Root instructions for the Phab 2 Pro? - Lenovo Phab 2 Pro Guides, News, & Discussion

Has anyone successfully rooted this phone yet? I found root instructions by googling, but they were posted before the release of the phone so I don't trust them. For example:
http://guideroot.net/how-to-root-lenovo-phab-2-pro/

---

madmartian said:
Has anyone successfully rooted this phone yet? I found root instructions by googling, but they were posted before the release of the phone so I don't trust them. For example:
http://guideroot.net/how-to-root-lenovo-phab-2-pro/
Click to expand...
Click to collapse
I temp rooted mine with dirty cow, however it gained me very little. There are three main obstacles: 1) SELinux prevents most things from working, because each program runs within a tight security context, 2) using dirty cow causes the kernel to not save changes to the partition (it doesn't want to write a corrupted partition to disk), in other words a r/w /system is useless, even when you can finally write to it, 3) using dirty cow on the most attractive programs (from a permissions perspective) causes "little" problems like the screen going off.
I've been monitoring another XDA thread (sorry, link is at home) where they are working through these issues on another device. There are various approaches and workarounds, but they currently all involve way more risk than I can justify for a $500 phone.

---

AIUI, once you've got root, you need to be able to put selinux into permissive mode, but surely getting temp root is a start?
Can you not install systemless root?

---

If I got the dates right, the phone kernel should be affected by this bug. A proof of concept seemed to be promised by the reporter in the next few days. http://seclists.org/oss-sec/2016/q4/607
Will be interesting to see how it compares to dirty cow as far as access.

---

Tried KingoRoot - no luck
madmartian said:
Has anyone successfully rooted this phone yet? I found root instructions by googling, but they were posted before the release of the phone so I don't trust them. For example:
http://guideroot.net/how-to-root-lenovo-phab-2-pro/
Click to expand...
Click to collapse
Well, I tried KingoRoot by running the apk and it failed with an error at 90%. They say there is a version that can be run from Windows, but it appears to be no longer available. I emailed support. I will post again if I make any progress.

---

madmartian said:
Has anyone successfully rooted this phone yet? I found root instructions by googling, but they were posted before the release of the phone so I don't trust them. For example:
http://guideroot.net/how-to-root-lenovo-phab-2-pro/
Click to expand...
Click to collapse
DO NOT TRY "Rootkhp". IT CONTAINS VIRUSES AND OPENS UP A BUNCH OF WINDOWS, INCLUDING A FAKE ANTIVIRUS.
Thanks Windows Defender for NOT defending me!

---

calamari said:
I temp rooted mine with dirty cow, however it gained me very little.
Click to expand...
Click to collapse
Hi
what kernel version does the LP2Pro have? can you post a link to the binary so that others can try it out? thanks

---

speculatrix said:
Hi
what kernel version does the LP2Pro have? can you post a link to the binary so that others can try it out? thanks
Click to expand...
Click to collapse
https://github.com/timwr/CVE-2016-5195
Please note that the phone is 64-bit. This is source code that requires compilation and additional code to do anything useful. Prerequisites include the NDK and related build tools installed via Android Studio. I run Linux so it was relatively painless, but I imagine it might be more of a challenge under Windows.

---

calamari said:
https://github.com/timwr/CVE-2016-5195
Please note that the phone is 64-bit. This is source code that requires compilation and additional code to do anything useful. Prerequisites include the NDK and related build tools installed via Android Studio. I run Linux so it was relatively painless, but I imagine it might be more of a challenge under Windows.
Click to expand...
Click to collapse
thanks, I tried that out of curiosity on my phone and it worked (Lollipop, stock Sony Xperia Z Ultra ROM).
--edit-- It appears to give me a root shell, but it doesn't execute anything if I hit return, just hangs. but still, it proves my kernel is vulnerable ;-(

---

deleted. had a total brain fade and made this post in the wrong forum, sorry.

---

speculatrix said:
Is there someone with an AZf3U willing to trust me and try the dirtycow exploit?
I've uploaded the dirtycow exploit which I built using the Android Studio NDK to
http://www.zaurus.org.uk/download/CV...5195.built.tgz
there's two builds, one for for 32 and the other for 64 bit android
unpack and run on a linux box connected to the phone over ADB
the instructions on how to use it are here:
https://github.com/timwr/CVE-2016-5195
let me know if you need more help
Paul
Click to expand...
Click to collapse
Try posting this in the Zenfone 3 forum

---

doctahjeph said:
Try posting this in the Zenfone 3 forum
Click to expand...
Click to collapse
sorry about that. I had a total brain failure! thanks for letting me know, I copied my post over there.

---

speculatrix said:
sorry about that. I had a total brain failure! thanks for letting me know, I copied my post over there.
Click to expand...
Click to collapse
i can mess with adb commands and see what happens but fastboot isnt on this phone....i can tinker with it and see what happens with the phone. let me know what i can do !

---

Hi. I know this thread is about the Lenovo Phab2 Pro and I have the Lenovo Phab2 but maybe someone can help me. I tried what was suggested on this thread https://forum.xda-developers.com/phab-2/how-to/how-to-root-phab-2-pb2-650y-t3524305 But it seems I screwed up and now the phone gets stuck in the Lenovo sign. I'd really appreciate some help since I just bought this phone 2 days ago and now I can't use it. I can access TWRP but it seems there's nothing in /system. I think maybe that's the problem. I'm no expert but since I had rooted and downgraded and upgraded firmware several times on my previous phone, a LG G3. I thought maybe I could do this. I shouldn't have If someone can help me I'd really appreciate. Thanks in advance.

---

I was able to fix this. Sorry to have bothered.

---

Hi,
I've been able to get proper root access on this phone. One new problem I am facing is that the tango camera and sensors doesn't seem to work. Normal camera works just fine.
Is this related to the rooting or can it be anything else entirely?
Edit: Never mind. I was able to fix it without having to remove the root. Apparently 'Tango Core' didn't have permissions to access camera. I am not sure how that got reset. So I gave access to it and now it works just fine.

---

Dominic.B said:
Hi,
I've been able to get proper root access on this phone. One new problem I am facing is that the tango camera and sensors doesn't seem to work. Normal camera works just fine.
Is this related to the rooting or can it be anything else entirely?
Edit: Never mind. I was able to fix it without having to remove the root. Apparently 'Tango Core' didn't have permissions to access camera. I am not sure how that got reset. So I gave access to it and now it works just fine.
Click to expand...
Click to collapse
Dominic, what method did you use to root the Lenovo Phab 2 Pro? Can you provide a link or instructions?

---

madmartian said:
Dominic, what method did you use to root the Lenovo Phab 2 Pro? Can you provide a link or instructions?
Click to expand...
Click to collapse
Hi. Check this
https://forum.xda-developers.com/showthread.php?p=72725120
Sent from my Lenovo PB2-690M using Tapatalk

---

Anyone root the PB2-690Y
Dominic.B said:
Hi. Check this
https://forum.xda-developers.com/showthread.php?p=72725120
Sent from my Lenovo PB2-690M using Tapatalk
Click to expand...
Click to collapse
Has anyone rooted the pb2-690y?