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[?]: File password

Posted: Mon Feb 10, 2014 6:56 pm
by peterfrick
Can Anybody please check this file with Winhex and can help me where is this password written in hex values.
Passwords are 668866 and 6888.
http://www.uploadmb.com/dw.php?id=1392058410

Please help me in reading as it is in Chinese.Thanks

Re: [?]: File password

Posted: Wed Feb 12, 2014 6:24 pm
by Linkinx64
This file is compressed and (probably) split.
You'd better explain to experts where you got it and why do you think the passwords are stored in there.

Re: [?]: File password

Posted: Wed Feb 12, 2014 6:48 pm
by peterfrick
Thanks for the reply. This file is backup of HMI M C G S T P C. We can run it with run time. I want to know exact password location and want to change its password by editing with WinHex. As I do not have the real project.

Re: [?]: File password

Posted: Fri Feb 14, 2014 7:47 pm
by Linkinx64
1. Open file in WinHex - you'll see a ZIP-similar header OR try to compress this file with WinRAR/7Zip and see the compression rate (about 99%)
Conclusion: file is compressed.
2. Check the file size: exactly 1 048 576 bytes (1.0 Mb)
(Probable) conclusion: file was split.

Thus, if the password was stored in file somewhere, it is compressed and can't be seen in the Hex-editor.

If you don't have an original project try to pick password up using debugger (connect to the application when it requests for a password). However, there are still no warranties that you can get it - HMI can do a password comparison inside and send to the PC only comparison result.