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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 12 Nov 2017

      <Thread> CM Browser is a very popular application (50M - 100M downloads) published by @CheetahMobile.pic.twitter.com/hkwC4spdQt

      MalwareHunterTeam, JAMESWT and Lukas Stefanko
      10 replies 38 retweets 71 likes
      Show this thread
    2. Elliot Alderson‏ @fs0c131y 12 Nov 2017

      In the description it said "#1 antivirus engine (rated by AV-TEST)" which is a lie. The AV-TEST best android security 2016 award had been given to @Bitdefender and @Sophos.pic.twitter.com/Rvly1bD4l6

      1 reply 1 retweet 14 likes
      Show this thread
    3. Elliot Alderson‏ @fs0c131y 12 Nov 2017

      @CheetahMobile Security Master is in their best antivirus for #Android list but it's not the same app and not #1: http://av-test.org/en/antivirus/mobile-devices/android/ …pic.twitter.com/l30gzW9n7w

      1 reply 2 retweets 9 likes
      Show this thread
    4. Elliot Alderson‏ @fs0c131y 12 Nov 2017

      Virus Total score of the last CM Browser APK is 1/60. Detected as A.L.Rog.RedTubeSex by Alibaba 🤔pic.twitter.com/iV53Zgcsfq

      1 reply 2 retweets 11 likes
      Show this thread
    5. Elliot Alderson‏ @fs0c131y 12 Nov 2017

      Description said "Ad Blocker: Block annoying pop-ups and ads, enjoy clear and clean browsing" but in the service list you can find nativesdk.ad.common.service.AdPreloadServicepic.twitter.com/CcwgtIBWbD

      1 reply 4 retweets 12 likes
      Show this thread
      Elliot Alderson‏ @fs0c131y 12 Nov 2017

      In the "Interesting Strings" section we can find a lot of http address, that's interesting. We will check that laterpic.twitter.com/WvUI5QaeMB

      9:35 AM - 12 Nov 2017
      • 6 Likes
      • Shiva Saran Ḿ̴̴̷̷̛̤̪̥͑͆̑̽̕͘͘a̗͉̗͈ͬ͒́ͫ̕r̵̭͎̞͕͘͡͏k̭̪͆̈́̃̓ͧ͏̧̛̕͘͠ The Gender Boonary⚧🏳️‍🌈 JAMESWT spooky 👻 Rick C137
      1 reply 0 retweets 6 likes
        1. New conversation
        2. Elliot Alderson‏ @fs0c131y 12 Nov 2017

          First thing you saw when you open the AndroidManifest, the app is asking 3 permissions which are granted only for system app. Why a web browser need to mount/unmount my file system?pic.twitter.com/DDKMmIUkp8

          1 reply 2 retweets 9 likes
          Show this thread
        3. Elliot Alderson‏ @fs0c131y 12 Nov 2017

          Package name of the app is com.ksmobile.cb but the code is located in com.ijinshan.browser. Ijinshan, http://ijinshan.com , is another company which seems working/related for/to @CheetahMobile.pic.twitter.com/m96jMlfROY

          1 reply 0 retweets 4 likes
          Show this thread
        4. Elliot Alderson‏ @fs0c131y 12 Nov 2017

          When you click the product tab in http://ijinshan.com  it redirect to the product list of @CheetahMobile, http://cn.cmcm.com/products.html . In the list you can see the "Jinshan battery doctor" app. ijinshan seems 2 differents legal company but same people 🤔

          1 reply 0 retweets 3 likes
          Show this thread
        5. Elliot Alderson‏ @fs0c131y 12 Nov 2017

          @CheetahMobile Browser is listening to PACKAGE_ADDED, PACKAGE_REMOVED, PACKAGE_CHANGED and PACKAGE_REPLACED intents 😡pic.twitter.com/PS3KGOH0m5

          1 reply 0 retweets 4 likes
          Show this thread
        6. Elliot Alderson‏ @fs0c131y 12 Nov 2017

          They also listen to http://android.hardware.action.NEW _PICTURE...pic.twitter.com/zU25x2zVok

          1 reply 0 retweets 4 likes
          Show this thread
        7. Elliot Alderson‏ @fs0c131y 12 Nov 2017

          Another receiver to PACKAGE_ADDED and PACKAGE_REMOVED 🤦‍♂️pic.twitter.com/ZchhvJmok6

          1 reply 0 retweets 3 likes
          Show this thread
        8. Elliot Alderson‏ @fs0c131y 12 Nov 2017

          The third receiver to PACKAGE_ADDEDpic.twitter.com/3ePEr0SYwN

          1 reply 0 retweets 3 likes
          Show this thread
        9. Elliot Alderson‏ @fs0c131y 12 Nov 2017

          And fourth...pic.twitter.com/70RYNnmxXC

          1 reply 0 retweets 4 likes
          Show this thread
        10. Elliot Alderson‏ @fs0c131y 12 Nov 2017

          I'll pause my investigation for today. Here the summary for now: * They lie in the description * VT detected it as a Rog.RedtubeSex * This Adblock browser load their own ad * They used multiple SDKs * They listen to the apps movement (install,...)

          2 replies 3 retweets 15 likes
          Show this thread
        11. Elliot Alderson‏ @fs0c131y 13 Nov 2017

          In http://Favorites.java  there is a list a porn websites which is added to a HashMap in the constructor 🤔pic.twitter.com/drkgNnqoxc

          1 reply 1 retweet 11 likes
          Show this thread
        12. Elliot Alderson‏ @fs0c131y 13 Nov 2017

          Even if you delete your browser history, you can find the last visit url in clear in a shared preferences filepic.twitter.com/n58ZwRPa30

          1 reply 2 retweets 6 likes
          Show this thread
        13. Elliot Alderson‏ @fs0c131y 13 Nov 2017

          If you visit #YouTube, #Pornhub, #xvideos or #xnxx, CM browser will inject their cmbFloatVideo js script in the webpagepic.twitter.com/3J4N3wg6N3

          2 replies 1 retweet 13 likes
          Show this thread
        14. Elliot Alderson‏ @fs0c131y 13 Nov 2017

          BIG PRIVACY ISSUE: CM Browser is storing your browser history in clear in browser.db EVEN IN INCOGNITO MODE 😡pic.twitter.com/lWukVAoFxv

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

          The AppExistTrackingReceiver is listening to a multiple intent: USER_PRESENT, CONNECTIVITY_CHANGE,... On the onReceive method it will start the KBrowserService if the device is connected to the network and the last upload is older than 6 hourspic.twitter.com/FAFDA1UPZK

          2 replies 2 retweets 5 likes
          Show this thread
        16. Elliot Alderson‏ @fs0c131y 13 Nov 2017

          On the OnCreate method of KBrowserService, it register a BroadcastReceiver which listen to SCREEN_ON and SCREEN_OFF intents...I saw that in a lot of malware...pic.twitter.com/mgv2fEsVbn

          1 reply 0 retweets 5 likes
          Show this thread
        17. Elliot Alderson‏ @fs0c131y 13 Nov 2017

          When SCREEN_OFF is received the AppLockBroadCastReceiver check if the phone is locked and will update their content provider with is_screen_off to truepic.twitter.com/6g41zlsEYw

          1 reply 0 retweets 5 likes
          Show this thread
        18. Elliot Alderson‏ @fs0c131y 13 Nov 2017

          I'm done with this app. There is more to find for sure. Feel free to check the decompiled source http://github.com/fs0c131y/CMBrowser … and share your findings!

          2 replies 3 retweets 15 likes
          Show this thread
        19. Elliot Alderson‏ @fs0c131y 13 Nov 2017

          To sumarize: Stay away of this app! It clearly an invasive application which listen for too much things on the user device. They do the opposite of the app description and don't protect your data

          4 replies 10 retweets 23 likes
          Show this thread
        20. Elliot Alderson‏ @fs0c131y 13 Nov 2017

          I'm ready for my next challenge. If you an app name in mind, feel free to send here or by DMs and I will look into it

          7 replies 1 retweet 15 likes
          Show this thread
        21. End of conversation

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