Lifehacker.com had an article the other day that pretty much held your hand on steps to crack a WEP password using BackTrack3. Check it out ::HERE::

via: handlewithlinux.com

A good password has the problem of being difficult to remember. And sometimes you might need to get in to a system where the root password is long forgotten (or left with the system administrator before you).
Luckily there are ways of getting access to systems without having the password. This is of course in a sense also a security risk. That’s why you should always be aware that having unattended physical access to a computer system means the same as having root access to the operating system. Unless the information on a system is encrypted, it’s only as save as the room it’s in.

The method to use to reset the password if you lost the root (or only) password depends on the configuration of your system. But it mostly comes down to two separate tasks:

- get write access to the root partition

- change the password/circumvent control

Here are some things you can try from easy to more complicated. (more…)

An unknown organization is systematically checking for open SIP ports and then trying common extension usernames and passwords. If they find weak passwords, they are then into the PBX and can make thousands of calls in a matter of minutes. Protect yourself. Some were Asterisk and some were SIP-based VoIP PBX. Itappears that the hack has nothing to do with any sort of Asterisk vulnerability, but with insecure passwords set for extensions.

Src: junctionnetworks.com

I had a chance to review the Keycarbon USB Home Mini this week. I’ve been wanting to try one of these to see how they would compare to a PS/2 keyboard logger, PS/2 is still pretty popular as far as cheaper keyboards but the shift in technology is going more towards USB keyboards. I was pretty impressed by the quality of the keylogger and its simple installation.

• Business owners needing to monitor employees
• Parents needing to monitor children
• People who might need backups of things they type (writers etc)
• Private investigators, law enforcement, hackers, James Bond

Why would someone want a hardware keylogger as opposed to a software based one? Well this question has it’s pros and cons:

The pros are:

• It’s dead simple to install , just unplug the keyboard,plug this device in , and plug the keyboard into the device ,that’s it!
• No need for root/admin level permissions to install
• It can be installed on any system that has a USB port (Windows,Mac,Linux etc)
• Since it’s hardware-based it wont be detected by antivirus/malware programs ever
• It picks up EVERYTHING typed, even bios password passwords and log-ons

The cons are:

• Since it doesn’t interact with the operating system it can’t get the name of windows where the text was typed so it makes it a chore to scan the logs for the juicy information
• Easy to prevent logging by just removing the logger form the computer (which most people won’t be aware of anyhow, who actually crawls behind their computer everyday?)
• Recovery of logs might be more difficult because they are stored physically on the device and not sent to a remote location. But if you were able to install it in the first place , then recovering it shouldn’t that much harder.
• If the person has a PS/2 keyboard you can’t use an adapter because the device needs power from the USB port to work

Recovering the logs from the device can be done on any computer even though they offer the software to recover the logs faster, it’s not needed which makes this device a good tool to have in your arsenal. To recover the logs alls you you need to do is open any text editor (notepad etc…) and type in the password (default password is phxlog) and the device goes into menu mode, where you have a few options to choose
you have open so it’s best to open notepad or wordpad or any *nix/MAC equivalent before typing this. This menu will give you various options for the device ,which are:

1. Partial/Full Log download
2. Erase logs (quick or thorough)
3. Setting the default password (alphanumeric only,under 17 chars)
4. Firmware upgrade
5. Diagnostics
6. Speed (that the logs are typed)

Once you choose read the logs it starts auto typing the logs onto whatever window is open has the main focus (which is why you need to open a text editor).  If you don’t like to wait for it to auto-type (you might have days of saved logs) you can get the software to download it in one swoop. The only problem with the software that as of now it’s only compatible with windows.

Detection of the Device:

Because the device doesnt install into the operating system its pretty much insvisible to the normal user. Only a trained computer expert would notice the device it because the only sign it’s there is that it is seen as a USB hub by the OS. It shows up as a “generic 4 port hub Vid_0451&Pid_2046″ Vendor id of 0451 and a product id of 2046, which comes up as a generic Texas instruments device which wont raise many eyebrows. Because it’s a USB 1.1 hub it is possible that it may be discovered if someone plugs a USB 2.0 keyboard inline with it. (They might get a warning message telling them that their device can perform at a higher speed if they use a different port.) But the chances are slim of someone needing to replace their keyboard.

All in all this device is a stable tool to use, it logged with no problems at all with every keyboard/OS i used with it.  Although the price is a little high for most people, it’s well priceless for businesses who need to keep an eye on employees, or a parent who needs to monitor their children’s internet activity. I want to thank Keycarbon for giving me the opportunity to review and test this device. Check out their site for other devices they offer that I didn’t get to review , but are another great alternative to stealth hardware logging.

This is a generic how to, working for all Linux distributions, not only for Ubuntu or Debian or Centos etc etc.

I see a lot of howto’s what are based on the same “story”: boot in “single mode” and type passwd to change the password, but are some systems like Debian and probably others what doesn’t let you get in single mode if you don’t know the root password … so the single mode solution it will not work.

First I will describe you the single mode solution, because the start of this solution is very similar with the next solution what I will present you in the end.
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Enforcing password security with a multiple-user system can be a hassle — users all too often use inadequate passwords. john-the-ripper (also available via most distros) is a password-cracking tool that enables the identification of vulnerable passwords before someone with nefarious intentions finds the weakness.
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BIOS passwords can be add extra layer of security for desktop and laptop computers, and are used to either prevent a user from changing the BIOS settings or to prevent the PC from booting without a password. BIOS passwords can also be a liability if a user forgot their passwords, or if a malicious user changes the password. Sending the unit back to the manufacturer to have the BIOS reset can be expensive and is usually not covered in an a typical warranty. However, there are a few known backdoors and other tricks of the trade that can be used to bypass or reset the BIOS password on most systems.
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Losing your root password isn’t the end of the world, though. You’ll just need to reboot into single user mode to reset it. Here’s how to do it on a typical Ubuntu machine with the GRUB bootloader:

Boot Linux into single-user mode

1. Reboot the machine.
2. Press the ESC key while GRUB is loading to enter the menu.
3. If there is a ‘recovery mode’ option, select it and press ‘b’ to boot into single user mode.
4. Otherwise, the default boot configuration should be selected. Press ‘e’ to edit it.
5. Highlight the line that begins with ‘kernel’. Press ‘e’ again to edit this line.
6. At the end of the line, add an additional parameter: ’single’. Hit return to make the change and press ‘b’ to boot.

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