Messages in msdk_reversing
[2021-02-07 11:35:09]
mats.bohlinsson :
set the channel description: Reversing from the app-side to get access to features not exposed to the MSDK api
[2021-02-07 11:35:09]
mats.bohlinsson :
@mats.bohlinsson has joined the channel
[2021-02-07 11:45:11]
mats.bohlinsson :
In this channel we can discuss what's possible to do from the app.
My main goal is to be able to control the drone for really cool flying completly autonomous.
One example.
In virtualsticks mode it's possible to bypass speed checks. It's possible to have +-10 m/s asc speed on almost all drones, even mini2.
There is also a possibilty to change the stick rates, and to send Flyc commands directly to the drone.
A few videos to explain my goal, mostly
ground follow with pid-regulator:
<https://www.youtube.com/watch?v=qL6fK-ayjtU&ab_channel=MatsBohlinsson>
followme mission tracker phone:
<https://youtu.be/nA3FVwELo28>
[2021-02-07 11:49:05]
mats.bohlinsson :
Since the SDK to mini2 isn't released yet, I'm working to bypass it and send commands directly to the drone.
I've got fpv, virtualsticks working with increased speed :slightly_smiling_face: +-10m/s asc/desc, and parameters. I can send all Flyc command to the mini2
BUT the drone refuses to go further than 50m, and then stops.
If I start with the fly-app and switch app in mid-flight there is no problem.
Do anyone know what's missing? I guess it's a startup sequence I missed.
[2021-02-07 12:00:49]
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[2021-02-08 10:38:12]
validat0r :
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[2021-02-08 10:38:38]
validat0r :
App rev dev is my cup of tea
[2021-02-08 17:34:00]
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[2021-02-08 23:32:38]
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[2021-02-09 17:37:09]
jcase :
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[2021-02-09 17:37:47]
jcase :
mobile sdk secneo is incredibally week and easy to unpack
[2021-02-09 17:37:54]
jcase :
well idk about latest release
[2021-02-09 17:38:04]
jcase :
latest pilot release has really changed secneo a lot
[2021-02-11 11:40:09]
mats.bohlinsson :
I've never done any unpacking of secneo. @jcase , can you give med a little help with where to start?
[2021-02-11 13:38:35]
jcase :
libDexHelper is where you start
[2021-02-11 13:38:50]
jcase :
so at runtime it writes an encrypted jar with classes to disk
[2021-02-11 13:39:07]
jcase :
then, depending on the version of secneo
[2021-02-11 13:39:25]
jcase :
it replaces the bytecode just prior to execution
[2021-02-11 14:12:41]
mats.bohlinsson :
Thanks!
[2021-02-11 14:13:28]
jcase :
np
[2021-02-11 14:13:39]
jcase :
but you will find a wild variety of variants
[2021-02-11 14:13:53]
jcase :
for a short period of time secneo was broken and not properly cleaning up
[2021-02-11 14:14:09]
jcase :
(thats when someone published an article on unpacking secneo, that has been fixed)
[2021-02-11 18:44:04]
mats.bohlinsson :
I might get back to you, for the moment I sadly :confused: have to much to do on my job.
[2021-02-11 18:47:56]
mats.bohlinsson :
I found out that the mini2 report 63 in the DataOsdGetPushCommon-message. Mini1 53. So I would try to replace the enum value WM160(53) with WM160(63) just to see what happens. Don't know how hard it is to hotload/mock a method in runtime?
[2021-02-11 18:48:21]
jcase :
frida or exposed could do it
[2021-02-11 18:48:31]
jcase :
however i suspect by the time you get this stable
[2021-02-11 18:48:34]
jcase :
the sdk will support it
[2021-02-11 21:05:18]
mats.bohlinsson :
hehe you probably right :slightly_smiling_face:
[2021-02-15 04:45:23]
cloudwerx :
@tylerpublic has joined the channel
[2021-02-18 09:03:54]
mats.bohlinsson :
Seems like app store rejecting app updates for all DJI apps. Don't know if google plays still works. Another reason to reverse msdk :slightly_smiling_face:
<https://mavicpilots.com/threads/app-store-rejecting-app-updates-for-all-dji-apps.106848/>
[2021-02-18 13:37:19]
validat0r :
oh boy .. so now Google **and** Apple are having beef with DJI?
[2021-02-18 14:43:32]
jcase :
yes
[2021-02-18 14:43:35]
jcase :
this is known
[2021-02-18 14:43:52]
jcase :
its because secneo does some memory manipulation that is banned by the app store policy
[2021-02-18 14:44:20]
validat0r :
they should just drop secneo and all's fine
[2021-02-18 14:44:44]
jcase :
i dont think it has jack to do with us gov
[2021-02-18 14:44:52]
jcase :
they should license my packer
[2021-02-18 14:44:54]
jcase :
from me
[2021-02-18 14:44:57]
validat0r :
nono
[2021-02-18 14:44:58]
jcase :
for half the price
[2021-02-18 14:45:52]
validat0r :
just drop obfusc and maybe go open source
[2021-02-18 14:46:28]
jcase :
nah, if they make things easier, you are going to see more regulation on both them and you
[2021-02-18 14:46:38]
jcase :
fear of governmental regulation is why they use secneo
[2021-03-14 16:56:31]
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