John the Ripper免费的开源软件,是一个快速的密码破解工具,用于在已知密文的情况下尝试破解出明文的破解密码软件,支持目前大多数的加密算法,如DES、MD4、MD5等。它支持多种不同类型的系统架构,包括Unix、Linux、Windows、DOS模式、BeOS和OpenVMS,主要目的是破解不够牢固的Unix/Linux系统密码。目前的最新版本是John the Ripper 1.8.0版,针对Windows平台的最新免费版为John the Ripper 1.7.9版。
John the Ripper password cracker, version 1.8.0.6-jumbo-1-bleeding [linux-x86-64-avx] Copyright (c) 1996-2015 by Solar Designer and others Homepage: http://www.openwall.com/john/
#1. Usage: john [OPTIONS] [PASSWORD-FILES] #2. --single[=SECTION] "single crack" mode #3. --wordlist[=FILE] --stdin wordlist mode, read words from FILE or stdin #4. --pipe like --stdin, but bulk reads, and allows rules #5. --loopback[=FILE] like --wordlist, but fetch words from a .pot file #6. --dupe-suppression suppress all dupes in wordlist (and force preload) #7. --prince[=FILE] PRINCE mode, read words from FILE #8. --encoding=NAME input encoding (eg. UTF-8, ISO-8859-1). See alsodoc/ENCODING and --list=hidden-options. #9. --rules[=SECTION] enable word mangling rules for wordlist modes #10. --incremental[=MODE] "incremental" mode [using section MODE] #11. --mask=MASK mask mode using MASK #12. --markov[=OPTIONS] "Markov" mode (see doc/MARKOV) #13. --external=MODE external mode or word filter #14. --stdout[=LENGTH] just output candidate passwords [cut at LENGTH] #15. --restore[=NAME] restore an interrupted session [called NAME] #16. --session=NAME give a new session the NAME #17. --status[=NAME] print status of a session [called NAME] #18. --make-charset=FILE make a charset file. It will be overwritten #19. --show[=LEFT] show cracked passwords [if =LEFT, then uncracked] #20. --test[=TIME] run tests and benchmarks for TIME seconds each #21. --users=[-]LOGIN|UID[,..] [do not] load this (these) user(s) only #22. --groups=[-]GID[,..] load users [not] of this (these) group(s) only #23. --shells=[-]SHELL[,..] load users with[out] this (these) shell(s) only #24. --salts=[-]COUNT[:MAX] load salts with[out] COUNT [to MAX] hashes #25. --save-memory=LEVEL enable memory saving, at LEVEL 1..3 #26. --node=MIN[-MAX]/TOTAL this node's number range out of TOTAL count #27. --fork=N fork N processes #28. --pot=NAME pot file to use #29. --list=WHAT list capabilities, see --list=help or doc/OPTIONS #30. --format=NAME force hash of type NAME. The supported formats can be #31 seen with --list=formats and --list=subformats