weirdly rooted Chinese tablet - Android Q&A, Help & Troubleshooting

Hi all,
I have a weird Chinese (MT6592T) tablet, which appears to be rooted (/system/xbin/su) is installed (came rooted already), but this root is not usable (supersu does not like it), probably because of the permissions:
130|[email protected]:/ $ ls -al /system/xbin/su
-rwsr-x--- root shell 67060 2016-08-26 14:11 su
I cannot change the permissions, because I cannot remount /system rw:
[email protected]:/ $ su
[email protected]:/ # id
uid=0(root) gid=0(root) groups=1003(graphics),1004(input),1007(log),1011(adb),1015(sdcard_rw),1028(sdcard_r),3001(net_bt_admin),3002(net_bt),3003(inet),3006(net_bw_stats) context=kernel
[email protected]:/ # mount -o rw,remount -t ext4 /system
mount: Operation not permitted
The system is noname, so no chances to get another ROM...
Two questions:
1. Any idea why would they set such permissions to su?
2. Any idea how can I get proper root?

Related

Unable to browse /data/app-private with adb

I'm using the adb.exe command directly from the Android SDK to connect to my Xperia X10's file system. Here are the commands I issued:
D:\android_sdk\tools>adb shell
$ cd data/app-private
cd data/app-private
$ ls
ls
opendir failed, Permission denied
$ su
su
pwd
pwd
ls -l
ls -l
Permission denied
$ /data/app-private
$ opendir failed, Permission denied
$ exit
exit
D:\android_sdk\tools>
Two questions: 1) Why is it commands entered after typing "su" are echoed? 2) How come I can't browse the app-private directory even after entering su?
Thanks.
Have you rooted your X10 ? (think not)
A # prompt indicates superuser privileges, you did not get to be a superuser.
Why you get an echo I don't know.
mattiL said:
Have you rooted your X10 ? (think not)
A # prompt indicates superuser privileges, you did not get to be a superuser.
Why you get an echo I don't know.
Click to expand...
Click to collapse
Yes the phone is rooted. I have the AT&T branding, but used the one-click exploid to root the phone, and it works as Titanium Backup when running tells me it gained Superuser priviledges. I don't know what I'm doing wrong. This is from an MS-DOS prompt in Windows.
When you use SU for the first time, you need to have the phone screen on and unlocked. It will ask for superuser permissions. Then it will work.
naplesbill said:
When you use SU for the first time, you need to have the phone screen on and unlocked. It will ask for superuser permissions. Then it will work.
Click to expand...
Click to collapse
Ha, thanks, it worked. The key was typing SU just before I unlock the phone, then it asks me on the phone that "Unknown" wants superuser access. Thanks again.
I was finally able to apply the 'Enable Non-Market apps' fix via adb thanks to this little tip
I'm learning- slowly...
How exactly do I run scripts on this phone when connected to a PC?
Code:
C:\android_sdk\tools>adb shell
$ su
su
# mount -o remount,rw -t yaffs2 /dev/block/mtdblock2 /system
mount -o remount,rw -t yaffs2 /dev/block/mtdblock2 /system
# cd sdcard
cd sdcard
# ls -l testscript.sh
ls -l testscript.sh
----rwxr-x system sdcard_rw 54 2010-10-06 10:52 testscript.sh
# sh testscript.sh
sh testscript.sh
: not foundsh: ■#!/bin/sh
: not foundsh: /sh
: not found
mkdir <target>
#
Any ideas?
If anyone told me "You should save your files in UNIX format where each text line ends in 0x0A, and not 0x0D 0x0A as in Windows, it will work" ... you'd be right. UNIX doesn't like carriage return & line feed pairs when trying to run a shell script.

[Q] Unable to adb remount

"Operation not permitted"
What is causing this? I really want to push some files to my EVO.
Help
I have done it previously on other Roms i have flashed. I am currently on Goodies 1.5.
typhoonikan said:
"Operation not permitted"
What is causing this? I really want to push some files to my EVO.
Help
I have done it previously on other Roms i have flashed. I am currently on Goodies 1.5.
Click to expand...
Click to collapse
I believe the adb binary has to be replaced with one that has permission to do this, it is often disabled in stock builds.
an easy way around this is
adb shell
su
mount -o remount rw, /system
modplan said:
I believe the adb binary has to be replaced with one that has permission to do this, it is often disabled in stock builds.
an easy way around this is
adb shell
su
mount -o remount rw, /system
Click to expand...
Click to collapse
I typed just as you did. No help.
My results as copy and pasted:
c:\Android>adb shell
[email protected]:/ $ su
su
[email protected]:/ # mount -o remount rw, /system
mount -o remount rw, /system
[email protected]:/ # exit
exit
[email protected]:/ $ exit
exit
c:\Android>adb remount
remount failed: Operation not permitted
typhoonikan said:
I typed just as you did. No help.
My results as copy and pasted:
c:\Android>adb shell
[email protected]:/ $ su
su
[email protected]:/ # mount -o remount rw, /system
mount -o remount rw, /system
[email protected]:/ # exit
exit
[email protected]:/ $ exit
exit
c:\Android>adb remount
remount failed: Operation not permitted
Click to expand...
Click to collapse
What I posted remounts the system partition read/write. No need to adb remount after that, you can write to /system at that point.

DL701Q rooted, no apk, (digiland 7") need help backtracking how

Got root, then su binary installed need some help backtracking a few things. If someone is up for it?
I guess the first thing first is. The first time I adb shell'd I got promted with root user: ( does this happen right off the bat for anyone else? I did a few things before this with modstrings and busybox. But, didn't try adb till after)
Code:
adb shell
[email protected]:/ #
Once I noticed I had root on shell I simply found the system mount at /dev/ubui0_0 and I mounted it rw.
Code:
[email protected]:/ # mount -o remount, /dev/ubi0_0
moved the su binary over to the sdcard. wrote it to system/xbin link named to /system/bin. gave permisions.
Code:
adb push su /sdcard/
[email protected]:/ # cat /sdcard/su > /system/xbin/su
[email protected]:/ # ln -s /system/xbin/su
[email protected]:/ # chmod 6755 /system/xbin/su
[email protected]:/ # su
[email protected]:/ # :D
Off I went. I need to update the binary, but as of right now Superuser shows root as 'allow', SuperSU deny (think it old binary).
If you guys are not getting root after adb shell on this device, I think I can backtrack the modstrings and other stuff I did.
I really don't know where this device sits on getting rooted. It seems like some windows programs did it before an update that happened at some point, but not anymore? I don't have access to windows so I don't keep up with those methods.
Thanks! Hope someone can help me out.

[Q] rm / chown -> "Operation not permitted" on my rooted device

HI,
I can't delete "/system/etc/install-recovery.sh" on my rooted device.
Code:
[email protected]:/ $ su
su
[email protected]:/ # mount -o remount,rw /system
mount -o remount,rw /system
[email protected]:/ # cd /system/etc
cd /system/etc
[email protected]:/system/etc # rm install-recovery.sh
rm install-recovery.sh
rm failed for install-recovery.sh, Operation not permitted
255|[email protected]:/system/etc # chown shell install-recovery.sh
chown shell install-recovery.sh
Unable to chown install-recovery.sh: Operation not permitted
10|[email protected]:/system/etc #
Anyone knows why ?
(My device is Redmi 1 by the way)
Thanks.
Slash

Problem with secure settings

Hi all,
im using a rooted samsung galaxy note 3 with lollipop
i have installed tasker to automate a few things ...
in addition i have installed the app "secure settings" to open the lookscreen
because of the message from secure settings in "System+ Module", that "Root access was not detected. The System+ module requires root access to function, i try the following:
Found on https://www.reddit.com/comments/3uf5bn ....
---------------------------------
adb shell
su
mount -o remount,rw /system
touch /sbin/su /system/bin/su /system/xbin/su
mount -o remount,ro /system
exit
reboot
---------------------------
im using Android Debug Bridge version 1.0.41
Version 28.0.3-5475833 <-- i think that's the latest version
C:\adb>adb shell
[email protected]:/ $ su
[email protected]:/ # mount -o remount,rw /system
[email protected]:/ # touch /sbin/su /system/bin/su /system/xbin/su
touch: usage: touch [-alm] [-t YYYYMMDD[.hhmmss]] <file>
1|[email protected]:/ # exit
1|[email protected]:/ $ exit
C:\adb>adb shell
[email protected]:/ $ su
[email protected]:/ # mount -o remount,rw /system
[email protected]:/ # touch /sbin/su /system/bin/su /system/xbin/su <-- don't work
touch: usage: touch [-alm] [-t YYYYMMDD[.hhmmss]] <file>
1|[email protected]:/ # exit
1|[email protected]:/ $ exit
C:\adb>adb shell
[email protected]:/ $ su
[email protected]:/ # touch /sbin/su <-- tried single step
255|[email protected]:/ # < -- is that the problem?
----------------------------
please help me ....
thanks Mikel

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