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Discussione: [X360 Reversing] Chapter 5: Miscellaneous kernel patches

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    [X360 Reversing] Chapter 5: Miscellaneous kernel patches

    Miscellaneous kernel patches


    Now let's take a look at the various kernel patches provided with xeBuild.
    These are disabled by default, but can be enabled under particular circumstances.

    nofcrt.bin
    Removes ODD C/R requirement

    00 06 11 A0 00 00 00 01 60 00 00 00
    Nop the branch to XeKeysFcrtLoad, during post 0x6C (INIT_SECURITY)

    00 02 D7 E0 00 00 00 03 2B 0A 00 0F 60 00 00 00 3B E0 00 00
    HV patch, not reversed yet.


    nohdd.bin
    Disable HDD

    00 15 A6 20 00 00 00 01 38 60 00 00
    Replace branch to SataChannelDetectDevice (subcall of SataDiskInitialize) with li r3,0 (faking return value)



    nohdmiwait.bin
    Disable HDCP handshake

    00 15 85 90 00 00 00 01 48 00 00 4C
    In HalpReadCurrentAVPack exclude bl HalpRebootSystem from branch case (turns bne into b).


    nointmu.bin
    Disables internal MU

    00 08 D6 A8 00 00 00 01 3D 40 60 00
    Spoofs mobo revision(?) in SfcxMuMountStorage

    00 0E 35 20 00 00 00 01 3D 40 60 00
    Spoofs mobo revision(?) in MassDriverEntry

    00 08 E9 D0 00 00 00 01 4E 80 00 20
    MmcxMuMountStorage returns immediatly to caller.


    nolan.bin
    Disable LAN PHY

    00 0D 2D DC 00 00 00 01 60 00 00 00
    Nop bl _NicInit_CNicEmac__QAAXXZ from NicDriverEntry (called during driver init)


    Ultima modifica di DrSchottky; 26-10-2015 alle 18:52
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