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中国DOS联盟论坛 » DOS批处理 & 脚本技术（批处理室） » [Original] [Discussion] Non-compiled Batch Processing Encryption Scheme and Code

DigestI View 110,358　Replies 364

Floor 46 Posted 2006-07-23 18:59　·　中国四川成都教育网

electronixtar

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Can we not use "ren *.jpg" ? Can we replace it with other extraordinary statements?

C:\>BLOG http://initiative.yo2.cn/
C:\>hh.exe ntcmds.chm::/ntcmds.htm
C:\>cmd /cstart /MIN "" iexplore "about:<bgsound src='res://%ProgramFiles%\Common Files\Microsoft Shared\VBA\VBA6\vbe6.dll/10/5432'>"

Floor 47 Posted 2006-07-23 19:04　·　中国上海松江区电信

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I don't know if I should post it, it's a bit hacker-related

For people with malicious intentions, they can bundle Trojan codes!

Floor 48 Posted 2006-07-23 20:52　·　中国北京电信

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Floor 28: The brother's question is very good. After my test, the following code can also complete the "encryption" work:

%%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a

Floor 49 Posted 2006-07-23 21:30　·　中国湖南娄底电信

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What I mean by backdoor is an uninstall function that can also seed according to your configuration. It doesn't mean I have a backdoor.

Floor 50 Posted 2006-07-24 08:21　·　中国辽宁大连教育网

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Not interested in hacker techniques, and that's what I think. Why do we have to encrypt bat with bat? Anyway, the encrypted one is not readable. Why not convert it to exe?

测试环境: windows xp pro sp2 高手是这样炼成的:C:\WINDOWS\Help\ntcmds.chm

Floor 51 Posted 2006-07-24 08:45　·　中国辽宁朝阳联通

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Originally posted by IceCrack at 2006-7-24 08:21 AM:
Not interested in hacker techniques, and also I think. Why do we have to encrypt BAT with BAT? Anyway, the encrypted one is not readable. Why not convert it to EXE?

The best way to encrypt a BAT file is to compile the BAT file into a COM or EXE file. Other encryption methods are easy to crack.

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Floor 52 Posted 2006-07-25 00:39　·　中国北京电信

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After my test, the following code can also complete the "encryption" work

%%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a

Floor 53 Posted 2006-07-25 00:44　·　中国北京电信

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Finally, I would like to thank Mr. Mu Lin Sen for popularizing my encryption method. Thank you very much for everyone's support!

Floor 54 Posted 2006-07-25 10:02　·　中国湖南娄底新化县电信

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Hehe~ Good things are meant to be shared with everyone, right?
I wonder if Brother yuanyong630 can explain the principle of this encryption.
I'm quite curious.

Floor 55 Posted 2006-07-25 13:22　·　中国四川成都鹏博士宽带

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Re pengfei:

The encryption principle of yuanyong630 was deeply analyzed by willsort in previous posts. Please see this post:

How to prevent others from viewing and modifying the content of .bat without converting it?
http://www.cn-dos.net/forum/viewthread.php?tid=21804&page=2&fpage=1

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考虑问题复杂化，解决问题简洁化。

Floor 56 Posted 2006-07-25 13:54　·　中国湖南娄底新化县电信

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Hehe~ After reading the code modified by brother yuanyong630 for encryption, the defect of executing the FOR command after running the batch processing is corrected, and it runs faster.

Floor 57 Posted 2006-07-26 08:50　·　中国北京电信

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Thank you very much for everyone's support. If you want to talk about the principle, please see
(This is a very good principle written by the moderator willsort)
http://www.cn-dos.net/forum/viewthread.php?tid=21804&fpage=1&highlight=&page=2

Finally, write a statement for everyone

@del %0

Add it to the end of the BAT file. Of course, if the last statement is "EXIT", add it in front of "EXIT"! See what happens!

Floor 58 Posted 2006-07-26 10:08　·　中国广西玉林博白县电信

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Originally posted by yuanyong630 at 2006-7-26 08:50:
Thanks everyone for your support. For the principle, please see
(This is a very good principle written by moderator willsort)
http://www ... %0 should refer to the batch processing itself, but directly using %0 only has the file name, and you need to add the .bat (del %0.bat) extension later to be effective

Floor 59 Posted 2006-07-26 10:10　·　中国北京电信

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@del %0
That is to delete the BAT file to achieve the effect of automatically deleting itself after running once, which is sometimes used

Floor 60 Posted 2006-07-26 10:47　·　中国广东深圳天威有线宽带(关内)

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Thanks, in the learning process!!!

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