1st scenario:
1. Reboot in bootloader mode
2. fastboot oem unlock-tinno
Thanks to this backdoor aka "forgotten" fastboot command, you can unlock the bootloader without wiping your data
3/pic.twitter.com/ngRjQ7stHn
French security researcher. Worst nightmare of Oneplus, Wiko, UIDAI, Kimbho and others. Not completely schizophrenic. Not related to USANetwork. DMs open.
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| Country | Code | For customers of |
|---|---|---|
| United States | 40404 | (any) |
| Canada | 21212 | (any) |
| United Kingdom | 86444 | Vodafone, Orange, 3, O2 |
| Brazil | 40404 | Nextel, TIM |
| Haiti | 40404 | Digicel, Voila |
| Ireland | 51210 | Vodafone, O2 |
| India | 53000 | Bharti Airtel, Videocon, Reliance |
| Indonesia | 89887 | AXIS, 3, Telkomsel, Indosat, XL Axiata |
| Italy | 4880804 | Wind |
| 3424486444 | Vodafone | |
| » See SMS short codes for other countries | ||
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1st scenario:
1. Reboot in bootloader mode
2. fastboot oem unlock-tinno
Thanks to this backdoor aka "forgotten" fastboot command, you can unlock the bootloader without wiping your data
3/pic.twitter.com/ngRjQ7stHn
As the phone bootloader is unlocked when a thief gets their hands on it, they can boot a custom recovery environment. From the recovery mode, they could use the adb command to access all the data on your device. This bypasses any PIN or password used to secure your device. 4/
2nd scenario:
1. Shutdown phone
2. Plug to computer
3. Wait charger screen
adb is enabled in charging mode
5/pic.twitter.com/SqxmUupUWy
In this 3rd scenario, let's assume as a hypothesis that the device is not protected. 1. Boot your device 2. "adb shell setprop persist.tinno.debug 1" 6/pic.twitter.com/iit5k5hPmy
This persist.tinno.debug system property is a backdoor which allow you to have a root shell
As a consequence, you can easily root your device (with bootloader locked). An attacker can also pull the content of sdcard to his computer (SMS, photos, videos,...). 7/
As a summary, I found 3 critical vulnerabilities in the Freddy phone: 1. adb is enabled in charging mode 2. "setprop persist.tinno.debug 1" is enabling adb root 3. "fastboot oem unlock-tinno" is unlocking the bootloader without wiping the device 8/
These 3 flaws combined allow an attacker with a physical access to steal your data even if your device is password protected. Let's be super clear, these flaws had been created and left by Tinno. This shows that Tinno doesn't care about security. 9/
So, next time you are buying a cheap phone like this one don't be fooled. You are putting intentionally all your data (SMS, photos, videos,...) in a device with 0 security. It's like buying a new house without a door... 10/10
cc @AndroidAuth @AndroidPolice @androidcentral @androidandme @Androidheadline @AndroidPolice @xdadevelopers @AndroidSPIN @TheHackersNews @verge @CNET @VICE @WIRED @JAMESWT_MHT @malwrhunterteam @hackerfantastic @LukasStefanko @twandroid @ANDROIDPIT @FigaroTech @virqdroid @LEXPRESS
You should blog all these findings to keep an interesting record, perhaps a wiki of secret codes and known no-fix? Easier to help consumers not get lost in the twitterverse.
Sounds like a good advise, I will!
I just need to find the time to set that properly
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