pysqlcipher.dbapi2.DatabaseError: file is encrypted or is not a database about wechat-dump HOT 20 CLOSED

I also suffered the same issue on Meizu MX4: correct imei and uid, but wrong password.
I wrote a tool to crack the passwrod.
https://github.com/chg-hou/EnMicroMsg.db-Password-Cracker
Although it takes days, at least we won't be blocked from our own messages.
@simbaforrest @dequn

from wechat-dump.

I'm not sure what's the problem. You may have a try on the old decryption tools (which uses a different way to decrypt):

cd legacy
ln -sv ../compatibility.sh ./
./decrypt-db.sh <path to EnMicroMsg.db> <imei> <uin>

from wechat-dump.

It seems like the KEY is error , I got the key and open EnMicroMsg.db in Navicat ,it also give the same error tip.While I'm sure the IMEI and WXUID is ok. Thanks.

from wechat-dump.

It seems that Wechat changed the KEY? I got exactly the same error...... Anyone recently tried with success?

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Yes, I also think so.

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Wow, so it means this is not working anymore? What can we do now? V_V @dequn

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Well, I don't know so far, how did they know the encrypting method , can we hack it ? @simbaforrest

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I have no idea how they found out the KEY...... @dequn

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The decryption still works today as I tested on my latest version of wechat. So it's unlikely that they changed the method.
It could be possible that encryption (how the key is generated, how the sqlcipher library is used) is different in different phones, and unfortunately I couldn't guess what's the problem.

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What phone do you use? Mine is a Nexus 6...... @ppwwyyxx

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I use XiaoMi Mi3W. There is a wiki page contributed by some users about what works and what doesn't.

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This sounds weird... I cannot think of a reason why they want to write codes that uses different encryption for different phones... Maybe something else was wrong...

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I agree with you, this is weird. But still, I can do nothing unless I have the phone or some data to look at.
Are you a fairly new wechat user or an old user? It could be possible that they use some new mechanism for new users but keep things for old users for compatibility.

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I totally understand, sorry for too many posts here...
I start using Wechat three or four years ago so I guess I am "old" enough, lol

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@chg-hou That's a great tool! Thanks!

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WeChat 6.5.4,
Xiaomi MI4LTE,
Same issue here, however I attempted it on backups extracted using Windows WeChat client backup tool.

from wechat-dump.

After the open-source of WCDB (https://github.com/Tencent/wcdb), can this library work?
.db could not be sqlite anymore

I have same issue which cannot decrypt.

➜  wd git:(master) ✗ ./decrypt-db.py EnMicroMsg.db [hidden] [hidden]
decrypted.db already exists. Remove? (y/n) y
KEY: [hidden]
Decrypt and dump database to decrypted.db ...
Traceback (most recent call last):
  File "./decrypt-db.py", line 53, in <module>
    c.execute("ATTACH DATABASE '" + args.output + "' AS db KEY '';")
pysqlcipher.dbapi2.DatabaseError: file is encrypted or is not a database

from wechat-dump.

One potential pitfall: make sure the EnMicroMsg.db is dumped correctly. My phone is not rooted (but has su installed), so I need to copy the db file somewhere, fix the permissions, before trying to cat/pull it:

adb shell "su -c 'cp $MM_DIR/MicroMsg/$chooseUser/EnMicroMsg.db /data/local/tmp && chown shell.shell /data/local/tmp/EnMicroMsg.db'; cat /data/local/tmp/EnMicroMsg.db" > EnMicroMsg.db

If the file is not dumped correctly, there is no way to tell from the errors (it can never be decrypted).

from wechat-dump.

same as me.
I'm using WeChat 7.0.x.

from wechat-dump.

I rewrote the decryption logic by improving pysqlcipher usage and adding more ways to obtain IMEI and UIN. It may increase the chance of success.

However, things might be different on everyone's phone and it's hard to help with other people's phones. More generally, other ways to increase chance of success are listed in #64 and any help to implement them would be appreciated.

from wechat-dump.