The first location of the writable memory is encrypted. Writing anything else to it just makes the decryption stop (invalid), nothing gets executed.
Sto Keanen Shaw a écrit : > To clarify, I was saying that you replace data in the first location of > writable memory, and if the code executes (is valid), success, if not, try > the next encryption key. > > On Sat, Jan 16, 2010 at 10:28 PM, Cory Walker <cwalke...@gmail.com> wrote: > >> Brief summary of the current situation: (as far as we know) >> >> 1. We can't replace the first code run because it is ROM (not accessible >> from the outside) stored in the Samsung processor. >> 2. We can't replace code on writable memory because it has to be encrypted >> with a key we don't know. >> 3. For the same reason, we can't do anything with the code we can read >> since >> it's encrypted. >> >> On Sat, Jan 16, 2010 at 9:05 PM, mat h <mat...@gmail.com> wrote: >> >>> Sorry I thought it did use a linux subsystem. >>> >>> On Sun, Jan 17, 2010 at 12:36 PM, The Seven <these...@gmx.net> wrote: >>> >>>> Rockbox and uclinux don't have anything in common. Rockbox uses some >>>> tiny bits of cherrypicked linux code here and there, but it is >> certainly >>>> not based on linux, as it has its own operating system core. >>>> And Rockbox can successfully load and play music at least on most 2Gs. >>>> We know about one flash chip type out of about 30 of them that at least >>>> sometimes refuses to work properly in Rockbox, but for the vast >> majority >>>> of devices, Rockbox is next to fully functional, only some small things >>>> still lacking... >>>> My iPod Nano 2G is Rockbox-only since several months now, I completely >>>> removed the Apple firmware, and it's working just fine for everyday >> use. >>>> mat h schrieb: >>>>> Well rockbox is uclinux, it boots although it doesnt work 100% (cant >>> load >>>>> music) >>>>> >>>>> On Sun, Jan 17, 2010 at 12:26 PM, The Seven <these...@gmx.net> >> wrote: >>>>>> Well, actually, I released that thing, and I don't know anything >> about >>> a >>>>>> 2G linux port... That linux boot option is just "reserved for future >>>>>> use" ;-) >>>>>> >>>>>> mat h schrieb: >>>>>>> Take a look in the archives, you will see the bootloader that they >>>>>> released >>>>>>> for the 2G, no idea about the other generations, I went to an ipod >>>> touch >>>>>>> recently :P >>>>>>> >>>>>>> On Sun, Jan 17, 2010 at 12:19 PM, The Seven <these...@gmx.net> >>> wrote: >>>>>>>> So have we got somewhere on the 2G/4G? >>>>>>>> Actually I'm very interested about your ideas, even though I think >> I >>>>>>>> have got quite a comprehensive overview about those things and the >>>> only >>>>>>>> plan that I could think of that doesn't run into a dead end >>> somewhere >>>> is >>>>>>>> figuring out that return address and making our exploit work. >>>>>>>> Nevertheless, I would be very pleased to discuss your ideas here. >>>>>>>> I may have missed something, and even if I didn't, I would at >> least >>>> like >>>>>>>> to clarify *why* a certain plan can't work in the end. >>>>>>>> So please just explain your ideas... >>>>>>>> >>>>>>>> Keanen Shaw schrieb: >>>>>>>>> I will do neither of those things. I have a few ideas of what to >> do >>>>>>>> myself, >>>>>>>>> but I'm sure none of you would listen. The guy who emailed me >> about >>>> my >>>>>>>> last >>>>>>>>> message didn't even email me back after my response, so I have no >>>>>> reason >>>>>>>> to >>>>>>>>> believe that you guys are getting anywhere. >>>>>>>>> >>>>>>>>> On Sat, Jan 16, 2010 at 3:39 PM, The Seven <these...@gmx.net> >>> wrote: >>>>>>>>>> Do you feel like opening it and soldering on the PCB? >>>>>>>>>> Or maybe donate it to stooo, our "hardware wizard"? >>>>>>>>>> We may indeed need another 3G for board-level testing... >>>>>>>>>> >>>>>>>>>> Keanen Shaw schrieb: >>>>>>>>>>> Hey people, since I'm on the mailing list I thought it would be >>>>>>>>>> appropriate >>>>>>>>>>> for me to actually say something without you blokes ignoring >> it. >>>> So, >>>>>>>> for >>>>>>>>>> the >>>>>>>>>>> last time, I have an iPod Nano 3G that I can run any kind of >> test >>>> on >>>>>>>> you >>>>>>>>>>> want. It is pretty much disposable, as I have no way to use it >>> now >>>>>> that >>>>>>>>>> I'm >>>>>>>>>>> running Puppy Linux. Anyone want to say "nice to know" or >> "we'll >>>> keep >>>>>>>> in >>>>>>>>>>> touch"? I'm not going to deal with this bullshit anymore. >>>>>>>>>>> _______________________________________________ >>>>>>>>>>> Linux4nano-dev mailing list >>>>>>>>>>> Linux4nano-dev@gna.org >>>>>>>>>>> https://mail.gna.org/listinfo/linux4nano-dev >>>>>>>>>>> http://www.linux4nano.org >>>>>>>>>>> >>>>>>>>>> _______________________________________________ >>>>>>>>>> Linux4nano-dev mailing list >>>>>>>>>> Linux4nano-dev@gna.org >>>>>>>>>> https://mail.gna.org/listinfo/linux4nano-dev >>>>>>>>>> http://www.linux4nano.org >>>>>>>>>> >>>>>>>>> _______________________________________________ >>>>>>>>> Linux4nano-dev mailing list >>>>>>>>> Linux4nano-dev@gna.org >>>>>>>>> https://mail.gna.org/listinfo/linux4nano-dev >>>>>>>>> http://www.linux4nano.org >>>>>>>>> >>>>>>>> _______________________________________________ >>>>>>>> Linux4nano-dev mailing list >>>>>>>> Linux4nano-dev@gna.org >>>>>>>> https://mail.gna.org/listinfo/linux4nano-dev >>>>>>>> http://www.linux4nano.org >>>>>>>> >>>>>>> SplitIce >>>>>>> http://thewarezscene.org >>>>>>> _______________________________________________ >>>>>>> Linux4nano-dev mailing list >>>>>>> Linux4nano-dev@gna.org >>>>>>> https://mail.gna.org/listinfo/linux4nano-dev >>>>>>> http://www.linux4nano.org >>>>>>> >>>>>> _______________________________________________ >>>>>> Linux4nano-dev mailing list >>>>>> Linux4nano-dev@gna.org >>>>>> https://mail.gna.org/listinfo/linux4nano-dev >>>>>> http://www.linux4nano.org >>>>>> >>>>> _______________________________________________ >>>>> Linux4nano-dev mailing list >>>>> Linux4nano-dev@gna.org >>>>> https://mail.gna.org/listinfo/linux4nano-dev >>>>> http://www.linux4nano.org >>>>> >>>> >>>> _______________________________________________ >>>> Linux4nano-dev mailing list >>>> Linux4nano-dev@gna.org >>>> https://mail.gna.org/listinfo/linux4nano-dev >>>> http://www.linux4nano.org >>>> >>> _______________________________________________ >>> Linux4nano-dev mailing list >>> Linux4nano-dev@gna.org >>> https://mail.gna.org/listinfo/linux4nano-dev >>> http://www.linux4nano.org >>> >> _______________________________________________ >> Linux4nano-dev mailing list >> Linux4nano-dev@gna.org >> https://mail.gna.org/listinfo/linux4nano-dev >> http://www.linux4nano.org >> > _______________________________________________ > Linux4nano-dev mailing list > Linux4nano-dev@gna.org > https://mail.gna.org/listinfo/linux4nano-dev > http://www.linux4nano.org > _______________________________________________ Linux4nano-dev mailing list Linux4nano-dev@gna.org https://mail.gna.org/listinfo/linux4nano-dev http://www.linux4nano.org
