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[Tutorial] How to root the Doogee S88 Pro using OEM keys

[Tutorial] How to root the Doogee S88 Pro using OEM keys

hovatek
hovatek
hovatek
Administrator
49,570
24-07-2020, 03:39 PM
#1



This guide will explain how to root the Doogee S88 Pro (Mediatek Helio P70 MT6771T Android 10) by signing a Magisk-patched boot using OEM keys. This technique only works when you have the OEM's keys used to sign the images. Luckily, we do for the Doogee S88 Pro.

Requirements

  • Unlock the bootloader . The commands to use are
    fastboot flashing unlock and fastboot flashing unlock_critical

Steps to root the Doogee S88 Pro


Follow the steps below to root the Doogee S88 Pro


  1. Download rsa2048_vbmeta.pem @ https://mega.nz/file/RmwTCIoa#UABBUOsERY...thIu9jtc0g
  2. Get a Linux based PC. Windows PC users should install python and openssl and ensure to add both to PATH or use LinuxLive USB Creator
  3. Get stock boot.img from firmware or WWR backup and patch the boot.img using Magisk manager (don't flash yet)
  4. Sign the patched boot.img (magisk_patched.img) using the command:
    Code:

    python avbtool add_hash_footer --image magisk_patched.img --partition_name boot --partition_size 33554432 --key rsa2048_vbmeta.pem --algorithm SHA256_RSA2048
  5. Flash the signed patched boot using fastboot
    Code:

    fastboot flash boot magisk_patched.img

Extra
You can generate a vbmeta.img for the Doogee S88 Pro from scratch by running this avb command
Code:

python avbtool make_vbmeta_image --key rsa2048_vbmeta.pem --algorithm SHA256_RSA2048 --flag 0 --chain_partition recovery:1:keys/key_recovery.bin --chain_partition vbmeta_system:2:keys/key_vbmeta_system.bin --chain_partition vbmeta_vendor:4:keys/key_vbmeta_vendor.bin --chain_partition boot:3:keys/key_boot.bin --padding_size 8388608 --include_descriptors_from_image phone/dtbo.img --output vbmeta.img

This is only for those looking to tweak the vbmeta and isn't required to gain root.

Important Notice
  • You're to extract the public keys from stock vbmeta and name them to match the command above
  • dtbo.img used in the command is from the firmware or wwr dump
  • Information like partition size, algorithm etc can be read from the corresponding stock image using this guide

[Image: root-doogee-s88-pro.jpg]
This post was last modified: 25-01-2021, 08:10 AM by hovatek.

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Messages In This Thread
How to root the Doogee S88 Pro using OEM keys - by hovatek - 24-07-2020, 03:39 PM
RE: How to root the Doogee S88 Pro using OEM keys - by Maha63 - 20-09-2020, 07:50 PM
RE: How to root the Doogee S88 Pro using OEM keys - by mixo.ban - 11-01-2021, 09:15 AM
RE: How to root the Doogee S88 Pro using OEM keys - by X3non - 21-09-2020, 09:05 AM
RE: How to root the Doogee S88 Pro using OEM keys - by Maha63 - 21-09-2020, 09:16 AM
RE: How to root the Doogee S88 Pro using OEM keys - by hovatek - 23-09-2020, 06:44 AM
RE: How to root the Doogee S88 Pro using OEM keys - by annan101 - 31-10-2020, 04:03 PM
RE: How to root the Doogee S88 Pro using OEM keys - by JordanV-Qc - 26-10-2020, 06:40 AM
RE: How to root the Doogee S88 Pro using OEM keys - by X3non - 26-10-2020, 09:03 AM
Black screen - by LukyKuki2000 - 28-10-2020, 06:29 PM
RE: How to root the Doogee S88 Pro using OEM keys - by X3non - 29-10-2020, 12:22 AM
RE: How to root the Doogee S88 Pro using OEM keys - by Rusikxxx - 19-12-2020, 08:59 PM
RE: How to root the Doogee S88 Pro using OEM keys - by hovatek - 21-12-2020, 07:35 AM
RE: How to root the Doogee S88 Pro using OEM keys - by X3non - 12-01-2021, 09:18 AM
RE: How to root the Doogee S88 Pro using OEM keys - by mixo.ban - 22-01-2021, 01:04 PM
RE: How to root the Doogee S88 Pro using OEM keys - by siryoussef - 16-01-2021, 06:24 PM
RE: How to root the Doogee S88 Pro using OEM keys - by mixo.ban - 22-01-2021, 01:06 PM
RE: How to root the Doogee S88 Pro using OEM keys - by X3non - 18-01-2021, 10:06 AM
RE: How to root the Doogee S88 Pro using OEM keys - by siryoussef - 19-02-2021, 04:30 PM
RE: How to root the Doogee S88 Pro using OEM keys - by lle-bout - 02-05-2021, 10:26 PM
RE: How to root the Doogee S88 Pro using OEM keys - by X3non - 03-05-2021, 11:23 AM
RE: How to root the Doogee S88 Pro using OEM keys - by hans henrik - 06-06-2021, 01:41 PM
RE: How to root the Doogee S88 Pro using OEM keys - by doogeehelp - 06-09-2021, 12:08 PM
RE: How to root the Doogee S88 Pro using OEM keys - by X3non - 06-09-2021, 08:49 PM
RE: How to root the Doogee S88 Pro using OEM keys - by doogeehelp - 07-09-2021, 10:14 AM
RE: How to root the Doogee S88 Pro using OEM keys - by X3non - 08-09-2021, 09:52 AM
RE: How to root the Doogee S88 Pro using OEM keys - by johntrevor - 08-10-2021, 11:00 AM
RE: How to root the Doogee S88 Pro using OEM keys - by hovatek - 09-10-2021, 10:21 AM
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