#include <MsgBoxConstants.au3> ; to declare the Constants of MsgBox
Local $sRegex = "\s*eval\(base64_decode\([^\>]*?\)\);"
Local $sString = " eval(base64_decode("sdsadhsjdbsajdjsadksadsdsadsahsadjsabjdhbasjbdssbsdsansasadsadsadsadsa" & @CRLF & _
"" & @CRLF & _
"" & @CRLF & _
"" & @CRLF & _
"" & @CRLF & _
"" & @CRLF & _
"" & @CRLF & _
"" & @CRLF & _
"dsadsadasddsadsdsasdsdasdssadsdhssbdjdsdsadjsaadksajdk"" & @CRLF & _
"" & @CRLF & _
"" & @CRLF & _
"" & @CRLF & _
"));" & @CRLF & _
"));"
Local $sSubst = "?\>"
Local $sResult = StringRegExpReplace($sString, $sRegex, $sSubst)
MsgBox($MB_SYSTEMMODAL, "Result", $sResult)
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for AutoIt, please visit: https://www.autoitscript.com/autoit3/docs/functions/StringRegExp.htm