Deofuscation vbs (cscript.exe)

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Some things that could be useful to debug/deobfuscate a malicious VBS file:

echo

Wscript.Echo "Like this?"

Commnets

' this is a comment

Test

cscript.exe file.vbs

Write data to a file

Function writeBinary(strBinary, strPath)

    Dim oFSO: Set oFSO = CreateObject("Scripting.FileSystemObject")

    ' below lines purpose: checks that write access is possible!
    Dim oTxtStream

    On Error Resume Next
    Set oTxtStream = oFSO.createTextFile(strPath)

    If Err.number <> 0 Then MsgBox(Err.message) : Exit Function
    On Error GoTo 0

    Set oTxtStream = Nothing
    ' end check of write access

    With oFSO.createTextFile(strPath)
        .Write(strBinary)
        .Close
    End With

End Function

Learn & practice AWS Hacking:HackTricks Training AWS Red Team Expert (ARTE) Learn & practice GCP Hacking: HackTricks Training GCP Red Team Expert (GRTE)

Support HackTricks

• Check the subscription plans!

• Join the 💬 Discord group or the telegram group or follow us on Twitter 🐦 @hacktricks_live.

• Share hacking tricks by submitting PRs to the HackTricks and HackTricks Cloud github repos.