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SMB的NTLM认证过程与NTLM挑战的编程实现


创建时间:2003-05-16
文章属性:原创
文章提交:flashsky (flashsky1_at_sina.com)

转摘请注明作者和安全焦点
作者:FLASHSKY
SITE:WWW.XFOCUS.NETWWW.SHOPSKY.COM
邮件:flashsky@xfocus.org
                    
    //注:本文不涉及到NTLM具体的认证算法,但是给出通过SSPI的API实现的过程。
    SMB协议可以说是WIN系统的核心协议,这里大致给大家讲解一下SMB认证登陆的过程:
    1。协议解析栈
    CLIENT:APP----->NET/MRP/RPC API------>MRXSMB.SYS------>NETBT.SYS---->TCP/IP
                                                          
    SERVER: SRV.SYS<-----------MRXSMB.SYS<----------NETBT.SYS<--------TCP/IP
  
     应用程序调用NET/MPR/RPC等API将信息写入WKSSVC管道,这个管道是一个特殊的管道,对应的其实是一个LPC端口。
     MRXSMB.SYS是一个SMB的小端口驱动,负责完成客户端的SMB的封装和实现,如发起协商,认证的加密/解密过程等。对于服务器端则主要
完成会话状态的一些管理,然后将SMB包发送给下级驱动处理。
     NETBT.SYS是NETBIOS OVER TCP/IP的驱动,一般都是作为MRXSMB的下级驱动,不过MRXSMB也可以有其他的下级驱动,最后通过一个网络驱
动实现通讯,这里假设是使用TCP/IP。
     SRV.SYS是服务器端的SMB协议驱动程序,实现完成真正的SMB的协议功能,然后将结果按原路返回给客户端。

    2。SMB的认证协议。
    通过SMB进行认证客户端一般都要先使用SMB的协商命令(0X72)发送客户端支持的认证协议给服务器,服务器则选择其中的一个,然后返回
给客户端,客户端然后再使用SMB的会话设置和X命令(0X73)进行认证和登陆。
    MS的SMB已经使用的SMB认证协议有:
      协议                        备注
    PC NETWORK PROGRAM 1.0                W2K支持                
    PCLAN1.0                        W2K支持
    MICROSOFT NETWORKS 1.03                W2K支持
    MICROSOFT NETWORKS 3.0                W2K支持
    LANMAN1.0                        W2K支持
    DOS LM1.2X002                    W2K支持
    Windows for Workgroups 3.1a             W2K不支持,老的Windows for Workgroups 3.1使用此协议方式。
    LM1.2X002                        W2K支持  
    DOS LANMAN2.1                    W2K支持
    LANMAN2.1                        W2K支持
    NT LM 0.12                        W2K支持
    Cairo 0.xa                        W2K支持,这是NT后MS自己开发的一个认证协议
    
    这里我们首先讲讲大家用的最多和最熟悉的NTLM认证方式:

    3。NTLM认证过程
    NTLM在发展的过程中也存在这兼容的一些问题,现在的NTLM是支持挑战方式的,但原始的W9X的NTLM则不支持挑战会话方式的,所以
从协议过程来看存在2种方式,一种是支持挑战加密的方式(NT,2K等),一种是不支持加密挑战的方式(W9X)。
    i.    认证过程1
?    (客户端发起:会话协商协议)包含支持NTLM认证的选项且支持挑战选项。
?     (服务器:会话协商协议)选择了NTLM认证协议,且包含服务器的GUID
?    (客户端发起:会话设置和X协议)申请挑战会话的安全BLOB
?    (服务器:会话设置和X协议)返回带有挑战KEY的安全BLOB
?    (客户端发起:会话设置和X协议)带会话KEY加密的口令散列的安全BLOB
?        认证成功:会话设置和X协议返回成功信息
        认证失败:会话设置和X协议返回失败信息,发起注销协议包
    ii.    认证过程2
?    (客户端发起:会话协商协议)包含支持NTLM认证的选项且不支持挑战选项。
?     (服务器:会话协商协议)选择了NTLM认证协议,且包含会话KEY
?    (客户端发起:会话设置和X协议)使用会话KEY加密的密码散列
//注意可以指定是非加密方式的密码明文来进行登陆
?    认证成功:会话设置和X协议返回成功信息
    认证失败:会话设置和X协议返回失败信息,发起注销协议包

    我们这里主要讲认证过程1,其实过程2一般为很多工具使用,因为可以通过特定的FLAG字段指定不使用挑战和加密方式进行登陆,
那么就可以方便的使用明文口令,如SMBCRACK主要使用这种方法进行口令暴力破解,但是需要注意的一点是,这种属于老的方式,是可以在
服务器端禁止的。
    客户端APP通过写入WKSSVC管道(LPC端口发起)相关命令和数据
        客户端MRXSMB.SYS的SmbCeNegotiate函数负责进行协商包的封装并交下级驱动封装
        服务器SRV.SYS的SrvSmbNegotiate函数负责选取一个认证协议并返回给客户端,并返回服务器的GUID
    客户端的MRXSMB.SYS的SmbCeReferenceSession负责进行认证:
模拟过程函数如下:

BYTE buf1[0x404c];
TOKEN_STATISTICS ts;
CredHandle phs;
CredHandle phc;
CtxtHandle cthc;
CtxtHandle cths;
SECURITY_STATUS   ss;
wchar_t TargetName[]=L"HOST/192.168.0.34";
int len;

typedef struct _Credentials
{
    char * pusername;
    DWORD usernamelen;
    char * pdomainname;
    DWORD domainnamelen;
    char * ppassword;
    DWORD passwordlen;
    DWORD credtype;
    BYTE info[0x200];
}Credentials,* PCredentials;

void client1()
{
    Credentials crt;
    LUID LogonID;
    HANDLE tk;
    TimeStamp Lifetime;
    DWORD ContextAttributes;
    DWORD rlen;
    char crtinfo[]={'a',0,'d',0,'m',0,'i',0,'n',0,'i',0,'s',0,'t',0,'r',0,'a',0,'t',0,'o',0,'r',0,0,0,'p',0,'s',0,'w',0,'d',0,0,0};
    
    SecBufferDesc     OutBuffDesc;
    SecBufferDesc     InBuffDesc;
    SecBuffer         InSecBuff;
    SecBuffer         OutSecBuff;
    LogonID.HighPart =0;
    LogonID.LowPart = 0x7d80;

    //输入的口令在此需要CRT
    //自动的则不需要
    OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, &tk);
    GetTokenInformation(tk,TokenStatistics,&ts,sizeof(ts),&rlen);
    crt.pusername = crt.info;
    crt.usernamelen = 0xd;
    crt.pdomainname =0;
    crt.domainnamelen = 0;
    crt.ppassword = crt.info+0x1c;
    crt.passwordlen =4;
    crt.credtype = 6;
    memcpy(crt.info,crtinfo,0x22);

    ss=AcquireCredentialsHandleW
        (NULL,L"Negotiate",SECPKG_CRED_OUTBOUND,&ts.AuthenticationId,&crt,NULL,NULL,&phc,&Lifetime);

    InBuffDesc.ulVersion = 0;
    InBuffDesc.cBuffers = 1;
    InBuffDesc.pBuffers = &InSecBuff;
    InSecBuff.BufferType =SECBUFFER_TOKEN;
    InSecBuff.cbBuffer =0;
    InSecBuff.pvBuffer = buf1;
    OutBuffDesc.ulVersion = 0;
    OutBuffDesc.cBuffers = 1;
    OutBuffDesc.pBuffers = &OutSecBuff;
    OutSecBuff.BufferType = SECBUFFER_TOKEN;
    OutSecBuff.cbBuffer =0x404c;
    OutSecBuff.pvBuffer = buf1;
    ss=InitializeSecurityContextW(
            &phc,
            NULL,
            TargetName,
            ASC_REQ_MUTUAL_AUTH|ASC_REQ_DELEGATE|ASC_REQ_STREAM|ASC_REQ_ALLOW_NON_USER_LOGONS,//0x210003
            0,
            SECURITY_NATIVE_DREP,
        &InBuffDesc,
            0,
            &cthc,
            &OutBuffDesc,
            &ContextAttributes,
            &Lifetime
            );
    len=OutSecBuff.cbBuffer;
    
}
    解释:
    TargetName后面的192.168.0.34是SMB服务器的名字,如果是用的IP就使用IP,用的NETBIOS名字就使用NETBIOS名字
    InitializeSecurityContextW之后的buf1里面就是BLOB数据。然后将此数据放于SMB包中的安全BLOB处进行传送。
    AcquireCredentialsHandle中的crt是当使用输入用户与口令的时候使用的,格式是明文和UNICODE的(参考Credentials结构)。当
系统使用SAM数据进行登陆的时候,此处可以是NULL;NULL的时候和非NULL的时候生成的安全BLOB的头内容是不同的。
    ts.AuthenticationId是认证的LUID,其实MRXSMB使用的是WIN32K.sys的不对外的GetProcessLuid函数来获取的,这里使用
GetTokenInformation来进行模拟。当系统使用系统的SAM登陆时,必须获得此值,才知道使用的认证ID,当然如果你知道且能获得其他用户进
程的认证LUID,也可以使用,不仅仅非要是自己进程的认证LUID;

    服务器的SRV.SYS获得此安全BLOB之后,调用SrvSmbSessionSetupAndX函数来进行处理,实际的处理函数是BlockingSessionSetupAndX函数。
调用SrvValidateSecurityBuffer,主要工作是根据客户端的初始BLOB生成带会话KEY的安全BLOB返回给客户端,模拟程序如下:

void server2()
{
    TimeStamp         Lifetime;
    SecBufferDesc     OutBuffDesc;
    SecBuffer         OutSecBuff;
    SecBufferDesc     InBuffDesc;
    SecBuffer         InSecBuff;
    DWORD ContextAttributes;
    BYTE pOut[0X40DD];
    BYTE pIn[0X50];
    
    ss=AcquireCredentialsHandleW
        (NULL,L"Negotiate",SECPKG_CRED_INBOUND,NULL,NULL,NULL,NULL,&phs,&Lifetime);

   OutBuffDesc.ulVersion = 0;
   OutBuffDesc.cBuffers = 1;
   OutBuffDesc.pBuffers = &OutSecBuff;
   OutSecBuff.cbBuffer = 0x40dd;
   OutSecBuff.BufferType = SECBUFFER_TOKEN;
   OutSecBuff.pvBuffer = pOut;
   InBuffDesc.ulVersion = 0;
   InBuffDesc.cBuffers = 1;
   InBuffDesc.pBuffers = &InSecBuff;
   InSecBuff.cbBuffer = len;
   InSecBuff.BufferType = SECBUFFER_TOKEN;
   InSecBuff.pvBuffer = pIn;
   memset(pIn,0,0x40dd);
   memset(pOut,0,0x40dd);
   memcpy(pIn,buf1,0x10);

   ss=AcceptSecurityContext (
            &phs,
            NULL,
            &InBuffDesc,
            ASC_REQ_DELEGATE|ASC_REQ_EXTENDED_ERROR|ASC_REQ_FRAGMENT_TO_FIT, //ASC_REQ_ALLOW_NULL_SESSION
            0x10,//SECURITY_NATIVE_DREP,

            &cths,
            &OutBuffDesc,
            &ContextAttributes,
            &Lifetime
            );
    len=OutSecBuff.cbBuffer;
}

    解释:
    ASC_REQ_ALLOW_NULL_SESSION选项在用户模式下不可用,在SRV.SYS则可以使用
    实际上客户端生成的初始BLOB只有前0X10字节(BLOB头)是有意义的,AcceptSecurityContext执行后的pOut缓冲里就是需要返回的
带会话KEY的安全BLOB

    客户端的MRXSMB.SYS获得这个安全BLOB后就会使用此KEY进行加密。模拟的程序如下:
void client3()
{
    TimeStamp Lifetime;
    DWORD ContextAttributes;
    SecBufferDesc     OutBuffDesc;
    SecBufferDesc     InBuffDesc;
    SecBuffer         InSecBuff;
    SecBuffer         OutSecBuff;

    InBuffDesc.ulVersion = 0;
    InBuffDesc.cBuffers = 1;
    InBuffDesc.pBuffers = &InSecBuff;
    InSecBuff.BufferType =SECBUFFER_TOKEN;
    InSecBuff.cbBuffer =len;
    InSecBuff.pvBuffer = buf1;
    OutBuffDesc.ulVersion = 0;
    OutBuffDesc.cBuffers = 1;
    OutBuffDesc.pBuffers = &OutSecBuff;
    OutSecBuff.BufferType = SECBUFFER_TOKEN;
    OutSecBuff.cbBuffer =0x404c;
    OutSecBuff.pvBuffer = buf1;
    ss=
(
            &phc,
            &cthc,
            TargetName,
            ASC_REQ_MUTUAL_AUTH|ASC_REQ_DELEGATE|ASC_REQ_STREAM|ASC_REQ_ALLOW_NON_USER_LOGONS,//0x210003
            0,
            SECURITY_NATIVE_DREP,
            &InBuffDesc,
            0,
            &cthc,
            &OutBuffDesc,
            &ContextAttributes,
            &Lifetime
            );
}
    
    在这个生成的过程中一些特性:
    我们使用同一返回的KEY,每次生成的认证内容都不一样,但是每次都是可以被认证的,那么我们可以得出一个结论,在这个认证的
    信息里还包含有时间戳或其他随机生成数据,加密和解密的算法还使用到了这个数据,这个数据也在认证内容中一起被发送到服务器。

服务器端进行认证的代码
void server4()
{
    TimeStamp         Lifetime;
    SecBufferDesc     OutBuffDesc;
    SecBuffer         OutSecBuff;
    SecBufferDesc     InBuffDesc;
    SecBuffer         InSecBuff;
    DWORD ContextAttributes;
    

   OutBuffDesc.ulVersion = 0;
   OutBuffDesc.cBuffers = 1;
   OutBuffDesc.pBuffers = &OutSecBuff;
   OutSecBuff.cbBuffer = 0x40dd;
   OutSecBuff.BufferType = SECBUFFER_TOKEN;
   OutSecBuff.pvBuffer = buf1;
   InBuffDesc.ulVersion = 0;
   InBuffDesc.cBuffers = 1;
   InBuffDesc.pBuffers = &InSecBuff;
   InSecBuff.cbBuffer = len;
   InSecBuff.BufferType = SECBUFFER_TOKEN;
   InSecBuff.pvBuffer = buf1;


   ss=AcceptSecurityContext (
            &phs,
            &cths,
            &InBuffDesc,
            ASC_REQ_DELEGATE|ASC_REQ_EXTENDED_ERROR|ASC_REQ_FRAGMENT_TO_FIT, //ASC_REQ_ALLOW_NULL_SESSION
            0x10,//SECURITY_NATIVE_DREP,
            &cths,
            &OutBuffDesc,
            &ContextAttributes,
            &Lifetime
            );
    if(ss==SEC_E_OK)
        printf("ok");
    else
        printf("error");
    
}
    
4.挑战NTLM的编程实现
        那么我们就可以实现一个纯TCP/IP的SMB使用NTLM的挑战方式进行登陆了,再这之前大家需要了解SMB协议,这里由于涉及到
公司的商业利益,我不能给予大家最详细的协议说明,但从程序代码和其中的注解大家应该大致知道。这个程序大家修改一下就可以
得到类似SMBCRACK功能的口令破解的多线程支持NTLM挑战方式的(这样可以使用在标准的W2K认可的方式,关闭了非挑战和不许可明
文口令方式登陆的W2K服务器)的工具,但是由于口令计算的消耗,速度就会慢一些:
SMB.h文件:
#include <windows.h>

typedef struct _SMBNBT
{
    unsigned char nbtsmb;
    unsigned char flag;
    short smbpacketlen;
}SMBNBT,* PSMBNBT;

typedef struct _SMBINFO
{
    unsigned char magic[4];
    BYTE smbtoken;
    BYTE errcodeclass;
    BYTE dosaherrcode;
    unsigned char errcode[2];
    BYTE flagsummary;
    short flagsummary2;
    short unuse[6];
    short treeid;
    short callprocessid;
    short userid;
    short multiplexid;
    unsigned char info[2048];
}SMBINFO,* PSMBINFO;

typedef struct _SMBP
{
    SMBNBT smbnbt;
    SMBINFO smbinfo;
}SMBP,* PSMBP;

typedef struct _Credentials
{
    char * pusername;
    DWORD usernamelen;
    char * pdomainname;
    DWORD domainnamelen;
    char * ppassword;
    DWORD passwordlen;
    DWORD credtype;
    BYTE info[0x200];
}Credentials,* PCredentials;
    
客户端程序:

#include <stdio.h>
#include <winsock2.h>
#include <windows.h>
#include <wincrypt.h>
#include <process.h>
#include <string.h>
#include <winbase.h>
# include <wincrypt.h>
#define SECURITY_WIN32
# include <Security.h>
#include "SMB.H"

void SmbNegotiate(SMBP * psmbp);
void SmbSessionSetupAndX1(SMBP * psmbp,wchar_t * username,wchar_t * domainname,wchar_t * password);
void SmbSessionSetupAndX2(SMBP * psmbp,unsigned char * ntlmrcv,short ntlmlen);

TOKEN_STATISTICS ts;
CredHandle phs;
CredHandle phc;
CtxtHandle cthc;
CtxtHandle cths;
SECURITY_STATUS   ss;
wchar_t TargetName[]=L"HOST/192.168.13.34";//后面的192.168.0.34是SMB服务器的名字,如果是用的IP就使用IP,用的NETBIOS名字就使用NETBIOS名字)
wchar_t navos[]=L"windows 2000 2195";
wchar_t lanman[]=L"windows 2000 5.0";

void main(int argc,char ** argv)
{
    WSADATA WSAData;
    int i;
    SOCKET sock;
    SOCKADDR_IN addr_in;
    int len;
    char serverip[]="192.168.13.34";
    short port=445;
    WORD olen,nlen;
    unsigned char buf1[0x1000];
    SMBP smbp;

    if (WSAStartup(MAKEWORD(2,0),&WSAData)!=0)
    {
        printf("WSAStartup error.Error:%d\n",WSAGetLastError());
        return;
    }

    addr_in.sin_family=AF_INET;
    addr_in.sin_port=htons(port);
    addr_in.sin_addr.S_un.S_addr=inet_addr(serverip);
    
    if ((sock=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==INVALID_SOCKET)
    {
        printf("Socket failed.Error:%d\n",WSAGetLastError());
        return;
    }
    if(WSAConnect(sock,(struct sockaddr *)&addr_in,sizeof(addr_in),NULL,NULL,NULL,NULL)==SOCKET_ERROR)
    {
        printf("Connect failed.Error:%d",WSAGetLastError());
        return;
    }
    SmbNegotiate(&smbp);
    if (send(sock,(unsigned char *)&smbp,ntohs(smbp.smbnbt.smbpacketlen)+4,0)==SOCKET_ERROR)
    {
            printf("Send failed.Error:%d\n",WSAGetLastError());
            return;
    }
    len=recv(sock,buf1,1024,NULL);
    SmbSessionSetupAndX1(&smbp,L"administrator",L"",L"1972");
    if (send(sock,(unsigned char *)&smbp,ntohs(smbp.smbnbt.smbpacketlen)+4,0)==SOCKET_ERROR)
    {
            printf("Send failed.Error:%d\n",WSAGetLastError());
            return;
    }
    len=recv(sock,buf1,1024,NULL);
    if((buf1[0]==0xff)&&(buf1[1]=='S')&&(buf1[2]=='M')&&(buf1[3]=='B'))
        olen=0x20;
    else if((buf1[4]==0xff)&&(buf1[5]=='S')&&(buf1[6]=='M')&&(buf1[7]=='B'))
        olen=0x24;
    else
        return;
    smbp.smbinfo.userid =  *(WORD *)(buf1+olen-0x4);
    nlen=*(WORD *)(buf1+olen+1+2*3);//BLOB的长度
    olen=olen+1+2*buf1[olen]+2;
    SmbSessionSetupAndX2(&smbp,buf1+olen,nlen);
    if (send(sock,(unsigned char *)&smbp,ntohs(smbp.smbnbt.smbpacketlen)+4,0)==SOCKET_ERROR)
    {
            printf("Send failed.Error:%d\n",WSAGetLastError());
            return;
    }
    len=recv(sock,buf1,1024,NULL);
    if((buf1[0]==0xff)&&(buf1[1]=='S')&&(buf1[2]=='M')&&(buf1[3]=='B'))
        olen=0x20;
    else if((buf1[4]==0xff)&&(buf1[5]=='S')&&(buf1[6]=='M')&&(buf1[7]=='B'))
        olen=0x24;
    else
        return;
    if(buf1[olen]==0)
        printf("error username and password\n");
    else
        printf("login ok\n");
    WSACleanup();
    return;
}

void SmbSessionSetupAndX1(SMBP * psmbp,wchar_t * username,wchar_t * domainname,wchar_t * password)
{
    LUID LogonID;
    unsigned char buf1[0x404c];
    HANDLE tk;
    TimeStamp Lifetime;
    DWORD ContextAttributes;
    DWORD rlen;
    DWORD r1,r2,r3;
    int i;
    Credentials crt;
    SecBufferDesc     OutBuffDesc;
    SecBufferDesc     InBuffDesc;
    SecBuffer         InSecBuff;
    SecBuffer         OutSecBuff;
    LogonID.HighPart =0;
    LogonID.LowPart = 0x7d80;

    psmbp->smbinfo.smbtoken =0x73;
    memset(psmbp->smbinfo.info,0,0x200);
    psmbp->smbinfo.flagsummary2 = 0xc807;
    *(DWORD *)(psmbp->smbinfo.info+21) = 0x800000D4;
    //指定使用加密的FLAG
    psmbp->smbinfo.info[0]=0xc;//WORD 参数个数
    *(WORD *)(psmbp->smbinfo.info+1)=0Xff;//无下一个命令
    *(WORD *)(psmbp->smbinfo.info+3)=0Xb0;//下一命令偏移
    *(WORD *)(psmbp->smbinfo.info+5)=0X4104;//最大缓冲
    *(WORD *)(psmbp->smbinfo.info+7)=0X32;//最大的MPX
    *(WORD *)(psmbp->smbinfo.info+9)=0X0;//虚拟通道
    *(DWORD *)(psmbp->smbinfo.info+11)=0X0;//虚拟通道
    *(DWORD *)(psmbp->smbinfo.info+17)=0X0;//保留

    //输入的口令在此需要CRT
    //自动的则不需要
    OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, &tk);
    GetTokenInformation(tk,TokenStatistics,&ts,sizeof(ts),&rlen);
    r1=0;
    for(i=0;i<0x30;i++)
    {
        if(username[i]==0)
            break;
        r1=r1+2;
    }
    r2=0;
    for(i=0;i<0x30;i++)
    {
        if(domainname[i]==0)
            break;
        r2=r2+2;
    }
    r3=0;
    for(i=0;i<0x30;i++)
    {
        if(password[i]==0)
            break;
        r3=r3+2;
    }
    crt.pusername = crt.info;
    crt.usernamelen = r1/2;
    if(r2>0)
    {
        crt.pdomainname =crt.info+r1+2;
        crt.domainnamelen = r2/2;
        crt.ppassword = crt.pdomainname+r2+2;
        crt.passwordlen =r3/2;
    }
    else
    {
        crt.pdomainname =0;
        crt.domainnamelen = 0;
        crt.ppassword = crt.info+r1+2;
        crt.passwordlen =r3/2;
    }
    crt.credtype = 6;
    memcpy(crt.pusername,username,r1);
    if(r2>0)
        memcpy(crt.pdomainname,domainname,r2);
    memcpy(crt.ppassword,password,r3);
    ss=AcquireCredentialsHandleW
        (NULL,L"Negotiate",SECPKG_CRED_OUTBOUND,&ts.AuthenticationId,&crt,NULL,NULL,&phc,&Lifetime);
    //LOGIN会影响生成
    InBuffDesc.ulVersion = 0;
    InBuffDesc.cBuffers = 1;
    InBuffDesc.pBuffers = &InSecBuff;
    InSecBuff.BufferType =SECBUFFER_TOKEN;
    InSecBuff.cbBuffer =0;
    InSecBuff.pvBuffer = buf1;
    OutBuffDesc.ulVersion = 0;
    OutBuffDesc.cBuffers = 1;
    OutBuffDesc.pBuffers = &OutSecBuff;
    OutSecBuff.BufferType = SECBUFFER_TOKEN;
    OutSecBuff.cbBuffer =0x404c;
    OutSecBuff.pvBuffer = buf1;
    ss=InitializeSecurityContextW(
            &phc,
            NULL,
            TargetName,
            ASC_REQ_MUTUAL_AUTH|ASC_REQ_DELEGATE|ASC_REQ_STREAM|ASC_REQ_ALLOW_NON_USER_LOGONS,//0x210003
            0,
            SECURITY_NATIVE_DREP,
            &InBuffDesc,
            0,
            &cthc,
            &OutBuffDesc,
            &ContextAttributes,
            &Lifetime
            );

    *(WORD *)(psmbp->smbinfo.info+15)=OutSecBuff.cbBuffer;  //BLOB的长度
    memcpy(psmbp->smbinfo.info+27,buf1,OutSecBuff.cbBuffer);//放入BLOB
    memcpy(psmbp->smbinfo.info+28+OutSecBuff.cbBuffer,navos,36);//
    memcpy(psmbp->smbinfo.info+66+OutSecBuff.cbBuffer,lanman,32);//
    *(WORD *)(psmbp->smbinfo.info+25)=73+OutSecBuff.cbBuffer;
    psmbp->smbnbt.smbpacketlen = htons(132+ OutSecBuff.cbBuffer);
}

void SmbSessionSetupAndX2(SMBP * psmbp,unsigned char * ntlmrcv,short ntlmlen)
{
    TimeStamp Lifetime;
    DWORD ContextAttributes;
    SecBufferDesc     OutBuffDesc;
    SecBufferDesc     InBuffDesc;
    SecBuffer         InSecBuff;
    SecBuffer         OutSecBuff;
    unsigned char buf1[0x404c];

    psmbp->smbinfo.smbtoken =0x73;
    memset(psmbp->smbinfo.info,0,0x200);
    psmbp->smbinfo.flagsummary2 = 0xc807;
    *(DWORD *)(psmbp->smbinfo.info+21) = 0x800000D4;
    //指定使用加密的FLAG
    psmbp->smbinfo.info[0]=0xc;//WORD 参数个数
    *(WORD *)(psmbp->smbinfo.info+1)=0Xff;//无下一个命令
    *(WORD *)(psmbp->smbinfo.info+3)=0X12e;//下一命令偏移
    *(WORD *)(psmbp->smbinfo.info+5)=0X4104;//最大缓冲
    *(WORD *)(psmbp->smbinfo.info+7)=0X32;//最大的MPX
    *(WORD *)(psmbp->smbinfo.info+9)=0X0;//虚拟通道
    *(DWORD *)(psmbp->smbinfo.info+11)=0X0;//虚拟通道
    *(DWORD *)(psmbp->smbinfo.info+17)=0X0;//保留

    //输入的口令在此需要CRT
    //自动的则不需要
    InBuffDesc.ulVersion = 0;
    InBuffDesc.cBuffers = 1;
    InBuffDesc.pBuffers = &InSecBuff;
    InSecBuff.BufferType =SECBUFFER_TOKEN;
    InSecBuff.cbBuffer =ntlmlen;
    InSecBuff.pvBuffer = ntlmrcv;
    OutBuffDesc.ulVersion = 0;
    OutBuffDesc.cBuffers = 1;
    OutBuffDesc.pBuffers = &OutSecBuff;
    OutSecBuff.BufferType = SECBUFFER_TOKEN;
    OutSecBuff.cbBuffer =0x404c;
    OutSecBuff.pvBuffer = buf1;
    ss=InitializeSecurityContextW(
            &phc,
            &cthc,
            TargetName,
            ASC_REQ_MUTUAL_AUTH|ASC_REQ_DELEGATE|ASC_REQ_STREAM|ASC_REQ_ALLOW_NON_USER_LOGONS,//0x210003
            0,
            SECURITY_NATIVE_DREP,
            &InBuffDesc,
            0,
            &cthc,
            &OutBuffDesc,
            &ContextAttributes,
            &Lifetime
            );
    *(WORD *)(psmbp->smbinfo.info+15)=OutSecBuff.cbBuffer;  //BLOB的长度
    memcpy(psmbp->smbinfo.info+27,buf1,OutSecBuff.cbBuffer);//放入BLOB
    memcpy(psmbp->smbinfo.info+28+OutSecBuff.cbBuffer,navos,36);//
    memcpy(psmbp->smbinfo.info+66+OutSecBuff.cbBuffer,lanman,32);//
    *(WORD *)(psmbp->smbinfo.info+25)=73+OutSecBuff.cbBuffer;
    psmbp->smbnbt.smbpacketlen = htons(132+ OutSecBuff.cbBuffer);
}

void SmbNegotiate(SMBP * psmbp)
{
    unsigned char magic[4]={0xff,'S','M','B'};
    short len;
    char langitem1[]="PC NETWORK PROGRAM 1.0";
    char langitem2[]="LANMAN1.0";
    char langitem3[]="Windows for Workgroups 3.1a";
    char langitem4[]="LM1.2X002";
    char langitem5[]="LANMAN2.1";
    char langitem6[]="NT LM 0.12";
    char langitem7[]="PCLAN1.0";
    char langitem8[]="MICROSOFT NETWORKS 1.03";
    char langitem9[]="MICROSOFT NETWORKS 3.0";
    char langitem10[]="DOS LM1.2X002";
    char langitem11[]="DOS LANMAN2.1";
    char langitem12[]="Cairo 0.xa";

    memset(psmbp,0,sizeof(SMBP));
    psmbp->smbnbt.nbtsmb = 0;
    psmbp->smbnbt.flag = 0;
    memcpy(psmbp->smbinfo.magic, magic,4);
    psmbp->smbinfo.smbtoken = 0x72;
    psmbp->smbinfo.errcodeclass = 0x0;
    psmbp->smbinfo.dosaherrcode = 0x0;
    psmbp->smbinfo.errcode[0] = 0x0;
    psmbp->smbinfo.errcode[1] = 0x0;
    psmbp->smbinfo.flagsummary = 0x18;
    psmbp->smbinfo.flagsummary2 = 0xc853;
    //指定了带挑战方式支持的FLAG
    psmbp->smbinfo.callprocessid = 0xfeff;
    psmbp->smbinfo.multiplexid = 0;
    psmbp->smbinfo.info[0]=0x0;
    len=3+2*(psmbp->smbinfo.info[0]);
    /*
    psmbp->smbinfo.info[len]=0x2;
    memcpy(psmbp->smbinfo.info+len+1,langitem3,sizeof(langitem3));
    len = len+1+sizeof(langitem3);
    
    psmbp->smbinfo.info[len]=0x2;
    memcpy(psmbp->smbinfo.info+len+1,langitem1,sizeof(langitem1));
    len = len+1+sizeof(langitem1);

    psmbp->smbinfo.info[len]=0x2;
    memcpy(psmbp->smbinfo.info+len+1,langitem2,sizeof(langitem2));
    len = len+1+sizeof(langitem2);
    

    psmbp->smbinfo.info[len]=0x2;
    memcpy(psmbp->smbinfo.info+len+1,langitem4,sizeof(langitem4));
    len = len+1+sizeof(langitem4);

    
    psmbp->smbinfo.info[len]=0x2;
    memcpy(psmbp->smbinfo.info+len+1,langitem5,sizeof(langitem5));
    len = len+1+sizeof(langitem5);
        
    psmbp->smbinfo.info[len]=0x2;
    memcpy(psmbp->smbinfo.info+len+1,langitem6,sizeof(langitem6));
    len = len+1+sizeof(langitem6);
    */
    psmbp->smbinfo.info[len]=0x2;
    memcpy(psmbp->smbinfo.info+len+1,langitem6,sizeof(langitem6));
    len = len+1+sizeof(langitem6);

    *(WORD *)(psmbp->smbinfo.info+1) =len-3-2*(psmbp->smbinfo.info[0]);
    psmbp->smbnbt.smbpacketlen = htons(len+0x20);
}