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OTA - Part the 4th

PostPosted: Thu Sep 08, 2016 2:45 am
by morpheus
A simple addition but incredibly useful one - search for strings in an OTA

http://NewOSXBook.com/articles/OTA4.html

Re: OTA - Part the 4th

PostPosted: Fri Sep 16, 2016 6:32 pm
by backendbilly
Looking through the 10.0.1 IPSW, the file system 058-41249-210.dmg is not encrypted as previously done in 9.x and below and can be extracted fully. Given that the file system is not encrypted in the IPSW, what other benefits will OTA tools bring?

Re: OTA - Part the 4th

PostPosted: Fri Sep 16, 2016 8:23 pm
by Siguza
Without being in Apple's beta program, beta OTAs are easy to come by while beta IPSWs are not.

Re: OTA - Part the 4th

PostPosted: Sat Sep 17, 2016 7:23 pm
by morpheus
Thanks for vote of confidence, Siguza!

Billy - I started the OTA before Apple did their decrypted images. Plus the fact that the OTA is still useful given Part IV (more than ever aptly titled, given your question), in that you can use the ota tool to do a wide search over the entire image without unpacking it.

Re: OTA - Part the 4th

PostPosted: Sun Sep 18, 2016 5:18 pm
by backendbilly
Fair enough boss. It was very handy prior to iOS 10 for sure. I was just wondering how else to utilize the tools. Searching is definitely an asset without unpacking.

As always, your work and others on this forum is very much appreciated.

Billy

Re: OTA - Part the 4th

PostPosted: Mon Jul 31, 2017 11:36 pm
by caguilar51
After compiling the ota.c file following the instructions in the article, I get the following error trying to extract all the files from the HomePod firmware:

mmap: Invalid argument

Do I need something special installed in MacOS Sierra in order to make this works?

EDIT: Never mind I am an idiot.