy as igorsk when it comes to publishing actual reverse engineering tools, but this evening I managed to get a telnetd onto my K2.

If you know how to build update packages, it should be straightforward for you to knock something together.

http://blog.fsck.com/2009/03/a-produ...ng-so-far.html
http://blog.fsck.com/2009/03/root.html

You're all over the place. You keep popping up in my Google Reader.

lovebeta · 03-07-2009, 02:01 AM

I was wondering if one can exchange the font and get unicode support after gaining root. Any idea?

stevenmoy · 03-07-2009, 02:07 PM

The device supports unicode already and its the font that they are shipping missing the glyphs that you want. (I know minor difference but everyone seems to forget the difference between supporting unicode and the glyphs required to display the characters)

Obviously its possible to hack the device and replace the font, just remember that font itself is a copyrighted work, and Microsoft didn't spends years + tons of money to make a font for you to use it in the Kindle =D

clarknova · 03-07-2009, 03:59 PM

Quote:

Originally Posted by stevenmoy

Obviously its possible to hack the device and replace the font, just remember that font itself is a copyrighted work, and Microsoft didn't spends years + tons of money to make a font for you to use it in the Kindle =D

Copyrighted doesn't mean unusable. Microsoft's EULA for Times/Arial/Courier gives you the right to install all you want, wherever you want. Which is why they're freely downloadable.

Though MS is not even close to being the only source for Unicode fonts.

jesse · 03-07-2009, 06:02 PM

I have some ideas about getting proper and free fonts onto the Kindle. If I can make it go, I'll package an "upgrade"

lovebeta · 03-07-2009, 08:22 PM

Quote:

Originally Posted by jesse

I have some ideas about getting proper and free fonts onto the Kindle. If I can make it go, I'll package an "upgrade"

That could be the best news EVER!

stevenmoy · 03-07-2009, 10:49 PM

I should mention that whatever package you dream of releasing, indicate the change in the version string file; otherwise, customer service has no idea that someone reports a problem with all these misc. packages installed. Costs both the dev + qa griefs on hunting ghosts.

03-05-2009, 11:42 PM	#1
jesse Connoisseur Posts: 65 Karma: 30418 Join Date: Jan 2009 Device: Kindle 2	telnetd / gaining root I'm not quite as gutsy as igorsk when it comes to publishing actual reverse engineering tools, but this evening I managed to get a telnetd onto my K2. If you know how to build update packages, it should be straightforward for you to knock something together. http://blog.fsck.com/2009/03/a-produ...ng-so-far.html http://blog.fsck.com/2009/03/root.html

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03-06-2009, 12:49 AM	#2
kylecronan - Posts: 15 Karma: 12 Join Date: Feb 2009 Location: Chicago, IL Device: Kindle 2	Did you just create an init.d script for your telnetd and link to it from /etc/rc5.d? I tried this (and a couple other methods) with a script that just ran netcat to listen and spawn a shell, but it didn't work for some reason. I'm working on crosscompiling telnetd now. And no, I don't have any intention to do things Amazon wouldn't like. They must not care too much anyway, because they apparently did nothing to make the K2 any different/harder to hack than the K1 (which had published info on it!) Kyle

03-06-2009, 12:59 AM	#3
jesse Connoisseur Posts: 65 Karma: 30418 Join Date: Jan 2009 Device: Kindle 2	see if debugMessages shows you what happened when your update ran. (But you don't need to build your own telnet. you can use a statically linked busybox built for android or maemo.

03-06-2009, 01:36 AM	#4
kylecronan - Posts: 15 Karma: 12 Join Date: Feb 2009 Location: Chicago, IL Device: Kindle 2	I haven't noticed anything called debugMessages. What's that?

03-06-2009, 08:48 PM	#5
goldfinger Junior Member Posts: 8 Karma: 16 Join Date: Mar 2009 Device: Kindle 2	I'm just interested in getting custom screensavers. I don't care about getting free internet. Just a Java developer interested in tinkering with my Kindle. I go a compiled andriod busybox, but having problems creating the update*.bin file.

03-06-2009, 09:14 PM	#7
slayda Retired & reading more! Posts: 2,764 Karma: 1884247 Join Date: Sep 2006 Location: North Alabama, USA Device: Kindle 1, iPad Air 2, iPhone 6S+, Kobo Aura One	daffy4u, do you have any idea if this will work the same for the K1?

03-07-2009, 02:01 AM	#10
lovebeta Groupie Posts: 176 Karma: 406 Join Date: Jan 2008 Device: Amazon Kindle 2, Amazon Kindle, Sony PRS-505	I was wondering if one can exchange the font and get unicode support after gaining root. Any idea?

03-07-2009, 02:07 PM	#11
stevenmoy Zealot Posts: 133 Karma: 348 Join Date: Jan 2008 Device: Kindle 2	The device supports unicode already and its the font that they are shipping missing the glyphs that you want. (I know minor difference but everyone seems to forget the difference between supporting unicode and the glyphs required to display the characters) Obviously its possible to hack the device and replace the font, just remember that font itself is a copyrighted work, and Microsoft didn't spends years + tons of money to make a font for you to use it in the Kindle =D

03-07-2009, 06:02 PM	#13
jesse Connoisseur Posts: 65 Karma: 30418 Join Date: Jan 2009 Device: Kindle 2	I have some ideas about getting proper and free fonts onto the Kindle. If I can make it go, I'll package an "upgrade"

03-07-2009, 10:49 PM	#15
stevenmoy Zealot Posts: 133 Karma: 348 Join Date: Jan 2008 Device: Kindle 2	I should mention that whatever package you dream of releasing, indicate the change in the version string file; otherwise, customer service has no idea that someone reports a problem with all these misc. packages installed. Costs both the dev + qa griefs on hunting ghosts.