Mobileread
2.5.2 Hacks?
#11  Granvillen 06-15-2010, 03:04 PM
Just in from Kindle Blogs:

Many of you have been asking and I wasn’t able to give you an answer. Well… now that 2.5.2 is available for everyone to download from Amazon.com website, it’s official. Amazon has fixed the tarbomb vulnerability in the update installer. So jailberaking and hacking the Kindle is not possible now unless you are willing to mess with hardware or have something like telnet or “unbrick” hack (that doesn’t interfere with official updates) installed. If you do, then you should know your way around Kindle well enough to be able to replace fonts yourself. If you don’t then you’ll have to stick with reading Unicode on Kindle via PDF or figure out how to hack it for yourself.

As simple as UFH installation was, some people still bricked their devices with the old hack for one reason or another. So until a new method of jailbreaking the Kindle is found that is as simple as the old ones, I’m going to postpone UFH development.

Sorry, I wish I had better news for you.



Read more: http://blogkindle.com/#ixzz0qwiIaqPf
Reply 

#12  porkupan 06-15-2010, 05:42 PM
Quote Granvillen
Sorry, I wish I had better news for you.
Well, now that it's official, let the hacking season officially begin!

Yes, 2.5.2 is just as hackable as 2.3. The "tarbomb" doesn't work, that is true. But jailbreaking is possible, and it has been achieved (many thanks to our Chinese comrades-in-arms who came up with the idea without knowing they were coming up with the idea for a general jailbreak).

Those who read Russian can read about it on our Russian ebook forums.

The easy guide in English:

1) Install jailbreak for your Kindle type. The installation will fail, but that's OK.
2) Install hacks. Installation of hacks made with --sign option but without --ex option should succeed. If the installation failed, you probably didn't install jailbreak.
3) Remove jailbreak

Yes, one will have to re-build the hacks, sorry.

As far as the so called "Unicode hack" (the name doesn't mean anything really, since Kindle understands Unicode without any hacks; this is basically a font substitution hack), I recommend using our hack, which can survive the upgrade from 2.3 to 2.5.X, and hopefully will survive the future upgrades as well. Its idea is based on USB Networking and Chinese font hack.
Reply 

#13  Pushka 06-15-2010, 07:24 PM
So there is hope porkupan? Keep us updated, and in English, puleease!
Reply 

#14  dkb 06-16-2010, 01:13 AM
This may be a dumb question, but can there be a Kindle app to allow for customized screen savers? Didn't Amazon announce they were allowing apps? I would even pay for a Kindle app that would allow me to personalize the screen savers.
Reply 

#15  Pushka 06-16-2010, 01:37 AM
Quote dkb
This may be a dumb question, but can there be a Kindle app to allow for customized screen savers? Didn't Amazon announce they were allowing apps? I would even pay for a Kindle app that would allow me to personalize the screen savers.
That is the theory on Amazon forum - Amazon closed the gap so that we end up paying for the font and screensaver hack. Except if an app developer can do it, so can one of our clever people on kindle board forums....
Reply 

#16  FrozenRiver 06-16-2010, 04:16 AM
Hello, porkupan... Does the jailbreak that you suggested help with the installation of usbNetwork? I need it because I need to "register" my kindle, so that I can use the collection feature of 2.5. I am using a DX US outside the US, and so I cannot register it via whispernet.

Thanks.
Reply 

#17  Granvillen 06-16-2010, 11:03 AM
Porkupan: You mentioned the Unicode Hack. I am 72 and need a different font. Would that do it and where can I download it? Thanks. I wish I was as sharp as you young folk.
Reply 

#18  clarknova 06-16-2010, 11:32 AM
Quote porkupan
Yes, 2.5.2 is just as hackable as 2.3. The "tarbomb" doesn't work, that is true. But jailbreaking is possible, and it has been achieved (many thanks to our Chinese comrades-in-arms who came up with the idea without knowing they were coming up with the idea for a general jailbreak).
Actually, they're still using the tarbomb. But they're exploiting the default update script that we already have a signature for, and it extracts the tarbomb to overwrite the signing key. This needs to be fixed, however, as there's no reason to overwrite the key, just install a new one. The update scripts use any keys in the directory. Then the "jailbreak" wouldn't have to be uninstalled.
Reply 

#19  porkupan 06-16-2010, 01:22 PM
Quote clarknova
Actually, they're still using the tarbomb.
"They" who?

Quote
But they're exploiting the default update script that we already have a signature for, and it extracts the tarbomb to overwrite the signing key. This needs to be fixed, however, as there's no reason to overwrite the key, just install a new one. The update scripts use any keys in the directory. Then the "jailbreak" wouldn't have to be uninstalled.
I'll look into it. The idea to substitute the primary key was jyavenard's, we just got it to work on 2.5. I don't have access to a Kindle at this moment, so I cannot dump the filesystem and take a look at the updater script. If you post it here, or at least post the part where it picks the public key from /etc/uks, I will make a new jailbreak. Probably.
Reply 

#20  porkupan 06-16-2010, 01:30 PM
Quote FrozenRiver
Hello, porkupan... Does the jailbreak that you suggested help with the installation of usbNetwork? I need it because I need to "register" my kindle, so that I can use the collection feature of 2.5. I am using a DX US outside the US, and so I cannot register it via whispernet.

Thanks.
Here it is. A word of caution: I have not tested this package (at some point I installed it on 2.3 and then upgraded to 2.5, and it didn't stop working). I am 99% sure it works, but you cannot sue me for the loss of your Kindle if it doesn't.

The way you install it is like this:
1) jailbreak
2) install this package
3) uninstall jailbreak (optional)
[gz] usbnetwork25-0.11.tar.gz (1.53 MB, 2807 views)
Reply 

 « First  « Prev Next »  Last »  (2/7)
Today's Posts | Search this Thread | Login | Register