From: Christian Weiske Date: Fri, 20 Dec 2019 20:33:59 +0000 (+0100) Subject: Initial version X-Git-Tag: v1.0.0 X-Git-Url: https://git.cweiske.de/xposed-ouya-plain-purchases.git/commitdiff_plain/8d49cf512bde32b8451b61976189a0fb68a70d17 Initial version --- 8d49cf512bde32b8451b61976189a0fb68a70d17 diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..ab2e1dd --- /dev/null +++ b/.gitignore @@ -0,0 +1,19 @@ +*.iml +.gradle +/local.properties +/.idea/ +/.idea/caches +/.idea/libraries +/.idea/modules.xml +/.idea/workspace.xml +/.idea/navEditor.xml +/.idea/assetWizardSettings.xml +.DS_Store +/build +/captures +.externalNativeBuild +.cxx +/gradle/ +/gradlew +/gradlew.bat +/README.html diff --git a/README.rst b/README.rst new file mode 100644 index 0000000..837c229 --- /dev/null +++ b/README.rst @@ -0,0 +1,15 @@ +******************** +OUYA plain purchases +******************** + +Xposed__ module that deactivates encryption on the OUYA Android gaming console. + +Its goal is that purchase requests get sent plain-text to the +`discover store server`__, +and the server may reply with plain text purchase receipts. + +Works by patching ``javax.crypto.Cipher::doFinal(byte[])`` to return +the input without encryption/decryption. + +__ https://repo.xposed.info/module/de.robv.android.xposed.installer +__ http://cweiske.de/ouya-store-api-docs.htm diff --git a/build.gradle b/build.gradle new file mode 100644 index 0000000..a5bb815 --- /dev/null +++ b/build.gradle @@ -0,0 +1,27 @@ +// Top-level build file where you can add configuration options common to all sub-projects/modules. + +buildscript { + repositories { + google() + jcenter() + + } + dependencies { + classpath 'com.android.tools.build:gradle:3.5.3' + + // NOTE: Do not place your application dependencies here; they belong + // in the individual module build.gradle files + } +} + +allprojects { + repositories { + google() + jcenter() + + } +} + +task clean(type: Delete) { + delete rootProject.buildDir +} diff --git a/gradle.properties b/gradle.properties new file mode 100644 index 0000000..82618ce --- /dev/null +++ b/gradle.properties @@ -0,0 +1,15 @@ +# Project-wide Gradle settings. +# IDE (e.g. Android Studio) users: +# Gradle settings configured through the IDE *will override* +# any settings specified in this file. +# For more details on how to configure your build environment visit +# http://www.gradle.org/docs/current/userguide/build_environment.html +# Specifies the JVM arguments used for the daemon process. +# The setting is particularly useful for tweaking memory settings. +org.gradle.jvmargs=-Xmx1536m +# When configured, Gradle will run in incubating parallel mode. +# This option should only be used with decoupled projects. More details, visit +# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects +# org.gradle.parallel=true + + diff --git a/settings.gradle b/settings.gradle new file mode 100644 index 0000000..acbd8a8 --- /dev/null +++ b/settings.gradle @@ -0,0 +1,2 @@ +include ':xposed-ouya-plain-purchases' +rootProject.name='OUYA plain purchases Xposed module' diff --git a/xposed-ouya-plain-purchases/.gitignore b/xposed-ouya-plain-purchases/.gitignore new file mode 100644 index 0000000..dc5ca96 --- /dev/null +++ b/xposed-ouya-plain-purchases/.gitignore @@ -0,0 +1,2 @@ +/build +/release/ diff --git a/xposed-ouya-plain-purchases/build.gradle b/xposed-ouya-plain-purchases/build.gradle new file mode 100644 index 0000000..cea65fe --- /dev/null +++ b/xposed-ouya-plain-purchases/build.gradle @@ -0,0 +1,29 @@ +apply plugin: 'com.android.application' + +android { + compileSdkVersion 16 + buildToolsVersion '19.1.0' + defaultConfig { + applicationId "de.cweiske.ouya.plainpurchases" + minSdkVersion 15 + targetSdkVersion 16 + versionCode 1 + versionName "1.0" + } + buildTypes { + release { + minifyEnabled false + } + } + lintOptions { + checkReleaseBuilds false + // Or, if you prefer, you can continue to check for errors in release builds, + // but continue the build even when errors are found: + abortOnError false + } +} + +dependencies { + implementation fileTree(dir: 'libs', include: ['*.jar']) + compileOnly 'de.robv.android.xposed:api:53' +} diff --git a/xposed-ouya-plain-purchases/src/main/AndroidManifest.xml b/xposed-ouya-plain-purchases/src/main/AndroidManifest.xml new file mode 100644 index 0000000..086dd00 --- /dev/null +++ b/xposed-ouya-plain-purchases/src/main/AndroidManifest.xml @@ -0,0 +1,20 @@ + + + + + + + + diff --git a/xposed-ouya-plain-purchases/src/main/assets/xposed_init b/xposed-ouya-plain-purchases/src/main/assets/xposed_init new file mode 100644 index 0000000..5ac6fe6 --- /dev/null +++ b/xposed-ouya-plain-purchases/src/main/assets/xposed_init @@ -0,0 +1 @@ +de.cweiske.ouya.plainpurchases.PlainPurchases diff --git a/xposed-ouya-plain-purchases/src/main/java/de/cweiske/ouya/plainpurchases/PlainPurchases.java b/xposed-ouya-plain-purchases/src/main/java/de/cweiske/ouya/plainpurchases/PlainPurchases.java new file mode 100644 index 0000000..324f882 --- /dev/null +++ b/xposed-ouya-plain-purchases/src/main/java/de/cweiske/ouya/plainpurchases/PlainPurchases.java @@ -0,0 +1,40 @@ +package de.cweiske.ouya.plainpurchases; + +import javax.crypto.Cipher; + +import de.robv.android.xposed.IXposedHookLoadPackage; +import de.robv.android.xposed.XC_MethodHook; +import de.robv.android.xposed.XposedBridge; +import de.robv.android.xposed.XposedHelpers; +import de.robv.android.xposed.callbacks.XC_LoadPackage; + +/** + * Hook into Java's main encryption method and simply return the input. + * This disables encryption completely, and allows our OUYA store to retrieve + * plain text requests and send plain text responses that the OUYA understands + * + * @author Christian Weiske + */ +public class PlainPurchases implements IXposedHookLoadPackage +{ + @Override + public void handleLoadPackage(XC_LoadPackage.LoadPackageParam lpparam) + { + //we cannot filter on lpparam.packagename because that breaks + // in-game receipt decryption + + //XposedBridge.log("Loaded app: " + lpparam.packageName); + + XposedHelpers.findAndHookMethod(Cipher.class, "doFinal", byte[].class, new XC_MethodHook() { + @Override + protected void beforeHookedMethod(MethodHookParam param) { + byte[] input = (byte[]) param.args[0]; + + //XposedBridge.log("input: " + new String(input)); + //XposedBridge.log("returning unencrypted input"); + //XposedBridge.log(new Exception("doFinal stack trace")); + param.setResult(input); + } + }); + } +} diff --git a/xposed-ouya-plain-purchases/src/main/res/mipmap-hdpi/broken_encryption_48.png b/xposed-ouya-plain-purchases/src/main/res/mipmap-hdpi/broken_encryption_48.png new file mode 100644 index 0000000..174f7b9 Binary files /dev/null and b/xposed-ouya-plain-purchases/src/main/res/mipmap-hdpi/broken_encryption_48.png differ diff --git a/xposed-ouya-plain-purchases/src/main/res/values/strings.xml b/xposed-ouya-plain-purchases/src/main/res/values/strings.xml new file mode 100644 index 0000000..b4af502 --- /dev/null +++ b/xposed-ouya-plain-purchases/src/main/res/values/strings.xml @@ -0,0 +1,3 @@ + + OUYA plain purchases Xposed module +