Windows 10: Adb, USB debugging, and RSA Keys

/u/masiv_o · Sep 13, 2020

Hi!

2 days ago, my phone's screen passed away, so I coudn't controll the screen or even see it, luckly I had USB Debugging enabled and my computer saved as a safe PC (before all of this I clicked on "remember this PC" to prevent this things), well, I could access to the phone and control it, but, yesterday, my computer adb RSA key changed, this is a big problem, because I'm not able to connect again my phone and my PC; here is the question to this forum: There is anyway to see like an "historial" of my adb RSA keys? (I tried using recovery data apps to pull data from my disk but the only file I found was the same as what I have, moddified 14:18)

If the answer is yes, how?

Help me, I'm a little bit stressed, I have almost all my data but for other reasons I have to keep using my phone :|

submitted by /u/masiv_o
[link] [comments]

:)

Mahdi Rafatjah · Sep 13, 2020

Cant connect to Android phone using adb (adb device unauthorized)

I can't connect my nexus 5 using adb and to laptop (windows 10 B:10586)

Working on it like more that 10 hours.

Tested lots of google adb driver, even adb-setup-1.4.3 (adb auto setup by xda)

Revoking usd debugginh. also not worked.

adb devices
List of devices attached
0625a5ba003b7114 unauthorized

adb usb
error: device unauthorized. Please check the confirmation dialog on your device.

adb kill-server
adb usb
* daemon not running. starting it now on port 5037 *
* daemon started successfully *
error: device unauthorized.
This adbd's $ADB_VENDOR_KEYS is not set; try 'adb kill-server' if that seems wrong.
Otherwise check for a confirmation dialog on your device.
Click to expand...

Even removed .android from %userprofile%

It is working on other laptop using auto adb setup.

/data/adb is empty.

No confirm dialog will appear.

Tested using different usb connection method (charging,mtp,ptp,midi)

Nexus 5 Android :6.0.1 , Rooted , Unlock bootloader ,Build Number:MMB29v, Baseband version M8974A-2.0.50.2.28

Already tested:

ADB Android Device Unauthorized
How to solve ADB device unauthorized in Android ADB host device?
"adb devices" shows device as "unauthorized". How can I fix this?
[Q] ADB error: device unauthorized and device offline
Device Unauthorized | Treehouse Community
Android 4.4.2 Secure USB Debugging Bypass
and more
Click to expand...

Adding a guess

I guess adb rsa key signature is not cleaned well (from phone or windows) otherwise phone rsa confirmation request is working using different laptop.

Brink · Sep 13, 2020

RSA Keys Generated by Infineon TPMs are Insecure

Lenovo Security Advisory: LEN-15552

Potential Impact: RSA keys generated by the Infineon TPM using certain firmware levels are insecure

Severity: Varies; None to High

Scope of Impact: Industry-Wide

CVE Identifier: CVE-2017-15361

Summary Description:

A vulnerability was identified in the RSA key generation method used by Trusted Platform Modules (TPMs) manufactured by Infineon and contained in some Lenovo products. RSA public keys generated by the Infineon TPM for use by certain software programs should be considered insecure. No TPMs from other manufacturers are affected.

Only software that uses RSA keys generated by the TPM is affected by this vulnerability. No Lenovo-developed software uses the TPM for this purpose. Please see the Infineon advisory located here for more details.

The Trusted Platform Module (TPM) is a microcontroller on the system board used to securely store artifacts used to authenticate the platform, such as passwords, certificates or encryption keys, or measurements to ensure your system is trustworthy.

Mitigation Strategy for Customers (what you should do to protect yourself):

The sequence of steps required to mitigate this issue depends on the application and/or operating of your system. Follow the mitigation instructions provided by your software supplier to avoid data loss when mitigating this issue:

For Microsoft users, follow the procedure located here. Be sure to install the Microsoft patch first in order to determine if your system is affected. If it is affected, then install the TPM Firmware update by following the link in the Product Impact section of this advisory. If you install the TPM firmware update first, the Microsoft tool included in the patch that detects if your system is affected will give incorrect results. For Chromebook users, see the information located here.

Lenovo does not have information for other software that may use the TPM (WinMagic, Linux applications, other Windows applications, etc). To determine what steps should be taken to mitigate this issue (if any) without data loss, you should contact your software supplier.

Some systems in the affected list have 2 TPM’s to allow the user to select between TPM 1.2 and TPM 2.0 (Only one of these TPMs can be active). In the case where the Infineon TPM is not the active TPM, the checking and update tools will indicate the system is not affected. If you change the active TPM at some future date, Lenovo recommends that you re-run the checking and update tools to ensure that the TPM firmware is updated in your new configuration.

Even if you are not currently using any software that uses the TPM, Lenovo recommends that you apply the update contained in the link for your product to prevent generation of weakened keys if you install software that uses the TPM in the future.

Product Impact:
Lenovo is urgently working on qualifying and applying the fixes provided by Infineon on supported systems. Please continue to refer to this advisory to identify fixes as they are posted for your systems.
Click to expand...

Read more: RSA Keys Generated by Infineon TPMs are Insecure

akshay tripathi · Sep 13, 2020

Adb drivers just won't work..

Hello thank you so much for your reply.. i have tried each and every step mentioned in the post.. And doesn't work for me .. And as i said i have adb driver issue or maybe something is just breaking my usb .. because everything works perfect with my usb
ports except the tasks related to adb

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