Formatting

This commit is contained in:
Catatonic Prime 2016-11-13 20:37:35 +00:00
commit 0c2e02135d

View file

@ -15,7 +15,7 @@ extern int blockDecrypt(cipherInstance *cipher, keyInstance *key,CONST BYTE *inp
//RAdmin 2.x
struct rmessage{
struct rmessage {
char magic; //Indicates version, probably?
unsigned int length; //Total message size of data.
unsigned int checksum; //Checksum from type to end of data.
@ -24,12 +24,12 @@ struct rmessage{
};
/*
* Usage: sum = checksum(message);
* Function: Returns a 4 byte little endian sum of the messages typecode+data. This data is zero padded for alignment.
* Example message (big endian):
* [01][00000021][0f43d461] sum([1b6e779a f37189bb c1b22982 c80d1f4d 66678ff9 4b10f0ce eabff6e8 f4fb8338 3b] + zeropad(3)])
* Sum: is 0f43d461 (big endian)
*/
* Usage: sum = checksum(message);
* Function: Returns a 4 byte little endian sum of the messages typecode+data. This data is zero padded for alignment.
* Example message (big endian):
* [01][00000021][0f43d461] sum([1b6e779a f37189bb c1b22982 c80d1f4d 66678ff9 4b10f0ce eabff6e8 f4fb8338 3b] + zeropad(3)])
* Sum: is 0f43d461 (big endian)
*/
unsigned int checksum(struct rmessage *msg) {
int blen;
unsigned char *stream;
@ -55,10 +55,10 @@ unsigned int checksum(struct rmessage *msg) {
}
/*
* Usage: challenge_request(message);
* Function: Modifies message to reflect a request for a challenge. Updates the checksum as appropriate.
*/
void challenge_request(struct rmessage *msg) {
* Usage: challenge_request(message);
* Function: Modifies message to reflect a request for a challenge. Updates the checksum as appropriate.
*/
void challenge_request(struct rmessage *msg) {
msg->magic = 0x01;
msg->length = 0x01;
msg->type = 0x1b;
@ -66,9 +66,9 @@ void challenge_request(struct rmessage *msg) {
}
/*
* Usage: challenge_request(message);
* Function: Modifies message to reflect a response to a challenge. Updates the checksum as appropriate.
*/
* Usage: challenge_request(message);
* Function: Modifies message to reflect a response to a challenge. Updates the checksum as appropriate.
*/
void challenge_response(struct rmessage *msg, unsigned char *solution) {
msg->magic = 0x01;
msg->length = 0x21;
@ -78,9 +78,9 @@ void challenge_response(struct rmessage *msg, unsigned char *solution) {
}
/*
* Usage: buffer = message2buffer(message); send(buffer, message->length + 10); free(buffer)
* Function: Allocates a buffer for transmission and fills the buffer with message data such that it is ready to transmit.
*/
* Usage: buffer = message2buffer(message); send(buffer, message->length + 10); free(buffer)
* Function: Allocates a buffer for transmission and fills the buffer with message data such that it is ready to transmit.
*/
//TODO: conver to a sendMessage() function?
char *message2buffer(struct rmessage *msg) {
char *data;
@ -207,123 +207,133 @@ void service_radmin2(char *ip, int sp, unsigned char options, char *miscptr, FIL
if( memcmp(hydra_get_next_pair(), &HYDRA_EXIT, sizeof(HYDRA_EXIT)) == 0) {
return;
}
// Get a password to work with.
strncpy(password, hydra_get_next_password(), 101);
MD5_Init(&md5c);
MD5_Update(&md5c, password, 100);
MD5_Final(rawkey, &md5c);
//Copy raw md5 data into ASCIIZ string
for(index = 0; index < 16; index++) {
sprintf((pkey+index*2), "%02x", rawkey[index]);
}
/* Typical conversation goes as follows...
0) connect to server
1) request challenge
2) receive 32 byte challenge response
3) send 32 byte challenge solution
4) receive 1 byte auth success/fail message
*/
// 0) Connect to the server
sock = hydra_connect_tcp(ip, myport);
if(sock < 0) {
hydra_report(stderr, "Error: Child with pid %d terminating, can not connect\n", (int)getpid());
hydra_child_exit(1);
}
while(1) {
// Get a password to work with.
strncpy(password, hydra_get_next_password(), 101);
MD5_Init(&md5c);
MD5_Update(&md5c, password, 100);
MD5_Final(rawkey, &md5c);
//Copy raw md5 data into ASCIIZ string
for(index = 0; index < 16; index++) {
sprintf((pkey+index*2), "%02x", rawkey[index]);
}
// 1) request challenge (working)
msg = calloc(1, sizeof(struct rmessage));
challenge_request(msg);
request = message2buffer(msg);
hydra_send(sock, request, 10, 0);
free(msg);
free(request);
/* Typical conversation goes as follows...
0) connect to server
1) request challenge
2) receive 32 byte challenge response
3) send 32 byte challenge solution
4) receive 1 byte auth success/fail message
*/
// 0) Connect to the server
sock = hydra_connect_tcp(ip, myport);
if(sock < 0) {
hydra_report(stderr, "Error: Child with pid %d terminating, can not connect\n", (int)getpid());
hydra_child_exit(1);
}
//2) receive response (working)
index = 0;
while(index < 42) { //We're always expecting back a 42 byte buffer from a challenge request.
switch(hydra_data_ready(sock)) {
case -1:
hydra_report(stderr, "Error: Child with pid %d terminating, receive error\nerror:\t%s\n", (int)getpid(), strerror(errno));
hydra_child_exit(1);
break;
case 0:
//keep waiting...
break;
default:
bytecount = hydra_recv(sock, buffer+index, 42 - index);
if(bytecount < 0) {
// 1) request challenge (working)
msg = calloc(1, sizeof(struct rmessage));
challenge_request(msg);
request = message2buffer(msg);
hydra_send(sock, request, 10, 0);
free(msg);
free(request);
//2) receive response (working)
index = 0;
while(index < 42) { //We're always expecting back a 42 byte buffer from a challenge request.
switch(hydra_data_ready(sock)) {
case -1:
hydra_report(stderr, "Error: Child with pid %d terminating, receive error\nerror:\t%s\n", (int)getpid(), strerror(errno));
hydra_child_exit(1);
}
index += bytecount;
break;
case 0:
//keep waiting...
break;
default:
bytecount = hydra_recv(sock, buffer+index, 42 - index);
if(bytecount < 0) {
hydra_report(stderr, "Error: Child with pid %d terminating, receive error\nerror:\t%s\n", (int)getpid(), strerror(errno));
hydra_child_exit(1);
}
index += bytecount;
}
}
}
//3) Send challenge solution.
//3.a) generate a new message from the buffer
msg = buffer2message(buffer);
//3) Send challenge solution.
//3.b) encrypt data received using pkey & known IV
index = makeKey(&key, DIR_ENCRYPT, 128, pkey);
if(index != TRUE) {
hydra_report(stderr, "Error: Child with pid %d terminating, make key error (%08x)\n", (int)getpid(), index);
hydra_child_exit(1);
}
//3.a) generate a new message from the buffer
msg = buffer2message(buffer);
index = cipherInit(&cipher, MODE_CBC, IV);
if(index != TRUE) {
hydra_report(stderr, "Error: Child with pid %d terminating, cipher init error(%08x)\n", (int)getpid(), index);
hydra_child_exit(1);
}
//3.b) encrypt data received using pkey & known IV
index = makeKey(&key, DIR_ENCRYPT, 128, pkey);
if(index != TRUE) {
hydra_report(stderr, "Error: Child with pid %d terminating, make key error (%08x)\n", (int)getpid(), index);
hydra_child_exit(1);
}
index = blockEncrypt(&cipher, &key, msg->data, 32 * 8, encrypted);
if(index <= 0) {
hydra_report(stderr, "Error: Child with pid %d terminating, encrypt error(%08x)\n", (int)getpid(), index);
hydra_child_exit(1);
}
//3.c) half sum - this is the solution to the challenge.
for(index=0; index < 16; index++) {
*(encrypted+index) += *(encrypted+index+16);
}
memset((encrypted+16), 0x00, 16);
index = cipherInit(&cipher, MODE_CBC, IV);
if(index != TRUE) {
hydra_report(stderr, "Error: Child with pid %d terminating, cipher init error(%08x)\n", (int)getpid(), index);
hydra_child_exit(1);
}
//3.d) send half sum
challenge_response(msg, encrypted);
request = message2buffer(msg);
hydra_send(sock, request, 42, 0);
free(msg);
free(request);
index = blockEncrypt(&cipher, &key, msg->data, 32 * 8, encrypted);
if(index <= 0) {
hydra_report(stderr, "Error: Child with pid %d terminating, encrypt error(%08x)\n", (int)getpid(), index);
hydra_child_exit(1);
}
//4) receive auth success/failure
index = 0;
while(index < 10) { //We're always expecting back a 42 byte buffer from a challenge request.
switch(hydra_data_ready(sock)) {
case -1:
hydra_report(stderr, "Error: Child with pid %d terminating, receive error\nerror:\t%s\n", (int)getpid(), strerror(errno));
hydra_child_exit(1);
break;
case 0:
//keep waiting...
break;
default:
bytecount = hydra_recv(sock, buffer+index, 10 - index);
if(bytecount < 0) {
//3.c) half sum - this is the solution to the challenge.
for(index=0; index < 16; index++) {
*(encrypted+index) += *(encrypted+index+16);
}
memset((encrypted+16), 0x00, 16);
//3.d) send half sum
challenge_response(msg, encrypted);
request = message2buffer(msg);
hydra_send(sock, request, 42, 0);
free(msg);
free(request);
//4) receive auth success/failure
index = 0;
while(index < 10) { //We're always expecting back a 42 byte buffer from a challenge request.
switch(hydra_data_ready(sock)) {
case -1:
hydra_report(stderr, "Error: Child with pid %d terminating, receive error\nerror:\t%s\n", (int)getpid(), strerror(errno));
hydra_child_exit(1);
}
index += bytecount;
break;
case 0:
//keep waiting...
break;
default:
bytecount = hydra_recv(sock, buffer+index, 10 - index);
if(bytecount < 0) {
hydra_report(stderr, "Error: Child with pid %d terminating, receive error\nerror:\t%s\n", (int)getpid(), strerror(errno));
hydra_child_exit(1);
}
index += bytecount;
}
}
msg = buffer2message(buffer);
switch(msg->type) {
case 0x0a:
hydra_completed_pair_found();
break;
case 0x0b:
hydra_completed_pair();
hydra_disconnect(sock);
break;
default:
hydra_report(stderr, "Error: Child with pid %d terminating, protocol error\n", (int)getpid());
hydra_child_exit(2);
}
}
msg = buffer2message(buffer);
if(msg->type == 0x0a) {
hydra_completed_pair_found();
}
//5) Disconnect
hydra_disconnect(sock);
}
int service_radmin2_init(char *ip, int sp, unsigned char options, char *miscptr, FILE * fp, int port, char *hostname) {
@ -334,8 +344,8 @@ int service_radmin2_init(char *ip, int sp, unsigned char options, char *miscptr,
// fill if needed.
//
// return codes:
// 0 all OK
// -1 error, hydra will exit, so print a good error message here
// 0 all OK
// -1 error, hydra will exit, so print a good error message here
return 0;
}