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Extracting UPDATE.APP HELP

33 posts in this topic

Posted (edited) · Report post

[quote name='Dazzozo' timestamp='1348740783' post='2027506']
This thread is great and I love it (deletesmiley)

Does the install procedure actually check for a signature? I wouldn't be surprised if Huawei relied on security through obscurity.
[/quote]

Because we're like a bunch of blind lesbians in a fish market?

I could figure out how to compile [url="https://github.com/terrex/unupdatapp"]https://github.com/terrex/unupdatapp[/url] but not in the next couple of weeks. Going away :-)
Also not sure if anyone has tried bin2app Edited by tcpaulh
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Posted · Report post

I actually have bin2app.exe, but this one was for an old tablet. Neither the update.app contains a signature nor is the structure valid (the 0x55aa5aa5 is missing and other things).

I wrote a java program for extracting and crc-checking update.app, but the other way is still impossible.
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Posted · Report post

[quote name='da2401' timestamp='1348754083' post='2027592']
I actually have bin2app.exe, but this one was for an old tablet. Neither the update.app contains a signature nor is the structure valid (the 0x55aa5aa5 is missing and other things).

I wrote a java program for extracting and crc-checking update.app, but the other way is still impossible.
[/quote]

Would be interesting to see your java app and possibly the bin2app in case someone can hack it :)
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Posted · Report post

[quote name='tcpaulh' timestamp='1355778652' post='2066352']
Would be interesting to see your java app and possibly the bin2app in case someone can hack it :)
[/quote]

Hands up anyone who'd be willing to test a package created by just such a homebrew programme. Come on now, don't be shy; it won't trash the partition table... honest.
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Posted · Report post

well some Huawei updates have bricked some phones so maybe the b952 update could cause a few also if someone tested this, if u get what I mean.
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Posted (edited) · Report post

[quote name='unaszplodrmann' timestamp='1355786768' post='2066386']
Hands up anyone who'd be willing to test a package created by just such a homebrew programme. Come on now, don't be shy; it won't trash the partition table... honest.
[/quote]

The java app in question was for extracting. I'm guessing you're having a bit of a laugh about volunteers for flashing a repacked update. Not sure though :)

I'd potentially be up for it after having a discussion with the coder.

[url="http://www.modaco.com/topic/311344-repacking-updataapp-was-new-version-of-split-updatapl/page__st__180#entry1899834"]UPDATE.APP is digitally signed with a private key only Huawei has.
What could probably be done, is patch osbl to ignore signature verification and save it to /dev/block/mmcblk0p3[/url]

.
Repacking shouldn't be a major hurdle though it wouldn't have a valid RSA key.

bin2app here :- http://people.freedesktop.org/~hadess/huawei-e585/%E6%88%91%E7%9A%84%E5%85%89%E7%9B%98/release/ Edited by tcpaulh
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Posted · Report post

[quote name='tcpaulh' timestamp='1355792606' post='2066405']
I'm guessing you're having a bit of a laugh about volunteers for flashing a repacked update.
[/quote]

Aye. Ohh, I seee - bin2app is ostensibly a Huawei tool. No more risky than using any another vendor tool, like Odin for example... :unsure: :blink: :D
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[quote name='unaszplodrmann' timestamp='1355845577' post='2066585']
Aye. Ohh, I seee - bin2app is ostensibly a Huawei tool. No more risky than using any another vendor tool, like Odin for example... :unsure: :blink: :D
[/quote]

Pretty much. At least they use it. Probably not that version though. Patching the os bootloader (mmcblk03 off the top of my head :eek: ?!?) so it doesn't require the RSA signature is perhaps the biggest hurdle.
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