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ppwwyyxx / wechat-dump

Cracking encrypted wechat message history from android
GNU General Public License v3.0
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How is WeChat 6.5.* encryption mechanism different from the previous version? #54

Closed cs-usst closed 4 years ago

cs-usst commented 6 years ago

Here's what I've tried to decrypt my wechat database. They are all failed:

  1. Regular method: Tried to read the IMEI no. of my phone and combine it with wechat uin, then use the md5 hashed password to decrypt the database.
  2. Transfer my chat history to another phone and tried to decrypt with its IMEI and uin.
  3. Back up my chat history to my PC and restore on another phone. Then decrypt.
  4. Decrypt with password cracker. I tried all possibilities.

I read from other post that since WeChat 6.5.*, the encryption mechanism is changed. Is that the reason that I failed?

And btw, some of my chat history has reached almost 60000 lines. Is it possible to export?

rom1504 commented 6 years ago

I have version 6.6.2 and can still decrypt without any problem. What's the difference with your case ? Did you create a new account after 6.5 release ?

On Mon, Feb 19, 2018, 09:52 cs-usst notifications@github.com wrote:

Here's what I've tried to decrypt my wechat database. They are all failed:

  1. Regular method: Tried to read the IMEI no. of my phone and combine it with wechat uin, then use the md5 hashed password to decrypt the database.
  2. Transfer my chat history to another phone and tried to decrypt with its IMEI and uin.
  3. Back up my chat history to my PC and restore on another phone. Then decrypt.
  4. Decrypt with password cracker https://github.com/chg-hou/EnMicroMsg.db-Password-Cracker. I tried all possibilities.

I read from other post https://blog.slinuxer.com/2015/10/%E5%BE%AE%E4%BF%A1%E8%81%8A%E5%A4%A9%E8%AE%B0%E5%BD%95 that since WeChat 6.5.*, the encryption mechanism is changed. Is that the reason that I failed?

And btw, some of my chat history has reached almost 60000 lines. Is it possible to export?

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cs-usst commented 6 years ago

@rom1504 I created my account long time ago. And the only difference is that i used an Xposed module to randomize my IMEI. That's why I tried method 2,3 and 4 above.

By the way, in #42 @ChiChou provided a gist, which I don't know how to use. The gist is claimed to be able to get the actual device id.

ppwwyyxx commented 4 years ago

Now the method provided by @ChiChou was implemented in our decryption script