Xposed can not find class about xposedinstaller HOT 6 CLOSED

Can you provide a sample code?
Am 04.09.2014 10:57 schrieb "someonec" [email protected]:

My Issue is quite strage.

I am working on a Wechat Plugin. The origin app has an extra dex file in
it's folder app_dex

which can be called plugin-dex. The plugin-dex contains some activities
and UIs and

what I want to hook is in the plugin-dex.

when the app package was loaded, Xposed cant find the UI class, but
startActivity(myUI Intent) is

able to launch.

Perhaps the two dex file in the same app are not loaded at one time ,How
can I use Xposed to

solve the problem?

—
Reply to this email directly or view it on GitHub
#230.

from xposedinstaller.

Thanks for your focus.

Sorry I can't copy out some code to the browser because the disk is under a sandbox protection.

When I used findandhookmethod , it's able to hook classes in classe-dex but not in plugin-dex.

After I hook the launch class in classes-dex,I parsed param.thisObject to activity and lauch the aim class nearbyUI in plugin-dex successfully.

But when I hook the aim class directly , Xposed loged cant find the aim class.

Have you ever seen this situation ,One app have multiple dex file and Xposed can only hook classes in one dex?

------------------ 原始邮件 ------------------
发件人: "theknut";[email protected];
发送时间: 2014年9月4日(星期四) 下午5:00
收件人: "rovo89/XposedInstaller"[email protected];
抄送: "Keith Lee"[email protected];
主题: Re: [XposedInstaller] Xposed can not find class (#230)

Can you provide a sample code?
Am 04.09.2014 10:57 schrieb "someonec" [email protected]:

My Issue is quite strage.

I am working on a Wechat Plugin. The origin app has an extra dex file in
it's folder app_dex

which can be called plugin-dex. The plugin-dex contains some activities
and UIs and

what I want to hook is in the plugin-dex.

when the app package was loaded, Xposed cant find the UI class, but
startActivity(myUI Intent) is

able to launch.

Perhaps the two dex file in the same app are not loaded at one time ,How
can I use Xposed to

solve the problem?

—
Reply to this email directly or view it on GitHub
#230.

—
Reply to this email directly or view it on GitHub.

from xposedinstaller.

Have you ever seen this situation ,One app have multiple dex file and Xposed can only hook classes in one dex?

Xposed can hook any class - if you're using the correct ClassLoader. Most likely, the app creates an additional ClassLoader to load classes from the other dex files. So if you're using lpparam.classLoader, it probably doesn't know that the class exists. If you use the custom ClassLoader for findAndHookMethod, it should work.
It might also be possible that apps manipulate their primary ClassLoader, I think Facebook did/does this. Then you could hook the class only after the manipulation was done.

from xposedinstaller.

How would one be able to get the other class loader?
Am 04.09.2014 19:20 schrieb "rovo89" [email protected]:

Have you ever seen this situation ,One app have multiple dex file and
Xposed can only hook classes in one dex?

Xposed can hook any class - if you're using the correct ClassLoader. Most
likely, the app creates an additional ClassLoader to load classes from the
other dex files. So if you're using lpparam.classLoader, it probably
doesn't know that the class exists. If you use the custom ClassLoader for
findAndHookMethod, it should work.
It might also be possible that apps manipulate their primary ClassLoader,
I think Facebook did/does this. Then you could hook the class only after
the manipulation was done.

—
Reply to this email directly or view it on GitHub
#230 (comment)
.

from xposedinstaller.

Indirectly... depends on the application. I would suggest looking for class reachable from the primary ClassLoader which has access to a class or instance of the secondary ClassLoader. Then you could get the ClassLoader with reflection.

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Hi rovo89,

Thank you for your help.

I'm glad to tell you that it works.

Finally I found the custom ClassLoader and hooked it, and then use findandhookmethod and

findstaticobjectfield to foreach ‍the aim list-field .

You did good job!

Cheers,

------------------ 原始邮件 ------------------
发件人: "rovo89";[email protected];
发送时间: 2014年9月5日(星期五) 凌晨1:20
收件人: "rovo89/XposedInstaller"[email protected];
抄送: "Keith Lee"[email protected];
主题: Re: [XposedInstaller] Xposed can not find class (#230)

Have you ever seen this situation ,One app have multiple dex file and Xposed can only hook classes in one dex?

Xposed can hook any class - if you're using the correct ClassLoader. Most likely, the app creates an additional ClassLoader to load classes from the other dex files. So if you're using lpparam.classLoader, it probably doesn't know that the class exists. If you use the custom ClassLoader for findAndHookMethod, it should work.
It might also be possible that apps manipulate their primary ClassLoader, I think Facebook did/does this. Then you could hook the class only after the manipulation was done.

—
Reply to this email directly or view it on GitHub.

from xposedinstaller.