 Ultimate solution for lost and forgotten passwords |
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Opera Master Password Recovery Screenshots:
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Currently there are 4 decryption methods available:
Dictionary attack. Try every word from a dictionary until the password is found. This attack is the most effective.
Brute-force attack. Guess the password by trying all probable password variants by given character set.
Mask attack. Very helpful if there's any information about the password.
Phrase attack. Useful if a part (or source word) of the password is known.
Once selected a recovery type, you will be prompted for different options on the
next Wizard page.
All options are conditionally split into three groups: dictionary list, password filter, and password mutations.
Dictionary list
In the first group of options, you must set at least one dictionary for the
attack. If the dictionary was created with a DOS program, the option 'Dictionary
file in DOS encoding' must be selected when adding this dictionary to the
list. The program comes with a short English wordlist.
Password filter
To crop unnecessary passwords, you can use two simple filters. If you have
set at least one character in the first 'Include' filter, all passwords
that do not contain that character will be ignored (skipped) by the program. The
second 'Exclude' filter is totally opposite.
Password mutations
The last group of options manages mutations for each password to be
verified. You can set up to three mutation rules: Weak - less number of
mutations and, in its turn, greater verification speed; Strong - for
greater number of mutations, to the prejudice of the speed, and the happy
medium, Default option.
This type of attack is the slowest. It must be used only if other attacks have failed to recover your password. There are 3 group of options here.
Brute-force charset
Brute-force attack assumes using all possible variations from the specified
character range, which is set in the first group of options. You can select and
combine predefined character sets (e.g., Latin characters, numbers or special
characters) or define your own ones. To define your own character set, select
the option 'Custom charset'. This will enable two fields for defining a
custom character set: the first one - for entering ASCII or OEM characters,
second one - for entering non-printable characters. You can save your custom
character set on disk. The program comes with several examples of user-defined
character sets.
Password length and position
The second group of options allows setting the minimum and maximum lengths
of the password to be generated. If the last brute-force attack was interrupted
or stopped, you can resume it from the last position saved by the program (see 'Starting
password' option.)
Distributed attack
This group of options can be useful when you have access to several
computers. In this case, the entire set of characters to be verified, if it is
too large, can be split into portions and attack the password by portions on
several computers at the same time. To implement that, you will need to select
the number of computers participating in the distributed attack (option 'Number
of computers to participate'), select the same settings on all computers,
and assign each computer its serial number (in the combo box 'Password range
for computer'.) When all that is done, you can launch the attack(s).
The entry field is used for setting the mask (rule), by which the program will try to recover the password. If the mask is set correctly, below you will see the range of characters generated by the mask. User-defined masks can be saved on disk. The program also allows generating dictionary by mask.
The password mask consists of static (not
changing) characters and special sets - dynamically changing letters, numbers or
symbols. For example, in the mask 'secret%d(1-100)', the characters 's'
'e' 'c' 'r' 'e' 't' are static, and '%d(1-100)'
is the dynamical set. A dynamical set is marked (start) with % character.
Please refer to the program's manual to get more help on mask syntax.
Phrase attack is an irreplaceable recovery tool when you know a portion of the password or its basic component.
Normally, such cases dispose to using mask
attack; however, it does not always allow coping with the task set forth.
Suppose our password was 'S10wDr1v3r'. Trying to recover such a
complicated password using brute-force attack would be an ungrateful job, even
if you are quite sure that it is based upon the 'slowdriver' phrase.
These are the cases when the phrase attack will rescue you.
With this tool, the program will attempt to recover the original password,
trying all possible combinations founded upon 15 groups of rules (total over 150
rules.) If you enter 'slowdriver' in the field, you will see that the
program has generated several thousands of different combinations upon this
phrase , and one of those combinations will match our password.
If you remember the original password precisely and simply have forgotten the
sequence of the upper-case and lower-case characters in it, you can select the
option 'Use only case mutations'. With this option selected, the program
will generate passwords with all possible combinations of upper-case and
lower-case characters.
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