How to extract a IFS file

[smash77]

Hello. Can anyone help unload the entire file system? In my case it is double, dumpifs only unloads one. https://drive.google.com/file/d/151D...8ox84c5XEXph17

[bedrock]

Hello. Can anyone help unload the entire file system? In my case it is double, dumpifs only unloads one. https://drive.google.com/file/d/151D...8ox84c5XEXph17

Doesn't look like double to me. Here is filesystem https://drive.google.com/file/d/1rlJ...ew?usp=sharing

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bedrock

[smash77]

Thanks for the answer, but this is only part of the file system, dumpifs at the end of work leaves ahead of time

[kostia111]

Hello. Help me restore
file system. these are the first steps to learning
dashboard on QNX https://cloud.mail.ru/public/5oMZ/5p9PgBEiv

[Don]

Hello, i can unpack IFS, change it and pack back. If you want know some more pelase write.

hi could tell me how to unpack ifs, thinks in advance

[Dedraman]

Доброго всем дня! Может и не по адресу обращаюсь, но нужна помощь в распаковке двух файлов прошивки для родственной системы RNEG PSA от Harman на QNX. У самого (пока) нет возможности это сделать, хотелось бы оценить, стоит ли вообще ввязываться. Файлы здесь https://yadi.sk/d/BspdZy_kxyZOmQ Буду премного благодарен!
Сама система у нас мало изучена, вот пытаюсь восполнить пробелы. Пока только научил её (хоть и не очень красиво) говорить по-русски. Хочется большего.

[bedrock]

Your ifs_1.ifs is same format as audi and can be extracted in same ways, here is linked to extracted contents of ifs_1
https://drive.google.com/open?id=12m...erH1X4JmmoH6XW

I have not studied hbcifs file, it format is different and doesn't have ifs magic number, maybe it is hb cifs and related to CIFS file standard?? Just a guess.

[Dedraman]

Your ifs_1.ifs is same format as audi and can be extracted in same ways, here is linked to extracted contents of ifs_1
https://drive.google.com/open?id=12m...erH1X4JmmoH6XW

I have not studied hbcifs file, it format is different and doesn't have ifs magic number, maybe it is hb cifs and related to CIFS file standard?? Just a guess.

Thank you very very much fo help and fast answer. Maybe hbcifs file has .efs format?
And some content I guess is similar to MMI3GApplication from Audi.

[steatlh98]

Thank you very very much fo help and fast answer. Maybe hbcifs file has .efs format?
And some content I guess is similar to MMI3GApplication from Audi.

hbcifs (Harman/Becker compressed IFS) is a signature of an IFS sub-partition (compressed) .
http://ftp.dataio.com/FCNotes/BBM/Ha...r%20Manual.pdf

I'm also interested how to extract the files from these kind of (compressed) IFS files. Header is like this:

68 62 63 69 66 73 00 00 FF E4 9D 25 01 7B 2D 86 00 DB 20 00 0B EB FF AF E1 DC 02 02 88 00 01 37 79 C3 47 D9 F1 00 00 03 69 FE 13 23 69 6D 61 67 65
h b c i f s .................................................. .................................................. .................................................. ....................................... # i m a g e

with memifs2 -q -d <ifsfile> / i get this but it failed saying read not implemented (with 2008 version of memifs2):
byte 9 - 12 (partition size in LE)
byte 13 - 16 (image size in LE)

https://haxor.fi/how-the-firmware-updates-work-on-toyota-touch-go/
https://icitech.org/wp-content/uploads/2015/09/ICIT-Brief_Whos-Behind-the-Wheel_Car-Hacking2.pdf


Update: hbcifs files are compressed with either LZO or UCL (NRV) compression.
https://reverseengineering.stackexch...v-for-analysis