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The case of an ID theft scam

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An interesting incident happened this past week to a friend – he had his identity stolen. More specifically, someone got a hold of his social security number (SSN), his date of birth (apparently) and his address. What the scammers or their “mules” (a term used to describe criminals who act on behalf of the actual criminal at their behest) did was that they went to the bank and requested to wire a huge sum of money to an account. The neat trick they played was before actually going to the bank they called the Verizon helpdesk and suspended my friend’s phone service. When they reached the bank and showed the bank agent the ID (some sort of a non-standard / fake ID) and gave the SSN to the bank agent, he/she grew suspicious and tried to contact my friend. However, due to Verizon suspending his phone service, the bank agent couldn’t get a hold of my friend. Luckily, the bank agent also sent my friend an email to which he responded promptly. The culprits were arrested and the investigation is still on.
What was quite interesting was, the modus operandi where the criminals know that banks rely on calling the customers if they suspect fraud and they had this covered. Quite intelligent.
So, you know what you need to do if your phone suddenly stops working – check if ID thieves have had a run on you, change all your passwords including email, change your credit card accounts and bank accounts and PINs and place a hold on your credit history with the credit reporting agencies such as Experian, Equifax and TransUnion.

0

Metasploit Veritas BackupExec Dumping

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In metasploit there’s a plugin admin/backupexec/dump. This plugin uses the default credentials to login to Veritas backupexec agent and download an arbitrary file. The catch is it downloads it in the MTF (Microsoft Tape Format) file. You need a utility called NTBackup to restore this file. Metasploit authors have conveniently made this available for us at http://metasploit.com/tools/msbksrc.tar.gz.
However, if you compile this file you get an error:
msqic.c:814: error: conflicting types for ‘bques’
This happens because the function prototype is missing.
Goto line 169 of msqic.c file in the source code and add the following line:
int bques(char);
Once you add this, you should be able to make the client and should be able to extract the file from the .mtf file.

0

Cisco IPSec VPN Client Reason442: Failed to Enable Virtual Adapter

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If you use Windows 8 x64 and when you launch the Cisco VPN Client adapter and you see the following error:
Reason 442: Failed To Enable Virtual Adapter Here’s how to fix it.
Open your command prompt in Administrator mode by right clicking at the left lower corner of the screen and going to “Command Prompt (Administrator)”. You will have to log in as an administrator. Launch registry editor by typing “regedit.exe”. Browse to “HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\CVirtA“. In the DisplayName key, you will see something like @oem8.inf,%CVirtA_Desc%;Cisco Systems VPN Adapter. Edit that to just say Cisco Systems VPN Adapter. Try to connect again by launching the VPN Client. It should work!

0

Echo Mirage and UHooker

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It can get interesting to test the security of thick client applications. If you start debugging you could end up losing a lot of time with not too many results. Of course, time is always at a premium when you pen testing in a week long gig. There are a couple of tools that can really help you to gain insight into a thick client (i.e., an application written in a binary format such as an executable, ActiveX control, flash object, etc.) and communicating to a server using the client/server model.
The need for a proxy to hook into the communications is a prime need and EchoMirage can do a great job of hooking into function calls related to win32 sockets, openssl functions. You have to select an active process for Echomirage to inject into or you can even spawn a process from the menu options in EchoMirage itself. It’s a great tool with a built-in editor so you can edit the traffic. However, sometimes you have to be careful because it’s binary data that you are editing so while editing it is easy to mess up a few flags, etc.
Another great tool is actually a plugin for OllyDbg called UHooker that can let you specify which functions you want to place a hook into. You have to configure a binary editor of your choosing and the functions to be hooked into in a .cfg file. The documentation for Uhooker is located here.

7

Spike Fuzzer linker errors

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I decided to play around with Spike fuzzer and encountered some weird errors during installation. I was using gcc 4.1.2.

gcc -ggdb -o generic_listen_tcp generic_listen_tcp.o dlrpc.o 
dlargs.o spike.o listener.o hdebug.o tcpstuff.o
spike_dcerpc.o base64.o udpstuff.o spike_oncrpc.o -ldl -L. -ldlrpc
/usr/bin/ld: generic_listen_tcp: hidden symbol `__stack_chk_fail_local' in
/usr/lib/libc_nonshared.a(stack_chk_fail_local.oS) is referenced by DSO
/usr/bin/ld: final link failed: Nonrepresentable section on output
collect2: ld returned 1 exit status
make: *** [generic_listen_tcp] Error 1

If you are also getting the same error, I would recommend that you do the following

SPIKE/SPIKE/src$ ./configure

Now open the Makefile in your favorite editor and edit the CFLAGS line to include the following option:

-fno-stack-protector

This is how my CFLAGS line looks like in the Makefile:

CFLAGS = -Wall -funsigned-char -c -fPIC -ggdb -fno-stack-protector

This should make it build fine (I do get a few warnings but that’s cool…it still does not result in a no-build.

0

Pass the hash

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In a pen test, it’s always the race to the finish. Either you get to the domain admin or r00t or you die tryin’! 🙂 But thanks to some real l33t fu by Hernan Ochoa this has only been made easy for you.
The key to pass-the-hash attacks is that Windows NTLM authentication relies on the passing of the right hash to identify you. As long as the right hash is stored in the authenticated session you are who you say you are.
Hernan Ochoa’s Pass-the-hash toolkit (http://oss.coresecurity.com/projects/pshtoolkit.htm) is precisely the tool for that. Once you gain local admin rights on a box, just run the whosthere.exe utility on the box. Mind you, in differing versions of Windows you need some right addresses to pass as parameters. So the first thing to do is goto C:\WINDOWS\system32 and copy the lsasrv.dll file onto your local machine. The pass-the-hash src tar ball, has an IDA Pro script passthehash.idc that you need to run after opening the file in IDA Pro. This will give you the right addresses to pass to whosthere.exe:
whosthere.exe -a -o outputfile.txt

Once you have the hash you could either use iam.exe or winexe (http://eol.ovh.org/winexe/) with pass-the-hash patch from jo-mo-kun (http://www.foofus.net/jmk/tools/winexe), or samba with jomo kun’s pass the hash patch.
Just set the Environment variable SMBHASH to the hash value such as

export SMBHASH="92D887C9910492C3254E2DF489A880E4:7A2EDE4F51B94203984C6BA21239CF63"

Then run winexe as

./winexe -U "Domain\\Username" //192.168.0.1 "cmd.exe"

Of course, you can also expend some time in cracking the LM hashes to get the actual passwords but it isn’t really necessary.

0

Installing mplayerplug-in for Firefox-1.0.4

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I love the site www.big-boys.com but in linux it would not play so I wanted to install a browser plugin that would play wmv files.
Here’s how I went about it. First I installed mplayer using yum (I use FC4 with kernel 2.6.13.2).
yum install mplayer
Make sure the internet connection is present when you run this command.

Then I went to Linux Plugins site to get the mplayerplugin. It redirected me to Mplayer Sourceforge site.

Then I downloaded the source of mplayerplug-in from Sourceforge download page for Mplayerplug-in.
Once I did that then came the main struggle of compiling and getting this to run.

I first untarred the file with command:

tar zxvf mplayerplug-in-3.11.tar.gz
cd mplayerplug-in
./configure –with-gecko-sdk=/usr/include/mozilla-1.7.8/
make

But this resulted in a bunch of errors.
I realized that an extra slash was put in there so I opened the Makefile with vim and removed the extra slash at the end of the string /usr/include/mozilla-1.7.8/ in the Makefile.
Tried to make again but again errors this time around some include files called prtypes.h was missing.

I noticed that in the CFLAGS section of the Makefile there was a space between -I and /usr/include. Deleted those.

So opened the Makefile in vim again and added the string -I/usr/include/mozilla-1.7.8/nspr/ to the CFLAGS section of the Makefile.

Also added -L/usr/lib/firefox-1.0.4/ to the LFLAGS section coz I was getting some linker errors after that. The struggle was not over.

I got a linker error :

/usr/bin/ld: cannot find -lxpcomglue
collect2: ld returned 1 exit status

Changed the -lxpcomglue in Makefile to -lxpcom.
Finally, the compilation and the build were successful. Then the final command
cp mplayerplug-in*.so /usr/lib/firefox-1.0.4/plugins/
And now I have mplayerplug-in live and kicking!

-Rajat.