Hi there,
I have a Rockchip RK3188 Tablet with Android 4.2.2, which I need to root ON DEVICE. Actually, the device was already rooted (using a Laptop via the adb bridge), so I already have busybox installed and I have one of my own apps in /system/app. However I managed to delete the su program (yeah great!) and therefore don't have root access any more. I know I can easily root the device again if I connect it to my laptop again, but that is not possible, because the device is at my parent's place and I can't go over there any time soon.
Therefore I want to root the device just with an app. Actually I would only need to copy su to /system/xbin.
These are the things I already tried (without success):
Framaroot (doesn't work, because framaroot does not support Rockchip tablets)
Writing my own app, which contains su in the assets and using this su for temporary root
Using adb (on the device) for a local connection (adb connect localhost), because if I connect from my PC I automatically have root (doesn't work because Android 4.2.2 has increased security on adb)
Start telnetd via busybox and then execute my commands via nc (doesn't work, because I can't start telnetd in a way that it ends up with a root shell)
Any other ideas?
My last idea is, that I could maybe gain temporary root access with the app I already have in /system/app. Basically this would be similar to the Master Key Exploit, except that I do not have to fiddle around with the apk and instead install it normally. However I don't know how to continue from that point. I know, I have special permissions if I have an app in /system/app, but which permissions are that? And how can I use those permissions to make /system writeable (and copy my su file there)?
Thank you for your help,
Tobias
ToBe_HH said:
Hi there,
I have a Rockchip RK3188 Tablet with Android 4.2.2, which I need to root ON DEVICE. Actually, the device was already rooted (using a Laptop via the adb bridge), so I already have busybox installed and I have one of my own apps in /system/app. However I managed to delete the su program (yeah great!) and therefore don't have root access any more. I know I can easily root the device again if I connect it to my laptop again, but that is not possible, because the device is at my parent's place and I can't go over there any time soon.
Therefore I want to root the device just with an app. Actually I would only need to copy su to /system/xbin.
These are the things I already tried (without success):
Framaroot (doesn't work, because framaroot does not support Rockchip tablets)
Writing my own app, which contains su in the assets and using this su for temporary root
Using adb (on the device) for a local connection (adb connect localhost), because if I connect from my PC I automatically have root (doesn't work because Android 4.2.2 has increased security on adb)
Start telnetd via busybox and then execute my commands via nc (doesn't work, because I can't start telnetd in a way that it ends up with a root shell)
Any other ideas?
My last idea is, that I could maybe gain temporary root access with the app I already have in /system/app. Basically this would be similar to the Master Key Exploit, except that I do not have to fiddle around with the apk and instead install it normally. However I don't know how to continue from that point. I know, I have special permissions if I have an app in /system/app, but which permissions are that? And how can I use those permissions to make /system writeable (and copy my su file there)?
Thank you for your help,
Tobias
Click to expand...
Click to collapse
are you rooted check with root checker if yes(as you alredy said)
install super su or super user to gain root acces controls
but iam not sure from your question you are rooted or not or are you trying to root
P.S deleting super su will not unroot you
sangalaxy said:
are you rooted check with root checker if yes(as you alredy said)
install super su or super user to gain root acces controls
but iam not sure from your question you are rooted or not or are you trying to root
P.S deleting super su will not unroot you
Click to expand...
Click to collapse
Root checker says: "Sorry! This device does not have proper root access."
Right now, I am NOT rooted. So the device WAS rooted and then /system/xbin/su was deleted. Meaning: everything else is in place (SuperUser, Busybox, etc.) but I cannot execute anything as root, because I cannot switch the user to root (what su does). Although I am not really unrooted, I cannot do anything any more. So basically I would like to re-root my device.
The goal is to get fully rooted again.
ToBe_HH said:
Root checker says: "Sorry! This device does not have proper root access."
Right now, I am NOT rooted. So the device WAS rooted and then /system/xbin/su was deleted. Meaning: everything else is in place (SuperUser, Busybox, etc.) but I cannot execute anything as root, because I cannot switch the user to root (what su does). Although I am not really unrooted, I cannot do anything any more. So basically I would like to re-root my device.
The goal is to get fully rooted again.
Click to expand...
Click to collapse
I don't think you can root without any pc
If your phone has recovery just flash the root files :thumbup:
Sent from my Xperia Live with Walkman using xda app-developers app
ToBe_HH said:
Root checker says: "Sorry! This device does not have proper root access."
Right now, I am NOT rooted. So the device WAS rooted and then /system/xbin/su was deleted. Meaning: everything else is in place (SuperUser, Busybox, etc.) but I cannot execute anything as root, because I cannot switch the user to root (what su does). Although I am not really unrooted, I cannot do anything any more. So basically I would like to re-root my device.
The goal is to get fully rooted again.
Click to expand...
Click to collapse
Have you tried looking in /system/bin/su instead of /system/xbin/su
Related
I installed Z4 mod and ran it and it says my g-tab is rooted. I have read that custom ROMS are pre-rooted. In my limited linux experience - being root gives you total control over the machine. I ran Terminal Emulator and cd / to get me to the top of the file structure. I tried to mkdir test and I was denied because the file system is read only. Next I went into the system folder because a lot of stuff in there looks familiar. I again tried mkdir test and was denied because the file system is read only. It would seem that to be root I would need a password and Z4 didn't offer to give me one or let me set it. Thinking further, I wonder if the file system is mounted for read only and that is why I can't create a new directory. When I am running the rom (Vegan) I can write there (understanding that I am writing to the sdcard that is mounted - presumably with RW access. So, what is all this rooting talk about then? What is the purpose of being root if you still do not have access to the file system?
You need Superuser.apk, as well. Think of Superuser as similar to Windows UAC, and rooting as making yourself an administrator. Even though you have root (admin) access, UAC (Supeuser.apk) still needs to let you through.
You also need "root aware" apps. Perfect example is Titanium Backup and that's usually my "litmus test" for verifying if I really have root or not on a device.
yup, in my limited rooting experience (droid1 and gtablet), after the process, there was always a new icon in the app tray entitled "superuser". i didnt have to install it separately, it showed up after the rooting process. if you don't have the superuser app, im betting the root process was unsuccessful.
my memory tells me i had some problems with z4root rooting my tablet, and i had to do it a few times before it actually worked. that was back in december tho, so i dont know if the current version of z4 is different than the one i used, and if so, if kinks were worked out...
so yeah, i probably helped none.
I always though z4root and Superuser were kind of a package deal.
I use them on my Cowon D3, as Cowon completely locks down their recovery process. boo to that.
rodzero,
With z4root you install it first. Then, you install a file manager program like "Root
Explorer" and when it comes up you click to "Allow" it. After that, you can go in
through Root Explorer and create and change R/O to R/W as needed. Same same
with Titanium Backup, once you have "allowed" it you can do what you need
to with the program.
Rev
More Investigation.
Thanks for the fast responses! I do have Superuser installed and it pops up from time to time when an app wants su access. Using terminal emulator, I worked my way into and what do I find but su! I ran su and got was granted su rights in the terminal. I felt pretty smug so I headed into the etc folder thinking I would make a simple change to the hosts file just to see if I could do it. I'm used to using nano in Ubuntu but no nano here. I tried vi (which I really don't know how to use) and I got some strange display but I don't think it was an editor. So, for the sake of closing the loop - if I wanted to edit the hosts file and add a new host - how would I do it. The Terminal Emulator now seems to be in the list to be granted su whenever I type it in. I know how to move around the file system. What kind of text editor would I invoke to actually alter the file? OK.... I went and downloaded TED and worked my way back to the hosts file, added a line but TED doesn't have su rights to save the file. So it looks like su exists but I don't see how to run an app in su mode except for terminal where I can invoke it by a text command. What's the missing piece to get TED to ask for su access?
Just a guess, but TED need to ask for elevation of privileges. It's probably an app issue.
I recently won this developer tablet and I can't seem to get on-device root access. It came with su binaries installed. (very old ones but I updated it) It also has an unsecured kernel because ADB always runs as root. However I installed superuser and it can't get root access and when other apps attempt root access something seems to be denying access before the superuser prompt is even able to come up. Just curious if anyone has any ideas??
JBO1018 said:
I recently won this developer tablet and I can't seem to get on-device root access. It came with su binaries installed. (very old ones but I updated it) It also has an unsecured kernel because ADB always runs as root. However I installed superuser and it can't get root access and when other apps attempt root access something seems to be denying access before the superuser prompt is even able to come up. Just curious if anyone has any ideas??
Click to expand...
Click to collapse
This may seem like a stupid suggestion but I suppose you could try uninstalling the superuser app and use Chainfire's Super SU app to see if that might make any difference.
Tried that too lol. I was even able to go into old su app and toggle permission for super su to allowed and it still said fail when it tried to update binary. Thanks for the suggestion though. It seems to me the problem is that the chown and chmod commands are not sticking on the su binary. They appear to work but the actual ownership and permissions of the file don't change. Even when I do adb remount first.
I figured it out. For some reason I had to put the su binary in /system/bin instead of xbin. Which is strange because all my other device it went in xbin. Also the reason the chmod and chown commands were not working properly is because I forgot to do adb remount. (duh!) In case anyone is wondering this thing is a beast. I just wish I could figure out a way to get my Gameloft games to work. I (mainly modern combat 3 and nova3)
JBO1018 said:
I figured it out. For some reason I had to put the su binary in /system/bin instead of xbin. Which is strange because all my other device it went in xbin. Also the reason the chmod and chown commands were not working properly is because I forgot to do adb remount. (duh!) In case anyone is wondering this thing is a beast. I just wish I could figure out a way to get my Gameloft games to work. I (mainly modern combat 3 and nova3)
Click to expand...
Click to collapse
One way to get your games to work would be try side loading the Modern Combat 3 and Nova 3 APK's onto the device and installing them manually that way. Another way if that doesn't work is you could try modifying your build.prop and changing your product id to match the galaxy nexus that way the play store will think your on a galaxy nexus and it should say that the games are compatible then.
JBO1018 said:
I figured it out. For some reason I had to put the su binary in /system/bin instead of xbin. Which is strange because all my other device it went in xbin. Also the reason the chmod and chown commands were not working properly is because I forgot to do adb remount. (duh!) In case anyone is wondering this thing is a beast. I just wish I could figure out a way to get my Gameloft games to work. I (mainly modern combat 3 and nova3)
Click to expand...
Click to collapse
I know this is an older post but I'm at the same point where I can't figure out how to allow superuser access. I'm using the 8064 for research and I need the root access but can't seem to figure out how to update the SU. Any tips?
mcforan said:
I know this is an older post but I'm at the same point where I can't figure out how to allow superuser access. I'm using the 8064 for research and I need the root access but can't seem to figure out how to update the SU. Any tips?
Click to expand...
Click to collapse
Do you have the Superuser.apk app installed along with the SU binary in the correct place /system/bin as mentioned by JBO1018? If you already had working root access before on the device and just need to update the SU binary you can open the Superuser app, then go under the info tab and tap on the SU binary version number this should then check for updates and then ask you if you want to install any found updates.
shimp208 said:
Do you have the Superuser.apk app installed along with the SU binary in the correct place /system/bin as mentioned by JBO1018? If you already had working root access before on the device and just need to update the SU binary you can open the Superuser app, then go under the info tab and tap on the SU binary version number this should then check for updates and then ask you if you want to install any found updates.
Click to expand...
Click to collapse
I have both the Superuser.apk and SU binary in the right place. Each time I open up an app that needs root access a toast message pops saying that the app has been denied Superuser permissions. I tried restarting both apps but its not working.
mcforan said:
I have both the Superuser.apk and SU binary in the right place. Each time I open up an app that needs root access a toast message pops saying that the app has been denied Superuser permissions. I tried restarting both apps but its not working.
Click to expand...
Click to collapse
Try going into the Superuser app and under settings and then security the default behavior is set to prompt not deny.
Sent from my SCH-I535 using xda premium
join have a tablet TIR 8960 is preloaded with windows rt, tablet says about the problems of the system,
Hello,
I rooted my 8.9" and lose root after i installed busybox. Right now, i cannot install SU binary. I tried factory reset, unroot, and reroot without any success. Is there a way i can install SU binary manually?
Thanks.
anyone???
It appears that I will have to live with it.
Thanks.
auky said:
It appears that I will have to live with it.
Thanks.
Click to expand...
Click to collapse
I don't know what or how you did what you did. You won't get many answers without providing specific examples.
I for one have NEVER heard of ANYONE losing root from BusyBox, but everyone I know, including myself, uses BusyBox Pro v. 10.5 currently. Most of the people I know also use SuperSU from Chainfire. Generically saying tha some busybox installation messed with some generic root or SU installation/binary, really does not give anyone much to go on.
You can apply the root exploit again. There is no issue with that, or you can use adb to copy the su binary over, set permissions & ownership & the cp it to the correct directory.
At any rate, there are too many possibilities & possible solutions depending on what you did & how you did it.
GSLEON3 said:
I don't know what or how you did what you did. You won't get many answers without providing specific examples.
I for one have NEVER heard of ANYONE losing root from BusyBox, but everyone I know, including myself, uses BusyBox Pro v. 10.5 currently. Most of the people I know also use SuperSU from Chainfire. Generically saying tha some busybox installation messed with some generic root or SU installation/binary, really does not give anyone much to go on.
You can apply the root exploit again. There is no issue with that, or you can use adb to copy the su binary over, set permissions & ownership & the cp it to the correct directory.
At any rate, there are too many possibilities & possible solutions depending on what you did & how you did it.
Click to expand...
Click to collapse
Hi GSLEON3,
You have given me hope. Thank you for the respond. I rooted my HDX 8.9 with no issue. Without knowing if I have busybox, I downloaded and installed the attached busybox apk. After that, I lose root. When I open SuperSU, I was asked to install SU binary, but when I click "Normal", the SU binary installation will fail. I tried unrooting and rerooting (with Bin4ry method as well as manual) without any success. Error messages such as "must be SUID to work properly" when I tried unroot and reroot. Guess i lose write ability. I will really appreciate it if you can tell me how to adb to copy SU binary or help me get root back.
Thanks.
As title, I'm trying to root a development board running 4.2.2. I do have root access and put busybox and su, but my problem is that whenever I start apps that require root access, superuser never gives me prompt asking whether root access is allow (yes, my setting in Superuser is to prompt for every apps that require root), as a result, the app would not run reporting that my device is not rooted. As an example, when I trying to run droidvncserver, it would tell me "could not start server", but if I start it as root on a shell, it would run and start server, this leads me to think that droidvncserver is not requesting root access or Superuser does not know that droidvncserver needs root access. I'm pretty sure I'm missing something in my system, but what is it. All this works on a rooted phone, but not on the development board. I've read through some of the rooting script for other phones, mostly include remounting /system as rw and put busybox and su onto the system, and that's what I've done on the board, but there's just no connection between those root-require apps and superuser. Anyone knows what I'm doing wrong/missing?
After rooting we instal busybox and SuperSU (or Superuser) and avail the benefits of rooting. When we unroot through SuperSU, is it possible that 'su' still remains inside '/system' folder? I came across a strange phenomenon : I rooted my Celkon Q 500 ( by Root Genius or One-click method or something else, I do not remember) and installed many root apps. After somedays, I decided to unroot, I uninstalled super su, busybox. Then, I tried to root it again. But, I noticed that one root checker says ur device is rooted(specifically through Root Genius PC software I got the message rooted and pressed the 'unroot' button, but it said failed), 2nd root checker says it is non-rooted, 3rd one says it has root access through ADB. I checked 'su' is present in some folder inside '/system', which could not be deleted , because I think, I do not have RW privilege. I had tried many method to root it again, but all failed. When I open Supersu, it throws an immediate message that 'su binary' needs to be updated and when I try it fails everytime. Can anyone meke me understand, what is the real proble.? Celkon Q 500 is Broadcom chip based, running android 4.4.2. Also I found One message in the root checker that "SELinux enforced".
Eversmile23 said:
After rooting we instal busybox and SuperSU (or Superuser) and avail the benefits of rooting. When we unroot through SuperSU, is it possible that 'su' still remains inside '/system' folder? I came across a strange phenomenon : I rooted my Celkon Q 500 ( by Root Genius or One-click method or something else, I do not remember) and installed many root apps. After somedays, I decided to unroot, I uninstalled super su, busybox. Then, I tried to root it again. But, I noticed that one root checker says ur device is rooted(specifically through Root Genius PC software I got the message rooted and pressed the 'unroot' button, but it said failed), 2nd root checker says it is non-rooted, 3rd one says it has root access through ADB. I checked 'su' is present in some folder inside '/system', which could not be deleted , because I think, I do not have RW privilege. I had tried many method to root it again, but all failed. When I open Supersu, it throws an immediate message that 'su binary' needs to be updated and when I try it fails everytime. Can anyone meke me understand, what is the real proble.? Celkon Q 500 is Broadcom chip based, running android 4.4.2. Also I found One message in the root checker that "SELinux enforced".
Click to expand...
Click to collapse
reinstall super su from play store go to settings in super su app and unroot there
selinux enforced means that your kernel is not permissive. has nothing to do with root