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PostPosted: Tue Dec 18, 2018 3:24 am 

Joined: Tue Nov 03, 2015 10:38 pm
Posts: 58
The file is encrypted and I want to extract the video. https://drive.google.com/file/d/10XbpuT ... sp=sharing


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PostPosted: Tue Dec 18, 2018 3:26 am 

Joined: Tue Nov 03, 2015 10:38 pm
Posts: 58
please help~


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PostPosted: Thu Dec 20, 2018 12:29 am 

Joined: Tue Nov 03, 2015 10:38 pm
Posts: 58
誰か助けって emmm


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PostPosted: Thu Dec 20, 2018 2:15 am 

Joined: Mon Aug 20, 2018 4:25 pm
Posts: 2
x_hiro11 wrote:
The file is encrypted and I want to extract the video. https://drive.google.com/file/d/10XbpuT ... sp=sharing


http://prntscr.com/lx96c9
delete those three string with hxd and it is a flv file. You can play with it a flv player
https://drive.google.com/open?id=19LEfA ... 6W8yk1xLX_


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PostPosted: Thu Dec 20, 2018 9:14 am 

Joined: Tue Nov 03, 2015 10:38 pm
Posts: 58
gokhan935 wrote:
x_hiro11 wrote:
The file is encrypted and I want to extract the video. https://drive.google.com/file/d/10XbpuT ... sp=sharing


http://prntscr.com/lx96c9
delete those three string with hxd and it is a flv file. You can play with it a flv player
https://drive.google.com/open?id=19LEfA ... 6W8yk1xLX_


My God! 
きみは神様だ!スゴイ!
You are God! great!


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PostPosted: Fri Dec 21, 2018 10:07 am 

Joined: Tue Nov 03, 2015 10:38 pm
Posts: 58
@gokhan935
I still have 3 files that I can't extract according to the method you provided, all of which show garbled characters.
Please give me a free web disk, I want to upload the file to you, my network can't log in to Google now.

Can you use Baidu's network disk?
If you can, I upload to the network disk.
http://pan.baidu.com

Look at this picture:
Attachment:
QQ截图20181221181334.jpg [882.56 KiB]
Downloaded 1 time


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PostPosted: Sat Dec 22, 2018 12:27 am 

Joined: Tue Nov 03, 2015 10:38 pm
Posts: 58
@gokhan935
Please take a look at this file.
https://pan.baidu.com/s/1vfpPPa4t2W8GUlO1munRBw


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PostPosted: Wed Jan 02, 2019 10:08 am 

Joined: Tue Nov 03, 2015 10:38 pm
Posts: 58
Linked content can not download? Why no one replies to me.


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PostPosted: Wed Jan 02, 2019 7:05 pm 
Site Admin
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Joined: Wed Jul 30, 2014 9:32 pm
Posts: 9946
Yes, Baidu wants login.


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PostPosted: Thu Jan 03, 2019 1:25 am 

Joined: Tue Nov 03, 2015 10:38 pm
Posts: 58
@ aluigi

This should be available for download without logging in.
Click Download, then enter the characters and the download will start automatically.
http://www.filedropper.com/test_29

These three file encryptions seem to be more complicated. The method using gokhan935 is invalid..


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PostPosted: Thu Jan 03, 2019 3:43 am 
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Joined: Fri Aug 08, 2014 1:06 am
Posts: 582
01.cd is xored with 0xED
02.cd is xored with 0xF1
03.cd is xored with 0xF1
:D

_________________
Quickbms.com link thread
Search bms scripts


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PostPosted: Thu Jan 03, 2019 6:40 am 
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Joined: Wed Jul 30, 2014 9:32 pm
Posts: 9946
Code:
# the first bytes are 0xa1bd or 0xbda1
goto 2
get KEY byte
math KEY ^ 0x01
filexor KEY
savepos OFFSET
get SIZE asize
math SIZE - OFFSET
get NAME basename
string NAME + "."
log NAME OFFSET SIZE

Do you have the name of this software?
I see only a http://www.51zxw.net/ website in these flv videos.


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PostPosted: Thu Jan 03, 2019 10:41 am 

Joined: Tue Nov 03, 2015 10:38 pm
Posts: 58
@ aluigi
Does this software refer to software that encrypts .cd files? That I don't have, only .exe, used to start the video.


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PostPosted: Thu Jan 03, 2019 3:08 pm 
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Joined: Wed Jul 30, 2014 9:32 pm
Posts: 9946
Yes the name of the software you use for playing the videos.
Just for having a searchable "word" for the search engines in case other people need a way for decrypting these cd files.


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PostPosted: Fri Jan 04, 2019 12:24 am 

Joined: Tue Nov 03, 2015 10:38 pm
Posts: 58
@ aluigi
This is the directory structure, the temp inside is the .cd file.
Attachment:
QQ截图20190104082704.jpg [69.52 KiB]
Not downloaded yet


This is the "Entering learning" folder
http://www.filedropper.com/enteringlearning


Thank you very much, you have helped me many times! I want to make friends with you. Do you have wechat ID?
This is my wechat ID hiro_ryuu

I really like this forum!!!!!!


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PostPosted: Fri Jan 04, 2019 12:39 am 

Joined: Tue Nov 03, 2015 10:38 pm
Posts: 58
@Acewell
I don't understand how to use those characters.
Last night I used winhex to search for the hexadecimal characters you provided, and I didn't find any results.

I really appreciate the enthusiastic help of netizens. I love everyone!


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PostPosted: Mon Jan 07, 2019 12:25 am 

Joined: Tue Nov 03, 2015 10:38 pm
Posts: 58
@ aluigi
Can you record a video tutorial? I want to know the process of writing this code. What programming language does this belong to?
Thank You


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PostPosted: Mon Jan 07, 2019 1:50 pm 
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Joined: Wed Jul 30, 2014 9:32 pm
Posts: 9946
I'm a bit lost in the conversation :)

The decrypted CD files are just FLV videos that you can play with any media player.
Maybe give them the .flv extension just to be sure that the media player loads them.


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PostPosted: Tue Jan 08, 2019 12:30 am 

Joined: Tue Nov 03, 2015 10:38 pm
Posts: 58
@ aluigi
I want to know the process of using winhex to find the address and writing bms.
After that, I can self-sufficiency, hahaha.


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PostPosted: Thu Jan 10, 2019 8:19 pm 
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Joined: Wed Jul 30, 2014 9:32 pm
Posts: 9946
Ah only that!
You need various years of practice in reverse engineering :)


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