Metasploitable/John Shadow File
From charlesreid1
This page covers how to use John the Ripper to deal with /etc/shadow files.
Contents
Shadow File
Unix stores information about system usernames and passwords in a file called /etc/shadow. In this file, there are multiple fields (see Reading /etc/shadow page on the wiki for help reading the /etc/shadow file). The most important are the first two: username and password hash.
Example of an /etc/shadow file:
root:$1$/avpfBJ1$x0z8w5UF9Iv./DR9E9Lid.:14747:0:99999:7::: daemon:*:14684:0:99999:7::: bin:*:14684:0:99999:7::: sys:$1$fUX6BPOt$Miyc3UpOzQJqz4s5wFD9l0:14742:0:99999:7::: sync:*:14684:0:99999:7::: games:*:14684:0:99999:7::: man:*:14684:0:99999:7::: lp:*:14684:0:99999:7::: mail:*:14684:0:99999:7::: news:*:14684:0:99999:7::: uucp:*:14684:0:99999:7::: proxy:*:14684:0:99999:7::: www-data:*:14684:0:99999:7::: backup:*:14684:0:99999:7::: list:*:14684:0:99999:7::: irc:*:14684:0:99999:7::: gnats:*:14684:0:99999:7::: nobody:*:14684:0:99999:7::: libuuid:!:14684:0:99999:7::: dhcp:*:14684:0:99999:7::: syslog:*:14684:0:99999:7::: klog:$1$f2ZVMS4K$R9XkI.CmLdHhdUE3X9jqP0:14742:0:99999:7::: sshd:*:14684:0:99999:7::: msfadmin:$1$XN10Zj2c$Rt/zzCW3mLtUWA.ihZjA5/:14684:0:99999:7::: bind:*:14685:0:99999:7::: postfix:*:14685:0:99999:7::: ftp:*:14685:0:99999:7::: postgres:$1$Rw35ik.x$MgQgZUuO5pAoUvfJhfcYe/:14685:0:99999:7::: mysql:!:14685:0:99999:7::: tomcat55:*:14691:0:99999:7::: distccd:*:14698:0:99999:7::: user:$1$HESu9xrH$k.o3G93DGoXIiQKkPmUgZ0:14699:0:99999:7::: service:$1$kR3ue7JZ$7GxELDupr5Ohp6cjZ3Bu//:14715:0:99999:7::: telnetd:*:14715:0:99999:7::: proftpd:!:14727:0:99999:7::: statd:*:15474:0:99999:7::: snmp:*:15480:0:99999:7:::
Only users with a password hash can log in (if there is a * or a !, they cannot log in).
Unshadow the Shadow
To turn an /etc/shadow file into a normal unix password file, use the unshadow utility (from John the Ripper):
umask 077 unshadow r00tpasswd r00tshadow > r00t4john
Now you can run John the Ripper on the file mypasswd.
Using John to Crack
Single Mode
The procedure for using John is to start in single mode:
# john --single r00t4john Warning: detected hash type "md5crypt", but the string is also recognized as "aix-smd5" Use the "--format=aix-smd5" option to force loading these as that type instead Using default input encoding: UTF-8 Loaded 7 password hashes with 7 different salts (md5crypt, crypt(3) $1$ [MD5 128/128 SSE2 4x3]) Will run 2 OpenMP threads Press 'q' or Ctrl-C to abort, almost any other key for status postgres (postgres) user (user) msfadmin (msfadmin) service (service) 4g 0:00:00:00 DONE (2016-03-25 22:32) 4.761g/s 8092p/s 8114c/s 8114C/s root1913..root1900 Use the "--show" option to display all of the cracked passwords reliably Session completed
Bingo! We have already compromised 4 accounts. These 4 accounts each have a password that is the same as the username.
Wordlist Mode
Now run John with a wordlist and tell it to generate rules from the wordlist 500-worst-passwords.txt:
root@morpheus:~# john --wordlist=/usr/share/wordlists/500-worst-passwords.txt --rules r00tmypasswd Warning: detected hash type "md5crypt", but the string is also recognized as "aix-smd5" Use the "--format=aix-smd5" option to force loading these as that type instead Using default input encoding: UTF-8 Loaded 7 password hashes with 7 different salts (md5crypt, crypt(3) $1$ [MD5 128/128 SSE2 4x3]) Remaining 3 password hashes with 3 different salts Will run 2 OpenMP threads Press 'q' or Ctrl-C to abort, almost any other key for status batman (sys) 1g 0:00:00:01 DONE (2016-03-25 22:34) 0.7042g/s 16403p/s 32874c/s 32874C/s Stupiding..Passwording Use the "--show" option to display all of the cracked passwords reliably Session completed
Bingo, another account compromised by using a list of the 500 worst passwords imaginable.
We have two left to compromise. Attacking with the wordlist rockyou.txt reveals one more:
root@morpheus:~# john --wordlist=/usr/share/wordlists/rockyou.txt --rules r00tmypasswd Warning: detected hash type "md5crypt", but the string is also recognized as "aix-smd5" Use the "--format=aix-smd5" option to force loading these as that type instead Using default input encoding: UTF-8 Loaded 7 password hashes with 7 different salts (md5crypt, crypt(3) $1$ [MD5 128/128 SSE2 4x3]) Remaining 2 password hashes with 2 different salts Will run 2 OpenMP threads Press 'q' or Ctrl-C to abort, almost any other key for status 123456789 (klog)
Flags
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Metasploit any and all resources related to metasploit on this wiki
Category:Metasploit - pages labeled with the "Metasploit" category label MSF/Wordlists - wordlists that come bundled with Metasploit MSFVenom - msfvenom is used to craft payloads Meterpreter - the shell you'll have when you use MSF to craft a remote shell payload.
Category:Security · Category:Metasploit · Category:Kali
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Metasploitable: The Red Team Metasploitable is a virtual machine with baked-in vulnerabilities, designed to teach Metasploit. This set of articles discusses the RED TEAM's tools and routes of attack.
Exploiting MySQL with Metasploit: Metasploitable/MySQL Exploiting PostgreSQL with Metasploit: Metasploitable/Postgres
Exploiting VSFTP Backdoor: Metasploitable/VSFTP SSH Penetration by Brute Force: Metasploitable/SSH/Brute Force SSH Penetration with Keys: Metasploitable/SSH/Keys SSH Penetration with Metasploit: Metasploitable/SSH/Exploits Brute-Forcing Exploiting NFS: Metasploitable/NFS Exploiting DNS Bind Server: Metasploitable/DNS Bind
Metasploitable Services: distcc: Metasploitable/distcc
Metasploitable Apache: Exploiting Apache (with Metasploit): Metasploitable/Apache Exploiting Apache (with Python): Metasploitable/Apache/Python Tor's Hammer DoS Attack: Metasploitable/TorsHammer * Apache DAV: Metasploitable/Apache/DAV * Apache Tomcat and Coyote: Metasploitable/Apache/Tomcat and Coyote
Metasploitable Memory: General approach to memory-based attacks: Metasploitable/Memory Investigating memory data: Metasploitable/Volatile Data Investigation Dumping Memory from Metasploit: Metasploitable/Dumping Memory
Metasploitable Fuzzing: (Have not done much work on fuzzing Metasploitable...)
Category:Security · Category:Metasploit · Category:Metasploitable · Category:Kali
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Metasploitablue: The Blue Team Metasploitable is a virtual machine with baked-in vulnerabilities, designed to teach Metasploit. This set of articles discusses the BLUE TEAM's methods for defending Metasploitable: defending against and responding to intrusions.
Hence the name, Metasploita-blue. Overview: Metasploitable/Defenses Metasploitable/Defenses/Stopping · Metasploitable/Defenses/Detecting
Metasploitable On-Machine Defenses: Linux Volatile Data System Investigation: Metasploitable/Volatile Data Investigation Linux Artifact Investigation: Metasploitable/Artifact Investigation Linux Iptables Essentials: Metasploitable/Iptables Firewall Assurance and Testing: Metasploitable/Firewall Password Assessment: Metasploitable/Password Assessment Standard Unix Ports: Unix/Ports
Netcat and Cryptcat (Blue Team): Metasploitable/Netcat and Metasploitable/Cryptcat Nmap (Blue Team): Metasploitable/Nmap Network Traffic Analysis: Metasploitable/Network Traffic Analysis Suspicious Traffic Patterns: Metasploitable/Suspicious Traffic Patterns Snort IDS: Metasploitable/Snort
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john the ripper password generator and all-around cracking tool.
Testing John: John the Ripper/Benchmarking Using John on Password generation using rules and modes: John the Ripper/Password Generation Installing some useful password rules: John the Ripper/Rules Using John to feed password guesses to Aircrack: Aircrack and John the Ripper John the Ripper on AWS: Ubuntu/Barebones to JtR Getting Passwords from John: John the Ripper/Password Recovery
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