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-
- ┌────────────────────────────────────────────────────────────────────────────┐
- │ Cracker Jack, THE Unix Password Cracker │
- └────────────────────────────────────────────────────────────────────────────┘
-
-
- June 1993 Doc's for Cracker Jack v 1.4
-
-
- DISCLAIMER
- ==========
- The copyright of this software is owned by the author, Jackal.
- Please feel free to make copies and share them with your friends.
- I can under no circumstances be held responsible for any consequences
- of your use/misuse of this package, whatever that may be (system crash,
- you going to jail, world war, etc..). Nor can I guarantee any functionality,
- just take it or leave it.
-
-
- What is Cracker Jack?
- =====================
- Cracker Jack is a Unix password checker/cracker, running on PC's.
- As humble as I am, I don't think you'll find other Unix password
- crackers for PC's, who will beat it in speed (if you do, I'll appreciate
- if you let me know).
- It is currently available in 2 versions (for 8086/88 and 80386.
- I've dropped the 286 version, it wasn't significantly faster than
- the 8086 version).
- The 386 version is far faster than the other, please use that, if
- you have a 386 or 486 CPU. Besides, the 386 version has no 640 kb limit,
- so you can load a lot more accounts. The 386 version also runs under
- OS/2 v. 2.0.
- (Special versions for 486 and 586/Pentium might be available in the future.
- Likewise, I might port it to other CPU's on other O/S'es than DOS and
- OS/2, but don't count on it).
-
-
- What's new in Cracker Jack 1.4?
- ===============================
- I finally got that Borland C++ v 3.1, but I'm rather disappointed,
- 'coz in the meantime I've got hold on the GNU C compiler - IT'S GREAT!
- After porting Jack to this compiler, it runs about 8% faster, at least
- on my PC. I believe, however, that the speed increase is varying,
- depending on your CPU type, cache RAM etc. Anyway, it now runs in
- protected mode (and it REQUIRES a 386/486!), so there's no 640 kb limit.
- Thanks to the EMX port of GNU C, it also runs under OS/2 2.0.
- Furthermore, I've (once again) rearranged the account loading and
- sorting algorithm, so there's virtually no startup delay, even when
- loading several thousand accounts.
-
- I have included a sort utility, JSORT. It doesn't have the 64 kb limit
- as DOS SORT has. Currently it doesn't support single crack wordlists,
- but I'm working on that.
-
- JPP can now insert a dot BEFORE the password, with option -dot:0
-
- That's basically it, no real news, but I thought this was worth
- releasing.
-
-
- What's new in Cracker Jack 1.3
- ==============================
- - Rearranged and optimized the account loading/checking routines, thus
- gaining faster loading and space for more accounts per session.
- - Added the -noname switch, which prevents Jack from loading the login
- names into memory, and thus lets you load even more accounts per
- session. The more accounts, the more comparisons/second.
- - In single crack mode, it now checks ALL the accounts with
- same salts as the account being processed. This takes almost no extra
- time, so why not do it? It has given ME some accounts. :)
- - It now checks the keyboard for Ctrl-C, so you don't have to wait eras
- when you wanna abort the session.
- - Status is now only showed when you press a key (and on exit), so you get a
- bigger chance of seeing cracked passwords, before they scroll off the screen.
- - It is now possible to restore an aborted single crack session.
-
-
- Jackal's future plans:
- - Fix JSORT to support single crack wordlists
- - Implement password generator
- - Add 'free crack' option to load accounts with same salts from other
- pwfiles (and/or same pwfile when using the -u option)
- - Implement more options into JPP.
- - Possibly implement the features of JPP into Jack itself, to avoid the
- need of lot of harddisk space for the DOS pipe, especially when you
- use -gecos:8
- - Improve the docs
-
- Files in the archive
- ====================
- The following files are included in the archive:
-
- JACK.EXE Cracker Jack
- JPP.EXE Jack PreProcessor, manipulates words
- JACKPOT.EXE Shows you the passwords cracked so far
- XTRACT.EXE Extracts words from any file
- JSORT.EXE Sorts standard wordfiles (NOT single crack wordlists!)
- JACK14.DOC Hmmm, what can this be? :)
- EMX.EXE *) EMX runtime/system interface for DOS
- EMX.DLL *) EMX runtime/system interface for OS/2
-
- *) Note: Only included in the 386 version.
- Beware, that all executables are NOT the same in the 386
- version as in the 8086 version, although the names are the
- same.
-
-
- How to use Cracker Jack
- =======================
- I guess you'll figure it out yourself, but there are some things that
- might require a word of explanation.
-
- Jack saves all cracked passwords in a file called JACK.POT, in the same
- directory as JACK.EXE. Be aware of this, if you run Jack from a floppy
- (who would do that?), don't write protect it.
- Jack uses this file to check, if any of the passwords were cracked
- previously, and won't try to crack them again. So, please don't delete
- this file (it's readonly for the same reason).
-
- JACKPOT.EXE shows you these passwords.
- Since this is similar to the "validfile" output in previous versions of
- Jack, I have removed this option. Some of you might miss it, but it
- requires a lot of core, which I felt could be better used for cracking
- more accounts.
- JACKPOT.EXE HAS TO BE IN THE SAME DIRECTORY AS JACK.EXE!
-
- With Jack it is possible to crack more than 1 passwd file, without you
- have to combine them into one single. You can even use wildcards.
-
- Every 10 minutes (and upon completion), Jack saves point information to
- a file (RESTORE, unless you specified another name with the -r option).
- In case the system crashes, you don't have to start all over.
- But if you interrupt a session and start a new one, the old information
- is overwritten. Therefore, always rename the file, if you want to use
- it.
-
- The -user option lets you specify the login names or user id's of the
- accounts you want to crack. F.ex. -user:0 would load all accounts with
- root priv's, whereas -user:root would just load the root account itself.
-
- The single crack option (-single) in JACK is used in conjunction with
- the login (-login) and gecos (-gecos:#) options of JPP. F.ex. would
- JPP -gecos:1 -lower pwfile | JACK -stdin -single pwfile
- lowercase each word in the gecos fields and try it on the accounts
- to whom it belongs AND to other accounts with the same salt.
-
- There is one thing, you have to be aware of, when using single crack
- mode; It is not adviced to direct the output from JPP to a file, and
- then use this file as input for Jack. Because Jack does not load the
- accounts it has cracked previously, the inputfile has to provide
- login/gecos words from the UNCRACKED accounts ONLY! Otherwise JACK gets
- out of syncronization, and tries the supplied words on the wrong
- accounts. In other words, if you have cracked some accounts AFTER the
- creation of the inputfile, you have to recreate it with JPP. This is
- also the case if you restore a single crack session.
- If you always PIPE the output from JPP into Jack, there's no problems.
- JPP.EXE HAS TO BE IN THE SAME DIRECTORY AS JACK.EXE!
-
- To illustrate the gecos option of JPP, suppose we have a passwd file
- with the following account:
-
- billy:EncrPassword:123:10:Billy The Kid:/usr/billy:/bin/csh
-
- There are 4 levels of gecos manipulation.
-
- 1: Each word
- e.g. "Billy", "The", "Kid"
- 2: Combination of any 2 words
- e.g. "BillyThe", "BillyKid", "TheBilly", "TheKid" ,...
- 4: Combination of 1 word and up to 2 initials
- e.g. "BillyTK", "BillyKT", "TKBilly", "TBillyK", "BKid" ,...
- 8: Combination of substrings of up to 3 words
- e.g. "BiThKid", "BillKi", "BilTheKi", "TheBillyK", "BTK" ,...
-
- Level 1, 2 and 4 can be added together. F.ex. if you want to get level 1
- and level 4 in one run, specify -gecos:5.
- Level 8 is an outsider; it always includes the other levels as well,
- except that the output from level 8 is never more than 8 chars, to cut
- down disk usage. Speaking of disk usage, remember to set the DOS TEMP
- variable to a disk big enough to store the temporary file, created by
- the DOS pipe (|). Preferrably the disk should be cached as well.
-
- The XTRACT program was created for a specific need I had (to retrieve
- fancy words from a game).
- Usage: XTRACT MYFILE.XXX | SORT | JPP -include > WORDS.XXX
- The reason to pipe it through JPP, is that JPP unique's it's output.
- Another purpose for it, could be if you just had a couple of words
- to pass to Cracker Jack, but didn't want to create a wordfile:
- ECHO secret abc123 haleluja password | XTRACT | JACK -stdin pwfile
-
-
- Known bugs/restrictions
- =======================
- You cannot specify more than one wordfile to JACK (although you
- can to JPP)
-
- You cannot use spaces in the parameters to JPP, but since only
- the 7 lower bits of each char in the password is used, you can
- use char # 160 (á = AltGr+1+6+0) instead. e.g:
- JPP -gecos:4 -dot:1 pwfile | JPP -translate:.á | JACK -stdin -single pwfile
-
- JSORT doesn't support single crack wordlists yet. In these wordlists,
- generated by JPP's -login or -gecos options, there are some strings,
- "***!***", which tells Jack to switch to the next salt. JSORT doesn't
- recognise this string as anything special, and just treats it as a normal
- input line.
-
- ................
-
-
-
- Have phun, Jackal.
-
-
-
- Contacting the author / How to get help / Dist. site
- ====================================================
- The official distribution site for CrackerJack is Freeside, +45-3-122-3119.
- Here you may contact the author, as well as obtain the latest version.
-
- Zephyr, Freeside Sysop.
-
-
-