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fs0c131y's profile
Elliot Alderson
Elliot Alderson
Elliot Alderson
@fs0c131y

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Elliot Alderson

@fs0c131y

French security researcher. Worst nightmare of Oneplus, Wiko, UIDAI, Kimbho and others. Not completely schizophrenic. Not related to USANetwork. DMs open.

Joined June 2015

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    1. Elliot Alderson‏ @fs0c131y 13 Nov 2017

      <Thread> Hey @OnePlus! I don't think this EngineerMode APK must be in an user build...🤦‍♂️ This app is a system app made by @Qualcomm and customised by @OnePlus. It's used by the operator in the factory to test the devices.pic.twitter.com/lCV5euYiO6

      Mobile Security, JAMESWT, MalwareHunterTeam and 3 others
      1. Mobile Security @mobilesecurity_

      2. JAMESWT @JAMESWT_MHT

      3. MalwareHunterTeam @malwrhunterteam

      4. The Verge @verge

      5. WIRED @WIRED

      6. Android Central @androidcentral

      66 replies 729 retweets 899 likes
      Show this thread
      Elliot Alderson‏ @fs0c131y 13 Nov 2017

      If you have an OnePlus device, I'm pretty sure you have this app pre-installed. To check open Settings -> Apps -> Menu -> Show system apps and search EngineerMode in the app list to check

      8:53 AM - 13 Nov 2017
      • 18 Retweets
      • 52 Likes
      • Mohammed Adam Malcolm Jones Saad belle au bois dormant Anudeep Royal Roxibus Amper Sine Abhishek Damle edelans
      11 replies 18 retweets 52 likes
        1. New conversation
        2. Elliot Alderson‏ @fs0c131y 13 Nov 2017

          With telephony secret code you can access to manual tests like GPS test, root status test as stated in this article https://www.xda-developers.com/oneplus-hardware-diagnostic-tests … pointed by @AleGrechi . But can do better...pic.twitter.com/7gTaZ848Gp

          1 reply 16 retweets 50 likes
          Show this thread
        3. Elliot Alderson‏ @fs0c131y 13 Nov 2017

          You can access to the "main" activity by sending this command: adb shell am start http://com.android .engineeringmode/.EngineeringMode You will have access to everything, not just the manual test.pic.twitter.com/UkwXPPmPDV

          1 reply 17 retweets 56 likes
          Show this thread
        4. Elliot Alderson‏ @fs0c131y 13 Nov 2017

          Having access to all these functions is a real issue. Combined with this attack, http://researchcenter.paloaltonetworks.com/2017/09/unit42-android-toast-overlay-attack-cloak-and-dagger-with-no-permissions …, a malicious app can do a lot of thing.

          1 reply 13 retweets 40 likes
          Show this thread
        5. Elliot Alderson‏ @fs0c131y 13 Nov 2017

          I will find time to make a POC. But it's not the biggest issue with this app.

          1 reply 1 retweet 21 likes
          Show this thread
        6. Elliot Alderson‏ @fs0c131y 13 Nov 2017

          The DiagEnabled, which is a @Qualcomm made activity, is the best class in this EngineerMode APK. Check the methods in this activity: escalatedUp(boolean, string) sounds like a cool thing no 😀?pic.twitter.com/iQFfam6eg6

          1 reply 4 retweets 38 likes
          Show this thread
        7. Elliot Alderson‏ @fs0c131y 13 Nov 2017

          In the onCreate method if the intent is not null the escalatedUp method is called with the parameter enable=true and password=getIntent().getStringExtra("code"). Do you see where I'm going?pic.twitter.com/oa1i1NdlpU

          1 reply 2 retweets 33 likes
          Show this thread
        8. Elliot Alderson‏ @fs0c131y 13 Nov 2017

          The escalatedUp method is calling Privilege.escalate(password) and if the result is true, it set the system property persist.sys.adbroot and oem.selinux.reload_policy to 1pic.twitter.com/92LeBfDPAv

          4 replies 16 retweets 43 likes
          Show this thread
        9. Elliot Alderson‏ @fs0c131y 13 Nov 2017

          So yes, if you send the command: adb shell am start -n http://com.android .engineeringmode/.qualcomm.DiagEnabled --es "code" "password" with the correct code you can become root!

          5 replies 28 retweets 75 likes
          Show this thread
        10. Elliot Alderson‏ @fs0c131y 13 Nov 2017

          Here the Privilege class. Check the name of native library used to check the code: door... Ladies and Gentlemen please say hi to the backdoor made in @Qualcommpic.twitter.com/ns0JI1nvWD

          3 replies 83 retweets 155 likes
          Show this thread
        11. Elliot Alderson‏ @fs0c131y 13 Nov 2017

          This lib is located in /system/lib/libdoor.so or /system/lib64/libdoor.so. You can find the sample here: https://www.virustotal.com/#/file/3e6df251ad4fe115563b51b302fec2d7836e14dd28ae06e8b41c1939d4bca33d …

          1 reply 5 retweets 33 likes
          Show this thread
        12. Elliot Alderson‏ @fs0c131y 13 Nov 2017

          This is the interesting strings of the lib. After a first read we can see that libcrypto is used and the key and the password are backup in /data/backup/fpwd and /data/backup/fkeypic.twitter.com/Y0JbAk3Fp7

          1 reply 3 retweets 25 likes
          Show this thread
        13. Elliot Alderson‏ @fs0c131y 13 Nov 2017

          This is the code responsible of the password verification. 1st it check the length, calculate the hash and compare it to the correct one.pic.twitter.com/efldDJO0Qu

          2 replies 4 retweets 26 likes
          Show this thread
        14. Elliot Alderson‏ @fs0c131y 13 Nov 2017

          Unfortunately, I didn't find the password, so if some you are skilled in reversing native lib, your help is very welcome!

          2 replies 2 retweets 27 likes
          Show this thread
        15. Elliot Alderson‏ @fs0c131y 13 Nov 2017

          If the verification is passed the password hash is stored in /data/backup/fpwdpic.twitter.com/lkcWlr7Wfb

          1 reply 3 retweets 19 likes
          Show this thread
        16. Elliot Alderson‏ @fs0c131y 13 Nov 2017

          and the key is made from different build properties like http://ro.build  .type, http://ro.build  .user,... and stored in /data/backup/fkeypic.twitter.com/NMto5BY7zp

          1 reply 2 retweets 21 likes
          Show this thread
        17. Elliot Alderson‏ @fs0c131y 13 Nov 2017

          Using @fridadotre and the script attached, I managed to bypass the escalate and isEscalated methods and become rootpic.twitter.com/oXGGEIqFad

          5 replies 12 retweets 60 likes
          Show this thread
        18. Elliot Alderson‏ @fs0c131y 13 Nov 2017

          Here the source code of the EngineerMode apk: https://github.com/fs0c131y/EngineerMode …. Feel free to dig on your own and share your findings!

          3 replies 24 retweets 79 likes
          Show this thread
        19. Elliot Alderson‏ @fs0c131y 13 Nov 2017

          cc @AndroidAuth @AndroidPolice @androidandme @Androidheadline @AndroidPolice @xdadevelopers @AndroidSPIN @Gadgets360 @TheHackersNews you have a subject here to write an article. It's not normal to have this kind of backdoor in an end user product...

          4 replies 12 retweets 66 likes
          Show this thread
        20. Elliot Alderson‏ @fs0c131y 13 Nov 2017

          Any comments from @getpeid @OnePlus or @Qualcomm?

          2 replies 9 retweets 65 likes
          Show this thread
        21. Elliot Alderson‏ @fs0c131y 13 Nov 2017

          EngineerMode APK is not the only interesting app left by @Oneplus. More thread to come :)

          2 replies 6 retweets 47 likes
          Show this thread
        22. Elliot Alderson‏ @fs0c131y 13 Nov 2017

          Awesome! Thanks to @insitusec and the @NowSecureMobile team, we have the password! It's now possible to root an @Oneplus device with a simple intentpic.twitter.com/gN0awYijBv

          14 replies 115 retweets 231 likes
          Show this thread
        23. Elliot Alderson‏ @fs0c131y 13 Nov 2017

          I will publish an application on the PlayStore to root your @OnePlus device in the next hours

          27 replies 28 retweets 163 likes
          Show this thread
        24. Elliot Alderson‏ @fs0c131y 13 Nov 2017

          Difficulty to install #SuperSu: 0! Everything is already preinstalled 🤔. The OnePlus root application is coming soon :)

          15 replies 29 retweets 137 likes
          Show this thread
        25. Elliot Alderson‏ @fs0c131y 13 Nov 2017

          Nice report @AndroidPolicehttp://www.androidpolice.com/2017/11/13/oneplus-left-backdoor-devices-capable-root-access/ …

          5 replies 41 retweets 106 likes
          Show this thread
        26. Elliot Alderson‏ @fs0c131y 13 Nov 2017

          The best thing in this story is the password. It's angela (see the reference?). This backdoor is here intentionally. When the fiction become a reality. Good luck @getpeid, you will need a very good explanation. cc @whoismrrobotpic.twitter.com/IJgsu6hCEc

          12 replies 84 retweets 216 likes
          Show this thread
        27. Elliot Alderson‏ @fs0c131y 14 Nov 2017

          My Twitter at the moment. Thank you all for the impact you give to this story!pic.twitter.com/vcKlSrHwnT

          6 replies 9 retweets 151 likes
          Show this thread
        28. Elliot Alderson‏ @fs0c131y 14 Nov 2017

          Once again this app is a system app made by @Qualcomm. So possibly a lot of @Qualcomm based phones are affected. Can you open Settings -> Apps -> Menu -> Show system apps and search EngineerMode in the list to check? If you find the app reply to this tweet with your device model

          91 replies 34 retweets 87 likes
          Show this thread
        29. Elliot Alderson‏ @fs0c131y 14 Nov 2017

          Thanks to you, I have now a sample of the EngineerMode apk from @Asus Zenfone, @miuirom, @Redmi 3s, @OnePlus 5T. Expect more fun!

          13 replies 16 retweets 57 likes
          Show this thread
        30. Elliot Alderson‏ @fs0c131y 14 Nov 2017

          I'm still waiting more samples to confirm but yes EngineerMode is installed on @OnePlus 5T. The DiagEnabled activity is here, so the backdoor too :)

          8 replies 6 retweets 22 likes
          Show this thread
        31. Elliot Alderson‏ @fs0c131y 14 Nov 2017

          Thanks to the awesome @AdrianoDiLuzio, it's pretty easy to install supersu!pic.twitter.com/TKjcrol6Js

          13 replies 17 retweets 57 likes
          Show this thread
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