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I am trying to get a rooted android phone set up for reverse engineering purposes. I tried to root two separate phones (SM-G925A and a Google Pixel 2) but they both turned out to have locked (meaning, encrypted by the carrier) bootloaders.

Is there really no way to get around this without finding an exploit? I have tried everything short of taking the phone apart and flashing the ROM in (whatever device you use to flash a ROM chip.) Would that even work? I can't even find a single example of someone doing this for any model of phone on the internet.

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  • A bootloader does not encrypt or decrypt anything. Hence a bootloader is never encrypted. I assume you are referring to the digital signature that can be checked by the bootloader but again neither the bootloader nor the checked software is encrypted.
    – Robert
    Commented Jan 16, 2021 at 22:29
  • @Robert indeed bootloader lock state is encrypted, but that's different topic
    – alecxs
    Commented Jan 17, 2021 at 11:14
  • @alecxs Are you really sure you mean encryption and not cryptographically tamper protected? Do you have any reference for the encryption in bootloader?
    – Robert
    Commented Jan 17, 2021 at 13:43
  • @alecxs If the bootloader is OEM locked, you can't unlock the bootloader without using an exploit. For both the pixel 2 (verizon model) and SM-G925A, there are currently no known exploits. I'm 100% sure about this. Commented Jan 17, 2021 at 13:49
  • @Robert I'm not completely sure how it works honestly, you could be right about that Commented Jan 17, 2021 at 13:58

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