Subject: 
         Hacking Server: A Beginner's Guide (¤¤¤åª©)
   Date: 
         Wed, 09 Jul 1997 01:01:41 +0800
   From: 
         Authur Chen 
     To: 
         HC Mailing List 


¨ÍªA¾¹Àb«È¤Jªù     

                  Lord Dredd ­ìµÛ    Arthur Chen Ķ

                 Hacking Server: A Beginner's Guide


«e¨¥:

    §Ú¨C¤Ñ¦Ü¤Ö³£·|³Q­è¾Ç²ß¤J«Iªº¤H (beginning hackers)°Ý°_¦P¼Ëªº°ÝÃD¤­¦¸¥H¤W:
"§Ú­n¦p¦ó hack?" , "¬O§_¦³¿ìªk¤J«Iºô¯¸ (web site)?"  ¶â! ¨S¿ù! ¬O¦³!¦Ó¥B¤£¥u
¨º»ò¤@ºØ, ¨Æ¹ê¤W¤J«Iºô¯¸ªº¤èªk¦Ê¦ÊºØ! ³oÃä§Ú­n´£¥X´XºØ¤èªk,¦nÅýªì¾ÇªÌ¯àª¾¹D±q
¦ó³BµÛ¤â! ¨C¤@¦ì Hacker ³£¦³¦U¦Û¤J«Iªº¤èªk, ¦ý¬O¤J«I web ©M ftp¨ÍªA¾¹«o¬O³Ì²
³æªº¤èªk¤§¤@! ¦b¦¹§Ú­º¥ý°²©w§A¤w¸g¹ï¬Y¨Ç UNIX §@·~¨t²Î©Mºô¯¸ (web server) ªº¹B
§@¦³¤F°ò¦ªºª¾ÃÑ,¦ý¬O§Ú¤]·|µy·L´£¤@¤U³o¤è­±ªºªF¦è¦nÅý¨º¨Ç¤£ª¾¹Dªº¤H¬Ý¤@¤U!


²Ä¤@³¡¥÷: ²©ö UNIX «ü¥O
 
    ¤j³¡¥÷¦b DOS ¤W¨Ï¥Îªº«ü¥O¦b UNIX ¤Î Linux ¤W³£¦³¹ïµ¥ªº«ü¥O,©³¤U¦C¥Xªº¬O¦b
¨Ï¥Î SHELL±b¸¹ (shell account)®É³Ì¥D­nªº¤@¨Ç«ü¥O:

HELP=HELP
COPY=CP
MOVE=MV
DIR=LS
DEL=RM
CD=CD

    ­n¬Ý½Ö¦P®É¤]¦b¨t²Î¤W§A¥i¥HÁä¤J WHO «ü¥O,­nª¾¹D¨t²Î¤W¬Y¤@¦ì¨Ï¥ÎªÌªº¸ê®Æ, ¥i
¥HÁä¤J FINGER  , ³o¨Ç°ò¥»ªº UNIX «ü¥O¥i¥HÅý§A±o¨ì§A¥¿¨Ï¥Î¨t²Îªº¸ê°T!

²Ä¤G³¡¥÷: ¯}¸Ñ±K½X (Cracking Passwords)

    ¦b UNIX ¨t²Î¤W, ©Ò¦³¨t²Î¨Ï¥ÎªÌªº±K½X³£¦s©ñ¦b¤@­ÓÀɮפ¤!³o­ÓÀɮ׳QÂ\¦b /etc
³o­Ó¥Ø¿ý©³¤U, ¥¦ªºÀɦW´N¥s°µ passwd, §Ú´±¥´½ä! §A¤@©w¦b·Q»¡ :" ¦n! §Ú©Ò­n°µªº´N
¬O§ì¥X³o­Ó¥s°µ /etc/passwd ªºÀÉ®×, µM«á©O§Ú´N¬O­ÓÀb«È¤F!!!" ¨þ!¦pªG§A³o»ò·Q, ¨º
§A´N¦º©w¤F (dead wrong)! ¦b passwd ÀÉùØ,©Ò¦³±b¸¹ªº±K½X³£¤w¸g¸g¹L­«·s½s½X (encrypted)
¹L¤F! ³o¨Ç±K½X¬O¸g¹L©Ò¿×ªº "³æ¦V½s½X" (one-way encrypted),¤]´N¬O»¡§A¨S¦³¿ìªk±N¥¦
­Ì¸Ñ½X (¤Ï¦V¸Ñ½X decrypt), ¦ý¬OÁÙ¬O¦³µ{¦¡¥i¥HÅý§A±o¨ì³o¨Ç­ì©lªº±K½X!¥Ø«e§Ú§ä¨ì³Ì
¦nªº¯}¸Ñ±K½Xªºµ{¦¡¥s°µ "Cracker Jack",³o­Óµ{¦¡¨Ï¥Î¤@­Ó¥]§t¼Æ¤d¦rªº¦r¨åÀÉ (dictionary
file), ¥¦·|§â¦r¨åÀÉùتº¨C­Ó¦r¥ý¨ú¥X½s½X (encrypted),µM«á¦A§â¸g¹L½s½X«á±o¥Xªº­È
(encrypted forms) ¥Î¨Ó©M passwd ÀÉùتº±K½X (·íµM¬O¸g¹L encrypted ªº±K½X)¤@¤@¤ñ
¹ï, ¤@¥¹µo²{¦³¬Û¦Pªº, µ{¦¡´N·|°¨¤W³qª¾§A! Cracker Jacker ¥i¥H¦b§Úªººô¯¸¤¤§ä¨ì:

http://www.geocities.com/Silicon Valley/9185 
(ĶªÌ«ö: §Ú¥h§ä¹L¤F,¦n¹³¨S¦³! «ØÄ³¥h°ê¤ºªº¯¸§ä!)

    ¦r¨åÀÉ (wordlists) ¥i¥H¦b¤U­±³o­Ó ftp ¯¸§ä¨ì:

ftp://sable.ox.ac.uk/pub/wordlists

³q±`§Ú·|¤W¨ì¯¸¤WµM«á¨ì American ¥Ø¿ý¤U¥h§ì¦r¨åÀÉ, ¤@¥¹§A¨ì¤F¨º,§ì¤U³o­ÓÀÉ:

dic-0294.tar.Z

¤j·§ 4 MB, ­n¥Î³o­ÓÀÉ¥²»Ý¥ý¸ÑÀ£ÁY, §A¥i¥H¥Î Gzip (DOS)©ÎªÌ Winzip (windows),
¸ÑÀ£ÁY«á¤j¬ù¬O¤@­Ó 8 MB ¥ª¥kªº¯Â¤å¦rÀÉ,§A³Ì¦n¬O§â¥¦Â\¦b¯}¸Ñµ{¦¡¦P¼Ëªº¥Ø¿ý¤U,
­nª¾¹D«ç»ò¥Î Cracker Jacker,ŪŪ¤º§t¦bµ{¦¡ùتº»¡©úÀÉ®×´N¥i¥H¤F!


²Ä¤T³¡¥÷ §xÃøªº³¡¥÷ (§ä¥X±K½XÀÉ)

    ºI¦Ü¥Ø«e¬°¤î§Ú½Íªº³£¬O¤J«I¨ÍªA¾¹Â²³æªº³¡¥÷,²{¦b­n¶i¤J¸û§xÃøªº³¡¥÷¤F! «Ü©ú
Å㪺, ¦pªG¨t²ÎºÞ²zªÌ¦³¨º»ò¤@­ÓÀɮצs©ñ±K½X,§A·Q¥L·|¨º»ò²²³æ³æªº´NÂ\¦b¨ºùص¥
§A¨Ó¨ú¥Î¶Ü??? §A¥²»Ý§ä­Ó¦n¤èªk¤£¥Î¶i¤J¨t²Î (without logging into the system)
´N¥i¥H®³¨ì¨t²Îªº±K½XÀÉ /etc/passwd ! ³oÃ䦳¨â­Ó¤èªk¥i¥H¸Õ¸Õ, ©Î³\¥i¥H¦¨¥\!
³q±` /etc ³o­Ó¥Ø¿ý¦b FTP ¤W¨Ã¨S¦³³Qº¾¦í, §A¥i¥H¥Î FTP client µ{¦¡¥H anoymously 
°Î¦W±b¸¹¥ýñ¤J¨t²Î, µM«áÀ˹î¤@¤U /etc ¥Ø¿ý¤Uªº passwd ÀÉŪ¨ú¬O§_¦³³Q³]­­,¦pªG¨S
¦³¹ï anoymously ±b¸¹³]­­, ¨º»ò´N§ì¤U¨Óª½±µ¶] Cracker Jacker! ¦pªG¦³³]­­¨º»ò´N¸Õ¸Õ
B ­p¹º (Plan B)! ¦b¬Y¨Ç¨t²Î¤W, /cgi-bin ¥Ø¿ý¤U·|¦³­Ó¥s PHF ªºÀÉ®×,¦pªG§A·Ç³Æ¤J«I
ªº¹q¸£¥D¾÷¦³ªº¸Ü¨º»ò§A´NºÖ®ð°Õ! PHF ¤¹³\¨Ï¥ÎªÌ¹ïºô¯¸¨t²ÎùتºÀÉ®×°µ»·ºÝŪ¨ú! (·í
µM¤]¥]§t /etc/passwd ¦b¤º) ­n¥Î³o­Ó¤èªk¥i¥H¦b§AªºÂsø°¾¹ùØÁä¤J³o­Ó :

URL:http://xxx.xxx.xxx/cgi-bin/phf?Qalias=x%0a/bin/cat%20/etc/passwd

ùØÀY xxx.xxx.xxx ´N§â§A­n hack ªººô¯¸¸m´«¤W¥h§Y¥i!

¨Ò¦p: §Ú­n hack ¸t¸ô©ö¤j¾Ç (§Ú¤w¸g hack ¹L¤F) §Ú´N¥Î:
http://www.slu.edu/cgi-bin/phf?Qalias=x%0a/bin/cat%20/etc/passwd

§A¤£¥Î³Â·Ð¦A¥h¸Õ www.slu.edu ¤F! §Ú¤w¸g³qª¾¥L­Ì¦³Ãö¨t²Îªºº|¬}¤F!
³oÃ䦳­Ó´£¥Ü! www.spawn.com ©M www.garply.com

¥H¤Wªº¤èªk¦pªG³£¸Õ¤£³q, ¨º´N¸Õ¸Õ¨ä¥¦§A¯à·Q±o¨ìªº¤èªk¹Æ! ¦pªG©O: §A§ì¨ìªº
passwd ÀÉùØ­±²Ä¤G­Ó³¡¥÷¬O X, ! ©ÎªÌ¬O * , ¨º»ò±K½X´N¤w¸g³QÁôÂð_¨Ó¤F!
ÁôÂ꺥ئaµL«D¬O¥[±j¨t²Î¦w¥þ½}¤F, Á×§K±K½XÀɳQÀb«È©ÎªÌ³Q¨º¨Ç¤£¨üÅwªïªº¤Hª«¥ô·N¨ú±o!
¤£©¯ªº!¨Ã¨S¦³¿ìªk¥i¥H§¹¥þ±N±K½XÀÉÂð_¨Ó! ³q±`·|¦³¥¼¸gÁôÂ꺱K½X³Æ¥÷Àɦs¦b¨t²ÎùØ!
¸Õ¸Õ§ä§ä¬Ý³o¨ÇÀÉ®×: /etc/shadow ©Î¨ä¥¦Ãþ¦üªºÀÉ®×!


²Ä¥|³¡¥÷: ñ¤J "§Aªº" ·s Shell

    OK! ³oÃä¬O§A§â¤W­±¨¯­W±o¨Óªº passwd ¤Î¯Ó®É¶O¤u Cracker Jack
«á±o¨ìªº±b¸¹±K½X®³¨Ó¨Ï¥Îªº®É­Ô¤F!!! ¥´¶}§Aªº telnet client µ{¦¡, telnet
¨ì§A·Ç³Æ¤J«Iªº¨ÍªA¾¹¥h§a (¨Ò¦p: www.slu.edu)!

·í§A³s¨ì¯¸¤W«á­º¥ý§A¥i¯à·|¬Ý¨ì³o­Ó¨ÍªA¾¹©Ò¨Ï¥Î§@·~¨t²Îªº¤@¨Ç¸ê°T 
(³q±`¬O UNIX, linux, aix, irix, ultrix, bsd ©Î¬Æ¦Ü¬O DOS ©MVAX/Vms),
µM«á¦b login ¿Ã¹õ¥X²{®É, ª½±µ¦b¨t²Î­n¨D login ªº¦a¤èª½±µÁä¤J§A©Ò±o¨Óªº±b
¸¹±K½X§Y¥i! ³o®É­Ô§A´N¥i¥H¥Î§A©Ò¦³ªº UNIX ª¾ÃÑ­n¨t²Î°µ§A·Q­n°µªº¨Æ¤F!
¦ý¬O¤Á°O: Hacking ¨Ã¤£¬O­n´²¼·¯f¬r©ÎªÌ¬O¯}Ãa§O¤Hªº¹q¸£¨t²Î! Hack
¬O¥H§Aªºª¾ÃѨӼW¶iª¾ÃÑ! À´¶Ü!?


²Ä¤­³¡¥÷: µ¹·sÂA¤Hªº»Ýª¾

     ¦b§A¦¨¬°¤@¦W¯u¥¿ªºÀb«È¤§«e,§A¥²»Ý¥ý§Ë²M·¡©Ò¿×Àb«Èªº©w¸q¥H¤Î·í¤@¦W¦³¹D¼w
ªºÀb«È! ¦pªG§A¥u¬O­è¾ÇµÛ·í¤@¦WÀb«È, ¨º»ò§A³Ì¦n¥ý¥ý¼ô±x UNIX Àô¹Òªº¹B§@,µM«á¨ì
¹Ï®ÑÀ]§äÂI¦³Ãöºô¸ô¤W§@·~¨t²Î¦p¦ó¹B§@ªº®Ñ¨Ó¬Ý¬Ý!©ÎªÌ¨ì®Ñ©±§äÂIºô¸ô¦w¥þ¤è­±ªº®Ñ
ŪŪ! ³q±`³o¤è­±ªº®Ñ¹ïÀb«È­Ì¦p¦ó¯}¸Ñ¨t²Î³£·|¦³¤¶²Ð!§A¤]¥i¥H±qùØ­±±o¨ì¤£¤Ö§U¯q!

ĶªÌ«ö: ³o¥÷ÀÉ®×¼g±o²LÅã©öÀ´! ¦ý¬OÁ¿ªº¦n¹³¤Ó "¤Jªù" ¤F,
¨Ã¨S¦³°µ«Ü²`¤Jªº±´°Q!¥H¤W¨â­Ó¤èªk§Ú¸ÕµÛ¥h hack ¤@¨Ç¯¸¥x, ¦ý¬O¦¨¥\ªº¾÷²v«Ü§C! «Ü¦Ç¤ß!
¤£¹L¹ï¤@­Óªì¾ÇªÌ«o¬O "±Ò»X" ªº¦n¤å¥ó! §Ú´N¬OŪ³o½g¤å³¹¶}©l°_¤âªº!

³oÃä¹ï passwd file ¦A°µÂI»¡©ú, ³q±`¤@¥÷±K½XÀɮ榡¦p¤U:

root:1234aaab:0:1:Operator:/:/bin/csh
nobody:*:12345:12345::/:
daemon:*:1:1::/:
sys:*:2:2::/:/bin/csh
sun:123456hhh:0:1:Operator:/:/bin/csh
bin:*:3:3::/bin:
uucp:*:4:8::/var/spool/uucppublic:
news:*:6:6::/var/spool/news:/bin/csh
audit:*:9:9::/etc/security/audit:/bin/csh
sync::1:1::/:/bin/sync
sysdiag:*:0:1:Old System
Diagnostic:/usr/diag/sysdiag:/usr/diag/sysdiag/sysdiag
sundiag:*:0:1:System
Diagnostic:/usr/diag/sundiag:/usr/diag/sundiag/sundiag
tom:456lll45uu:100:20::/home/tom:/bin/csh
john:456fff76Sl:101:20:john:/home/john:/bin/csh
henry:AusTs45Yus:102:20:henry:/home/henry:/bin/csh
harry:SyduSrd5sY:103:20:harry:/home/harry:/bin/csh
steven:GEs45Yds5Ry:104:20:steven:/home/steven:/bin/csh
+::0:0:::

¨ä¤¤¥H ":" ¤À¦¨´X­ÓÄæ¦ì, ©³¤U¥H tom:456lll45uu:100:20:tom
chang:/home/tom:/bin/csh ¬°¨Ò:

    User Name: tom
     Password: 456lll45uu
      User No: 100
     Group No: 20
    Real Name: tom chang
     Home Dir: /home/tom
        Shell: /bin/csh

§A¥i¥Hµo²{¤W­±½Ñ¦p nobody, daemon, sys, bin, uucp, news, audit, sysdiag,
sundiag µ¥ªº±K½XÄæ¦ì³£¬O * ´N¬O»¡¥¦­Ìªº±b¸¹¤w¸g³QÃö±¼¤F!¨S¿ìªk¥H³o¨Ç±b¸¹Ã±¤J¨t²Î¤F!

¤@¯ë¤@­Ó¨t²Î²Ä¤@¦¸¦w¸Ë®É·|¦³¤@¨Ç default ±b¸¹©M±K½X:

ACCOUNT              PASSWORD
-----------          ----------------
root                 root
sys                  sys / system / bin
bin                  sys / bin
mountfsys            mountfsys
adm                  adm
uucp                 uucp
nuucp                anon
anon                 anon
user                 user
games                games
install              install
reboot           µ¹ "command login" ¥Îªº
demo                 demo
umountfsys           umountfsys
sync                 sync
admin                admin
guest                guest
daemon               daemon

¨ä¤¤ root mountfsys umountfsys install (¦³®É­Ô sync¤]¬O) µ¥³£¬O
root level ±b¸¹, ¤]´N¬O¾Ö¦³ sysop (¨t²ÎºÞ²zªÌ) ªºÅv­­, §¹¥þªºÅv­­!!!
·í§A¹Á¸Õñ¤J¬Y¨Ç¨t²Î®É³o¨Ç­ì©l±b¸¹¤Î±K½X³£¬O«Ü¦nªº¤è¦V,¯S§O¬O¦pªG¸I¨ì¨º¨Ç
¤Ö®Úµ¬ªº¨t²ÎºÞ²zªÌ, ¼K¼K! ·d¤£¦n§A´N²ö©ú¨ä§®·í¤F root user ¤F!!!


³Ì«á§Ú­n»¡©ú¤@ÂI: §Ú¤£¬OÀb«È°ª¤â, ¦³°ÝÃD¤£­n°Ý§Ú, °Ý§Ú§Ú¤]¤£À´!½Ķ³o½g¤å
³¹¥u¬O¤À¨É¤@¤U¤ß±o! §Æ±æ¦U¦ì¥ý¶i¦h¦h¤Á·b! ³oÃä§Ú­n¦A¤¶²Ð¤@½g¤Jªùªº¤å¥ó:

UNIX: A Hacking Tutorial  Àb«È¾ÉŪ  by Sir Hackalot

¼g±o«Ü¤£¿ù, ­ì¤å»áªø, ­þ¤Ñ§Ú¦³ªÅ¤F, ¦A§â¥¦Â½¦¨¤¤¤å! ©M¤j®a¤À¨É!

Hackalot ¥ý¥Í»¡¤F¤@­Ó¬G¨Æ, ¥L»¡¦³¤H´¿»¡³Ìªñ Hacking ¦n¹³¶V¨Ó¶VÃø¤F!
­ì¦]µL¥¦, ¤@¨Ç¨t²Îªºº|¬}¤@¦A³QÀb«È­Ì«õ¥X¨Ó!µM«á¨t²ÎºÞ²zªÌ­Ì¤]¦]À³¦a§âº|°Ê¸É°_¨Ó
, ©ó¬O­n·Q¦A hack ¤]´N¶VÃø! ¦ý¬O§Ú­Ì³o¦ì Sir Hackalot «ù¤Ï¹ï·N¨£, ¥L»¡:

³Ìªñ´X¦~¨Ó¤@¨Ç¹q¸£¹s°â°Ó (Value Added Reseller) ¯É¯É¦¨¥ß,·í¹s°â°Ó©M¶R¥D½Í§´
¥æ©ö«á, °¨¤W´N¥h¬[³]µwÅé, µM«á´Ó¤J UNIX §@·~¨t²Î,µM«á´N¥æµ¹¶R¥D§¹¦¨¥æ©ö, 
¤@¯ëªº¶R¥D¨Ã¤£À´ UNIX ªº¹B§@! µ¥¨ìµo²{¨t²Î¦³º|¬}¦Ó³Q¤J«I®É,«K¤S¦^¹LÀY§ä³o
¨Ç¹s°â°Ó­×¸Éº|¬}, °ÝÃD¬O: ¹s°â°Ó½æµwÅé¶¶«K´Ó¤J§@·~¨t²Î,³o¨Ç§@³nÅé´Ó¤Jªº¤H
¨Ã¤£¤@©w·|¹ï¨t²Î¦w¥þÀ´¨ì­þùØ,¦Ó¶R¥D­Ì¤]¬OÂA¤Ö·|ªá¿ú½Ð±M·~¤H¤h­Ì­t³d¨t²Îªº
ºÞ¸Ì©Mºû­×! ©ó¬O¥G! ¤@¨Çº|¬}ÁÙ¬O¯d¦b¨ºùص¥µÛÀb«È­Ì¤J«I, ...
¤£ª¾±z¹ï³o­Ó¬G¨Æ¬Ýªk¦p¦ó? ·íµM Sir Hackalot ¬O¬ü°ê¤H, Á¿ªº¬O¬ü°ê¬G¨Æ,¥xÆWªºª¬
ªp¥i¯à¤£ºÉ¬Û¦P, ¦ý§Ú·Q¥i¯à¬Û®t¤£¨ì­þùØ! ´N§Ú©Òª¾,¬Y¨Ç¾Ç®Õ¦b±ÄÁʹq¸£®É´N¬O³oºØ
ª¬ªp! ¾Ç®Õ¤è­±­t³d±ÄÁʪº¤H¤£¤@©wÀ´³o¤è­±ªºªF¦è,½æªF¦èªº©O¦¬¨ì©w³æ«á«K¥h¬[³], 
¬[³]§¹«á§â§@·~¨t²Î§Ë¦n¤F¥æµ¹®Õ¤è, ¦ý¬O©O!¬[³]ªº¤H¥i¯à¶È¥u¬O¥~°È­û¥X¨­! µy·LÀ´
±o¦p¦ó install §@·~¨t²Î! ¨ä¥¦ªº´N....,©Ò¥H¥æµ¹¾Ç®Õ®É¥i¯à³s¤@¨Ç³Ì°ò¥»ªº¨t²Î¦w¥þ
®Ú¥»¨S¥hÅU¨ì! §Ú·Q¤@¨Ç¾Ç®Õ³£¬O¦p¦¹¤F!¤@¯ë¤½¥q¦æ¸¹¦b¬[³]ºô¯¸®É¥i¯à¤]¤£·|ÅU¨ì³o»ò¦h!! 

©Ò¥H©O! Hacking is not so difficult as you think, isn't it?