Get all messages from Whatsapp

44

I'm trying to implement an app that will show in a textview all the messages received from Whatsapp. Is there any way to do it? Is it possible to extract all the messages from Whatsapp?

This question is tagged with android encryption message whatsapp inbox

~ Asked on 2012-01-13 20:33:44

The Best Answer is


30

Whatsapp store all messages in an encrypted database (pyCrypt) which is very easy to decipher using Python.

You can fetch this database easily on Android, iPhone, Blackberry and dump it into html file. Here are complete instructions: Read, Extract WhatsApp Messages backup on Android, iPhone, Blackberry

Disclaimer: I researched and wrote this extensive guide.

~ Answered on 2013-03-15 07:37:30


19

Working Android Code: (No root required)

Once you have access to the dbcrypt5 file , here is the android code to decrypt it:

private byte[] key = { (byte) 141, 75, 21, 92, (byte) 201, (byte) 255,
        (byte) 129, (byte) 229, (byte) 203, (byte) 246, (byte) 250, 120,
        25, 54, 106, 62, (byte) 198, 33, (byte) 166, 86, 65, 108,
        (byte) 215, (byte) 147 };

private final byte[] iv = { 0x1E, 0x39, (byte) 0xF3, 0x69, (byte) 0xE9, 0xD,
        (byte) 0xB3, 0x3A, (byte) 0xA7, 0x3B, 0x44, 0x2B, (byte) 0xBB,
        (byte) 0xB6, (byte) 0xB0, (byte) 0xB9 };
   long start = System.currentTimeMillis();

    // create paths
    backupPath = Environment.getExternalStorageDirectory()
            .getAbsolutePath() + "/WhatsApp/Databases/msgstore.db.crypt5";
    outputPath = Environment.getExternalStorageDirectory()
            .getAbsolutePath() + "/WhatsApp/Databases/msgstore.db.decrypt";

    File backup = new File(backupPath);

    // check if file exists / is accessible
    if (!backup.isFile()) {
        Log.e(TAG, "Backup file not found! Path: " + backupPath);
        return;
    }

    // acquire account name
    AccountManager manager = AccountManager.get(this);
    Account[] accounts = manager.getAccountsByType("com.google");

    if (accounts.length == 0) {
        Log.e(TAG, "Unable to fetch account!");
        return;
    }

    String account = accounts[0].name;

    try {
        // calculate md5 hash over account name
        MessageDigest message = MessageDigest.getInstance("MD5");
        message.update(account.getBytes());
        byte[] md5 = message.digest();

        // generate key for decryption
        for (int i = 0; i < 24; i++)
            key[i] ^= md5[i & 0xF];

        // read encrypted byte stream
        byte[] data = new byte[(int) backup.length()];
        DataInputStream reader = new DataInputStream(new FileInputStream(
                backup));
        reader.readFully(data);
        reader.close();

        // create output writer
        File output = new File(outputPath);
        DataOutputStream writer = new DataOutputStream(
                new FileOutputStream(output));

        // decrypt file
        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
        SecretKeySpec secret = new SecretKeySpec(key, "AES");
        IvParameterSpec vector = new IvParameterSpec(iv);
        cipher.init(Cipher.DECRYPT_MODE, secret, vector);
        writer.write(cipher.update(data));
        writer.write(cipher.doFinal());
        writer.close();
    } catch (NoSuchAlgorithmException e) {
        Log.e(TAG, "Could not acquire hash algorithm!", e);
        return;
    } catch (IOException e) {
        Log.e(TAG, "Error accessing file!", e);
        return;
    } catch (Exception e) {
        Log.e(TAG, "Something went wrong during the encryption!", e);
        return;
    }

    long end = System.currentTimeMillis();

    Log.i(TAG, "Success! It took " + (end - start) + "ms");

~ Answered on 2014-04-30 05:16:46


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