ssize_t recv(int sockfd, void *buf, size_t len, int flags)
{
ssize_t (*orig_recv)(int sockfd, void *buf, size_t len, int flags);
orig_recv = dlsym(RTLD_NEXT, "recv");
ssize_t (*orig_send)(int sockfd, const void *buf, size_t len, int flags);
orig_send = dlsym(RTLD_NEXT, "send");
ssize_t r = orig_recv(sockfd, buf, len, flags);
printf("READ %d %s\n", r, buf);
if (strstr(buf, "what would you like")) {
len = 100;
//printf("requesting 2nd lin\n");
//ssize_t r = orig_recv(sockfd, buf, len, flags);
//printf("READx2 %d %s\n", r, buf);
printf("REQUESTING KEY \n");
ssize_t x = orig_send(sockfd, msg, strlen(msg), flags);
r = orig_recv(sockfd, buf, len, flags);
printf("read challenge %d %s\n", r, buf);
char *xc = buf + 11;
memcpy(mem, xc, 5);
printf ("chal = '%s'\n", mem);
r = orig_recv(sockfd, buf, len, flags);
printf("read 'answer?' %d %s\n", r, buf);
chal = 0x8048EAB;
*(int *)0x804B04C=7;
chal(mem, chalres);
chal2 = 0x8048F67;
chal2(chalres);
strcat(chalres, "\n");
printf ("sending response\n");
x = orig_send(sockfd, chalres, strlen(chalres), flags);
printf ("receiving again");
r = orig_recv(sockfd, buf, len, flags);
printf("read flag %d: %s\n", r, buf);
exit(0);
}
return r;
}
INTERPOSE (send, ssize_t, int sockfd, const void *buf, size_t len, int flags)
{
CHECK_INTERPOSE (send);
if (!is_our_fd (sockfd))
return orig_send (sockfd, buf, len, flags);
return v4v_send (sockfd, buf, len, flags);
}
ssize_t send(int sockfd, const void *buf, size_t len, int flags)
{
ssize_t (*orig_send)(int sockfd, const void *buf, size_t len, int flags);
orig_send = dlsym(RTLD_NEXT, "send");
printf("LEN=%d\n", len);
ssize_t r = orig_send(sockfd, buf, len, flags);
printf("SEND %d %s\n", r, buf);
return r;
}
