[Fire HD 8 and HD 10 General] retyre:
Update: While this still works, there's an easier method here. Please try that first.

Disclaimer #1: KingoRoot, dr.fone, and most other one-click rooting tools are characterized as malware. Should you use these tools? That decision is yours and yours alone. I do not own any of the tools that follow. All the links are to files that are publicly available.

Disclaimer #2: This is a risky undertaking. If you encounter issues or, worse, end up with a brick, I (or the others here) will try to help you, but the risk is all yours.

Disclaimer #3: This approach is not for everyone. If you lack a half-decent linear combination of (1) troubleshooting skills, (2) patience, (3) reading-comprehension skills, and (4) some love of risk, please stop here.

Disclaimer #4: I have only tried this on the 2017 HD 10. If you try this on another device type and it works, please post in the appropriate forum. If you try this on another device type and it does not work, don't be shocked.

NAQ (Never-Asked Questions):

a. What is "offline" rooting?

-- Rooting your device without needing access to the Internet (i.e., the rooting process requires no Internet connection; not on the phone/tablet, not on the computer).

b . Aren't there a gazillion rooting threads for the 2017 HD 10, each claiming to be easier than its predecessors? Why even bother with this fancy "offline" stuff?

-- All of those rooting threads use tools that require Internet access on the PC. What if those tools stop working because of server issues on their end?

-- More importantly, it's well known that these one-click rooting tools extract and transmit a ton of device-identifying information (e.g., IMEI, Serial Number, ...) that is not central to the rooting process. Why give that up?

For a few weeks now, I have been trying to come up with a rooting process that does not require any Internet access on the computer (we know KingoRoot and dr.fone need Internet access on the computer). I have finally figured out how. As a result, we should be able to root the 2017 HD 10 even if these rooting options cease to exist (assuming Amz updates are blocked at 5.6.0.1).

While Kingo does a good job of hiding its root exploits (i.e., the scripts it fetches from the cloud), the good doctor is a bit more generous (its files are downloaded onto a folder on the disk). I copied everything from that folder after a successful root attempt on my test tablet and examined each file. I was able to tinker with the scripts and binaries after moving them to /data/local/tmp on my tablet, but wasn't able to achieve anything meaningful ... until tonight. Noting the presence of some weirdly-named files in that folder, I did a simple Google search and came up with this hit. Of particular interest is method 2 (ELF). Based on that reading and armed with the files from the folder on the disk, I was able to achieve root without Internet access on my computer. I have done so multiple times, w/ and w/o a fresh sideload of the 5.6.0.0 update .bin. The process succeeds more often than it fails (when it does fail, a reboot and retry usually works), not unlike failures with Kingo or the doctor. It's the same exploit after all.

I am guessing Kingo uses a similar process, but does enough to make its scripts difficult to obtain offline. Access to the doctor's scripts and some clarity on the rooting procedure should help others on this forum make even greater progress.

Update: See my post #10 in this thread for Kingo-related instructions. To do this with Kingo, you would complete steps 4 and 5 in this OP and then move to the steps in post #10.

You will need to download a few files (for which you will, of course, need Internet on your computer):

1. Download the exploits here (it's clear that the exploit that's working for the 2017 HD 10 is Dirty COW: CVE-2016-5195): 20165195.zip and SuperSU_18+.zip and extract to their respective folders.

2. Copy all the files from the SuperSU_18+ folder into the 20165195 folder (overwriting wsroot.sh). Rename 20165195 to something simpler, say c. Inside the c folder, you should have the following binaries and scripts: ddexe, debuggerd, fileWork, install-recovery.sh, Matrix, pidof, start_wssud.sh, su, su_arm64, Superuser.apk, supolicy, toolbox, and wsroot.sh. You can delete Superuser.apk (we will be downloading SuperSU next).

3. Download the SuperSU 2.82 SR5 apk from here (or search for another source). Move it to the c folder.

4. Install the Fire's drivers and ADB+fastboot from here (if you haven't already done so).

You will not need Internet access from this point forward.

You should now have the c folder with 12 files and the SuperSU apk handy. If you lose root for whatever reason (or if you just want to test this out), you do not need KingoRoot or dr.fone. Follow these steps:

5. Do the basics:

-- Fire up your Fire.

-- On your first boot, start the process by clicking on Continue, then click on any of the WiFi choices, click Cancel, choose Not Now, and then Skip. Once the Fire gets to the home screen, pull down the notification bar and enable airplane mode.

-- Become a developer by tapping Serial Number (in Device Options) 7 times, go to Developer Options, and Enable ADB.

-- Go to Security in Settings and enable Apps from Unknown Sources.

-- Connect your Fire to the computer, Allow USB debugging on the tablet, check the popup box to Always allow from this computer (if this does not happen here, it will when you start adb next).

-- Type adb shell in an administrative command prompt. You should enter the tablet as a user.

6. On your computer, copy all the files from the c folder to the Fire's internal storage (/sdcard). Next, go to the command prompt with adb shell and copy the files to /data/local/tmp:

cp /sdcard/c/* /data/local/tmp
cd /data/local/tmp
ls -l

7. Change permissions:

chmod 755 *

8. This is the ballgame: Run:

./Matrix /data/local/tmp 2

This tells Matrix to look for files in /data/local/tmp, with "2" installing su in /system/xbin ("1" installs su8 in /system/xbin). Wait for the process to complete (it will take a minute or two). If it's successful, you will see something like the following as it completes:

[*] exploited 0x7f83021000=f97cff8c
end!!!!!!!
<WSRoot><Exploit>0</Exploit></WSRoot>
<WSRoot><Done>0</Done></WSRoot>

If it does not report success as depicted above (note that the memory address exploited might be different, but the end result has to be a "0" and "Done"), delete everything from /data/local/tmp/, (hard) reboot the tablet, and retry (starting from step 5). Failure is likely if an exploit check takes greater than 30 seconds, in which case the device may have to be manually rebooted.

This is a sample of the entire output that should be generated:

shell@suez:/data/local/tmp $ ./Matrix /data/local/tmp 2
<WSRoot><Command>0</Command></WSRoot>
<WSRoot><InitResource>0</InitResource></WSRoot>
Decrypt Success: /data/local/tmp/fileWork
Output File Name: /data/local/tmp/fileWork.
<WSRoot><Decrypt>0</Decrypt></WSRoot>
extracting: /data/local/tmp/Bridge_wsroot.sh
extracting: /data/local/tmp/krdirtyCow32
extracting: /data/local/tmp/krdirtyCow64
extracting: /data/local/tmp/libsupol.so
extracting: /data/local/tmp/my.sh
extracting: /data/local/tmp/mysupolicy
extracting: /data/local/tmp/patch_script.sh
extracting: /data/local/tmp/root3
<WSRoot><Decompression>0</Decompression></WSRoot>
execute string: /data/local/tmp/root3 /data/local/tmp/ 2
WARNING: linker: /data/local/tmp/root3: unused DT entry: type 0x6ffffffe arg 0x600
WARNING: linker: /data/local/tmp/root3: unused DT entry: type 0x6fffffff arg 0x1
ro.build.version.sdk :22
ro.product.cpu.abi :arm64-v8a
is x64
execute string: /data/local/tmp/krdirtyCow64 /data/local/tmp/ 2
WARNING: linker: /data/local/tmp/krdirtyCow64: unused DT entry: type 0x6ffffffe arg 0xd30
WARNING: linker: /data/local/tmp/krdirtyCow64: unused DT entry: type 0x6fffffff arg 0x1
path : /data/local/tmp/
path : /data/local/tmp
[*] path_script:/data/local/tmp/patch_script.sh /data/local/tmp
rm: /data/local/tmp/sepolicy: No such file or directory
rm: /data/local/tmp/load: No such file or directory
supolicy v2.76 (ndk:armeabi) - Copyright (C) 2014-2016 - Chainfire

Patching policy [/data/local/tmp/sepolicy] --> [/data/local/tmp/load] ...
-permissive:zygote=ok
-permissive:kernel=ok
-permissive:init=ok
-permissive:su=ok
-permissive:init_shell=ok
-permissive:shell=ok
-permissive:servicemanager=ok
- Success

find_opcode offset:2d0 opcode:aaffbbee
find ok star:7f8325c008 end:7f8325c2d8 size:2d0
sh : /data/local/tmp/my.sh /data/local/tmp 2 fwrite is count 210148 /data/local/tmp/load1
fwrite is count 54204 /data/local/tmp/load2
find_opcode offset:2b4 opcode:eaeaeaea
find_opcode offset:2b8 opcode:ebebebeb
find_opcode offset:22d opcode:abababab
load = 408a0 load1 = 334e4 load2 = d3bc
find_opcode offset:2b0 opcode:efefefef
find_opcode offset:24d opcode:cdcdcdcd
find_opcode offset:2bc opcode:acacacac
init_shellcode
loadsize:264352
loadpath:/data/local/tmp/load
shpath:/data/local/tmp/my.sh /data/local/tmp 2
shpath:2bc

open /proc
PID:208
find logd pid : d0
_inject_start_s:0x7f8325c008
Copying /sepolicy to /data/local/tmp/cp_sepolicy
cow_exploit_mv_file_init: Overriding /sepolicy from /data/local/tmp/load1
size: 210148

[*] mmap 0x7f83055000;
[*] exploit (patch)
[*] currently 0x7f83055000=8f97cff8c
sched_setaffinity: Function not implemented[*] madvise = 0x7f83055000 210148
checking the patch ... exploit
sleep 1s
sleep 1s
sleep 1s
sleep 1s
sleep 1s
sleep 1s
sleep 1s
sleep 1s
sleep 1s
sleep 1s
sleep 1s
sleep 1s
sleep 1s
sleep 1s
sleep 1s
sleep 1s
check done
sched_setaffinity: Function not implementedmadviseThread() done
procselfmemThread() done
[*] exploited 0x7f83055000=f97cff8c
[main]p_vdso_addr:0x7f8325a000 p_vdso_buffer:0x400000
[*]set_ret_jmp
[*]set_ret_jmp 400410
[*]set_ret_jmp 400420

[main] write 1
Parent is over..status == 0
socket: No such file or directory
socket = 7
ret = ffffffff
connect
: No such file or directory
ret = ffffffff
find coe f
[main] write 2
Parent is over..status == 0
cow_exploit_mv_file_init: Overriding /sepolicy from /data/local/tmp/load2
warning: new file size (54204) and file old size (210148) differ
size: 54204

[*] mmap 0x7f83236000;
[*] exploit (patch)
[*] currently 0x7f83236000=8f97cff8c
sched_setaffinity: Function not implemented[*] madvise = 0x7f83236000 54204
checking the patch ... exploit
sleep 1s
sleep 1s
sleep 1s
sleep 1s
sleep 1s
sleep 1s
sleep 1s
check done
sched_setaffinity: Function not implementedmadviseThread() done
procselfmemThread() done
[*] exploited 0x7f83236000=8600a5
find coe 36
Parent is over..status == 0
cow_exploit_mv_file_init: Overriding /sepolicy from /data/local/tmp/cp_sepolicy
size: 210148

[*] mmap 0x7f83021000;
[*] exploit (patch)
[*] currently 0x7f83021000=10007008600a5
checking the patch ... exploit
sleep 1s
sched_setaffinity: Function not implementedsched_setaffinity: Function not implemented[*] madvise = 0x7f83021000 210148
sleep 1s
sleep 1s
sleep 1s
sleep 1s
sleep 1s
sleep 1s
sleep 1s
sleep 1s
sleep 1s
sleep 1s
sleep 1s
sleep 1s
sleep 1s
sleep 1s
sleep 1s
sleep 1s
sleep 1s
sleep 1s
check done
madviseThread() done
procselfmemThread() done
[*] exploited 0x7f83021000=f97cff8c
end!!!!!!!
<WSRoot><Exploit>0</Exploit></WSRoot>
<WSRoot><Done>0</Done></WSRoot>

9. Confirm by getting to a root shell:

su

10. Install SuperSU from /sdcard/c/ (you can just click on Docs on your home screen, go to local storage, then the c directory, and install the apk).

11. Open SuperSU and update binary as Normal (should be successful).

12. Click to reboot.

13. Set SuperSU to Grant as default access.

14. Delete the two wondershare directories in /data/data-lib/:

cd /data/data-lib
rm -r com.wondershare.DashRoot
rm -r wondershare

15. Not required: Perform other cleanup as needed (look for files in /system/xbin, /system/bin, /data, ... based on install date/time, etc.). Mount /system writable if you're going to be cleaning up items in /system:

su
mount -w -o remount /system