GAQM CEH-001 - Certified Ethical Hacker (CEH)

Which type of attack is port scanning?

Which DNS resource record can indicate how long any "DNS poisoning" could last?

Exhibit:

ettercap –NCLzs --quiet

What does the command in the exhibit do in “Ettercap”?

Exhibit:

Study the following log extract and identify the attack.

Joseph was the Web site administrator for the Mason Insurance in New York, who's main Web site was located at www.masonins.com. Joseph uses his laptop computer regularly to administer the Web site.

One night, Joseph received an urgent phone call from his friend, Smith. According to Smith, the main Mason Insurance web site had been vandalized! All of its normal content was removed and replaced with an attacker's message ''Hacker Message: You are dead! Freaks!

From his office, which was directly connected to Mason Insurance's internal network, Joseph surfed to the Web site using his laptop. In his browser, the Web site looked completely intact. No changes were apparent. Joseph called a friend of his at his home to help troubleshoot the problem. The Web site appeared defaced when his friend visited using his DSL connection. So, while Smith and his friend could see the defaced page, Joseph saw the intact Mason Insurance web site. To help make sense of this problem, Joseph decided to access the Web site using his dial-up ISP. He disconnected his laptop from the corporate internal network and used his modem to dial up the same ISP used by Smith.

After his modem connected, he quickly typed www.masonins.com in his browser to reveal the following web page:

H@cker Mess@ge:

Y0u @re De@d! Fre@ks!

After seeing the defaced Web site, he disconnected his dial-up line, reconnected to the internal network, and used Secure Shell (SSH) to log in directly to the Web server. He ran Tripwire against the entire Web site, and determined that every system file and all the Web content on the server were intact.

How did the attacker accomplish this hack?

One of your junior administrator is concerned with Windows LM hashes and password cracking. In your discussion with them, which of the following are true statements that you would point out?

Select the best answers.

What is a Trojan Horse?

Eve is spending her day scanning the library computers. She notices that Alice is using a computer whose port 445 is active and listening. Eve uses the ENUM tool to enumerate Alice machine. From the command prompt, she types the following command.

For /f "tokens=1 %%a in (hackfile.txt) do net use * \\10.1.2.3\c$ /user:"Administrator" %%a

What is Eve trying to do?

What file system vulnerability does the following command take advantage of?

type c:\anyfile.exe > c:\winnt\system32\calc.exe:anyfile.exe

A user on your Windows 2000 network has discovered that he can use L0phtcrack to sniff the SMB exchanges which carry user logons. The user is plugged into a hub with 23 other systems. However, he is unable to capture any logons though he knows that other users are logging in.

What do you think is the most likely reason behind this?

What tool can crack Windows SMB passwords simply by listening to network traffic?

Select the best answer.

What do Trinoo, TFN2k, WinTrinoo, T-Sight, and Stracheldraht have in common?

In Linux, the three most common commands that hackers usually attempt to Trojan are:

Which of the following are well know password-cracking programs?(Choose all that apply.

Which of the following LM hashes represent a password of less than 8 characters? (Select 2)

You suspect that your Windows machine has been compromised with a Trojan virus. When you run anti-virus software it does not pick of the Trojan. Next you run netstat command to look for open ports and you notice a strange port 6666 open.

What is the next step you would do?

You have retrieved the raw hash values from a Windows 2000 Domain Controller. Using social engineering, you come to know that they are enforcing strong passwords. You understand that all users are required to use passwords that are at least 8 characters in length. All passwords must also use 3 of the 4 following categories: lower case letters, capital letters, numbers and special characters.

With your existing knowledge of users, likely user account names and the possibility that they will choose the easiest passwords possible, what would be the fastest type of password cracking attack you can run against these hash values and still get results?

Which of the following represents the initial two commands that an IRC client sends to join an IRC network?

Exhibit:

You have captured some packets in Ethereal. You want to view only packets sent from 10.0.0.22. What filter will you apply?

As a securing consultant, what are some of the things you would recommend to a company to ensure DNS security? Select the best answers.