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dscanner - Drozer based post-build dynamic vulnerability scanner command
* New command `dscanner`, enables one to scan signed APKs with Drozer * Drozer is a dynamic vulnerability scanner for Android * Drozer runs in a emulator or on-device, this new `dscanner` command... * starts a docker image with Drozer and the Android Emulator pre-installed, * loads the signed APK into the emulator * activates Drozer automated tests for the APK * gathers the report output and places it next to the original APK * The Drozer docker image can be: * cached locally for re-use (just don't run --clean*) * retrieved from dockerhub.com for more efficient runtime * or be built from scratch (in the new "./docker" directory) * New "Vulnerability Scanning" documentation section (run gendocs.sh)
This commit is contained in:
Kevin C. Krinke
Hans-Christoph Steiner
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13 changed files with 1063 additions and 1 deletions
127
docs/fdroid.texi
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docs/fdroid.texi
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@ -57,6 +57,7 @@ Free Documentation License".
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* Update Processing::
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* Build Server::
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* Signing::
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* Vulnerability Scanning::
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* GNU Free Documentation License::
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* Index::
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@end menu
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@ -1697,6 +1698,132 @@ A new key will be generated using these details, for each application that is
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built. (If a specific key is required for a particular application, this system
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can be overridden using the @code{keyaliases} config settings.
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@node Vulnerability Scanning
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@chapter Vulnerability Scanning (dscanner)
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F-Droid now includes a means of running automated vulnerability scanning
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using @uref{https://github.com/mwrlabs/drozer, Drozer}. This is achieved
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by starting a docker container, with the Android SDK and Emulator
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prepared already, installing drozer into the emulator and scripting the
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knobs to scan any fully built and signed APKs.
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Note: if your application is not intended to run within an Android
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emulator, please do not continue with these instructions. At this time,
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the @code{dscanner} feature is fully dependent upon your application
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running properly in an emulated environment.
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@section Quick Start
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@enumerate
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@item Ensure that your application is a signed release build
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@item @code{fdroid dscanner --init-only} from within the repo
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@item Go for a coffee, this takes a long time and requires approximately
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6 GB of disk space. Once this is complete, you'll be left with a docker
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container running and ready to go.
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@item @code{fdroid dscanner --latest app.pkg.name} from within the repo
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to run drozer on the latest build of @code{app.pkg.name}
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@item If all went well, there should be an ``app.pkg.name_CODE.apk.dscanner''
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file in the repo (next to the original APK file)
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@item When you're all done scanning packages, you can cleanup the docker
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container with: @code{fdroid dscanner --clean-only}
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@end enumerate
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You can also run the drozer scan as an optional part of the overall
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@code{fdroid build} operation. This option will trigger a drozer scan of
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all signed APKs found in the repo. See @code{fdroid build --help} for
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more information.
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@section Command Line Help
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@example
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usage: fdroid dscanner [options] [APPID[:VERCODE] [APPID[:VERCODE] ...]]
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positional arguments:
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app_id app-id with optional versioncode in the form
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APPID[:VERCODE]
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optional arguments:
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-h, --help show this help message and exit
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-v, --verbose Spew out even more information than normal
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-q, --quiet Restrict output to warnings and errors
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-l, --latest Scan only the latest version of each package
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--clean-after Clean after all scans have finished.
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--clean-before Clean before the scans start and rebuild the
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container.
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--clean-only Clean up all containers and then exit.
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--init-only Prepare drozer to run a scan
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--repo-path REPO_PATH
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Override repo path for built APK files.
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@end example
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@section From Scratch
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Because the docker image used to do the Android Emulator and all of that
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takes a considerable amount of time to prepare, one has been uploaded to
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dockerhub.com for general use. However, the astute researcher will be
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weary of any black boxes and want to build their own black box. This
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section elaborates how to build the docker image yourself.
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From within the F-Droid Server source code directory, @code{cd
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./docker/} in order to begin.
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Within this directory are the custom scripting used within the docker
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image creation. For conveience, there is a simple Makefile that
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wraps the process of creating images into convenient pieces.
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@subsection @code{make help}
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@example
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usage: make help|build|clean|kill|info
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help this help screen
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build create docker image
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clean remove images and containers
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kill stop running containers
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info details of running container
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@end example
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@subsection @code{make clean}
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Stops any running containers (@code{make kill}) and then forcully
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removes them from docker. After that, all images associated are also
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explicitly removed.
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Note: this will destroy docker images!
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@subsection @code{make build}
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Builds the actual docker container, tagged
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``dscanner/fdroidserver:latest'' from the local directory. Obviously
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this is operating with the @code{Dockerfile} to build and tie everything
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together nicely.
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@subsection @code{make kill}
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@code{docker kill} the container tagged ``dscanner''.
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@subsection @code{make info}
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Prints some useful information about the currently running dscanner
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container (if it is even running). The output of this command is
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confusing and raw but useful none-the-less. See example output below:
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@example
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CONTAINER ID IMAGE COMMAND
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CREATED STATUS PORTS
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NAMES
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b90a60afe477 dscanner/fdroidserver "/home/drozer/entrypo" 20
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minutes ago Up 20 minutes 0.0.0.0:32779->22/tcp,
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0.0.0.0:32778->5037/tcp, 0.0.0.0:32777->5554/tcp,
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0.0.0.0:32776->5555/tcp, 0.0.0.0:32775->5900/tcp,
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0.0.0.0:32774->5901/tcp dscanner
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Use:
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adb kill-server
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adb connect 172.17.0.2:32776
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@end example
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Typical usage is for finding the ``adb connect'' line or the ``ssh''
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port (32779 from the @code{0.0.0.0:32779->22/tcp} note).
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@node GNU Free Documentation License
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@appendix GNU Free Documentation License
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