Reinstall Azure Windows to Linux System - NETSEC

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Sunday, December 11, 2022

Reinstall Azure Windows to Linux System

This post is to show you a way to convert your Windows machine to a Linux machine using a bat script file. 




Steps

After you created your Windows VM and you RDP into it, you can follow the steps below to get it converted to a linux. 

1 Download win32loader.bat from  萌咖的脚本 备份


file url: https://od.liusy.eu.org/e5/scripts/win32loader.bat

win32loader.bat's content:

@ECHO OFF&@PUSHD %~DP0 &TITLE Win32Loader
setlocal enabledelayedexpansion
::Author MoeClub.org
color 87
cd.>%windir%\GetAdmin
if exist %windir%\GetAdmin (del /f /q "%windir%\GetAdmin") else (
echo CreateObject^("Shell.Application"^).ShellExecute "%~s0", "%*", "", "runas", 1 >> "%temp%\Admin.vbs"
"%temp%\Admin.vbs"
del /s /q "%temp%\Admin.vbs"
exit /b 2)
cls
echo * Init Win32Loader.
set download=0
set try_download=1
set URL=https://api.moeclub.org/redirect/loader
:InitCheck
mkdir "%SystemDrive%\win32-loader" >NUL 2>NUL
if exist "%SystemDrive%\Windows\System32\WindowsPowerShell" (
set use_ps=1
) else (
set use_ps=0
echo Not found PowerShell.
)
:Init
if %use_ps% equ 1 (
goto InitIt
) else (
goto InitFail
)
:InitIt
set try_download=0
call:DownloadFile "!URL!/g2ldr/g2ldr","%SystemDrive%\g2ldr"
call:DownloadFile "!URL!/g2ldr/g2ldr.mbr","%SystemDrive%\g2ldr.mbr"
call:DownloadFile "!URL!/g2ldr/grub.cfg","%SystemDrive%\win32-loader\grub.cfg"
goto InitDone
:InitFail
echo.
echo Please download them by yourself.
echo '%SystemDrive%\g2ldr'
echo -- !URL!/g2ldr/g2ldr
echo '%SystemDrive%\g2ldr.mbr'
echo -- !URL!/g2ldr/g2ldr.mbr
echo '%SystemDrive%\win32-loader\grub.cfg'
echo -- !URL!/g2ldr/grub.cfg
echo Press [ENTER] when you finished.
pause >NUL 2>NUL
goto InitDone
:InitDone
if !try_download! equ 0 (
set InitOption=InitFail
) else (
set InitOption=Init
)
if not exist "%SystemDrive%\g2ldr" goto !InitOption!
if not exist "%SystemDrive%\g2ldr.mbr" goto !InitOption!
if not exist "%SystemDrive%\win32-loader\grub.cfg" goto !InitOption!
:Image
echo.
echo * Please select initrd mode.
echo     [1] Online download
echo     [2] Local file
choice /n /c 12 /m Select:
if errorlevel 2 goto LocalMode
if errorlevel 1 goto OnlineMode
goto Image
:OnlineMode
echo.
echo * Please select source.
echo     [1] by MoeClub [Linux](Debian, DHCP or VNC Support)
echo     [2] by MoeClub [Windows](Win8.1EMB, DHCP or VNC Support)
echo     [3] by Yourself
choice /n /c 1234 /m Select:
if errorlevel 3 goto Yourself
if errorlevel 2 goto MoeClub_Win8.1EMB
if errorlevel 1 goto MoeClub_Linux
goto OnlineMode
:Yourself
echo.
echo if 'initrd.img' URL is 'https://api.moeclub.org/redirect/loader/Debian/initrd.img', 
echo Please input 'https://api.moeclub.org/redirect/loader/Debian'.
set /p IMG_URL_TMP=URL :
if defined IMG_URL_TMP (
set IMG_URL=%IMG_URL_TMP%
goto Download
) else (
goto MoeClub
)
:MoeClub_Win8.1EMB
set IMG_URL=https://api.moeclub.org/redirect/loader/Win8.1EMB
set INITRD_SHA1=0032B38A6E0C3EC9CC2E3FDCC68C7CC394ED68EA
set VMLINUZ_SHA1=C84BF89869868B0325F56F1C0E62604A83B9443F
goto Download
:MoeClub_Linux
set IMG_URL=https://api.moeclub.org/redirect/loader/Debian
set INITRD_SHA1=899F9F00A4932827A92D58583734647E4A6BC0D4
set VMLINUZ_SHA1=85DA55C0C03BA698BF7F4184961F4E2E6DCA36F3
goto Download
:Download
if %use_ps% equ 1 (
echo.
echo Downloading 'initrd.img'...
call:DownloadFile "!IMG_URL!/initrd.img","%SystemDrive%\win32-loader\initrd.img"
call:CheckFile "%SystemDrive%\win32-loader\initrd.img"
call:CheckSUM "%SystemDrive%\win32-loader\initrd.img","%INITRD_SHA1%"
echo Downloading 'vmlinuz'...
call:DownloadFile "!IMG_URL!/vmlinuz","%SystemDrive%\win32-loader\vmlinuz"
call:CheckFile "%SystemDrive%\win32-loader\vmlinuz"
call:CheckSUM "%SystemDrive%\win32-loader\vmlinuz","%VMLINUZ_SHA1%"
set download=1
) else (
echo Not support online download, auto change Local initrd.
goto LocalMode
)
:LocalMode
if !download! equ 0 (
echo.
echo Please put 'initrd.img' and 'vmlinuz' to '%SystemDrive%\win32-loader' .
echo Press [ENTER] when you finished.
pause >NUL 2>NUL
)
:Done0
set download=0
if exist "%SystemDrive%\win32-loader\initrd.img" (
goto Done1
) else (
echo Not found '%SystemDrive%\win32-loader\initrd.img' .
goto LocalMode
)
:Done1
set download=0
if exist "%SystemDrive%\win32-loader\vmlinuz" (
goto Done
) else (
echo Not found '%SystemDrive%\win32-loader\vmlinuz' .
goto LocalMode
)
:Done
echo.
echo Press [ENTER] to continue...
echo IT WILL REBOOT IMMEDIATELY
pause >NUL 2>NUL
echo.
call:CheckFile "%SystemDrive%\g2ldr"
call:CheckFile "%SystemDrive%\g2ldr.mbr"
call:CheckFile "%SystemDrive%\win32-loader\grub.cfg"
call:CheckFile "%SystemDrive%\win32-loader\initrd.img"
call:CheckFile "%SystemDrive%\win32-loader\vmlinuz"
call:CheckSUM "%SystemDrive%\g2ldr","2FCB1009A64C127AD3CC39FF0B5E068B38CBA772"
call:CheckSUM "%SystemDrive%\g2ldr.mbr","29401C8BC951F0AEFD30DC370A3797D1055D64B4"
call:CheckSUM "%SystemDrive%\win32-loader\grub.cfg","58C499EFEE7E60790B3FE2166B536C04B6717B14"
set id={01234567-89ab-cdef-fedc-ba9876543210}
bcdedit /create %id% /d "Debian GUN/Linux" /application bootsector >NUL 2>NUL
bcdedit /set %id% device partition=%SystemDrive% >NUL 2>NUL
bcdedit /set %id% path \g2ldr.mbr >NUL 2>NUL
bcdedit /displayorder %id% /addlast >NUL 2>NUL
bcdedit /bootsequence %id% /addfirst >NUL 2>NUL
shutdown -r -t 0
:CheckSUM
for /f "delims=: tokens=2" %%i in ('powershell.exe "& {Get-FileHash -Algorithm SHA1 -Path %1|Format-List -Property HASH}"') do (set tmp_var=%%i)
set var=%tmp_var:~1%
if "%var%" == %2 (
echo Check %1 SHA1 OK.
) else (
if "%var%" == "CommandNotFoundException" (
echo Check %1 SHA1 SKIP.
) else (
echo Check %1 SHA1 FAIL.
call:ErrorExit
)
)
GOTO:EOF
:CheckFile
if not exist %1 (
echo Not found %1 .
call:ErrorExit
)
GOTO:EOF
:DownloadFile
powershell.exe -command "& {[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $client = new-object System.Net.WebClient; $client.DownloadFile('%1','%2')}" >NUL 2>NUL
GOTO:EOF
:ErrorExit
echo. 
echo Error, Clear CACHE...
del /S /F /Q "%SystemDrive%\g2ldr" >NUL 2>NUL
del /S /F /Q "%SystemDrive%\g2ldr.mbr" >NUL 2>NUL
rd /S /Q "%SystemDrive%\win32-loader" >NUL 2>NUL
echo Press [ENTER] to exit.
pause >NUL 2>NUL
exit 1
GOTO:EOF



2 run win32loader.bat as an administrator


3 You might need to press enter to get into next option to select

Chosse 1 twice . One for "Online download", and second is for "by MoeClub [Linux] (Debian, DHCP or VNC Support)" this option. 



4 It will auto download initrd.img file and vmlinuz file.

After all downloading done, press enter to reboot system




Log in using SSH Client


You might need to wait 10-15 minutes to have whole system fully converted to Linux and booted it up. 
 
Before you connect to it, please make sure your firewall opened port 22 for SSH connection.




Username: root
Password: MoeClub.org






References










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