Android逆向之2-优雅拦截sqlcipher sqlite数据库密码
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本文介绍了Android逆向之2-优雅拦截sqlcipher sqlite数据库密码，希望对您有用。如果有疑问，可以联系我们。
在你逆向分析**app时,分析分析其数据存储结构绝对是事倍功倍.
下面是我在hook 微信sqlite暗码的分享
知识准备
1：懂的利用xposed框架或Cydia框架hook技术
2 ：jadx工具(定位分析工具)
static public void wechatOpenDatabase(String wechatVersionName, final XC_LoadPackage.LoadPackageParam lpparam) {
/**
*调用生成SQLiteDatabase 重要入口
* //主要第3个参数是sqlite的暗码
public static SQLiteDatabase openDatabase(String paramString1, LockedDevice paramLockedDevice, String paramString2, Arithmetic paramArithmetic, CursorFactory paramCursorFactory, int paramInt1, DatabaseErrorHandler paramDatabaseErrorHandler, boolean paramBoolean, int paramInt2)
{
SQLiteDatabase localSQLiteDatabase = new SQLiteDatabase(paramString1, paramInt1, paramCursorFactory, paramDatabaseErrorHandler);
localSQLiteDatabase.open(paramLockedDevice, paramString2, paramArithmetic, paramBoolean, paramInt2);
return localSQLiteDatabase;
}
*/
try {
Class clazzPalue3= null;
if (wechatVersionName.equals("6.3.13.56_r238e8af")){
clazzPalue3 = String.class;
}else {
clazzPalue3 = byte[].class;
}
XposedHelpers.findAndHookMethod(PluginsConfigWechatSqlite.WECHAT_SQLiteDatabase_CLASSE, lpparam.classLoader, "openDatabase",
String.class, //sqlite 数据库文件全路径如：/data/data/com.tencent.mm/MicroMsg/71daf7e10a38aa48ee8bad199dde232a/EnMicroMsg.db
lpparam.classLoader.loadClass(PluginsConfigWechatSqlite.WECHAT_SQLiteDatabase_CLASSE+"$LockedDevice"),
clazzPalue3,//byte[].class,//String.class, //6.3.13版本string.class6.3.31是byte[].class sqlite数据库的暗码如21e8906
lpparam.classLoader.loadClass(PluginsConfigWechatSqlite.WECHAT_SQLiteDatabase_CLASSE+"$Arithmetic"),
lpparam.classLoader.loadClass(PluginsConfigWechatSqlite.WECHAT_SQLiteDatabase_CLASSE+"$CursorFactory"),
int.class,
lpparam.classLoader.loadClass(PluginsConfigWechatSqlite.WECHAT_SQLiteDatabase_3Level_CLASSE+".DatabaseErrorHandler"),
boolean.class,
int.class,
new XC_MethodHook() {
@Override
protected void afterHookedMethod(MethodHookParam param) throws Throwable {
super.afterHookedMethod(param);
String strSqliteDatabaseFilePaht= (String) param.args[0];
//if (strSqliteDatabaseFilePaht.endsWith("EnMicroMsg.db") && EnMicroMsgSQLiteDatabaseObject ==null) { //获取EnMicroMsg对应的SQLiteDatabase
if (strSqliteDatabaseFilePaht.endsWith("EnMicroMsg.db")) { //获取EnMicroMsg对应的SQLiteDatabase
EnMicroMsgSQLiteDatabaseObject = param.getResult();
System.out.println("SQLiteDatabaseObject的类名:"+ EnMicroMsgSQLiteDatabaseObject.getClass().getName());
}
}
@Override
protected void beforeHookedMethod(MethodHookParam param) throws Throwable {
//SQLiteDatabase db = SQLiteDatabase openDatabase(String path, SQLiteDatabase.CursorFactory factory, int flags)
String mm ="";
if (param.args[2] !=null){
String str= param.args[2].getClass().getName();
if (str.equals("[B")){
byte[] mmbytes = (byte[]) param.args[2];
mm = new String(mmbytes,"UTF-8");
}else if (str.equals("java.lang.String")) {
mm =""+param.args[2];
}
}
//Log.i(TAG,"openDatabase String 0参数sqlite全路径和暗码： " +param.args[0]+"参数sqlite暗码：" +param.args[2].toString());
Log.i(TAG,"openDatabase String 0参数sqlite全路径和暗码： " +param.args[0]+"参数sqlite暗码：" +mm);
}
});
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
}
jadx工具分析定位在com.tencent.mmdb.database.SQLiteDatabase
启动**发现微信启动时同时打开的数据库有
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