osxpmem-2.1 post4 on macOS 10.15.5

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matsa...@gmail.com

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Jun 18, 2020, 8:43:35 PM6/18/20
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Hi, dear Rekall team!

I am trying to get RAM dump using OSXPmem-2.1 on my macOS 10.15 and get error:

kextload MacPmem.kext/
/Users/mihai/osxpmem.app/MacPmem.kext failed to load - (libkern/kext) authentication failure (file ownership/permissions); check the system/kernel logs for errors or try kextutil(8).

I also tried to call:
sudo chown -R root:wheel osxpmem.app/
sudo chown -R root:wheel osxpmem.app/MacPmem.kext

After that the files have the correct permissions but the same error still pops up.

kextutil:
MiMac-Pro:osxpmem.app root# kextutil MacPmem.kext
Kext rejected due to improper filesystem permissions: <OSKext 0x7fddf94166b0 [0x7fff88ab7b60]> { URL = "file:///Library/StagedExtensions/Users/mihai/osxpmem.app/MacPmem.kext/", ID = "com.google.MacPmem" }
Diagnostics for /Users/mihai/osxpmem.app/MacPmem.kext:
Authentication Failures: 
    File owner/permissions are incorrect (must be root:wheel, nonwritable by group/other): 
        /Library/StagedExtensions/Users/mihai/osxpmem.app/MacPmem.kext
        Contents
        _CodeSignature
        CodeResources
        MacOS
        MacPmem
        Info.plist

I beg you to help me as soon as possible since it is vital for me to get RAM dump

Best regards,
Igor

Mike Cohen

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Jun 18, 2020, 9:26:10 PM6/18/20
to matsa...@gmail.com, rekall-discuss
you should make sure it has permission 700.

You usually get these issued when you unpack the tar as a non-root user because tar can not preserve ownerships or permissions. Try to untar the package as root.

Thanks
Mike
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