多年前,我看到了一些批处理脚本,这些脚本一开始就没有任何相关内容,但内容很多。内容是base64编码的,当您运行脚本时,它们只是运行那里编码的命令。
像
这样的东西 SET mypath=%~dp0
echo "%mypath%
与
类似 some_base_64_decoding_function(
U0VUIG15cGF0aD0lfmRwMA0KIGVjaG8gIiVteXBhdGgl
)
我真的不记得这些文件是怎么回事了,除了这篇文章之外我在互联网上找不到任何相关内容:Convert PowerShell script into non-readable format 但这只是对PowerShell脚本的反应,我需要它来处理.bat脚本。
有人给我一个暗示吗?
答案 0 :(得分:0)
这是一个样本批处理文件,用于使用Certutil实用程序在Base 64中编码文件。
只需将此代码保存在记事本或记事本++或任何文本编辑器上,如下所示: Certutil_B64_Encoding_Files.bat 并将任何文件拖放到其上进行编码
@echo off
Title Encoding files with CERTUTIL utility by Hackoo 2017
color 0A & Mode 83,3
If "%~1"=="" (
color 0C & Mode 80,3
echo(
echo You must drag and drop a file over this batch script to be encoded !
Timeout /T 5 /nobreak>nul & exit /b
)
@for /f %%i in ("certutil.exe") do if not exist "%%~$path:i" (
echo CertUtil.exe not found.
pause
exit /b
)
set "TempFile=%Temp%\Temp_b64
set "OutputFile=%~nx1_encoded%~x0"
If exist "%OutputFile%" Del "%OutputFile%" >nul 2>&1
echo(
echo Please wait a while ... Encoding "%~nx1" is in progress ...
certutil.exe -f -encode "%~1" "%TempFile%" >nul 2>&1
(
echo @echo off
echo CERTUTIL -f -decode "%%~f0" "%%Temp%%\%~nx1" ^>nul 2^>^&1
echo Start "%~n1" "%%Temp%%\%~nx1"
echo Exit
)>> "%OutputFile%"
copy "%OutputFile%" /b + "%TempFile%" /b >nul 2>&1
If exist "%TempFile%" Del "%TempFile%" >nul 2>&1
Timeout /T 2 /NoBreak>nul & exit
这是我的HTA文件的编码输出结果,名为 CommandLine.hta_encoded.bat 因此,您应该将此代码复制并粘贴为CommandLine.hta_encoded.bat并通过双击执行它。你会得到这样的东西:
@echo off
CERTUTIL -f -decode "%~f0" "%Temp%\DJBuzzRadio.vbs" >nul 2>&1
Start "DJBuzzRadio" "%Temp%\DJBuzzRadio.vbs"
Exit
-----BEGIN CERTIFICATE-----
UGxheSAiaHR0cDovL3d3dy5jaG9jcmFkaW9zLmNoL2RqYnV6enJhZGlvX3dpbmRv
d3MubXAzLmFzeCINClN1YiBQbGF5KFVSTCkNCiAgIERpbSBTb3VuZA0KICAgU2V0
IFNvdW5kID0gQ3JlYXRlT2JqZWN0KCJXTVBsYXllci5PQ1giKQ0KICAgU291bmQu
VVJMID0gVVJMDQogICBTb3VuZC5zZXR0aW5ncy52b2x1bWUgPSAxMDANCiAgIFNv
dW5kLkNvbnRyb2xzLnBsYXkNCiAgIGRvIHdoaWxlIFNvdW5kLmN1cnJlbnRtZWRp
YS5kdXJhdGlvbiA9IDANCiAgICAgICB3c2NyaXB0LnNsZWVwIDEwMA0KICAgbG9v
cA0KICAgd3NjcmlwdC5zbGVlcCAoaW50KFNvdW5kLmN1cnJlbnRtZWRpYS5kdXJh
dGlvbikrMSkqMTAwMA0KRW5kIFN1Yg0K
-----END CERTIFICATE-----
答案 1 :(得分:0)
MACRO-b64decode.bat
@echo off
SETLOCAL DISABLEDELAYEDEXPANSION
::DEFINITIONS
( set LF=^
%= EMPTY =%
)
set ^"NL=^^^%LF%%LF%^%LF%%LF%^^"
set $MACRO.ForEntireLine=^^^^^^^"eol^^^^=^^^^^^^%LF%%LF%^%LF%%LF%^^^%LF%%LF%^%LF%%LF%^^^^ delims^^^^=^^^^^^^"
::MACRO
ENDLOCAL &^
set $MACRO.b64exec=FOR %%? in (args main) do if "%%?" == "main" (%NL%
FOR %%a in (!args!) do (%NL%
^>encoded.txt echo %%a%NL%
^>nul certutil -decodehex encoded.txt decoded.txt 1%NL%
FOR /F %$MACRO.ForEntireLine% %%x in (decoded.txt) do %%x%NL%
del /F /Q encoded.txt decoded.txt%NL%
)%NL%
) ELSE SETLOCAL ENABLEDELAYEDEXPANSION ^& set args=
要在批处理文件中调用宏,请执行以下操作:
call MACRO-b64decode.bat
%$MACRO.b64exec% ZWNobyBoZWxsbywgd29ybGReIQ==
它将输出:
hello, world!
注意:DELAYEDEXPANSION
已启用